Butt-riveting heat-bridge-free pressurizing type anchor bolt

Abstract

The utility model discloses a butt-riveting heat-bridge-free pressurizing type anchor bolt which comprises a fixing sleeve, an expansion bolt and a pin, the expansion bolt is combined with the fixing sleeve, then the pin is inserted into the expansion bolt, and the expansion bolt is expanded, anchored and fastened, so that the fixing sleeve and the expansion bolt are tightly connected to form a whole. The front end of the expansion bolt expands to play a retaining role, the pin is driven into the expansion bolt to connect the fixing sleeve and the expansion bolt through expansion, and the pin can serve as a supporting rod to bear pressure and resist pressure and tension at the two ends, so that the fixing sleeve and the expansion bolt are connected more firmly, and the fixing sleeve and the expansion bolt are tightly connected to form a whole. The anchor bolt is used for fastening various fiber weak pressure type plates or single plates with different thicknesses, can bear pressure and resist tension after being riveted, improves the integrity, the compression resistance and the tensile strength of the plates, and is simple in structure, convenient to process, low in cost and suitable for mass production in factories and mass use in construction.

Description

Technical Field

[0001] The utility model relates to the technical field of building wall insulation, in particular to a riveted non-thermal bridge pressurized anchor bolt. Background Art

[0002] In view of the fact that different systems have certain requirements for the compressive and tensile strength of wall insulation panels in the construction field, the single-rod structure is currently mainly used in the building wall insulation structure, that is, a single straight rod support form is directly used, and only the strength of the straight rod itself is relied on to resist external pressure. On the one hand, it is impossible to achieve multi-plate riveting, and on the other hand, it is impossible to solve the pressure-bearing and tensile resistance problems. In addition, the straight rod made of metal materials will produce "thermal bridges", which poses a safety hazard to the building walls. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a riveted thermal bridge-free pressurized anchor bolt, including a fixed sleeve, an expansion bolt and a pin; the expansion bolt is compounded with the fixed sleeve, and then the pin is inserted into the expansion bolt, and the expansion bolt is expanded and anchored, so that the fixed sleeve and the expansion bolt are tightly connected to form a whole.

[0004] Preferably, the fixed sleeve comprises a first clamping end and a sleeve end, and the first clamping end and the sleeve end form a T-shaped structure.

[0005] Preferably, the outer diameter of the first clamping end is greater than the outer diameter of the sleeve end.

[0006] Preferably, a first inner hole extending to the first clamping end is provided inside the sleeve end, a tapered hole is provided inside the first inner hole, and a second inner hole is provided at the other end of the tapered hole.

[0007] Preferably, the diameter of the second inner hole is smaller than the diameter of the first inner hole.

[0008] Preferably, the fixed sleeve is made of a corrosion-resistant polymer material selected from polypropylene, polyethylene and polyamide.

[0009] Preferably, the expansion bolt comprises a second clamping end and a bolt rod, the rear end of the bolt rod is connected to the second clamping end, and the second clamping end and the bolt rod form a T-shaped structure.

[0010] Preferably: a straight hole for inserting a pin is further provided in the expansion bolt, a bolt head is provided at one end of the expansion bolt away from the second clamping end, a plurality of expansion grooves are arranged along the axial direction of the bolt rod on the outer wall at the front end of the bolt rod, and reinforcing ribs are further provided in the expansion grooves.

[0011] Preferably, the expansion plug is made of a corrosion-resistant polymer material selected from one of polypropylene, polyethylene and polyamide.

[0012] Preferably, the front end of the pin is provided with a head, and the outer wall of the head is provided with a thread structure or a straight mesh structure.

[0013] Technical effects and advantages of the utility model:

[0014] 1. In the utility model, the pin is driven into the expansion bolt, so that the front end of the expansion bolt expands, which plays a role of stopping retreat. In addition, the pin driven into the expansion bolt can not only rely on the expansion connection to fix the sleeve and the expansion bolt, but also can serve as a support rod to bear pressure and resist the pressure and tension at both ends, so that the connection between the fixed sleeve and the expansion bolt is more firmly established.

