Residential engineering prefabricated floor slab abutted seam grout stopping device

Abstract

The utility model discloses a residential engineering prefabricated floor slab abutted seam grout stopping device, belongs to the technical field of abutted seam grout stopping, and solves the problems in the prior art that after pouring is completed, a connecting piece in an abutted seam grout stopping structure needs to be cut, uneven cutting is easily caused, and the connecting piece which is not cut is difficult to level. The cross-shaped fixing frames are arranged in the length direction of an abutted seam, matched with an adjacent prefabricated floor slab and arranged in a pouring layer poured on the abutted seam and the prefabricated floor slab, the fixing pieces are movably and fixedly matched with the cross-shaped fixing frames, and the grout stopping structure is matched with the fixing pieces to conduct abutted seam sealing grout stopping on the abutted seam. In the abutted seam sealing and grout stopping state, the bottom of the cross-shaped fixing frame makes contact with the grout stopping structure. The grout stopping device is used for grout stopping of abutted seams of prefabricated floor slabs in residential engineering.

Description

Technical Field

[0001] A joint sealing device for precast floor slabs in residential engineering is used to seal joints in precast floor slabs in residential engineering, belonging to the field of joint sealing technology. Background Technology

[0002] The joints in precast floor slabs typically refer to the seams formed when two adjacent precast floor slabs are installed and joined together. In residential construction projects, the treatment of these joints directly affects the structural integrity, waterproofing, and durability.

[0003] CN202220056311.X discloses a prefabricated composite slab joint template structure, including a precast base slab and a cast-in-place composite slab layer located on top of the precast base slab. The precast base slab is equipped with embedded bolts, and a supporting template is located on the bottom surface of the precast base slab, situated at the gap between two precast base slabs. A self-adhesive rubber strip is attached between the supporting template and the precast base slab. The embedded bolts on the precast base slab pass through the supporting template and are connected to nuts, ensuring a tight connection between the supporting template and the bottom of the precast base slab. This invention solves the problem of one-time molding at the joint of composite slabs, avoiding grout leakage, eliminating the need for bottom formwork support, and offering advantages such as simple structure, economical manufacturing, and convenient installation. The components are easy to process in a standardized factory, meeting the requirements of prefabricated green building for structural design and construction. Although joint sealing can be achieved, pre-embedded bolts need to be pre-installed on the precast base plate. This can easily cause deviations between the precast base plate and the pre-embedded bolts after splicing, which can lead to problems such as the inability to install the support formwork. Furthermore, after pouring, it is necessary to cut off the excess pre-embedded bolts on one side of the precast base plate, which can easily cause uneven cutting problems.

[0004] CN202122507496.X discloses a prefabricated composite slab joint sealing structure to solve the technical problem mentioned in the background art, which is that the use of scaffolding members to support composite slabs used for filling gaps results in cumbersome and complex support construction procedures and affects construction efficiency. The structure includes two sealing plates with their surfaces facing each other. Multiple parallel stiffening plates are slidably connected between the two sealing plates, and these stiffening plates can slide back and forth along the same path between the two sealing plates. Both the stiffening plates and the two sealing plates are detachable. A threaded rod passes through the two sealing plates perpendicular to their surfaces and can slide back and forth along its direction of penetration on the sealing plates. A threaded abutment piece is fitted onto the threaded rod and is threadedly connected to it, abutting against one of the sealing plates. This utility model has a simple structure and is mainly used for sealing the joints of composite slabs. Although it can effectively solve the problems caused by pre-embedding, it still requires cutting the screw and threaded rod after pouring, which can easily cause uneven cutting.

[0005] In summary, the existing joint sealing structure has the following technical problems:

[0006] After the pouring is completed, the connectors (screws and / or threaded rods) need to be cut, which can easily lead to uneven cutting and make it difficult to level the uncut connectors. Utility Model Content

[0007] The purpose of this utility model is to provide a grout-stopping device for precast floor slab joints in residential engineering, which solves the problem that in the prior art, after the casting is completed, the connecting parts in the joint grout-stopping structure need to be cut, which easily leads to uneven cutting and makes it difficult to level the uncut connecting parts.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A grout-stopping device for precast floor slab joints in residential engineering includes multiple cross-shaped fixing frames installed along the length of the joint and in conjunction with adjacent precast floor slabs, placed within the joint and the cast-in-place layer on the precast floor slab; fixing components that are movably fixed in conjunction with the cross-shaped fixing frames; and a grout-stopping structure that cooperates with the fixing components to seal the joint and stop grouting.

