Prefabricated concrete prefabricated guardrail pouring mould box with openable and closable end plates

By designing a precast concrete guardrail casting mold with openable end plates, the problem of difficult demolding in traditional construction was solved, achieving rapid demolding and efficient production.

CN224170060UActive Publication Date: 2026-04-28SHANGHAI ELECTRIC RES CONCRETE (XUZHOU) HEAVY IND +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI ELECTRIC RES CONCRETE (XUZHOU) HEAVY IND
Filing Date
2025-03-25
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Traditional concrete guardrails require long on-site pouring construction cycles and are labor-intensive. The demolding process is costly and inefficient, and the separation of the mold box from the concrete is difficult, which can easily damage the product.

Method used

Design a precast concrete guardrail casting mold box with openable end plates. Through the cooperation of snap-fit ​​components and mold opening and closing equipment, the mold box and the precast concrete guardrail can be quickly separated, reducing the labor intensity of demolding and improving efficiency.

Benefits of technology

This enabled rapid demolding of concrete guardrails, reduced labor intensity, improved production efficiency, and ensured product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a prefabricated concrete prefabricated guardrail pouring mold box with openable and closable end plates. The prefabricated concrete prefabricated guardrail pouring mold box comprises a mold table, a bottom plate assembly, side plate assemblies, end plate assemblies, buckle assemblies and opposite pull rod assemblies. During use, the mold table is placed on a vibration table; the bottom plate assembly is fixed to a mold table, the side plate assembly is installed on one side of the bottom plate assembly, and the two end plate assemblies are installed at the two ends of the bottom plate assembly in a hinged mode and can turn over around the hinged position of the end plate assemblies and the bottom plate assembly. The end plate assembly is fixedly connected with the side plate assembly or the bottom plate assembly through the buckle assembly, and the buckle assembly can be matched with mold opening and closing equipment to be rapidly opened. And the upper openings of the bottom plate assembly and the side plate assembly are tensioned and locked through the opposite pull rod assembly. The end plates can be quickly opened and closed, demolding operation is facilitated, labor intensity is reduced, production efficiency is improved, the mold box is compact in pouring forming, and product quality is high.
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Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, and in particular to a precast concrete guardrail casting mold with openable and closable end plates. Background Technology

[0002] In the construction of road traffic safety facilities, precast concrete guardrails play a crucial role, effectively preventing vehicles from crossing the lane and ensuring driving safety. Traditional on-site casting construction methods for concrete guardrails have many drawbacks. On-site casting requires a large amount of manual labor for tasks such as formwork erection, concrete mixing, and pouring; the construction period is long; it is greatly affected by external factors such as weather; and the quality of on-site construction is difficult to guarantee with high consistency.

[0003] In existing precast concrete railing production using casting molds, the molds are often fixed models. Before lifting the solidified railing out of the mold, the fixing bolts of the mold must be manually removed to separate the mold from the solidified concrete railing. After the concrete hardens, due to the strong adhesion between the mold and the concrete, and poor demolding angle or unreasonable demolding structure, construction workers often need to spend a lot of time and effort on demolding. The demolding process is costly, labor-intensive, and inefficient; it may even damage the precast railing during demolding, affecting product quality. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a precast concrete guardrail casting mold box with openable and closable end plates. The end plates can be opened and closed quickly, facilitating demolding operations, reducing labor intensity and improving production efficiency. Furthermore, the mold box ensures tight casting and high product quality.

[0005] To achieve the above objectives, this utility model provides a precast concrete guardrail casting mold box with openable and closable end plates, including a mold platform, a base plate assembly, side plate assemblies, end plate assemblies, snap-fit ​​assemblies, and tie rod assemblies. In use, the mold platform is placed on a vibration table; the base plate assembly is fixed to the mold platform; the side plate assemblies are installed on one side of the base plate assembly; two sets of end plate assemblies are provided, and the two end plate assemblies are hinged to both ends of the base plate assembly, allowing them to rotate around the hinge point; the end plate assemblies are connected and fixed to the side plate assembly or the base plate assembly via snap-fit ​​assemblies, which can be quickly opened with the help of an opening and closing mold device; the upper openings of the base plate assembly and the side plate assembly are tightened and locked by tie rod assemblies.

