Temporary plugging device for construction reserved hole

Abstract

This invention discloses a temporary sealing device for reserved openings in building construction, comprising a cross-shaped frame, an outer hole sealing plate, and an inner hole sealing plate. The outer hole sealing plate can be installed independently or in conjunction with the inner hole sealing plate. The cross-shaped frame is fixed to the foundation surface by fixing bolts. The outer hole sealing plate is detachably arranged around the cross-shaped frame, and the inner hole sealing plate is located at the bottom of the reserved opening. The outer hole sealing plate and the inner hole sealing plate isolate and seal both ends of the reserved opening. The outer hole sealing plate includes multiple plug-in plates, and the outer side of the cross-shaped frame has slots. Two adjacent plug-in plates are connected by a U-shaped locking buckle. This temporary sealing device for reserved openings in building construction can seal the inner and outer openings of the reserved opening, preventing internal and external communication. After sealing, the external opening can still allow pedestrians and vehicles to pass through, and the internal structure is not affected by external forces. The overall structure is stable and easy to disassemble and assemble, making it suitable for widespread use.

Description

Technical Field

[0001] This invention relates to the field of infrastructure construction technology, and in particular to a temporary sealing device for reserved openings in building construction. Background Technology

[0002] The reasons for the formation of reserved openings are varied, mainly related to architectural design and construction requirements. From a design perspective, the diversity of building functions necessitates the reservation of various types of openings. For example, to accommodate the passage requirements of water and electricity pipelines, ventilation ducts, and other equipment, openings of appropriate sizes need to be reserved during the construction of walls, floors, or underground structures. Some buildings also require specific reserved openings during the early stages of construction due to later functional adjustments, such as the addition of elevators or the installation of large equipment.

[0003] The purpose of pre-reserved openings is primarily to ensure the normal functionality of a building and the smooth progress of construction. Functionally, these openings provide access for the installation of various pipelines and equipment. Without pre-reservation, these openings would need to be excavated later in the walls or floors, which would not only compromise the integrity of the building structure and affect its strength, but could also damage completed decoration and finishing work, increasing construction costs and time.

[0004] After a phase of construction is completed, the reserved holes usually need to be temporarily sealed. This is not only to prevent people or objects from falling into the holes and to ensure safety, but also to prevent dust and debris from entering the reserved holes, which would make it difficult to seal them later and affect the quality of the sealing.

[0005] Pre-reserved openings typically have two entrances, an inner and an outer one. However, traditional sealing methods usually involve sealing the outer entrance with steel plates, frames, etc., while the inner entrance remains unprotected. If the soil or rock in the cave wall falls off, it poses a certain danger. Furthermore, the outer surface is easily impacted by external forces after sealing, affecting the quality of the temporary sealing and resulting in unsatisfactory performance. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems by providing a temporary sealing device for reserved openings in building construction that can seal the inner and outer openings of reserved openings, prevent internal and external communication, allow pedestrians and vehicles to pass through after sealing, ensure that the internal structure is not affected by external forces, and has a stable overall structure that is easy to disassemble and assemble.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: a temporary sealing device for reserved openings in building construction, comprising a cross-shaped frame, an outer hole sealing plate, and an inner hole sealing plate. The outer hole sealing plate can be set independently or in conjunction with the inner hole sealing plate. The cross-shaped frame is fixed to the foundation surface by fixing bolts. The outer hole sealing plate is detachably arranged around the cross-shaped frame. The inner hole sealing plate is located at the bottom of the reserved opening. The outer hole sealing plate and the inner hole sealing plate isolate and seal both ends of the reserved opening. The outer diameter of the inner hole sealing plate is adjustable, and when sealing, the outer diameter of the inner hole sealing plate is larger than the inner diameter of the temporary opening.

[0008] Preferably, the outer hole sealing plate includes multiple plug-in plates, each plug-in plate being 1 / 8 circle in shape. The outer side of the cross-shaped frame is provided with a slot, and the plug-in plate moves towards the axis at the slot. Two adjacent plug-in plates are connected by a U-shaped latch.

[0009] Preferably, the inner hole sealing disc includes four movable fins that move together, with a gap between each pair of adjacent movable fins. The movable fins are 1 / 4 circular. Under normal conditions, the circumference of the movable fins falls down due to their own gravity, and the movable fins are in a horizontal state during use.

