Self-supporting prefabricated wall mold, prefabricated wall and connection structure

Abstract

The present invention discloses a self-supporting prefabricated wall mold, comprising a mold frame, wherein the mold frame comprises a first module and a second module, wherein the first module is used to form a concrete pouring channel in the prefabricated wall, and the second module is connected to one end of the first module to form a cast-in-place cavity; a top screw installation portion is provided inside the second module, and a first top screw is installed on the top screw installation portion, wherein one end of the first top screw is a free end close to the mold frame, and the other end of the first top screw is pressed against one end of the second module close to the first module.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated walls, in particular to a self-supporting prefabricated wall mould and a prefabricated wall and a connecting structure. Background Art

[0002] The manufacturing process of prefabricated walls is to use a mold to cast concrete in the factory to obtain a wall of corresponding structure. In order to leave a cavity inside the prefabricated wall for pouring on the construction site, it is necessary to design a corresponding module in the mold.

[0003] Usually, a precast wall mold includes a mold frame, and modules are designed in the mold frame to form a cast-in-place cavity. When making a precast wall, concrete flows into the gap in the mold frame. After the concrete solidifies, the modules and the mold frame are disassembled to obtain a precast wall.

[0004] For example, CN108748624A is a mold and a corresponding prefabricated wall invented by the applicant, wherein the mold mainly comprises a mold frame, a mold tube arranged in the mold frame and a cast-in-place cavity module at one end of the mold tube, wherein the mold tube is used to form a concrete pouring channel.

[0005] During the production of prefabricated walls, the positions of the mold frame and its internal modules must be kept fixed. If they are misaligned, it will easily lead to defects in the processing accuracy of the prefabricated wall. However, there is currently no very good method to fix the mold. Summary of the invention

[0006] The object of the present invention is to provide a self-supporting prefabricated wall mold and a prefabricated wall, so that at least a part of the mold can be fixed during prefabrication to improve the processing accuracy of the wall.

[0007] To achieve the above-mentioned object, in a first aspect, an embodiment of the present invention provides a prefabricated wall mold, comprising a mold frame, wherein the mold frame comprises a first module and a second module, wherein the first module is used to form a concrete pouring channel in the prefabricated wall, and the second module is connected to one end of the first module to form a cast-in-place cavity;

[0008] A top screw installation portion is provided inside the second module, and a first top screw is installed on the top screw installation portion. One end of the first top screw is a free end close to the mold frame, and the other end of the first top screw presses against an end of the second module close to the first module.

[0009] Furthermore, the bottom of the vertical reinforcement of the prefabricated wall is inserted into the second module.

[0010] Furthermore, the mold frame includes four side molds enclosed in a rectangular shape, and a second top screw is vertically provided on at least one of the side molds.

[0011] Furthermore, the top screw installation portion includes a top screw support, which is fixed on at least one side of the inner wall of the second module. The top screw support is configured with a hole for the first top screw to pass through, and the first top screw passes through the top screw support and is supported by the top screw support.

[0012] Furthermore, a gasket is connected to one end of the first top screw close to the first module.

[0013] Furthermore, the gasket and the end of the first module are staggered with each other.

[0014] Furthermore, a pulling part is provided in the second module, and the self-supporting prefabricated wall mold is also equipped with a demoulding tool, which includes a main body for fixing to the mold frame and a hook installed on the main body, and the hook cooperates with the pulling part; the hook and the main body are connected by a connecting part.

[0015] Furthermore, the connecting portion is a bolt or a hydraulic puller.

[0016] In a second aspect, an embodiment of the present invention provides a prefabricated wall, which is manufactured using the above-mentioned prefabricated wall mold.

[0017] In a third aspect, an embodiment of the present invention provides a connection structure of a prefabricated wall, comprising an upper wall and a lower wall, wherein the upper wall and the lower wall are both the prefabricated walls described above, wherein the vertical steel bars at the top of the lower wall are inserted into the cast-in-place cavity at the bottom of the upper wall.

[0018] Furthermore, the vertical steel bars at the top of the lower wall and the vertical steel bars at the bottom of the upper wall are both circular steel bars.

[0019] Furthermore, stirrups are wrapped around the outer edges of the longitudinal reinforcements at the bottom of the prefabricated wall.

