Wall joint forming device

Abstract

This application discloses a wall joint forming device, comprising: an aluminum formwork K-plate, which is installed on the outside of the wall to be poured; an L-shaped plate, which is detachably installed above the aluminum formwork K-plate and extends to one side of the wall to be poured, for forming a wall tongue and groove joint; the height of the L-shaped plate and the aluminum formwork K-plate is the same as the height of the wall; a support block is provided on the side of the aluminum formwork K-plate away from the wall, and the L-shaped plate is installed on the support block through a detachable structure. This utility model replaces the traditional rough construction method of manual formwork or pre-embedded square steel, improving the one-time forming qualification rate of fair-faced concrete joints.

Description

Technical Field

[0001] This application relates to a wall joint forming device, belonging to the field of building tool technology. Background Technology

[0002] With the rapid development of the construction industry, people's demands for housing quality are increasing. The quality of wall joints at different floors is greatly affected by the skill level of manual operation, leading to varying degrees of deviation in the forming quality of the joint area and resulting in poor aesthetics. Projects typically invest heavily in joint repairs, which are costly and cannot guarantee the desired fair-faced concrete finish. Currently, traditional wall joints at different floors rely solely on manual control, with quality heavily influenced by worker skills. Some joints use pre-embedded square steel or embedded parts, which need to be removed after concrete pouring. Because these embedded parts are tightly bonded to the concrete, removal often leaves residues such as concrete fragments and rust within the tongue and groove joint, and may also damage the interior of the joint, increasing the difficulty and workload of cleaning. Therefore, a wall joint forming device needs to be designed to ensure quality and achieve a one-time forming process. Utility Model Content

[0003] According to one aspect of this application, a wall joint forming device is provided, which replaces the traditional rough construction method of manual formwork or pre-embedded square steel, thereby improving the one-time forming qualification rate of fair-faced concrete joints.

[0004] A wall joint forming device, characterized in that it includes:

[0005] Aluminum formwork K-plate, which is installed on the outside of the wall to be poured;

[0006] L-shaped plate, which is detachably installed above the aluminum formwork K plate and extends to one side of the wall to be poured, to form a wall tongue and groove, and the height of the L-shaped plate and the aluminum formwork K plate is the same as the height of the wall;

[0007] The aluminum formwork K-plate has a support block on the side away from the wall, and the L-shaped plate is installed on the support block through a detachable structure.

[0008] Furthermore, the detachable structure includes a first base and a second base. The first base is laterally provided with a rotating shaft. One end of the rotating shaft is fitted with a snap-fit ​​plate. The lower part of the snap-fit ​​plate is a pressing plate. A torsion spring connected to the pressing plate is fitted on the rotating shaft.

[0009] A limiting rod is provided laterally at one end of the second base, and the limiting rod is inserted into the side wall of the first base to engage with the snap-fit ​​plate.

[0010] The first base is mounted on the support block, and the second base is mounted on the L-shaped plate.

[0011] Furthermore, a limiting plate is provided at the other end of the rotating shaft, and the pressing plate limits the lower end of the limiting plate.

[0012] Furthermore, the limiting plate is connected to the first base via a connecting bolt above the rotating shaft.

[0013] Furthermore, a slot is provided on the side wall of the limiting rod, and the upper end of the snap-fit ​​plate is snapped into the slot.

[0014] Furthermore, the L-shaped plate includes a horizontal section and a vertical section, the horizontal section being connected to the second base, and the vertical section being used to form a tongue and groove joint in the wall.

[0015] Furthermore, the support block is a triangular support block, with one right-angled side connected to the outer side of the aluminum template K plate, and the other right-angled side of the triangular support block flush with the upper surface of the aluminum template K plate;

[0016] The first base is installed at the outer end of the right-angled side of the triangular support block, which is flush with the aluminum template K plate.

