A bottom-expanding broken-bridge anti-seepage anchor device
By designing an expanded-bottom type thermal break anti-seepage anchor bolt device, and utilizing a combination of double-wall expanded-hole type expansion bolts and stepped rubber anti-seepage sleeves, the problems of water leakage and thermal insulation performance loss caused by anchor bolt installation on lightweight walls are solved, achieving efficient waterproofing and thermal insulation effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA SHANXI SIJIAN GRP
- Filing Date
- 2025-08-30
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, the installation of anchors on lightweight walls can easily lead to water leakage and loss of thermal insulation performance, especially in windy weather when the external wall insulation system is prone to falling off.
The expanded-bottom type thermal break anti-seepage anchor bolt device is adopted. Through the combination design of double-wall expanded-hole type expansion bolts and stepped rubber anti-seepage sleeves, a continuous thermal resistance barrier is formed. The synergistic effect of water-swellable sealing adhesive, inverted cone fireproof rubber plug and inorganic thermal insulation mortar, combined with the rotation of threaded self-tapping steel nails and the chemical bonding of resin capsules, achieves mechanical interlocking and chemical bonding.
It effectively blocks heat conduction between metal anchors and the wall, prevents moisture penetration, improves anchoring stability and thermal insulation performance, reduces gap formation, and ensures the airtightness of the external wall insulation layer.
Smart Images
Figure CN224531943U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anchor bolt technology, and in particular to an expanded-base type anti-seepage anchor bolt device for broken bridges. Background Technology
[0002] Anchors are connectors used to firmly fix components or equipment to a substrate. Through mechanical interlocking, chemical bonding, or friction, they provide reliable tensile, shear, or pull-out bearing capacity. They are indispensable basic connection components in fields such as construction, bridges, and industrial equipment installation. Among them, external wall insulation nails are one of the important accessories of external wall insulation systems. They are anchors specifically for fixing external wall insulation and are generally composed of galvanized screws, nylon expansion tubes, and fixing discs. The installation of external wall insulation anchors is completed by drilling holes in the structural wall with an electric drill, inserting the insulation nails into the holes, and hammering them in.
[0003] In existing technologies, building envelopes are made of lightweight walls such as autoclaved aerated concrete blocks, which are porous. During drilling, the lightweight walls may be enlarged or damaged. After the anchors are installed, the tensile strength will vary due to the characteristics of the wall itself. This can lead to the overall or partial detachment of the external wall insulation system in windy weather. In the use of external wall insulation, water leakage is more likely to occur at the anchors than in the larger areas, resulting in a higher risk of water leakage and a greater loss of insulation performance. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an expanded-bottom type anti-seepage anchor bolt device for broken bridges.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bottom-expanded type thermal break bridge anti-seepage anchor bolt device, comprising a lightweight wall, a leveling mortar is provided on one side of the lightweight wall, a thermal insulation layer is provided on one side of the leveling mortar, a crack-resistant mortar layer is provided on one side of the thermal insulation layer, and an anti-seepage component is provided on one side of the crack-resistant mortar layer. The seepage prevention component includes a stepped rubber seepage prevention sleeve, which is disposed inside one side of the crack-resistant mortar layer. A double-walled expansion bolt is fixedly connected to one side of the stepped rubber seepage prevention sleeve, and a threaded self-tapping steel nail is fixedly connected to the middle of one side of the stepped rubber seepage prevention sleeve.
[0006] As a further description of the above technical solution: The threaded self-tapping steel nail is installed inside the double-walled expanded hole type expansion bolt. A resin capsule is installed on one side of the inner wall of the double-walled expanded hole type expansion bolt, and a water-swellable sealing adhesive is installed on the other side of the inner wall of the double-walled expanded hole type expansion bolt. An inverted conical fireproof rubber plug is installed inside the stepped rubber anti-seepage sleeve.
[0007] As a further description of the above technical solution: One side of the inverted conical fireproof rubber blockage is provided with inorganic thermal insulation mortar, which fills the interior of the stepped rubber waterproof sleeve. A plastic disc is provided on one side of the inorganic thermal insulation mortar, and the plastic disc is fixedly connected to one side of the stepped rubber waterproof sleeve.
