Forming process and forming mold for precast concrete box-type house

Abstract

The invention discloses a forming process and a forming mold of a precast concrete box-type house. The forming process comprises the following steps: step S1, pouring concrete out of a house bottom plate; s2, a wall plate inner mold and a wall plate outer mold are mounted on the house bottom plate subjected to pouring forming, and a wall plate pouring cavity is formed between the wall plate inner mold and the wall plate outer mold; s3, a top plate mold is in lap joint with the wallboard inner mold, and a top plate pouring groove is formed between the top plate mold and the wallboard outer mold; s4, a temporary supporting rod is arranged at the bottom of the top plate mold; s5, concrete is poured into the wall plate pouring cavities and the top plate pouring grooves, and house wall plates and roof plates are formed; s6, after the house wall plates and the roof plate are poured and formed, the wall plate inner mold, the wall plate outer mold and the temporary supporting rods are removed; the top plate formwork is a non-dismantling formwork, and the top plate formwork is reserved on the roof plate formed through pouring. The production efficiency of the box-type house can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of assembled building engineering, and in particular to a molding process and a molding mold for a prefabricated concrete box-type house. Background Art

[0002] The box-type house is composed of four wall panels, a roof panel and a floor panel, and is also called a unit house. The existing precast concrete box-type house forming processes in my country are divided into three types: full splicing forming process, semi-splicing forming process and large steel mold one-time forming process.

[0003] The fully spliced ​​forming process is that the factory prefabricates the wall panels, top panels, and bottom panels, and then the components are transported to the site for assembly and forming. The semi-spliced ​​forming process is that the factory prefabricates some wall panels, top panels, and bottom panels, and the components are transported to the site for assembly and forming, and some parts are cast on site. The large steel mold one-time forming process requires an integral steel mold, which is cast and formed by the factory at one time and then transported to the site. However, the large steel mold one-time forming process has the disadvantages of complex molds, huge costs, difficulty in dismantling and supporting molds, the need for large-scale equipment, and high costs, which need to be improved. Summary of the invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a molding process and a molding mold for prefabricated concrete box-type houses, aiming to improve the production efficiency of box-type houses.

[0005] Technical solution: To achieve the above-mentioned purpose, the present invention provides a molding process and a molding mold for a precast concrete box-type house, wherein the box-type house is composed of a roof panel, a floor panel and a plurality of roof wall panels, and the molding process of the box-type house comprises the following steps: Step S1: Casting the floor panel with concrete; Step S2: Installing a wall panel inner mold and a wall panel outer mold on the casted floor panel, forming a wall panel casting cavity between the wall panel inner mold and the wall panel outer mold; Step S3: Overlapping the top panel mold on the wall panel inner mold, forming a top panel casting groove between the top panel mold and the wall panel outer mold; Step S4: Setting up a temporary support rod at the bottom of the top panel mold; Step S5: Casting concrete into the wall panel casting cavity and the top panel casting groove to form a roof wall panel and a roof panel; Step S6: After the roof wall panel and the roof panel are cast and formed, removing the wall panel inner mold, the wall panel outer mold and the temporary support rod; the top panel mold is a non-removal mold, and the top panel mold is retained on the cast roof panel.

[0006] Furthermore, in step S1, a steel mesh is laid and concrete is poured on the steel mesh to form a roof slab; in step S2, a steel mesh is laid in the wall panel casting cavity; in step S3, a steel mesh is laid in the roof casting groove.

[0007] Furthermore, the inner wall panel mold and the outer wall panel mold are both spliced ​​molds; in step S2, a plurality of sub-templates are spliced ​​and fixed on the roof floor to form the inner wall panel mold and the outer wall panel mold.

[0008] Furthermore, in step S2, anti-expansion mold tension members are installed between the wall panel inner mold and the wall panel outer mold; door and window openings are reserved on the wall panel inner mold and the wall panel outer mold, and the reserved door and window openings are supported by formwork; and pipelines are embedded in the wall panel casting cavity.

[0009] Furthermore, in step S3, the top plate casting groove is connected to the wall plate casting cavity; in step S5, concrete is poured into the wall plate casting cavity and the top plate casting groove at the same time to form seamlessly connected wall panels and roof panels.

[0010] Furthermore, a support pallet is provided on one side of the top of the wall panel inner mold; in step S3, when the top plate mold is overlapped on the wall panel inner mold, the support pallet assists in supporting the top plate mold.

[0011] Furthermore, the support tray is detachably mounted on the wall panel inner mold; in step S6, the support tray is first removed so that the support tray no longer supports the top plate mold, and then the wall panel inner mold is removed.

