High-strength corrosion-resistant flange bolt

Abstract

The utility model discloses a high-strength corrosion-resistant flange bolt, and relates to the technical field of flange bolts. The bolt comprises a bolt body, an upper installation point, a lower installation point, two adhesive bags and two inner reinforcing rods, the bolt body is composed of a screw rod section, a screw head end and a nut, installation openings are formed in the upper installation point and the lower installation point, and the screw rod section penetrates through the installation openings. Through the design of the inner hole body, the reinforcing rod and the adhesive bag, the adhesive bag is punctured by the inner reinforcing rod to form filling liquid, and the filling liquid can be arranged at the connecting position of the screw rod section and the mounting opening, the connecting position between the nut and the screw head end and the mounting point and the gap between the inner reinforcing rod and the inner hole body, so that the sealing and anti-corrosion effects are achieved; the problem that connecting points are prone to corrosion due to the fact that no anti-corrosion measure exists on the inner wall of the installation opening is solved, and the anti-corrosion capacity of the bolt connecting positions is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flange bolts, in particular to a high-strength and corrosion-resistant flange bolt. Background Art

[0002] The bolt mainly consists of a screw segment, a screw head end integrally arranged at the end of the screw segment and a nut with threads arranged on the screw segment. When connected and installed, the screw segment passes through the mounting openings of the upper mounting point and the lower mounting point, and the screw head end and the nut are tightened on the outer surfaces of the upper mounting point and the lower mounting point through threads.

[0003] After the bolt is installed, the bolt needs to resist the force generated between the upper installation point and the lower installation point, which will cause pressure on the bolt. The weak point is at the connection between the nut and the screw head end and the upper installation point and the lower installation point. The bolts produced in one piece have nothing special in the two positions. If the strength is insufficient, deformation and other conditions will occur, affecting the connection strength.

[0004] Moreover, the existing bolt structure and the surface of the mounting point can be treated to improve their corrosion resistance. However, it is not easy to arrange anti-corrosion measures in the mounting port on the mounting point, and the anti-corrosion coating may be damaged due to collision with the bolt. In addition, the connection between the bolt and the mounting port is in an unsealed state, and water ingress and other problems will accelerate corrosion, thereby causing the connection between the bolt and the mounting port to be easily corroded, thereby affecting the connection strength.

[0005] Therefore, designing high-strength and corrosion-resistant bolts is a problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] The utility model aims to provide a high-strength and corrosion-resistant flange bolt. Through the design of the inner hole body, the reinforcing rod and the adhesive bag, the adhesive bag is punctured by the inner reinforcing rod to form a filling liquid, which can be arranged at the connection between the screw section and the installation port, the connection between the nut and the screw head end and the installation point, and the gap between the inner reinforcing rod and the inner hole body. The filling liquid plays a sealing and anti-corrosion role, avoids the problem that the connection point is prone to corrosion due to the lack of anti-corrosion measures on the inner wall of the installation port, and improves the corrosion resistance of the bolt connection.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a high-strength, corrosion-resistant flange bolt, comprising a bolt body, an upper mounting point, a lower mounting point, two adhesive bags and two inner reinforcing rods, wherein the bolt body is composed of a screw section, a screw head end and a nut, and mounting openings are provided on the upper mounting point and the lower mounting point, and the screw section runs through the mounting openings;

[0009] The end surface of the screw head end and the end of the screw segment away from the screw head end are both provided with an inner hole extending between the screw head end and the nut, and the peripheral side surface of the screw segment is provided with two through openings connected with the inner hole;

[0010] The adhesive bag and the inner reinforcing rod are arranged in sequence in the inner hole;

[0011] The inner reinforcing rod is composed of an inner rod body, a connecting body and an outer rod body connected in one piece, the outer diameter of the inner rod body is smaller than that of the outer rod body, an inner gap is formed between the inner rod body and the inner hole body, an outer gap is formed between the thread of the screw segment and the mounting opening, the inner gap and the outer gap are connected through a through opening, and a connecting gap connected to the outer gap is formed between the screw head end and the nut and the upper mounting point and the lower mounting point;

[0012] The gel capsule is ruptured by the extrusion of the inner reinforcing rod to form a filling liquid, and the filling liquid is filled in the inner gap, the through hole, the outer gap and the connecting gap.

