Opposite-pulling connecting assembly and plywood building formwork system

Abstract

The utility model provides an opposite-pulling connecting assembly and a plywood building template system, and relates to the technical field of building, the opposite-pulling connecting assembly comprises an opposite-pulling screw rod and a combined nut, the combined nut comprises a screw sleeve provided with internal threads, a screw head used for dismounting and mounting, and a hanging column connected between the screw sleeve and the screw head, the thread sleeve is connected to the end part of the opposite-pulling lead screw through an internal thread; the opposite-pulling connecting assembly further comprises a reinforcing rib, a clamping hook and a chuck. The plywood building formwork system comprises a reinforcement cage, a plywood formwork and the opposite-pulling connecting assembly. By means of the opposite-pull connecting assembly, the opposite-pull thread structure and the hanging structure are combined, the installation stability of a plywood formwork building system can be effectively guaranteed, the wall pouring quality is improved, the plywood formwork is convenient to disassemble and assemble, the construction efficiency is high, meanwhile, the combined nut can be repeatedly used, and the construction cost is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a tension connection component and a plywood building template system. Background Art

[0002] Plywood formwork is a material used as a temporary supporting structure in construction projects. It is widely used in construction sites due to its advantages such as fast construction, lightness and flexibility.

[0003] The existing plywood formwork construction system uses narrow plywood strips as the formwork for concrete projects. The plywood strips on both sides of the steel cage are tied together by a one-time special tie screw. After the formwork is reinforced and corrected, concrete is poured into the steel cage. After the concrete solidifies, the wall is formed. When dismantling, the head of the tie screw is twisted off by a special tool, and then the plywood strips can be removed to complete the concrete construction. The existing one-time tie screw is used to tie the plywood strips. Not only is the installation not stable enough, but also after the wall is formed, a special tool needs to be used to twist off the exposed part of the tie screw, which is troublesome to operate, has low work efficiency, and high construction cost. Utility Model Content

[0004] The purpose of the utility model is to provide a tension connection assembly and a plywood building formwork system to solve the above-mentioned technical problems existing in the prior art; the preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects; see the following description for details.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a tension connection assembly, comprising a tension rod and a combination nut, wherein the combination nut comprises a threaded sleeve provided with an internal thread, a screw head for disassembly and assembly, and a hanging column connected between the threaded sleeve and the screw head, and the threaded sleeve is connected to the end of the tension rod through the internal thread.

[0007] Preferably, the tension connection assembly comprises a reinforcing rib, both ends of the reinforcing rib are provided with hanging grooves, and the hanging column can be hung in the hanging grooves.

[0008] Preferably, the reinforcing ribs are provided with fixing bolts for connecting the template.

[0009] Preferably, a rotating shaft is provided at one end of the reinforcing rib, and a clamping shaft is provided at the other end of the reinforcing rib; the pulling connection assembly includes a hook, and a mounting hole, a first hanging groove and a second hanging groove are sequentially provided on the hook, and the hook can be rotatably installed on the rotating shaft corresponding to the reinforcing rib through the mounting hole, the first hanging groove is used to hang the hanging column corresponding to the combination nut, and the second hanging groove is used to hang the clamping shaft corresponding to the reinforcing rib.

[0010] Preferably, the tension connection assembly comprises a chuck, which is threadedly connected to the tension rod and is used to limit the position of the insulation board.

[0011] The utility model provides a plywood building template system, comprising a steel bar cage, a plywood template and any one of the above-mentioned pull-connection components.

[0012] Preferably, the plywood formwork is arranged opposite to each other on both sides of the steel cage; the ends of the drawing rod pass through the steel cage, and the threaded sleeve of the combination nut passes through the plywood formwork and is threadedly connected to the ends of the drawing rod.

[0013] Preferably, the plywood building formwork system includes an insulation board, and the insulation board, the steel cage and the plywood formwork are arranged in sequence; the first end of the drawing rod is threadedly connected with a chuck, and the chuck abuts against the side of the insulation board away from the steel cage, the second end of the drawing rod passes through the insulation board and the steel cage in sequence, and the threaded sleeve of the combination nut passes through the plywood formwork and is threadedly connected to the second end of the drawing rod.

