An assembled stair step shaping template structure

Abstract

The present application relates to the technical field of stair pouring formwork, and particularly relates to an assembled stair step shaping formwork structure, which comprises a ground connecting plate and further comprises a bottom support group connected to the ground connecting plate, wherein the bottom support group comprises two guide parts symmetrically installed on the upper end of the ground connecting plate, and the two guide parts are jointly connected with a bottom support plate in an inclined state. The bottom support group can change the slope of the stair, thereby achieving the function of pouring different slope stairs on one shaping formwork structure. When pouring different slope stairs in a small range, the assembled stair step shaping formwork structure does not need to carry multiple stair shaping formworks, thereby effectively reducing the construction cost and transportation cost.

Description

Technical Field

[0001] This invention relates to the field of staircase casting formwork technology, and in particular to a prefabricated staircase tread shaping formwork structure. Background Technology

[0002] Two-flight staircases are one of the most common staircase types in architecture, consisting of two treads and a landing. Their core feature is the use of the landing to buffer the pace of going up and down, making them suitable for most architectural scenarios. The treads of a two-flight staircase are typically manufactured using prefabricated stair tread templates, which are mass-produced and cast in a prefabricated formwork system. This prefabricated formwork system involves designing the stair treads as standard modules and manufacturing them in a factory to create a detachable and reusable template system. This template is quickly assembled on-site to form standard-sized and shaped stair treads after concrete pouring.

[0003] Existing prefabricated stair tread formwork typically consists of multiple modules, assembled on-site according to the slope and height of the staircase. Some prefabricated stair tread formwork is a one-piece molding model suitable for mass production. However, on-site assembly of these formwork requires numerous assembly steps, necessitating repeated vertical alignment of the riser panels during splicing. Furthermore, multiple modules are usually connected and fixed using rivets or bolts, increasing both the difficulty and time required for assembly and the efficiency of separating the formwork from the staircase. Because prefabricated stair tread formwork is a standard modular design, one formwork can only be used for pouring a staircase with one slope. The slope of the staircase cannot be adjusted, and there is a certain height difference between two flights of stairs on different floors, requiring a relatively small range of slope variation. Therefore, multiple formworks with different slopes need to be used for on-site construction or prefabrication. The large volume of the formwork and the use of multiple different formworks not only increases the floor space required but also increases transportation costs.

[0004] Therefore, there is an urgent need to provide stair tread formwork that can improve the assembly efficiency of the formwork and allows for slope adjustment. Summary of the Invention

[0005] Therefore, it is necessary to provide a prefabricated stair tread formwork structure to solve the problems that arise when using existing stair tread formwork.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a prefabricated stair tread template structure, comprising: a flooring.

[0007] The prefabricated stair tread template structure also includes a base support assembly, which is connected to the base plate. The base support assembly includes two guide parts symmetrically installed at the upper end of the base plate, and the two guide parts are connected together to an inclined base plate.

[0008] The prefabricated stair tread template structure also includes side support groups. Two side support groups are symmetrically arranged front and back and connected to the bottom support plate. Each side support group includes a support plate that can be detachably installed on the upper side of the bottom support plate. A U-shaped connecting frame is installed on the side of the support plate away from the middle of the bottom support plate. The opening of the connecting frame faces the bottom support plate. Multiple snap-fit ​​blocks that are evenly distributed in an inclined linear manner are rotatably connected to the middle section of the connecting frame. A linkage part is connected to the multiple snap-fit ​​blocks.

[0009] The prefabricated stair tread template structure also includes a vertical limiting group. Two vertical limiting groups are symmetrically arranged front and back and connected to the ground plate. The vertical limiting group includes a guide rail frame installed at the end of the ground plate. Two limiting parts are slidably connected on the guide rail frame. The two limiting parts are respectively connected to any two snap-fit ​​blocks on the same side. The two limiting parts have the same structure but different dimensions.