[0010] When the joint is sealed and grout is stopped, the bottom of the cross-shaped fixing bracket is in contact with the grout-stopping structure.

[0011] Furthermore, the cross-shaped fixing frame includes a limiting plate with threaded holes placed on top of the precast floor slab, a threaded component that is threadedly engaged with the threaded holes on the limiting plate, and limiting nuts on the threaded components on both sides of the limiting plate for rotating and limiting the threaded component and the limiting plate.

[0012] Furthermore, the threaded component includes a screw B that mates with the limiting plate and the limiting nut, and an internal threaded sleeve that is connected to the screw B and has an opening on one side of its bottom.

[0013] Furthermore, the fastener includes a screw A that mates with the threaded component and the grout-stopping structure, and a fixing nut that mates with the screw A to ensure that the grout-stopping structure is tightly fitted to one side of the bottom surface of the adjacent precast floor slab. The screw A mates with the internal thread sleeve in the threaded component.

[0014] Furthermore, a rubber gasket is provided on the open end of the internal threaded sleeve to seal with the grout-stopping structure.

[0015] Furthermore, the feature is that: the bottom of the limiting plate is provided with an elastic sheet that cooperates with the side wall of the adjacent precast floor slab and has an eight-shaped structure.

[0016] Furthermore, the grout-stopping structure includes a grout-stopping plate, mounting holes on the grout-stopping plate that slide in cooperation with screw A, U-shaped grooves on the grout-stopping plates on both sides of the adjacent precast floor slab, an L-shaped groove on the grout-stopping plate on one side of the wall that cooperates with the adjacent precast floor slab that is connected to the U-shaped grooves and has an opening on one side of the wall, and grout-stopping strips in the U-shaped grooves and L-shaped grooves of the grout-stopping plate.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] I. This utility model installs a grout-stopping structure by placing a cross-shaped fixing frame on adjacent precast floor slabs and setting fixing parts on the cross-shaped fixing frame to ensure close contact between the grout-stopping structure and the adjacent precast floor slabs. Under the condition of sealing the joint and stopping the grout, the cross-shaped fixing frame is in contact with the grout-stopping structure, which ensures that the bottom of the cross-shaped fixing frame is at the same level as the bottom of the adjacent precast floor slab. After the pouring is completed, the poured layer (such as the concrete layer) formed on the adjacent precast floor slab will embed the cross-shaped fixing frame. The grout-stopping structure and fixing parts can be removed from the cross-shaped fixing frame for reuse. This effectively avoids the need to cut the connecting parts (screws and / or threaded rods), which can easily cause uneven cutting and make it difficult to level the uncut connecting parts.

[0019] Second, in this utility model, the cross-shaped fixing frame is placed on the cross-shaped fixing frame by the limiting plate to bear the force, and can be engaged with the thread of the limiting plate by the threaded part, so that when the joint is sealed and the grout is stopped, the bottom of the threaded part can be on the same horizontal plane as the bottom of the adjacent precast floor slab, that is, it can contact the grout-stopping structure, so as to avoid the problem that the grout affects the engagement between the fixing part and the threaded part during pouring, which would prevent the fixing part from being unable to be removed later. The position of the limiting plate is limited and fixed by the limiting nut to prevent the position of the limiting plate and the threaded part from changing after adjustment.

[0020] 3. The threaded component of this utility model is designed to be threaded with screw B and limit plate, and to be threaded with fixing component through internal thread sleeve. This is to facilitate adjustment according to the thickness of adjacent precast floor slabs. When the limit plate is placed on the upper surface of the adjacent precast floor slab, the bottom of the internal thread sleeve can be at the same level as the bottom of the adjacent precast floor slab, while ensuring that the fixing component can be easily removed later.

[0021] IV. The fixing component in this utility model includes a screw A that mates with the internal threaded sleeve and a fixing nut that fixes the grout-stopping structure. It is easy to mate with the internal threaded sleeve and the grout-stopping structure and is easy to remove later.

[0022] V. The purpose of setting a rubber gasket on the internal threaded sleeve in this utility model is to prevent grout from entering the internal threaded sleeve during pouring when the joint is sealed and grout is stopped, so as to avoid affecting the subsequent removal of the fasteners.

