An assembled prefabricated concrete hole forming fixing device

Abstract

The utility model discloses an assembly type prefabricated concrete hole forming fixing device relates to prefabricated concrete member production mould field in building industrialization, include: base, connecting sleeve, annular sealing washer and fixed part, base is equipped with sealing groove to one side of mould platform, and annular sealing washer is placed in sealing groove, and annular sealing washer has elasticity, the through -hole is equipped with in base, the utility model discloses a reliable dynamic sealing barrier is formed between base and mould platform through the elastic compression of annular sealing washer, fundamentally puts an end to cement mortar leakage, effectively avoids pollution and device consolidation, and the fixed part of prewelding guarantees the extremely high repeat positioning accuracy and batch consistency of reserved hole, in addition, the detachable design of the utility model makes the routine maintenance and annular sealing washer replacement become extremely simple, just can split with fixed part with connecting sleeve, greatly reduces the maintenance cost and time cost of long -term use.

Description

Technical Field

[0001] This utility model relates to the technical field of precast concrete component production molds in industrialized building construction, specifically to a prefabricated precast concrete hole forming and fixing device. Background Technology

[0002] In prefabricated buildings, precast concrete components, such as wall panels, floor slabs, beams, and columns, typically require pre-drilled holes for installing pipelines, connectors, or ventilation ducts. These holes are created by installing molding devices on a formwork platform. After the molding device is installed on the platform, concrete is poured onto it. Once the concrete has cured, the molding device can be removed, leaving the required holes in the original locations.

[0003] Existing fixing methods have significant drawbacks: the gap between the fixing device and the steel formwork is prone to cement grout leakage under the pressure of concrete pouring and vibration. This leakage not only contaminates the formwork and component surfaces, affecting aesthetics, but also causes the forming device to become fixed, difficult to remove, or even damaged. Furthermore, the positioning accuracy and consistency of the fixing device in repeated use are difficult to guarantee, and maintenance and replacement of damaged sealing components are inconvenient, increasing operating costs. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide an assembled precast concrete hole forming and fixing device.

[0005] The objective of this utility model can be achieved through the following technical solutions: A prefabricated concrete hole forming and fixing device, comprising: Base, connecting sleeve, annular sealing ring, and fasteners; The base has a sealing groove on the side facing the mold table, and the annular sealing ring is placed in the sealing groove. The annular sealing ring is elastic. The base has a through hole, and the connecting sleeve is detachably connected to the through hole. One side of the fixing member is fixedly connected to the mold table, and the other side of the fixing member is detachably connected to the connecting sleeve so that the annular sealing ring abuts against the surface of the mold table.

[0006] As a further embodiment of this utility model: the connecting sleeve is provided with a threaded hole, and the fixing member is provided with a first thread that is adapted to the threaded hole.

[0007] As a further aspect of this utility model: when the annular sealing ring is installed in the sealing groove, the outer wall of the annular sealing ring and the sealing groove form an interference fit.

[0008] As a further embodiment of this utility model: the through hole is provided with a threaded groove, and a second thread adapted to the threaded groove is provided on one side of the connecting sleeve, and the connecting sleeve is threadedly connected to the base.

[0009] As a further embodiment of this utility model, a limiting groove is provided on the side of the base facing the fixing member.

[0010] As a further embodiment of this utility model, the axial cross-section of the limiting groove is stepped.

[0011] As a further embodiment of this utility model, the radial end face of the annular sealing ring is circular, rectangular, or trapezoidal.

[0012] As a further embodiment of this invention, the annular sealing ring is made of rubber or silicone material.

[0013] As a further embodiment of this utility model: the fixing member is welded to the mold platform.

[0014] As a further embodiment of this utility model: the fixing member is perpendicular to the surface of the mold table.