[0020] Compared with the prior art, the present invention has the following beneficial effects: a first top screw is arranged in the second module used to construct the cast-in-place cavity, and the first top screw can play the role of tightening the first module and the second module, thereby stabilizing the relative positions between the various components of the entire mold and helping to improve the production accuracy of the prefabricated wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a mold frame structure of a self-supporting prefabricated wall mold provided by an embodiment of the present invention;

[0022] Figure 2 Schematic diagram of the position of the second top screw;

[0023] Figure 3A schematic diagram of the combined structure of the first module and the second module in one embodiment;

[0024] Figure 4 for Figure 3 The enlarged structural diagram of the second module;

[0025] Figure 5 is a schematic diagram of the combined structure of the first module and the second module in another embodiment;

[0026] Figure 6 for Figure 5 The enlarged structural diagram of the second module;

[0027] Figure 7 for Figure 6 Schematic diagram of the structure from another angle;

[0028] Figure 8 A schematic structural diagram of a prefabricated wall (interior wall) provided in an embodiment of the present invention;

[0029] Fig. 9 for Figure 8 A schematic diagram of the structure of the enlarged cast-in-place cavity in the middle and bottom parts;

[0030] Fig.10 A schematic diagram of the structure of a prefabricated wall (exterior wall) provided for an embodiment of the invention;

[0031] Fig.11 A schematic structural diagram of a demoulding mold provided by an embodiment of the present invention;

[0032] Fig.12 for Fig.11 Schematic diagram of the mold and module connection in the demoulding process;

[0033] Fig.13 A schematic structural diagram of a demoulding mold provided by another embodiment of the present invention;

[0034] Fig.14 for Fig.13 Schematic diagram of the mold and module connection in the demoulding process;

[0035] Fig.15 It is a schematic diagram of the connection structure of the inner wall of the prefabricated wall;

[0036] Fig.16 It is a schematic diagram of the connection structure of the outer wall of the prefabricated wall;

[0037] Fig.17 A schematic diagram of the structure of a prefabricated wall provided by an embodiment of the present invention;

[0038] Fig.18 for Fig.17 The structural diagram at the bottom;

[0039] Fig.19 It is a structural schematic diagram of the connection between the upper and lower walls;

[0040] Fig. 20 for Fig.19 A schematic diagram of the local enlarged structure at the connection;

[0041] Fig.21 A schematic structural diagram of a prefabricated wall with thermal insulation provided by an embodiment of the present invention;

[0042] Fig. 22 for Fig.21 Structural diagram of the wall when the upper and lower layers are connected;

[0043] Fig.23 FIG. 4 is a schematic diagram of the structure of the second module in another embodiment.

[0044] In the figure: 1-first module; 2-second module; 3-mould frame; 4-second top screw; 5-first top screw; 6-gasket; 7-vertical steel bar; 8-transverse steel bar; 9-concrete pouring channel; 10-cast-in-place cavity; 11-hoops; 12-enclosed section; 13-second baffle; 21-top screw support; 211-vertical plate; 212-wing plate; 213-threaded sleeve; 214-baffle; 215-through groove; 216-rack; 217-rotating shaft; 218-gear; 31-side mould opening. DETAILED DESCRIPTION

[0045] The principle and spirit of the present invention will be described below with reference to several exemplary embodiments shown in the accompanying drawings. It should be understood that these embodiments are described only to enable those skilled in the art to better understand and implement the present invention, and are not intended to limit the scope of the present invention in any way.

[0046] Please refer to Figure 1-7 The self-supporting prefabricated wall mold provided by the embodiment of the present invention comprises a mold frame 3 and a first module 1 and a second module 2 which are mostly arranged in the mold frame. The first module 1 is generally tubular and is used to form a concrete pouring channel inside the prefabricated wall after pouring. The second module 2 is generally box-shaped and is used to form a cast-in-place cavity at the bottom of the prefabricated wall.

[0047] The mold frame 3 is formed by four side molds that are generally in the shape of channel steel. The mold frame for doors and windows can also be set in the middle. On each side mold, a number of second top screws 4 are set perpendicular to the surface of the side mold. The second top screws can be used to support external objects to ensure that the position of the side mold is relatively stable.

[0048] A plurality of side mold openings 31 are provided on the side mold at the bottom and are spaced apart in the transverse direction for inserting and removing the first module 1 and the second module 2 .

[0049] The second module 2 has a top screw installation part inside for installing the first top screw 5. In this embodiment, the top screw installation part is a plurality of top screw supports 21 arranged along a longitudinal straight line. Each top screw support 21 includes a substantially rectangular vertical plate 211 and a substantially triangular wing plate 212 connected to both sides of the vertical plate. The vertical plate 211 and the wing plate 212 are perpendicular to the front and rear inner walls of the second module 2. A hole for the first top screw 5 to pass through is also provided in the middle of the vertical plate 211, and a threaded sleeve 213 is also connected to the hole. One end of the first top screw 5 extends from the bottom of the second module 2, and the other end passes through each top screw support 21, and finally presses against the top of the inner wall of the second module 2. The first top screw 5 is also connected to a gasket 6 at this end to make the force more uniform. The position of the gasket 6 can be staggered with the position of the first module 1 in the horizontal direction. An opening is also provided at the top of the second module 2, which corresponds to the bottom of the first module 1, for the first module 1 to extend into. Since the positions of the first module 1 and the gasket 6 are staggered, if the first module 1 and the second module 2 adopt a split design, it is convenient for production personnel to observe whether the assembly of the first module 1 and the second module 2 is aligned.

