Instant mechanical fastening inverted-cone-shaped embedded steel bar glue chemical anchor bolt

Abstract

The invention discloses an instant mechanical fastening inverted-cone-shaped embedded steel bar glue chemical anchor bolt, and relates to the technical field of buildings. The instant mechanical fastening inverted-cone-shaped embedded steel bar glue chemical anchor bolt comprises an anchor bolt body, and the anchor bolt body is sequentially provided with an operation section, a structural part fastening section, a glue blocking section, a glue storage section and a mechanical fastening section in the axial direction of the anchor bolt body. The operation section is used for being connected with a tool to operate an anchor bolt, the structural part fastening section is used for assembling a structural part and an equipment base, the glue plugging section is arranged to be of a structure matched with an anchor hole, and a gap is formed between the glue storage section and the anchor hole and used for storing embedded steel bar glue; the mechanical fastening section comprises a thread structure arranged at the tail end of the anchor bolt body, the mechanical fastening section is sleeved with an expansion pipe, the inner wall of the expansion pipe is gradually shrunk to form an inclined inner wall structure, an inclined internal thread structure is arranged on the inner wall of the expansion pipe, and the expansion pipe is in threaded connection with the mechanical fastening section. A notch is formed in the end of the small-diameter side of the inner wall of the expansion pipe in the axial direction.

Description

Technical Field

[0001] This invention relates to the field of building technology, specifically to an instant mechanically fastening inverted cone-shaped rebar adhesive chemical anchor. Background Technology

[0002] Chemical anchors are post-anchoring connectors that use synthetic resin adhesive (also known as anchoring glue or anchoring mortar) to anchor steel bolts or rebars into drilled holes in concrete, rock, or other substrates. The typical construction procedure includes: drilling → hole cleaning → adhesive injection → bolt insertion → static curing until the adhesive is fully cured → applying the specified torque for mechanical tightening. Throughout the process, the curing time of the adhesive (usually ≥24 hours) is the bottleneck factor controlling the construction progress.

[0003] Existing chemical anchor systems mainly consist of the following three parts:

[0004] (1) Inverted conical screw or reinforcing bar: Its front end is mostly designed as a cone or stepped shape to form a mechanical locking key after the colloid is cured; (2) Two-component epoxy or vinyl ester anchoring adhesive: It is injected into the hole through a glue gun and forms a chemical bond with the concrete hole wall and screw surface after curing; (3) Gasket-nut assembly: After the colloid is completely cured, the nut is tightened by a torque wrench to generate the preload required by the design between the anchor and the substrate.

[0005] Currently, mainstream products both domestically and internationally follow the aforementioned "curing first, then tightening" construction logic. Some manufacturers add inverted cones or circumferential serrations to the screw surface to improve the pull-out resistance of the colloid after curing.

[0006] Therefore, the applicant recognizes that the existing chemical anchors have low construction efficiency, and torque can only be applied after the anchoring adhesive has fully cured. The curing time is significantly affected by ambient temperature, humidity and adhesive formulation, which seriously restricts subsequent processes and the turnover of machinery and equipment. Summary of the Invention

[0007] Therefore, embodiments of the present invention provide an immediate mechanical fastening inverted cone-shaped rebar adhesive chemical anchor to solve the problems existing in the above-mentioned technology.

[0008] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0009] A chemical anchor bolt for immediate mechanical fastening of inverted conical rebar adhesive, characterized in that it comprises an anchor bolt body, wherein the anchor bolt body is sequentially arranged along its axial direction with an operating section, a structural fastening section, an adhesive blocking section, an adhesive storage section, and a mechanical fastening section;

[0010] The operating section is used to connect the tool to operate the anchor bolt, the structural fastening section is used to assemble the structural component and the equipment base, the glue-sealing section is configured to be adapted to the anchor hole, and the glue-storing section is provided with a gap between itself and the anchor hole for storing the rebar adhesive.