[0013] Furthermore, the end of the screw head end close to the nut and the end of the nut close to the screw head end are both integrally connected with end pieces, and the connecting gap is formed by the gaps between the end pieces on the nut and the screw head end and the upper mounting point and the lower mounting point respectively.

[0014] Furthermore, the end piece is provided with wedge teeth, and the wedge teeth on the screw head end and the nut are respectively embedded in the upper mounting point and the outer surface of the upper mounting point.

[0015] Furthermore, the connecting body is a conical structure, and the outer rod body and the inner hole body are interference fit.

[0016] Furthermore, a spike head is provided at one end of the inner rod body away from the outer rod body, and the spike head is integrally connected to the inner reinforcing rod.

[0017] Furthermore, the distance between the upper opening of the screw segment and the inner end surface of the inner hole body is smaller than the distance between the spike head and the connector.

[0018] The utility model has the following beneficial effects:

[0019] 1. The utility model adopts the design of the inner hole body, the reinforcing rod and the adhesive bag. After the adhesive bag is punctured by the inner reinforcing rod, the filling liquid can be arranged at the connection between the screw section and the installation port, the connection between the nut and the screw head end and the installation point, and the gap between the inner reinforcing rod and the inner hole body, thereby playing a sealing and anti-corrosion role, avoiding the problem of easy corrosion of the connection point caused by the lack of anti-corrosion measures on the inner wall of the installation port, and improving the corrosion resistance of the bolt connection.

[0020] 2. The utility model provides inner holes at both ends of the bolt body and installs inner reinforcing rods. The inner reinforcing rods are located at the connection between the bolt and the installation point. The inner reinforcing rods with higher strength are provided to strengthen the positions of the two connection points of the bolt, thereby greatly improving the strength of the bolt.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic diagram of the structure of a high-strength, corrosion-resistant flange bolt of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the adhesive capsule of the utility model before being punctured;

[0025] Figure 3 This is a schematic diagram of the structure of the adhesive capsule of the utility model before being punctured and after half of it is planed off;

[0026] Figure 4 It is a structural cross-sectional view of the connection of the screw head end of the utility model;

[0027] Figure 5 This is a structural cross-sectional view of the nut connection of the utility model;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1-upper mounting point, 2-lower mounting point, 3-screw segment, 4-screw head end, 5-nut, 6-mounting port, 7-glue bag, 8-inner reinforcing rod, 9-inner gap, 10-outer gap, 11-connecting gap, 301-inner hole body, 302-through port, 801-inner rod body, 802-connecting body, 803-outer rod body, 804-spike head. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-5 As shown, the utility model is a high-strength, corrosion-resistant flange bolt, comprising a bolt body, an upper mounting point 1, a lower mounting point 2, two adhesive bags 7 and two inner reinforcing rods 8. The bolt body is composed of a screw segment 3, a screw head end 4 and a nut 5. The upper mounting point 1 and the lower mounting point 2 are both provided with mounting openings 6, and the screw segment 3 runs through the mounting openings 6.

[0032] The end surface of the screw head end 4 and the end of the screw segment 3 away from the screw head end 4 are both provided with an inner hole 301 extending between the screw head end 4 and the nut 5, and the side surface of the screw segment 3 is provided with two through holes 302 communicating with the inner hole 301;

[0033] The adhesive bag 7 and the inner reinforcing rod 8 are sequentially arranged in the inner hole body 301;

[0034] The inner reinforcing rod 8 is composed of an inner rod body 801, a connecting body 802 and an outer rod body 803 connected in one piece. The outer diameter of the inner rod body 801 is smaller than that of the outer rod body 803. An inner gap 9 is formed between the inner rod body 801 and the inner hole body 301. An outer gap 10 is formed between the thread of the screw segment 3 and the mounting opening 6. The inner gap 9 and the outer gap 10 are connected through the through opening 302. A connecting gap 11 connected to the outer gap 10 is formed between the screw head end 4 and the nut 5 and the upper mounting point 1 and the lower mounting point 2.

[0035] The plastic capsule 7 is ruptured by the extrusion of the inner reinforcing rod 8 to form a filling liquid, and the filling liquid is filled in the inner gap 9, the through opening 302, the outer gap 10 and the connecting gap 11.

