A device for waterproofing of a threaded rock bolt node

Abstract

The utility model relates to the field of anchor rod waterproof, specifically relates to a device for threaded anchor rod node waterproof, including rubber gasket, steel backing plate, threaded anchor rod and nut. Rubber gasket is equipped with rubber boss, and rubber boss is the shape of the gradual change of one end big one end small, and the big end of rubber boss is close to rubber gasket, and rubber boss is equipped with first through -hole, and first through -hole penetrates rubber boss and rubber gasket, steel backing plate is equipped with second through -hole, and second through -hole penetrates the thickness direction of steel backing plate, and rubber boss can be inserted into second through -hole, threaded anchor rod can be inserted into first through -hole, and nut can be set up on threaded anchor rod and be connected through thread. The utility model can form the sealing effect between steel backing plate and the structure of being anchored and between steel backing plate and threaded anchor rod through the extrusion of steel backing plate to rubber gasket and the extrusion of the inner wall of second through -hole to rubber boss, and further effectively reduce the leakage condition, improve the waterproof performance of threaded anchor rod node.

Description

Technical Field

[0001] This utility model relates to the field of anchor waterproofing, and in particular to a device for waterproofing threaded anchor joints. Background Technology

[0002] In the field of construction engineering, anti-buoyancy anchors are key structures for resisting the buoyancy of groundwater, and the quality of their joint waterproofing has a direct and crucial impact on the durability and safety of underground projects. Currently, waterproofing technology for underground engineering has established a synergistic development system encompassing materials, structure, and processes. However, when performing joint waterproofing on components with special stress characteristics, such as precision-rolled threaded steel bars, numerous challenges arise. Precision-rolled threaded steel bars have trapezoidal thread profiles on their surface, forming a complex three-dimensional interface when connected to anchor plates and nuts. Traditional planar waterproofing structures, such as water-stop rings and waterproof membranes, cannot tightly fit the thread gaps, leading to a high susceptibility to leakage at the connection points of the threaded steel bars, anchor plates, and nuts. Utility Model Content

[0003] The purpose of this invention is to overcome the problem that leakage is very likely to occur at the connection between the threaded steel, anchor plate and nut in the prior art, and to provide a device for waterproofing threaded anchor nodes.

[0004] This utility model provides a device for waterproofing threaded anchor bolt joints, comprising: A rubber gasket, wherein a rubber boss is provided on one side of the rubber gasket, the rubber boss has a gradually changing shape with one end larger and the other end smaller, the larger end of the rubber boss is close to the rubber gasket, and the rubber boss is provided with a first through hole, the first through hole passing through the rubber boss and the rubber gasket. A steel pad, wherein the steel pad has a second through hole that extends through the thickness direction of the steel pad, and the shape and size of the second through hole are adapted to the shape and size of the rubber boss, and the rubber boss can be inserted into the second through hole; A threaded anchor rod and a nut are provided. The threaded anchor rod can be inserted into the first through hole, and the nut is connected to the threaded anchor rod by threads. The nut is used to compress the steel pad.

[0005] This invention provides a device for waterproofing threaded anchor bolt joints. A rubber gasket is placed on the surface of the anchored structure. A rubber boss is inserted into a second through hole, allowing a steel pad to be fitted onto the rubber boss, thus positioning the rubber gasket between the steel pad and the surface of the anchored structure. The threaded anchor bolt passes through the first through hole on the rubber boss and is anchored within the anchored structure. A nut is fitted onto the threaded anchor bolt; rotating the nut applies a force that compresses the steel pad towards the anchored structure. Under this compressive force, the rubber gasket undergoes elastic deformation, filling the gap between the steel pad and the surface of the anchored structure, thereby creating a seal. Meanwhile, the rubber boss has a gradually tapering shape, larger at one end and smaller at the other, and the shape and size of the second through hole are adapted to the shape and size of the rubber boss. During the compression of the steel pad, the inner wall of the second through hole exerts a pressure on the rubber boss towards the threaded anchor rod, causing the rubber boss to also undergo elastic deformation, thereby filling the gap between the steel pad and the threaded anchor rod and achieving a sealing effect. The larger end of the rubber boss is close to the rubber gasket to ensure that the second through hole can be properly fitted onto the rubber boss.