[0011] The mechanical fastening section includes a threaded structure at the tail end of the anchor bolt body. An expansion tube is sleeved on the mechanical fastening section. The inner wall of the expansion tube gradually contracts to form an inclined inner wall structure. The inner wall of the expansion tube is provided with an inclined internal thread structure. The expansion tube is threadedly connected to the mechanical fastening section. The end of the expansion tube on the small diameter side of its inner wall is provided with a slit along the axial direction.

[0012] Optionally, the operating section is an external hexagonal socket, which is adapted to the structure of a power tool socket.

[0013] Optionally, the outer wall of the fastening section of the structural component is provided with a threaded structure, and the threaded structure of the fastening section of the structural component is adapted to the structural component to be assembled and the equipment base.

[0014] Optionally, the sealing section is a structure adapted to the shape of the anchor hole to be installed, and the gap between the sealing section and the wall of the anchor hole to be installed is 0.7mm.

[0015] Optionally, the glue storage section includes multiple glue storage units, which are connected end to end in sequence, and a gap is provided between the glue storage unit and the wall of the anchor hole to be installed.

[0016] Optionally, the glue storage unit is a frustum-shaped structure, and the vertical cross-section of the glue storage unit through the shaft is an inverted trapezoidal structure. The diameter of the upper bottom surface of the glue storage unit is 12.5mm, the radius of the lower bottom surface is 11.3mm, the larger diameter end of the uppermost glue storage unit is fixedly connected to the glue-blocking section, and the smaller diameter end of the lowermost glue storage unit is fixedly connected to the mechanical fastening section.

[0017] Optionally, the inner wall of the expansion tube is configured in two sections. The end into which the anchor bolt enters is configured as a straight tube structure adapted to the mechanical fastening section, and the end from which the anchor bolt extends is configured to gradually narrow, forming a structure with a large inlet and a small outlet.

[0018] Optionally, the cuts on the expansion tube are set in a straight line, that is, there are two cuts, and the two cuts are spaced 180 degrees apart;

[0019] Alternatively, the cuts on the expansion tube may be cross-shaped, meaning there are four cuts spaced 90 degrees apart.

[0020] Optionally, the outer wall of the expansion tube is provided with a textured pattern, and the maximum outer diameter of the expansion tube is 13.3 mm.

[0021] Optionally, a buffer section is provided between the fastening section and the sealing section of the structural component, and the buffer section and the sealing section are chamfered.

[0022] The present invention has at least the following beneficial effects:

[0023] This invention features an operating section that connects to a power tool sleeve. After the anchor bolt body is inserted into the anchor hole, the expansion tube of the mechanical fastening section at the bottom of the anchor bolt body contacts the anchor hole wall. During the rotation of the anchor bolt driven by the power tool, the anchoring adhesive in the anchor hole is distributed in the gap between the adhesive storage section and the hole wall. The adhesive blocking section prevents the anchoring adhesive from overflowing out of the hole. As the mechanical fastening section rotates, the expansion tube is locked inside the anchor hole. The threaded structure at the tail end of the anchor bolt body moves along the inclined surface inside the expansion tube, thereby opening the cut end of the expansion tube outward and further locking the expansion tube into the anchor hole wall, achieving immediate fastening. Subsequent cooling of the anchoring adhesive can further increase the fastening force, thus enabling continuous construction without waiting, resulting in high construction efficiency and being unaffected by ambient temperature. Attached Figure Description

[0024] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed herein.

[0026] Figure 1 This is a schematic diagram of the anchor body structure according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the expansion tube according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of an expansion tube structure according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the bottom structure of the expansion tube according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the beam bottom surface installation state structure according to one embodiment of the present invention;

[0032] Figure 7This is a schematic diagram of the beam top surface installation state structure according to one embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the beam side installation state according to one embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Operating section; 2. Structural component fastening section; 3. Adhesive sealing section; 4. Adhesive storage section; 5. Mechanical fastening section; 6. Expansion tube; 7. Incision; 8. Buffer section; 9. Rebar adhesive. Detailed Implementation

[0036] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0037] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," "fourth," etc. (if present), in the specification, claims, and accompanying drawings of this invention are intended to distinguish the objects referred to. For schemes with a sequential flow, this terminology need not be interpreted as describing a specific order or sequence; for schemes with device structures, this terminology does not distinguish between matters of importance or positional relationships.

