Precast hollow wall panel casting core sealing structure

Abstract

This utility model relates to the technical field of prefabricated building construction, and in particular to a sealing structure for the bottom of a precast hollow wall panel. It includes two mounting grooves located on the bottom surface of the wall panel and extending along its length. The two mounting grooves are symmetrically arranged on both sides of the wall panel's centerline. An internal sealing strip is installed within each mounting groove. A clamp is installed on the bottom sidewall of the wall panel, extending along its length. An external sealing strip is installed between the bottom of the clamp and the wall panel. This utility model embodiment employs a combination of internal and external sealing strips. The internal sealing strip acts as the first line of defense against concrete slurry, while the external sealing strip acts as the second line of defense, effectively sealing the gaps and preventing further concrete slurry leakage. This sealing structure is easy to install, provides significant sealing performance, and effectively improves the sealing performance of the wall panel's bottom and overall construction efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of prefabricated building construction, and in particular to a sealing structure for the casting section of a prefabricated hollow wall panel. Background Technology

[0002] Precast hollow wall panels are a type of non-load-bearing or semi-load-bearing wall component widely used in prefabricated buildings, offering advantages such as lightweight, energy efficiency, and quick construction. After installation, concrete needs to be poured into the internal holes of the precast hollow wall panels. During pouring, grout leakage may occur at the base of the wall panels, thus affecting the construction quality. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the present invention provides a sealing structure for the casting section of a precast hollow wall panel.

[0004] The present invention provides a sealing structure for the casting section of a precast hollow wall panel, which adopts the following technical solution: A sealing structure for the casting section of a precast hollow wall panel includes two mounting grooves located on the bottom surface of the wall panel and extending along the length of the wall panel. The two mounting grooves are symmetrically arranged on both sides of the center line of the wall panel. An internal sealing strip is installed in the mounting groove. A clamp is installed on the bottom side wall of the wall panel, extending along the length of the wall panel. An external sealing strip is installed between the bottom of the clamp and the wall panel.

[0005] By adopting the above technical solution, the sealing structure of this utility model embodiment uses an internal sealing strip and an external sealing strip in combination. The internal sealing strip serves as the first line of defense against concrete slurry, and the external sealing strip serves as the second line of defense, thus sealing the gap again and blocking the concrete slurry. This sealing structure is easy to install, has significant sealing performance, and effectively improves the sealing performance of the bottom of the wall panel and the overall construction efficiency.

[0006] Preferably, the internal sealing strip includes two protruding edges arranged in a figure-eight shape, with the bottom end of the protruding edges adhering to the ground.

[0007] By adopting the above technical solution, the internal sealing strip uses a figure-eight shaped overhang to block the flow of concrete slurry from both the left and right sides.

[0008] Preferably, an inverted U-shaped mounting shell is installed in the mounting groove, and the internal sealing strip also includes a mounting part inserted and fixed in the mounting shell, with the protruding edge fixed to the bottom of the mounting part.

[0009] By adopting the above technical solution, the mounting shell cooperates with the internal sealing strip to achieve the installation and positioning of the internal sealing strip.

[0010] Preferably, a protruding retaining strip is fixedly connected to the side wall of the mounting part, and an inwardly recessed retaining groove is provided on the inner wall of the mounting shell, with the retaining strip being engaged and fixed in the retaining groove.

[0011] By adopting the above technical solution, the locking strip and the locking groove cooperate, which improves the stability of the internal sealing strip after installation.

[0012] Preferably, the external sealing strip includes a strip portion that is fitted and installed on the clamping plate. The strip portion extends along the length of the clamping plate, and a plug portion is fixedly connected to the bottom edge of the strip portion near the wall panel. The plug portion extends along the length of the clamping plate, and the cross-section of the plug portion is a right-angled triangle.

[0013] By adopting the above technical solution, the plug strip section forms a right-angled triangle to effectively seal the bottom of the wall panel.

[0014] Preferably, a conical clip head is fixed to the side of the strip near the clamping plate, and a through hole is provided on the clamping plate, through which the clip head passes.

[0015] By adopting the above technical solution, it is easy to install and fix the external sealing strip to the clamp through the card head.

[0016] Preferably, an embedded plate is pre-embedded on the bottom sidewall of the wall panel, and the clamping plate is fixed to the embedded plate by fixing bolts.

[0017] By adopting the above technical solution, it is easy to fix the clamping plate to the embedded plate by fixing bolts.