[0050] During the manufacturing process of the prefabricated wall, transverse reinforcements and vertical reinforcements 7 of the wall are pre-embedded in the mold frame, wherein the bottom of the vertical reinforcement 7 is also inserted into the interior of the second module 2 .

[0051] Figure 4 and Figure 6 They are respectively a second module for constructing a cast-in-place cavity at the bottom of an inner wall and a second module for constructing a cast-in-place cavity at the bottom of an outer wall. Figure 4 and Figure 6 The difference is that baffles 214 are provided on both sides of the second module, and baffles 214 are provided with through slots 215 for the transverse reinforcement 8 of the cast-in-place area to pass through, and each baffle 214 is connected to a vertically arranged rack 216 on the inner side, and a rotating shaft 217 is provided on the inner side of the rack 216, and a gear 218 is connected to the rotating shaft 217 to cooperate with the rack 216. When removing the mold, the rotating shaft 217 is rotated, and the gear 218 drives the rack 215 and then drives the baffle 214 to move, separate from the transverse reinforcement 8, so that the second module 2 can be drawn out from the mold frame 3.

[0052] When the above-mentioned prefabricated wall mold is used, the mold frame 3 is first set up, and then the first module 1 and the second module 2 are inserted in sequence from the opening at the bottom of the mold frame 3. Since the side mold at the top of the mold frame 3 is closed, the top of the first module 1 is pressed against the inner side of the top side mold of the mold frame 3. At this time, the first top screw 5 at the bottom is adjusted so that the first module 1 and the second module 2 are tightly fixed to the mold frame 3 to achieve the effect of self-supporting. Then concrete is poured into the mold frame 3, and the concrete is filled into the gap between the mold frame 3 and the first module 1 and the second module 2. After the concrete solidifies, the first module 1 and the second module 2 are removed from the bottom to form a concrete pouring channel 9 and a cast-in-place cavity 10 inside the prefabricated wall. Finally, the side molds on the four sides are removed to obtain the prefabricated wall.

[0053] like Figure 11-14 As shown, in order to facilitate the removal of the wall mold, a pulling portion is provided in the second module 2, and the pulling portion can be a bolt 22 (such as a bolt 22) vertically fixed to the inner side of the second module. Figure 11-12 As shown). The self-supporting top prefabricated wall mold is also equipped with a demolding tool, which includes a main body for fixing to the mold frame and a hook 121 installed on the main body, the hook 121 cooperates with the pulling part; the hook 121 and the main body are connected by a connecting part. In this embodiment, the main body of the demolding tool is an L-shaped plate 131, the top of the L-shaped plate 131 is fixed to the upper edge of the side mold, and the front of the L-shaped plate 131 is parallel to the side of the side mold. The connecting part includes a horizontal plate 14 perpendicular to the front of the L-shaped plate 131, the middle of the horizontal plate 14 is a screw hole, and the two sides are hinges 15, and the hook 121 is connected to the hinge. Bolts 16 arranged perpendicular to the surface of the horizontal plate 14 are installed on the horizontal plate 14. One end of the bolt 16 is connected to the L-shaped plate 131, and the pulling action of the hook 121 can be achieved by adjusting the bolt. In other embodiments, the bolt 16 can be replaced by a hydraulic ejector 17 (such as Figure 13-14 When in use, the L-shaped plate is placed on the side mold, the pulling part is pulled with a hook, and then the second inner module is pulled out.

[0054] The inner and outer walls of the prefabricated wall are as follows Figure 8 and Fig.10 As shown, the bottom cast-in-place cavity 10 of the prefabricated wall body has vertical steel bars 7. A circle of stirrups 11 are placed behind the periphery of the vertical steel bars 7 to play a positioning role.

[0055] like Figure 15-16As shown, an embodiment of the present invention further provides a connection structure of a prefabricated wall, including an upper wall 19 and a lower wall 18, wherein the upper wall and the lower wall are both the above-mentioned prefabricated walls, the prefabricated wall includes horizontally and vertically staggered steel bars, the top of the vertical steel bars extend from the top of the prefabricated wall, and the bottom of the prefabricated wall is a cast-in-place cavity, wherein the vertical steel bars 7 at the top of the lower wall 18 are inserted into the cast-in-place cavity at the bottom of the upper wall 19.