[0038] Furthermore, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or apparatuses, or steps or units added based on further optimizations of the inventive concept.

[0039] like Figures 1-8 As shown, this invention discloses an instant mechanical fastening inverted cone-shaped rebar adhesive 9 chemical anchor, which includes an anchor body, wherein the anchor body is arranged in sequence along its axial direction as an operation section 1, a structural fastening section 2, an adhesive blocking section 3, an adhesive storage section 4, and a mechanical fastening section 5.

[0040] The operation section 1 is used to connect the tool to operate the anchor bolt, the structural fastening section 2 is used to assemble the structural component and the equipment base, the glue-blocking section 3 is configured to be adapted to the anchor hole, and the glue-storing section 4 has a gap between it and the anchor hole for storing the rebar glue 9.

[0041] The mechanical fastening section 5 includes a threaded structure at the tail end of the anchor bolt body. An expansion tube 6 is sleeved on the mechanical fastening section 5. The inner wall of the expansion tube 6 gradually contracts to form an inclined inner wall structure. The inner wall of the expansion tube 6 is provided with an inclined internal thread structure. The expansion tube 6 is threadedly connected to the mechanical fastening section 5. A slit 7 is provided axially at the end of the expansion tube 6 on the side of the small diameter of its inner wall.

[0042] In this embodiment, the total length of the anchor body is 160mm, which is suitable for a 14mm diameter post-anchoring drill hole. The length of the operating section 1 is 10mm. The operating section 1 is used to fit an M8 power tool socket. The operating end is an external hexagonal socket, which is matched with the power tool socket for easy and quick installation and fastening.

[0043] The aforementioned structural fastening section 2 is a 40mm external threaded rod structure, used for mounting nuts, spring washers, flat washers, and other structural components, while also securing the equipment base required for installation. Structural fastening section 2 is fixedly connected to operating section 1.

[0044] The aforementioned glue-sealing section 3 is fixedly connected to the structural fastening section 2. The glue-sealing section 3 has a length of 14.7mm, a diameter of 13.3mm, and a gap of 0.7mm between the glue-sealing section 3 and the anchor hole wall. This effectively prevents the anchoring adhesive 9 from flowing out of the anchor hole. At the same time, the diameter is increased and thickened compared to other parts of the anchor bolt body, increasing the bearing area at the anchor hole opening to improve shear resistance. In addition, during beam bottom construction, the anchoring adhesive 9 will not flow back under negative pressure conditions, thus preventing backflow.

[0045] The aforementioned glue storage section 4 is fixedly connected to the glue plugging section 3, with a length of 58.2 mm. The diameter of the glue storage section 4 is smaller than the diameter of the anchor hole. The gap between the glue plugging section 3 and the anchor hole wall can store the anchoring glue 9. When the anchor rod is inserted into the anchor hole, the anchoring glue 9 in the anchor hole overflows between the glue storage section 4 and the anchor hole wall. After the anchoring glue 9 solidifies, it forms a fastening force between the anchor rod and the anchor hole. In an optimal embodiment, in order to further improve the fastening force, the aforementioned glue storage section 4 is provided with a multi-segment structure. Each glue storage section 4 is an inverted frustum structure (the cross section along the axial direction is an inverted trapezoid), and the diameter of the upper bottom surface is 12.5 mm, and the diameter of the lower bottom surface is 11.3 mm. By providing the glue storage section 4 with an inverted frustum structure to form a stepped structure, the friction can be further improved, thereby improving the fastening force of the anchor rod. In this embodiment, the glue storage section 4 is provided with 6 segments, and the length of each glue storage section 4 is 9.7 mm.