[0010] Preferably, the center of the cross-shaped frame is further provided with a through-hole adjusting stud. The bottom end of the adjusting stud is inserted into a threaded sleeve. The bottom circumference of the threaded sleeve is provided with multiple notches, each notch corresponding to a movable fin. A central shaft is provided inside the movable fin. The central shaft extends into the threaded sleeve at the notch and is hinged to the threaded sleeve within the notch via a hinge shaft. When the adjusting stud moves downward through the thread, it presses the end of the central shaft, causing the movable fin to tilt upward. When the adjusting stud moves upward, the movable fin swings downward due to its own gravity.

[0011] Preferably, the threaded sleeve is provided with at least one limiting bent rod on its exterior. One end of the limiting bent rod is fixed to the outer wall of the threaded sleeve, and the other end extends upward and passes through the cross-shaped skeleton. The surface of the cross-shaped skeleton is provided with a locking nut that cooperates with the adjusting stud.

[0012] Preferably, the cross-shaped frame is provided with a fixing frame on the outside, and the ends of the cross-shaped frame are connected to the fixing frame by angle iron and bolts. The surface of the fixing frame is provided with a step, and a protective cover plate is provided inside the step.

[0013] Preferably, a protective cylinder is provided at the bottom center of the protective cover plate, the protective cylinder is located directly above the adjusting stud, and the end of the adjusting stud extends into the protective cylinder; the protective cylinder includes an outer cylinder and an inner cylinder, the outer cylinder is fixed to the bottom surface of the protective cover plate, the inner cylinder is located inside the outer cylinder, a second spring is provided at the top of the inner cylinder, one end of the second spring is fixed to the protective cover plate, and the other end is fixed to the top surface of the inner cylinder, the interior of the inner cylinder is provided with a countersunk hole covering the adjusting stud; the inner wall of the outer cylinder is provided with multiple guide rods.

[0014] Preferably, the bottom of the protective cover is also provided with four sets of buffer mechanisms to prevent the cross-shaped frame from bending under pressure. The four sets of buffer mechanisms are arranged in an array above the cross-shaped frame. Each set of buffer mechanisms includes a pressure-bearing block fixed on the protective cover and sliders on both sides of the pressure-bearing block. The sliders are slidably disposed on the cross-shaped frame. The bottom of the pressure-bearing block is provided with a telescopic rod. The telescopic rod extends downward through the cross-shaped frame, and a first spring is provided around the extension part of the telescopic rod.

[0015] Preferably, a mutually bent insertion rod is provided between the two sliders. The insertion rods extend into the connecting cylinder. A tension spring is provided in the extension cylinder. The two ends of the tension spring are respectively fixed to the ends of the two insertion rods. When the pressure block moves downward, the two sliders move towards each other and pull the tension spring.

[0016] Preferably, a matching pad frame is provided around the fixing frame, and the pad frame has a sloping surface around its perimeter.

[0017] This invention discloses a temporary sealing device for reserved openings in building construction, comprising a cross-shaped frame, an outer hole sealing plate, and an inner hole sealing plate. The outer hole sealing plate can be installed independently or in conjunction with the inner hole sealing plate. The cross-shaped frame is fixed to the foundation surface by fixing bolts. The outer hole sealing plate is detachably arranged around the cross-shaped frame, and the inner hole sealing plate is located at the bottom of the reserved opening. The outer hole sealing plate and the inner hole sealing plate isolate and seal both ends of the reserved opening. The outer hole sealing plate includes multiple plug-in plates, and the outer side of the cross-shaped frame has slots. Two adjacent plug-in plates are connected by a U-shaped locking buckle. Compared with the prior art, this temporary sealing device for reserved openings in building construction has the advantages of being able to seal the inner and outer openings of the reserved opening, preventing internal and external communication, allowing pedestrians and vehicles to pass through after sealing, and ensuring that the internal structure is not affected by external forces, with a stable overall structure that is easy to assemble and disassemble. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a temporary sealing device for reserved openings in building construction according to the present invention. Figure 1 .

[0019] Figure 2This is a schematic diagram of the overall structure of a temporary sealing device for reserved openings in building construction according to the present invention. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the inner hole sealing plate in the natural state of a temporary sealing device for reserved holes in building construction according to the present invention.