[0015] 2. In the utility model, the fixed sleeve and the expansion bolt are tightly connected to form a whole, which is used to fasten multiple pieces of various fiber weak-compression plates or single plates of different thicknesses. After riveting, they can withstand both pressure and tension, thereby improving the integrity and compression and tensile strength of the plates. The anchor bolt has a simple structure, is easy to process and has a low cost, and is suitable for mass production in factories and a large number of uses in construction.

[0016] 3. In the utility model, the fixed sleeve and the expansion bolt are made of corrosion-resistant polymer materials with low thermal coefficients, which have a heat-insulating effect, can effectively prevent or reduce the generation of "thermal bridges", and improve the safety of building insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a heat-bridge-free pressurized anchor bolt provided in an embodiment of the present application;

[0018] Figure 2 It is a structural schematic diagram of a fixed sleeve in a riveted thermal bridge-free pressurized anchor provided in an embodiment of the present application;

[0019] Figure 3 It is a schematic diagram of the structure of an expansion bolt in a riveted thermal bridge-free pressurized anchor bolt provided in an embodiment of the present application;

[0020] Figure 4 It is a schematic diagram of the structure of the pin in the riveted thermal bridge-free pressurized anchor provided in an embodiment of the present application.

[0021] In the figure: 1. fixed sleeve; 11. first clamping end; 12. sleeve end; 13. first inner hole; 14. second inner hole; 15. tapered hole; 2. expansion bolt; 21. second clamping end; 22. bolt rod; 23. straight hole; 24. bolt head; 25. opening; 26. expansion groove; 27. reinforcing rib; 3. pin; 31. head. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0023] See also Figure 1 As shown, in this embodiment, a riveted thermal bridge-free pressurized anchor bolt is provided, including a fixed sleeve 1, an expansion bolt 2 and a pin 3. The expansion bolt 2 is compounded with the fixed sleeve 1, and then the pin 3 is inserted into the expansion bolt 2. The expansion bolt 2 is expanded and anchored to tighten. The fixed sleeve 1 and the expansion bolt 2 are tightly connected to form a whole, which is used to fasten multiple pieces of various fiber weak-compression plates or single plates of different thicknesses. After riveting, it can withstand both pressure and tension, thereby improving the integrity and compressive and tensile strength of the plates. The anchor bolt has a simple structure, is easy to process and has low cost, and is suitable for mass production in factories and a large number of uses in construction.

[0024] See also Figure 2 As shown, the fixed sleeve 1 includes a first clamping end 11 and a sleeve end 12, the first clamping end 11 and the sleeve end 12 form a T-shaped structure, the outer diameter of the first clamping end 11 is larger than the outer diameter of the sleeve end 12, the sleeve end 12 is provided with a first inner hole 13 extending to the first clamping end 11, a tapered hole 15 is provided at the inner side of the first inner hole 13, the longitudinal cross-section of the tapered hole 15 is trapezoidal, and a second inner hole 14 is provided at the other end of the tapered hole 15, and the diameter of the second inner hole 14 is smaller than the diameter of the first inner hole 13.

[0025] Specifically, the expansion plug 2 is inserted into the fixed sleeve 1 from the second inner hole 14. The expansion plug 2 is squeezed by the inner wall of the second inner hole 14 and deformed. Then, it passes through the tapered hole 15 and enters the first inner hole 13. The front end of the expansion plug 2 recovers its shape, completing the compounding of the expansion plug 2 and the fixed sleeve 1. When the expansion plug 2 is pulled outward, the expansion plug 2 is squeezed by the tapered hole 15, which limits the expansion plug 2, thereby improving the stability of the connection between the expansion plug 2 and the fixed sleeve 1.