[0017] The beneficial effects that this application can produce include:

[0018] The wall joint forming device provided in this application features an L-shaped plate that is detachably installed on top of the aluminum formwork K-plate, rather than being pre-embedded in the concrete. During the pouring of the wall concrete, the L-shaped plate, as part of the formwork, together with the aluminum formwork K-plate, forms the forming space for the wall tongue and groove. After the concrete reaches a certain strength, the L-shaped plate can be directly removed from the support block, leaving no pre-embedded residue in the tongue and groove, thus fundamentally avoiding the cleaning difficulties caused by pre-embedded parts. Meanwhile, through modular and detachable design, a standardized tongue-and-groove structure is formed by combining L-shaped plates with aluminum formwork K-plates. Combined with the rigid triangular support system of triangular support blocks, high-precision control of the verticality and tongue-and-groove depth of the joint is achieved, completely replacing the traditional rough construction method of manual formwork or pre-embedded square steel. This improves the one-time molding qualification rate of fair-faced concrete joints. At the same time, the detachable structure with bolted connection realizes the reuse rate of the device, and there are no residual embedded parts in the tongue and groove after dismantling. It provides a low-cost, high-efficiency, and standardized joint quality control solution for prefabricated buildings and fair-faced concrete projects, effectively solving the core pain points of traditional processes such as large quality fluctuations, high repair costs, and low construction efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the top slab pouring process in one embodiment of this application;

[0020] Figure 2 This is a schematic diagram of a wall joint forming device in one embodiment of this application;

[0021] Figure 3 This is a schematic diagram of a detachable structure in one embodiment of this application;

[0022] List of components and attached drawings: 1-Aluminum formwork K-plate; 2-Wall; 3-L-shaped plate; 4-Support block; 5-First base; 6-Second base; 7-Rotating shaft; 8-Snap-fit ​​plate; 9-Pressing plate; 10-Torsion spring; 11-Limiting rod; 12-Limiting plate; 13-Connecting bolt. Detailed Implementation

[0023] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0024] See Figure 1-3 A wall joint forming device, characterized in that it includes:

[0025] Aluminum formwork K plate 1, wherein the aluminum formwork K plate 1 is installed on the outside of the wall 2 to be poured;

[0026] L-shaped plate 3, which is detachably installed above the aluminum formwork K plate 1 and extends to one side of the wall 2 to be poured, is used to form a wall tongue and groove. The height of the L-shaped plate 3 and the aluminum formwork K plate 1 is the same as the height of the wall 2.

[0027] The aluminum formwork K plate 1 is provided with a support block 4 on the side away from the wall, and the L-shaped plate 3 is installed on the support block 4 through a detachable structure.

[0028] Specifically, the aluminum formwork K-plate serves as the main positioning formwork for wall pouring, bearing the lateral pressure of the concrete and ensuring the verticality of the wall. It can be made of 6061-T6 aluminum alloy with an anodized surface to improve corrosion resistance; longitudinal stiffening ribs are installed on the back to enhance bending stiffness; a tongue-and-groove groove is pre-reserved at the top to nest with the horizontal section of the L-shaped plate. The L-shaped tongue-and-groove plate forms a groove by blocking the concrete through its vertical section, and connects to the aluminum formwork K-plate in its horizontal section. The height of the vertical section is adjusted according to design requirements (usually 1 / 5 to 1 / 3 of the wall thickness), and the ends are chamfered for easy demolding; the width of the horizontal section is ≥80mm, and a positioning pin is welded to the bottom to fit with the installation groove of the aluminum formwork K-plate to prevent displacement during pouring; support blocks transfer the lateral pressure of the concrete on the L-shaped plate to the aluminum formwork K-plate and enable quick assembly and disassembly. EPDM rubber sealing strips are pasted on the contact surface between the vertical section of the L-shaped plate and the wall to prevent grout leakage; construction sealant (such as silicone sealant) is applied to the joint between the aluminum formwork K-plate and the L-shaped plate to form a double seal. During concrete pouring, the concrete should be poured from the inside of the wall. The vibrator should be at least 300mm away from the vertical section of the L-shaped plate to avoid direct impact that could cause displacement. Monitor the laser positioning red line in real time to see if it deviates. If the deviation is greater than 3mm, stop the machine immediately for adjustment. During disassembly, use the detachable structure to quickly loosen the plate and remove the sealing strip. Rotate the L-shaped plate to separate it from the concrete. Clean the residue from the tongue and groove and apply a release agent for later use.

