Unbonded rib positioning and grouting sealing structure

Abstract

The utility model discloses an unbonded rib positioning and grouting sealing structure, belongs to the technical field of unbonded prestressed systems, and solves the problem that an existing sealing structure is poor in sealing effect. The sealing device comprises a sealing plate and a pressing plate, the pressing plate is provided with a plurality of through holes with the same number as the unbonded ribs, a plurality of sealing plugs with the same number as the unbonded ribs are detachably installed on one side of the pressing plate, the sealing plate is provided with a plurality of conical holes with the same number as the unbonded ribs, and the sealing plugs are detachably installed on the other side of the pressing plate. The sealing plugs are provided with conical holes, the largest ends of the conical holes face the sides of the sealing plugs, the pressing plate is detachably connected with the sealing plate, after the pressing plate is connected with the sealing plate, the center lines of the sealing plugs, the conical holes and the through holes coincide together in a one-to-one correspondence mode, and a sealing ring is arranged on the side, away from the pressing plate, of the sealing plate. According to the unbonded rib positioning and grouting sealing structure, the positioning accuracy of the unbonded rib and the sealing effect during grouting can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of unbonded prestressed systems, and more specifically, to an unbonded reinforcement positioning and grouting sealing structure. Background Technology

[0002] Currently, in the field of civil engineering, especially in the field of nuclear power plant prestressed containment technology, the use of unbonded prestressed systems allows for a construction process of grouting before tensioning, which can significantly shorten the nuclear power plant construction cycle. However, due to the characteristics of the process, it is necessary to seal the ducts with grout before installing anchors and grout caps, and to seal the ends of the ducts containing unbonded reinforcement. Existing sealing technologies generally use two layers of pressure plates to compress and deform the rubber plate in the middle to achieve a seal for the ducts with unbonded reinforcement. However, the sealing effect is poor, and leakage or inability to maintain pressure is prone to occur during high-pressure grouting, affecting the compactness of the grout in the duct. Furthermore, installation and disassembly are difficult and have poor accuracy, and the positioning accuracy of the unbonded reinforcement is poor, affecting the installation of anchors.

[0003] Therefore, there is an urgent need to design a new type of non-bonded reinforcement positioning and grouting sealing structure to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art. The purpose of this utility model is to provide a non-bonded rib positioning and grouting sealing structure, which can effectively improve the positioning accuracy of the non-bonded rib and the sealing effect during grouting.

[0005] To achieve the above objectives, this utility model provides a non-bonded rib positioning and grouting sealing structure, including a sealing plate and a pressure plate. The pressure plate has multiple through holes, the same number as the number of non-bonded ribs, and multiple sealing plugs, the same number as the number of non-bonded ribs, are detachably installed on one side of the pressure plate. The sealing plate has multiple conical holes, the same number as the number of non-bonded ribs, with the largest end of each conical hole facing the sealing plug. The pressure plate and the sealing plate are detachably connected, and when the pressure plate and the sealing plate are connected, the center lines of the multiple sealing plugs, conical holes, and through holes coincide one-to-one. A sealing ring is provided on the side of the sealing plate away from the pressure plate.

[0006] As a further improvement, each of the sealing plugs has an inwardly narrowing tapered surface at the end facing the tapered hole.

[0007] Furthermore, the pressure plate is also provided with a plurality of positioning screws, all of which are threaded through the pressure plate and connected to the sealing plate.

[0008] Furthermore, the sealing plate is provided with a loosening assembly that can loosen it.

[0009] Furthermore, the sealing plate is also provided with a pair of handles.

[0010] Furthermore, each of the sealing plugs has a step with a diameter larger than that of the sealing plug at one end near the pressure plate, and each of the pressure plates corresponding to the outer edge of the through hole has a groove adapted to the step. A fixing plate is installed on one side of the pressure plate by fastening screws. The fixing plate has multiple through holes with the same number and outer diameter as the sealing plugs. When the fixing plate is installed on the pressure plate, the fixing plate presses the step into the groove.

[0011] Furthermore, a connecting component is provided between the pressure plate and the sealing plate to lock or loosen the connection between the two.

[0012] Furthermore, the connecting assembly includes a clamping screw and a loosening screw. The pressure plate is provided with a plurality of clamping screws, all of which are threaded through the pressure plate and connected to the sealing plate. The pressure plate is also threaded with a loosening screw.

[0013] Furthermore, the connecting assembly includes a locking nut with opposite threads at both ends, and a connecting post is provided on the side of the sealing plate near the pressure plate. The two ends of the locking nut are threadedly connected to the pressure plate and the connecting post, respectively.