[0006] Furthermore, the mold platform includes a base frame and a base plate fixing frame. The base frame is a square frame formed by welding several channel steels arranged longitudinally and transversely. The base plate fixing frame is welded to the base frame and is used to support and fix the base plate assembly. Several groups of base plate fixing frames are arranged in a square along the length of the base frame. Each base plate fixing frame is composed of several fixing pillars. The height of the fixing pillars increases progressively along the width of the base frame to adapt to the bottom contour of the base plate assembly.

[0007] Furthermore, the base plate assembly includes a base plate and a base plate frame; the base plate frame is welded and fixed to the side wall of the base plate near the mold table, and the base plate fixing frame is connected to the base plate frame; the side plate assembly is fixed to one side of the base plate, and the side plate assembly includes a side plate and a side plate frame; the side plate frame is welded and fixed to the outer side wall of the side plate away from the base plate assembly.

[0008] Furthermore, the side plate also includes guardrail forklift slot forming blocks, and there are two guardrail forklift slot forming blocks, which are fixed to the side wall of the side plate away from the side plate frame.

[0009] Furthermore, the end plate assembly includes an end plate, an end plate frame, a hinge pin, a snap-fit ​​fixing pin, and a mold opening fixing sleeve;

[0010] The end plate frame is welded and fixed to one side wall of the end plate. The hinge pin is set at the bottom of the end plate, and the end plate is hinged to the base plate assembly through the hinge pin. The mold opening fixing sleeve is made of hollow square tube and is fixed in the middle of the end plate frame. The buckle fixing shaft is welded and fixed to both ends of the end plate and cooperates with the buckle assembly to fix the end plate.

[0011] The buckle assembly includes a buckle, a fixed pivot, a buckle compression spring, and a locking tension spring. The fixed pivot is installed on the outer wall of the side plate or the bottom plate. One end of the buckle compression spring and the locking tension spring are connected to the buckle, and the other end is connected to the side plate or the bottom plate to provide locking tension. The buckle is rotatably connected to the fixed pivot. The buckle rotates around the fixed pivot to achieve clamping and disengagement with the buckle fixed pivot.

[0012] Furthermore, the base plate assembly also includes end plate guide sleeve I, which is installed at both ends of the base plate along its length; the side plate assembly also includes end plate guide sleeve II, which is fixedly installed at both ends of the side plate along its length; two guide shafts are provided on the end plate, and the bottom end plate guide sleeve I and the end plate guide sleeve II cooperate with the two guide shafts on the end plate to achieve the guidance of the end plate closure.

[0013] Furthermore, the base plate assembly also includes a tie rod fixing seat I, which is welded and fixed to the relatively higher side of the base plate when it is installed on the mold table; the side plate assembly also includes a tie rod fixing seat II, which is welded and fixed to one side of the side plate along its length and is opposite to the position of the tie rod fixing seat I.

[0014] The tie rod assembly includes a threaded rod, a washer, and a nut. The two ends of the threaded rod are respectively inserted into tie rod fixing seat I and tie rod fixing seat II. By sequentially fitting the washer and nut onto the two ends of the threaded rod and tightening the nut to secure it, the tension and locking of the side plate and the top of the bottom plate are achieved.

[0015] The beneficial effects of this utility model are:

[0016] This utility model discloses a precast concrete guardrail casting mold box with openable and closable end plates. The concrete is vibrated by placing the mold on a vibrating table to ensure that the guardrail is tightly cast and prevents casting defects. The buckle components at the end plates of the mold box can be quickly opened and closed by the mold opening and closing equipment, so that the mold box can be quickly separated from the precast concrete guardrail, realizing the rapid demolding of the precast concrete guardrail, reducing the labor intensity of demolding and improving labor efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the mold platform in this utility model.

[0019] Figure 3 This is a structural schematic diagram of the bottom plate assembly in this utility model.

[0020] Figure 4 This is a structural schematic diagram of the side panel assembly in this utility model.

[0021] Figure 5 This is a front view of the side panel assembly in this utility model.

[0022] Figure 6 This is a structural schematic diagram of the mid-end plate assembly of this utility model.

[0023] Figure 7 This is a structural schematic diagram of the buckle assembly in this utility model.

