Detachable boundary lattice bar for roof

Abstract

The utility model discloses a detachable boundary lattice bar for a roof, belongs to the technical field of building construction, and aims to solve the problems that a waterproof layer is easy to damage, a boundary lattice is not straight, a formwork is difficult to detach and the like in roof boundary lattice joint construction in the prior art. The device comprises a detachable core structure and a permanent embedded sleeve, during construction, the core structure is arranged in the embedded sleeve and arranged on a roof in advance before concrete is poured, after the concrete is solidified, the core structure is taken out, the embedded sleeve is permanently reserved in the concrete, and a regular crack pouring channel is formed. The core structure adopts a trapezoidal section with a wide top and a narrow bottom and is convenient to disassemble; an anchoring part is arranged on the outer wall of the pre-embedded sleeve so as to guarantee firm combination of the pre-embedded sleeve and concrete. According to the utility model, the damage to the waterproof layer is avoided, the straightness and attractiveness of the boundary lattice joint are ensured, the construction efficiency is obviously improved, the labor cost is reduced, and the core structure can be repeatedly used, so that the core structure has obvious beneficial effects.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a detachable roof grid strip. Background Technology

[0002] Roofing is a major part of decoration and renovation. Roof cracking is a major issue affecting the waterproofing performance, appearance quality, and durability of the roof. The quality of the roofing mesh is one of the key factors affecting roof cracking.

[0003] Traditional structural grid strips generally have three methods of implementation:

[0004] One approach is to use the post-cutting method, which involves opening the crack after the roof surface layer has been poured and reached a certain strength. This method is prone to damaging the roof waterproof layer during cutting, causing potential leakage problems later. In addition, the thickness of the saw blade is limited, the width of the crack is limited, the construction is more difficult, and the cutting slurry is prone to contaminating the surface layer.

[0005] Secondly, using materials such as extruded polystyrene boards for pre-reservation can easily result in uneven grid seams, affecting the appearance, and is also quite troublesome to remove.

[0006] Third, brick strips are pre-installed on both sides of the grid joint. Although this method is aesthetically pleasing, it is more expensive and the brick strips are prone to cracking later.

[0007] Therefore, there is an urgent need for a device that is low in cost, highly prefabricated, precise and reliable, easy to construct, and capable of efficiently and safely dividing roof sections. Utility Model Content

[0008] To address the aforementioned shortcomings of existing technologies, this utility model provides a detachable roof grid strip to enable rapid roof grid creation, effectively improve the quality of roof grids, and avoid the problems of easily damaging the roof waterproof layer, leaking grout and polluting the roof, uneven grids, difficulty in disassembly, and cracking of grid tiles during traditional roof grid cutting methods.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A removable roof grid strip, wherein the roof is provided with a waterproof layer, an isolation layer, and a post-poured concrete layer from top to bottom, characterized in that it includes:

[0011] The core structure, made of a rigid material, is used to occupy the space of the grid joints when the post-concrete layer is poured.

[0012] An embedded sleeve, made of rigid material, has an internal channel for accommodating the core structure and a top opening communicating with the internal channel, and the upper edge of the top opening is not lower than the upper surface of the post-cast concrete layer. The embedded sleeve is configured to be fixed to the isolation layer before the isolation layer is fully cured and to be permanently embedded in the post-cast concrete layer after the concrete has cured.

[0013] The core structure is configured to be removed from the embedded sleeve after the post-cast concrete layer has cured, thereby leaving a channel in the post-cast concrete layer defined by the embedded sleeve for forming a grid joint.

[0014] Furthermore, the core structure includes:

[0015] Cross-shaped boundary strips consist of horizontal and vertical boundary strips that are distributed in a cross shape and interlocked. The two horizontal and two vertical boundary strips of two adjacent sets of cross-shaped boundary strips are detachably and fixedly connected by connectors, or the two horizontal and two vertical boundary strips of two adjacent sets of cross-shaped boundary strips are detachably and fixedly connected by connecting strips and connectors.

[0016] The embedded sleeve includes:

[0017] The cross-shaped grid sleeve has a cross-shaped groove on its upper end for engaging with the connection between the horizontal and vertical grid strips.