[0014] Furthermore, the connecting assembly includes a locking nut, a connecting post is provided on the side of the sealing plate near the pressure plate, one end of the locking nut is rotatably sleeved on the connecting post, and a limiting structure is provided between the locking nut and the connecting post to restrict the axial movement of the locking nut, and the other end of the locking nut is threaded to the pressure plate.

[0015] Beneficial effects

[0016] Compared with the prior art, the advantages of this utility model are as follows:

[0017] The sealing structure of this utility model, by setting a sealing unit equal to the number of unbonded ribs, transforms a whole rubber plate into several sealing plugs that cooperate with the conical hole, to achieve independent sealing of a single unbonded rib. This results in less deformation, more uniform deformation, and better sealing effect. It can withstand higher grouting pressure without leakage, and the conical hole automatically aligns, effectively improving the positioning accuracy of the unbonded ribs and the sealing effect during grouting. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 This is an enlarged schematic diagram of a partial cross-sectional structure in the main view of Embodiment 1 of this utility model.

[0020] Figure 3 This is an enlarged schematic diagram of the main structure of the sealing plug in this utility model;

[0021] Figure 4 This is a schematic diagram of the main structure of the present invention in use;

[0022] Figure 5 This is an enlarged schematic diagram of a partial cross-sectional structure in the main view of Embodiment 2 of this utility model;

[0023] Figure 6 This is an enlarged schematic diagram of a partial cross-sectional structure in the main view of Embodiment 3 of this utility model;

[0024] Figure 7 This is an enlarged schematic diagram of a partial cross-sectional structure in the main view of Embodiment 4 of this utility model;

[0025] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point C.

[0026] Wherein: 4-anchor plate, 5-grouting connector, 6-unbonded rib, 8-sealing ring, 10-sealing plate, 11-pressure plate, 12-through hole, 13-sealing plug, 14-tapered hole, 15-positioning screw, 16-loosening screw, 17-loosening nut, 18-handle, 19-fastening screw, 20-fixing plate, 22-bolt hole, 23-clamping screw, 24-connecting column, 25-locking nut, 26-annular limiting groove, 27-limiting ring, 2131-step, 132-tapered surface. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0028] Example 1

[0029] See Figure 1-4This utility model discloses a non-bonded rib positioning and grouting sealing structure, comprising a sealing plate 10 and a pressure plate 11. The pressure plate 11 has multiple through holes 12, the same number as the non-bonded ribs 6. Multiple sealing plugs 13, the same number as the non-bonded ribs 6, are detachably installed on one side of the pressure plate 11. The positions of the multiple sealing plugs 13 correspond one-to-one with the positions of the multiple through holes 12. The sealing plugs 13 are hollow structures used to pass through the non-bonded ribs 6. The sealing plugs 13 that seal each non-bonded rib 6 independently can be replaced individually if damaged during repeated use, saving costs. The sealing plate 10 has multiple tapered holes 14, the same number as the unbonded ribs 6, with the largest end of each tapered hole 14 facing the sealing plug 13. The pressure plate 11 is detachably connected to the sealing plate 10 for easy disassembly and maintenance. When the pressure plate 11 is connected to the sealing plate 10, the center lines of the multiple sealing plugs 13, tapered holes 14, and through holes 12 are aligned, ensuring that the unbonded ribs 6 can pass through the sealing plate 10, pressure plate 11, and sealing plugs 13. Specifically, during the connection process between the pressure plate 11 and the sealing plate 10, as the pressure plate 11 moves axially toward the sealing plate 10, the sealing plugs 13 deform radially toward the unbonded ribs 6. The axial deformation is converted into radial deformation through the tapered holes 14, achieving a seal with the unbonded ribs 6, resulting in high sealing reliability.

[0030] The sealing structure of this utility model, by setting a sealing unit equal to the number of unbonded ribs, transforms a whole rubber plate into several sealing plugs that cooperate with the conical hole, to achieve independent sealing of a single unbonded rib. This results in less deformation, more uniform deformation, and better sealing effect. It can withstand higher grouting pressure without leakage, and the conical hole automatically aligns, effectively improving the positioning accuracy of the unbonded ribs and the sealing effect during grouting.

[0031] Preferably, a sealing ring 8 is provided on the side of the sealing plate 10 away from the pressure plate 11. Specifically, a groove is provided on the sealing plate 10, and the sealing ring 8 is embedded in the groove to fix the sealing ring 8 to the sealing plate 10. The sealing effect can be further improved by setting the sealing ring 8.

[0032] Preferably, each sealing plug 13 has an inwardly narrowing tapered surface 132 at one end facing the tapered hole 14. The tapered surface 132 of the sealing plug 13 is used to cooperate with the tapered hole 14 of the sealing plate 10, which makes it easier for the sealing plug 13 to deform and reduces the wear on the sealing plug 13, thus extending its service life.

