Blocking device between high-grade concrete and low-grade concrete at beam-column joint

Abstract

The utility model provides a blocking device between high-grade concrete and low-grade concrete at a beam-column joint, relates to the technical field of beam-column joint pouring, and solves the problem that when a top beam of a beam column is subjected to joint pouring, due to the fact that an existing blocking piece is large in attaching friction after concrete is initially set, the top beam is not prone to falling off. And the barrier piece and the concrete are easy to damage. A pouring cavity is formed in the top of the supporting column, a connecting rod is connected to the middle of the pouring cavity, a blocking rod is arranged at the bottom of the connecting rod, an air bag is arranged on the side wall of the blocking rod, and an air injection hole is formed in the blocking rod and communicates with the air bag. The multiple connecting rods transversely arranged side by side in the device can inflate and expand the air bags, the air bags are attached and extruded to form a barrier layer without gaps, so that the pouring cavity is blocked in a segmented mode, and meanwhile the air bags can be shrunk to be conveniently taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of beam-column node casting, in particular to a barrier device between high-grade and low-grade concrete at a beam-column node. Background Art

[0002] Beam-column node casting refers to the casting of the top beam on the column. Because the concrete used in the parts of the top beam close to the column and far away from the column are of different grades, nodes are distinguished to cast concrete of different grades.

[0003] However, the existing barriers are all hard blocks, so when the concrete needs to be removed after initial setting, friction will make it difficult to remove them, and it is also easy to damage the barriers or the initial setting concrete. In addition, the existing barriers are not very versatile due to their fixed size. Utility Model Content

[0004] The utility model aims to provide a barrier device between high and low grade concrete at the joint of beam and column, so as to solve the problem that when the top beam of the beam and column is cast at the joint, the existing barrier parts are difficult to remove and easily damage the barrier parts and concrete due to the large friction of the adhesion after the initial setting of the concrete.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] The utility model provides a barrier device between high-grade and low-grade concrete at a beam-column node, comprising a support column, a casting cavity is arranged on the top of the support column, a connecting rod is connected to the middle of the casting cavity, a barrier rod is arranged on the bottom of the connecting rod, an air bag is arranged on the side wall of the barrier rod, an air injection hole is arranged inside the barrier rod, and the air injection hole is connected to the air bag;

[0007] The barrier rod also includes a thread groove, a contraction groove and an embedded base, the thread groove is a thread groove mark near the top side wall of the barrier rod, the contraction groove is arranged on the middle side wall of the barrier rod, and the embedded base is arranged at the bottom of the barrier rod;

[0008] The thread groove is a thread that matches the inner wall of the connecting hole on the casting cavity near the top of the blocking rod;

[0009] The shrinkage groove is a groove formed in a circular ring on the side wall of the middle part of the barrier rod, and the airbag is arranged in the shrinkage groove.

[0010] Preferably, a plurality of connecting rods are arranged in parallel transversely in the casting cavity.

[0011] Preferably, the casting cavity further includes an embedding groove, and the embedding groove is arranged at the inner bottom of the casting cavity.

[0012] Preferably, the engaging groove is a groove that cooperates with the engaging base.

[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0014] 1. Through the several connecting rods arranged side by side in the device, the airbags can be inflated to make the airbags fit and squeeze each other to form a barrier layer without gaps, so as to block the casting cavity in sections. At the same time, the airbags can be contracted for easy removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 3 It is a schematic diagram of the side cross-sectional structure of the connecting rod of the utility model;

[0019] Icons: pillar 1, casting cavity 2, interlocking groove 201, connecting rod 3, blocking rod 301, threaded groove 302, shrinkage groove 303, air bag 304, air injection hole 305, interlocking base 306. DETAILED DESCRIPTION

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Combine the following Figures 1 to 3 The utility model is described in detail.

[0022] A barrier device between high and low grade concrete at a beam-column joint comprises a pillar 1, a casting cavity 2 is arranged on the top of the pillar 1, a connecting rod 3 is connected to the middle of the casting cavity 2, a barrier rod 301 is arranged on the bottom of the connecting rod 3, an air bag 304 is arranged on the side wall of the barrier rod 301, an air injection hole 305 is arranged inside the barrier rod 301, and the air injection hole 305 is connected to the air bag 304.

[0023] First, when it is necessary to pour the concrete layer on the top of the pillar 1, it is necessary to build a mold for the pouring cavity 2, and then pour concrete inward. The concrete required for the part of the top beam close to the column is different from the concrete grade of the part far away from the column. Therefore, when pouring, the connecting rods 3 will be arranged side by side inside the pouring cavity 2, and then high-pressure airflow will be injected through the air injection hole 305 to fill the airbag 304, so that the airbag 304 will expand, and the several connecting rods 3 arranged side by side will be pressed against each other due to the expansion of the airbag 304, thereby deforming to form a barrier layer, thereby blocking the pouring cavity 2, and then after the concrete is initially solidified, the airbag 304 will be deflated to shrink it for easy removal of the connecting rod 3.