[0014] Preferably, the plywood building formwork system includes an insulation board, and the steel cage and the plywood formwork are sequentially arranged on both sides of the insulation board in a direction away from the insulation board; the ends of the drawing rods pass through the insulation board and the corresponding steel cages in sequence, and the threaded sleeves of the combination nuts pass through the corresponding plywood formworks and are threadedly connected to the ends of the corresponding drawing rods; two chucks are threadedly connected to the drawing rods, and the two chucks press against the two sides of the insulation board.

[0015] The utility model provides a pull connection assembly and a plywood building template system having at least the following features:

[0016] Beneficial effects:

[0017] The tension connection assembly comprises a tension rod and a combination nut, which cooperate with each other and are used for tension installation of plywood formwork in a plywood formwork system.

[0018] The combination nut comprises a screw sleeve with an internal thread, a screw head for disassembly and assembly, and a hanging column connected between the screw sleeve and the screw head. During construction, the plywood formwork is placed on one side of the steel cage, the wire drawing rod is passed through the steel cage, the combination nut is passed through the plywood formwork, and then the end of the wire drawing rod is threadedly connected to the combination nut, and the reinforcing ribs or hooks on the plywood formwork are hung on the hanging column of the combination nut, so that the installation of the plywood building formwork system can be realized. After the installation is completed, concrete is poured into the steel cage. After the wall is formed, the combination nut is first removed, and then the plywood formwork is removed, and the wire drawing rod is left in the wall. The wall casting is completed. Similarly, a wall with an insulation board can also be cast by adopting the above-mentioned method through the tension connection assembly, so that the wire drawing rod passes through the steel cage and the insulation board and is connected to the chuck, and the other end is connected to the plywood formwork by a hanging method. Not only can the plywood formwork be stably installed to ensure the wall casting effect, but also the disassembly and assembly are convenient, and the combination nut can be reused.

[0019] The utility model adopts the pull connection component combined with the pull thread structure and the hanging structure, which can not only effectively ensure the installation stability of the plywood formwork construction system and improve the wall casting quality, but also make the plywood formwork easy to disassemble and assemble, and the construction efficiency is high. At the same time, the combined nut can be reused to ensure the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the drawing rod and the combined nut of the utility model;

[0022] Figure 2 This is a structural schematic diagram of an implementation scheme of a pull-to-connect assembly of the utility model;

[0023] Figure 3 It is an enlarged view of the A part of the utility model;

[0024] Figure 4 This is an enlarged view of part B of the utility model

[0025] Figure 5 It is a structural schematic diagram of an embodiment of the utility model for a drawing rod, a nut and a chuck;

[0026] Figure 6 This is a structural schematic diagram of another embodiment of the utility model for the drawing rod, nut and chuck

[0027] Figure 7 It is a structural schematic diagram of the utility model's building formwork system without insulation board;

[0028] Figure 8 It is a structural schematic diagram of the utility model single-sided plywood insulation board;

[0029] Fig. 9 It is a structural schematic diagram of a double-sided plywood sandwich insulation board of the utility model.

[0030] Reference numerals

[0031] 1. Drawing rod; 2. Combination nut; 21. Screw sleeve; 22. Hanging column; 23. Screw head; 3. Reinforcing rib; 31. Hanging groove; 32. Fixing bolt; 33. Clamping shaft; 34. Rotating shaft; 4. Hook; 41. Mounting hole; 42. First hanging groove; 43. Second hanging groove; 5. Chuck; 6. Plywood template; 7. Insulation board. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0033] Embodiment 1:

[0034] The utility model provides a pull connection assembly, such as Figures 1 to 6 As shown, the tension connection assembly includes a tension rod 1 and a combination nut 2.

[0035] The combination nut 2 includes an integrally arranged screw sleeve 21, a hanging column 22 and a screw head 23. The screw sleeve 21, the hanging column 22 and the screw head 23 are arranged in sequence. The screw sleeve 21 is provided with an internal thread. The screw head 23 is set as a hexagonal screw head for disassembly and assembly. The diameter of the hanging column 22 is smaller than the diameter of the screw sleeve 21 and is used for hanging.

