Forming mold for assembly type concrete prefabricated cavity composite column

Abstract

The utility model discloses a forming mould for an assembly type concrete prefabricated cavity composite column, which comprises a mould table, an outer mould plate, an inner mould plate and an auxiliary demoulding structure, the outer mould plate is arranged on the mould table, the inner mould plate is arranged on the inner side of the outer mould plate, a pouring cavity for pouring concrete is formed between the inner mould plate and the outer mould plate, and the auxiliary demoulding structure is arranged on the mould table. The inner side of the inner formwork is used for placing a reinforcement cage, the reinforcement cage comprises a plurality of longitudinal bars and a plurality of stirrups, the stirrups are sequentially arranged at intervals in the depth direction of the pouring cavity, the stirrups are connected with the longitudinal bars, and each stirrup is provided with the corresponding auxiliary demolding structure. The auxiliary demolding structure is in rolling contact with the inner surface of the inner mold plate, and the auxiliary demolding structure can rotate in the pulling-out process of the inner mold plate so as to assist in pulling out of the inner mold plate. The problem that the prefabricated inner formwork is difficult to mount and dismount is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled building engineering, in particular to a forming mold for assembled concrete prefabricated cavity superimposed columns. Background Art

[0002] Prefabricated reinforced concrete structural systems have the advantages of high efficiency, economy, and environmental protection, and are widely used in the construction of industrial and civil buildings. Prefabricated concrete precast cavity composite columns are a new type of prefabricated concrete column structure. The prefabricated cavity reinforced concrete column shell containing all the steel mesh is prefabricated in the factory, transported to the construction site for positioning and installation, and finally poured into the cavity to form a whole with the prefabricated structure and the existing beams and bottom columns. Prefabricated concrete precast cavity composite columns have technical advantages such as light weight for hoisting and transportation, high structural integrity, fast and convenient construction, and formwork-free installation. It is a prefabricated concrete precast column product with strong market competitiveness.

[0003] However, there are great difficulties in the prefabrication of prefabricated concrete cavity composite columns. Since there are two concrete surfaces, inner and outer, in prefabricated concrete cavity composite columns, two sets of formwork, outer and inner formwork, are required during production in the prefabrication factory. There are a large number of stirrups inside the prefabricated concrete cavity composite columns for the shear and torsion resistance of the column body, resulting in a complex steel mesh inside the column. The complex steel mesh inside the cavity composite column makes it very inconvenient to install and remove the inner formwork of the prefabricated component.

[0004] In order to solve the problem that the prefabricated inner formwork is difficult to install and remove, the existing prefabricated concrete cavity composite columns often adopt the method of reducing the thickness of the prefabricated concrete layer to solve it. This method separates and prefabricates the cavity prefabricated columns that should be formed by concrete wrapped in steel bars as a whole during the prefabrication production process, and then forms a whole by welding or binding embedded parts. Due to the requirements of the concrete protective layer, the concrete thickness of the prefabricated concrete cavity column is relatively thin at this time, and it is very easy to crack during the construction process. The space of the prefabricated concrete cavity is limited, and combined with the complex steel mesh layout, it can only be connected through a small number of connection positions. Therefore, the connectivity between the prefabricated concrete and the steel cage is weak. The connection performance between the post-cast concrete and the prefabricated concrete cavity is also weakened, resulting in the inability of the new and old concrete of the prefabricated concrete cavity composite column to form an effective synergistic force, reducing the bearing capacity of the component and posing a hidden danger to the structural safety. Utility Model Content

[0005] In view of the defects of the above prior art, the utility model provides a forming mold for assembled concrete prefabricated cavity composite columns which has low cost, simple operation and easy disassembly.