[0036] Among them Figure 1-5 As shown, the end of the screw head end 4 close to the nut 5 and the end of the nut 5 close to the screw head end 4 are both integrally connected with an end piece 12, and the connecting gap 11 is formed by the gaps between the end pieces 12 on the nut 5 and the screw head end 4 and the upper mounting point 1 and the lower mounting point 2 respectively.

[0037] The end piece 12 is provided with wedge teeth, and the wedge teeth on the screw head end 4 and the nut 5 are respectively embedded in the upper mounting point 1 and the outer surface of the upper mounting point 1.

[0038] Among them Figure 3-5 As shown, the connecting body 802 is a conical structure, and the outer rod body 803 and the inner hole body 301 are interference fit.

[0039] Among them Figure 3-5 As shown, a spike head 804 is provided at one end of the inner rod body 801 away from the outer rod body 803 , and the spike head 804 is integrally connected to the inner reinforcing rod 8 .

[0040] The distance between the upper opening 302 of the screw segment 3 and the inner end surface of the inner hole body 301 is smaller than the distance between the spike head 804 and the connecting body 802 .

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-strength, corrosion-resistant flange bolt, comprising a bolt body, an upper mounting point (1) and a lower mounting point (2), wherein the bolt body is composed of a screw segment (3), a screw head end (4) and a nut (5), wherein both the upper mounting point (1) and the lower mounting point (2) are provided with a mounting opening (6), wherein the screw segment (3) passes through the mounting opening (6), and wherein: It also includes two gel capsules (7) and two inner reinforcing rods (8); The end surface of the screw head end (4) and the end of the screw segment (3) away from the screw head end (4) are both provided with an inner hole (301) extending between the screw head end (4) and the nut (5), and the side surface of the screw segment (3) is provided with two through openings (302) in communication with the inner hole (301); The plastic bag (7) and the inner reinforcing rod (8) are sequentially arranged in the inner hole body (301); The inner reinforcing rod (8) is composed of an inner rod body (801), a connecting body (802) and an outer rod body (803) which are integrally connected; the outer diameter of the inner rod body (801) is smaller than that of the outer rod body (803); an inner gap (9) is formed between the inner rod body (801) and the inner hole body (301); an outer gap (10) is formed between the thread of the screw segment (3) and the mounting opening (6); the inner gap (9) and the outer gap (10) are connected via a through opening (302); and a connecting gap (11) connected to the outer gap (10) is formed between the screw head end (4) and the nut (5) and the upper mounting point (1) and the lower mounting point (2); The gel capsule (7) is ruptured by the extrusion of the inner reinforcing rod (8) to form a filling liquid, and the filling liquid is filled in the inner gap (9), the through hole (302), the outer gap (10) and the connecting gap (11).

2. A high-strength, corrosion-resistant flange bolt according to claim 1, characterized in that: An end piece (12) is integrally connected to one end of the screw head end (4) close to the nut (5) and one end of the nut (5) close to the screw head end (4); the connection gap (11) is formed by the gaps between the end pieces (12) on the nut (5) and the screw head end (4) and the upper mounting point (1) and the lower mounting point (2), respectively.

3. A high-strength, corrosion-resistant flange bolt according to claim 2, characterized in that: The end piece (12) is provided with wedge teeth, and the wedge teeth on the screw head end (4) and the nut (5) are respectively embedded in the upper mounting point (1) and the outer surface of the upper mounting point (1).

4. The high-strength, corrosion-resistant flange bolt according to claim 1, characterized in that: The connecting body (802) is a conical structure, and the outer rod body (803) is interference fit with the inner hole body (301).

5. The high-strength, corrosion-resistant flange bolt according to claim 1, characterized in that: A spike head (804) is provided at one end of the inner rod body (801) away from the outer rod body (803), and the spike head (804) is integrally connected to the inner reinforcing rod (8).

6. A high-strength, corrosion-resistant flange bolt according to claim 5, characterized in that: The distance between the upper opening (302) of the screw segment (3) and the inner end surface of the inner hole body (301) is smaller than the distance between the spike head (804) and the connecting body (802).

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