Formwork expansion prevention device for outer web of precast beam

Abstract

The utility model relates to the technical field of precast beam construction, in particular to a precast beam outer web formwork expansion prevention device which comprises a formwork expansion prevention device body, an outer formwork support and an end formwork are arranged on the two sides of the formwork expansion prevention device body respectively, and a first telescopic rod and a second telescopic rod which are arranged in a central symmetry mode are arranged on the formwork expansion prevention device body. The two ends of the first telescopic rod and the two ends of the second telescopic rod are jointly connected with a welding positioning plate, a first connecting plate and a second connecting plate are further arranged between the first telescopic rod and the second telescopic rod in a sleeving mode, and an adjusting screw rod penetrates through the position between the first connecting plate and the second connecting plate. The two sides of the first connecting plate and the two sides of the second connecting plate are provided with fastening nuts fastened to the adjusting screw rods respectively. According to the mold expansion prevention device for the outer web of the precast beam, a plurality of strip-shaped tools are arranged between the end mold and the outer mold support, the strip-shaped tools are of telescopic structures, the distance can be adjusted according to needs, the requirements for connection and fastening of the end molds and the outer mold support of different beam sections are met, and mold expansion of the outer web is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated beam construction, in particular to a prefabricated beam outer web plate anti-expansion mold device. Background Art

[0002] Precast beams are mainly used for the manufacture of beams in structures such as bridges and buildings. The concrete mixture is poured into the mold and solidified to form a beam with a specific shape and size. In the prefabrication of segmental beams, the outer web is an integral structure. When the formwork is closed and assembled, the outer web formwork is fastened and supported by the outer formwork support rod. During the concrete pouring process, the side pressure of the concrete and the high-frequency vibrator of the outer web affect the fastening, causing the screw to slip, resulting in the displacement of the outer web formwork, resulting in the larger size of the beam web, thereby affecting the size of the prefabricated segment structure and the qualified rate of the steel bar protective layer.

[0003] In the existing prefabricated beam outer web anti-expansion formwork process, bolt eyes are set between the end mold and the outer mold reinforcement plate to fix the two with a "7"-shaped steel plate to prevent the problem of outer web expansion. However, the lengths of the prefabricated segments are different. When prefabricating different segments, the position of the outer mold needs to be adjusted according to the segment length. The "7"-shaped steel plate bolt eyes cannot meet the needs of different types of beam segments. Utility Model Content

[0004] The purpose of the utility model is to provide a prefabricated beam outer web anti-expansion mold device to solve the problem of the prefabricated beam outer web anti-expansion mold process currently on the market proposed by the above-mentioned background technology, by setting bolt eyes between the end mold and the outer mold reinforcement rib plate, fixing the two "7"-shaped steel plates to prevent the outer web mold from expanding, but the lengths of the prefabricated segments are different. When prefabricating different segments, the position of the outer mold needs to be adjusted according to the segment length, and the "7"-shaped steel plate bolt eyes cannot meet the needs of different types of beam segments.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated beam outer web anti-expansion mold device, including an anti-expansion mold device body, outer mold brackets and end molds are respectively provided on both sides of the anti-expansion mold device body, and side molds are assembled on the side of the end mold, and a first telescopic rod and a second telescopic rod are centrally symmetrically arranged on the anti-expansion mold device body, and the first telescopic rod and the second telescopic rod are commonly connected with a welded positioning plate at both ends, and a first connecting plate and a second connecting plate are respectively sleeved between the first telescopic rod and the second telescopic rod, and an adjusting screw is passed through the first connecting plate and the second connecting plate, and fastening nuts fastened to the adjusting screw are respectively provided on both sides of the first connecting plate and the second connecting plate.

[0006] Preferably, the welding positioning plate is an L-shaped structure, and the welding positioning plate is respectively clamped with the outer mold bracket and the end mold and then welded and fixed.