[0015] The beneficial effects of this utility model are as follows: This utility model forms a reliable dynamic sealing barrier between the base and the mold table through the elastic compression of the annular sealing ring, which fundamentally eliminates cement slurry leakage, effectively avoids pollution and device solidification, and the pre-welded fasteners ensure extremely high repeatability and batch consistency of the reserved holes. In addition, the detachable design of this utility model makes daily maintenance and replacement of the annular sealing ring extremely convenient. It is only necessary to separate the connecting sleeve from the fasteners, which greatly reduces the maintenance cost and time cost of long-term use. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is an exploded view of the overall structure of an embodiment of this utility model; Figure 3 This is an exploded cross-sectional view of the base and connecting sleeve of an embodiment of the present utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Base; 2. Connecting sleeve; 3. Annular sealing ring; 4. Fixing component; 11. Sealing groove; 12. Through hole; 21. Threaded hole; 41. First thread; 121. Threaded groove; 22. Second thread; 13. Limiting groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] See Figures 1-2 An embodiment of the present invention provides an assembled precast concrete hole forming and fixing device, comprising: a base 1, a connecting sleeve 2, an annular sealing ring 3, and a fixing member 4; a sealing groove 11 is provided on the end face of the base 1 facing the mold table, the annular sealing ring 3 is placed in the sealing groove 11, and the annular sealing ring 3 is elastic; a through hole 12 is provided in the base 1, the connecting sleeve 2 is detachably connected to the through hole 12, one side of the fixing member 4 is fixedly connected to the mold table, and the other side of the fixing member 4 is detachably connected to the connecting sleeve 2 so that the annular sealing ring 3 abuts against the surface of the mold table.

[0021] Specifically, when installing this device, first press the annular sealing ring 3 into the sealing groove 11 on the base 1, and install the connecting sleeve 2 into the through hole 12 on the base 1. Then, align the side of the base 1 with the annular sealing ring 3 towards the fixing member 4, and connect the connecting sleeve 2 to the fixing member 4, forcing the base 1 to press against the mold surface. Because the annular sealing ring 3 is elastic, the annular sealing ring 3 at the bottom of the base 1 is fully compressed, undergoes elastic deformation, and tightly fits against the mold surface, forming a dynamic and reliable sealing barrier. Finally, the required hole-forming parts (such as PVC sleeves, metal embedded boxes, etc.) are fitted and installed onto the connecting sleeve 2. When maintenance is required, simply remove the connecting sleeve 2 to remove the base 1 and easily replace the new annular sealing ring 3. The maintenance process is simple and quick. At the same time, the connecting sleeve 2 fitted on the base 1 provides a standardized connection interface for the subsequent installation of various hole-forming parts.

[0022] Furthermore, this invention forms a reliable dynamic sealing barrier between the base 1 and the mold table through the elastic compression of the annular sealing ring 3, fundamentally preventing cement slurry leakage, effectively avoiding pollution and device solidification. The pre-welded fastener 4 ensures extremely high repeatability and batch consistency of the reserved holes. In addition, the detachable design of this invention makes daily maintenance and replacement of the annular sealing ring 3 extremely convenient. It is only necessary to separate the connecting sleeve 2 from the fastener 4, which greatly reduces the maintenance cost and time cost of long-term use.

[0023] See Figures 1-2 Optionally, the connecting sleeve 2 has a threaded hole 21 inside, and the fixing member 4 has a first thread 41 that is adapted to the threaded hole 21.

[0024] In this embodiment, when the connecting sleeve 2 is connected to the fixing member 4, the first thread 41 provided on the fixing member 4 is inserted into the threaded hole 21 inside the connecting sleeve 2. By rotating the connecting sleeve 2, the base 1 and the connecting sleeve 2 are fastened to the fixing member 4, and the annular sealing ring 3 at the bottom of the base 1 is tightly fitted to the surface of the mold table. The threaded connection enhances the stability of the device, prevents loosening during concrete vibration, and allows adjustment of the tightness to optimize the sealing effect.

[0025] See Figures 1-2 Optionally, when the annular sealing ring 3 is installed in the sealing groove 11, the annular sealing ring 3 and the sealing groove 11 form an interference fit, and the annular sealing ring 3 is tightly stuck in the groove. The outer diameter of the annular sealing ring 3 in its free state is slightly larger than the outer diameter of the bottom of the sealing groove 11, and the height is slightly larger than the depth of the sealing groove 11, so as to ensure that the annular sealing ring 3 can generate sufficient sealing force when compressed.

[0026] In this embodiment, the interference fit between the annular sealing ring 3 and the sealing groove 11 can prevent the annular sealing ring 3 from shifting or falling off during installation or use, thereby improving sealing reliability and reducing the risk of leakage that may result from loosening of the annular sealing ring 3.

[0027] See Figures 1-3 Optionally, the through hole 12 is provided with a threaded groove 121, and the connecting sleeve 2 is provided with a second thread 22 that is adapted to the threaded groove 121 on one side. The connecting sleeve 2 is threadedly connected to the side of the base 1 away from the sealing groove 11.