[0023] VI. In this utility model, an elastic sheet is provided on the limiting plate, which can effectively prevent the cross-shaped fixing frame from rotating, thereby affecting the force on the cross-shaped fixing frame, etc.

[0024] VII. The grout-stopping structure in this utility model can effectively prevent grout leakage by setting U-shaped grooves and L-shaped grooves on the grout-stopping plate and installing grout-stopping strips. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure for sealing the joints of precast floor slabs according to this utility model.

[0027] Figure 2 This is a schematic diagram of the structure of this utility model;

[0028] Figure 3 A schematic diagram of the structure of the cross-shaped fixing frame and the fixing component in this utility model;

[0029] Figure 4 for Figure 3 A schematic diagram of the unfolded shape;

[0030] Figure 5 for Figure 3 A schematic diagram of the unfolded shape;

[0031] Figure 6 This is a schematic diagram illustrating the slurry termination structure of this utility model;

[0032] In the diagram: 1-Precast floor slab, 2-Cross-shaped fixing bracket, 3-Fixing component, 4-Grouting structure, 5-Threaded hole, 6-Limiting plate, 7-Threaded component, 8-Limiting nut, 9-Screw B, 10-Internal threaded sleeve, 11-Screw A, 12-Fixing nut, 13-Elastic sheet, 14-Rubber washer, 15-Grouting plate, 16-Mounting hole, 17-U-shaped groove, 18-L-shaped groove, 19-Grouting strip. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0037] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0040] Example 1

[0041] To address the issue of uneven cutting and difficulty in leveling uncut connectors after precast floor slabs in residential construction projects, where joints are sealed with grout after pouring, it is necessary to cut the connectors (bolts and / or threaded rods). Figure 1-6 As shown, a grout-stopping device for precast floor slab joints in residential engineering is provided, comprising multiple cross-shaped fixing frames 2 disposed along the length of the joint and in the cast-in-place layer of the precast floor slab 1 and the adjacent precast floor slab 1, fixing members 3 that are movably fixed to the cross-shaped fixing frames 2, and a grout-stopping structure 4 that cooperates with the fixing members 3 to seal the joint and stop the grouting; in the joint-sealed and grout-stopped state, the cross-shaped fixing frames 2 are in contact with the grout-stopping structure 4.

[0042] In practice, when the cross-shaped fixing bracket 2 is first placed on the adjacent precast floor slab 1, under the condition of joint sealing and grout stopping (i.e., the grout stopping structure 4 can be in close contact with the bottom of the adjacent precast floor slab 1), the bottom of the cross-shaped fixing bracket 2 can be in contact with the grout stopping structure 4. The cross-shaped fixing bracket 2 can be placed on the adjacent precast floor slab 1 first, and then the part of the fixing component that matches the grout stopping structure 4 can be installed on the cross-shaped fixing bracket (one or more people can cooperate to install it). Alternatively, the cross-shaped fixing bracket 2 can not be placed on the adjacent precast floor slab 1 first, that is, the part of the fixing component that matches the grout stopping structure 4 can be installed on the cross-shaped fixing bracket first, and then the installed structure can be inserted into the joint so that the cross-shaped fixing bracket 2 can be placed on the adjacent precast floor slab 1. Finally, the grout stopping structure 4 is installed on the fixing component, and the remaining part of the fixing component is used to fix the grout stopping structure 4 so that the grout stopping structure 4 can be in close contact with the bottom of the adjacent precast floor slab 1. This embodiment installs a grout-stopping structure in close contact with the adjacent precast floor slabs by placing a cross-shaped fixing frame on the cross-shaped fixing frame and setting fasteners on the cross-shaped fixing frame. Under the condition of sealing the joint and stopping the grout, the cross-shaped fixing frame is in contact with the grout-stopping structure, which ensures that the bottom of the cross-shaped fixing frame is at the same level as the bottom of the adjacent precast floor slab. After the pouring is completed, the poured layer (such as the concrete layer) formed on the adjacent precast floor slab will embed the cross-shaped fixing frame. The grout-stopping structure and fasteners can be removed from the cross-shaped fixing frame for reuse. This effectively avoids the need to cut the connecting parts (screws and / or threaded rods), which can easily cause uneven cutting and make it difficult to level the uncut connecting parts.

