Special mold for prefabricated stairs

Abstract

The utility model provides a special mould for a prefabricated stair, which relates to the technical field of stair moulds and comprises a bottom frame and an inner mould. A driving motor is installed on the front side face of the bottom frame, a two-way screw is installed on a motor shaft of the driving motor, and the outer side face of the two-way screw is connected with a movable frame in an engaged mode. Vertical plates are welded to the front side face and the rear side face of the inner mold, and a bottom plate is welded to the lower side face of the inner mold. A bottom frame is welded to the lower side face of the vertical plate, guide supporting rods are welded to the left side face and the right side face of the vertical plate and welded to the stand column, a trowelling motor is installed on the front side face of the vertical plate, and a threaded rod is installed on a motor shaft of the trowelling motor and rotationally connected with the vertical plate. Through the arrangement of the bidirectional screw rod, the movable frame, the movable plate, the outer mold and the inner mold, automatic opening and closing of the outer mold and the inner mold are achieved, the production efficiency of concrete stairs is improved, and the problems that a traditional stair mold is low in production efficiency, and mold opening and mold closing work wastes time and labor are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stair moulds, and more specifically, relates to a special mould for prefabricated stairs. Background Art

[0002] Prefabricated staircase molds are high-quality staircase molds manufactured using advanced technology and modular design concepts. With its unique prefabricated design, it effectively reduces material waste, is not only convenient for transportation and storage, but also greatly improves construction efficiency. At present, prefabricated staircase molds are mostly made of two sets of metal molds assembled in opposite directions. Reinforced concrete is filled between the two sets of molds. After the concrete is completely solidified, the two sets of molds are disassembled and separated by manual lifting or high-altitude lifting with a crane to obtain modular concrete staircase products. It can be seen that prefabricated staircase molds made of metal are heavy, and the staircase molds themselves do not have the function of automatic mold opening and closing. Therefore, whether it is carried out by manual lifting or high-altitude lifting with a crane, it is time-consuming and labor-intensive. In addition, the mold is easy to fall and topple over, and the lifting process is dangerous. In addition, traditional prefabricated staircase molds can only produce one set of stairs at a time, and the production efficiency is low. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a special mold for prefabricated stairs to solve the problems of low production efficiency of traditional staircase molds and time-consuming and labor-intensive mold opening and closing operations.

[0004] The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure is, and an end of sliding panel withstands on the back of the interlocking structure to support the bottom of the interlocking structure.

[0005] Furthermore, there are two groups of movable racks, which are symmetrically distributed front to back. The front and rear sides of each group of movable racks are provided with threaded through holes that pass through the front and rear sides. The forward threaded end of the bidirectional screw is engaged and connected in the threaded through hole of the front movable rack, and the reverse threaded end of the bidirectional screw is engaged and connected in the threaded through hole of the rear movable rack. Cylindrical protrusions are provided on the upper side of the movable rack near the left and right ends.

[0006] Furthermore, there are two groups of movable plates, which are symmetrically distributed left and right. The upper side of each group of movable plates is provided with two groups of oblique through grooves symmetrically distributed front and back, and the convex columns on the upper side of the movable frame are inserted into the oblique through grooves of the movable plates.

[0007] Furthermore, a threaded through hole is provided at the center of the front side of the moving block, the outer side of the threaded rod is threadedly engaged in the threaded through hole of the moving block, and the lower side of the moving block is attached to the upper side of the inner mold.

[0008] Furthermore, the left side and the right side of the inner mold are both provided with grooves, and the two groups of grooves of the inner mold are respectively opposite to the two groups of outer molds on the left and right.

[0009] Furthermore, there are two groups of push plates, which are symmetrically distributed on the left and right sides. Two groups of through holes are provided on the left side of each group of push plates near the front and rear ends, and the guide support rods are inserted into the through holes of the push plates.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. In the utility model, a threaded engagement transmission structure composed of a driving motor and a moving frame through a bidirectional screw enables the nested sliding structure composed of a convex column of the moving frame and an oblique through groove of the moving plate to drive the outer mold bolted on the two sets of push plates to move toward the inner mold along the guide support rod, thereby realizing the automatic opening and closing of the outer mold and the inner mold, abandoning the traditional crane lifting and manual lifting methods of mold opening and closing, not only eliminating the dangerous situation of mold tipping and injuring people, but also effectively saving labor and material costs.

[0012] 2. In the utility model, through the two sets of grooves on the left and right sides of the inner mold and the opposing arrangement structure of the two sets of outer molds, one set of inner molds and the two sets of outer molds cooperate with each other, so that one set of prefabricated staircase special molds can simultaneously complete the pouring and molding work of two sets of concrete stairs, greatly improving the pouring production efficiency of concrete stairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the utility model when viewed from the side.

[0015] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0016] Figure 4 It is a front view structural schematic diagram of the present utility model.

[0017] Figure 5 It is a schematic diagram of the structure of the utility model when viewed from above.