[0018] The connecting grid sleeve is installed below the horizontal grid strip, the vertical grid strip, the connecting grid strip, and the connector, and the connecting grid sleeve on the cross grid strip is located outside the cross grid sleeve.

[0019] Furthermore, each of the transverse grid strip, the longitudinal grid strip, and the connecting grid strip has a concave interface at both ends along its length. The concave interface has a fixing hole that extends through its width. The connector has convex blocks at both ends along its length that mate with the concave interface. The convex blocks have snap-fit ​​blocks on both sides that mate with the fixing holes for fixation.

[0020] Furthermore, the core structure has a trapezoidal cross-section, with the top surface length being greater than the bottom surface length.

[0021] Furthermore, the outer surface of the pre-embedded sleeve is provided with anchors for fixing to the isolation layer, and multiple sets of anchors are provided at intervals along the length direction of the pre-embedded sleeve.

[0022] Furthermore, the method also includes a steel mesh, which is disposed above the isolation layer.

[0023] Furthermore, the transverse boundary strips, longitudinal boundary strips, and connecting boundary strips are all made of fiberglass, while the cross-shaped boundary sleeves and connecting boundary sleeves are all made of rigid plastic.

[0024] Furthermore, the connector is made of hard rubber material.

[0025] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0026] 1. This utility model adopts the method of pre-embedding and then removing the core to form the grid joint. The entire construction process does not require any cutting operations on the formed roof surface, which fundamentally avoids the physical damage to the roof waterproof layer caused by the post-cutting method and eliminates the hidden danger of leakage. Moreover, the core structure is made of rigid materials, which can ensure that the grid joint space remains stable and straight when pouring concrete, and is easy to remove. After the core structure is removed, the pre-embedded sleeve provides a regular and clean base trench for the subsequent grouting process, making the filling of grouting material convenient and the construction efficiency high.

[0027] 2. The cross-shaped grid strips can be detachably and fixedly connected to the grid strips by selecting different lengths of connecting grid strips and connecting parts, which can adapt to different grid spacing sizes;

[0028] 3. The cross-shaped boundary strips are connected by interlocking horizontal and vertical boundary strips, and the cross-shaped boundary strip sleeve at the lower end of the intersection can ensure the stability of the boundary seam intersection.

[0029] 4. The outer surface of the pre-embedded sleeve can be fixedly connected to the uncured isolation layer and the post-poured concrete layer by setting anchors. The anchors can form a firm mechanical interlock with the surrounding concrete, ensuring that the pre-embedded sleeve will not loosen or shift during long-term use on the roof. This provides a stable and durable adhesion surface for the grouting material in the joint, preventing the grouting material from falling off or cracking due to an unstable base layer.

[0030] 5. The core structure adopts a trapezoidal cross-section design that is wider at the top and narrower at the bottom. After the concrete has cured, the draft angle makes the core structure very easy to remove, which facilitates the subsequent grouting process.

[0031] 6. The steel mesh installed below the grid joint can effectively resist and disperse the shrinkage stress of the concrete, reduce the risk of micro-cracks in the concrete on both sides of the grid joint, and further enhance the durability of the roof.

[0032] 7. The core structure (grid strips and connectors) can be completely removed after one construction, and can be reused after cleaning, which significantly reduces the material cost per use and reduces the generation of construction waste. Moreover, there is no cutting dust or mud pollution during the entire construction process. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 A schematic diagram of the connection structure between the cross-shaped grid strips and the cross-shaped grid sleeve;

[0036] Figure 3 The three views are of the horizontal grid strips;

[0037] Figure 4 To connect the three views of the grid strip;

[0038] Figure 5 Here are the three views of the connector;

[0039] Figure 6 Set the three views over the cross-shaped grid;

[0040] Figure 7 Connect the grid lines to the three-view drawing;

[0041] Figure 8 A top view of the cross-shaped grid strip after the cross-shaped grid sleeve has been installed and the steel mesh has been installed.

[0042] Figure 9 A sectional view of the connecting grid strip after the connecting grid sleeve has been installed and fixed on the roof.

[0043] Figure 10 for Figure 9 A schematic diagram showing the process of injecting grout after removing the connecting grid strip.

