Prefabricated box girder core mold anti-floating device

Abstract

The utility model relates to a prefabricated box girder core mold anti-floating device which comprises bases of an I-shaped structure, an outer mold is arranged at the top of each base, a plurality of strip-shaped plates which are arranged front and back at intervals are detachably and fixedly arranged at the top of each outer mold, core molds are arranged in the outer molds, and the bases are arranged at intervals in the length direction of the outer molds. An adjusting rod is arranged on the base, the outer mold, the core mold and the strip-shaped plate in a penetrating mode, a first supporting structure is arranged at the top of the core mold, the top of the first supporting structure is flush with the top of the outer mold, a second supporting structure is arranged at the bottom of the core mold, and the bottom of the second supporting structure abuts against the groove bottom of the outer mold. Through combined use of the adjusting rod, the fastener and the supporting structure, floating of the box girder core mold during concrete pouring is effectively prevented, construction quality and structural stability are ensured, and perpendicularity and levelness of the core mold can be kept easily.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete box beam prefabrication equipment, in particular to an anti-floating device for a core mold of a prefabricated box beam. Background Art

[0002] In the traditional construction process, most beam yards use top pressure bars to fix the core formwork. This construction speed is slow, and the pressure bars need to be reprocessed when the box beam size changes. During the pouring process, the core formwork is subjected to the buoyancy force of the concrete on its bottom surface, causing the core formwork to move upward, resulting in the box beam being too high and the top thickness being insufficient, thus affecting the quality of the beam and slab structure. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a prefabricated box girder core mold anti-floating device to solve the technical problem of the core mold floating during the concrete pouring process.

[0004] In order to achieve the above-mentioned purpose, the utility model is a prefabricated box beam core mold anti-floating device, the technical solution adopted is:

[0005] A prefabricated box girder core mold anti-floating device comprises: a base, an outer mold is provided on the top of the base, the outer mold is a trough plate structure with an upper opening, a plurality of strip plates arranged in a front-to-back interval are detachably fixed on the top of the outer mold, the strip plates extend in the left-right direction, a core mold is provided inside the outer mold, the base is arranged at intervals along the length direction of the outer mold, and a mounting hole is opened on the base 1;

[0006] The outer mold, the core mold, and the strip plate are all provided with reserved holes corresponding to the mounting holes and passing through the upper and lower parts. An adjusting rod is passed through the reserved holes and the mounting holes. The top of the adjusting rod is sleeved with a first fastener, and the first fastener is located between the front and rear adjacent strip plates. The bottom of the adjusting rod is sleeved with a second fastener, and the second fastener is located on the top inner wall of the base. The second fastener is used to fix the bottom of the adjusting rod;

[0007] A first supporting structure is provided at the top of the core mold, the top of the first supporting structure is flush with the top of the outer mold, the bottom of the first fastener rests against the bottom of the first supporting structure, and a second supporting structure is provided at the bottom of the core mold, the bottom of the second supporting structure rests against the bottom of the groove of the outer mold.

[0008] Preferably, the first fastener includes a first pressure plate sleeved on the top of the adjusting rod, the second fastener includes a second pressure plate sleeved on the bottom of the adjusting rod, the adjusting rod is provided with an external thread, a first nut is provided on the top of the first pressure plate, the first nut is sleeved on the adjusting rod, and the first nut is threadedly connected to the adjusting rod, a second nut is provided at the bottom of the second pressure plate, the second nut is sleeved on the adjusting rod, and the second nut is threadedly connected to the adjusting rod.

[0009] Preferably, the first supporting structure includes a first sleeve, which is sleeved on the adjusting rod; the second supporting structure includes a second sleeve, which is sleeved on the adjusting rod, the first sleeve is fixedly connected to the first limiting plate, and the first sleeve and the second sleeve are respectively against the upper and lower sides of the core mold.

[0010] Preferably, a first limit plate is provided at the bottom of the first sleeve, and the first limit plate is sleeved on the adjusting rod. A second limit plate is provided at the top of the second sleeve, and the second limit plate is sleeved on the adjusting rod. The first limit plate and the second limit plate are respectively against the upper and lower sides of the core mold.

[0011] Preferably, internal threaded slots are provided on both the left and right ends of the top of the outer mold, and fixing holes corresponding to the internal threaded slots are provided on both the left and right ends of the strip plate. Fixing bolts are passed through the internal threaded slots and the fixing holes, and the fixing bolts are used to fix the strip plate to the outer mold.