[0018] Preferably, a vertical support rib is fixedly connected to the side of the plywood away from the wall panel, and a horizontal support rib is fixedly connected to the left and right sides of the bottom of the vertical support rib, with the horizontal support rib resting on the ground.

[0019] By adopting the above technical solution, the vertical and horizontal bracing ribs provide stable support for the wall panel, and the vertical and horizontal bracing ribs can be cast into the ground surface layer later. Attached Figure Description

[0020] Figure 1 This is a front view of the prefabricated hollow wall panel after installation according to an embodiment of this utility model.

[0021] Figure 2 yes Figure 1 Sectional view along the AA direction.

[0022] Figure 3 yes Figure 1 Enlarged diagram of part B.

[0023] Figure 4 yes Figure 2 An enlarged schematic diagram of section C.

[0024] Explanation of reference numerals in the attached drawings: 1. Wall panel; 10. Mounting groove; 2. Positioning rib; 3. Embedded plate; 4. Clamping plate; 40. Through hole; 5. External sealing strip; 50. Strip plate part; 51. Plug strip part; 52. Clip head; 6. Fixing bolt; 7. Vertical support rib plate; 70. Horizontal support rib plate; 8. Internal sealing strip; 80. Mounting part; 81. Cantilevered edge part; 82. Clip strip part; 9. Mounting shell; 90. Clip groove. Detailed Implementation

[0025] The following combination Figures 1-4 The present invention will be further described in detail below. An embodiment of the present invention discloses a sealing structure for the casting section of a precast hollow wall panel.

[0026] Reference Figures 1-4 The precast hollow wall panel casting section sealing structure includes two rectangular installation grooves 10 set along the length of the wall panel 1 on the bottom surface of the wall panel 1. The two installation grooves 10 are symmetrically set on both sides of the center line of the wall panel 1. Multiple vertical positioning ribs 2 are pre-embedded on the ground. The wall panel 1 is inserted into the positioning ribs 2 during installation. The inner hole of the wall panel 1 is used for pouring concrete.

[0027] Embedded plates 3 are pre-embedded on the left and right sides of the bottom of wall panel 1. The embedded plates 3 are steel plates, vertically arranged with one side exposed. A clamping plate 4 extending along the length of wall panel 1 is arranged parallel to the outside of the embedded plate 3. The clamping plate 4 is also steel plate, and multiple through holes 40 are opened along the length of the clamping plate 4. An external sealing strip 5 is installed on the bottom of the clamping plate 4 near the embedded plate 3. The external sealing strip 5 is a rubber strip and is arranged along the length of the clamping plate 4. The external sealing strip 5 includes a rectangular strip portion 50. A plugging strip portion 51 is fixedly connected to the bottom edge of the strip portion 50 near the wall panel 1. The plugging strip portion 51 extends along the length of the strip portion 50 and has a right-angled triangular cross-section, used to seal the gaps at the bottom of wall panel 1.

[0028] Multiple conical clip heads 52 are fixed to the side of the strip 50 near the clamping plate 4. The clip heads 52 pass through the through hole 40, thereby connecting the outer sealing strip 5 to the clamping plate 4. The clamping plate 4 is connected to the embedded plate 3 by fixing bolts 6. Tightening the fixing bolts 6 compresses the plug strip 51 to tightly fill the gap at the bottom of the wall panel 1. In order to improve the support effect on the wall panel 1, multiple vertically arranged vertical support ribs 7 are also evenly fixed to the outer side of the clamping plate 4 along the length direction. Horizontal support ribs 70 are vertically fixed to the left and right sides of the vertical support ribs 7, respectively. The horizontal support ribs 70 are supported on the ground. Both the vertical support ribs 7 and the horizontal support ribs 70 are steel plates.

[0029] An internal sealing strip 8 and a mounting shell 9 are installed inside the mounting groove 10. The mounting shell 9 is long and made of rigid PVC material. The cross-section of the mounting shell 9 is U-shaped and the opening faces downward. The mounting shell 9 is tightly inserted and fixed to the inner top of the mounting groove 10. The internal sealing strip 8 is a rubber strip. The internal sealing strip 8 includes a mounting part 80 inserted and fixed inside the mounting shell 9. The bottom of the mounting part 80 is integrally formed with two protruding edges 81 arranged in a V-shape. After the bottom of the protruding edges 81 is squeezed, they fit against the ground to block the gap at the bottom of the wall panel 1.