[0006] This utility model provides a device for waterproofing threaded anchor bolt joints. Through the squeezing action of the steel pad on the rubber gasket and the squeezing action of the inner wall of the second through hole on the rubber boss, a sealing effect can be formed between the steel pad and the anchored structure, and between the steel pad and the threaded anchor bolt. This effectively reduces leakage at the connection between the steel pad, the threaded anchor bolt, and the nut, and improves the waterproof performance of the threaded anchor bolt joint.

[0007] The rubber boss can be frustum-shaped or pyramidal-shaped. Regardless of the shape, the key is to ensure that the second through hole can apply a pressure towards the threaded anchor rod to the rubber boss, thereby filling the gap between the steel pad and the threaded anchor rod.

[0008] Preferably, the rubber boss is frustum-shaped. Since the shape and size of the second through hole are adapted to the shape and size of the rubber boss, the second through hole is also frustum-shaped. Compared to a truncated pyramid shape, the frustum-shaped rubber boss can be subjected to good compression at all positions along the circumferential direction under the compression action of the inner wall of the second through hole, thereby achieving a better sealing effect.

[0009] Preferably, the outer wall of the rubber boss is provided with a first annular protrusion, which is arranged circumferentially along the rubber boss. In this design, since the first annular protrusion protrudes from the outer wall of the rubber boss, when the rubber boss is compressed, the inner wall of the second through hole will preferentially contact the first annular protrusion and generate compression. Given that the first annular protrusion is circumferentially arranged, during the compression process, the first annular protrusion can be uniformly stressed and deformed around the rubber boss, thereby forming a complete annular sealing structure, ensuring the continuity of the seal, further enhancing the sealing performance, and significantly improving the anti-leakage effect.

[0010] Preferably, a second annular protrusion is provided on both sides of the rubber gasket, and the second annular protrusion is arranged around the rubber boss. In this design, since the second annular protrusion protrudes from both sides of the rubber gasket, when the steel pad compresses the rubber gasket, the surfaces of the steel pad and the anchored structure will preferentially contact the second annular protrusion and generate compression. Given that the second annular protrusion is arranged around the rubber boss, a complete annular sealing structure can be formed between the rubber gasket and the steel pad, and between the rubber gasket and the surface of the anchored structure, during the compression process, ensuring the continuity of the seal, further enhancing the sealing performance, and significantly improving the anti-leakage effect.

[0011] The cross-sectional shape of the first annular protrusion and the second annular protrusion can be triangular, rectangular or semi-circular.

[0012] Preferably, both the first annular protrusion and the second annular protrusion have a semi-circular cross-sectional shape. Compared to triangular and rectangular cross-sectional shapes, the semi-circular cross-section used in this design has a rounded shape, which can better fill the tiny gaps between the contact surfaces, forming a tighter seal and effectively preventing liquid leakage.

[0013] Preferably, the protrusion height of both the first annular protrusion and the second annular protrusion is 2mm-4mm.

[0014] Preferably, the inner wall of the first through hole is provided with threads that match the threaded anchor rod. In this design, when the threaded anchor rod is screwed into the first through hole, the threads of the two mesh together. This meshing effectively fills the gap between the inner wall of the first through hole and the threaded anchor rod, thereby further optimizing the sealing environment between the rubber boss and the threaded anchor rod, and thus greatly enhancing the sealing effect of the rubber boss on the threaded anchor rod.

[0015] Both the rubber gasket and the rubber boss can be made of ordinary rubber or a composite material containing water-swellable rubber.

[0016] Preferably, both the rubber gasket and the rubber boss are made of water-swellable rubber. In this design, the water-swellable rubber component can slowly expand upon contact with water, further compressing the gaps and achieving a dual waterproof effect of "mechanical interlocking + expansion sealing".

[0017] The planar shape of the rubber pad and the steel plate can be circular or square.

[0018] Preferably, both the rubber gasket and the steel pad are square in shape. Compared to a circle, the square design simplifies the process in common processing steps such as cutting and stamping, reduces the requirements for processing equipment, and enables more efficient production, thereby effectively reducing processing costs and improving production efficiency.