[0033] Preferably, the pressure plate 11 is also provided with a plurality of positioning screws 15, all of which are threaded through the pressure plate 11 and connected to the sealing plate 10. By providing positioning screws 15 between the pressure plate 11 and the sealing plate 10, the problem of relative deflection between the two is prevented during the assembly of the sealing structure, and at the same time, it can also play a guiding role during the adjustment of the axial movement of the pressure plate 11.

[0034] Preferably, the sealing plate 10 has multiple bolt holes 22, the positions of which correspond one-to-one with the holes in the anchor plate 4, facilitating the fixing of the entire sealing structure onto the anchor plate 4 with bolts. After the sealing structure is installed on the anchor plate 4, the prestressed ducts can be grouted through the grouting connector 5.

[0035] Preferably, a pair of handles 18 are also provided on the sealing plate 10 to facilitate the disassembly and assembly of the sealing structure by the staff.

[0036] Preferably, each sealing plug 13 has a step 131 with a diameter larger than that of the sealing plug 13 at one end near the pressure plate 11. Each pressure plate 11 corresponding to the outer edge of the through hole 12 has a countersunk groove adapted to the step 131. A fixing plate 20 is installed on one side of the pressure plate 11 via countersunk screws 19. The fixing plate 20 has multiple through holes of the same number and outer diameter as the sealing plugs 13. When the fixing plate 20 is installed on the pressure plate 11, the step 131 is inserted into the countersunk groove, and the sealing plugs 13 are all inserted into the through holes. The fixing plate 20 presses the step 131 tightly into the countersunk groove, achieving detachable installation of the sealing plug 13. In this embodiment, the positioning screw 15 and the loosening screw 16 both penetrate the fixing plate 20. In this embodiment, the sealing plug 13 and the pressure plate 11 are installed as a single unit via the countersunk groove and the fixing plate 20, facilitating the installation and disassembly of the entire sealing structure.

[0037] Preferably, a connecting assembly is provided between the pressure plate 11 and the sealing plate 10 to lock or loosen the connection between the two. In this embodiment, the connecting assembly includes a clamping screw 23 and a loosening screw 16. The pressure plate 11 has multiple clamping screws 23, all of which are threaded through the pressure plate 11 and connected to the sealing plate 10. Tightening the clamping screws 23 moves the pressure plate 11 and the sealing plug 13 towards one side of the sealing plate 11, thus clamping the sealing plug 13. In this embodiment, the clamping screws 23 also penetrate the fixing plate 20. A loosening screw 16 is also threaded onto the pressure plate 11, penetrating the pressure plate 11. When disassembling the sealing structure, the pressure plate 11 and the sealing plug 13 can be pushed away from the sealing plate 10 by tightening the loosening screw 16, facilitating the disassembly of the sealing structure.

[0038] Example 2

[0039] See Figure 5This is another embodiment of the present invention, which is basically the same as embodiment 1, except that a loosening component is provided on the sealing plate 10 to loosen it. In this embodiment, the loosening component is a loosening nut 17, which is also threadedly connected to the periphery of the sealing plate 10. When disassembling the sealing structure, the sealing structure can be loosened and detached from the anchor plate 4 by turning the loosening nut 17, which facilitates the disassembly of the sealing structure. Preferably, a locking groove can be provided on the outer wall of the loosening nut 17, which facilitates the use of a steel rod inserted into the locking groove to rotate the loosening nut 17, making the operation more convenient. In other embodiments, the loosening component can be a loosening screw, and a loosening screw 16 is threadedly connected to the sealing plate 10 to achieve the same effect.

[0040] Example 3

[0041] See Figure 6 In another embodiment of this utility model, the connecting component includes a locking nut 25 with opposite thread directions at both ends. A connecting post 24 is provided on the side of the sealing plate 10 near the pressure plate 11. Both the outer walls of the pressure plate 11 and the connecting post 24 have external threads with opposite thread directions. The two ends of the locking nut 25 are threaded onto the pressure plate 11 and the connecting post 24, respectively. By turning the locking nut 25, the pressure plate 11 and the connecting post 24 move closer or further apart, thus achieving the connection, locking, or loosening / separation of the pressure plate 11 and the sealing plate 10. Using the locking nut 25 to connect and loosen the sealing plate 10 and the pressure plate 11 makes the force on both more even and extends their service life. Preferably, the outer wall of the locking nut 25 can be provided with a slot, which facilitates the use of a steel rod inserted into the slot to rotate the locking nut 25, making the operation more convenient.

