Refractory metal anchoring part

Abstract

The utility model relates to the technical field of metal anchoring structures, in particular to a refractory metal anchoring part which comprises an anchoring part and expansion caps, each head of the anchoring part is provided with the expansion cap, an anti-falling mechanism is arranged in each expansion cap, each anti-falling mechanism comprises at least two anti-falling parts, and the anti-falling parts are evenly distributed in the expansion caps in the circumferential direction. An anchoring part fastening area is formed in the area, located between the anti-disengaging parts, in the expansion cap, a plurality of anti-disengaging teeth are arranged on the end face, facing the anchoring part fastening area, of each anti-disengaging part, the head of the anchoring part stretches into the expansion cap and then is located in the anchoring part fastening area, and the anti-disengaging parts are matched to tightly hold the anchoring part so that the anchoring part can be prevented from being disengaged from the expansion cap. The expansion cap and the anti-falling mechanism are melted under the heating condition, and a proper expansion gap is reserved for the head of the anchoring part.

Description

Technical Field

[0001] The utility model relates to the technical field of metal anchoring structures, in particular to a refractory metal anchoring piece. Background Art

[0002] When refractory metal anchors are used at high temperatures, the thermal expansion of the metal causes significant expansion stress on the surrounding refractory material, which can lead to cracks, fall-off, and other damage to the refractory structure. Therefore, when using metal anchors, the hazards of metal expansion must be considered, and space for expansion must be reserved.

[0003] Common methods for preserving expansion space for anchors include applying asphalt paint and wrapping with strapping tape. The asphalt paint method struggles to ensure uniform asphalt coating thickness, and can even result in missing coatings. This makes it difficult to ensure uniform expansion space. Furthermore, asphalt paint requires heating and melting during use, during which toxic and harmful components evaporate, potentially harming the human body. The residue is classified as toxic and hazardous waste, making it difficult to dispose of and failing to meet environmental standards. Wrapping with strapping tape requires workers to wrap and strap each anchor individually, which is extremely labor-intensive. Furthermore, due to the presence of metal burrs and sharp edges on the anchors, the anchors are spaced relatively close together, making it easy for workers to get cut and even cause work-related accidents. Due to varying operating habits, the tape wrapping thickness can be uneven, and the expansion space reserved for the anchors can also be uneven.

[0004] Analysis of the anchor's operating environment reveals that the anchor's head is closest to the heat source and experiences the highest operating temperature, while the root, largely located within the insulation layer, experiences lower temperatures. Therefore, the anchor's head is the most critical area for thermal expansion protection. Using protective covers made of materials such as plastic that can melt in high-temperature environments is undoubtedly a viable approach. By selecting protective covers of varying specifications and thicknesses based on operating temperatures and metal expansion, the amount of expansion space can be adjusted to meet actual needs. However, to ensure the desired effect, the protective cover must be prevented from detaching from the anchor. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a metal anchor with an expansion cap, which melts at high temperature and reserves a suitable expansion space for the anchor, and the expansion cap cooperates with the anchor through an anti-slip mechanism to avoid accidental detachment from the anchor.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a refractory metal anchor, comprising an anchor and an expansion cap, each head of the anchor is provided with an expansion cap, the expansion cap is a hollow cylinder with one end open, an anti-slip mechanism is provided inside the expansion cap, the anti-slip mechanism comprises at least two anti-slip parts, each anti-slip part is evenly distributed along the circumference inside the expansion cap, one end of the anti-slip part is connected to the barrel mouth of the expansion cap through a connector, and the other end extends into the expansion cap, the area inside the expansion cap located between the anti-slip parts forms an anchor fastening area, and each anti-slip part is provided with a plurality of anti-slip teeth on the end face facing the anchor fastening area; the expansion cap and the anti-slip mechanism melt under heat conditions. The expansion cap is put on the head of the anchor and cooperates with the anti-slip mechanism and the head of the anchor to prevent the expansion cap from falling off. When the anchor is in use, the anti-slip mechanism melts under heat and leaves an expansion gap for the anchor.