[0010] The limiting part includes a sliding block that is slidably connected to the guide rail frame. Two limiting rods are detachably connected to the upper end of the sliding block. A limiting sleeve that is fixedly connected to the corresponding snap-fit ​​block is sleeved on the limiting rod. The limiting rod restricts the rotation of the snap-fit ​​block through the limiting sleeve, so that the snap-fit ​​block always remains in a vertical state.

[0011] When the rotating base plate drives the support plate and connecting frame to rotate, the corresponding locking block slides along the limiting rod through the limiting sleeve and remains vertical, and the remaining locking blocks are kept vertical synchronously through the linkage.

[0012] The prefabricated stair tread shaping template structure also includes a shaping group, which is set between two support plates. The shaping group includes multiple snap-fit ​​plates that are snapped into multiple corresponding snap-fit ​​blocks. The snap-fit ​​plates are slidably connected to the shaping plates through guide rails, and extensions are connected to the two snap-fit ​​blocks at the lowest point.

[0013] Preferably, the base support assembly further includes a compensation part 1 connected to the upper left end of the base support plate, the compensation part 1 being used to compensate for the gap generated at the upper end of the base support plate after rotation.

[0014] Preferably, the guide portion includes an arc-shaped guide frame mounted on the upper end of the base plate, an arc-shaped guide plate slidably connected inside the arc-shaped guide frame, and the upper end of the arc-shaped guide plate being fixedly connected to the base plate.

[0015] Preferably, the compensation part includes a formwork frame hinged to the upper left end of the base plate. The formwork frame has an upward-facing U-shaped structure. A fan-shaped opening is provided at the lower end of the front and rear side walls of the formwork frame near the base plate. A compensation plate is slidably connected inside the fan-shaped opening and is fixedly connected to the upper left end of the base plate.

[0016] Preferably, the side support group further includes two compensation parts II, which are symmetrically distributed front and back and respectively connected to the lower ends of the two support plates. The compensation parts II are used to compensate for the gap generated at the lower end of the support plate after rotation.

[0017] Preferably, the linkage part includes multiple connecting rods respectively installed on the lower side of the end of the multiple snap-fit ​​blocks away from the support plate, and a linkage rod is rotatably connected to the multiple connecting rods.

[0018] Preferably, the compensation part two includes a fan-shaped opening two at the lower end of the support plate, a compensation plate two slidably connected inside the fan-shaped opening two, an arc-shaped guide plate slidably connected to the support plate at the upper end of the compensation plate two, and a connecting spring installed between the compensation plate two and the support plate.

[0019] Preferably, the shaping assembly further includes an adjusting screw that is threadedly connected to multiple snap-fit ​​plates, and the adjusting screw is rotatably connected to the shaping plate.

[0020] Preferably, the extension includes a limiting plate that simultaneously engages with the two front and rear snap-fit ​​blocks at the bottom end. An adjusting screw is threadedly connected to the limiting plate. A movable frame is rotatably connected to the left end of the adjusting screw. Two guide rods are symmetrically installed on the right end of the movable frame. The guide rods are slidably connected to the limiting plate. A lifting baffle is slidably connected inside the movable frame.

[0021] Preferably, the extension further includes a support frame installed on the upper end of the movable frame. The support frame has a U-shaped structure with the opening facing downwards. The middle section of the support frame is rotatably connected to an adjusting screw three, which is threadedly connected to the lifting baffle.

[0022] Preferably, a connecting seat is provided at the middle of the upper part of the grounding plate and the middle of the bottom wall of the bottom support plate, the grounding plate is hinged to the connecting seat, and a movable block is slidably connected to the bottom wall of the bottom support plate, the movable block is hinged to the connecting seat.

[0023] Preferably, the bottom right end of the bottom wall of the base plate is provided with a slope.

[0024] Preferably, the plurality of said snap-fit ​​plates and lifting baffles are arranged in a stepped manner and their height gradually decreases from left to right.

