A concrete precast stair mold

Abstract

The utility model discloses a concrete prefabricated stair mould which comprises two side moulds and a connecting assembly for connecting the two side moulds into one body, wherein an inner mould is arranged on one side mould, the lower part and the upper part of the side mould are respectively provided with a sealing mould, and end moulds are arranged at the two ends of the side mould, and the side mould, the end mould and the sealing mould jointly enclose a cavity for pouring concrete, and the utility model can be used for producing prefabricated stairs of different lengths by splicing according to customer requirements, so that the mould can be repeatedly used and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of precast stair technology, and more specifically to a precast concrete stair mold. Background Technology

[0002] Precast stairs are an important component in prefabricated buildings. During the production process, the stair platform, ramps, and treads are cast as a single piece, effectively increasing the overall structural strength of the staircase. Precast stairs are manufactured in the factory and then installed on the construction site, thus significantly improving the efficiency of prefabricated building construction.

[0003] After receiving an order, a precast staircase factory needs to make molds according to the customer's requirements and then mass-produce the stairs. However, the required staircase lengths vary from customer to customer, which means that the molds cannot be reused after a batch of precast stairs is produced, resulting in a large waste of resources. Utility Model Content

[0004] One advantage of this utility model is that it provides a precast concrete staircase mold. Although the staircase length requirements of each customer are different, the step length and height of the staircase are specified by industry standards. Therefore, this application provides a modular splicing staircase mold, which can be spliced ​​according to customer requirements to produce precast staircases of different lengths, thereby enabling the mold to be reused and saving costs.

[0005] To achieve at least one of the above advantages of this utility model, this utility model provides a precast concrete staircase mold, including two side molds and a connecting assembly for connecting the two side molds into one unit. One of the side molds is provided with an inner mold, and the lower and upper parts of the side mold are respectively provided with sealing molds. The two ends of the side mold are also provided with end molds. The side molds, end molds and sealing molds together form a cavity for injecting concrete.

[0006] According to one embodiment of the present invention, the side mold includes a head mold, a tail mold, and an extension mold that are detachably connected end to end, and the inner surfaces of the head mold, the tail mold, and the extension mold are all provided with inner molds.

[0007] According to one embodiment of the present invention, the inner mold is a stepped structure composed of several modules with right-angled triangular cross-sections. The inclined surfaces of the modules are connected to the side molds, and the ends of the inclined surfaces are flush with the ends of the side molds.

[0008] According to one embodiment of the present utility model, splicing connection grooves are fixedly provided on the head mold, tail mold and extension mold, and grooves are provided on the splicing connection grooves;

[0009] It also includes a splicing screw, with splicing nuts meshing at both ends. The splicing screw is coupled with the groove. After the head mold, tail mold and extension mold are connected, the splicing screw is placed into the two adjacent grooves and the splicing nuts are tightened to connect the adjacent head mold, tail mold and extension mold into one unit.

[0010] According to one embodiment of the present invention, the ends of the head mold, tail mold and extension mold are all provided with limit blocks and matching limit grooves.

[0011] According to one embodiment of the present invention, side mold connecting grooves are fixedly provided at corresponding positions of the two side molds, and grooves are provided on the side mold connecting grooves;

[0012] It also includes a side mold screw, with side mold nuts meshing at both ends. The side mold screw is coupled to the groove. By placing the side mold screw into two adjacent grooves and tightening the side mold nuts, the two side molds can be connected into one unit. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the large arm hairpin structure of this utility model. Figure 1 ;

[0015] In the attached diagram: 1. Frame, 2. Mold, 3. Head mold, 4. Side mold connecting groove, 5. Side mold nut, 6. Side mold lead screw, 7. Inner mold, 8. Splicing lead screw, 9. Splicing nut, 10. Splicing connecting groove, 11. Limiting block, 12. Extension mold, 13. Tail mold, 14. End mold, 15. Side mold. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description will be provided in conjunction with the appendix of this utility model. Figure 1 ~Appendix Figure 2 The present invention will be described in more detail below.