[0006] The utility model is implemented by the following technical solutions:

[0007] A forming mold for assembled concrete prefabricated cavity composite columns, comprising a mold platform, an outer mold platform, an inner mold platform and an auxiliary demoulding structure, wherein the outer mold platform is arranged, the inner mold platform is arranged on the inner side of the outer mold platform, a casting cavity for casting concrete is formed between the inner mold platform and the outer mold platform, the inner side of the inner mold platform is used to place a steel cage, the steel cage comprises a plurality of longitudinal bars and a plurality of stirrups, the stirrups are arranged in sequence along the depth direction of the casting cavity, the stirrups are connected to the plurality of longitudinal bars, each stirrup is installed with the auxiliary demoulding structure, the auxiliary demoulding structure is in rolling contact with the inner surface of the inner mold platform, and the auxiliary demoulding structure can rotate during the extraction process of the inner mold platform to assist the extraction of the inner mold platform.

[0008] Furthermore, the auxiliary demoulding structure is: a circular rubber ring with a first opening, and the inner diameter of the circular rubber ring is consistent with the diameter of the stirrup.

[0009] Furthermore, the cross section of the annular rubber ring is set to be circular.

[0010] Furthermore, the auxiliary demoulding structure is: a U-shaped rubber ring with a second opening, and the inner arc portion of the U-shaped rubber ring is consistent with the diameter of the stirrup.

[0011] Furthermore, the cross section of the U-shaped rubber ring is set to be a rectangle.

[0012] Furthermore, the steel cage also includes a plurality of tie bars, and the inner formwork is provided with through holes for the tie bars to extend into the casting cavity.

[0013] A forming mold for assembled concrete prefabricated cavity composite columns, comprising a mold platform, an outer mold platform and an inner mold platform, wherein the outer mold platform is arranged on the mold platform, the inner mold platform is arranged on the inner side of the outer mold platform, a casting cavity for casting concrete is formed between the inner mold platform and the outer mold platform, the inner side of the inner mold platform is used to place a steel cage, the steel cage comprises a plurality of longitudinal bars and a plurality of stirrups, the inner mold platform comprises an outer plate, an inner plate and a plurality of Z-shaped connectors sandwiched between the outer plate and the inner plate, the Z-shaped connectors are used to connect the outer plate and the inner plate, the Z-shaped connectors can be deformed by external force to cause the outer plate and the inner plate to move relative to each other, thereby reducing the thickness of the inner mold platform.

[0014] Furthermore, the Z-shaped connecting member includes an upper side, a lower side and a middle side connecting the upper side and the lower side, the lengths of the upper side and the lower side are the same, the lengths of the upper side and the lower side are smaller than the length of the middle side, the upper side is connected to the outer layer board, and the lower side is connected to the inner layer board.

[0015] Furthermore, it also includes a positioning pin for connecting the outer plate and the inner plate, the outer plate and the inner plate are respectively provided with positioning holes, and the positioning pin is inserted into the positioning holes to connect the outer plate and the inner plate.

[0016] Furthermore, the Z-shaped connecting piece is made of steel or hard plastic; or the outer plate and the inner plate are both made of rubber plates or hard plastic plates.

[0017] Compared with the prior art, the beneficial effects of the present invention include at least:

[0018] 1. By installing an auxiliary demoulding structure on the stirrups, the auxiliary demoulding structure is in rolling contact with the inner formwork. During the process of pulling out the inner formwork, the auxiliary demoulding structure will rotate. On the one hand, it can guide the smooth pulling out of the inner formwork, and on the other hand, it can reduce the resistance of pulling out the inner formwork, making it easier to pull out the inner formwork from the complex steel cage, thereby facilitating the removal of the inner formwork.

[0019] 2. By setting the inner formwork as a double-layer structure and also sandwiching a Z-shaped connector, when the inner formwork is pulled, the Z-shaped connector will deform, causing the outer plate and the inner plate to move relative to each other, so that the thickness of the inner formwork is reduced, and the gap between the inner formwork and the stirrups becomes larger, making it easier to pull out the inner formwork.

