High-strength sealing type double-end stud

Abstract

The utility model relates to the technical field of special fasteners, in particular to a high-strength sealing type double-end stud which comprises a polished rod, smooth-surface columns are fixedly connected to the two ends of the polished rod, stud sections are fixedly connected to the outer ends of the smooth-surface columns respectively, notch cavities distributed in the circumferential direction are formed in the end faces, facing the polished rod, of the smooth-surface columns along the edge by a circle, and the notch cavities are communicated with the smooth-surface columns. A sliding plate is slidably connected in the notch cavity, the top of the sliding plate is connected with a mounting plate through a connecting plate, the mounting plate is connected with a sealing plate, and the outer surface of the sealing plate is provided with a cambered surface for embedding a sealing ring; according to the double-end stud structure, the sealing ring is embedded in the connecting position of the sealing type double-end stud and the two parts, oil dirt inside the parts is prevented from flowing out of equipment to pollute the equipment, and the sealing performance of the sealing type double-end stud structure is greatly improved, so that the service life of the sealing type double-end stud structure is prolonged, and the service life of the sealing type double-end stud structure is prolonged. The double-end stud has good sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of special fasteners, in particular to a high-strength sealed double-headed stud. Background Art

[0002] Stud bolts are widely used in chemical equipment, pressure vessels, marine engineering, pipeline flanges, mechanical equipment, rail transportation, and other fields. Among the components required for equipment assembly, stud bolts play a crucial connecting role. When used, one end is screwed into the main body of the part, and the other end is connected to the corresponding nut, serving the purpose of fastening the two components.

[0003] When using studs to fasten two components, the lubricating oil in the components often leaks out due to poor sealing, causing oil pollution to the outside of the equipment, resulting in poor sealing. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a high-strength sealed double-headed stud.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A high-strength sealed double-ended stud comprises a polished rod, both ends of which are fixedly connected to polished columns, the outer ends of which are respectively fixedly connected to stud segments, the polished column is provided with circumferentially distributed notched cavities along the edge of the end face facing the polished rod, a slide is slidably connected in the notched cavities, the top of the slide is connected to a mounting plate via a connecting plate, a sealing plate is connected to the mounting plate, an arc surface for assembling a sealing ring is provided on the outer surface of the sealing plate, the stud segment is screwed in and pushes the sealing plate toward the polished rod to abut against and press on the sealing ring to achieve sealing.

[0007] In a preferred technical solution, the cavity is designed as an oblique channel, and sliding grooves are respectively provided on the groove walls on both sides of the cavity, and the oblique direction of the sliding grooves is consistent with that of the cavity.

[0008] In a preferred technical solution, the bottom surface of the slide is designed to be in the same shape as the bottom wall of the cavity, and both side edges of the slide are respectively provided with raised edges, which are built into corresponding slide grooves and slide along them.

[0009] In a preferred technical solution, the distance between the sealing plate and the axis of the polished column is greater than or equal to the radius of the polished rod.

[0010] In a preferred technical solution, the bottom surface of the mounting plate is provided with a cut corner, and the cut surface of the cut corner is adapted to the bottom wall surface of the cavity.

[0011] The beneficial effects of the utility model are:

[0012] The stud bolt structure proposed in this solution solves the problem of low sealing performance of the stud bolt connection, which leads to leakage of lubricating oil. The stud bolt structure is proposed in which a sealing ring is embedded in the joint between the sealed stud bolt and the two components, thereby preventing the oil inside the component from flowing to the outside of the equipment and causing pollution to the equipment. The stud bolt has good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the double-ended stud proposed in the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the connection between the polished rod and the polished column proposed in the utility model;

[0015] Figure 3 This is a structural schematic diagram of the slide plate and the sealing plate on the slide plate proposed by the utility model.

[0016] In the figure: 1, polished rod; 2, polished column; 21, missing cavity; 22, slide groove; 3, stud section; 4, sealing ring; 5, slide plate; 51, raised edge; 6, connecting plate; 7, mounting plate; 8, sealing plate; 81, curved surface. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] In this embodiment, refer to Figure 1-3 A high-strength sealed double-ended stud includes a polished rod 1, both ends of the polished rod 1 are fixedly connected to a polished column 2, and the outer ends of the polished column 2 are respectively fixedly connected to a stud segment 3. The polished rod 1, the polished column 2 and the stud segment 3 are integrally molded to improve the connection strength.

[0019] The polished column 2 has a circumferentially distributed notch cavity 21 along the edge of the end face facing the polished rod 1. The notch cavity 21 is designed as an oblique groove. The groove walls on both sides of the notch cavity 21 respectively have sliding grooves 22, and the sliding grooves 22 are consistent with the oblique direction of the notch cavity 21.

[0020] A slide plate 5 is slidably connected in the cavity 21. Figure 3 As shown, the bottom surface of the slide plate 5 is designed to be consistent with the bottom wall of the cavity 21, and the two side edges of the slide plate 5 are respectively provided with raised edges 51, which are built into the corresponding sliding grooves 22 and slide along them.

[0021] The top of the slide plate 5 is connected to the mounting plate 7 via the connecting plate 6 . The bottom surface of the mounting plate 7 is provided with a cut corner, and the cut surface of the cut corner is adapted to the bottom wall surface of the notch cavity 21 .

[0022] Mounting plate 7 is connected to sealing plate 8, which is positioned at a distance from the axis of polished column 2 that is greater than or equal to the radius of polished rod 1. The outer surface of sealing plate 8 defines a curved surface 81 for receiving sealing ring 4. This design allows the outer portion of sealing plate 8 to protrude slightly outward, making it easier for external devices to contact sealing ring 4.

[0023] During installation, the stud segments 3 on both sides are connected to the screw holes of the components. The stud segments 3 are screwed in, allowing the external device to push the sealing plate 8 toward the polished rod 1. The slide 5 slides along the bottom wall of the notch 21, and the sealing plate 8 gradually rests on both ends of the polished rod 1. The surface of the external component can press against the sealing ring 4 to achieve a seal, ultimately achieving a sealed connection between the components.

[0024] 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 high-strength sealed stud, characterized in that: The utility model comprises a polished rod (1), both ends of the polished rod (1) are fixedly connected to a polished column (2), the outer ends of the polished column (2) are respectively fixedly connected to stud sections (3), the polished column (2) is provided with a circumferentially distributed notch cavity (21) along the edge of the end face facing the polished rod (1), a slide plate (5) is slidably connected in the notch cavity (21), the top of the slide plate (5) is connected to a mounting plate (7) through a connecting plate (6), a sealing plate (8) is connected to the mounting plate (7), the outer surface of the sealing plate (8) is provided with an arc surface (81) for assembling a sealing ring (4), the stud section is screwed in and pushes the sealing plate (8) toward the polished rod (1) to abut against and press on the sealing ring (4) to achieve sealing.

2. A high-strength sealed stud according to claim 1, characterized in that: The notch cavity (21) is designed as an oblique channel, and the groove walls on both sides of the notch cavity (21) are respectively provided with a chute (22), and the chute (22) is consistent in oblique direction with the notch cavity (21).

3. A high-strength sealed stud according to claim 2, characterized in that: The bottom surface of the slide plate (5) is designed to be in the same shape as the bottom wall of the cavity (21), and the two side edges of the slide plate (5) are respectively provided with raised edges (51), and the raised edges (51) are built into the corresponding slide groove (22) and slide along it.

4. A high-strength sealed stud according to claim 1, characterized in that: The bottom surface of the mounting plate (7) is provided with a cut corner, and the cut surface of the cut corner is adapted to the bottom wall surface of the notch cavity (21).

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