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0018] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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, the above terms should not be construed as limitations on this utility model.

[0019] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0020] This utility model provides a precast concrete staircase mold 2, including two side molds 15 and a connecting assembly for connecting the two side molds 15 into one unit. One side mold 15 is provided with an inner mold 7. The lower and upper parts of the side mold 15 are respectively provided with sealing molds. End molds 14 are provided at both ends of the side mold 15. The side molds 15, end molds 14 and sealing molds together form a cavity for injecting concrete. The side mold 15 includes a head mold 3, a tail mold 13 and an extension mold 12. The inner mold 7 is provided on the inner surface of the head mold 3, tail mold 13 and extension mold 12. The inner mold 7 is a stepped structure composed of several modules with right-angled triangular cross sections. The inclined surface of the module is connected to the side mold 15, and the end of the inclined surface is flush with the end of the side mold 15. The head mold 3, tail mold 13 and extension mold 12 are all fixedly provided with splicing connection grooves 10. The connecting groove 10 is provided with a groove; it also includes a splicing screw 8, the two ends of which are engaged with splicing nuts 9. The splicing screw 8 is coupled with the groove. After the head mold 3, tail mold 13 and extension mold 12 are connected, the splicing screw 8 is placed into the two adjacent grooves and the splicing nuts 9 are tightened to connect the adjacent head mold 3, tail mold 13 and extension mold 12 into one piece; the ends of the head mold 3, tail mold 13 and extension mold 12 are all provided with limit blocks 11 and matching limit grooves; the corresponding positions of the two side molds 15 are fixedly provided with side mold connecting grooves 4, and the side mold connecting grooves 4 are provided with grooves; it also includes a side mold screw 6, the two ends of which are engaged with side mold nuts 5. The side mold screw 6 is coupled with the groove. The side mold screw 6 is placed into the two adjacent grooves and the side mold nuts 5 are tightened to connect the two side molds 15 into one piece.

[0021] The first embodiment of this utility model is as follows:

[0022] A precast concrete stair mold 2 includes two side molds 15 and a connecting component for connecting the two side molds 15 into one unit. The side mold 15 includes a head mold 3, a tail mold 13, and an extension mold 12. The three or two of them are connected end to end, which can form precast stair molds 2 of different lengths to meet the needs of different customers. It does not require the creation of new molds 2, so the molds 2 can be reused, thereby saving costs. One of the side molds 15 is provided with an inner mold 7. The inner mold 7 is a stepped structure composed of several modules with right-angled triangular cross sections. The inclined surfaces of the modules are connected to the side molds 15. Its function in the mold 2 is to form the steps of the staircase. The ends of the inclined surfaces are flush with the ends of the side molds 15, that is, flush with the ends of the head mold 3, the extension mold 12, or the tail mold 13. This ensures that when the head mold 3 is connected to the tail mold 13, or the head mold 3 is connected to the extension mold 12, or the extension mold 12 is connected to the tail mold 13, the adjacent inner molds 7 can be connected end to end to form natural steps.

[0023] The head mold 3, tail mold 13, and extension mold 12 are all fixedly provided with splicing connection grooves 10, and the splicing connection grooves 10 are provided with grooves; it also includes a splicing screw rod 8, and the two ends of the splicing screw rod 8 are engaged with splicing nuts 9. The splicing screw rod 8 is coupled with the grooves. After the head mold 3, tail mold 13, and extension mold 12 are connected in pairs or in sequence, the splicing screw rod 8 is placed into the two adjacent grooves and the splicing nuts 9 are tightened to connect the adjacent head mold 3, tail mold 13, and extension mold 12 into one unit, making installation and disassembly more convenient.

[0024] To ensure stable connection and prevent displacement of adjacent head mold 3, tail mold 13, or extension mold 12, limit blocks 11 and matching limit grooves are provided at the ends of head mold 3, tail mold 13, and extension mold 12. On the one hand, after the limit block 11 is inserted into the limit groove, the adjacent head mold 3, tail mold 13, and extension mold 12 cannot move, and the inner surfaces of head mold 3, tail mold 13, and extension mold 12 can form a flat plane. On the other hand, when the splicing nut 9 is tightened, it will correspond with the limit block 11 and the limit groove, and the splicing and fixing can be completed by a set of splicing screws 8 and splicing nuts 9.