[0043] Example 2

[0044] Based on Embodiment 1, the cross-shaped fixing frame 2 includes a limiting plate 6 with threaded holes 5 placed on top of the precast floor slab 1, a threaded component 7 that threadedly engages with the threaded holes 5 on the limiting plate 6, and limiting nuts 8 on the threaded components 7 on both sides of the limiting plate 6 to limit the rotation of the threaded component 7 and the limiting plate 6. The cross-shaped fixing frame is placed on the cross-shaped fixing frame by the limiting plate to bear the force, and the threaded component engages with the threaded limit plate, so that when the joint is sealed and grout is stopped, the bottom of the threaded component can be on the same horizontal plane as the bottom of the adjacent precast floor slab, that is, it can contact the grout-stopping structure. This avoids the problem that the grout will affect the engagement between the fixing component and the threaded component during pouring, which would prevent the fixing component from being unable to be removed later. The limiting nuts limit and fix the position of the limiting plate to prevent the position of the limiting plate and the threaded component from changing after adjustment.

[0045] The threaded component 7 includes a screw B9 that mates with the limiting plate 6 and the limiting nut 8, and an internally threaded sleeve 10 connected to the screw B9 and open on one side of its bottom. The threaded component is defined by the screw B threadedly engaging with the limiting plate and the internally threaded sleeve threadedly engaging with the fixing component. This allows for adjustment based on the thickness of adjacent precast floor slabs. When the limiting plate is placed on the upper surface of the adjacent precast floor slab, the bottom of the internally threaded sleeve is aligned with the bottom of the adjacent precast floor slab, ensuring easy removal of the fixing component later.

[0046] In practice, first rotate the two limiting nuts 8 on the screw B9 to move them away from the limiting plate 6. Then adjust the threaded connection between the limiting plate and the screw B9 so that after the limiting plate is placed on the adjacent precast floor slab 1, the bottom of the inner threaded sleeve 10 is on the same horizontal plane as the bottom of the adjacent precast floor slab. Then adjust the limiting nuts 8 on the screw B9 to move closer to the limiting plate 6 to fix the position of the limiting plate 6.

[0047] The limiting plate 6 can be either square or circular, depending on the specific practical needs.

[0048] Example 3

[0049] Based on Embodiment 2, the fixing component 3 includes a screw A11 that mates with the threaded component 7 and the grout-stopping structure 4, and a fixing nut 12 that mates with the screw A11 to ensure a tight fit between the grout-stopping structure 4 and one side of the bottom surface of the adjacent precast floor slab 1. The screw A11 is threadedly engaged with the internal threaded sleeve 10 in the threaded component 7. The fixing component includes a screw A that mates with the internal threaded sleeve and a fixing nut that fixes the grout-stopping structure. It is easy to mate with the internal threaded sleeve and the grout-stopping structure and is easy to remove later.

[0050] In practice, the cross-shaped fixing bracket 2 can be placed on the adjacent precast floor slab 1, and then the screw rod A11 can be installed on the inner threaded sleeve 10 of the cross-shaped fixing bracket. Alternatively, the cross-shaped fixing bracket 2 can be placed on the adjacent precast floor slab 1 without first placing it on the adjacent precast floor slab 1. That is, the screw rod A11 can be installed on the inner threaded sleeve 10 of the cross-shaped fixing bracket, and then the installed structure can be inserted into the joint so that the cross-shaped fixing bracket 2 can be placed on the adjacent precast floor slab 1. Finally, the grouting structure 4 is installed on the screw rod A11, and the grouting structure 4 is fixed by the fixing nut 12 (when the fixing nut 12 moves upward on the screw rod A11 to push the grouting structure 4 to fix it, the construction worker should hold the screw rod A11 with one hand to avoid the screw rod A11 and the inner threaded sleeve 10 rotating when the fixing nut 12 is rotated). This ensures that the grouting structure 4 can be in close contact with the bottom of the adjacent precast floor slab 1. Otherwise, the grouting structure 4 and the fixing parts can be removed.

[0051] Example 4

[0052] Based on Embodiment 3, a rubber washer 14 is provided on the open end of the internal threaded sleeve 10 to seal and cooperate with the grout-stopping structure 4. The purpose of providing the rubber washer on the internal threaded sleeve is to effectively prevent grout from entering the internal threaded sleeve during pouring when the joint is sealed and grout-stopped, thus preventing it from affecting the subsequent removal of the fixing components.