[0026] See also Figure 3As shown, the expansion bolt 2 includes a second clamping end 21 and a bolt rod 22. The rear end of the bolt rod 22 is connected to the second clamping end 21. The second clamping end 21 and the bolt rod 22 form a T-shaped structure. A straight hole 23 for inserting the pin 3 is also provided in the expansion bolt 2. A bolt head 24 is provided at one end of the expansion bolt 2 away from the second clamping end 21. The bolt head 24 is conical. At least one opening 25 is provided at the bolt head 24, and the opening 25 is connected to the straight hole 23. A plurality of expansion grooves 26 are arranged on the outer wall of the front end of the bolt rod 22 along the axial direction of the bolt rod 22, and reinforcing ribs 27 are also provided in the expansion grooves 26. The strength of the expansion grooves 26 is improved by the reinforcing ribs 27.

[0027] Specifically, the bolt head 24 of the expansion bolt 2 is inserted into the fixed sleeve 1 from the second inner hole 14, and the tapered bolt head 24 is easier to enter the second inner hole 14, and the opening 25 provided makes the bolt head 24 easy to deform. The bolt head 24 is squeezed and deformed by the second inner hole 14. When the expansion groove 26 of the expansion bolt 2 contacts the second inner hole 14, it is squeezed and deformed by the second inner hole 14, and the straight hole 23 is deformed, so that the bolt head 24 and the expansion groove 26 enter the first inner hole 13 from the second inner hole 14 through the tapered hole 15, and the bolt head 24 and the expansion groove 26 restore their shapes. When the expansion bolt 2 is pulled outward, the expansion groove 26 contacts the inner wall of the tapered hole 15, limiting the expansion bolt 2, thereby improving the stability of the connection between the expansion bolt 2 and the fixed sleeve 1, and the expansion bolt 2 can be inserted into the first inner hole 13 at different depths according to multiple plates of different thicknesses, so that the inner walls of the first clamping end 11 and the second clamping end 21 are always close to the outer wall of the plate.

[0028] See also Figure 4 As shown, the front end of the pin 3 is provided with a head 31, and the outer wall of the head 31 is provided with a threaded structure or a straight mesh structure. After the pin 3 is driven into the straight hole 23 of the expansion bolt 2, the front end of the expansion bolt 2 expands, and the expansion groove 26 is close to the inner wall of the first inner hole 13 to play a role of stopping retreat. In addition, the pin 3 driven into the expansion bolt 2 can rely on expansion to connect the fixed sleeve 1 and the expansion bolt 2, and can also serve as a support rod to bear pressure and resist the pressure and tension at both ends, so that the connection between the fixed sleeve 1 and the expansion bolt 2 is more firmly established.

[0029] Furthermore, the fixed sleeve 1 is made of a corrosion-resistant polymer material with a low thermal coefficient, including but not limited to one of the acid-resistant and alkali-resistant ones such as polypropylene, polyethylene, and polyamide, and the expansion plug 2 is made of a corrosion-resistant polymer material with a low thermal coefficient, including but not limited to one of the acid-resistant and alkali-resistant ones such as polypropylene, polyethylene, and polyamide.

[0030] Thermal coefficient refers to the coefficient of thermal expansion of a material when heated, that is, the amount of change in length or volume per unit temperature change of the material. Materials with lower thermal coefficients respond less to temperature changes and maintain more stable size and shape.

[0031] The inventor of the present invention has found that by making the fixed sleeve 1 and the expansion plug 2 from corrosion-resistant polymer materials with a low thermal coefficient, it is possible to block the thermal bridge, thereby protecting the building from heat preservation.

[0032] It should be noted that the so-called "thermal bridge" is, in layman's terms, the path that is most likely to conduct heat. These parts have strong heat transfer capabilities, dense heat flow, and low internal surface temperatures, so they are called thermal bridges. To cut off thermal bridges, you add thermal insulation (or low thermal conductivity) materials to these parts to cut off these thermal bridges.