[0025] After the side mold 15 is determined to a suitable length through the splicing structure, the two side molds 15 are connected into one piece. The corresponding positions of the two side molds 15 are fixedly provided with side mold connecting grooves 4, and the side mold connecting grooves 4 are provided with grooves. The two ends of the side mold screw 6 are engaged with side mold nuts 5. The side mold screw 6 is coupled with the grooves. The side mold screw 6 is placed into the two adjacent grooves and the side mold nuts 5 are tightened to connect the two side molds 15 into one piece. The lower and upper parts of the side mold 15 are also provided with sealing molds, and the two ends of the side mold 15 are also provided with end molds 14. The side mold 15, end molds 14 and sealing molds together form a cavity for injecting concrete. The sealing molds and end molds 14 are detachably connected to the side molds 15. On the one hand, they play a sealing role, and on the other hand, they can determine the distance between the two side molds 15. After the side mold screw 6 and the side mold nuts 5 are tightened, a stable whole can be formed.

[0026] Both the sealing mold and the end mold 14 are plate-shaped structures with folded edges perpendicular to the plate-shaped structure at their edges. During installation, the folded edges contact and connect with the side mold 15. At the same time, grooves are set at corresponding positions on the side mold 15 for positioning. The two side molds 15 are tightened by the side mold screw 6 and the side mold nut 5 to press the sealing mold and the end mold 14 tightly in the predetermined position.

[0027] The end mold 14 is of standard size, while the sealing mold is prefabricated in multiple different sizes. After determining the size of the side mold 15, a suitable sealing mold can be selected for use.

[0028] It also includes a frame 1, which is made of welded I-beams, for holding a mold 2 consisting of a side mold 15, an end mold 14 and a sealing mold.

[0029] It should be noted that the terms "first, second, and third" used in this utility model are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.

[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the implementation of the present invention may have any modifications or variations.

Claims

1. A precast concrete staircase mold, characterized in that: It includes two side molds and a connecting assembly for connecting the two side molds into one unit. One of the side molds is provided with an inner mold. The lower and upper parts of the side mold are respectively provided with sealing molds. The two ends of the side mold are also provided with end molds. The side mold, end molds and sealing molds together form a cavity for injecting concrete. The side mold includes a head mold, a tail mold, and an extension mold that are detachably connected end to end.

2. The precast concrete staircase mold according to claim 1, characterized in that: The inner surfaces of the head mold, tail mold, and extension mold are all provided with inner molds.

3. The precast concrete staircase mold according to claim 2, characterized in that: The inner mold is a stepped structure composed of several modules with right-angled triangular cross-sections. The inclined surfaces of the modules are connected to the side molds, and the ends of the inclined surfaces are flush with the ends of the side molds.

4. The precast concrete staircase mold according to claim 2, characterized in that: The head mold, tail mold, and extension mold are all fixedly provided with splicing connection grooves, and the splicing connection grooves are provided with grooves. It also includes a splicing screw, with splicing nuts engaged at both ends. The splicing screw is coupled to a groove. After the head mold, tail mold and extension mold are connected, the splicing screw is placed into two adjacent grooves and the splicing nuts are tightened to connect the adjacent head mold, tail mold and extension mold into one unit.

5. The precast concrete staircase mold according to claim 2, characterized in that: The ends of the head mold, tail mold, and extension mold are all provided with limit blocks and matching limit grooves.

6. The precast concrete staircase mold according to claim 1, characterized in that: The two side molds are each fixedly provided with a side mold connecting groove at the corresponding position, and the side mold connecting groove is provided with a groove. It also includes a side mold screw, with side mold nuts meshing at both ends of the side mold screw. The side mold screw is coupled to a groove. By placing the side mold screw into two adjacent grooves and tightening the side mold nuts, the two side molds can be connected into one unit.

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