[0007] As an optional solution, each anti-slip member has an inclined fastening surface on its end facing the anchor fastening area. This inclined fastening surface is inclined toward the barrel of the expansion cap, and a pre-extrusion gap is reserved between each anti-slip member and the inner wall of the expansion cap. The anti-slip member is provided with an inclined fastening surface. The inclined fastening surface of each anti-slip member and the anti-slip teeth on the inclined fastening surface cooperate with the anchor to prevent the expansion cap from falling off the anchor.

[0008] As an optional solution, each anti-slipping tooth is inclined toward the interior of the expansion cap. The anti-slipping teeth are arranged obliquely and prevent the expansion cap from being separated from the anchoring piece.

[0009] As an optional solution, the end of each anti-slip tooth is provided with an anti-slip end surface, and the anti-slip end surface is provided with anti-slip grooves.

[0010] As an optional solution, a limit pressure plate is provided on the end surface of the anti-slip member facing away from the anchor fastening area. The expansion cap is provided with clearance holes at each anti-slip member, and the limit pressure plate is inserted into the clearance holes. The clearance holes restrict the limit pressure plate, thereby limiting the swing direction of each anti-slip member, ensuring that the anti-slip mechanism can stably prevent the expansion cap from separating from the anchor.

[0011] As an optional solution, an external pressure cylinder is provided on the exterior of the expansion cap, which is threadedly engaged with the expansion cap. The end edge of the limiting pressure plate away from the anti-slip member is beveled and engages with the external pressure cylinder. The external pressure cylinder squeezes the anti-slip member through the limiting pressure plate, improving the coordination between the anti-slip member and the anchor.

[0012] As an optional solution, there are four anti-slip pieces. The four anti-slip pieces make the expansion cap applicable to anchor pieces with round rod heads and anchor pieces with square rod heads.

[0013] Compared with the prior art, the utility model has the following beneficial effects: 1. The expansion cap is sleeved on the head of the anchor. When the anchor is in use, the head of the anchor and the expansion cap are close to the heat source. The expansion cap and the internal anti-slip mechanism melt and leave enough expansion gap for the head of the anchor to accommodate the expansion of the metal anchor; 2. The expansion cap is cylindrical with one end open, which is convenient for installation on the head of the anchor. Each expansion cap is provided with an anti-slip mechanism. The anti-slip parts of the anti-slip mechanism cooperate with the head of the anchor and hold the anchor tightly to prevent the expansion cap from separating from the anchor; 3. The anti-slip part is provided with anti-slip teeth, and the anti-slip teeth are provided with anti-slip end faces. The external pressure cylinder is on the outside of the expansion cap and squeezes the anti-slip part inward through the limiting pressure plate, further ensuring that the expansion cap can be installed on the anchor and preventing the two from separating. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is the structural diagram of the refractory metal anchor;

[0016] Figure 2 Schematic diagram of the internal structure of the expansion cap;

[0017] Figure 3 Schematic diagram of the cooperation between the expansion cap and the anchor;

[0018] In the figure: 1. Anchor, 2. Expansion cap, 3. Anti-slip part, 4. Connector, 5. Anti-slip tooth, 6. Limiting pressure plate, 7. External pressure cylinder. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] A refractory metal anchor, see Figure 1-Figure 3, including an anchor 1 and an expansion cap 2. Based on the analysis of the use environment of the anchor 1, an expansion cap 2 is set at each head of the anchor 1. The expansion cap 2 is a hollow cylinder with an open end. An anti-slip mechanism is set in the expansion cap 2. The expansion cap 2 is sleeved on the head of the anchor 1 and the anti-slip mechanism cooperates with the anchor 1 to prevent the expansion cap 2 from falling off from the anchor 1. The expansion cap 2 and the anti-slip mechanism are both made of plastic and melt under heating conditions. Since the refractory metal anchor 1 is used at high temperature, in the use environment of the anchor 1, the anti-slip mechanism melts and leaves sufficient expansion gap for the anchor 1.