[0021] Figure 4 This invention relates to a temporary sealing device for reserved openings in building construction. Figure 1 A cross-sectional schematic diagram.

[0022] Figure 5 This invention relates to a temporary sealing device for reserved openings in building construction. Figure 2 A magnified structural diagram of point A in the middle.

[0023] Figure 6 This is a schematic diagram of the structure of a temporary sealing device for reserved holes in building construction, which is combined with a fixed frame according to the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of the fixed frame and protective cover plate in a temporary sealing device for reserved openings in building construction according to the present invention. Figure 1 .

[0025] Figure 8 This is a schematic diagram of the structure of the fixed frame and protective cover plate in a temporary sealing device for reserved openings in building construction according to the present invention. Figure 2 .

[0026] Figure 9 This is a schematic diagram of the structure of the fixed frame and protective cover plate in a temporary sealing device for reserved openings in building construction according to the present invention. Figure 3 .

[0027] Figure 10 For the present invention Figure 9 A cross-sectional schematic diagram.

[0028] Figure 11 For the present invention Figure 9 A magnified structural diagram at point B in the middle.

[0029] Figure 12 For the present invention Figure 9 A magnified structural diagram at point C.

[0030] Figure 13 For the present invention Figure 10 A magnified structural diagram at point D.

[0031] Figure 14 This is a schematic diagram of the usage state of the present invention. Figure 1 .

[0032] Figure 15 This is a schematic diagram of the usage state of the present invention. Figure 2 .

[0033] Figure 16 This is a schematic diagram of the usage state of the present invention. Figure 3 .

[0034] The components include: 1. Cross-shaped frame; 11. Fixing bolt; 12. Slot; 13. Slider; 14. Telescopic rod; 15. First spring; 16. Insertion and extraction bent rod; 17. Connecting cylinder; 2. Adjusting stud; 21. Locking nut; 3. Threaded sleeve; 31. Limiting bent rod; 32. Notch; 33. Hinge shaft; 4. Inner hole sealing plate; 41. Movable fin plate; 42. Gap; 43. Central shaft; 5. Outer hole sealing plate; 51. Insertion plate; 52. U-shaped lock; 6. Fixing frame; 61. Angle iron; 62. Step; 7. Protective cover plate; 71. Protective cylinder; 711. Outer cylinder; 712. Inner cylinder; 713. Countersunk hole; 714. Second spring; 715. Guide rod; 72. Pressure block; 8. Pad frame. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0036] Please refer to Figures 1-5 A temporary sealing device for reserved openings in building construction includes a cross-shaped frame 1, an outer hole sealing plate 5, and an inner hole sealing plate 4. The cross-shaped frame 1 can be a welded metal structure such as an I-beam or a U-shaped steel. The outer hole sealing plate 5 can be set independently or in conjunction with the inner hole sealing plate 4. When the outer hole sealing plate 5 is set independently, it can directly cover and seal the reserved opening. When the outer hole sealing plate 5 is set in conjunction with the inner hole sealing plate 4, it can seal the openings at both ends of the reserved opening. The specific configuration can be determined according to the specifications of the temporary opening or the on-site installation conditions.

[0037] The cross-shaped frame 1 is fixed to the foundation surface by fixing bolts 11 to ensure the stability of the overall structure. The outer hole sealing plate 5 is detachably set around the cross-shaped frame 1, and the inner hole sealing plate 4 is set at the bottom of the reserved hole. The outer hole sealing plate 5 and the inner hole sealing plate 4 isolate and seal the two ends of the reserved hole. After sealing, external rock and soil and other debris are prevented from entering the reserved hole. At the same time, rock and soil falling from the inner wall of the reserved hole can also be caught by the inner hole sealing plate 4 to prevent them from entering the tunnel. The outer diameter of the inner hole sealing plate 4 is adjustable. When sealing, the outer diameter of the inner hole sealing plate 4 is larger than the inner diameter of the temporary hole. Before sealing, the inner hole sealing plate 4 needs to be placed into the reserved hole. At this time, the outer diameter of the inner hole sealing plate 4 is smaller than the inner diameter of the reserved hole so that the inner hole sealing plate 4 can move in and out smoothly.