[0020] 3. The inner formwork is extracted to make the demoulding construction faster and greatly reduce the difficulty of operation; because the inner formwork is easy to disassemble, it is not necessary to retain the post-assembly gap between the steel cage and the formwork concrete. Therefore, the thickness of the formwork concrete can be as thick as possible, which improves the safety performance of the prefabricated component concrete. During transportation and hoisting, the risk of damage to the cavity prefabricated formwork during transportation and hoisting is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a forming mold for an assembled concrete prefabricated cavity composite column provided by the utility model;

[0022] Figure 2 yes Figure 1 Schematic diagram of AA, the auxiliary demoulding structure adopts a circular rubber ring;

[0023] Figure 3 This is a state diagram of the circular rubber ring of the utility model after rotation;

[0024] Figure 4 yes Figure 1 Schematic diagram of AA, the auxiliary demoulding structure adopts a U-shaped rubber ring;

[0025] Figure 5 This is a state diagram of the U-shaped rubber ring of the utility model after rotation;

[0026] Figure 6 It is a schematic diagram of the inner template of the second embodiment of the present utility model;

[0027] Figure 7 It is a schematic diagram of the inner template of the second embodiment of the present utility model when it is not stretched;

[0028] Figure 8 It is a schematic diagram of the inner template after stretching in the second embodiment of the utility model;

[0029] In the figure: 1. formwork; 2. outer formwork; 3. inner formwork; 31. outer plate; 32. inner plate; 4. steel cage; 41. stirrups; 42. longitudinal reinforcement; 43. tie bars; 5. circular rubber ring; 6. U-shaped rubber ring; 7. Z-shaped connector; 71. upper side; 72. lower side; 73. middle side; 8. positioning pins; 9. formwork concrete. DETAILED DESCRIPTION

[0030] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0031] The words expressing positions and directions described in the present utility model are all explained by taking the drawings as examples, but they can be changed as needed, and all the changes are included in the protection scope of the present utility model.

[0032] Embodiment 1

[0033] like Figure 1 As shown, the utility model provides a forming mold for an assembled concrete prefabricated cavity composite column, the forming mold includes a mold base 1, an outer mold base 2, an inner mold base 3 and an auxiliary demoulding structure, the outer mold base 2 is arranged on the mold base 1, the inner mold base 3 is arranged on the inner side of the outer mold base 2, a casting cavity for casting concrete is formed between the inner mold base 3 and the outer mold base 2, the inner side of the inner mold base 3 is used to place a steel cage 4, the steel cage 4 includes a plurality of longitudinal bars 42 and a plurality of stirrups 41, the plurality of stirrups 41 are arranged in sequence along the depth direction of the casting cavity, the stirrups 41 are connected to the plurality of longitudinal bars 42, each stirrup 41 is installed with the auxiliary demoulding structure, the auxiliary demoulding structure is in rolling contact with the inner surface of the inner mold base 3, and the auxiliary demoulding structure can rotate during the extraction process of the inner mold base 3 to assist the extraction of the inner mold base 3.

[0034] In this embodiment, the construction steps of the forming mold are: first, prefabricate the steel cage 4; second, install the auxiliary demoulding structure on the stirrups 41; third, position the steel cage 4 on the mold base 1 and install the outer mold 2; fourth, place the inner mold 3; fifth, pour concrete into the casting cavity to form a mold shell; sixth, pull out the inner mold 3 and remove the outer mold 2.

