Prefabricated staircase mould and production method of prefabricated staircase

Abstract

The present invention relates to a prefabricated staircase mold and a production method for prefabricated stairs. The prefabricated staircase mold includes: a base; a bottom mold fixedly connected to the base; a first sidewall assembly including side sidewalls and a step sidewall group, wherein the side sidewalls are fixedly connected to the base and are located on one side of the bottom mold in a first direction, and the step sidewall group is located on the other side of the bottom mold in the first direction and includes a plurality of step sidewalls arranged in sequence along a second direction, each step sidewall is provided on the base and can be controlled to move closer to or away from the side sidewalls in the same direction; each two adjacent step sidewalls are matched with each other, and the relative positions in the moving direction are adjustable; a second sidewall assembly including a first end sidewall group and a second end sidewall group installed on the base, the first end sidewall group and the second end sidewall group are respectively located at the two ends of the bottom mold in the second direction, and the first end sidewall group, the second end sidewall group, the side sidewalls, the step sidewall group and the bottom mold enclose a casting cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a prefabricated staircase mould and a production method of the prefabricated staircase. Background Art

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

[0003] Precast stairs are a common precast concrete component. In order to adapt to the variability of precast stairs, the size of the precast staircase mold needs to be designed to be adjustable, which leads to a complex structure of the precast staircase mold and complicated mold assembly, mold closing and demoulding processes, reducing production efficiency and increasing production costs. Summary of the Invention

[0004] Based on this, it is necessary to provide a prefabricated staircase mold and a production method for prefabricated stairs that improve the above defects, such as the complex structure of the prefabricated staircase mold in the existing technology, the complex mold assembly, mold closing and demoulding processes, and the high production cost.

[0005] A prefabricated staircase mold, comprising:

[0006] base;

[0007] A bottom mold, fixedly connected to the base;

[0008] A first rib assembly includes a side rib and a step rib group, wherein the side rib is fixedly connected to the base and is located on one side of the bottom mold in a first direction, and the step rib group is located on the other side of the bottom mold in the first direction and includes a plurality of step ribs arranged in sequence along a second direction intersecting the first direction, each of the step ribs is provided on the base and can be controlled to move closer to or away from the side rib in the same direction; each two adjacent step ribs are matched with each other, and their relative positions in the moving direction are adjustable;

[0009] The second side guard assembly includes a first end side guard group and a second end side guard group installed on the base, the first end side guard group and the second end side guard group are respectively located at both ends of the bottom mold in the second direction, and the first end side guard group, the second end side guard group, the side side guard, the step side guard group and the bottom mold enclose a casting cavity.

[0010] In one embodiment, the side of the step rib facing the side rib has a first forming surface for forming a tread of a stair step and a second forming surface for forming a riser of a stair step, and the first forming surface of one of every two adjacent step ribs and the second forming surface of the other one are perpendicularly butted against each other;

[0011] The moving direction of the step rib is parallel to the second forming surface.

[0012] In one embodiment, the first side rib assembly further includes a limiting mechanism, and the limiting mechanism is provided between each two adjacent step side ribs, and the limiting mechanism is used to limit the relative movement distance of the two adjacent step side ribs.

[0013] In one embodiment, the limiting mechanism includes a slider, a stopper and a slide rail, the slider is fixedly connected to one of the two adjacent step ribs, the stopper and the slide rail are fixedly connected to the other of the two adjacent step ribs, and the slider and the slide rail are slidably matched, the number of the stoppers is two, and the two stoppers are respectively located at both ends of the slide rail, for stopping the slider sliding along the slide rail.

[0014] In one embodiment, the limiting mechanism further includes a fixed bracket, the slide rail and the stop block are both fixedly connected to the fixed bracket, and the fixed bracket is detachably fixedly connected to the corresponding step rib.

[0015] In one embodiment, the prefabricated stair mold further comprises a first drive assembly mounted on the base, the first drive assembly being drivingly connected to one of the step ribs of the step rib group adjacent to one end of the second end rib group;

[0016] One of the step ribs of the step rib group close to one end of the first end rib group is fixedly connected to the first end rib group.

[0017] In one embodiment, the first end rib group includes a first end rib and a second end rib relatively arranged on the base, and a third end rib arranged between the first end rib and the second end rib, the first end rib is spliced ​​with the corresponding end of the side rib, and the second end rib is spliced ​​with one of the step ribs at the corresponding end of the step rib group.