[0056] The vertical steel bars 7 at the top of the lower wall and the vertical steel bars 7 at the bottom of the upper wall are both annular steel bars, that is, both adopt the ring anchor method, which further improves the anchoring strength of the wall connection.

[0057] Combination Fig.17 , 18 21. In some embodiments, the vertical steel bars 7 of the prefabricated wall are exposed in the cast-in-place area of ​​the cavity at the bottom of the prefabricated wall, such as in the cast-in-place cavity 10. The vertical steel bars 7 include at least one group, each group includes two steel bars, which are respectively arranged along the front and rear inner walls of the cast-in-place cavity. The bottom ends of the two vertical steel bars 7 are connected by a closed section 12, and the closed section 12 can be substantially arc-shaped to form a ring-shaped closed structure.

[0058] like Fig.19 , 20 22. When the upper and lower layers of this prefabricated wall are connected, the vertical steel bars 7 with the annular closed section 12 at the top of the lower wall extend into the cast-in-place cavity 10 at the bottom of the upper wall. In some embodiments, the portion of the vertical steel bars 7 of the lower layer extending into the cast-in-place cavity 10 of the upper layer can be staggered in the horizontal direction with the vertical steel bars at the bottom of the upper layer. This can improve the strength of the anchoring in the horizontal direction.

[0059] The embodiment of the present invention can also adopt Fig.23 The second module 2 shown has a plurality of openable and closable second baffles 13 for allowing vertical reinforcement to pass through, thereby facilitating demoulding.

[0060] The invention concept is described in detail using specific examples herein, and the description of the above embodiments is only used to help understand the core idea of ​​the invention. It should be pointed out that any obvious modification, equivalent substitution or other improvement made by a person of ordinary skill in the art without departing from the invention concept should be included in the protection scope of the present invention.

Claims

1. A self-supporting prefabricated wall mold, comprising a mold frame, wherein the mold frame comprises a first module and a second module, wherein the first module is used to form a concrete pouring channel in the prefabricated wall, and the second module is connected to one end of the first module to form a cast-in-place cavity; characterized in that: A top screw installation part is provided inside the second module, a first top screw is installed on the top screw installation part, one end of the first top screw is a free end close to the mold frame, and the other end of the first top screw is pressed against an end of the second module close to the first module; The bottom of the vertical reinforcement of the prefabricated wall is inserted into the second module; The mold frame includes four side molds enclosed in a rectangular shape, and at least one side mold is vertically provided with a second top screw; The jackscrew installation part includes a jackscrew support, which is fixed on at least one inner wall of the second module, and is configured with a hole for the first jackscrew to pass through, and the first jackscrew passes through the jackscrew support and is supported by the jackscrew support; A gasket is connected to one end of the first top screw close to the first module; The gasket and the end portions of the first module are staggered with each other.

2. The self-supporting prefabricated wall mold according to claim 1, characterized in that: A pulling part is provided in the second module, and the self-supporting prefabricated wall mold is also equipped with a demoulding tool. The demoulding tool includes a main body for fixing to the mold frame and a hook installed on the main body, and the hook cooperates with the pulling part; the hook and the main body are connected by a connecting part.

3. The self-supporting prefabricated wall mold according to claim 2, characterized in that: The connecting part is a bolt or a hydraulic puller.

4. A prefabricated wall, characterized in that: The self-supporting prefabricated wall mold is made from any one of claims 1-3.

5. The prefabricated wall according to claim 4, characterized in that: The outer edge of the longitudinal reinforcement at the bottom of the prefabricated wall is also wrapped with stirrups.

6. The prefabricated wall according to claim 4, characterized in that: The vertical steel bars of the precast wall are exposed in the cast-in-place area of ​​the cavity at the bottom of the precast wall. The vertical steel bars include at least one group, each group includes at least two steel bars, and the bottom end of each group of vertical steel bars is connected by a closed section to form a closed structure.

7. A connection structure of prefabricated walls, comprising an upper wall and a lower wall, wherein the upper wall and the lower wall are both prefabricated walls as described in claim 4, wherein the vertical steel bars at the top of the lower wall are inserted into the cast-in-place cavity at the bottom of the upper wall.

8. The connection structure of prefabricated walls according to claim 7, characterized in that: The vertical steel bars at the top of the lower wall and the vertical steel bars at the bottom of the upper wall are both circular steel bars.

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