[0038] In this embodiment, the outer hole sealing plate 5 includes a plurality of plug-in plates 51, the plug-in plates 51 are 1 / 8 circle, the outer side of the cross-shaped frame 1 is provided with a slot 12, the plug-in plates 51 move towards the axis at the slot 12, and two adjacent plug-in plates 51 are connected by a U-shaped latch 52.

[0039] In other words, the cross-shaped frame 1 provides a basis for temporary sealing. When sealing the reserved hole, multiple plug-in plates 51 are inserted into the slot 12 in sequence. After insertion, the multiple plug-in plates 51 cooperate with the cross-shaped frame 1 to seal the reserved hole. The U-shaped latch 52 is designed to prevent the plug-in plates 51 from falling out of the reserved hole.

[0040] In this embodiment, the inner hole sealing disc 4 includes four movable fins 41 that move together. A gap 42 is provided between each pair of adjacent movable fins 41. The movable fins 41 are 1 / 4 circular. Under normal conditions, the circumference of the movable fins 41 falls down due to its own gravity. When in use, the movable fins 41 are in a horizontal state.

[0041] When the inner hole sealing disc 4 and the outer hole sealing disc 5 are used together (to seal both ends of a temporary hole), the inner hole sealing disc 4 must first be lowered into the temporary hole; such as Figure 3 As shown, before being lowered, the four movable fins 41 fall under their own weight and tilt downward as a whole. At this time, the circular cross-section becomes smaller. After the movable fins 41 pass through the temporary hole, the movable fins 41 are adjusted so that they flip upward to the horizontal. After flipping, the four movable fins 41 form a circle to block and seal the port inside the temporary hole.

[0042] Specifically, the center of the cross-shaped frame 1 is provided with a through adjusting stud 2. The bottom end of the adjusting stud 2 is inserted into the threaded sleeve 3. The bottom circumference of the threaded sleeve 3 is provided with multiple notches 32. The notches 32 correspond one-to-one with the movable fins 41. The movable fins 41 are provided with a central shaft 43. The central shaft 43 extends into the threaded sleeve 3 at the notches 32. The central shaft 43 is hinged to the threaded sleeve 3 within the notches 32 through a hinge shaft 33. At this time, when the adjusting stud 2 moves downward through the thread, it presses the end of the central shaft 43, causing the movable fin 41 to tilt upward. After tilting upward, the multiple movable fins 41 unfold to form a disc. At this time, the outer diameter of the unfolded disc is larger than the inner diameter of the reserved hole, thus sealing the inner hole opening. Since this device is a temporary seal, it needs to be disassembled. During disassembly, the adjusting stud 2 moves upward, causing the movable fin 41 to swing downward under its own weight, returning to its original position. Figure 3 The condition is such that it can be disassembled and removed from the pre-drilled hole.

[0043] It is understandable that the adjustment of the stud 2 is to drive the movable fin 41 to swing so that the inner hole sealing plate 4 can enter and exit the reserved hole. After entering, the movable fin 41 unfolds so that the inner hole sealing plate 4 seals the port of the reserved hole and prevents the rock and soil from falling from the outside or the inner wall of the hole. When disassembling, the rock and soil on the inner hole sealing plate 4 can be cleaned with tools.

[0044] Furthermore, in order to prevent the threaded sleeve 3 from rotating when the adjusting stud 2 rotates, at least one limiting bent rod 31 is provided on the outside of the threaded sleeve 3. One end of the limiting bent rod 31 is fixed to the outer wall of the threaded sleeve 3, and the other end extends upward and passes through the cross-shaped frame 1. The surface of the cross-shaped frame 1 is provided with a locking nut 21 that cooperates with the adjusting stud 2.

[0045] Because the limit bend rod 31 is set so that the position of the threaded sleeve 3 does not move, no matter how the adjusting stud 2 rotates, the threaded sleeve 3 will not rotate accordingly, thus satisfying the lifting and lowering of the adjusting stud 2 and ensuring the smooth unfolding or automatic retraction of the inner hole sealing plate 4.

[0046] In addition, since the adjusting stud 2 passes through the cross-shaped frame 1, a locking nut 21 that cooperates with the adjusting stud 2 is provided on the surface of the cross-shaped frame 1 to prevent the adjusting stud 2 from shifting up and down, so as to achieve vertical positioning.