[0018] In one embodiment, the first end rib group further includes a second drive assembly, which is mounted on the base and is drivingly connected to the third end rib to drive the third end rib to move along the extension direction of the first end rib and the second end rib.

[0019] In one embodiment, the second end rib group includes a fourth end rib and a fifth end rib relatively arranged on the base, and a sixth end rib arranged between the fourth end rib and the fifth end rib, the fourth end rib is spliced ​​with the corresponding end of the side rib, and the fifth end rib is spliced ​​with one of the step ribs at the corresponding end of the step rib group.

[0020] In one embodiment, the second end rib group further includes a third drive assembly, which is mounted on the base and is drivingly connected to the sixth end rib to drive the sixth end rib to move along the extension direction of the fourth end rib and the fifth end rib.

[0021] In one embodiment, the base has multiple guide rails parallel to each other, and the multiple guide rails correspond one-to-one to the multiple step ribs. Support rollers and sliding blocks are installed at the bottom of the step ribs. The support rollers roll in conjunction with the corresponding guide rails, and the sliding blocks slide in conjunction with the corresponding guide rails.

[0022] A method for producing prefabricated stairs using the prefabricated staircase mold described in any of the above embodiments comprises the following steps:

[0023] Assembling the bottom mold, the side ribs, the first end rib group, the second end rib group, and each step rib of the step rib group on the base;

[0024] Adjust the relative positions of two adjacent step ribs according to the height of the steps of the prefabricated staircase to be produced and assemble and connect them to each other;

[0025] Controlling each step rib of the step rib group to move toward the side rib, so that the side ribs, the first end rib group, the second end rib group, the step rib group, and the bottom mold enclose the casting cavity;

[0026] Arranging a steel frame and embedded parts in the pouring cavity, and pouring concrete into the pouring cavity;

[0027] After the concrete material solidifies, it is demoulded to form a prefabricated staircase.

[0028] The above-described prefabricated staircase mold and production method for prefabricated stairs feature a simple structure, as the step rib assembly for forming the stair steps includes multiple step ribs, and the relative position between each pair of adjacent step ribs is adjustable, thereby achieving adjustable height dimensions of the prefabricated stair steps. During mold assembly, mold closing, and demolding, each step rib can be controlled to move toward or away from the side ribs in the same direction, allowing the entire assembly formed by the multiple step ribs to be assembled, closed, and demolded simultaneously. This simplifies the operations of mold assembly, mold closing, and demolding, thereby improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a prefabricated staircase mold in one embodiment of the present invention;

[0030] Figure 2 for Figure 1 The schematic structural diagram of the prefabricated staircase mold shown in another perspective;

[0031] Figure 3 for Figure 1 A top view of the precast staircase mould is shown;

[0032] Figure 4 for Figure 1 Bottom view of the precast staircase mould shown;

[0033] Figure 5 for Figure 1 A front view of the precast staircase mould is shown;

[0034] Figure 6 for Figure 1 A partial enlarged view of the prefabricated staircase mold shown;

[0035] Figure 7 Flowchart of a method for producing prefabricated stairs in one embodiment of the present invention. DETAILED DESCRIPTION

[0036] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0039] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0042] See also Figures 1 to 5 As shown, an embodiment of the present invention provides a prefabricated staircase mold, comprising a base 10, a bottom mold 12 (see Figure 4 ), first side rib assembly 20, and second side rib assembly (not shown). The bottom mold 12 is fixedly connected to the base 10. The first side rib assembly 20 and the second side rib assembly are also disposed on the base 10 and arranged around the bottom mold 12 to enclose the bottom mold 12 to form a casting cavity a for casting and forming the precast staircase.

[0043] The first rib assembly 20 includes a side rib 21 and a step rib assembly 22. The side rib 21 is fixedly connected to the base 10 and is located at the bottom mold 12 in the first direction A (see FIG. Figure 3 ) on one side. The step rib group 22 is located on the other side of the bottom mold 12 in the first direction A, and includes a second direction B (see FIG. Figure 3 ) are arranged in sequence. Each step rib 221 is provided on the base 10, and can be controlled to move closer to or away from the side rib 21 in the same direction. Every two adjacent step ribs 221 are matched with each other, and the relative positions in the moving direction of the step rib 221 are adjustable. The second rib assembly includes a first end rib group 31 and a second end rib group 32 mounted on the base 10. The first end rib group 31 and the second end rib group 32 are respectively located at the two ends of the bottom mold 12 in the second direction B, and the first end rib group 31, the second end rib group 32, the side rib 21, the step rib group 22 and the bottom mold 12 enclose the above-mentioned casting cavity a.