[0046] The aforementioned mechanical fastening section 5 is fixedly connected to the glue storage section 4. The mechanical fastener is a 30mm long screw structure with a diameter of 11.7mm. The expansion tube 6, which is sleeved on the mechanical fastening section 5, is 27mm long and has an outer diameter of 13.3mm. The gap between the expansion tube 6 and the anchor hole wall is 0.7mm. The inner wall of the expansion tube 6 has internal threads, and the wall thickness at the inlet end of the expansion tube 6 is 1.2mm, while the wall thickness at the outlet end is 2mm. The inner wall forms an inclined surface (the inner diameter gradually decreases, and the inner wall gradually contracts). The cut 7 is opened from the side wall at the outlet end. The cut 7 cuts along the axial direction of the expansion tube 6, cutting through the side wall of the expansion tube 6 (not completely penetrating the side wall of the expansion tube 6 axially, but completely penetrating the side wall of the expansion tube 6 radially). The expansion tube 6 is moved along the inside of the mechanical fastening section 5. During operation, as the inner diameter of the expansion tube 6 gradually decreases, the mechanical fastening section 5 will expand the expansion tube 6 outward. Due to the setting of the cut 7, the expansion tube 6 expands outward, thereby abutting against the anchor hole wall and further improving the fastening force. In some other embodiments, the outer wall of the expansion tube 6 can also be provided with an uneven structure to increase the friction between it and the anchor hole wall and improve the fastening force. Expansion fastening and concrete stress formation achieve immediate fastening. The expansion tube 6 is designed with a large internal thread inlet (thin wall at the inlet end) and a small outlet (thick wall at the outlet end). The bolt rotation causes the expansion tube 6 to expand, and the bolt rotation also allows the two-component anchoring adhesive 9 to cure more evenly. The product design is more precise and scientifically practical. The product design has dual functions of metal fastening and chemical curing structure, which is more durable and makes the overall building structure safer.

[0047] The outer wall of the fastening section 2 of the structural component is provided with a threaded structure, and the threaded structure of the fastening section 2 of the structural component is compatible with the structural component to be assembled and the equipment base.

[0048] The glue storage unit is a frustum-shaped structure, and the vertical cross-section of the glue storage unit through the shaft is an inverted trapezoidal structure. The diameter of the upper bottom surface of the glue storage unit is 12.5mm, the radius of the lower bottom surface is 11.3mm, the larger diameter end of the uppermost glue storage unit is fixedly connected to the glue blocking section 3, and the smaller diameter end of the lowermost glue storage unit is fixedly connected to the mechanical fastening section 5.

[0049] In one specific embodiment, the inner wall of the expansion tube 6 is configured in two sections. The end into which the anchor bolt enters is configured as a straight tube structure adapted to the mechanical fastening section 5, and the end from which the anchor bolt extends is configured to gradually narrow, forming a structure with a large inlet and a small outlet. The expansion tube 6 is made of stainless steel or carbon steel.

[0050] The cut 7 on the expansion tube 6 is set in a straight line, that is, there are two cuts 7, and the two cuts 7 are spaced 180 degrees apart;

[0051] Alternatively, the cuts 7 on the expansion tube 6 may be cross-shaped, meaning there are four cuts 7, and the four cuts 7 are spaced 90 degrees apart.

[0052] The outer wall of the expansion tube 6 is provided with a textured pattern, and the maximum outer diameter of the expansion tube 6 is 13.3 mm.

[0053] A buffer section 8 is provided between the fastening section 2 and the sealing section 3 of the structural component, and the buffer section 8 and the sealing section 3 are chamfered.

[0054] The above-mentioned operating section 1, structural component fastening section 2, buffer section 8, glue blocking section 3, glue storage section 4, and mechanical fastening section 5 are integrally molded.

[0055] Specific construction methods:

[0056] 1. Use a #14 drill bit to drill a hole to a depth of 105mm;

[0057] 2. Use a reaming drill bit to ream the hole to a depth of 80mm to 105mm;

[0058] 3. Remove debris and dust from the hole;

[0059] 4. Inject the anchoring adhesive 9 into the hole, approximately 15-20 grams of adhesive.

[0060] 5. Use an electric hammer and socket tool to install the expansion tube into place according to the corresponding installation torque;

[0061] 6. Install the flat washers, spring washers, and nuts. Installation is complete.