[0008] As a further description of the above technical solution: The double-walled expansion bolt is provided with a support pier on its outside, which is fixedly connected between the leveling mortar and the crack-resistant mortar layer.
[0009] As a further description of the above technical solution: The inverted conical fireproof rubber block is provided with a push-tightening component inside. The push-tightening component includes a polygonal groove, which is opened inside the inverted conical fireproof rubber block. A polygonal column is fixedly connected inside the polygonal groove.
[0010] As a further description of the above technical solution: The outer wall of the polygonal column has multiple recessed holes, and a spring is fixedly connected inside the recessed hole. One end of the spring is fixedly connected to a T-post, and a limit ring is fixedly connected to the inner wall of the recessed hole. One end of each of the T-posts is fixedly connected to a push plate.
[0011] As a further description of the above technical solution: The external fixed connection of the inverted conical fireproof rubber plug has multiple raised lines, and the inner wall of the stepped rubber anti-seepage sleeve has multiple grooves.
[0012] This utility model has the following beneficial effects: 1. This utility model, through the setting of anti-seepage components, and the integrated design of double-walled expanded-hole type expansion bolts and stepped rubber anti-seepage sleeves, forms a continuous thermal resistance barrier, effectively blocking the direct heat conduction between the metal anchor bolts and the wall. The water-swellable sealing adhesive expands in volume when the external wall insulation layer comes into contact with water, filling the gaps and preventing water penetration. The inverted cone-shaped fireproof rubber block and the inorganic thermal insulation mortar work together to form a physical water-blocking layer, so that even if there is local damage, it will not lead to leakage. When the threaded self-tapping steel nail rotates, the outer wall of the double-wall sleeve expands and triggers the resin capsule reaction, forming a composite anchoring effect of chemical bonding and mechanical interlocking.
[0013] 2. This utility model utilizes the elasticity of the rubber plug itself through the setting of the push-tightening component. Combined with the spring pushing the T-post, the elasticity is transmitted to the push plate. Under the further pushing action of the push plate on the rubber plug, it helps the rubber plug to firmly adhere to the inner wall of the stepped rubber seepage-proof sleeve, reducing the generation of gaps and improving water resistance. Moreover, the cooperation of the convex and groove helps to form an interlocking effect, thereby further improving the fit between the rubber plug and the stepped rubber seepage-proof sleeve. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the resin capsule structure proposed in this utility model; Figure 2 This is a partial structural diagram of the support pier connection point proposed in this utility model; Figure 3 This is a schematic diagram of the stepped rubber waterproof sleeve structure proposed in this utility model; Figure 4 This is a schematic diagram of the raised texture structure proposed in this utility model; Figure 5 This is a schematic diagram of the polygonal column structure proposed in this utility model; Figure 6 This is a schematic diagram of the T-column structure proposed in this utility model.
[0015] Legend: 1. Lightweight wall; 2. Leveling mortar; 3. Insulation layer; 4. Crack-resistant mortar layer; 5. Stepped rubber waterproof sleeve; 6. Double-walled expansion bolt with enlarged hole; 7. Threaded self-tapping nail; 8. Resin capsule; 9. Water-swellable waterproof sealant; 10. Inverted cone-shaped fireproof rubber plug; 11. Inorganic thermal insulation mortar; 12. Plastic disc; 15. Support pier; 16. Polygonal groove; 17. Polygonal column; 18. Concave hole; 19. Spring; 20. Limiting ring; 21. T-column; 22. Push plate; 23. Raised texture; 24. Groove. Detailed Implementation
[0016] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] As attached Figure 1-6 As shown, one embodiment of this utility model is provided: an expanded-bottom type thermal break bridge seepage prevention anchor bolt device, including a lightweight wall 1, a leveling mortar 2 is provided on one side of the lightweight wall 1, a thermal insulation layer 3 is provided on one side of the leveling mortar 2, a crack-resistant mortar layer 4 is provided on one side of the thermal insulation layer 3, and a seepage prevention component is provided on one side of the crack-resistant mortar layer 4. The seepage prevention component includes a stepped rubber seepage prevention sleeve 5 and a plastic sleeve with four fixing bolts. The stepped rubber seepage prevention sleeve 5 is set inside one side of the crack-resistant mortar layer 4. The stepped rubber seepage prevention sleeve 5 and the double-wall expanded hole type expansion bolt 6 cover the shear reinforcement and are integrally injection molded by machine. The double-wall expanded hole type expansion bolt 6 is fixedly connected to one side of the stepped rubber seepage prevention sleeve 5. The seepage prevention sleeve and the expansion bolt are made of PEEK material. The double-wall expanded hole type expansion bolt 6 is composed of a double-wall sleeve and a threaded self-tapping steel nail. The rear end of the double-wall sleeve is barbed and has a corrugated slit. The threaded self-tapping steel nail 7 is fixedly connected to the middle of one side of the stepped rubber seepage prevention sleeve 5.