[0012] Furthermore, the support pallet can be movably displaced on the wall panel inner mold, and a clamping piece for controlling the position of the support pallet is also provided on the wall panel inner mold; in step S6, the support pallet is first displaced downward relative to the wall panel inner mold so that the support pallet no longer supports the top plate mold, and then the wall panel inner mold is removed.

[0013] Furthermore, a mounting plate is connected to the bottom of the support bracket, and a mounting hole is provided on the mounting plate, and a pin is inserted into the wall panel inner mold after passing through the mounting hole; the pin is arranged obliquely, and the mounting plate can slide obliquely along the pin, so that the support bracket is displaced downward relative to the wall panel inner mold; the clamping piece is a clamping strip installed on the wall panel inner mold, and the clamping strip can be movably rotated on the wall panel inner mold, and the clamping strip can be rotated to squeeze into between the mounting plate and the wall panel inner mold, and squeeze the mounting plate to the nail head attached to the pin to prevent the support bracket from sliding along the pin and keep the support bracket flush with the top of the wall panel inner mold; the end of the pin away from the wall panel inner mold is inclined upward; a clamping slot is provided on the clamping strip, and when the clamping strip is squeezed into between the mounting plate and the wall panel inner mold, the clamping strip enters the clamping slot accordingly; the clamping strip has two rotary arms, and when one of the rotary arms is squeezed into between the mounting plate and the wall panel inner mold, the other rotary arm points downward.

[0014] Furthermore, the forming mold includes a wall panel outer mold, a wall panel inner mold and a top plate mold; the wall panel outer mold and the wall panel inner mold are spaced apart, and a wall panel casting cavity is formed between the wall panel outer mold and the wall panel inner mold; the top plate mold is overlapped on the wall panel inner mold, and the upper end of the wall panel outer mold has a surrounding edge section higher than the top plate mold, and a top plate casting groove is formed between the top plate mold and the surrounding edge section, and the top plate casting groove is connected to the wall panel casting cavity; the top plate mold is a non-disassembly mold, and the top plate mold is combined with the concrete cast on the top plate mold to form the roof panel.

[0015] Beneficial effects: The molding process and molding mold of the prefabricated concrete box-type house of the present invention have the following beneficial effects:

[0016] 1) The top plate formwork is a non-removable formwork, that is, the top plate formwork and the roof plate are permanently cast together, so that the top plate formwork only needs to be supported and does not need to be removed, thereby improving the production efficiency of the container house;

[0017] 2) There is a support pallet on the inner mold of the wall panel, which can support the top plate mold; the support pallet can be movable relative to the inner mold of the wall panel. Before the inner mold of the wall panel needs to be removed, the support pallet is moved downward relative to the inner mold of the wall panel to avoid the support pallet supporting the top plate mold, making it difficult to remove the inner mold of the wall panel, thereby improving the removal efficiency of the support pallet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a flow chart of the molding process of the prefabricated concrete box-type house of the present invention;

[0019] Attached Figure 2 This is a structural diagram of a box-type house;

[0020] Attached Figure 3 It is a schematic diagram of the structure of the inner wall panel mold, the outer wall panel mold and the top plate mold;

[0021] Attached Figure 4 It is a schematic diagram when the top of the support plate and the top of the inner mold of the wall panel are flush with each other;

[0022] Attached Figure 5 It is a schematic diagram of the support plate after it moves downward relative to the inner mold of the wall panel. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] As attached Figures 1 to 5 The molding process and molding mold of the prefabricated concrete box-type house are as follows: Figure 2 As shown in the figure, the box-type house consists of a roof plate 1, a bottom plate 2 and four wall plates 3. Figure 3As shown in , the molding mold includes a wallboard outer mold 5, a wallboard inner mold 4 and a top plate mold 8. The wallboard outer mold 5 is used in conjunction with the wallboard inner mold 4. When assembled into a molding model, the wallboard outer mold 5 and the wallboard inner mold 4 are parallel to each other and spaced apart. There is a wallboard casting cavity 6 between the wallboard outer mold 5 and the wallboard inner mold 4. Concrete is poured in the wallboard casting cavity 6 to form a roof wallboard 3. The edge of the top plate mold 8 overlaps the wallboard inner mold 4, and the top plate mold 8 is supported by the wallboard inner mold 4. The upper end of the wallboard outer mold 5 has a surrounding edge section that is higher than the top plate mold 8. A top plate casting groove 7 is formed between the top plate mold 8 and the surrounding edge section, and the top plate casting groove 7 is connected to the wallboard casting cavity 6. The top plate mold 8 is a non-disassembly template, and the top plate mold 8 can be made of conventional cement-based materials such as cement pressure plates or cheap and commonly used wooden templates. The top plate formwork 8 is combined with the concrete poured on the top plate formwork 8 to form the roof slab 1, so that the top plate formwork 8 only needs to be supported but not dismantled, thereby improving the production efficiency of the container-type house.