[0019] Preferably, the thickness of the rubber gasket is 4mm-6mm, and the thickness of the steel pad is 12mm-20mm.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a device for waterproofing threaded anchor bolt joints. Through the squeezing action of the steel pad on the rubber gasket and the squeezing action of the inner wall of the second through hole on the rubber boss, a sealing effect can be formed between the steel pad and the anchored structure, and between the steel pad and the threaded anchor bolt. This effectively reduces leakage at the connection between the steel pad, the threaded anchor bolt, and the nut, and improves the waterproof performance of the threaded anchor bolt joint. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a device for waterproofing threaded anchor bolt nodes.

[0022] Figure 2 This is a cross-sectional view of the steel pad cut along the axis of symmetry.

[0023] Figure 3 This is a cross-sectional view of the rubber gasket cut along its axis of symmetry.

[0024] Marked in the image: 1-Subbase layer, 2-Rubber gasket, 201 - Rubber boss, 202 - First through hole, 203 - First annular protrusion, 204 - Second annular protrusion. 3-Steel pad, 301 - Second through hole, 4-nut, 5-Threaded anchor bolt, 6-Casing, 7-Anchored structure, 8-Anchor hole. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0026] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0028] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0029] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0030] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0031] Example 1 like Figures 1 to 3 As shown, a device for waterproofing threaded anchor bolt nodes includes a rubber gasket 2, a steel pad 3, a threaded anchor bolt 5, and a nut 4.

[0032] A rubber boss 201 is provided on one side of the rubber gasket 2. The rubber boss 201 has a gradually decreasing shape, with one end larger than the other. The larger end of the rubber boss 201 is closer to the rubber gasket 2. The rubber boss 201 has a first through hole 202, which passes through both the rubber boss 201 and the rubber gasket 2. Specifically, the rubber boss 201 is located at the center of the rubber gasket 2. The first through hole 202 is located at the central axis of the rubber boss 201, and the axis of the first through hole 202 is perpendicular to the plane of the rubber gasket 2.

[0033] The steel pad 3 has a second through hole 301 that extends through the thickness of the steel pad 3. The shape and size of the second through hole 301 are adapted to the shape and size of the rubber boss 201, allowing the rubber boss 201 to be inserted into the second through hole 301. The second through hole 301 also has a gradually changing shape, with one end larger than the other, allowing the rubber boss 201 to be inserted into the second through hole 301 from the end with the larger diameter. The second through hole 301 is located at the center of the steel pad 3, and its axis is perpendicular to the plane of the steel pad 3. The steel pad 3 can be made of Q355B steel.

[0034] The threaded anchor rod 5 can be inserted into the first through hole 202. The nut 4 is connected to the threaded anchor rod 5 by threads, and the nut 4 is used to compress the steel pad 3. Specifically, the threaded anchor rod 5 can be a finely rolled threaded steel bar with trapezoidal thread teeth on its surface. The nut 4 can be made of 40Cr alloy steel.

[0035] In an optional embodiment, the rubber boss 201 can be frustum-shaped. Specifically, the outer contour of the cross-section of the rubber boss 201 and the cross-section of the second through hole 301 are both circular. The outer contour diameter of the top surface of the rubber boss 201 is 4 mm larger than the top hole diameter of the second through hole 301, and the outer contour diameter of the bottom surface of the rubber boss 201 is 4 mm larger than the bottom hole diameter of the second through hole 301. The top hole diameter of the second through hole 301 is 2 mm larger than the diameter of the threaded anchor rod 5, and the bottom hole diameter of the second through hole 301 is 12 mm larger than the top hole diameter of the second through hole 301.

[0036] In an optional embodiment, a first annular protrusion 203 may be provided on the outer wall of the rubber boss 201, and the first annular protrusion 203 is arranged along the circumference of the rubber boss 201. Specifically, the number of first annular protrusions 203 may be one or more, and the multiple first annular protrusions 203 may be arranged at intervals along the height direction of the rubber boss 201, with an interval distance of 4mm-5mm.