[0044] The above-mentioned prefabricated staircase mold has a simple structure because the step rib assembly 22 for forming the stair steps includes multiple step ribs 221, and the relative position between each pair of adjacent step ribs 221 is adjustable, thereby achieving the purpose of adjusting the height of the prefabricated stair steps. During mold assembly, mold closing, and demolding, because each step rib 221 can be controlled to move toward or away from the side ribs in the same direction, the entire assembly formed by the multiple step ribs 221 is molded, closed, and demolded simultaneously. This simplifies the mold assembly, mold closing, and demolding operations, thereby improving production efficiency and reducing production costs.

[0045] Specifically in the embodiment, the bottom mold 12 is detachably mounted on the base frame 10, so that the corresponding bottom mold 12 can be easily replaced according to the overall width of different prefabricated stairs. Optionally, the bottom mold 12 can be fixed to the base frame 10 by bolts.

[0046] Specifically in the embodiment, the side of the step rib 221 facing the side rib 21 has a first molding surface 222 for molding the tread of the stair step and a second molding surface 223 for molding the riser of the stair step. It should be noted that since the tread and riser of the stair step are perpendicular to each other, the first molding surface 222 and the second molding surface 223 of each step rib 221 are also arranged perpendicular to each other.

[0047] The first forming surface 222 of one of the two adjacent step ribs 221 is perpendicularly butted against the second forming surface 223 of the other, and the moving direction of the step rib 221 is parallel to the second forming surface 223. Thus, by adjusting the relative position of the two adjacent step ribs 221 in their moving direction, the vertical butting position of the first forming surface 222 of one step rib 221 and the second forming surface 223 of the other step rib 221 can be adjusted, thereby achieving the purpose of adjusting the step height.

[0048] In an embodiment of the present invention, the first sidewall assembly 20 further includes a limiting mechanism 224. A limiting mechanism 224 is provided between each pair of adjacent step sidewalls 221. The limiting mechanism 224 is used to limit the relative movement distance of the two adjacent step sidewalls 221. Thus, by replacing the limiting mechanisms 224 with different specifications, the relative position of the two adjacent step sidewalls 221 in their movement direction can be adjusted. It should be noted that the limiting mechanisms 224 with different specifications refer to limiting mechanisms 224 that limit the relative movement distances of the two adjacent step sidewalls 221 to different degrees.

[0049] Specifically, in this embodiment, the prefabricated stair mold further includes a first drive assembly 225 mounted on the base 10. The first drive assembly 225 is drivably connected to a step rib 221 of the step rib group 22, near the end of the second end rib group 32, to drive the step rib 221 toward or away from the side rib 21. Furthermore, the step rib 221 of the step rib group 22, near the end of the first end rib group 31, is fixedly connected to the first end rib group 31. Because a limiting mechanism 224 is provided between each pair of adjacent step ribs 221, when the first drive assembly 225 drives a step rib 221 of the step rib group 22, near the end of the second end rib group 32, toward or away from the side rib 21, the limiting mechanisms 224 can drive the remaining step ribs 221 toward or away from the side rib 21, thereby achieving mold closing or demolding. Alternatively, the first drive assembly 225 can employ a drive mechanism such as a hydraulic cylinder, which is not limited herein.

[0050] It should be noted that the first drive assembly 225 is used to drive the step side guard group 22 to move to achieve mold closing and demolding. During production, there is no need to lift the bulky step side guard group 22 multiple times, which reduces the operating risk of workers during production. At the same time, it reduces the workers' operation time for mold closing and demolding, avoids manual operation of the step side guard group 22 during mold closing and demolding, and is conducive to improving the service life of the mold and production efficiency.

[0051] Furthermore, a traction member 226 is installed on the side of the step rib 221 that is drivingly connected to the first drive assembly 225, facing away from the side rib 21. If the first drive assembly 225 is damaged, the traction member 226 can be connected to an external power source to drive the step rib 221 to move closer to or away from the side rib 21, thereby achieving mold closing or demolding of each step rib 221.