[0035] In this embodiment, an auxiliary demoulding structure is installed on the stirrup 41. The auxiliary demoulding structure is in rolling contact with the inner formwork 3. During the process of extracting the inner formwork 3, the auxiliary demoulding structure will rotate. On the one hand, it can guide the smooth extraction of the inner formwork 3, and on the other hand, it can reduce the resistance of extracting the inner formwork 3, making it easier for the inner formwork 3 to be extracted from the complex steel cage 4, thereby facilitating the removal of the inner formwork 3. The inner formwork 3 is extracted, and the auxiliary demoulding structure is designed to make the demoulding construction speed faster and greatly reduce the difficulty of operation; since the inner formwork 3 is easy to disassemble, there is no need to retain the post-assembly gap between the steel cage 4 and the formwork concrete 9. Therefore, the thickness of the formwork concrete 9 can be as thick as possible, so that the safety performance of the prefabricated concrete is improved. During transportation and hoisting, the risk of damage to the cavity prefabricated formwork during transportation and hoisting is reduced.

[0036] In one embodiment, see Figure 2 The auxiliary demoulding structure is: a circular rubber ring 5 with a first opening, and the inner diameter of the circular rubber ring 5 is consistent with the diameter of the stirrup 41.

[0037] In this embodiment, refer to Figure 3 When the inner template 3 is stretched and removed, the annular rubber ring 5 rotates, thereby pushing the inner template 3 out, which can reduce the resistance to the inner template 3 being pulled out; the annular rubber ring 5 contacts the inner template 3, which can reduce the contact area between the inner template 3 and the annular rubber ring 5, thereby reducing the friction force of pulling out the inner template 3, making it easier to pull out the inner template 3. In order to facilitate the installation of the annular rubber ring 5, a first opening is provided on the annular rubber ring 5, wherein the first opening angle range is optimized to be 30° to 45°. In addition, the inner and outer surfaces of the annular rubber ring 5 should be sufficiently smooth, so the material can be selected from hard plastics such as harder and smoother PVC, thereby reducing the friction coefficient.

[0038] In a specific embodiment, the cross section of the annular rubber ring 5 is set to be circular, which makes the annular rubber ring 5 have point contact with the inner template 3 and line contact with the stirrup 41, thereby reducing the contact area and facilitating the extraction of the inner template 3.

[0039] In one embodiment, see Figure 4 The auxiliary demoulding structure is: a U-shaped rubber ring 6 with a second opening, and the inner arc part of the U-shaped rubber ring 6 is consistent with the diameter of the stirrup 41.

[0040] The auxiliary demoulding structure of this embodiment is a U-shaped rubber ring 6, see Figure 5 When the inner template 3 is stretched and removed, the U-shaped rubber ring 6 rotates, causing the opening direction of the U-shaped rubber ring 6 to change, so that there is a gap between the U-shaped rubber ring 6 and the inner template 3, which is conducive to the extraction of the inner template 3. The larger the gap, the easier it is to extract the inner template 3 from the complex steel cage 4. In order to facilitate the installation of the U-shaped rubber ring 6, a second opening is opened on the U-shaped rubber ring 6; in addition, the outer surface of the U-shaped rubber ring 6 must be smooth enough, so the material can be selected from hard plastics such as harder and smoother PVC, thereby reducing the friction coefficient and making it more conducive to the extraction of the inner template 3.

[0041] In a specific embodiment, the cross section of the U-shaped rubber ring 6 is set to be rectangular. This makes the U-shaped rubber ring 6 have linear contact with the inner template 3 and the stirrup 41, thereby reducing the contact area and making it easier to extract the inner template 3.

[0042] In a specific embodiment, the inner template 3 is made of a hard material with certain deformation properties, such as a rubber sheet. The rubber sheet will stretch when subjected to tension, and the cross-sectional area will decrease, making it easier to remove the inner template 3.

[0043] In a specific embodiment, the steel cage 4 also includes a plurality of tie bars 43, and the inner formwork 3 is provided with through holes for the tie bars 43 to extend into the casting cavity. The steel cage 4 and the formwork concrete 9 can be connected by a large number of tie bars 43. After pouring concrete in the casting cavity, the bonding and anchoring properties of the formwork concrete 9 and the tie bars 43 are utilized, reducing the process of pre-embedded parts or pre-embedded holes, so that the overall performance of the prefabricated concrete prefabricated cavity composite column is good. The steel cage 4 and the formwork concrete 9 are integrally formed at one time, reducing the process of installing the steel cage 4 into the formwork concrete 9, and avoiding the risk of damage to the formwork concrete 9 caused by this installation work, and reducing the problem of inaccurate positioning of the steel cage 4 due to deformation of the steel cage 4 during hoisting.