[0025] In summary, the present invention has the following beneficial technical effects: 1. The base support assembly used in the present invention can change the slope of the stairs, thereby realizing the function of pouring stairs with different slopes on a fixed template structure. When pouring stairs with different slopes in a small area, it is not necessary to carry multiple fixed templates for on-site construction or prefabrication, which effectively reduces the floor space occupied by the fixed templates during construction and reduces construction and transportation costs.

[0026] 2. The side support group and vertical limiting group used in this invention can keep the snap-fit ​​block in a vertical state at any slope adjustment of the stairs, eliminating the need for construction personnel to repeatedly adjust the verticality of the fixed group. Furthermore, the snap-fit ​​group and snap-fit ​​block are connected by an interlocking mechanism, which effectively improves the efficiency of fixed template assembly and has a high degree of reusability.

[0027] 3. The shaping assembly used in this invention can adjust the depth of each tread according to the slope of the staircase, ensuring that the tread depth of the staircase is within a reasonable range. After the staircase is formed, the side support assembly and the shaping assembly can achieve the function of separating the whole from the staircase, which effectively improves the efficiency of demolding the shaping template and reduces labor costs. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 A three-dimensional structural schematic diagram of the present invention from a first perspective is shown.

[0030] Figure 2 A front view of the present invention is shown.

[0031] Figure 3 A left view of the invention is shown.

[0032] Figure 4 It shows Figure 3 Sectional view of AA.

[0033] Figure 5 It shows Figure 3 A cross-sectional view of BB.

[0034] Figure 6 A three-dimensional structural schematic diagram of the side support group, part of the vertical limiting group and the shaping group of the present invention is shown.

[0035] Figure 7 A perspective sectional view of the extension of the present invention is shown.

[0036] Figure 8 It shows Figure 1 A magnified view of region C in the middle.

[0037] The above-mentioned drawings include the following reference numerals: 1. Grounding plate; 2. Base support assembly; 20. Guide section; 200. Arc-shaped guide frame; 201. Arc-shaped guide plate; 21. Base support plate; 22. Compensation section one; 220. Formwork support frame; 221. Fan-shaped opening one; 222. Compensation plate one; 3. Side support assembly; 30. Support plate; 31. Connecting frame; 32. Snap-fit ​​block; 33. Linkage section; 330. Connecting rod; 331. Linkage rod; 332. Mounting plate; 333. Tightening screw; 334. Tightening plate; 34. Compensation section. 2; 340, Fan-shaped opening 2; 341, Compensation plate 2; 342, Arc-shaped guide plate; 343, Connecting spring; 4, Vertical limiting group; 40, Guide rail frame; 41, Limiting part; 410, Sliding block; 411, Limiting rod; 412, Limiting sleeve; 5, Shaping group; 50, Snap-fit ​​plate; 51, Shaping plate; 52, Extension part; 520, Limiting plate; 521, Adjusting screw 2; 522, Moving frame; 523, Lifting baffle; 524, Support frame; 525, Adjusting screw 3; 53, Adjusting screw 1; 6, Connecting seat. Detailed Implementation

[0038] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] See Figures 1-3 A prefabricated stair tread template structure includes a base plate 1 and a base support group 2. The base support group 2 is connected to the base plate 1. The base support group 2 includes two guide parts 20 symmetrically installed on the upper end of the base plate 1. The two guide parts 20 are connected together to an inclined base plate 21. The lower right end of the bottom wall of the base plate 21 is provided with a slope.

[0040] In the specific work, when the staircase is poured and formed, the connecting plate 1 and the bottom support assembly 2 are first moved to the construction position, and then the connecting plate 1 is pre-limited.