[0047] In this embodiment, when the external hole sealing plate 5 is set independently, it directly covers and seals the outer port of the reserved hole. It is generally used for deeper or drilled reserved holes. After sealing, it prevents external people or objects from entering the reserved hole and achieves a temporary sealing effect. When the outer hole sealing plate 5 and the inner hole sealing plate 4 are installed together, they can seal the openings at both ends of the reserved hole. They are commonly used for reserved holes in vertical cable pipes or drainage pipes. After sealing, the reserved hole is isolated from the inside and outside, which can not only prevent foreign objects from entering the hole, but also prevent the rock and soil inside the reserved hole from falling into the underground pipeline, making it more practical.

[0048] Please refer to Figures 6-8 In this embodiment, the cross-shaped frame 1 is provided with a fixed frame 6 on its outside. The end of the cross-shaped frame 1 is connected to the fixed frame 6 by angle iron 61 and bolts. The surface of the fixed frame 6 is provided with a step 62. The step 62 is provided with a protective cover plate 7. After the protective cover plate 7 is engaged with the fixed frame 6 at the step 62, the protective cover plate 7 can cover the cross-shaped frame 1, the outer hole sealing plate 5 and other structures below. It can not only protect them, but also ensure that the surface is flat and can meet the needs of pedestrians or vehicles passing by.

[0049] like Figures 9-12 As shown, a protective cylinder 71 is provided at the bottom center of the protective cover plate 7. The protective cylinder 71 is located directly above the adjusting stud 2, and the end of the adjusting stud 2 extends into the protective cylinder 71. The protective cylinder 71 includes an outer cylinder 711 and an inner cylinder 712. The outer cylinder 711 is fixed to the bottom surface of the protective cover plate 7, and the inner cylinder 712 is disposed inside the outer cylinder 711. A second spring 714 is provided at the top of the inner cylinder 712. One end of the second spring 714 is fixed to the protective cover plate 7, and the other end is fixed to the top surface of the inner cylinder 712. The interior of the inner cylinder 712 is provided with a countersunk hole 713 for covering the adjusting stud 2. In this embodiment, the protective cover 7 is preferably made of steel plate, but it can also be made of stainless steel plate or wood of a certain thickness. When the protective cover 7 is subjected to external impact or pressure, the overall force will cause a certain amount of downward settlement. If there is no protective cylinder 71, the external force will be directly applied to the adjusting stud 2. After frequent impact and pressure, the adjusting stud 2 will loosen, causing the outer hole sealing plate 5 and the inner hole sealing plate 4 to loosen and affect the sealing effect.

[0050] After the protective cylinder 71 is installed, when the protective cover plate 7 is impacted or pressed by an external force, the outer cylinder 711 sinks downward with the external force, at which time the second spring 714 is compressed; in addition, since the adjusting stud 2 is stationary, when the outer cylinder 711 descends, the adjusting stud 2 will push against the inner cylinder 712 and bear the compression force of the second spring 714. Through the cooperation of the outer cylinder 711, the inner cylinder 712 and the second spring 714, the external impact force or pressing force can be effectively buffered, reducing the impact force on the adjusting stud 2.

[0051] Furthermore, the inner wall of the outer cylinder 711 is provided with multiple guide rods 715 to ensure that the outer cylinder 711 and the inner cylinder 712 can move vertically and buffer, so as to achieve a better buffering effect and ensure the sealing requirements of the reserved hole.

[0052] Please refer to this again. Figure 9 and Figure 13 The bottom of the protective cover plate 7 is also provided with four sets of buffer mechanisms to prevent the cross-shaped frame 1 from being bent under pressure. The four sets of buffer mechanisms are arranged in an array above the cross-shaped frame 1. Each set of buffer mechanisms includes a pressure block 72 fixed on the protective cover plate 7 and sliders 13 on both sides of the pressure block 72. The surface of the cross-shaped frame 1 is provided with a groove that cooperates with the slider 13. The slider 13 is slidably disposed on the cross-shaped frame 1 after cooperating with the groove. The bottom of the pressure block 72 is provided with a telescopic rod 14. The telescopic rod 14 extends downward through the cross-shaped frame 1. A first spring 15 is provided around the extension part of the telescopic rod 14.