[0024] Figure 8 This is a schematic diagram of the structure of the tie rod assembly in this utility model.

[0025] In the diagram: 1. Mold table; 11. Base frame; 12. Base plate fixing frame; 2. Base plate assembly; 21. Base plate; 22. Base plate skeleton; 23. End plate fixing piece; 231. Rib plate; 232. Connecting plate; 24. End plate guide sleeve I; 25. Tie rod fixing seat I; 3. Side plate assembly; 31. Side plate; 32. Side plate skeleton; 33. Guardrail forklift slot forming block; 34. End plate guide sleeve II; 35. Tie rod fixing seat II; 4. End plate assembly; 41. End plate; 42. End plate skeleton; 43. Hinge pin; 44. Guide shaft; 45. Buckle fixing shaft; 46. Mold opening fixing sleeve; 5. Buckle assembly; 51. Buckle; 52. Fixing pivot; 53. Buckle compression spring; 54. Locking tension spring; 55. Limiting plate; 6. Tie rod assembly; 61. Threaded rod; 62. Washer plate; 63. Nut. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model discloses a precast concrete guardrail casting mold box with openable and closable end plates.

[0028] Reference Figure 1 A precast concrete guardrail casting mold box with openable end plates includes a mold platform 1, a base plate assembly 22, a side plate assembly 3, an end plate assembly 4, a buckle assembly 5, and a tie rod assembly 6.

[0029] The base plate assembly 22 is fixed on the mold table 1, the side plate assembly 3 is installed on one side of the base plate assembly 22, and the end plate assembly 4 is hinged to both ends of the base plate assembly 22 by pins. The end plate assembly 4 is connected to the side plate assembly 3 by a snap-fit ​​assembly 5, and the upper openings of the base plate assembly 22 and the side plate assembly 3 are tightened by a tie rod assembly 6. The mold box is placed on a vibrating table by the mold table 1 to achieve concrete vibration, ensuring that the guardrail is poured tightly and formed. The snap-fit ​​assembly 5 can be used with the mold opening and closing equipment to quickly open, realizing the rapid separation of the precast concrete guardrail from the base plate 21, side plate 31, and end plate 41, saving the separation time of the solidified guardrail from the mold box, reducing the labor intensity of demolding, and improving labor efficiency.

[0030] Reference Figure 2 The mold platform 1 includes a base frame 11 and a base plate fixing frame 12. The base frame 11 is a square frame formed by welding several channel steels arranged longitudinally and transversely. The base plate fixing frame 12 is welded and fixed to the base frame 11 to support and fix the base plate assembly 22. Several sets of base plate fixing frames 12 are arranged in a square along the length of the base frame 11. The base plate fixing frame 12 is composed of several fixing pillars. The height of the fixing pillars increases progressively along the width of the base frame 11 to adapt to the bottom contour of the base plate assembly 22.

[0031] Reference Figure 3The base plate assembly 22 includes a base plate 21, a base plate frame 22, an end plate fixing component 23, an end plate guide sleeve I 24, and a tie rod fixing seat I 25. The base plate frame 22 is formed by welding several horizontal and vertical bars vertically and interlaced. The base plate frame 22 is welded and fixed to the side wall of the base plate 21 near the mold table 1. The base plate fixing frame 12 is connected to the base plate frame 22.

[0032] The end plate fixing member 23 is provided at both ends of the base plate 21 along its length. The end plate fixing member 23 includes a stiffening plate 231 and a connecting plate 232. The connecting plate 232 is welded and fixed to the end of the base plate 21 and is located on the side of the base plate 21 near the mold table 1. The stiffening plate 231 is welded and fixed between the base plate 21 and the connecting plate 232.

[0033] The end plate guide sleeve I24 is located at one end of the connecting plate 232 and passes through and is fixed inside the connecting plate 232. Several tie rod fixing seats I25 are provided, and the tie rod fixing seats I25 are welded and fixed to the relatively higher side when the base plate 21 is fixed on the mold table 1.