[0041] See Figure 4 A connecting seat 6 is provided at the middle of the upper end of the grounding plate 1 and the middle of the bottom wall of the bottom support plate 21. The grounding plate 1 is hinged to the connecting seat 6. A movable block is slidably connected to the bottom wall of the bottom support plate 21. The movable block is hinged to the connecting seat 6.

[0042] In actual operation, after the base plate 1 is pre-fixed, the hydraulic cylinder is installed between the two connecting seats 6 by means of bolts or clips, and the hydraulic cylinder provides initial support for the base plate 21.

[0043] See Figure 1 and Figure 4 The guide part 20 includes an arc-shaped guide frame 200 installed on the upper end of the base plate 1, an arc-shaped guide plate 201 slidably connected inside the arc-shaped guide frame 200, and the upper end of the arc-shaped guide plate 201 is fixedly connected to the bottom support plate 21.

[0044] In actual operation, the arc-shaped guide frame 200 guides the arc-shaped guide plate 201 and limits the rotation trajectory of the base plate 21, so that the lower right end of the base plate 21 always keeps in contact with the ground when it rotates, and the slope of the base plate 21 provides rotation space for the base plate 21 to rotate downward.

[0045] See Figure 1 and Figure 6 The prefabricated stair tread template structure also includes a side support group 3. Two side support groups 3 are symmetrically arranged front and back and connected to the bottom support plate 21. The side support group 3 includes a support plate 30 that is detachably installed on the upper side of the bottom support plate 21. A U-shaped connecting frame 31 is installed on the side of the support plate 30 away from the middle of the bottom support plate 21. The opening of the connecting frame 31 faces the bottom support plate 21. Multiple snap-fit ​​blocks 32 that are evenly distributed in an inclined linear manner are rotatably connected to the middle section of the connecting frame 31.

[0046] In actual operation, after the hydraulic cylinder is connected to the two connecting seats 6, the two support plates 30 are placed on the upper end of the base plate 21 and fixedly connected by bolts. At the same time as the support plates 30 are installed, the connecting frame 31 simultaneously positions multiple snap-fit ​​blocks 32, and snap-fit ​​grooves are opened on the snap-fit ​​blocks 32.

[0047] See Figure 1 , Figure 2 and Figure 4 The prefabricated stair tread template structure also includes a vertical limiting group 4. Two vertical limiting groups 4 are symmetrically arranged front and back and connected to the base plate 1. The vertical limiting group 4 includes a guide rail frame 40 installed at the end of the base plate 1. Two limiting parts 41 are slidably connected on the guide rail frame 40. The two limiting parts 41 are respectively connected to any two snap-fit ​​blocks 32 on the same side. The two limiting parts 41 have the same structure but different dimensions.

[0048] See Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 8The limiting part 41 includes a sliding block 410 slidably connected to the guide rail frame 40. Two limiting rods 411 are detachably connected to the upper end of the sliding block 410. A limiting sleeve 412 is sleeved on the limiting rod 411 and fixedly connected to the corresponding snap-fit ​​block 32. The limiting rod 411 restricts the rotation of the snap-fit ​​block 32 through the limiting sleeve 412, so that the snap-fit ​​block 32 always remains in a vertical state.

[0049] In specific operation, while fixing the base plate 1, the guide rail frame 40 is limited. After the two support plates 30 are fixed on the upper end of the base plate 21, the two sliding blocks 410 are slidably connected to the guide rail frame 40 on the same side. Then, multiple limiting rods 411 are selected in sequence. The limiting rods 411 pass through the corresponding limiting sleeves 412 and are threadedly connected to the corresponding sliding blocks 410 to realize the function of vertically limiting the corresponding locking block 32, ensuring that the locking block 32 is always in a vertical state.