[0030] To improve the stability of the mounting part 80 after installation, the left and right side walls of the mounting part 80 are integrally formed with outward protruding retaining strips 82. The retaining strips 82 extend along the length of the mounting part 80 and have a semi-circular cross-section. Correspondingly, the inner wall of the mounting shell 9 is provided with an inwardly recessed retaining groove 90. The retaining groove 90 is adapted to the retaining strips 82, and the retaining strips 82 are fixed in the retaining groove 90.

[0031] The implementation principle of the precast hollow wall panel casting bottom sealing structure of this utility model embodiment is as follows: Before hoisting the wall panel 1, the mounting shell 9 and the internal sealing strip 8 are first installed into the mounting groove 10. Then, the wall panel 1 is hoisted and lowered. After the wall panel 1 is placed, the two cantilevered parts 81 on each internal sealing strip 8 unfold in opposite directions and fit against the ground to improve the sealing performance. Then, the external sealing strip 5 is installed onto the clamping plate 4 through the clip head 52. The clamping plate 4 is installed onto the embedded plate 3 through the fixing bolt 6. Tightening the fixing bolt 6 will make the plug part 51 tightly fill the bottom gap of the wall panel 1. Finally, concrete is poured, and vertical support ribs 7 and horizontal support ribs 70 are welded as needed.

[0032] The sealing structure of this utility model embodiment uses an internal sealing strip 8 and an external sealing strip 5 in combination. The internal sealing strip 8 has a V-shaped overhang 81, which blocks the flow of concrete slurry from both the left and right sides. The external sealing strip 5 has a plug 51 as a second line of defense, which can seal the gap again and block the concrete slurry. This sealing structure is easy to install, has significant sealing performance, and effectively improves the sealing performance of the bottom of the wall panel 1 and the overall construction efficiency.

[0033] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sealing structure for the casting section of a precast hollow wall panel, characterized in that: It includes two mounting grooves (10) set on the bottom surface of the wall panel (1) and extending along the length of the wall panel (1). The two mounting grooves (10) are symmetrically arranged on both sides of the center line of the wall panel (1). An internal sealing strip (8) is installed in the mounting groove (10). A clamping plate (4) is installed on the bottom side wall of the wall panel (1). The clamping plate (4) extends along the length of the wall panel (1). An external sealing strip (5) is installed between the bottom of the clamping plate (4) and the wall panel (1).

2. The sealing structure for the precast hollow wall panel casting section according to claim 1, characterized in that: The internal sealing strip (8) includes two protruding edges (81) arranged in a figure-eight shape, with the bottom of the protruding edges (81) in contact with the ground.

3. The sealing structure for the precast hollow wall panel casting section according to claim 2, characterized in that: The mounting slot (10) is fitted with an inverted U-shaped mounting shell (9). The internal sealing strip (8) also includes a mounting part (80) inserted and fixed inside the mounting shell (9), and the protruding edge (81) is fixed to the bottom of the mounting part (80).

4. The sealing structure for the precast hollow wall panel casting section according to claim 3, characterized in that: The mounting part (80) has an outwardly protruding retaining strip (82) fixedly attached to the side wall, and the mounting shell (9) has an inwardly recessed retaining groove (90) on the inner wall, and the retaining strip (82) is fixedly engaged in the retaining groove (90).

5. The sealing structure for the precast hollow wall panel casting section according to any one of claims 1-4, characterized in that: The external sealing strip (5) includes a strip portion (50) that is fitted and installed on the clamp (4). The strip portion (50) extends along the length of the clamp (4). A plug portion (51) is fixed to the bottom edge of the strip portion (50) near the wall panel (1). The plug portion (51) extends along the length of the clamp (4). The cross-section of the plug portion (51) is a right triangle.

6. The sealing structure for the precast hollow wall panel casting section according to claim 5, characterized in that: A conical head (52) is fixed to the side of the strip (50) near the clamp (4). A through hole (40) is provided on the clamp (4), and the head (52) passes through the through hole (40).

7. The sealing structure for the precast hollow wall panel casting section according to claim 5, characterized in that: An embedded plate (3) is pre-embedded on the bottom side wall of the wall panel (1), and the clamp (4) is fixed to the embedded plate (3) by fixing bolts (6).

8. The sealing structure for the precast hollow wall panel casting section according to claim 5, characterized in that: A vertical support rib (7) is vertically fixed to the side of the plywood (4) away from the wall panel (1). A horizontal support rib (70) is vertically fixed to the left and right sides of the bottom of the vertical support rib (7). The horizontal support rib (70) is supported on the ground.

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