[0044] in:

[0045] 1-Cross-shaped dividing strip, 2-Horizontal dividing strip, 3-Longitudinal dividing strip, 4-Connecting dividing strip, 5-Connector, 6-Cross-shaped dividing sleeve, 7-Connecting dividing sleeve, 8-Concave interface, 9-Fixing hole, 10-Snap-fit ​​groove, 11-Protruding block, 12-Snap-fit ​​block, 13-Cross-shaped groove, 14-Anchor, 15-Waterproof layer, 16-Isolation layer, 17-Post-poured concrete layer, 18-Reinforcing mesh, 19-Grouting material. Detailed Implementation

[0046] 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, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0047] like Figures 1-10 As shown, this utility model provides a detachable roof grid strip, which mainly consists of two parts: a detachable core structure that needs to be removed after the concrete has cured, and a pre-embedded sleeve that is permanently embedded in the concrete.

[0048] Detachable core structure such as Figures 1-5 As shown, it includes cross-shaped boundary strips 1, connecting boundary strips 4, and connectors 5. The cross-shaped boundary strips 1 are located at the cross intersection of the boundary strips and consist of transverse boundary strips 2 and longitudinal boundary strips 3 arranged in a cross pattern. The transverse boundary strips 2 are as follows... Figure 3 As shown, a snap-fit ​​groove 10 is provided at the middle position of its upper end face. The depth of the snap-fit ​​groove 10 is half the thickness of the transverse grid strip 2, while the snap-fit ​​groove on the longitudinal grid strip 3 is provided at the middle position of its lower end face. The two are snapped together by the snap-fit ​​groove 10, and in the snap-fit ​​state, the upper end face of the longitudinal grid strip 3 is flush with the upper end face of the transverse grid strip 2; the transverse grid strip 2, the longitudinal grid strip 3, and the connecting grid strip 4 are all provided with concave interfaces 8 at both ends in the length direction and fixing holes 9 distributed through the concave interfaces 8 in the width direction; the connecting piece 5 is as follows Figure 5 As shown, protruding blocks 11 are provided at both ends in the length direction, and snap-fit ​​blocks 12 are fixedly connected to both ends in the width direction of the protruding blocks 11. After the protruding blocks 11 extend into the concave interface 8, the snap-fit ​​blocks 12 are snapped and connected to the fixing holes 9, thereby fixing one end of the connector 5 to the end of the horizontal grid strip 2, the vertical grid strip 3, or the connecting grid strip 4. It should be noted that two adjacent sets of cross grid strips 1 can be directly connected to two adjacent horizontal grid strips 2 and two adjacent vertical grid strips 3 through the connector 5. Alternatively, the connector 5 can be installed at both ends of the connecting grid strip 4 and then connected to two adjacent horizontal grid strips 2 and two adjacent vertical grid strips 3. Whether to use the connecting grid strip 4 and the selection of the length of the connecting grid strip 4 can be determined according to the size of the grid seam.

[0049] In this embodiment, the cross-shaped grid strip 1, the connecting grid strip 4, and the connector 5 all have trapezoidal cross-sections, with the top surface length greater than the bottom surface length. The design of being larger at the top and smaller at the bottom ensures that the grid strips can be removed in time after the concrete is poured, facilitating subsequent grouting. The cross-shaped grid strip 1 and the connecting grid strip 4 are made of fiberglass, and the rigid material ensures that the grid joints are straight and have a consistent width. The connector 5 is made of hard rubber, so that the locking block 12 at the end of the connector 5 can be deformed to a certain extent and then locked and fixed with the fixing hole 9.

[0050] The embedded sleeve has a channel inside, the shape of which matches the trapezoidal cross-section of the core structure, allowing it to fit tightly around the outside of the core structure. The top has a through opening to facilitate the insertion and removal of the core structure, and the height of the upper end is designed to be flush with or slightly higher than the post-poured concrete layer 17.