[0007] Preferably, the welding positioning plates are symmetrically arranged, and the welding positioning plates are respectively welded and fixed to both ends of the first telescopic rod and the second telescopic rod.

[0008] Preferably, the first connecting plate and the second connecting plate are square steel plate structures of the same size.

[0009] Preferably, the first connecting plate and the second connecting plate are arranged vertically and parallel to each other.

[0010] Preferably, the first connecting plate and the second connecting plate are respectively penetrated through the first telescopic rod and the second telescopic rod and then fixed by welding.

[0011] Preferably, groove structures are provided on both sides of the first connecting plate and the second connecting plate at locations where the adjusting screw passes through.

[0012] Preferably, the fastening nuts are located in grooves on both sides of the first connecting plate and the second connecting plate.

[0013] Preferably, the first telescopic rod and the second telescopic rod are both square tube structures.

[0014] Preferably, the movable parts of the first telescopic rod and the second telescopic rod are arranged between the first connecting plate and the second connecting plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the precast beam outer web anti-expansion mold device is provided with multiple strip tooling between the end mold and the outer mold support, and the strip tooling is a telescopic structure, and the spacing can be adjusted as needed to meet the connection and fastening of the end molds of different beam sections and the outer mold support, thereby preventing the outer web from expanding. The precast beam outer web anti-expansion mold device is welded and positioned by an L-shaped welding positioning plate, and the two ends of the telescopic structure of the strip tooling are respectively welded to the welding positioning plate, and the length of the strip tooling is adjusted by welding and fixing the welding positioning plate to the end mold and the outer mold support respectively, and the strip tooling is locked after the length adjustment by screws and bolts, completing the connection and fastening process between the end mold and the outer mold support. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the connection structure of the main body of the anti-expansion mold device for the outer web of a prefabricated beam, the outer mold support and the end mold of the utility model;

[0017] Figure 2 The utility model is a prefabricated beam outer web plate anti-expansion mold device Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 3 This is a schematic diagram of the main structure of a prefabricated beam outer web anti-expansion mold device from a top view according to the utility model;

[0019] Figure 4The utility model is a schematic diagram of the connection structure of the first connecting plate, the first telescopic rod and the second telescopic rod of the anti-expansion mold device of the outer web of the precast beam.