[0025] The molding process of the box-type house includes the following steps:

[0026] Step S1: prepare the site and materials, lay the steel mesh on the site, and pour concrete on the steel mesh to form the roof slab 2;

[0027] Step S2: Install the inner wallboard mold 4 and the outer wallboard mold 5 on the cast roof slab 2; the inner wallboard mold 4 and the outer wallboard mold 5 are both spliced ​​molds, and several sub-molds are spliced ​​and fixed on the roof slab 2 to form the inner wallboard mold 4 and the outer wallboard mold 5; the inner wallboard mold 4 and the outer wallboard mold 5 can be aluminum alloy molds, plastic molds, etc. A wallboard casting cavity 6 is formed between the inner wallboard mold 4 and the outer wallboard mold 5, and a steel grid is laid in the wallboard casting cavity 6;

[0028] In addition, during the installation of the wall panel inner mold 4 and the wall panel outer mold 5, it is also necessary to install anti-expansion mold tensioning members, such as tensioning bolts, between the wall panel inner mold 4 and the wall panel outer mold 5; door and window openings are reserved on the wall panel inner mold 4 and the wall panel outer mold 5, and the reserved door and window openings are supported by molds. According to needs, corresponding pipelines should also be pre-buried in the wall panel casting cavity 6;

[0029] Step S3: overlap the top plate formwork 8 on the wall panel inner formwork 4, form a top plate casting groove 7 between the top plate formwork 8 and the wall panel outer formwork 5, the top plate casting groove 7 is connected with the wall panel casting cavity 6, and lay a steel mesh frame in the top plate casting groove 7;

[0030] Step S4: Setting up a temporary support rod 9 at the bottom of the top plate formwork 8;

[0031] Step S5: pouring concrete into the wall panel pouring cavity 6 and the roof panel pouring groove 7 simultaneously to form a seamlessly connected wall panel 3 and roof panel 1;

[0032] Step S6: After the wall panels 3 and the roof panels 1 are cast, the inner wall panel formwork 4, the outer wall panel formwork 5 and the temporary support rods 9 are removed; the top panel formwork 8 is a non-removable formwork, and the top panel formwork 8 is retained on the cast roof panel 1; then the structure of the wall panels 3 and the roof panel 1 is adjusted, and then the interior and exterior decoration is carried out, including insulation, heat insulation, pipeline layout, etc., to finally obtain a finished precast concrete box house.

[0033] In the molding process of the present invention, a spliced ​​formwork is adopted, and the support and removal of the formwork do not require large-scale machinery and equipment, and can be done manually, thereby greatly improving the efficiency; moreover, the size of the prefabricated container-type house can be changed arbitrarily, and the mold can be used flexibly and conveniently; in addition, the integrated pouring of concrete can also improve the overall rigidity and waterproofness of the house; the application of the top plate without demolding greatly improves the production efficiency; the application of the combined mold makes the production efficiency higher and the product cost lower, which is convenient for promotion and application.

[0034] As attached Figure 3 As shown in FIG, a support pallet 10 is provided on the top of the wallboard inner mold 4 away from the side of the wallboard outer mold 5. In step S3, when the top plate mold 8 is overlapped on the wallboard inner mold 4, the support pallet 10 can assist in supporting the top plate mold 8 so that the top plate mold 8 can be overlapped on the wallboard inner mold 4 more stably.

[0035] In one embodiment, the support bracket 10 is detachably mounted on the wallboard inner mold 4, for example, the support bracket 10 is fixed to the wallboard inner plate by a detachable pin 11. In step S6, the support bracket 10 is first removed so that the support bracket 10 no longer supports the top plate mold 8, and then the wallboard inner mold 4 is removed. If the support bracket 10 is not removed before removing the wallboard inner mold 4, the support bracket 10 is pressed against the top plate mold 8, which makes it difficult to remove the wallboard inner mold 4.