[0036] During construction, place the plywood formwork on one side of the steel cage, pass the tension rod 1 through the steel cage, and pass the combination nut 2 through the plywood formwork. Then connect the tension rod 1 and the combination nut 2, and hang the reinforcing ribs and hooks on the plywood formwork with the corresponding combination nut 2. The installation is completed and the wall can be poured.

[0037] When the wall casting can be removed from the formwork, loosen the combination nut 2, disconnect the hook, rotate the combination nut 2, remove the plywood formwork and collect the combination nut 2 for next use, and leave the wire rod 1 in the wall.

[0038] In the above process, the combined nut 2 having the threaded sleeve 21, the hanging column 22 and the screw head 23 cooperates with the tensioning rod 1 to combine the tensioning screw rod structure with the hanging structure. This not only effectively ensures the installation stability of the plywood formwork and the wall casting effect is remarkable, but also makes the plywood formwork easy to disassemble and assemble, and the construction efficiency is high. At the same time, the combined nut 2 can be reused to ensure the construction cost.

[0039] As an optional implementation, the tension connection assembly includes a reinforcing rib 3 , and both ends of the reinforcing rib 3 are provided with hanging grooves 31 , and the hanging grooves 31 are adapted to the hanging columns 22 .

[0040] During the construction process, when the assembly nut 2 is installed, the assembly nut 2 located at the edge has its hanging column 22 hung in the hanging groove 31 .

[0041] The hanging method is adopted to facilitate the disassembly and assembly of the plywood formwork.

[0042] As an optional embodiment, fixing bolts 32 for connecting the template are provided on the reinforcing rib 3.

[0043] In actual application, the reinforcing rib 3 and the template are fixed together by fixing bolts 32 before leaving the factory, so that the template and the reinforcing rib 3 become a whole. In this way, no assembly is required during on-site construction, which can effectively simplify the on-site construction steps and improve construction efficiency.

[0044] The reinforcing rib 3 is a steel part, which is cut to specified specifications by laser or punched by a special metal mold. The reinforcing rib 3 is a pulling point for tensioning, which can improve the rigidity of the plywood template 6, improve the ability to resist lateral pressure, and its installation stability.

[0045] As an optional implementation, a rotating shaft 34 is provided at one end of the reinforcing rib 3 , and a clamping shaft 33 is provided at the other end of the reinforcing rib 3 .

[0046] The pull connection assembly comprises a hook 4 , on which a mounting hole 41 , a first hanging groove 42 and a second hanging groove 43 are sequentially arranged, and the mounting hole 41 is arranged as an oblong hole.

[0047] When two adjacent reinforcing ribs 3 located on the same horizontal plane are connected, the hook 4 of the rear reinforcing rib 3 rotates around the rotating axis 34 through the mounting hole 41, so that the second hanging groove 43 of the hook 4 is hooked together with the hooking axis 33 of the previous reinforcing rib 3, and at the same time, the first hanging groove 42 of the hook 4 is hooked with the hanging column 22, completing the connection between the two adjacent templates.

[0048] In this way, the hook 4 hooks the combination nut 2 and the reinforcing rib 3 at the same time, and the hooking is firm.

[0049] When the reinforcing rib 3 located at the edge is connected to the combination nut 2 , the hanging column 22 of the combination nut 2 is hung in the hanging groove 31 at the corresponding end of the reinforcing rib 3 .

[0050] When the hook 4 located at the edge is connected to the combination nut 2 , the hanging column 22 of the combination nut 2 is hung in the first hanging groove 42 of the hook 4 .

[0051] As an optional embodiment, the tension connection assembly includes a chuck 5 , which is threadedly connected to the tension rod 1 , and the chuck 5 is used to limit the position of the insulation board 7 .

[0052] For the thermal insulation wall with double-sided plywood sandwich structure, two chucks 5 are provided on the drawing rod 1, and the two chucks 5 respectively abut against the two sides of the thermal insulation board 7, and the two ends of the drawing rod 1 are respectively threadedly connected with two combination nuts 2.

[0053] For the insulation wall with single-sided plywood, a chuck 5 is provided on the drawing rod 1, and the first end of the drawing rod 1 is threadedly connected to the chuck 5, which abuts against the side of the insulation board 7 away from the steel cage, and the second end of the drawing rod 1 is threadedly connected to the combination nut 2.