[0050] See Figure 1 , Figure 4 and Figure 6 Multiple snap-fit ​​blocks 32 are connected to a linkage part 33. The linkage part 33 includes multiple connecting rods 330 respectively installed on the lower side of the multiple snap-fit ​​blocks 32 away from the support plate 30. Multiple connecting rods 330 are rotatably connected to a linkage rod 331. When the rotating base plate 21 drives the support plate 30 and the connecting frame 31 to rotate, the corresponding snap-fit ​​block 32 slides along the limiting rod 411 through the limiting sleeve 412 and remains in a vertical state. The remaining snap-fit ​​blocks 32 are kept in a vertical state synchronously through the linkage part 33.

[0051] In actual operation, after the limiting rod 411 and the limiting sleeve 412 are engaged, the hydraulic cylinder is activated. The hydraulic cylinder drives the bottom support plate 21 to rotate, thereby adjusting the slope to achieve the required slope for construction. When the bottom support plate 21 rotates, the two support plates 30 drive multiple locking blocks 32 to rotate through the two connecting frames 31. The corresponding two locking blocks 32 on each connecting frame 31 drive multiple limiting rods 411 to move laterally. The multiple limiting rods 411 drive two sliding blocks 410 to slide within the guide rail frame 40. At the same time, the two locking blocks 32 drive multiple limiting sleeves 412 to slide vertically on their corresponding limiting rods 411, thereby achieving the adjustment of the locking blocks 32. The vertical guide function is achieved by connecting multiple locking blocks 32 through multiple connecting rods 330 and linkage rods 331, so that the multiple locking blocks 32 are in an overall linkage state, that is, the multiple locking blocks 32 are in the same state, ensuring that the multiple locking blocks 32 are always in a vertical state during the rotation of the base plate 21. After the slope of the base plate 21 is adjusted, the horizontal projection length of the staircase changes. Since there is a horizontal turning section at the top of the staircase, the horizontal projection length of the staircase is compensated by controlling the distance between the base plate 21 and the turning section, that is, changing the width of the turning section. Then, the base plate 21 is supported by the existing scaffolding and fixed to the floor 1 for limitation.

[0052] See Figure 1 , Figure 4 and Figure 5 The base support assembly 2 also includes a compensation part 22 connected to the upper left end of the base support plate 21. The compensation part 22 is used to compensate for the gap generated at the upper end of the base support plate 21 after rotation. The compensation part 22 includes a support frame 220 hinged to the upper left end of the base support plate 21. The support frame 220 has an upward-facing U-shaped structure. The lower ends of the front and rear side walls of the support frame 220 are provided with fan-shaped openings 221 near the base support plate 21. A compensation plate 222 is slidably connected in the fan-shaped openings 221. The compensation plate 222 is fixedly connected to the upper left end of the base support plate 21.

[0053] In practice, after the slope of the base plate 21 is adjusted, the bottom of the formwork frame 220 is supported by scaffolding to ensure that the bottom of the formwork frame 220 is in a horizontal state. The formwork frame 220 drives the compensation plate 222 to slide within the fan-shaped opening 221, thereby closing and compensating for the gaps between the front and rear side walls of the formwork frame 220 and the two support plates 30. This prevents concrete loss during the subsequent pouring of the stairs. Then, existing templates of the corresponding shape are used to cover the gaps between the bottom wall of the formwork frame 220 and the base plate 21, as well as the gaps between the inner side of the compensation plate 222 and the inner end face of the side wall of the formwork frame 220, ensuring that the surface of the poured stairs is flat.

[0054] See Figure 1 and Figure 5 The side support group 3 further includes two compensation parts 34 symmetrically distributed front and rear and respectively connected to the lower ends of the two support plates 30. The compensation parts 34 are used to compensate for the gap generated at the lower end of the support plate 30 after rotation. The compensation parts 34 include a fan-shaped opening 340 opened at the lower end of the support plate 30. A compensation plate 341 is slidably connected in the fan-shaped opening 340. An arc-shaped guide plate 342 that is slidably connected to the support plate 30 is installed on the upper end of the compensation plate 341. A connecting spring 343 is installed between the compensation plate 341 and the support plate 30.