[0052] See Figure 1 and Figure 6As shown, specifically in the embodiment, the limiting mechanism 224 includes a slider 2241, a stopper 2243 and a slide rail 2242. The slider 2241 is fixedly connected to one of the two adjacent step ribs 221. The stopper 2243 and the slide rail 2242 are fixedly connected to the other of the two adjacent step ribs 221. In addition, the slider 2241 and the slide rail 2242 are slidably engaged, so that the relative movement of the two adjacent step ribs 221 is achieved by utilizing the movement of the slider 2241 along the slide rail 2242. There are two stoppers 2243, which are respectively located at both ends of the slide rail 2242, and are used to stop the slider 2241 moving along the slide rail 2242, so that the slider 2241 can only slide between the two stoppers 2243 along the slide rail 2242. In this way, the stops 2243 at both ends of the slide rail 2242 limit the distance (i.e., the stroke) that the slider 2241 can move along the slide rail 2242. It should be noted that different specifications of the limit mechanisms 224 refer to different spacings between the two stops 2243, that is, different distances that the slider 2241 can move along the slide rail 2242.

[0053] Furthermore, the limiting mechanism 224 also includes a fixed bracket 2244, to which the slide rail 2242 and the stopper 2243 are both fixedly connected. The fixed bracket 2244 is detachably fixed to the corresponding step rib 221. Thus, the slide rail 2242 and the stopper 2243 are integrally mounted on the fixed bracket 2244, facilitating assembly and disassembly of the limiting mechanism 224, thereby facilitating replacement. Optionally, the fixed bracket 2244 and the stopper 2243, as well as the fixed bracket 2244 and the slide rail 2242, can be fixedly connected by welding. Of course, other detachable assembly methods, such as bolt locking, may also be used, although this is not limited herein.

[0054] See Figures 1 to 3 As shown, in an embodiment of the present invention, a plurality of mutually parallel guide rails 11 are provided on the base 10, and the plurality of guide rails 11 correspond one-to-one to a plurality of step ribs 221. Support rollers 227 are mounted on the bottom of the step ribs 221. The support rollers 227 of each step rib 221 rollably engage with the corresponding guide rails 11, thereby supporting the step rib 221 using the support rollers 227. The step rib 221 is moved by the rolling of the support rollers 227 along the guide rails 11, making the movement of each step rib 221 smoother and more flexible under the drive of the first drive assembly 225.

[0055] Furthermore, a sliding block (not marked in the figure) is installed at the bottom of the step rib 221, and the sliding block of each step rib 221 slides on the corresponding guide rail 11, so that the movement of the step rib 221 is guided by the sliding of the sliding block along the guide rail 11, so that the movement of each step rib 221 under the drive of the first drive component 225 is more accurate and reliable.

[0056] In an embodiment of the present invention, the first end rib group 31 includes a first end rib 311, a second end rib 312 and a third end rib 313. The first end rib 311 and the second end rib 312 are relatively arranged on the base 10, and the first end rib 311 is spliced ​​with the corresponding end of the side rib 21, and the second end rib 312 is spliced ​​with a step rib 221 at the corresponding end of the step rib group 22. The third end rib 313 is arranged between the first end rib 311 and the second end rib 312. In this way, the first end rib 311, the second end rib 312, the third end rib 313 and the bottom mold 12 enclose a casting cavity for casting the bottom platform of the stairs of the prefabricated stairs. Specifically Figure 1 In the illustrated embodiment, the first end rib 311 is spliced ​​with the right end of the side rib 21 , and the second end rib 312 is spliced ​​with a step rib 221 at the right end of the step rib group 22 .

[0057] For ease of description, the step rib 221 in the step rib group 22 that is connected to the second end rib 312 is named a fixed step rib. Specifically, in the embodiment, the fixed step rib is detachably fixedly connected to the second end rib 312, and the first molding surface 222 of the fixed step rib is flush with the surface of the second end rib 312 facing the first end rib 311.