[0054] The chuck 5 can effectively limit the relative position of the insulation board 7, ensure the casting thickness and quality of the insulation wall, and the drawing rod 1 also has a pin effect on the insulation board 7, connecting two adjacent insulation boards, with significant positioning and connection effects.

[0055] Example 2

[0056] Example 2 is based on Example 1:

[0057] The utility model provides a plywood building template system, such as Figure 7 As shown, the plywood building formwork system includes a steel cage, a plywood formwork 6 and the tension connection assembly.

[0058] Plywood templates 6 are arranged opposite to each other on both sides of the steel cage, the end of the drawing rod 1 passes through the steel cage, the threaded sleeve 21 of the combination nut 2 passes through the corresponding plywood template 6, and the end of the drawing rod 1 is connected to the corresponding combination nut 2.

[0059] The plywood formwork 6 adopts a slender formwork with a thickness of 18mm, a width of 300-400mm, and a length of preferably 3m. This size is convenient for transportation and lifting. The edges of the plywood formwork 6 are waterproof and sealed to prevent the formwork from expanding and cracking due to water entering the edge seams.

[0060] The reinforcing ribs 3 are pre-attached to the board surface of the plywood formwork 6 by means of fixing bolts 32 .

[0061] The density of the tension connection components on the plywood formwork 6 is relatively high, and the spacing thereof is generally 400*400mm. Thus, there is no need to adopt traditional wooden square frame tube support, and the formwork system has good rigidity, high positioning accuracy, stable installation, and good flatness after demolding.

[0062] Embodiment 2 is a non-insulated building formwork system.

[0063] The specific construction process of pouring the wall using the plywood building formwork system is as follows:

[0064] Step I, tying the steel skeleton according to the concrete structure drawing to form a steel cage for the concrete wall;

[0065] Step II, placing a plywood template 6 on the first side of the steel cage and fixing it with diagonal braces to prevent it from falling over, and hanging a combination nut 2 on the hanging groove 31 of the reinforcing rib 3 at the edge of the plywood template 6;

[0066] Step III, continue to place a plywood template 6 on the first side of the steel cage, and connect it to the previous plywood template 6 through the hook 4, so that two adjacent plywood templates 6 are connected;

[0067] Step IV, repeating step III, covering the first side of the steel cage with plywood formwork 6, and integrating all the plywood formwork 6 to form a concrete wall formwork;

[0068] Step V, repeating the above steps II to IV on the second side of the steel cage, so that all the plywood formworks 6 on the second side of the steel cage form a concrete wall formwork, and then pouring concrete in the steel cage;

[0069] Step VI, after the concrete solidifies and reaches the demolding time, first use an auxiliary tool to loosen the combination nut 2, then use a hammer to hit the bottom of the hook 4 to make the hook 4 rotate and disconnect, finally remove the plywood formwork 6, remove and collect the combination nut 2, and the concrete wall casting is completed.

[0070] Example 3

[0071] The difference between Example 3 and Example 2 is that:

[0072] like Figure 8 As shown, the plywood building formwork system includes an insulation board 7, and the insulation board 7, the steel cage and the plywood formwork 6 are arranged in sequence.

[0073] The first end of the wire drawing rod 1 is threadedly connected with a chuck 5, which abuts against the side of the insulation board 7 away from the steel cage. The second end of the wire drawing rod 1 passes through the insulation board 7 and the steel cage in sequence, and the threaded sleeve 21 of the combination nut 2 passes through the plywood template 6. The second end of the wire drawing rod 1 is threadedly connected to the threaded sleeve 21 of the combination nut 2.

[0074] The insulation board 7 is a combined insulation board, which is assembled from a plurality of insulation unit panels. The left and right ends of the insulation unit panels are provided with matching protrusions and grooves. The edge thickness of the insulation board 7 is halved to form an overlapping edge. An overlapping structure is adopted. A penetration hole is provided on the insulation board 7 for passing the drawing rod 1. In this way, the insulation board 7 will be connected together on the left and right sides to correspond to the plywood template on the opposite side.