[0053] In this embodiment, the pressure block 72 is in the shape of an isosceles trapezoid, and the slider 13 is in the shape of a right trapezoid. The inclined surface of the pressure block 72 is in contact with the inclined surface of the slider 13. When the protective cover 7 is pressed, the pressure block 72 moves downward. When the pressure block 72 moves downward, it will push the sliders 13 on both sides, so that the two sliders 13 move away from each other on the cross-shaped frame 1. At the same time, when the pressure block 72 moves downward, the telescopic rod 14 extends further downward. After it extends, the first spring 15 will be further compressed. The elastic thrust generated by the first spring 15 after compression will push the pressure block 72 vertically upward to buffer the external impact force, protect the cross-shaped frame 1 below, and prevent the cross-shaped frame 1 from deforming.

[0054] To further improve the buffering effect, a mutually bent insertion rod 16 is provided between the two sliders 13. The insertion rods 16 extend into the connecting cylinder 17. A tension spring is provided inside the connecting cylinder 17. The two ends of the tension spring are respectively fixed to the ends of the two insertion rods 16. When the pressure block 72 moves downward, the two sliders 13 move towards each other and pull the tension spring, wherein the insertion rods 16 never detach from the connecting cylinder 17.

[0055] In other words, the tension spring is located inside the connecting cylinder 17, and both ends of the tension spring are fixed to the ends of the insertion and pulling rod 16 inside the connecting cylinder. After fixing, the two sliders 13 are clamped by the insertion and pulling rod 16 and the tension spring, so that the pressure block 72 is pressed by the force to hold the two sliders 13.

[0056] As the pressure block 72 moves downward, the two sliders 13 move away from each other. After moving away, the tension spring is held by the two mutually displaced plug-in bent rods 16. At this time, the tension spring generates an elastic contraction force, which pulls the sliders 13 on both sides closer to each other, preventing the pressure block 72 from moving downward rapidly and continuously.

[0057] In other words, the telescopic rod 14 and the first spring 15 buffer the push of the pressure block 72 in the vertical direction, and the two sliders 13 (the plug-in bent rod 16 and the tension spring) pull each other in the horizontal direction, which can prevent the pressure block 72 from moving downward quickly from multiple angles and effectively prevent the cross-shaped frame 1 from being impacted and bent. The outer cylinder 711, inner cylinder 712, and second spring 714 can prevent the adjusting stud 2 from being impacted in the vertical direction. The overall protective cover 7 can provide all-round protection for the interior, making it safer.

[0058] like Figure 14 As shown, the reserved hole is a pre-reserved opening in the wall or other building structure. When sealing the hole, it is set vertically as a whole. After temporary sealing, both the outer and inner openings of the reserved hole are blocked, which can effectively prevent foreign objects from entering the hole or the building. Similarly, building materials inside the building cannot fall into the reserved hole, resulting in better safety protection.

[0059] like Figure 15 As shown, the reserved hole is a reserved hole for cable pipes or drainage pipes. The sealing method is the same as the above method, which can effectively prevent foreign objects from entering the hole or pipe.

[0060] like Figure 16As shown, when the reserved hole is too deep to be sealed internally, the external hole sealing disc can be used alone to achieve the same sealing effect, thus preventing foreign objects from accidentally entering the reserved hole.

[0061] As a preferred embodiment, a matching pad frame 8 is also provided around the fixed frame 6. The pad frame 8 is provided with a sloping surface around its perimeter. The pad frame 8 and the sloping surface can prevent the fixed frame 6 from forming steps with the ground, which is beneficial for pedestrians and vehicles to pass through.

[0062] As a preferred option, detachable limiting plates can also be installed at the four corners of the pad frame 8 to prevent the protective cover 7 from being removed at will.

[0063] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A temporary plugging device for a construction construction reserved hole, characterized in that, It includes a cross-shaped frame, an outer hole sealing plate, and an inner hole sealing plate. The outer hole sealing plate can be set independently or in conjunction with the inner hole sealing plate. The cross-shaped frame is fixed to the foundation surface by fixing bolts. The outer hole sealing plate is detachably set around the cross-shaped frame. The inner hole sealing plate is set at the bottom of the reserved hole. The outer hole sealing plate and the inner hole sealing plate isolate and seal the two ends of the reserved hole. The outer diameter of the inner hole sealing plate is adjustable. When sealing, the outer diameter of the inner hole sealing plate is larger than the inner diameter of the temporary hole.