[0058] Because the fixed step rib is detachably fixedly connected to the second end rib 312, when the step rib assembly 22 is molded, the fixed step rib is locked and fixed to the second end rib 312, so that the fixed step rib, through the limiting mechanism 224, limits an adjacent step rib 221. This step rib 221, in turn, limits another adjacent step rib 221 through the limiting mechanism 224, and so on. Ultimately, the position of each step rib 221 is limited, thereby enclosing a casting cavity a capable of molding a precast staircase with a certain step height. When it is necessary to produce a precast staircase with a different step height, it is only necessary to replace the limiting mechanism 224 of the corresponding specification. This is simple to operate and does not require re-molding, thus reducing production costs.

[0059] Specifically, in this embodiment, the first end flange assembly 31 further includes a first boss flange 314, which is detachably connected to the top of the first end flange 311, the second end flange 312, the third end flange 313, and the fixed step flange, thereby enclosing a casting cavity for casting and forming the first boss located on the bottom landing of the staircase. Optionally, the first boss flange 314 can be bolted to the first end flange 311, the second end flange 312, the third end flange 313, and the fixed step flange.

[0060] It should be noted that the detachable fixed connection between the fixed step rib and the second end rib 312 is achieved by the first boss rib 314 being detachably fixedly connected to the second end rib 312 and the fixed step rib respectively.

[0061] Specifically, in this embodiment, the first end rib assembly 31 further includes a second drive assembly 315, which is mounted on the base 10 and is drivably connected to the third end rib 313. This second drive assembly 315 drives the third end rib 313 to move along the extension direction of the first end rib 311 and the second end rib 312, thereby enabling mold closing and demolding of the third end rib 313. Furthermore, by moving the third end rib 313 and / or replacing third end ribs 313 of different specifications, the production of stair landings of varying sizes can be accommodated. Alternatively, the second drive assembly 315 may employ a drive mechanism such as a hydraulic cylinder, which is not limited herein.

[0062] Specifically, in the embodiment, a first guide rail is provided on the base 10, and the first guide rail is located between the first end rib 311 and the second end rib 312. The third end rib 313 is slidably provided on the first guide rail and is drivingly connected to the second drive assembly 315. In this way, the first guide rail is used to guide the movement of the third end rib 313.

[0063] In an embodiment of the present invention, the second end rib group 32 includes a fourth end rib 321, a fifth end rib 322 and a sixth end rib 323. The fourth end rib 321 and the fifth end rib 322 are relatively arranged on the base 10, the fourth end rib 321 is spliced ​​with the corresponding end of the side rib 21, and the fifth end rib 322 is spliced ​​with a step rib 221 at the corresponding end of the step rib group 22. In this way, the fourth end rib 321, the fifth end rib 322, the sixth end rib 323 and the bottom mold 12 enclose a casting cavity for casting the stair top platform of the prefabricated stairs. Specifically Figure 1 In the illustrated embodiment, the fourth end rib 321 is spliced ​​with the left end of the side rib 21 , and the fifth end rib 322 is spliced ​​with a step rib 221 at the left end of the step rib group 22 .

[0064] Specifically, in this embodiment, the second end flange assembly 32 further includes a third drive assembly 325, which is mounted on the base 10 and is drivingly connected to the sixth end flange 323 to drive the sixth end flange 323 to move along the extension direction of the fourth end flange 321 and the fifth end flange 322, thereby achieving mold closing and demolding of the sixth end flange 323. Furthermore, by moving the sixth end flange 323 and / or replacing the sixth end flange 323 with a different size, the production of stair top landings of different sizes can be adapted. Alternatively, the third drive assembly 325 may employ a drive mechanism such as a hydraulic cylinder, which is not limited herein.

[0065] Specifically, in this embodiment, the second end flange assembly 32 further includes a second boss flange 324, which is detachably connected to the tops of the fourth end flange 321, the fifth end flange 322, and the sixth end flange 323 to enclose a casting cavity for casting a second boss located on the top landing of the staircase. Optionally, the second boss flange 324 can be bolted to the fourth end flange 321, the fifth end flange 322, and the sixth end flange 323, respectively.

[0066] Specifically in the embodiment, a second guide rail is provided on the base 10, and the second guide rail is located between the fourth end rib 321 and the fifth end rib 322. The sixth end rib 323 is slidably provided on the second guide rail and is drivingly connected to the third drive assembly 325. In this way, the movement of the sixth end rib 323 is guided by the second guide rail.