[0034] Reference Figure 4 The side plate assembly 3 is fixed to the base plate 21 by bolts. The side plate assembly 3 includes a side plate 31, a side plate frame 32, a guardrail forklift groove forming block 33, an end plate guide sleeve II 34, and a tie rod fixing seat II 35. The side plate frame 32 is formed by welding horizontal and vertical bars perpendicularly. The side plate frame 32 is welded and fixed to the outer side wall of the side plate 31 away from the base plate assembly 22. The end plate guide sleeve II 34 is fixedly installed at both ends of the side plate 31 in the length direction. The end plate guide sleeve I 24 on the base plate assembly 22 cooperates with the end plate guide sleeve II 34 of the side plate assembly 3 to realize the guidance of the end plate 41 closing.

[0035] The tie rod fixing seat II 35 is welded and fixed to one side of the side plate 31 along its length, and its position corresponds to that of the tie rod fixing seat I 25, so as to allow the tie rod assembly 6 to be installed.

[0036] Reference Figure 4 and Figure 5 Two guardrail forklift slot forming blocks 33 are provided. The two guardrail forklift slot forming blocks 33 are fixed to the side wall of the side plate 31 away from the side plate frame 32, so that the cast guardrail has forklift slots, which facilitates the subsequent handling and transportation of guardrail prefabricated components.

[0037] Reference Figure 6 and Figure 7The end plate assembly 4 includes an end plate 41, an end plate frame 42, a hinge pin 43, a guide shaft 44, a snap-fit ​​fixing shaft 45, and a mold opening fixing sleeve 46. The end plate frame 42 is welded and fixed to one side wall of the end plate 41. The hinge pin 43 is located at the bottom of the end plate 41, and the end plate assembly is hinged to the base plate assembly 22 through the hinge pin 43. The mold opening fixing sleeve 46 is a hollow square tube and is fixed in the middle of the end plate frame 42. There are two guide shafts 44, which are welded and fixed to the inner side wall of the end plate 41. The two guide shafts 44 cooperate with the end plate guide sleeve I 24 and the end plate guide sleeve II 34, thereby achieving the closed guidance of the end plate 41 through the guide shafts 44. The snap-fit ​​fixing shaft 45 is welded and fixed to both ends of the end plate 41, and cooperates with the snap-fit ​​assembly 5 to fix the end plate 41. The buckle assembly 5 includes a buckle 51, a fixed rotating shaft 52, a buckle compression spring 53, a locking tension spring 54, and a limiting plate 55. The fixed rotating shaft 52 is installed on the outer side wall of the side plate 31 or the bottom plate 21. The limiting plate 55 is fixed to the bottom of the buckle 51. One end of the buckle compression spring 53 and the locking tension spring 54 are connected to the buckle 51, and the other end is connected to the side plate 31 or the bottom plate 21 to provide tension force and ensure stability when the buckle is locked. The buckle 51 rotates around the fixed rotating shaft 52 to achieve locking and disengagement with the buckle fixing shaft 45 on the end plate assembly 4.

[0038] Reference Figure 8 The tie rod assembly 6 includes a threaded rod 61, a pad 62, and a nut 63. The two ends of the threaded rod 61 are respectively inserted into the tie rod fixing seat I 25 and the tie rod fixing seat II 35. By sequentially putting the pad 62 and the nut 63 on the two ends of the threaded rod 61 and tightening the nut 63 to secure it, the side plate 31 and the upper opening of the bottom plate 21 are tightened and locked, effectively preventing product defects caused by deformation of the upper opening during the casting process.

[0039] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A precast concrete guardrail casting mold with openable and closable end plates, characterized in that: The system includes a mold table (1), a base plate assembly (2), a side plate assembly (3), an end plate assembly (4), a snap-fit ​​assembly (5), and a tie rod assembly (6). In use, the mold table (1) is placed on a vibration table. The base plate assembly (2) is fixed on the mold table (1). The side plate assembly (3) is installed on one side of the base plate assembly (2). Two sets of end plate assemblies (4) are provided. The two end plate assemblies (4) are hinged to both ends of the base plate assembly (2) and can be rotated around the hinge point with the base plate assembly (2). The end plate assembly (4) is connected and fixed to the side plate assembly (3) or the base plate assembly (2) through the snap-fit ​​assembly (5). The snap-fit ​​assembly (5) can be used with the mold opening and closing equipment to open quickly. The upper openings of the base plate assembly (2) and the side plate assembly (3) are tightened and locked by the tie rod assembly (6).