[0051] Specifically, the pre-embedded sleeve includes a cross-shaped grid sleeve 6 and a connecting grid sleeve 7, such as the cross-shaped grid sleeve 6... Figure 6 As shown, its cross-section is the same as that at the intersection of the cross-shaped grid strip 1, both being trapezoidal, with the top surface length greater than the bottom surface and an open top. The internal through hole of the cross-shaped grid sleeve 6 is set as a cross-shaped groove 13, the depth of which is equal to the thickness at the intersection of the cross-shaped grid strip 1. The cross-shaped grid sleeve 6 is engaged with the cross-shaped grid strip 1 below through the cross-shaped groove 13 to fix the position of the intersection point and prevent the cross-shaped grid strip 1 from shifting during construction. Moreover, in the installed state, the upper end face of the cross-shaped grid strip 1 is flush with the cross-shaped grid sleeve 6; the connecting grid sleeve 7 is as follows: Figure 7 As shown, it has a trapezoidal shell structure with no top cover. The internal channel also matches the trapezoidal shape of the transverse grid strip 2, the longitudinal grid strip 3 and the connecting grid strip 4. The connecting grid sleeve 7 is installed below the outer surface of the outer part of the transverse grid strip 2 and the longitudinal grid strip 3 located outside the cross grid sleeve 6, and the connecting grid sleeve 7 and the cross grid sleeve 6 form a continuous internal channel.

[0052] In this embodiment, the connecting grid sleeve 7 is made of rigid plastic. Anchors 14 are provided on the front and rear sides and the lower end face of the connecting grid sleeve 7. Multiple sets of anchors 14 are evenly distributed along the length direction of the connecting grid sleeve 7. When the isolation layer 16 is not completely cured, the connecting grid sleeve 7 can be fixed above the isolation layer 16 by the anchors 14. Moreover, the setting of the anchors 14 can further improve the firmness of the bond between the connecting grid sleeve 7 and the post-poured concrete layer 17 when pouring concrete.

[0053] In addition, the device also includes a steel mesh 18, which is laid on the upper surface of the isolation layer 16. The steel mesh 18 extends ≥200mm on both sides in the width direction of the grid strip. It should be noted that the anchor 14 on the lower surface of the grid sleeve 7 passes through the steel mesh 18 from top to bottom and is fixed to the isolation layer 16. The steel mesh 18 can reduce the expansion and contraction of the concrete on both sides of the grid and ensure the durability of the grid joint after construction.

[0054] The specific steps involved in the construction of this device are as follows:

[0055] S1. Arrange the roof isolation layer 16, confirm the size and installation position of the grid strips, and make precise lines;

[0056] Before the roof surface concrete is poured, when the isolation layer 16 on the roof waterproof layer 15 is completed but not completely solidified, the grid layout is determined and the lines are laid out.

[0057] S2. First, clean the isolation layer 16. According to the layout, place the steel mesh 18 at the grid joint installation position. The steel mesh 18 extends out of the horizontal grid strip 2, the longitudinal grid strip 3 and the connecting grid strip 4 on both sides in the width direction, with a width of ≥200mm on each side. Interlock the horizontal grid strip 2 and the longitudinal grid strip 3 into a cross shape. Install the cross grid sleeve 6 at the bottom of the interlocking position. Install the connecting grid sleeve 7 below the horizontal grid strip 2 and the longitudinal grid strip 3 located outside the cross grid sleeve 6. Use a rubber mallet to hammer the structure firmly onto the isolation layer 16 according to the layout position, so that its bottom is tightly bonded to the isolation layer 16 which has not yet fully solidified. The upper elevation is controlled to be flush with the upper surface of the post-poured concrete layer 17.

[0058] S3. Based on the actual layout of the grid seams, determine whether to use the connecting grid strip 4 and the length of the connecting grid strip 4;

[0059] When two adjacent sets of cross-shaped boundary strips 1 are directly connected by connectors 5, the two transverse boundary strips 2 or the two longitudinal boundary strips 3 of the two adjacent sets of cross-shaped boundary strips 1 are connected by connectors 5. When two adjacent sets of cross-shaped boundary strips 1 need to be connected by connecting boundary strips 4, firstly, connectors 5 are installed at both ends of the length direction of the connecting boundary strip 4, and connecting boundary sleeves 7 are fitted on the outside of both. The connecting boundary strip 4 is connected to the two transverse boundary strips 2 or the two longitudinal boundary strips 3 of the two adjacent sets of cross-shaped boundary strips 1 by connectors 5. After connection, use a rubber mallet to hammer the connecting boundary strip 4 fitted with the connecting boundary sleeve 7 onto the isolation layer 16 according to the layout position, so that the anchor 14 at the lower end of the connecting boundary sleeve 7 is fixed to the not fully cured isolation layer 16. The upper elevation is controlled to be flush with the upper surface of the post-poured concrete layer 17. Repeat the above process until the layout of all boundary strips is completed, forming a complete boundary strip network.