[0055] In practice, after the support plate 30 is installed and limited, the lower end of the compensation plate 341 is always grounded. The compressed connecting spring 343 applies force to the compensation plate 341. After the slope of the bottom support plate 21 is adjusted, the compensation plate 341 rotates in the fan-shaped opening 340 under the guidance of the arc guide plate 342. The center of the arc guide plate 342 is coaxial with the rotation axis of the bottom support plate 21. The moving compensation plate 341 seals and compensates for the gap between the lower end of the support plate 30 and the ground, so as to avoid concrete loss during the subsequent pouring of the stairs. Then, the existing template of the corresponding shape is used to cover the gap between the inner end face of the compensation plate 341 and the inner end face of the support plate 30, so as to ensure that the surface of the poured stairs is flat.

[0056] See Figure 1 and Figure 6 The multiple linkage parts 33 also include a mounting plate 332 installed at the lower end of the linkage rod 331. A tightening screw 333 is threadedly connected to the mounting plate 332, and a tightening plate 334 is rotatably connected to one end of the tightening screw 333 near the support plate 30.

[0057] In actual operation, after the scaffold supports and limits the bottom support plate 21, the tightening screws 333 on both sides are rotated in sequence. The tightening screws 333 drive the tightening plate 334 to move towards the support plate 30 and fit tightly against the support plate 30. The contact surface of the tightening plate 334 is a rough surface, thereby increasing the friction between it and the support plate 30, realizing the function of limiting the linkage rod 331, and thus realizing the function of limiting the multiple locking blocks 32.

[0058] Construction workers laid the steel reinforcement cage between the bottom support plate 21 and the two support plates 30 to form a steel reinforcement skeleton.

[0059] The prefabricated stair tread shaping template structure also includes a shaping group 5, which is set between two support plates 30. The shaping group 5 includes multiple snap-fit ​​plates 50 that are snapped into multiple corresponding snap-fit ​​blocks 32. The snap-fit ​​plates 50 are slidably connected to the shaping plates 51 through guide rails. The two snap-fit ​​blocks 32 at the lowest point are connected to extensions 52.

[0060] See Figure 1 , Figure 4 and Figure 6 The shaping assembly 5 also includes an adjusting screw 53 that is threaded onto a plurality of snap-fit ​​plates 50, and the adjusting screw 53 is rotatably connected to the shaping plate 51.

[0061] In the initial state, the snap-fit ​​plate 50 is attached to the shaping plate 51, which is the maximum depth of the pourable step. After the steel reinforcement cage is laid, the step depth is checked. If the step depth is within a reasonable range, there is no need to adjust the spacing between the snap-fit ​​plate 50 and the shaping plate 51. Multiple snap-fit ​​plates 50 are directly inserted into the snap-fit ​​grooves of the corresponding two snap-fit ​​blocks 32. The corresponding snap-fit ​​blocks 32 realize the function of limiting the snap-fit ​​plate 50 and ensuring that it is in a vertical state. There is no need for construction personnel to repeatedly adjust the riser baffle to a vertical state, which improves the efficiency of shaping template assembly. The snap-fit ​​plate 50 drives the shaping plate 51 to move between the two support plates 30 through the adjusting screw 53.

[0062] If the step depth is not within a reasonable range, multiple adjusting screws 53 need to be rotated in sequence. The adjusting screws 53 drive the shaping plate 51 to move, thereby changing the distance between the snap-fit ​​plate 50 and the shaping plate 51. The moving distance of multiple shaping plates 51 gradually increases to ensure that the spacing of the shaping plates 51 between the two support plates 30 is the same and the step depth is within a reasonable range. Then, repeat the steps of snap-fit ​​plate 50 and snap-fit ​​block 32 insertion and engagement.