[0028] In this embodiment, during installation, the connecting sleeve 2 is screwed onto the base 1 from the side away from the annular sealing ring 3. Through the engagement of the threaded groove 121 in the through hole 12 and the second thread 22 on the connecting sleeve 2, the connecting sleeve 2 and the base 1 are detachably fixed, making the installation and removal of the connecting sleeve 2 more convenient, facilitating the replacement of the annular sealing ring 3 or the maintenance of other components. The threaded connection also ensures a tight fit between the base 1 and the connecting sleeve 2 and facilitates the adjustment of the tightness.

[0029] See Figures 1-3 Optionally, a limiting groove 13 is provided on the side of the base 1 facing the fixing member 4.

[0030] In this embodiment, the limiting groove 13 is used to prevent the annular sealing ring 3 from being over-compressed due to excessive tightening of the fastener 4 during installation, thereby avoiding damage or stripping of the threads of the base 1 and the connecting sleeve 2 due to excessive tightening force.

[0031] See Figures 1-3 Optionally, the axial cross section of the limiting groove 13 is stepped.

[0032] In this embodiment, the stepped structure provides a more prepared and stable bearing surface for the head of the fastener 4. The stepped guide structure makes it easier for the head of the fastener 4 to be aligned with the center and reach the predetermined position smoothly when screwed in, thus achieving more accurate stroke limit.

[0033] Optionally, the radial end face of the annular sealing ring 3 is circular, rectangular, or trapezoidal.

[0034] In this embodiment, sealing rings of different shapes provide different compression characteristics and contact areas to adapt to different pressure conditions.

[0035] Optionally, the annular sealing ring 3 is made of rubber or silicone material.

[0036] In this embodiment, the rubber and silicone materials possess excellent elasticity, wear resistance, and pressure resistance, enabling them to maintain sealing performance during concrete pouring and resist aging even after repeated use.

[0037] Optionally, the fastener 4 is welded to the mold base.

[0038] In this embodiment, welding provides a high-strength connection, preventing the fastener 4 from shifting under vibration or pressure, thereby ensuring the relative position stability of the base 1 and the mold table.

[0039] Optionally, the fixing member 4 is perpendicular to the surface of the mold table, and the base 1 is also perpendicular to the surface of the mold table accordingly.

[0040] In this embodiment, vertical installation ensures that the base 1 is parallel to the mold table surface, guaranteeing that the annular sealing ring 3 is evenly compressed and preventing local leakage caused by skewing.

[0041] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., 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 communication between 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.

[0043] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A prefabricated concrete hole forming and fixing device, characterized in that, include: Base (1), connecting sleeve (2), annular sealing ring (3) and fastener (4); A sealing groove (11) is provided on the side of the base (1) facing the mold table, and the annular sealing ring (3) is placed in the sealing groove (11). The annular sealing ring (3) is elastic. The base (1) has a through hole (12) and the connecting sleeve (2) is detachably connected to the through hole (12). One side of the fixing member (4) is fixedly connected to the mold table, and the other side of the fixing member (4) is detachably connected to the connecting sleeve (2) so that the annular sealing ring (3) abuts against the surface of the mold table.

2. The prefabricated concrete hole forming and fixing device according to claim 1, characterized in that, The connecting sleeve (2) has a threaded hole (21) inside, and the fixing member (4) has a first thread (41) that is adapted to the threaded hole (21).

3. The prefabricated concrete hole forming and fixing device according to claim 2, characterized in that, When the annular sealing ring (3) is installed in the sealing groove (11), the outer wall of the annular sealing ring (3) and the sealing groove (11) form an interference fit.

4. The prefabricated concrete hole forming and fixing device according to claim 3, characterized in that, The through hole (12) is provided with a threaded groove (121), and the connecting sleeve (2) is provided with a second thread (22) that is adapted to the threaded groove (121) on one side. The connecting sleeve (2) is threadedly connected to the base (1).

5. The prefabricated concrete hole forming and fixing device according to claim 4, characterized in that, A limiting groove (13) is provided on the side of the base (1) facing the fixing member (4).

6. The prefabricated concrete hole forming and fixing device according to claim 5, characterized in that, The axial cross section of the limiting groove (13) is stepped.

7. The prefabricated concrete hole forming and fixing device according to claim 6, characterized in that, The radial end face of the annular sealing ring (3) is circular, rectangular or trapezoidal.

8. The prefabricated concrete hole forming and fixing device according to claim 7, characterized in that, The annular sealing ring (3) is made of rubber or silicone material.

9. The prefabricated concrete hole forming and fixing device according to claim 1, characterized in that, The fastener (4) is welded to the mold platform.

10. The prefabricated concrete hole forming and fixing device according to claim 1, characterized in that, The fixing element (4) is perpendicular to the surface of the mold table.

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