[0042] Example 4

[0043] See Figure 7-8In another embodiment of this utility model, the connecting assembly includes a locking nut 25. A connecting post 24 is provided on the side of the sealing plate 10 near the pressure plate 11. One end of the locking nut 25 is rotatably sleeved on the connecting post 24, and a limiting structure is provided between the locking nut 25 and the connecting post 24 to restrict the axial movement of the locking nut 25. The limiting structure can be an annular limiting groove 26 opened on the outer wall of the connecting post 24 and a limiting ring 27 provided at one end of the locking nut 25. The limiting ring 27 is sleeved in the limiting ring groove 26 so that the locking nut 25 can only rotate relative to the sealing plate 10 and cannot move axially relative to the sealing plate 10. The outer wall of the pressure plate 11 is provided with an external thread, and the other end of the locking nut 25 is threadedly connected to the pressure plate 11. In this way, by turning the locking nut 25, the axial movement of the pressure plate 11 relative to the sealing plate 10 can also be achieved. In other embodiments, the limiting structure can also be a limiting protrusion on the outer wall of the connecting column 24 and a limiting ring 27 on one end of the locking nut 25, or a limiting protruding ring on the outer wall of the connecting column 24 and a limiting groove on the inner wall of one end of the locking nut 25, which can achieve the same technical effect.

[0044] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A non-bonded reinforcement positioning and grouting sealing structure, characterized in that, The system includes a sealing plate (10) and a pressure plate (11). The pressure plate (11) has a plurality of through holes (12) with the same number as the unbonded ribs (6). A plurality of sealing plugs (13) with the same number as the unbonded ribs (6) are detachably installed on one side of the pressure plate (11). The sealing plate (10) has a plurality of conical holes (14) with the same number as the unbonded ribs (6). The largest end of the conical hole (14) is set towards the sealing plug (13). The pressure plate (11) and the sealing plate (10) are detachably connected. When the pressure plate (11) and the sealing plate (10) are connected, the center lines of the plurality of sealing plugs (13), conical holes (14), and through holes (12) are aligned one by one. A sealing ring (8) is provided on the side of the sealing plate (10) away from the pressure plate (11).

2. The unbonded reinforcement positioning and grouting sealing structure according to claim 1, characterized in that, Each of the sealing plugs (13) has an inwardly narrowing tapered surface (132) at one end facing the tapered hole (14).

3. The non-bonded reinforcement positioning and grouting sealing structure according to claim 1, characterized in that, The pressure plate (11) is also provided with a plurality of positioning screws (15), and the plurality of positioning screws (15) are threaded through the pressure plate (11) and connected to the sealing plate (10).

4. The unbonded reinforcement positioning and grouting sealing structure according to claim 1, characterized in that, The sealing plate (10) is provided with a loosening assembly that can loosen it.

5. The unbonded reinforcement positioning and grouting sealing structure according to claim 1, characterized in that, The sealing plate (10) is also provided with a pair of handles (18).

6. The unbonded reinforcement positioning and grouting sealing structure according to claim 1, characterized in that, Each of the sealing plugs (13) has a step (131) with a diameter larger than that of the sealing plug (13) at one end near the pressure plate (11). Each of the through holes (12) has a groove on the pressure plate (11) corresponding to the outer edge of the pressure plate (11) that is adapted to the step (131). A fixing plate (20) is installed on one side of the pressure plate (11) by fastening screws (19). The fixing plate (20) has multiple through holes with the same number and outer diameter as the sealing plugs (13). When the fixing plate (20) is installed on the pressure plate (11), the fixing plate (20) presses the step (131) into the groove.

7. The unbonded reinforcement positioning and grouting sealing structure according to any one of claims 1-6, characterized in that, The pressure plate (11) and the sealing plate (10) are provided with a connecting component that can lock or loosen the two together.

8. The non-bonded reinforcement positioning and grouting sealing structure according to claim 7, characterized in that, The connecting assembly includes a clamping screw (23) and a loosening screw (16). The pressure plate (11) is provided with a plurality of clamping screws (23). The plurality of clamping screws (23) all pass through the pressure plate (11) and are threadedly connected to the sealing plate (10). The pressure plate (11) is also threadedly connected with a loosening screw (16).

9. The unbonded reinforcement positioning and grouting sealing structure according to claim 7, characterized in that, The connecting assembly includes a locking nut (25) with opposite threads at both ends. A connecting post (24) is provided on the side of the sealing plate (10) near the pressure plate (11). The two ends of the locking nut (25) are threaded to the pressure plate (11) and the connecting post (24), respectively.

10. The unbonded reinforcement positioning and grouting sealing structure according to claim 7, characterized in that, The connecting assembly includes a locking nut (25), and a connecting post (24) is provided on the side of the sealing plate (10) near the pressure plate (11). One end of the locking nut (25) is rotatably sleeved on the connecting post (24), and a limiting structure is provided between the locking nut (25) and the connecting post (24) to restrict the axial movement of the locking nut (25). The other end of the locking nut (25) is threadedly connected to the pressure plate (11).

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