[0033] Since the temperature of the inner surface of the thermal bridge is relatively low, during the cold winter, when the temperature there is lower than the dew point, water vapor will condense on the surface to form condensation, which will then easily stick to the dust in the air, gradually turning black and causing mold and mildew. Parts with serious thermal bridges will even seep water during the cold winter, which is irreversible damage to the building's insulation.

[0034] The working principle of the utility model is:

[0035] In the utility model, the fixed sleeve 1 and the expansion bolt 2 are compounded and the pin 3 is inserted and then expanded and anchored to tighten them, so that the fixed sleeve 1 and the expansion bolt 2 are tightly connected to form a whole, which is used to fasten multiple pieces of various fiber weak-compression plates or single plates of different thicknesses. After riveting, they can withstand pressure and tension, thereby improving the integrity and compression and tensile strength of the plates. The anchor bolt has a simple structure, is easy to process, and is low in cost. It is suitable for mass production in factories and a large number of uses in construction. In addition, the fixed sleeve 1 and the expansion bolt 2 are made of materials with a low thermal coefficient and have a heat-insulating effect. They can effectively prevent or reduce the generation of "thermal bridges" and improve the safety of building insulation.

[0036] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A riveted thermal bridge-free pressurized anchor bolt, comprising: It comprises a fixed sleeve (1), an expansion bolt (2) and a pin (3); The expansion plug (2) is combined with the fixed sleeve (1), and the pin (3) is inserted into the expansion plug (2), and the expansion plug (2) is expanded and anchored to be fastened, so that the fixed sleeve (1) and the expansion plug (2) are tightly connected to form a whole.

2. The riveting thermal bridge-free pressurized anchor bolt according to claim 1, characterized in that: The fixed sleeve (1) comprises a first clamping end (11) and a sleeve end (12), and the first clamping end (11) and the sleeve end (12) form a T-shaped structure.

3. The riveting thermal bridge-free pressurized anchor bolt according to claim 2, characterized in that: The outer diameter of the first clamping end (11) is greater than the outer diameter of the sleeve end (12).

4. The riveting thermal bridge-free pressurized anchor bolt according to claim 3 is characterized in that: The sleeve end (12) is provided with a first inner hole (13) extending to the first clamping end (11), a tapered hole (15) is provided inside the first inner hole (13), and a second inner hole (14) is provided at the other end of the tapered hole (15).

5. The riveting thermal bridge-free pressurized anchor bolt according to claim 4 is characterized in that: The diameter of the second inner hole (14) is smaller than the diameter of the first inner hole (13).

6. The riveting thermal bridge-free pressurized anchor bolt according to claim 1, characterized in that: The fixed sleeve (1) is made of a corrosion-resistant polymer material selected from one of polypropylene, polyethylene and polyamide.

7. The riveting thermal bridge-free pressurized anchor bolt according to claim 1, characterized in that: The expansion bolt (2) comprises a second clamping end (21) and a bolt rod (22), the rear end of the bolt rod (22) is connected to the second clamping end (21), and the second clamping end (21) and the bolt rod (22) form a T-shaped structure.

8. The riveting thermal bridge-free pressurized anchor bolt according to claim 7, characterized in that: The expansion plug (2) is also provided with a straight hole (23) for inserting a pin (3), and a plug head (24) is provided at one end of the expansion plug (2) away from the second clamping end (21). The front end outer wall of the bolt rod (22) is provided with a plurality of expansion grooves (26) arranged along the axial direction of the bolt rod (22), and reinforcing ribs (27) are also provided in the expansion grooves (26).

9. The riveting thermal bridge-free pressurized anchor bolt according to claim 1, characterized in that: The expansion plug (2) is made of a corrosion-resistant polymer material selected from one of polypropylene, polyethylene and polyamide.

10. The riveting thermal bridge-free pressurized anchor bolt according to claim 1, characterized in that: The front end of the pin (3) is provided with a head (31), and the outer wall of the head (31) is provided with a thread structure or a straight mesh structure.

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