[0029] This application utilizes a modular and detachable design, combining L-shaped plates with aluminum formwork K-plates to form a standardized tongue-and-groove structure. Combined with a rigid triangular support system of triangular support blocks, it achieves high-precision control of the verticality and tongue-and-groove depth at the joint, completely replacing the traditional extensive construction method of manual formwork or pre-embedded square steel. This improves the one-time molding qualification rate of fair-faced concrete joints. At the same time, the detachable structure with bolted connections enables the reuse of the device, and there are no residual embedded parts in the tongue-and-groove after dismantling. It provides a low-cost, high-efficiency, and standardized joint quality control solution for prefabricated buildings and fair-faced concrete projects, effectively solving the core pain points of traditional processes such as large quality fluctuations, high repair costs, and low construction efficiency.

[0030] The detachable structure includes a first base 5 and a second base 6. The first base 5 is laterally provided with a rotating shaft 7. One end of the rotating shaft 7 is fitted with a snap-fit ​​plate 8. The lower part of the snap-fit ​​plate 8 is a pressing plate 9. A torsion spring 10 connected to the pressing plate 9 is fitted on the rotating shaft 7.

[0031] After the torsion spring 10 is fitted onto the rotating shaft 7, one torsion arm of the torsion spring 10 is fixed to a structure near the connection between the rotating shaft 7 and the first base 5 by welding, snapping, or wrapping, ensuring that the torsion arm will not rotate with the movement of the pressing plate 9. Simultaneously, a small hole, hook, or slot is provided on the pressing plate 9, allowing the other torsion arm of the torsion spring 10 to be inserted into the small hole, hung on the hook, or snapped into the slot, thus connecting the torsion spring 10 to the pressing plate 9. In this way, when the pressing plate 9 rotates around the rotating shaft 7, it will cause this end of the torsion arm of the torsion spring 10 to move together, causing the torsion spring 10 to undergo torsional deformation and generate elastic potential energy. When the external force is removed, the torsion spring 10 returns to its original shape, applying a reverse force to the pressing plate 9 through the connected torsion arm, causing it to reset.

[0032] A limiting rod 11 is provided laterally at one end of the second base 6. The limiting rod 11 is inserted into the side wall of the first base 5 and engages with the snap-fit ​​plate 8.

[0033] The first base 5 is mounted on the support block 4, and the second base 6 is mounted on the L-shaped plate 3.

[0034] Specifically, the first base serves as a fixed end, bearing the rotating shaft and torsion spring, and is mounted on the support block.

[0035] A T-slot at the bottom engages with a T-shaped guide rail at the top of the support block for quick positioning. A limit rod insertion hole is located on the side wall; the hole diameter is 0.2mm larger than the limit rod diameter to ensure smooth insertion and removal. A rotating shaft supports the rotation of the locking plate and transmits the spring force of the torsion spring. The end of the shaft nests with the locking plate to prevent relative rotation. The locking plate mechanically locks to the limit rod via a slot. A pressing plate acts as the operating part; pressing overcomes the torsion spring force to unlock. The torsion spring provides the locking plate with a restoring force, ensuring a stable locked state. The second base, as the movable end, carries the limit rod and is mounted on the L-shaped plate. The limit rod engages with the locking plate slot to achieve mechanical locking.