[0053] Example 5

[0054] Based on embodiment 4, the bottom of the limiting plate 6 is provided with an elastic piece 13 that cooperates with the side wall of the adjacent precast floor slab 1 and has an eight-shaped structure. The elastic piece on the limiting plate can effectively prevent the cross-shaped fixing frame from rotating, thereby affecting the force on the cross-shaped fixing frame or causing the limiting plate to fall into the joint.

[0055] Example 6

[0056] Based on Embodiment 5, the grout-stopping structure 4 includes a grout-stopping plate 15, mounting holes 16 on the grout-stopping plate 15 that slide in conjunction with the screw A11, U-shaped grooves 17 on the grout-stopping plates 15 on both sides of the adjacent precast floor slab 1, an L-shaped groove 18 on the grout-stopping plate 15 on the side of the wall that cooperates with the adjacent precast floor slab 1, which communicates with the U-shaped grooves 17 and is open on one side of the wall, and grout-stopping strips 19 in the U-shaped grooves 17 and L-shaped grooves 18 of the grout-stopping plate 15. The grout-stopping structure effectively prevents grout leakage by providing U-shaped grooves and L-shaped grooves on the grout-stopping plate and installing grout-stopping strips.

[0057] In practice, the mounting hole 16 is inserted through the screw A11, and the fixing nut 12 is moved upward on the screw A11 to push the fixing grout-stopping structure 4 so that the grout-stopping structure 4 can be in close contact with the bottom of the adjacent precast floor slab 1. Otherwise, it is removed.

Claims

1. A grout-stopping device for precast floor slab joints in residential engineering, characterized in that: It includes multiple cross-shaped fixing frames (2) set in the longitudinal direction of the joint and in the casting layer cast on the joint and the precast floor slab (1) to cooperate with the adjacent precast floor slab (1), fixing parts (3) that cooperate with the cross-shaped fixing frames (2) to fix them in place, and a grout-stopping structure (4) that cooperates with the fixing parts (3) to seal the joint and stop the grouting. When the joint is sealed and grout is stopped, the bottom of the cross-shaped fixing bracket (2) is in contact with the grout-stopping structure (4).

2. The grout-stopping device for precast floor slab joints in residential engineering according to claim 1, characterized in that: The cross-shaped fixing frame (2) includes a limiting plate (6) with a threaded hole (5) placed on the top of the precast floor slab (1), a threaded part (7) that is threaded to the threaded hole (5) on the limiting plate (6), and a limiting nut (8) on the threaded part (7) on both sides of the limiting plate (6) to limit the rotation of the threaded part (7) and the limiting plate (6).

3. A grout-stopping device for precast floor slab joints in residential engineering according to claim 2, characterized in that: The threaded component (7) includes a screw B (9) that mates with the limiting plate (6) and the limiting nut (8), and an internal threaded sleeve (10) that is connected to the screw B (9) and has an opening on one side of its bottom.

4. A grout-stopping device for precast floor slab joints in residential engineering according to claim 3, characterized in that: The fastener (3) includes a screw A (11) that cooperates with the threaded part (7) and the grout-stopping structure (4), a fixing nut (12) that cooperates with the screw A (11) to make the grout-stopping structure (4) fit tightly against one side of the bottom surface of the adjacent precast floor slab (1), and the screw A (11) is threadedly engaged with the internal threaded sleeve (10) in the threaded part (7).

5. A grout-stopping device for precast floor slab joints in residential engineering according to claim 4, characterized in that: A rubber gasket (14) is provided on the open end of the internal threaded sleeve (10) to seal with the grout-stopping structure (4).

6. A grout-stopping device for precast floor slab joints in residential engineering according to any one of claims 2-5, characterized in that: The bottom of the limiting plate (6) is provided with an elastic sheet (13) that cooperates with the side wall of the adjacent precast floor slab (1) and has an eight-shaped structure.

7. A grout-stopping device for precast floor slab joints in residential engineering according to claim 6, characterized in that: The grout-stopping structure (4) includes a grout-stopping plate (15), an installation hole (16) provided on the grout-stopping plate (15) that slides and engages with the screw A (11), a U-shaped groove (17) provided on the grout-stopping plates (15) on both sides of the adjacent precast floor slab (1), an L-shaped groove (18) provided on the grout-stopping plate (15) on one side of the wall that engages with the adjacent precast floor slab (1) that communicates with the U-shaped groove (17) and is open on one side of the wall, and a grout-stopping strip (19) provided in the U-shaped groove (17) and L-shaped groove (18) of the grout-stopping plate (15).

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