[0021] The anti-slip mechanism includes at least two anti-slip parts 3, each anti-slip part 3 is inside the expansion cap 2 and is evenly distributed along the circumference. One end of the anti-slip part 3 is connected to the barrel mouth of the expansion cap 2 through a connecting part 4, and the other end of the anti-slip part 3 is a free end and extends into the expansion cap 2. There is a certain moving gap between the free end of the anti-slip part 3 and the inner wall of the expansion cap 2. The area between the anti-slip parts 3 in the expansion cap 2 forms a fastening area of ​​the anchor 1. A number of anti-slip teeth 5 are provided on the end face of each anti-slip part 3 facing the fastening area of ​​the anchor 1. After the head of the anchor 1 extends into the expansion cap 2, it is located in the fastening area of ​​the anchor 1 and contacts and cooperates with the anti-slip teeth 5 of each anti-slip part 3. The anti-slip teeth 5 of each anti-slip part 3 cooperate to grasp the head of the anchor 1, thereby effectively preventing the expansion cap 2 from separating from the anchor 1.

[0022] The end face of each anti-slip part 3 facing the fastening area of ​​the anchor 1 is a fastening slope, and the fastening slope is inclined in the direction of the barrel mouth of the expansion cap 2. The fastening area of ​​the anchor 1 is a conical area with a diameter gradually decreasing from the barrel mouth of the expansion cap 2 to the inner diameter of the expansion cap 2. An extrusion gap is reserved between each anti-slip part 3 and the inner wall of the expansion cap 2, and the extrusion gap includes a movement gap. Since the anti-slip part 3 and the connecting part 4 are made of plastic and have certain deformation and recovery capabilities, when the head of the anchor 1 extends into the fastening area of ​​the anchor 1, the anti-slip part 3 will be squeezed and the free end of the anti-slip part 3 will be pushed outward. The free end of each anti-slip part 3 gradually approaches the inner wall of the expansion cap 2 and each extrusion gap gradually becomes smaller. Under the action of the recovery ability of the anti-slip part 3 and the connecting part 4, each anti-slip part 3 cooperates to tightly lock the head of the anchor 1, thereby further preventing the expansion cap 2 from detaching from the anchor 1.

[0023] Furthermore, each anti-slip tooth 5 is inclined toward the interior of the expansion cap 2, and the anti-slip teeth 5 are set as oblique teeth inclined toward the interior of the expansion cap 2. In the process of the head of the anchor 1 extending into the expansion cap 2, the head of the anchor 1 follows the inclined direction of the anti-slip teeth 5, and when the expansion cap 2 is separated from the anchor 1, the head of the anchor 1 is opposite to the inclined direction of the anti-slip teeth 5. Each anti-slip tooth 5 plays a preventing role to prevent the expansion cap 2 from being separated from the anchor 1.

[0024] Furthermore, the end of each anti-slip tooth 5 is provided with an anti-slip end surface, and the anti-slip end surface is provided with anti-slip grooves. After the expansion cap 2 is installed on the head of the anchor 1, the anti-slip end surface is attached to the outer end surface of the anchor 1, thereby increasing the friction between the expansion cap 2 and the anchor 1, thereby further preventing the expansion cap 2 from detaching from the anchor 1.

[0025] As an optional embodiment, a limiting pressure plate 6 is provided on the end face of the anti-slip part 3 facing away from the fastening area of ​​the anchor 1. The limiting pressure plate 6 is at the extrusion gap. The expansion cap 2 is provided with a clearance hole corresponding to each anti-slip part 3. The limiting pressure plate 6 passes through the clearance hole. In the process of the head of the anchor 1 extending into the fastening area of ​​the anchor 1, the limiting pressure plate 6 moves along the clearance hole toward the outside of the expansion cap 2. The clearance hole limits the moving direction of the limiting pressure plate 6, thereby preventing the anti-slip part 3 from shifting in the circumferential direction.