[0036] The limiting rod has trapezoidal teeth that match the involute teeth of the locking plate's groove; its end has a chamfer for easy insertion into the limiting rod insertion hole of the first base; a torsion spring keeps the locking plate rotating counterclockwise, and the groove engages with the trapezoidal teeth of the limiting rod to form a mechanical lock. At this time, the pressing plate is in its highest position, contacting the limiting boss on the side wall of the first base to prevent the locking plate from rotating excessively. During unlocking, external force presses down on the pressing plate, overcoming the torsion spring's force to make the locking plate rotate clockwise around its axis; the groove disengages from the trapezoidal teeth, and the limiting rod loses its constraint; the second base is pulled horizontally, and the limiting rod exits from its insertion hole, completing the unlocking process. During locking, the limiting rod of the second base is aligned with the insertion hole of the first base and pushed horizontally in; the trapezoidal teeth of the limiting rod slide along the unlocking guide surface of the locking plate, compressing the torsion spring to make the locking plate rotate clockwise.

[0037] The other end of the rotating shaft 7 is provided with a limiting plate 12, and the pressing plate 9 limits the lower end of the limiting plate 12.

[0038] The limiting plate 12 is connected to the first base 5 via the connecting bolt 13 above the rotating shaft 7.

[0039] The limiting rod 11 has a slot on its side wall, and the upper end of the snap-fit ​​plate 8 is snapped into the slot.

[0040] Specifically, the first base is horizontally fixed to the support block. Its side wall has a limit rod insertion hole, and its top has a bolt mounting hole for installing connecting bolts. A rotating shaft horizontally passes through the first base, with one end positioned by a shaft retaining spring, and the other end extending out of the side wall of the first base and fitted with a limit plate. The limit plate is fixed to the top of the first base by connecting bolts, and its lower end forms a vertical movement constraint with the pressing plate. An annular groove is added to the side wall of the limit rod, forming a snap-fit ​​with the upper end of the snap-fit ​​plate. The limit plate restricts the rotation angle of the snap-fit ​​plate, preventing overload deformation of the torsion spring, and also serves as the mounting carrier for the connecting bolts. The connecting bolts fasten the limit plate to the first base, while allowing the limit plate to swing slightly around the bolt axis. A spring washer is placed between the bolt head and the limit plate to prevent loosening. In the locked state, the torsion spring, through its elastic force, keeps the locking plate rotating counterclockwise, with its upper arc-shaped locking head engaging in the annular groove of the limiting rod. The limiting boss of the limiting plate contacts the bottom of the limiting groove of the pressing plate, preventing the locking plate from continuing to rotate counterclockwise and preventing overload of the torsion spring. At this time, the pressing plate is in its highest position, contacting the limiting boss on the side wall of the first base, forming a double rotational limiting. During the unlocking process, external force presses down on the pressing plate, overcoming the torsion spring's elastic force and causing the locking plate to rotate clockwise around the axis. The arc-shaped locking head of the locking plate disengages from the annular groove, and the limiting rod loses its constraint. When the locking plate rotates to the point where the limiting boss of the limiting plate contacts the top of the limiting groove, the rotation stops to prevent plastic deformation of the torsion spring. Pulling the second base horizontally causes the limiting rod to exit from the limiting rod insertion hole, completing the unlocking process.

[0041] During the locking process, align the limiting rod of the second base with the insertion hole of the limiting rod of the first base and push it in horizontally; the annular groove of the limiting rod presses against the arc-shaped locking head of the locking plate, causing the locking plate to rotate clockwise and compress the torsion spring; when the annular groove reaches the position of the arc-shaped locking head, the torsion spring resets, the locking plate rotates counterclockwise, the arc-shaped locking head engages with the annular groove, and at the same time, the limiting boss of the limiting plate contacts the bottom of the limiting groove, confirming the locking.

[0042] The L-shaped plate 3 includes a horizontal section and a vertical section. The horizontal section is connected to the second base 6, and the vertical section is used to form a tongue and groove joint in the wall.