[0037] In an optional embodiment, a second annular protrusion 204 may be provided on both sides of the rubber gasket 2, and the second annular protrusion 204 is arranged around the rubber boss 201. Specifically, the second annular protrusion 204 is arranged around the central axis of the rubber boss 201. The number of second annular protrusions 204 on the top or bottom surface of the rubber gasket 2 may be one or more, and the multiple second annular protrusions 204 may be arranged at intervals along the radial direction of the rubber boss 201, with an interval distance of 5mm-10mm. The planar shape of the second annular protrusion 204 may be circular or square.

[0038] Specifically, the rubber gasket 2, the rubber boss 201, the first annular protrusion 203, and the second annular protrusion 204 are integrally molded from the same rubber material. The second annular protrusion 204 is arranged opposite to each other on both sides of the rubber gasket 2.

[0039] In an optional embodiment, the cross-sectional shape of both the first annular protrusion 203 and the second annular protrusion 204 can be semi-circular.

[0040] In an optional embodiment, the protrusion height of the first annular protrusion 203 and the second annular protrusion 204 can both be 2mm-4mm, specifically 2mm, 2.5mm, 3mm, 3.5mm, and 4mm.

[0041] In an optional embodiment, the inner wall of the first through hole 202 may be provided with threads that match the threaded anchor rod 5. Specifically, the thread is integrally formed from the same rubber material as the rubber boss 201.

[0042] In an optional embodiment, both the rubber gasket 2 and the rubber boss 201 may include water-swellable rubber in their materials. Specifically, both the rubber gasket 2 and the rubber boss 201 may be made of a composite material of butyl rubber and water-swellable rubber.

[0043] In an optional embodiment, both the rubber pad 2 and the steel pad 3 can be square in shape. Specifically, the planar dimensions of the rubber pad 2 are larger than those of the steel pad 3, ensuring that the rubber pad 2 can completely cover the bottom surface of the steel pad 3. The side length of the steel pad 3 can be 200mm, and the side length of the rubber pad 2 can be 250mm.

[0044] In an optional embodiment, the thickness of the rubber gasket 2 can be 4mm-6mm, specifically 4mm, 5mm, or 6mm. The thickness of the steel pad 3 can be 12mm-20mm, specifically 12mm, 14mm, 15mm, 16mm, 18mm, or 20mm.

[0045] Example 2 This embodiment describes the method of using the device for waterproofing threaded anchor bolt nodes as described in Embodiment 1, including the following steps: S1: Clean the rust and oil stains from the surface of the threaded anchor rod 5, which is already fixed in the anchoring hole 8 of the anchored structure 7, to ensure the integrity of the thread profile; construct a pad layer 1 around the surface of the anchoring hole 8 of the anchored structure 7, with the flatness error of the pad layer 1 not exceeding 2mm per 2m length. A sleeve 6 can be installed in the anchoring hole 8, which is used to reserve the position of the anchoring hole 8 when the anchored structure 7 is poured.

[0046] S2: Align the first through hole 202 of the rubber boss 201 on the rubber gasket 2 with the threaded anchor rod 5, and insert it along the axial direction of the threaded anchor rod 5, so that the rubber gasket 2 is laid flat on the pad layer 1. Align the second through hole 301 of the steel pad 3 with the threaded anchor rod 5, and insert it along the axial direction of the threaded anchor rod 5, and then align it with the rubber boss 201, and slowly press down until the steel pad 3 is completely attached to the rubber gasket 2, confirming that the first annular protrusion 203 is embedded in the second through hole 301 without deviation.

[0047] S3: Install the matching nut 4. First, tighten it with a wrench until the steel pad 3 and rubber gasket 2 are in close contact. Then, use a hydraulic jack to tension the gasket, so that the deformation of the first annular protrusion 203 and the second annular protrusion 204 reaches the predetermined value, forming a sealed interface. Before tensioning, the rubber gasket 2 is initially attached to the steel pad 3 and the threaded anchor rod 5. During the tensioning process, the nut 4 moves the steel pad 3 downward, applying vertical pressure to the rubber gasket 2 and applying pressure towards the threaded anchor rod 5 to the rubber protrusion 201. After being compressed, the rubber protrusion 201 expands laterally, filling the gap between the threaded anchor rod 5 and the steel pad 3. After tensioning, the first annular protrusion 203 and the second annular protrusion 204 maintain the predetermined deformation and form close contact with the steel pad 3 and the cushion layer 1 at the corresponding positions, blocking the groundwater seepage path.