[0026] Furthermore, the outer wall of the expansion cap 2 is provided with an external thread, the outer sleeve of the expansion cap 2 is provided with an external pressure cylinder 7, the inner wall of the external pressure cylinder 7 is provided with an internal thread, the external pressure cylinder 7 is threadedly matched with the expansion cap 2, the external pressure cylinder 7 rotates and moves along the axial direction of the expansion cap 2, the end edge of the limiting pressure plate 6 away from the anti-slip part 3 is a bevel, the external pressure cylinder 7 rotates and moves along the axial direction of the expansion cap 2 and cooperates with the bevel of the limiting pressure plate 6, the external pressure cylinder 7 contacts and cooperates with the bevel of the limiting pressure plate 6 and can squeeze the limiting pressure plate 6 into the expansion cap 2 along the axial direction, thereby improving the contact effect between the corresponding anti-slip part 3 and the anchor 1, and further preventing the expansion cap 2 from separating from the anchor 1.

[0027] As a preferred embodiment, there are four anti-slip parts 3, which are all inside the expansion cap 2 and are evenly distributed circumferentially around the central axis of the expansion cap 2. The number of anti-slip parts 3 is four, which is not only suitable for use with an anchor 1 with a round rod head, but also suitable for use with an anchor 1 with a square rod head.

[0028] It should be noted that anchors 1 of different materials and sizes should be equipped with expansion caps 2 of corresponding specifications, so as to provide a suitable expansion gap for the anchor 1 after the expansion caps 2 melt.

[0029] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A refractory metal anchor, characterized in that: The invention comprises an anchor (1) and an expansion cap (2). Each head of the anchor (1) is provided with an expansion cap (2). The expansion cap (2) is a hollow cylinder with one end open. An anti-slip mechanism is provided inside the expansion cap (2). The anti-slip mechanism comprises at least two anti-slip parts (3). Each anti-slip part (3) is evenly distributed along the circumference inside the expansion cap (2). One end of the anti-slip part (3) is connected to the cylinder mouth of the expansion cap (2) through a connecting part (4), and the other end extends into the expansion cap (2). The area inside the expansion cap (2) located between the anti-slip parts (3) forms a fastening area of ​​the anchor (1). Each anti-slip part (3) is provided with a plurality of anti-slip teeth (5) on its end surface facing the fastening area of ​​the anchor (1). The expansion cap (2) and the anti-slip mechanism melt under heating conditions.

2. A refractory metal anchor according to claim 1, characterized in that: The end surface of each anti-slipping member (3) facing the fastening area of ​​the anchor member (1) is a fastening inclined surface, the fastening inclined surface is inclined toward the barrel mouth of the expansion cap (2), and an extrusion gap is reserved between each anti-slipping member (3) and the inner wall of the expansion cap (2).

3. A refractory metal anchor according to claim 2, characterized in that: Each anti-dropping tooth (5) is inclined toward the interior of the expansion cap (2).

4. A refractory metal anchor according to claim 3, characterized in that: The end of each anti-slip tooth (5) is provided with an anti-slip end surface, and the anti-slip end surface is provided with anti-slip grooves.

5. A refractory metal anchor according to claim 4, characterized in that: A limiting pressure plate (6) is arranged on the end surface of the anti-slipping member (3) facing away from the fastening area of ​​the anchor member (1), and a clearance hole is arranged at each position of the expansion cap (2) corresponding to each anti-slipping member (3), and the limiting pressure plate (6) is inserted into the clearance hole.

6. A refractory metal anchor according to claim 5, characterized in that: An external pressure cylinder (7) is sleeved on the outside of the expansion cap (2), and the external pressure cylinder (7) is threadedly matched with the expansion cap (2). The end edge of the limit pressure plate (6) away from the anti-slip component (3) is a beveled edge and is in contact with the external pressure cylinder (7).

7. A refractory metal anchor according to any one of claims 2 to 6, characterized in that: There are four anti-dropping parts (3).

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