[0075] Example 3 is a single-sided plywood insulation building formwork system, and its construction process is similar to that of Example 2.

[0076] Example 4

[0077] The difference between Example 4 and Example 2 is that:

[0078] like Fig. 9 As shown, the plywood building formwork system includes an insulation board 7, and the steel cage and the plywood formwork 6 are sequentially arranged on both sides of the insulation board 7 in a direction away from the insulation board 7.

[0079] The end of the drawing rod 1 passes through the insulation board 7 and the corresponding steel cage in sequence, the threaded sleeve 21 of the combination nut 2 passes through the corresponding plywood template 6, and the end of the drawing rod 1 is threadedly connected with the threaded sleeve 21 of the corresponding combination nut 2.

[0080] Two chucks 5 are threadedly connected to the wire drawing rod 1 , and the two chucks 5 press against two sides of the insulation board 7 .

[0081] In this embodiment, the insulation board 7 is located between two plywood formworks 6, dividing the cavity between the two formworks into two. With respect to the insulation board 7, its outer steel cage is used for pouring protective layer concrete, and its inner steel cage is used for pouring structural layer concrete.

[0082] Example 4 is a double-sided plywood insulation sandwich building formwork system, and its construction process is similar to that of Example 2.

[0083] In the description of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0084] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0085] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0086] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A tension connection assembly, characterized in that: It includes a pair of drawing rods and combination nuts, including: The combined nut comprises a screw sleeve with internal threads, a screw head for disassembly and assembly, and a hanging column connected between the screw sleeve and the screw head. The screw sleeve is connected to the end of the drawing rod through the internal threads.

2. The tension connection assembly according to claim 1, characterized in that: The tension connection assembly comprises a reinforcing rib, and both ends of the reinforcing rib are provided with hanging grooves, and the hanging column can be hung in the hanging grooves.

3. The tension connection assembly according to claim 2, characterized in that: The reinforcing ribs are provided with fixing bolts for connecting the template.

4. The tension connection assembly according to claim 2, characterized in that: A rotating shaft is arranged at one end of the reinforcing rib, and a clamping shaft is arranged at the other end of the reinforcing rib; The pulling connection assembly includes a hook, on which a mounting hole, a first hanging groove and a second hanging groove are sequentially arranged. The hook can be rotatably mounted on a rotating shaft corresponding to the reinforcing rib through the mounting hole. The first hanging groove is used to hang a hanging column corresponding to the combination nut, and the second hanging groove is used to hang a clamping shaft corresponding to the reinforcing rib.

5. The tension connection assembly according to claim 1, characterized in that: The tension connection assembly includes a chuck, which is threadedly connected to the tension rod and is used to limit the position of the insulation board.

6. A plywood building formwork system, comprising a steel cage, a plywood formwork and the tension connection assembly according to any one of claims 1 to 5.

7. The plywood building formwork system according to claim 6, characterized in that: The plywood formwork is arranged opposite to each other on both sides of the steel cage; The ends of the pair of drawing rods pass through the steel cage, and the threaded sleeves of the combination nuts pass through the plywood template and are threadedly connected with the ends of the pair of drawing rods.

8. The plywood building formwork system according to claim 6, characterized in that: The plywood building formwork system comprises an insulation board, wherein the insulation board, the steel cage and the plywood formwork are arranged in sequence; The first end of the drawing rod is threadedly connected with a chuck, and the chuck abuts against the side of the insulation board away from the steel cage. The second end of the drawing rod passes through the insulation board and the steel cage in sequence, and the threaded sleeve of the combination nut passes through the plywood template and is threadedly connected to the second end of the drawing rod.

9. The plywood building formwork system according to claim 6, characterized in that: The plywood building formwork system comprises an insulation board, and the steel cage and the plywood formwork are sequentially arranged on both sides of the insulation board in a direction away from the insulation board; The ends of the pair of drawing rods pass through the insulation board and the corresponding steel cage in sequence, and the threaded sleeve of the combination nut passes through the corresponding plywood template and is threadedly connected with the ends of the corresponding pair of drawing rods; The pair of drawing rods are threadedly connected with two chucks, and the two chucks press against two sides of the insulation board.

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