[0067] Based on the above prefabricated staircase mold, see Figure 7 As shown, the present invention also provides a production method for prefabricated stairs using the above-mentioned prefabricated staircase mold, comprising the following steps:

[0068] S10 , assembling the bottom mold 12 , the side ribs 21 , the first end rib group 31 , the second end rib group 32 and each step rib 221 of the step rib group 22 on the base 10 .

[0069] S20, adjusting the relative positions of two adjacent step ribs 221 according to the step height of the prefabricated staircase to be produced and assembling and connecting them to each other.

[0070] Specifically, the corresponding limiting mechanism 224 is selected according to the height of the steps of the prefabricated staircase to be produced, and the limiting mechanism 224 is assembled between every two adjacent step ribs 221 .

[0071] S30, controlling each step rib 221 of the step rib group 22 to move toward the side rib 21, so that the side rib 21, the first end rib group 31, the second end rib group 32 and the step rib group 22 are enclosed with the bottom mold 12 to form a casting cavity a.

[0072] S40, arranging a steel frame and embedded parts in the casting cavity a, and pouring concrete into the casting cavity a;

[0073] S50, after the concrete material is solidified, demoulding is performed to form a prefabricated staircase.

[0074] Specifically in the embodiment, step S30 specifically includes the following steps:

[0075] The first driving assembly 225 drives a step rib 221 of the step rib group 22, which is close to one end of the second end rib group 32, to move close to the side rib 21, thereby driving each step rib 221 to move close to the side rib 21, so that each step rib 221 moves into position and is limited by the limiting mechanism 224.

[0076] The third end rib 313 is driven by the second driving assembly 315 to move along the extension direction of the first end rib 311 and the second end rib 312 toward the casting cavity a, and the sixth end rib 323 is driven by the third driving assembly 325 to move along the extension direction of the fourth end rib 321 and the fifth end rib 322 toward the casting cavity a.

[0077] The first boss rib 314 is assembled on the top of the first end rib 311, the second end rib 312, the third end rib 313 and the fixed step rib. The second boss rib 324 is assembled on the top of the fourth end rib 321, the fifth end rib 322 and the sixth end rib 323.

[0078] Specifically in the embodiment, step S50 specifically includes the following steps:

[0079] After the concrete solidifies, the first boss rib 314 and the second boss rib 324 are removed;

[0080] The first driving assembly 225 drives a step rib 221 of the step rib group 22, which is located at one end of the second end rib group 32, to move away from the side rib 21, and drives each step rib 221 to move away from the side rib 21, thereby achieving demolding of the step rib 221.

[0081] The second driving assembly 315 is used to drive the third end rib 313 to be demoulded; and the third driving assembly 325 is used to drive the sixth end rib 323 to be demoulded.

[0082] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A prefabricated staircase mold, characterized in that: include: Base (10); A bottom mold (12) is fixedly connected to the base (10); A first rib assembly (20) comprises a side rib (21) and a step rib group (22), wherein the side rib (21) is fixedly connected to the base (10) and is located on one side of the bottom mold (12) in a first direction (A), and the step rib group (22) is located on the other side of the bottom mold (12) in the first direction (A), and comprises a plurality of step ribs (221) arranged in sequence along a second direction (B) intersecting the first direction (A), each of the step ribs (221) is provided on the base (10) and can be controlled to move closer to or away from the side rib (21) in the same direction; each two adjacent step ribs (221) are matched with each other, and the relative positions of the step ribs (221) in the moving direction are adjustable; A second side guard assembly comprises a first end side guard group (31) and a second end side guard group (32) mounted on the base (10), wherein the first end side guard group (31) and the second end side guard group (32) are respectively located at two ends of the bottom mold (12) in the second direction (B), and the first end side guard group (31), the second end side guard group (32), the side side guard (21), the step side guard group (22) and the bottom mold (12) enclose a casting cavity (a); The first end rib group (31) comprises a first end rib (311) and a second end rib (312) arranged relatively on the base (10), and a third end rib (313) arranged between the first end rib (311) and the second end rib (312), the first end rib (311) being spliced ​​with the corresponding end of the side rib (21), and the second end rib (312) being spliced ​​with one of the step ribs (221) at the corresponding end of the step rib group (22); The first end rib group (31) further includes a second drive assembly (315), which is mounted on the base (10) and is drivingly connected to the third end rib (313) to drive the third end rib (313) to move along the extension direction of the first end rib (311) and the second end rib (312).