[0012] The beneficial effect is: through the combined use of adjusting rods, fasteners and supporting structures, the floating of the box girder core mold during concrete pouring is effectively prevented, ensuring the construction quality and structural stability. The setting of the first supporting structure and the second supporting structure enables the core mold to be firmly supported between the strip plate and the outer mold, which helps to maintain the verticality and horizontality of the core mold, improves construction efficiency and accuracy, and the setting of the adjusting rod makes the device adjustable, and the height of the core mold can be adjusted as needed to meet the needs of different concrete pouring, thereby improving the flexibility and adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the three-dimensional structure of the device in Example 1;

[0014] Figure 2 for Figure 1 Schematic diagram of the plane structure from the main viewing angle;

[0015] Figure 3 yes Figure 1 Schematic diagram of the structure of the base.

[0016] In the figure: 1-base; 2-outer mold; 3-strip plate; 4-core mold; 5-adjusting rod; 6-first pressure plate; 7-second pressure plate; 8-first nut; 9-second nut; 10-first sleeve; 11-second sleeve; 12-first limit plate; 13-second limit plate. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the anti-floating device of the core mold of a prefabricated box beam of the present invention in conjunction with the accompanying drawings and specific embodiments:

[0018] Example 1: A prefabricated box beam core mold anti-floating device, such as Figure 1-3 As shown, it includes a base 1 with an I-shaped structure. In this embodiment, an outer mold 2 is provided on the top of the base 1, and the outer mold 2 is a groove plate structure with an upper opening.

[0019] Multiple strip plates 3 are removably fixed to the top of the outer mold 2, spaced apart from each other. These strip plates 3 extend horizontally. Specifically, internally threaded slots are defined on both the left and right ends of the top of the outer mold 2. The strip plates 3 also have corresponding fixing holes. Fixing bolts are inserted through these slots and holes to secure the strip plates 3 to the outer mold 2.

[0020] The outer mold 2 is provided with a core mold 4, and the base 1 is arranged at intervals along the length of the outer mold 2. The base 1 is provided with a mounting hole 101. In this embodiment, the mounting hole 101 is a circular hole. The outer mold 2, the core mold 4, and the strip plate 3 are all provided with a reserved hole corresponding to the mounting hole 101 and extending vertically therethrough. The reserved hole and the mounting hole 101 are penetrated by an adjustment rod 5. The top of the adjustment rod 5 is sleeved with a first fastener, which is located between the front and rear adjacent strip plates 3. The bottom of the adjustment rod 5 is sleeved with a second fastener, which is located on the top inner wall of the base 1 and is used to secure the bottom of the adjustment rod 5.

[0021] Specifically, a first nut 8 is provided on the top of the first pressure plate 6, and the first nut 8 is sleeved on the adjusting rod 5. The first nut 8 is threadedly connected to the adjusting rod 5. In this embodiment, the first pressure plate 6 is a circular structure, and the bottom of the adjusting rod 5 is sleeved with a second fastener. The second fastener is located on the top inner wall of the base 1, and the second fastener is used to fix the bottom of the adjusting rod 5. Specifically, the second fastener includes a second pressure plate 7 sleeved on the bottom of the adjusting rod 5. Specifically, a second nut 9 is provided at the bottom of the second pressure plate 7, and the second nut 9 is sleeved on the adjusting rod 5. The second nut 9 is threadedly connected to the adjusting rod 5. In this embodiment, the second pressure plate 7 is a circular structure.

[0022] A first supporting structure is provided at the top of the core mold 4, the top of the first supporting structure is flush with the top of the outer mold 2, the bottom of the first fastener rests against the bottom of the first supporting structure, and a second supporting structure is provided at the bottom of the core mold 4, the bottom of the second supporting structure rests against the bottom of the groove of the outer mold 2.

[0023] Specifically, the first support structure includes a first sleeve 10, which is sleeved on the adjustment rod 5. A first limit plate 12 is provided at the bottom of the first sleeve 10, which is sleeved on the adjustment rod 5. A second limit plate 13 is provided at the top of the second sleeve 11, which is sleeved on the adjustment rod 5. The first limit plate 12 and the second limit plate 13 respectively abut against the upper and lower sides of the core mold 4. In this embodiment, the first sleeve 10 and the second limit plate 12 are welded, and the second sleeve 11 and the second limit plate 13 are also welded.