[0018] Figure 6 It is a left-side structural schematic diagram of the present utility model.

[0019] Figure numerals: 1. Moving plate; 2. Support plate; 3. Column; 4. Base frame; 5. Driving motor; 6. Vertical plate; 7. Inner mold; 8. Threaded rod; 9. Smoothing motor; 10. Guide support rod; 11. Push spring; 12. Moving block; 13. Smoothing plate; 14. Bidirectional screw; 15. Moving frame; 16. Push plate; 17. Outer mold; 18. Base plate. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figures 1-6 As shown, the utility model provides a special mold for prefabricated stairs, including a base frame 4; the upper side of the base frame 4 is welded to the column 3, the upper side of the base frame 4 is welded to the support plate 2, the support plate 2 is welded to the column 3, the front side of the base frame 4 is installed with a driving motor 5, the motor shaft of the driving motor 5 is installed with a bidirectional screw 14, the outer side of the bidirectional screw 14 is meshed with a moving frame 15; it also includes an inner mold 7, a push spring 11 and a moving block 12; the front side and the rear side of the inner mold 7 are welded to the vertical plate 6, and the lower side of the inner mold 7 is welded to the base plate 18; the lower side of the vertical plate 6 The surface is welded with the base frame 4, the left and right sides of the vertical plate 6 are welded with the guide support rod 10, the guide support rod 10 is welded to the column 3, the front side of the vertical plate 6 is installed with a smoothing motor 9, and the motor shaft of the smoothing motor 9 is installed with a threaded rod 8, and the threaded rod 8 is rotatably connected to the vertical plate 6; the left and right sides of the moving block 12 are welded with a trowel plate 13; one end of the pushing spring 11 is welded to the column 3, and the other end of the pushing spring 11 is welded to the push plate 16; one side of the push plate 16 is connected to the outer mold 17 by bolts, and the other side of the push plate 16 is welded to the moving plate 1.

[0022] In the embodiment of the present disclosure, there are two groups of mobile frames 15, and the mobile frames 15 are symmetrically distributed front to back. The front side and rear side of each group of mobile frames 15 are provided with threaded through holes that pass through the front and back. The positive threaded end of the bidirectional screw 14 is engaged and connected in the threaded through hole of the front side mobile frame 15, and the reverse threaded end of the bidirectional screw 14 is engaged and connected in the threaded through hole of the rear side mobile frame 15, so that the bidirectional screw 14 drives the two groups of mobile frames 15 to move forward and backward in opposite directions during the rotation process. The upper side of the mobile frame 15 is provided with cylindrical protrusions near the left and right ends.

[0023] In the disclosed embodiment, there are two groups of movable plates 1, which are symmetrically distributed left and right. The upper side surface of each group of movable plates 1 is provided with two groups of oblique through grooves symmetrically distributed front and back. The convex columns on the upper side surface of the movable frame 15 are inserted into the oblique through grooves of the movable plate 1. When the movable frame 15 is moving, the two groups of convex columns of the movable frame 15 push the two groups of movable plates 1 to move left and right in opposite directions through the oblique through grooves of the movable plate 1, so that the two groups of movable plates 1 respectively drive the push plates 16 to complete the opening and closing of the mold.

[0024] In the embodiment of the present disclosure, a threaded through hole extending from front to back is provided at the center position of the front side surface of the moving block 12, the outer side surface of the threaded rod 8 is threadedly engaged with the threaded through hole of the moving block 12, and the lower side surface of the moving block 12 is attached to the upper side surface of the inner mold 7. The threaded rod 8 drives the moving block 12 to move stably back and forth along the upper side surface of the inner mold 7, so that the trowel plates 13 on the left and right sides of the moving block 12 smooth the upper side surface of the concrete filled between the outer mold 17 and the inner mold 7, so that the surface of the concrete remains flat after solidification.

[0025] In the disclosed embodiment, grooves are provided on the left and right sides of the inner mold 7. The two groups of grooves of the inner mold 7 are respectively opposite to the two groups of outer molds 17 on the left and right, so that one group of molds can simultaneously cast and produce two groups of concrete staircase products.

[0026] In the embodiment of the present disclosure, there are two groups of push plates 16, and the push plates 16 are symmetrically distributed on the left and right sides. Two groups of through holes are provided on the left side of each group of push plates 16 near the front end and the rear end. The guide support rod 10 is inserted into the through holes of the push plates 16, so that the guide support rod 10 supports the support push plates 16 through the through holes of the support push plates 16. In the process of the movable plate 1 pushing the support push plates 16 to move left and right, the support push plates 16 move in a directional manner along the guide support rod 10, so that the outer mold 17 connected by the bolts of the push plates 16 is stably docked with the groove of the inner mold 7.