[0018] As attached Figure 1 As shown, threaded self-tapping steel nails 7 are installed inside the double-walled expanded-hole type expansion bolt 6. A resin capsule 8 is installed on one side of the inner wall of the double-walled expanded-hole type expansion bolt 6, and a water-swellable sealing adhesive 9 is installed on the other side of the inner wall of the double-walled expanded-hole type expansion bolt 6. An inverted conical fireproof rubber plug 10 is installed inside the stepped rubber seepage-proof sleeve 5. Inorganic thermal insulation mortar 11 is installed on one side of the inverted conical fireproof rubber plug 10. The inorganic thermal insulation mortar 11 fills the interior of the stepped rubber seepage-proof sleeve 5. A plastic disc 12 is installed on one side of the inorganic thermal insulation mortar 11. The plastic disc 12 is fixedly connected to one side of the stepped rubber seepage-proof sleeve 5. The plastic disc 12 is placed between the first and second layers of alkali-resistant fiberglass mesh cloth and screwed into the four internally threaded plastic sleeves of the stepped rubber seepage-proof sleeve.
[0019] As attached Figure 2 As shown, the double-walled expansion bolt 6 is provided with a support pier 15 on its outside. The support pier 15 is fixedly connected between the leveling mortar 2 and the crack-resistant mortar layer 4, and is composed of a plastic annular sleeve and a polyurethane fireproof foaming agent.
[0020] As attached Figure 6 As shown, the inverted conical fireproof rubber blocker 10 has a push-tightening assembly inside. The push-tightening assembly includes a polygonal groove 16, which is opened inside the inverted conical fireproof rubber blocker 10. A polygonal column 17 is fixedly connected inside the polygonal groove 16 to provide support. Multiple recesses 18 are opened on the outer wall of the polygonal column 17 to protect the spring 19 and facilitate the retraction of the T-post 21. A spring 19 is fixedly connected inside the recesses 18. One end of the spring 19 is fixedly connected to the T-post 21 to facilitate the transmission of elastic force. A limit ring 20 is fixedly connected to the inner wall of the recesses 18. One end of the multiple T-posts 21 is fixedly connected to a push plate 22, which transmits the elastic force of the spring 19 through the push plate 11 to push the inverted conical fireproof rubber blocker 10.
[0021] As attached Figure 4 As shown, the external fixing connection of the inverted conical fireproof rubber plug 10 has multiple raised grooves 23, which facilitates insertion into the groove 24.
[0022] As attached Figure 3 As shown, the inner wall of the stepped rubber waterproof sleeve 5 is provided with multiple grooves 24, which cooperate with the raised texture 23.