[0020] In the figure: 1. outer mold bracket; 2. end mold; 3. side mold; 4. anti-expansion mold device body; 5. welding positioning plate; 6. first connecting plate; 7. adjusting screw; 8. second connecting plate; 9. first telescopic rod; 10. second telescopic rod; 11. fastening nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4The utility model provides a technical solution: a prefabricated beam outer web anti-expansion mold device, including an anti-expansion mold device body 4, an outer mold support 1 and an end mold 2 are respectively provided on both sides of the anti-expansion mold device body 4, and the side of the end mold 2 is provided with a side mold 3 by assembly, and the anti-expansion mold device body 4 is provided with a first telescopic rod 9 and a second telescopic rod 10 that are centrally symmetrically arranged. The first telescopic rod 9 and the second telescopic rod 10 are both square tube structures. This structure avoids the influence of rotation when the first telescopic rod 9 and the second telescopic rod 10 are telescopically adjusted through the square tube structure, and at the same time ensures the position accuracy of the first telescopic rod 9 and the second telescopic rod 10 penetrating the first connecting plate 6 and the second connecting plate 8, and the first telescopic rod 9 and the second telescopic rod 10 are commonly connected with a welding positioning plate 5 at both ends. The welding positioning plate 5 is an L-shaped structure, and the welding positioning plate 5 is respectively connected with the outer mold support 1 and the end mold 2 and then welded and fixed. This structure allows the main body 4 of the anti-expansion mold device to be welded and positioned with the outer mold support 1 and the end mold 2 through the welding positioning plate 5, ensuring the welding accuracy of the welding positioning plate 5, so that the outer mold support 1 and the end mold 2 are connected and fastened through the main body 4 of the anti-expansion mold device. The welding positioning plates 5 are symmetrically arranged, and the welding positioning plates 5 are respectively welded and fixed to the two ends of the first telescopic rod 9 and the second telescopic rod 10. This structure makes the two ends of the first telescopic rod 9 and the second telescopic rod 10 respectively fixed between the welding positioning plates 5, and the spacing between the welding positioning plates 5 is adjusted by fixing the first telescopic rod 9 and the second telescopic rod 10, so that The welding positioning plate 5 is adjusted accordingly according to the actual spacing between the outer mold support 1 and the end mold 2, which reduces the time for measuring the spacing between the outer mold support 1 and the end mold 2, and improves the convenience of installing the main body 4 of the anti-expansion mold device. The first connecting plate 6 and the second connecting plate 8 are respectively sleeved between the first telescopic rod 9 and the second telescopic rod 10. The first connecting plate 6 and the second connecting plate 8 are square steel plate structures of the same size. This structure uses the steel plate structure of the first connecting plate 6 and the second connecting plate 8 to make the first connecting plate 6 and the second connecting plate 8 relatively firmly connected through the adjusting screw 7. The first connecting plate 6 and the second connecting plate 8 are vertically parallel to each other. This structure can make the spacing between the first connecting plate 6 and the second connecting plate 8 adjust with the adjustment of the welding positioning plate 5 The first connecting plate 6 and the second connecting plate 8 are respectively penetrated with the first telescopic rod 9 and the second telescopic rod 10 and then welded and fixed. This structure can ensure the connection stability of the first connecting plate 6 and the second connecting plate 8 relative to the first telescopic rod 9 and the second telescopic rod 10 on both sides of the movable parts, so that when the first telescopic rod 9 and the second telescopic rod 10 are adjusted in length, the spacing between the first connecting plate 6 and the second connecting plate 8 can be adjusted. Since the first telescopic rod 9 and the second telescopic rod 10 are centrally symmetrical structures, the movable parts of the first telescopic rod 9 and the second telescopic rod 10 are staggered, which increases the overall stability of the main body 4 of the anti-expansion mold device. The first connecting plate 6 and the second connecting plate 8 are both provided with groove structures at the parts where the adjusting screw 7 passes through.This structure enables the first connecting plate 6 and the second connecting plate 8 to be fixed with the rubber gasket matched with the fastening nut 11 through the grooves on both sides, and an adjusting screw 7 is passed through the first connecting plate 6 and the second connecting plate 8, and the movable parts of the first telescopic rod 9 and the second telescopic rod 10 are arranged between the first connecting plate 6 and the second connecting plate 8. This structure enables the first connecting plate 6 and the second connecting plate 8 to adjust the spacing when the first telescopic rod 9 and the second telescopic rod 10 are adjusted, thereby realizing the fixation of the main body 4 of the anti-expansion mold device between the outer mold bracket 1 and the end mold 2, and the first connecting The connecting plate 6 and the second connecting plate 8 are respectively provided with fastening nuts 11 fastened with the adjusting screw 7, and the fastening nuts 11 are located in the grooves on both sides of the first connecting plate 6 and the second connecting plate 8. This structure allows the fastening nuts 11 to be more firmly fixed relative to the first connecting plate 6 and the second connecting plate 8 through the grooves on both sides of the first connecting plate 6 and the second connecting plate 8. After the end mold 2 and the outer mold bracket 1 are connected and fastened by the main body 4 of the anti-expansion mold device, the inconvenience of position adjustment caused by the traditional "7"-shaped steel plate fixing the end mold 2 and the outer mold reinforcement plate can be avoided, and the requirements of different types of beam sections cannot be met.