[0063] See Figure 1 , Figure 4 , Figure 6 and Figure 7 The extension 52 includes a limiting plate 520 that simultaneously engages with the two front and rear locking blocks 32 at the bottom. A second adjusting screw 521 is threaded onto the limiting plate 520. A movable frame 522 is rotatably connected to the left end of the second adjusting screw 521. Two guide rods are symmetrically installed on the right end of the movable frame 522, and the guide rods are slidably connected to the limiting plate 520. A lifting baffle 523 is slidably connected inside the movable frame 522. The extension 52 also includes a support frame 524 installed on the upper end of the movable frame 522. The support frame 524 has a U-shaped structure with the opening facing downwards. A third adjusting screw 525 is rotatably connected to the middle section of the support frame 524, and the third adjusting screw 525 is threadedly connected to the lifting baffle 523.

[0064] In actual operation, in the initial state, the limiting plate 520 is in contact with the moving frame 522, and then with the lifting baffle 523. If the step depth is within a reasonable range, there is no need to adjust the distance between the limiting plate 520 and the lifting baffle 523. Then, the limiting plate 520 is inserted and engaged with the two bottommost snap-fit ​​blocks 32 to realize the function of limiting the limiting plate 520. Then, the adjusting screw 3 525 is rotated, and the adjusting screw 3 525 drives the lifting baffle 523 to move downward along the moving frame 522, so that the lower end of the lifting baffle 523 is in close contact with the ground.

[0065] If the step depth is not within a reasonable range, rotate the adjusting screw 521. The adjusting screw 521 will drive the moving frame 522 to move. The moving frame 522 will drive the lifting baffle 523 away from the limiting plate 520 and to the required position. Then repeat the steps of the limiting plate 520 and the two bottommost locking blocks 32 to engage.

[0066] Multiple snap-fit ​​plates 50 and lifting baffles 523 are arranged in a stepped manner with their height gradually decreasing from left to right, forming the steps of the staircase for stair formation. A release agent is then sprayed into the molded template, and concrete is poured into the template to form the staircase. After the staircase is formed, the bolts between the support plate 30 and the bottom support plate 21 are released. The two support plates 30 are then separated from the bottom support plate 21, and the two bottom support plates 21 cause multiple molded plates 51 and lifting baffles 523 to separate from the staircase, enabling rapid demolding of the molded template and effectively improving the efficiency of template dismantling. The bottom support plate 21 is then separated from the staircase, and the cast staircase is then trimmed. The first-section staircase is now complete. If a second-section staircase is required, the prefabricated stair step molded template structure is simply lifted to the second section of the staircase, and then supported and limited by the existing scaffolding connected to the floor 1. The previous staircase casting steps are repeated to achieve the function of casting a second-section staircase, and the staircase casting is complete.

[0067] It is important to note that while integrated welded precast stair steel formwork can still be used for stair casting, the slope of the staircase formed by this formwork is fixed; one type of formwork can only produce staircases with one slope. Staircases with varying slopes require different precast steel formworks to match. Precast plants need a large number of different slope precast steel formworks to produce staircases with different slopes, requiring significant floor space to accommodate them. Furthermore, mass production of staircases with different slopes necessitates replacing the corresponding formwork, further increasing the cost of stair casting. This invention, however, allows for the use of the same prefabricated stair tread formwork structure for staircases with different slopes within a small area. This significantly reduces the number of formworks required by the precast plant, decreases the area occupied by formwork storage, and eliminates the need to replace formwork for staircases with minor slope variations, greatly reducing production costs. This invention completely solves the existing technical problems in such cases.