[0044] Embodiment 2

[0045] See also Figure 6The utility model also provides a forming mold for an assembled concrete prefabricated cavity composite column, comprising a mold platform 1, an outer mold platform 2 and an inner mold platform 3, wherein the outer mold platform 2 is arranged on the mold platform 1, and the inner mold platform 3 is arranged on the inner side of the outer mold platform 2, and a cavity for pouring concrete is formed between the inner mold platform 3 and the outer mold platform 2, and the inner side of the inner mold platform 3 is used to place a steel cage 4, wherein the steel cage 4 comprises horizontal stirrups 41 and vertical longitudinal bars 42, and the inner mold platform 3 comprises an outer plate 31, an inner plate 32 and a plurality of Z-shaped connectors 7 sandwiched between the outer plate 31 and the inner plate 32, wherein the Z-shaped connector 7 is used to connect the outer plate 31 and the inner plate 32, and the Z-shaped connector 7 can be deformed by an external force to cause the outer plate 31 and the inner plate 32 to move relative to each other, thereby reducing the thickness of the inner mold platform 3.

[0046] The difference between the molding die of the second embodiment and the first embodiment is that the inner mold plate 3 of the second embodiment is different from the inner mold plate 3 of the first embodiment in structure. The inner mold plate 3 of the first embodiment is a single-layer structure, while the inner mold plate 3 of the second embodiment is a double-layer structure, and is further provided with a Z-shaped connector 7. Figure 7-8 When the inner formwork 3 is pulled, the Z-shaped connector 7 will be deformed, causing the outer plate 31 and the inner plate 32 to move relative to each other, so that the thickness of the inner formwork 3 is reduced, so that the gap between the inner formwork 3 and the stirrups 41 becomes larger, making it easier to pull out the inner formwork 3.

[0047] In a specific embodiment, the Z-shaped connector 7 includes an upper side 71, a lower side 72, and a middle side 73 connecting the upper side 71 and the lower side 72. The upper side 71 and the lower side 72 have the same length, and the lengths of the upper side 71 and the lower side 72 are less than the length of the middle side 73. The upper side 71 is connected to the outer layer board 31, and the lower side 72 is connected to the inner layer board 32. Preferably, the length of the middle side 73 is 1.5 times the length of the upper side 71.

[0048] In a specific embodiment, a positioning pin 8 is further included for connecting the outer plate 31 and the inner plate 32. The outer plate 31 and the inner plate 32 are respectively provided with positioning holes, and the positioning pin 8 is inserted into the positioning holes to connect the outer plate 31 and the inner plate 32. The inner template 3 is positioned and connected by the positioning pin 8. When the inner template 3 is to be removed, the positioning pin 8 is first pulled out, and then the inner template 3 is pulled, so that the Z-shaped connector 7 is deformed.

[0049] In a specific embodiment, the Z-shaped connector 7 is made of steel or hard plastic; of course, the Z-shaped connector 7 can also be made of other materials. Alternatively, the outer plate 31 and the inner plate 32 are both made of rubber plates or hard plastic plates, so that the outer plate 31 and the inner plate 32 have a certain rigidity.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A forming mold for prefabricated concrete cavity composite columns, characterized in that: The invention comprises a formwork platform (1), an outer formwork (2), an inner formwork (3) and an auxiliary demoulding structure, wherein the outer formwork (2) is arranged on the formwork platform (1), the inner formwork (3) is arranged on the inner side of the outer formwork (2), a casting cavity for casting concrete is formed between the inner formwork (3) and the outer formwork (2), the inner side of the inner formwork (3) is used to place a steel cage (4), the steel cage (4) comprises a plurality of longitudinal bars (42) and a plurality of stirrups (41), the plurality of stirrups (41) are arranged in sequence and spaced apart along the depth direction of the casting cavity, the stirrups (41) are connected to the plurality of longitudinal bars (42), each stirrup (41) is provided with the auxiliary demoulding structure, the auxiliary demoulding structure is in rolling contact with the inner surface of the inner formwork (3), and the auxiliary demoulding structure can rotate during the process of extracting the inner formwork (3) to assist in extracting the inner formwork (3).