[0036] In another embodiment, the support bracket 10 can be movably displaced on the wall panel inner mold 4, and a clamping piece for controlling the position of the support bracket 10 is also provided on the wall panel inner mold 4. In step S6, the support bracket 10 is first displaced downward relative to the wall panel inner mold 4, so that the top surface of the support bracket 10 is separated from the bottom surface of the top plate mold 8, and the support bracket 10 no longer supports the top plate mold 8, and then the wall panel inner mold 4 is removed. In this way, it is also possible to prevent the support bracket 10 from affecting the removal of the wall panel inner mold 4.

[0037] Specifically, as attached Figure 4 and 5As shown in the figure, a mounting plate 12 is connected below the support bracket 10. The support bracket 10 is a horizontal plate body, and the mounting plate 12 is a vertical plate body. A mounting hole is provided on the mounting plate 12. The pin 11 passes through the mounting hole and is inserted into the wallboard inner mold 4, so that the support bracket 10 is installed on the wallboard inner mold 4. The pin 11 is arranged obliquely, and the length of the pin 11 exposed outside the wallboard inner mold 4 is greater than the thickness of the mounting plate 12, so that the mounting plate 12 can slide obliquely along the pin 11, thereby enabling the support bracket 10 to move downward relative to the wallboard inner mold 4.

[0038] The clamping member is a clamping strip 13 installed on the wall panel inner mold 4. The clamping strip 13 can be rotatable on the wall panel inner mold 4. The clamping strip 13 can be rotated to squeeze into between the mounting plate 12 and the wall panel inner mold 4, and squeeze the mounting plate 12 to stick to the nail head of the pin 11 to prevent the support bracket 10 from sliding along the pin 11. Figure 4 As shown in , at this time, the support pallet 10 is kept flush with the top end of the wall panel inner mold 4, so that the support pallet 10 can support the top plate mold 8.

[0039] The end of the pin 11 away from the wall panel inner mold 4 is tilted upward. This tilted direction makes it difficult for the pressure of the support bracket 10 on the pin 11 to cause the pin 11 to fall off the wall panel inner mold 4. A slot is provided on the clamping strip 13. When the clamping strip 13 is squeezed into between the mounting plate 12 and the wall panel inner mold 4, the clamping strip 13 enters the slot accordingly, so that the clamping strip 13 can be stably stuck between the mounting plate 12 and the wall panel inner mold 4. The shape of the clamping strip 13 is similar to that of a bamboo dragonfly. There are two rotary arms on the clamping strip 13. The slot is set on one of the rotary arms. When one of the rotary arms is squeezed into between the mounting plate 12 and the wall panel inner mold 4, the other rotary arm points downward. Before the wall panel inner mold 4 needs to be removed, the worker can use a hammer to hit the rotary arm pointing downward to make the rotary arm stuck between the mounting plate 12 and the wall panel inner mold 4 fall out, and then the support bracket 10 will slide down along the pin 11 to the nearby Figure 5 As shown in , at this time, the support plate 10 is separated from the top plate formwork 8, which facilitates the removal of the wall panel inner formwork 4.

[0040] Since the support bracket 10 is installed on the top of the wall panel inner mold 4, it is time-consuming and laborious to remove. Therefore, compared with directly removing the support bracket 10, it takes less time to knock the clamping strip 13 out from between the mounting plate 12 and the wall panel inner mold 4 with a hammer, thereby improving the removal efficiency of the wall panel inner mold 4 and further improving the production efficiency of the entire box-type house.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. The molding process of prefabricated concrete box-type house is characterized by: The box-type house is composed of a roof plate (1), a floor plate (2) and a plurality of wall plates (3). The molding process of the box-type house comprises the following steps: Step S1: pouring concrete to form a roof slab (2); Step S2: installing a wall panel inner mold (4) and a wall panel outer mold (5) on the cast roof floor (2), and forming a wall panel casting cavity (6) between the wall panel inner mold (4) and the wall panel outer mold (5); Step S3: Overlapping the top plate formwork (8) on the wall panel inner formwork (4), forming a top plate casting groove (7) between the top plate formwork (8) and the wall panel outer formwork (5); Step S4: Setting up a temporary support rod (9) at the bottom of the top plate formwork (8); Step S5: pouring concrete into the wall panel pouring cavity (6) and the roof panel pouring groove (7) to form the wall panel (3) and the roof panel (1); Step S6: After the wall panels (3) and the roof panels (1) are cast and formed, the inner wall panel mold (4), the outer wall panel mold (5) and the temporary support rods (9) are removed; the top panel mold (8) is a non-removable mold, and the top panel mold (8) is retained on the cast and formed roof panel (1).