[0060] S4. Pour roof concrete above the grid strips. The connecting grid sleeve 7 is fixed to the post-poured concrete layer 17 by the anchors 14 on the front and rear sides, which can further improve the stability of the connecting grid sleeve 7. After the strength of the post-poured concrete layer 17 meets the requirements, remove the cross grid strip 1 and the connecting grid strip 4 from the cross grid sleeve 6 and the connecting grid sleeve 7. Use the grouting material 19 to grout the cross grid sleeve 6 and the connecting grid sleeve 7. The grouting material 19 can be silicone weather-resistant sealant, polyurethane sealant or modified asphalt sealant.

[0061] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A detachable roof grid strip, wherein the roof is provided with a waterproof layer, an isolation layer, and a post-poured concrete layer from top to bottom, characterized in that, include: The core structure, made of a rigid material, is used to occupy the space of the grid joints when the post-concrete layer is poured. An embedded sleeve, made of rigid material, has an internal channel for accommodating the core structure and a top opening communicating with the internal channel, and the upper edge of the top opening is not lower than the upper surface of the post-cast concrete layer. The embedded sleeve is configured to be fixed to the isolation layer before the isolation layer is fully cured and to be permanently embedded in the post-cast concrete layer after the concrete has cured. The core structure is configured to be removed from the embedded sleeve after the post-cast concrete layer has cured, thereby leaving a channel in the post-cast concrete layer defined by the embedded sleeve for forming a grid joint.

2. The detachable roof grid strip according to claim 1, characterized in that, The core structure includes: Cross-shaped boundary strips consist of horizontal and vertical boundary strips that are distributed in a cross shape and interlocked. The two horizontal and two vertical boundary strips of two adjacent sets of cross-shaped boundary strips are detachably and fixedly connected by connectors, or the two horizontal and two vertical boundary strips of two adjacent sets of cross-shaped boundary strips are detachably and fixedly connected by connecting strips and connectors. The embedded sleeve includes: The cross-shaped grid sleeve has a cross-shaped groove on its upper end for engaging with the connection between the horizontal and vertical grid strips. The connecting grid sleeve is installed below the horizontal grid strip, the vertical grid strip, the connecting grid strip, and the connector, and the connecting grid sleeve on the cross grid strip is located outside the cross grid sleeve.

3. The detachable roof grid strip according to claim 2, characterized in that, The transverse boundary strip, the longitudinal boundary strip, and the connecting boundary strip are all provided with concave interfaces at both ends of their length direction. Each concave interface is provided with a fixing hole that runs through its width direction. Each connector is provided with a convex block that mates with the concave interface at both ends of its length direction. Each convex block is provided with a snap-fit ​​block that mates with the fixing hole on both sides of its side.

4. The detachable roof grid strip according to claim 1, characterized in that, The core structure has a trapezoidal cross-section, with the top surface being longer than the bottom surface.

5. The detachable roof grid strip according to claim 1, characterized in that, The outer surface of the pre-embedded sleeve is provided with anchors for fixing to the isolation layer, and multiple sets of anchors are provided at intervals along the length of the pre-embedded sleeve.

6. The detachable roof grid strip according to claim 1, characterized in that, It also includes a steel mesh, which is disposed above the isolation layer.

7. The detachable roof grid strip according to claim 2, characterized in that, The horizontal boundary strips, vertical boundary strips, and connecting boundary strips are all made of fiberglass, while the cross-shaped boundary sleeves and connecting boundary sleeves are all made of rigid plastic.

8. The detachable roof grid strip according to claim 2, characterized in that, The connector is made of hard rubber material.

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