[0024] Furthermore, the blocking rod 301 also includes a thread groove 302, a shrinkage groove 303 and an interlocking base 306. The thread groove 302 is a thread groove mark on the side wall near the top of the blocking rod 301, the shrinkage groove 303 is arranged on the middle side wall of the blocking rod 301, and the interlocking base 306 is arranged at the bottom of the blocking rod 301. The thread groove 302 is a thread matching the inner wall of the connecting hole on the casting cavity 2 near the top of the blocking rod 301, the shrinkage groove 303 is a groove in a circular ring on the middle side wall of the blocking rod 301, and the airbag 304 is arranged in the shrinkage groove 303. The connecting rod 3 is arranged in parallel in a horizontal manner in the casting cavity 2. The casting cavity 2 also includes an interlocking groove 201, which is arranged at the inner bottom of the casting cavity 2, and the interlocking groove 201 is a groove matching the interlocking base 306.

[0025] At the same time, the airbag 304 is connected to the shrinkage groove 303 on the blocking rod 301. The groove of the shrinkage groove 303 allows the airbag 304 to have space to shrink into the shrinkage groove 303 after being deflated, so that when the connecting rod 3 is taken out, the airbag 304 on the surface of the blocking rod 301 will not protrude from the surface and affect the removal of the blocking rod 301 along the hole. At the same time, when the blocking rod 301 is inserted through the hole on the casting cavity 2, the threaded groove 302 near the top will match and connect with the connecting hole on the casting cavity 2, so that the connection of the blocking rod 301 is more stable and will not easily rise or fall by itself.

[0026] Finally, when the blocking rod 301 is embedded in the casting cavity 2, the embedding base 306 at the bottom thereof will be embedded in the embedding groove 201, so that the blocking rod 301 will not shake or deflect when impacted by concrete.

[0027] The following is a specific implementation process of the utility model. First, when it is necessary to pour the concrete layer on the top of the pillar 1, it is necessary to build a mold for the pouring cavity 2, and then pour concrete inwardly. The concrete required for the part of the top beam close to the column is different from the concrete grade of the part far away from the column. Therefore, when pouring, the connecting rods 3 are arranged side by side inside the pouring cavity 2, and then high-pressure airflow is injected into the air bag 304 through the air injection hole 305, so that the air bag 304 will expand, and the several connecting rods 3 arranged side by side will be pressed against each other due to the expansion of the air bag 304, thereby deforming to form a barrier layer, thereby blocking the pouring cavity 2, and then After the initial setting of the concrete, the airbag 304 is deflated to shrink it, making it easier to take out the connecting rod 3. At the same time, the airbag 304 is connected to the shrinkage groove 303 on the blocking rod 301. The groove of the shrinkage groove 303 allows the airbag 304 to have space to shrink into the shrinkage groove 303 after being deflated, so that when the connecting rod 3 is taken out, the airbag 304 on the surface of the blocking rod 301 will not protrude from the surface and affect the removal of the blocking rod 301 along the hole. At the same time, when the blocking rod 301 is fitted into the hole on the casting cavity 2, the threaded groove 302 near the top will match and connect with the connecting hole on the casting cavity 2, making the connection of the blocking rod 301 more stable and not easily rising or falling by itself.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A barrier device between high-grade and low-grade concrete at a beam-column joint, comprising a support (1), wherein a casting cavity (2) is provided at the top of the support (1), characterized in that: A connecting rod (3) is connected to the middle of the casting cavity (2); a blocking rod (301) is provided at the bottom of the connecting rod (3); an air bag (304) is provided on the side wall of the blocking rod (301); an air injection hole (305) is provided inside the blocking rod (301); and the air injection hole (305) is communicated with the air bag (304); The barrier rod (301) further comprises a thread groove (302), a contraction groove (303) and an engaging base (306), wherein the thread groove (302) is a thread groove mark on the barrier rod (301) near the top side wall, the contraction groove (303) is arranged on the middle side wall of the barrier rod (301), and the engaging base (306) is arranged on the bottom of the barrier rod (301); The thread groove (302) is a thread that matches the inner wall of the connecting hole on the casting cavity (2) near the top of the blocking rod (301); The shrinkage groove (303) is a groove in the form of a circular ring on the middle side wall of the barrier rod (301), and the airbag (304) is arranged in the shrinkage groove (303).

2. A barrier device between high-grade and low-grade concrete at a beam-column joint according to claim 1, characterized in that: The connecting rods (3) are multiple and are arranged in parallel in the casting cavity (2).

3. The barrier device between high-grade and low-grade concrete at the beam-column joint according to claim 1, characterized in that: The casting cavity (2) further comprises an embedding groove (201), wherein the embedding groove (201) is arranged at the inner bottom of the casting cavity (2).

4. The barrier device between high-grade and low-grade concrete at the beam-column joint according to claim 3, characterized in that: The engaging groove (201) is a groove that matches the engaging base (306).

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