2. The precast concrete guardrail casting mold box with openable end plates according to claim 1, characterized in that: The mold platform (1) includes a base frame (11) and a base plate fixing frame (12). The base frame (11) is a square frame formed by welding several channel steels arranged longitudinally and transversely. The base plate fixing frame (12) is welded to the base frame (11) and is used to support and fix the base plate assembly (2). Several sets of base plate fixing frames (12) are arranged in a square along the length of the base frame (11). Each base plate fixing frame (12) is composed of several fixed pillars. The height of the fixed pillars increases along the width direction of the base frame (11) to adapt to the bottom contour of the base plate assembly (2).

3. A precast concrete guardrail casting mold with openable end plates according to claim 2, characterized in that: The base plate assembly (2) includes a base plate (21) and a base plate frame (22); the base plate frame (22) is welded and fixed to the side wall of the base plate (21) near the mold table (1), and the base plate fixing frame (12) is connected to the base plate frame (22); the side plate assembly (3) is fixed to one side of the base plate (21), and the side plate assembly (3) includes a side plate (31) and a side plate frame (32); the side plate frame (32) is welded and fixed to the outer side wall of the side plate (31) away from the base plate assembly (2).

4. A precast concrete guardrail casting mold with openable end plates according to claim 3, characterized in that: The side plate (31) also includes guardrail forklift slot forming blocks (33), and there are two guardrail forklift slot forming blocks (33), which are fixed to the side wall of the side plate (31) away from the side plate frame (32).

5. A precast concrete guardrail casting mold with openable end plates according to claim 4, characterized in that: The end plate assembly (4) includes an end plate (41), an end plate frame (42), a hinge pin (43), a snap-fit ​​fixing pin (45), and a mold opening fixing sleeve (46); The end plate frame (42) is welded and fixed to one side wall of the end plate (41). The hinge pin (43) is set at the bottom of the end plate (41). The end plate (41) is hinged to the base plate assembly (2) through the hinge pin (43). The mold opening fixing sleeve (46) is made of hollow square tube and is fixed in the middle of the end plate frame (42). The buckle fixing shaft (45) is welded and fixed to both ends of the end plate (41) and cooperates with the buckle assembly (5) to fix the end plate (41). The buckle assembly (5) includes a buckle (51), a fixed pivot (52), a buckle spring (53), and a locking tension spring (54). The fixed pivot (52) is installed on the outer side wall of the side plate (31) or the bottom plate (21). One end of the buckle spring (53) and the locking tension spring (54) are connected to the buckle (51), and the other end is connected to the side plate (31) or the bottom plate (21) to provide locking tension. The buckle (51) is rotatably connected to the fixed pivot (52). The buckle (51) rotates around the fixed pivot (52) to achieve clamping and disengagement with the buckle fixed shaft (45).

6. A precast concrete guardrail casting mold with openable end plates according to claim 5, characterized in that: The base plate assembly (2) further includes end plate guide sleeve I (24), which is installed at both ends of the base plate (21) in the length direction; the side plate assembly (3) further includes end plate guide sleeve II (34), which is fixedly installed at both ends of the side plate (31) in the length direction; the end plate (41) is provided with two guide shafts (44), and the end plate guide sleeve I (24) and the end plate guide sleeve II (34) cooperate with the two guide shafts (44) on the end plate (41) to realize the guidance of the end plate (41) closure.

7. A precast concrete guardrail casting mold with openable end plates according to claim 6, characterized in that: The base plate assembly (2) further includes a tie rod fixing seat I (25), which is welded and fixed to the relatively higher side of the base plate (21) when it is installed on the mold table (1); the side plate assembly (3) further includes a tie rod fixing seat II (35), which is welded and fixed to one side of the side plate (31) in the length direction and is opposite to the position of the tie rod fixing seat I (25); The tie rod assembly (6) includes a threaded rod (61), a pad (62), and a nut (63). The two ends of the threaded rod (61) are respectively inserted into the tie rod fixing seat I (25) and the tie rod fixing seat II (35). By sequentially putting the pad (62) and the nut (63) on the two ends of the threaded rod (61) and tightening the nut (63) to abut, the tension and locking of the side plate (31) and the upper opening of the bottom plate (21) are achieved.