[0023] Working principle: When the steel nail rotates and cuts into the substrate, the double-walled expansion bolt 6, composed of a double-walled sleeve and a threaded self-tapping steel nail, experiences mechanical interlocking due to the expansion of the outer wall of the double-walled sleeve under pressure. The barbed design at the rear end and the corrugated gap further enhance friction, preventing the anchor bolt from being pulled out. Simultaneously, the stepped rubber waterproof sleeve 5 adopts a two-step inverted conical structure, covering the expansion bolt and filling it with inorganic thermal insulation mortar and inverted conical fireproof rubber plug 10. Combined with the PEEK material sleeve, a double thermal resistance barrier is formed to block the heat conduction between the metal steel nail and the wall. The water-swellable sealant 9 in the front gap expands upon contact with water to seal the gap, and the inverted conical fireproof sealant at the rear end... The rubber plug 10 and the insulation layer 3 and the crack-resistant mortar layer 4 work together to block water, preventing seepage even if there is local damage. The chemical bonding is achieved by rotating the steel nail to puncture the resin capsule 8 at the rear end, releasing the adhesive to fill the gap between the sleeve and the substrate, and strengthening the anchoring stability. When the inverted conical fireproof rubber plug 10 is filled, it will fit tightly against the inner wall of the stepped rubber seepage-proof sleeve 5 through the elasticity of the rubber itself. At this time, the convex 23 and the groove 24 are engaged. When the spring 19 pushes the T column 21 and then pushes the push plate 22, the push plate 22 will transfer the pushing force to the fireproof rubber plug 10, thereby improving the sealing between it and the stepped rubber seepage-proof sleeve 5.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 type of expanded-base thermal break anti-seepage anchor bolt device, comprising a lightweight wall (1), wherein a leveling mortar (2) is provided on one side of the lightweight wall (1), a thermal insulation layer (3) is provided on one side of the leveling mortar (2), and a crack-resistant mortar layer (4) is provided on one side of the thermal insulation layer (3), characterized in that: A seepage-proof component is provided on one side of the crack-resistant mortar layer (4); The seepage prevention component includes a stepped rubber seepage prevention sleeve (5), which is disposed inside one side of the crack-resistant mortar layer (4). A double-walled expansion bolt (6) is fixedly connected to one side of the stepped rubber seepage prevention sleeve (5), and a threaded self-tapping steel nail (7) is fixedly connected to the middle of one side of the stepped rubber seepage prevention sleeve (5).
2. The expanded-base type thermal break bridge seepage prevention anchor bolt device according to claim 1, characterized in that: The threaded self-tapping steel nail (7) is installed inside the double-walled expanded hole type expansion bolt (6). A resin capsule (8) is provided on one side of the inner wall of the double-walled expanded hole type expansion bolt (6), and a water-swellable sealing adhesive (9) is provided on the other side of the inner wall of the double-walled expanded hole type expansion bolt (6). An inverted conical fireproof rubber plug (10) is provided inside the stepped rubber seepage-proof sleeve (5).
3. The expanded-base type thermal break bridge seepage prevention anchor bolt device according to claim 2, characterized in that: Inorganic thermal insulation mortar (11) is provided on one side of the inverted conical fireproof rubber block (10). The inorganic thermal insulation mortar (11) fills the interior of the stepped rubber anti-seepage sleeve (5). A plastic disc (12) is provided on one side of the inorganic thermal insulation mortar (11). The plastic disc (12) is fixedly connected to one side of the stepped rubber anti-seepage sleeve (5).
4. The expanded-base type thermal break bridge seepage prevention anchor bolt device according to claim 1, characterized in that: The double-walled expansion bolt (6) is provided with a support pier (15) on its outside, and the support pier (15) is fixedly connected between the leveling mortar (2) and the crack-resistant mortar layer (4).
5. The expanded-base type thermal break bridge seepage prevention anchor bolt device according to claim 2, characterized in that: The inverted conical fireproof rubber block (10) is provided with a push-tightening component, which includes a polygonal groove (16) and is located inside the inverted conical fireproof rubber block (10). A polygonal column (17) is fixedly connected inside the polygonal groove (16).
6. The expanded-base type thermal break bridge seepage prevention anchor bolt device according to claim 5, characterized in that: The outer wall of the polygonal column (17) is provided with a plurality of recesses (18), and a spring (19) is fixedly connected inside the recesses (18). A T-post (21) is fixedly connected to one end of the spring (19), and a limit ring (20) is fixedly connected to the inner wall of the recesses (18). A push plate (22) is fixedly connected to one end of the plurality of T-posts (21).
7. The expanded-base type thermal break bridge seepage prevention anchor bolt device according to claim 2, characterized in that: The external fixed connection of the inverted conical fireproof rubber plug (10) has multiple convex grooves (23), and the inner wall of the stepped rubber waterproof sleeve (5) has multiple grooves (24).