[0062] The present invention provides an instant-fastening inverted cone-shaped rebar anchor with chemical anchors. It features rapid anchoring and is equipped with an electric tool for easier and faster construction. It can be used in underwater negative pressure conditions and under negative pressure beams. The product design combines metal fastening and chemical curing for enhanced safety and durability. It also allows for faster and safer construction, saving labor costs and solving problems such as overlapping work surfaces on construction sites with large machinery.

[0063] The above specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0064] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0065] The present invention has been described in detail above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A chemical anchor bolt for immediate mechanical fastening of inverted conical rebar, characterized in that: The anchor body includes an operating section, a structural fastening section, a glue-blocking section, a glue-storing section, and a mechanical fastening section arranged sequentially along its axial direction. The operating section is used to connect the tool to operate the anchor bolt, the structural fastening section is used to assemble the structural component and the equipment base, the glue-sealing section is configured to be adapted to the anchor hole, and the glue-storing section is provided with a gap between itself and the anchor hole for storing the rebar adhesive. The mechanical fastening section includes a threaded structure at the tail end of the anchor bolt body. An expansion tube is sleeved on the mechanical fastening section. The inner wall of the expansion tube gradually contracts to form an inclined inner wall structure. The inner wall of the expansion tube is provided with an inclined internal thread structure. The expansion tube is threadedly connected to the mechanical fastening section. The end of the expansion tube on the small diameter side of its inner wall is provided with a slit along the axial direction.

2. The immediate mechanical fastening inverted conical rebar adhesive chemical anchor bolt according to claim 1, characterized in that: The operating section is an external hexagonal socket, which is compatible with the socket structure of power tools.

3. The immediate mechanical fastening inverted cone-shaped rebar adhesive chemical anchor bolt according to claim 1, characterized in that: The outer wall of the fastening section of the structural component is provided with a threaded structure, and the threaded structure of the fastening section of the structural component is compatible with the structural component to be assembled and the equipment base.

4. The immediate mechanical fastening inverted cone-shaped rebar adhesive chemical anchor bolt according to claim 1, characterized in that: The sealing section is a structure adapted to the shape of the anchor hole to be installed, and the gap between the sealing section and the wall of the anchor hole to be installed is 0.7mm.

5. The immediate mechanical fastening inverted conical rebar adhesive chemical anchor bolt according to claim 1, characterized in that: The glue storage section includes multiple glue storage units, which are connected end to end in sequence, and a gap is provided between the glue storage unit and the wall of the anchor hole to be installed.

6. The immediate mechanical fastening inverted conical rebar adhesive chemical anchor bolt according to claim 5, characterized in that: The glue storage unit is a frustum-shaped structure, and the vertical cross-section of the glue storage unit through the shaft is an inverted trapezoidal structure. The diameter of the upper bottom surface of the glue storage unit is 12.5mm, the radius of the lower bottom surface is 11.3mm, the larger diameter end of the uppermost glue storage unit is fixedly connected to the glue-blocking section, and the smaller diameter end of the lowermost glue storage unit is fixedly connected to the mechanical fastening section.

7. The immediate mechanical fastening inverted conical rebar adhesive chemical anchor bolt according to claim 1, characterized in that: The inner wall of the expansion tube is designed in two sections. The end where the anchor bolt enters is designed as a straight tube structure that is compatible with the mechanical fastening section, while the end where the anchor bolt extends has a gradually narrowing structure that forms a large inlet and a small outlet.

8. The immediate mechanical fastening inverted conical rebar adhesive chemical anchor bolt according to claim 1, characterized in that: The cut on the expansion tube is set in a straight line, that is, there are two cuts, and the two cuts are spaced 180 degrees apart; Alternatively, the cuts on the expansion tube may be cross-shaped, meaning there are four cuts spaced 90 degrees apart.

9. The immediate mechanical fastening inverted conical rebar adhesive chemical anchor bolt according to claim 1, characterized in that: The outer wall of the expansion tube is provided with a textured pattern, and the maximum outer diameter of the expansion tube is 13.3 mm.

10. The immediate mechanical fastening inverted conical rebar adhesive chemical anchor bolt according to claim 1, characterized in that: A buffer section is provided between the fastening section and the sealing section of the structural component, and the buffer section and the sealing section are chamfered.

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