[0048] This utility model uses the mechanical interlocking design of the rubber boss 201 and the second through hole 301 on the steel pad 3 to form an adaptive sealing interface, which solves the leakage problem of the thread gap of the threaded anchor rod 5 and effectively blocks the seepage path of groundwater along the connection between the threaded anchor rod 5, the steel pad 3 and the nut 4.

[0049] This invention addresses the critical node of the tensioning and anchoring end of the threaded anchor rod 5, forming a triple protection system of "protrusion filling - pad extrusion - deformation sealing." It eliminates the welding process required in traditional water-stopping methods, preventing heat sources from affecting the physical properties of the threaded anchor rod 5. Employing mechanical fitting and tensioning / extrusion processes significantly simplifies the construction process, reduces the technical requirements for construction personnel, and eliminates the safety hazards of on-site welding. It also solves the problem of premature expansion of the water-stop ring during rainy season construction, ensuring that construction is unaffected by weather and guaranteeing the continuity of project progress.

[0050] This invention reduces energy consumption and environmental pollution in welding processes, while eliminating the risks of hot work, meeting the requirements for construction safety and environmental protection, and has a significant social demonstration effect.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for waterproofing threaded anchor bolt joints, characterized in that, include: A rubber pad (2) is provided on one side of the rubber pad (2). The rubber pad (201) has a gradually changing shape with one end larger than the other. The larger end of the rubber pad (201) is close to the rubber pad (2). The rubber pad (201) is provided with a first through hole (202). The first through hole (202) passes through the rubber pad (201) and the rubber pad (2). A steel pad (3) is provided with a second through hole (301). The second through hole (301) penetrates the thickness direction of the steel pad (3). The shape and size of the second through hole (301) are adapted to the shape and size of the rubber boss (201). The rubber boss (201) can be inserted into the second through hole (301). The threaded anchor rod (5) and nut (4) are provided. The threaded anchor rod (5) can be inserted into the first through hole (202). The nut (4) is connected to the threaded anchor rod (5) by threads. The nut (4) is used to press the steel pad (3).

2. The device for waterproofing threaded anchor bolt nodes according to claim 1, characterized in that, The rubber boss (201) is frustum shaped.

3. The device for waterproofing threaded anchor bolt nodes according to claim 1, characterized in that, The outer wall of the rubber boss (201) is provided with a first annular protrusion (203), which is arranged around the circumference of the rubber boss (201).

4. The device for waterproofing threaded anchor bolt nodes according to claim 3, characterized in that, The rubber pad (2) is provided with a second annular protrusion (204) on both sides, and the second annular protrusion (204) is arranged around the rubber boss (201).

5. The device for waterproofing threaded anchor bolt nodes according to claim 4, characterized in that, The cross-sectional shape of the first annular protrusion (203) and the second annular protrusion (204) is semi-circular.

6. The device for waterproofing threaded anchor bolt nodes according to claim 4, characterized in that, The protrusion height of the first annular protrusion (203) and the second annular protrusion (204) is 2mm-4mm.

7. A device for waterproofing threaded anchor bolt nodes according to any one of claims 1-6, characterized in that, The inner wall of the first through hole (202) is provided with threads that match the threaded anchor rod (5).

8. The device for waterproofing threaded anchor bolt nodes according to claim 7, characterized in that, The materials of the rubber gasket (2) and the rubber boss (201) both include water-swellable rubber.

9. The device for waterproofing threaded anchor bolt nodes according to claim 7, characterized in that, The planar shape of both the rubber pad (2) and the steel pad (3) is square.

10. The device for waterproofing threaded anchor bolt nodes according to claim 7, characterized in that, The thickness of the rubber pad (2) is 4mm-6mm, and the thickness of the steel pad (3) is 12mm-20mm.

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