2. The forming mold for the assembled concrete prefabricated cavity composite column according to claim 1 is characterized in that: The auxiliary demoulding structure is a circular rubber ring (5) having a first opening, wherein the inner diameter of the circular rubber ring (5) is consistent with the diameter of the stirrup (41).

3. The forming mold for the assembled concrete prefabricated cavity composite column according to claim 2 is characterized in that: The cross section of the annular rubber ring (5) is arranged to be circular.

4. The forming mold for the assembled concrete prefabricated cavity composite column according to claim 1, characterized in that: The auxiliary demoulding structure is a U-shaped rubber ring (6) having a second opening, wherein the inner arc portion of the U-shaped rubber ring (6) is consistent with the diameter of the stirrup (41).

5. The forming mold for the assembled concrete prefabricated cavity composite column according to claim 4 is characterized in that: The cross section of the U-shaped rubber ring (6) is arranged to be rectangular.

6. The forming mold for the assembled concrete prefabricated cavity composite column according to claim 1, characterized in that: The steel cage (4) further comprises a plurality of tie bars (43), and the inner formwork (3) is provided with through holes for the tie bars (43) to extend into the casting cavity.

7. A forming mold for prefabricated concrete cavity composite columns, characterized in that: The invention comprises a formwork platform (1), an outer formwork (2) and an inner formwork (3), wherein the outer formwork (2) is arranged on the formwork platform (1), the inner formwork (3) is arranged on the inner side of the outer formwork (2), a casting cavity for casting concrete is formed between the inner formwork (3) and the outer formwork (2), the inner side of the inner formwork (3) is used to place a steel cage (4), the steel cage (4) comprises a plurality of longitudinal bars (42) and a plurality of stirrups (41), the inner formwork (3) comprises an outer plate (31), an inner plate (32) and a plurality of Z-shaped connectors (7) sandwiched between the outer plate (31) and the inner plate (32), the Z-shaped connectors (7) being used to connect the outer plate (31) and the inner plate (32), the Z-shaped connectors (7) being able to deform under external force to cause the outer plate (31) and the inner plate (32) to move relative to each other, thereby reducing the thickness of the inner formwork (3).

8. The forming mold for the assembled concrete prefabricated cavity composite column according to claim 7, characterized in that: The Z-shaped connecting member (7) comprises an upper side (71), a lower side (72) and a middle side (73) connecting the upper side (71) and the lower side (72); the lengths of the upper side (71) and the lower side (72) are the same; the lengths of the upper side (71) and the lower side (72) are less than the length of the middle side (73); the upper side (71) is connected to the outer layer plate (31), and the lower side (72) is connected to the inner layer plate (32).

9. The forming mold for the assembled concrete prefabricated cavity composite column according to claim 7, characterized in that: It also includes a positioning pin (8) for connecting the outer plate (31) and the inner plate (32); the outer plate (31) and the inner plate (32) are respectively provided with positioning holes; the positioning pin (8) is inserted into the positioning holes to connect the outer plate (31) and the inner plate (32).

10. The forming mold for the assembled concrete prefabricated cavity composite column according to claim 7, characterized in that: The Z-shaped connecting piece (7) is made of steel or hard plastic; or the outer plate (31) and the inner plate (32) are both made of rubber plates or hard plastic plates.

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