2. The prefabricated staircase mold according to claim 1, characterized in that: The step rib (221) has a first molding surface (222) for molding the tread of a stair step and a second molding surface (223) for molding the riser of a stair step on a side facing the side rib (21), and the first molding surface (222) of one of two adjacent step ribs (221) and the second molding surface (223) of the other of the two adjacent step ribs (221) are vertically butted against each other; The moving direction of the step rib (221) is parallel to the second forming surface (223).

3. The prefabricated staircase mold according to claim 1, characterized in that: The first side rib assembly (20) further comprises a limiting mechanism (224), wherein the limiting mechanism (224) is provided between each two adjacent step side ribs (221), and the limiting mechanism (224) is used to limit the relative movement distance of the two adjacent step side ribs (221).

4. The prefabricated staircase mold according to claim 3, characterized in that: The limiting mechanism (224) includes a slider (2241), a stopper (2243) and a slide rail (2242); the slider (2241) is fixedly connected to one of the two adjacent step ribs (221); the stopper (2243) and the slide rail (2242) are fixedly connected to the other of the two adjacent step ribs (221); and the slider (2241) and the slide rail (2242) are slidably matched; there are two stoppers (2243), which are respectively located at both ends of the slide rail (2242) and are used to stop the slider (2241) sliding along the slide rail (2242).

5. The prefabricated staircase mold according to claim 4, characterized in that: The limiting mechanism (224) further comprises a fixed bracket (2244), the slide rail (2242) and the stop block (2243) are both fixedly connected to the fixed bracket (2244), and the fixed bracket (2244) is detachably fixedly connected to the corresponding step retaining edge (221).

6. The prefabricated staircase mold according to claim 3, characterized in that: The prefabricated staircase mold further comprises a first driving assembly (225) mounted on the base (10), wherein the first driving assembly (225) is drivingly connected to one of the step ribs (221) of the step rib group (22) adjacent to one end of the second end rib group (32); One of the step ribs (221) of the step rib group (22) close to one end of the first end rib group (31) is fixedly connected to the first end rib group (31).

7. The prefabricated staircase mold according to claim 1, characterized in that: The second end rib group (32) comprises a fourth end rib (321) and a fifth end rib (322) which are arranged relatively on the base (10), and a sixth end rib (323) which is arranged between the fourth end rib (321) and the fifth end rib (322); the fourth end rib (321) is spliced ​​with the corresponding end of the side rib (21); and the fifth end rib (322) is spliced ​​with one of the step ribs (221) at the corresponding end of the step rib group (22).

8. The prefabricated staircase mold according to claim 7, characterized in that: The second end rib group (32) further includes a third drive assembly (325), which is mounted on the base (10) and is drivingly connected to the sixth end rib (323) to drive the sixth end rib (323) to move along the extension direction of the fourth end rib (321) and the fifth end rib (322).

9. The prefabricated staircase mold according to claim 1, characterized in that: The base (10) is provided with a plurality of guide rails (11) parallel to each other, and the plurality of guide rails (11) correspond one to one with the plurality of step ribs (221). A supporting roller (227) and a sliding block are installed at the bottom of the step rib (221), and the supporting roller (227) is rollingly engaged with the corresponding guide rail (11), and the sliding block is slidingly engaged with the corresponding guide rail (11).

10. A method for producing prefabricated stairs using the prefabricated staircase mold according to any one of claims 1 to 9, characterized in that: The following steps are involved: Assembling the bottom mold (12), the side ribs (21), the first end rib group (31), the second end rib group (32), and each step rib (221) of the step rib group (22) on the base (10); Adjusting the relative positions of two adjacent step ribs (221) according to the step height of the prefabricated staircase to be produced and assembling and connecting them to each other; Controlling each of the step ribs (221) of the step rib group (22) to move toward the side rib (21), so that the side ribs (21), the first end rib group (31), the second end rib group (32), and the step rib group (22) and the bottom mold (12) enclose the casting cavity (a); Arranging a steel frame and embedded parts in the pouring cavity (a), and pouring concrete into the pouring cavity (a); After the concrete material solidifies, it is demoulded to form a prefabricated staircase.

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