2. The temporary sealing device for reserved openings in building construction according to claim 1, characterized in that, The external hole sealing plate includes multiple plug-in plates, each plug-in plate being 1 / 8 circle in shape. The outer side of the cross-shaped frame is provided with a slot, and the plug-in plate moves towards the axis at the slot. Two adjacent plug-in plates are connected by a U-shaped latch.

3. The temporary sealing device for reserved openings in building construction according to claim 1, characterized in that, The inner hole sealing disc includes four movable fins that move together. There is a gap between each pair of adjacent movable fins. The movable fins are 1 / 4 circle in shape. Under normal conditions, the circumference of the movable fins falls down due to their own gravity. When in use, the movable fins are in a horizontal state.

4. The temporary sealing device for reserved openings in building construction according to claim 3, characterized in that, A through-type adjusting stud is provided at the center of the cross-shaped frame. The bottom end of the adjusting stud is inserted into a threaded sleeve. The bottom circumference of the threaded sleeve has multiple notches, each of which corresponds to a movable fin. A central shaft is provided inside the movable fin. The central shaft extends into the threaded sleeve at the notch and is hinged to the threaded sleeve within the notch via a hinge shaft. When the adjusting stud moves downward through the thread, it presses down on the end of the central shaft, causing the movable fin to tilt upward. When the adjusting stud moves upward, the movable fin swings downward due to its own gravity.

5. The temporary sealing device for reserved openings in building construction according to claim 4, characterized in that, The threaded sleeve has at least one limiting bent rod on its outside. One end of the limiting bent rod is fixed to the outer wall of the threaded sleeve, and the other end extends upward and passes through the cross-shaped skeleton. The surface of the cross-shaped skeleton is provided with a locking nut that cooperates with the adjusting stud.

6. The temporary sealing device for reserved openings in building construction according to any one of claims 1-5, characterized in that, The cross-shaped frame is provided with a fixed frame on the outside. The ends of the cross-shaped frame are connected to the fixed frame by angle iron and bolts. The surface of the fixed frame is provided with a step, and a protective cover plate is provided inside the step.

7. The temporary sealing device for reserved openings in building construction according to claim 6, characterized in that, A protective cylinder is provided at the bottom center of the protective cover plate. The protective cylinder is located directly above the adjusting stud, and the end of the adjusting stud extends into the protective cylinder. The protective cylinder includes an outer cylinder and an inner cylinder. The outer cylinder is fixed to the bottom surface of the protective cover plate, and the inner cylinder is located inside the outer cylinder. A second spring is provided at the top of the inner cylinder. One end of the second spring is fixed to the protective cover plate, and the other end is fixed to the top surface of the inner cylinder. The interior of the inner cylinder has a countersunk hole covering the adjusting stud. The inner wall of the outer cylinder has multiple guide rods.

8. The temporary sealing device for reserved openings in building construction according to claim 7, characterized in that, The bottom of the protective cover is also provided with four sets of buffer mechanisms to prevent the cross-shaped frame from bending under pressure. The four sets of buffer mechanisms are arranged in an array above the cross-shaped frame. Each set of buffer mechanisms includes a pressure block fixed on the protective cover and sliders on both sides of the pressure block. The sliders are slidably mounted on the cross-shaped frame. The bottom of the pressure block is provided with a telescopic rod. The telescopic rod extends downward through the cross-shaped frame. A first spring is provided around the extension of the telescopic rod.

9. The temporary sealing device for reserved openings in building construction according to claim 8, characterized in that, Between the two sliders, there are also mutually bent plug-in rods, which extend into the connecting cylinder. The extension cylinder is equipped with a tension spring, and the two ends of the tension spring are respectively fixed to the ends of the two plug-in rods. When the pressure block moves downward, the two sliders move towards each other and pull the tension spring.

10. The temporary sealing device for reserved openings in building construction according to claim 6, characterized in that, The fixed frame is also surrounded by a matching pad frame, and the pad frame is surrounded by a sloping surface.

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