[0043] The support block 4 is a triangular support block. The right-angled side of the triangular support block is connected to the outside of the aluminum template K plate 1, and the other right-angled side of the triangular support block is flush with the upper surface of the aluminum template K plate 1.

[0044] The first base 5 is installed at the outer end of the right-angled side of the triangular support block, which is flush with the aluminum template K plate 1.

[0045] Specifically, the L-shaped panel is integrally formed by a right-angle bending process of horizontal and vertical sections. The length of the horizontal section is 140±0.2mm; the height of the vertical section is 50±0.1mm, and the depth of the tongue and groove joint used to form the wall is 25±0.5mm (meeting the tongue and groove size requirements in the "Technical Standard for Prefabricated Concrete Buildings" GB / T 51231-2016). The horizontal section is connected to the second base with countersunk bolts, and the end of the vertical section has a tongue and groove guide slope to guide the grout filling during concrete pouring and avoid honeycomb defects at the root of the tongue and groove. The triangular support block is a right-angled triangular metal block, with one right-angled side connected to the outer side of the aluminum formwork K panel to form a stable triangular support structure. The first base is a rectangular metal base, installed on the outer end of the right-angled side of the triangular support block and the aluminum formwork K panel, which is flush with the upper surface of the triangular support block, and fixed to the triangular support block 4 with bolts.

[0046] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A wall panel forming apparatus, characterised in that, include: Aluminum formwork K plate (1), said aluminum formwork K plate (1) is installed on the outside of the wall (2) to be poured; L-shaped plate (3), the L-shaped plate (3) is detachably installed above the aluminum formwork K plate (1) and extends to one side of the wall (2) to be poured, for forming a wall tongue and groove, the height of the L-shaped plate (3) and the aluminum formwork K plate (1) is the same as the height of the wall (2); The aluminum formwork K plate (1) is provided with a support block (4) on the side away from the wall, and the L-shaped plate (3) is installed on the support block (4) by a detachable structure.

2. The wall panel forming apparatus of claim 1, wherein The detachable structure includes a first base (5) and a second base (6). The first base (5) is provided with a rotating shaft (7) in the horizontal direction. One end of the rotating shaft (7) is fitted with a snap-fit ​​plate (8). The lower part of the snap-fit ​​plate (8) is a pressing plate (9). A torsion spring (10) connected to the pressing plate (9) is fitted on the rotating shaft (7). A limiting rod (11) is provided laterally at one end of the second base (6). The limiting rod (11) is inserted into the side wall of the first base (5) and engages with the snap-fit ​​plate (8). The first base (5) is mounted on the support block (4), and the second base (6) is mounted on the L-shaped plate (3).

3. The wall panel forming apparatus of claim 2, wherein The other end of the rotating shaft (7) is provided with a limiting plate (12), and the pressing plate (9) limits the lower end of the limiting plate (12).

4. The wall joint forming device according to claim 3, characterized in that, The limiting plate (12) is connected to the first base (5) via the connecting bolt (13) above the rotating shaft (7).

5. The wall joint forming device according to claim 2, characterized in that, The limiting rod (11) has a slot on its side wall, and the upper end of the snap-fit ​​plate (8) is snapped into the slot.

6. The wall joint forming device according to claim 2, characterized in that, The L-shaped plate (3) includes a horizontal section and a vertical section. The horizontal section is connected to the second base (6), and the vertical section is used to form a wall tongue and groove.

7. The wall joint forming device according to claim 2, characterized in that, The support block (4) is a triangular support block. The right-angled side of the triangular support block is connected to the outside of the aluminum template K plate (1), and the other right-angled side of the triangular support block is flush with the upper surface of the aluminum template K plate (1). The first base (5) is installed at the outer end of the right-angled side of the triangular support block and the aluminum template K plate (1).

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