2. The molding process of the prefabricated concrete box-type house according to claim 1 is characterized in that: In step S1, a steel mesh is laid and concrete is poured on the steel mesh to form a roof slab (2); in step S2, a steel mesh is laid in a wall panel casting cavity (6); and in step S3, a steel mesh is laid in a roof panel casting groove (7).

3. The molding process of the prefabricated concrete box-type house according to claim 1 is characterized in that: The wall panel inner mold (4) and the wall panel outer mold (5) are both spliced ​​molds; in step S2, a plurality of sub-molds are spliced ​​and fixed on the roof floor (2) to form the wall panel inner mold (4) and the wall panel outer mold (5).

4. The molding process of the prefabricated concrete box-type house according to claim 3 is characterized in that: In step S2, an anti-expansion mold tension member is installed between the wall panel inner mold (4) and the wall panel outer mold (5); door and window openings are reserved on the wall panel inner mold (4) and the wall panel outer mold (5), and the reserved door and window openings are supported by molds; and pipelines are pre-buried in the wall panel casting cavity (6).

5. The molding process of the prefabricated concrete box-type house according to claim 1 is characterized in that: In step S3, the top plate casting groove (7) and the wall plate casting cavity (6) are connected to each other; in step S5, concrete is poured into the wall plate casting cavity (6) and the top plate casting groove (7) at the same time to form a seamlessly connected wall plate (3) and roof plate (1).

6. The molding process of the prefabricated concrete box-type house according to claim 1 is characterized in that: A support plate (10) is provided on one side of the top of the wall panel inner formwork (4); in step S3, when the top plate formwork (8) is overlapped on the wall panel inner formwork (4), the support plate (10) assists in supporting the top plate formwork (8).

7. The molding process of the prefabricated concrete box-type house according to claim 6 is characterized in that: The support tray (10) is detachably mounted on the wall panel inner mold (4); in step S6, the support tray (10) is first removed so that the support tray (10) no longer supports the top plate mold (8), and then the wall panel inner mold (4) is removed.

8. The molding process of the prefabricated concrete box-type house according to claim 6 is characterized in that: The support plate (10) can be movably displaced on the wall panel inner mold (4), and a clamping piece for controlling the position of the support plate (10) is also provided on the wall panel inner mold (4); in step S6, the support plate (10) is first displaced downward relative to the wall panel inner mold (4) so ​​that the support plate (10) no longer supports the top plate mold (8), and then the wall panel inner mold (4) is removed.

9. The molding process of the prefabricated concrete box-type house according to claim 8 is characterized in that: A mounting plate (12) is connected below the support bracket (10), and a mounting hole is provided on the mounting plate (12). The pin (11) passes through the mounting hole and is inserted into the wall panel inner mold (4). The pin (11) is arranged obliquely, and the mounting plate (12) can slide obliquely along the pin (11), so that the support bracket (10) moves downward relative to the wall panel inner mold (4). The clamping member is a clamping strip (13) mounted on the wallboard inner mold (4). The clamping strip (13) can be movably rotated on the wallboard inner mold (4). The clamping strip (13) can be rotated to be squeezed into between the mounting plate (12) and the wallboard inner mold (4), and the mounting plate (12) is pressed against the nail head of the pin (11) to prevent the support plate (10) from sliding along the pin (11) and to keep the support plate (10) flush with the top end of the wallboard inner mold (4); The end of the pin (11) away from the wall panel inner mold (4) is tilted upward; a slot is provided on the clamping strip (13); when the clamping strip (13) is squeezed between the mounting plate (12) and the wall panel inner mold (4), the clamping strip (13) enters the slot accordingly; the clamping strip (13) has two rotary arms; when one of the rotary arms is squeezed between the mounting plate (12) and the wall panel inner mold (4), the other rotary arm points downward.

10. The forming mold of the prefabricated concrete box-type house according to claim 1, characterized in that: The molding mold comprises a wall panel outer mold (5), a wall panel inner mold (4) and a top plate mold (8); the wall panel outer mold (5) and the wall panel inner mold (4) are spaced apart, and a wall panel casting cavity (6) is formed between the wall panel outer mold (5) and the wall panel inner mold (4); the top plate mold (8) is overlapped on the wall panel inner mold (4), and the upper end of the wall panel outer mold (5) has a surrounding edge section higher than the top plate mold (8), and a top plate casting groove (7) is formed between the top plate mold (8) and the surrounding edge section, and the top plate casting groove (7) and the wall panel casting cavity (6) are interconnected; the top plate mold (8) is a non-disassembly mold, and the top plate mold (8) is combined with concrete cast on the top plate mold (8) to form the roof panel (1).

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