[0024] Principle of use: When using the anti-floating device for the core mold of a prefabricated box beam of the present invention, first install the base 1, the outer mold 2, and the adjusting rod 5 in sequence, then put the second nut 9 and the second pressure plate 7 on the lower end of the adjusting rod 5, then put the second sleeve 11, the second limiting plate 13, the core mold 4, the first limiting plate 12 and the second sleeve 11 on the adjusting rod 5 in sequence, and finally put the first pressure plate 6 and the first nut 8 on the adjusting rod 5, the first pressure plate 6 rests on the top of the second sleeve 11, tighten the first nut 8, and fix the core mold 4 in the outer mold 2. Casting is carried out into the casting cavity between the outer mold 2 and the core mold 4 through the gap between the front and rear adjacent strip plates 3. After the casting is completed, the first pressure plate 6, the first nut 8, the second nut 9 and the second pressure plate 7 are removed, the adjusting rod 5 is pulled out, and the strip plates 3 are removed for reuse next time.

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A prefabricated box girder core mold anti-floating device, characterized by: The invention comprises a base (1) of an I-shaped structure, an outer mold (2) is provided on the top of the base (1), the outer mold (2) is a slotted plate structure with an upper opening, a plurality of strip plates (3) arranged at intervals in front and behind are detachably fixed on the top of the outer mold (2), the strip plates (3) extend in the left-right direction, a core mold (4) is provided inside the outer mold (2), the base (1) is arranged at intervals along the length direction of the outer mold (2), and a mounting hole (101) is provided on the base (1); The outer mold (2), the core mold (4) and the strip plate (3) are all provided with reserved holes corresponding to the mounting hole (101) and passing through the upper and lower parts. An adjusting rod (5) is passed through the reserved hole and the mounting hole (101). The top of the adjusting rod (5) is sleeved with a first fastener, and the first fastener is located between the front and rear adjacent strip plates (3). The bottom of the adjusting rod (5) is sleeved with a second fastener, and the second fastener is located on the top inner wall of the base (1). The second fastener is used to fix the bottom of the adjusting rod (5); The top of the core mold (4) is provided with a first supporting structure, the top of the first supporting structure is flush with the top of the outer mold (2), the bottom of the first fastener abuts against the bottom of the first supporting structure, and the bottom of the core mold (4) is provided with a second supporting structure, the bottom of the second supporting structure abuts against the bottom of the groove of the outer mold (2).

2. The anti-floating device for the core mold of a prefabricated box beam according to claim 1 is characterized in that: The first fastener comprises a first pressing plate (6) sleeved on the top of the adjusting rod (5), the second fastener comprises a second pressing plate (7) sleeved on the bottom of the adjusting rod (5), the adjusting rod (5) is provided with an external thread, a first nut (8) is provided on the top of the first pressing plate (6), the first nut (8) is sleeved on the adjusting rod (5), and the first nut (8) is threadedly connected to the adjusting rod (5), and a second nut (9) is provided on the bottom of the second pressing plate (7), the second nut (9) is sleeved on the adjusting rod (5), and the second nut (9) is threadedly connected to the adjusting rod (5).

3. The anti-floating device for the core mold of a prefabricated box beam according to claim 1 is characterized in that: The first supporting structure comprises a first sleeve (10), which is sleeved on the adjusting rod (5); the second supporting structure comprises a second sleeve (11), which is sleeved on the adjusting rod (5); the first sleeve (10) is fixedly connected to the first limiting plate (12), and the first sleeve (10) and the second sleeve (11) respectively abut against the upper and lower sides of the core mold (4).

4. The anti-floating device for the core mold of a prefabricated box beam according to claim 3 is characterized in that: A first limiting plate (12) is provided at the bottom of the first sleeve (10), and the first limiting plate (12) is sleeved on the adjusting rod (5). A second limiting plate (13) is provided at the top of the second sleeve (11), and the second limiting plate (13) is sleeved on the adjusting rod (5). The first limiting plate (12) and the second limiting plate (13) respectively abut against the upper and lower sides of the core mold (4).

5. The anti-floating device for the core mold of a prefabricated box beam according to claim 1 is characterized in that: The left and right ends of the top of the outer mold (2) are both provided with internal thread slots, and the left and right ends of the strip plate (3) are both provided with fixing holes corresponding to the internal thread slots. Fixing bolts are passed through the internal thread slots and the fixing holes, and the fixing bolts are used to fix the strip plate (3) on the outer mold (2).

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