[0068] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0069] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

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

Claims

1. A prefabricated stair tread formwork structure, including a floor panel, characterized in that, Also includes: The base support assembly includes two guide parts symmetrically installed at the upper end of the base plate, and an inclined base plate is connected to both guide parts. Two side support groups are symmetrically arranged front and back. The side support group includes a support plate that can be detachably installed on the upper side of the bottom support plate. A connecting frame is installed on the side of the support plate away from the middle of the bottom support plate. Multiple snap-fit ​​blocks are rotatably connected to the middle section of the connecting frame. A linkage part is connected to the multiple snap-fit ​​blocks. Two vertical limiting groups are symmetrically arranged front and back. Each vertical limiting group includes a guide rail frame installed at the end of the ground plate. Two limiting parts are slidably connected on the guide rail frame. The two limiting parts are respectively connected to any two snap-fit ​​blocks on the same side. The limiting part includes a sliding block slidably connected to the guide rail frame. Two limiting rods are detachably connected to the upper end of the sliding block. A limiting sleeve is fitted on the limiting rod and fixedly connected to the corresponding snap-fit ​​block. The limiting rod restricts the rotation of the snap-fit ​​block through the limiting sleeve. A shaping assembly is set between two support plates. The shaping assembly includes multiple snap-fit ​​plates that are snapped into multiple corresponding snap-fit ​​blocks. The snap-fit ​​plates are slidably connected to the shaping plates via guide rails. Extensions are connected to the two snap-fit ​​blocks at the lowest point. The linkage unit includes multiple connecting rods installed on the lower side of the end of multiple snap-fit ​​blocks away from the support plate, and a linkage rod is rotatably connected to the multiple connecting rods.

2. The prefabricated stair tread formwork structure according to claim 1, characterized in that: The base assembly also includes a compensation part 1 connected to the upper left end of the base plate, which is used to compensate for the gap generated at the upper end of the base plate after rotation.

3. The prefabricated stair tread formwork structure according to claim 1, characterized in that: The guide section includes an arc-shaped guide frame installed on the upper end of the base plate, an arc-shaped guide plate slidably connected inside the arc-shaped guide frame, and the upper end of the arc-shaped guide plate being fixedly connected to the base plate.

4. The prefabricated stair tread formwork structure according to claim 2, characterized in that: The compensation part includes a formwork frame hinged to the upper left end of the base plate. The formwork frame has an upward-facing U-shaped structure. A fan-shaped opening is provided at the lower end of the front and rear side walls of the formwork frame near the base plate. A compensation plate is slidably connected inside the fan-shaped opening and is fixedly connected to the upper left end of the base plate.

5. The prefabricated stair tread formwork structure according to claim 1, characterized in that: The side support group also includes two compensation parts II, which are symmetrically distributed front and back and connected to the lower ends of the two support plates respectively. The compensation parts II are used to compensate for the gaps generated at the lower ends of the support plates after rotation.

6. The prefabricated stair tread formwork structure according to claim 5, characterized in that: The compensation section 2 includes a fan-shaped opening 2 at the lower end of the support plate, a compensation plate 2 slidably connected inside the fan-shaped opening 2, an arc-shaped guide plate slidably connected to the support plate at the upper end of the compensation plate 2, and a connecting spring installed between the compensation plate 2 and the support plate.

7. The prefabricated stair tread formwork structure according to claim 1, characterized in that: The shaping assembly also includes an adjusting screw that is threadedly connected to multiple snap-fit ​​plates, and the adjusting screw is rotatably connected to the shaping plate.

8. The prefabricated stair tread formwork structure according to claim 1, characterized in that: The extension includes a limiting plate that simultaneously engages with the two front and rear snap-fit ​​blocks at the bottom. An adjusting screw is threaded onto the limiting plate. A movable frame is rotatably connected to the left end of the adjusting screw. Two guide rods are symmetrically installed on the right end of the movable frame. The guide rods are slidably connected to the limiting plate. A lifting baffle is slidably connected inside the movable frame.

9. A prefabricated stair tread formwork structure according to claim 8, characterized in that: The extension also includes a support frame installed on the upper end of the movable frame. The support frame has a U-shaped structure with the opening facing downwards. The middle section of the support frame is rotatably connected to an adjusting screw three, which is threadedly connected to the lifting baffle.

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