[0027] The specific usage and function of this embodiment are as follows:

[0028] When the two sets of movable frames 1 are in the same direction, the two sets of movable frames 1 are moved in the opposite direction. The two groups of gaps between the inner molds 7 form a stair structure, and then concrete is injected into the two groups of gaps. Then the construction workers insert a tamping rod into the gap between the outer mold 17 and the inner mold 7 to vibrate the concrete so that the concrete is fully filled into the mold. After filling is completed, the smoothing motor 9 drives the threaded rod 8 to rotate. Since the outer side of the threaded rod 8 is threadedly engaged with the threaded through hole of the moving block 12, the threaded rod 8 drives the trowel plate 13 welded to the left and right sides of the moving block 12 to move forward or backward. The trowel plate 13 smoothes the concrete surface. After the concrete is completely solidified, the drive motor 5 rotates in the opposite direction, and the bidirectional screw 14 drives the two groups of protrusions of the moving frame 15 to push the oblique groove of the moving plate 1, so that the moving plate 1 drives the push plate 16 along the guide support rod 10 to overcome the thrust of the push spring 11, so that the two groups of outer molds 17 are separated from the inner mold 7, thereby completing the mold opening work of the prefabricated staircase special mold.

[0029] All of the above components are mounted, connected, or configured using conventional mechanical methods, such as welding, threaded connections, and screw connections. The specific structures, models, and coefficients of all components are proprietary technologies, and any method that can achieve the desired effect may be employed. The drive motor 5 and trowel motor 9 are both commercially available components. Upon purchase, they require connection according to the included instruction manual, so further description is omitted.

[0030] The technical solutions of the present invention are not limited to the scope of the embodiments of the present invention, and the technical contents not described in detail in the present invention are all well-known technologies.

Claims

1. A special mold for prefabricated stairs, comprising a base frame (4); a column (3) is welded to the upper side of the base frame (4); a support plate (2) is welded to the upper side of the base frame (4); the support plate (2) is welded to the column (3); a driving motor (5) is installed on the front side of the base frame (4); a bidirectional screw (14) is installed on the motor shaft of the driving motor (5); and the outer side of the bidirectional screw (14) is meshedly connected to the moving frame (15); characterized in that: The inner mold (7) further comprises an inner mold (7), a push spring (11) and a moving block (12); the front side and the rear side of the inner mold (7) are welded to the vertical plate (6), and the lower side of the inner mold (7) is welded to the bottom plate (18); the lower side of the vertical plate (6) is welded to the bottom frame (4), the left side and the right side of the vertical plate (6) are welded to the guide support rod (10), the guide support rod (10) is welded to the column (3), and the front side of the vertical plate (6) is installed with a smoothing motor (9 ), a threaded rod (8) is installed on the motor shaft of the smoothing motor (9), and the threaded rod (8) is rotatably connected to the vertical plate (6); the left side and the right side of the moving block (12) are welded to the smoothing plate (13); one end of the pushing spring (11) is welded to the vertical column (3), and the other end of the pushing spring (11) is welded to the push plate (16); one side of the push plate (16) is connected to the outer mold (17) by bolts, and the other side of the push plate (16) is welded to the moving plate (1).

2. A special mold for prefabricated stairs according to claim 1, characterized in that: The number of the movable frames (15) is two groups, and the movable frames (15) are symmetrically distributed front and back. The front side and rear side of each group of movable frames (15) are provided with threaded through holes that pass through the front and back. The positive threaded end of the bidirectional screw (14) is engaged with the threaded through hole of the front movable frame (15), and the reverse threaded end of the bidirectional screw (14) is engaged with the threaded through hole of the rear movable frame (15). The upper side of the movable frame (15) is provided with cylindrical protrusions near the left and right ends.

3. A special mold for prefabricated stairs according to claim 1, characterized in that: The number of the movable plates (1) is two groups, and the movable plates (1) are symmetrically distributed left and right. The upper side surface of each group of movable plates (1) is provided with two groups of oblique through grooves symmetrically distributed front and back, and the protruding columns on the upper side surface of the movable frame (15) are inserted into the oblique through grooves of the movable plates (1).

4. A special mold for prefabricated stairs according to claim 1, characterized in that: A threaded through hole extending from front to back is provided at the center of the front side of the moving block (12); the outer side of the threaded rod (8) is threadedly engaged in the threaded through hole of the moving block (12); and the lower side of the moving block (12) is attached to the upper side of the inner mold (7).

5. The special mold for prefabricated stairs according to claim 1, characterized in that: The left side and the right side of the inner mold (7) are both provided with grooves, and the two groups of grooves of the inner mold (7) are respectively opposite to the two groups of outer molds (17) on the left and right.

6. A special mold for prefabricated stairs according to claim 1, characterized in that: The number of the push plates (16) is two groups, and the push plates (16) are symmetrically distributed on the left and right sides. Two groups of through holes are provided on the left side of each group of push plates (16) near the front end and the rear end, and the guide support rods (10) are inserted into the through holes of the push plates (16).

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