[0023] Working principle: When using the prefabricated beam outer web anti-expansion mold device, first, during the prefabrication of the segmental beam, the side mold 3 and the end mold 2 are closed and assembled, and the end mold 2 is supported and stabilized by the outer mold bracket 1. The main body 4 of the anti-expansion mold device connects and fastens the end mold 2 and the outer mold bracket 1 to prevent the outer web from expanding. The main body 4 of the anti-expansion mold device is clamped and positioned relative to the outer mold bracket 1 and the end mold 2 through the L-shaped welding positioning plate 5, and the welding positioning plate 5 is welded and fixed to the outer mold bracket 1 and the end mold 2 respectively. The first telescopic rod 9 and the second telescopic rod 10 arranged between the welding positioning plates 5 change in length as the welding positioning plates 5 are welded, and the spacing between the first connecting plate 6 and the second connecting plate 8 is changed at the same time. By adjusting the positions of the fastening nuts 11 on both sides of the first connecting plate 6 and the second connecting plate 8 on the adjusting screw 7, the relative position between the first connecting plate 6 and the second connecting plate 8 is stabilized, so that the end mold 2 and the outer mold bracket 1 are connected and fastened, thereby completing a series of work.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A precast beam outer web anti-expansion mold device, comprising an anti-expansion mold device body (4), characterized in that: The main body (4) of the anti-expansion mold device is provided with an outer mold support (1) and an end mold (2) on both sides, and the side of the end mold (2) is provided with a side mold (3) by assembly. The main body (4) of the anti-expansion mold device is provided with a first telescopic rod (9) and a second telescopic rod (10) which are centrally symmetrically arranged, and the two ends of the first telescopic rod (9) and the second telescopic rod (10) are commonly connected with a welding positioning plate (5), and the first telescopic rod (9) and the second telescopic rod (10) are respectively sleeved with a first connecting plate (6) and a second connecting plate (8), and an adjusting screw (7) passes through the first connecting plate (6) and the second connecting plate (8), and the first connecting plate (6) and the second connecting plate (8) are respectively provided with fastening nuts (11) fastened to the adjusting screw (7) on both sides.

2. The device for preventing the outer web of a precast beam from expanding as claimed in claim 1, characterized in that: The welding positioning plate (5) is an L-shaped structure, and the welding positioning plate (5) is respectively clamped with the outer mold support (1) and the end mold (2) and then welded and fixed.

3. The device for preventing the outer web of a precast beam from expanding as claimed in claim 1 is characterized in that: The welding positioning plates (5) are symmetrically arranged, and the welding positioning plates (5) are respectively welded and fixed to the two ends of the first telescopic rod (9) and the second telescopic rod (10).

4. The device for preventing the outer web of a precast beam from expanding as claimed in claim 1, characterized in that: The first connecting plate (6) and the second connecting plate (8) are square steel plate structures of the same size.

5. The device for preventing mold expansion of outer web of precast beam according to claim 1, characterized in that: The first connecting plate (6) and the second connecting plate (8) are arranged vertically and in parallel.

6. The device for preventing the outer web of a precast beam from expanding as claimed in claim 1, characterized in that: The first connecting plate (6) and the second connecting plate (8) respectively penetrate the first telescopic rod (9) and the second telescopic rod (10) and are then fixed by welding.

7. The device for preventing the outer web of a precast beam from expanding as claimed in claim 1, characterized in that: Groove structures are provided on both sides of the first connecting plate (6) and the second connecting plate (8) at locations where the adjusting screw rod (7) passes through.

8. The device for preventing the outer web of a precast beam from expanding as claimed in claim 7, characterized in that: The fastening nuts (11) are located at the grooves on both sides of the first connecting plate (6) and the second connecting plate (8).

9. The device for preventing the outer web of a precast beam from expanding as claimed in claim 1, characterized in that: The first telescopic rod (9) and the second telescopic rod (10) are both square tube structures.

10. The device for preventing the outer web of a precast beam from expanding as claimed in claim 1, characterized in that: The movable parts of the first telescopic rod (9) and the second telescopic rod (10) are arranged between the first connecting plate (6) and the second connecting plate (8).

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