Ocean dual-phase steel bolt

Abstract

The utility model discloses an ocean dual-phase steel bolt, which relates to the technical field of bolts and comprises a nut. One rod end of the screw rod is fixed with the nut; the cover closing device is provided with a wrapping cavity; the two sets of cover closing devices are symmetrically arranged, one cover closing device is fixedly installed on the nut, and the other cover closing device is fixedly installed at the other rod end of the screw rod; the nut extends into the wrapping cavity of one closed cover device in the middle, and the other rod end of the screw extends into the wrapping cavity of the other closed cover device in the middle; the utility model has the advantages that the left end of the screw cap and the right end of the screw rod are respectively provided with a group of cover closing devices, and the screw cap and the screw rod are respectively covered by the wrapping cavities, so that more comprehensive protection is obtained, and the corrosion resistance is high; all the components are mounted in a detachable fixing manner so as to be convenient to replace; the surrounding ring is connected with the periphery of the expanding ring through threads so that the use depth of the wrapping cavity can be adjusted at will, and assistance is provided for use flexibility.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field more specifically is related to a marine dual phase steel bolt. BACKGROUND

[0002] The bolt used in the environment of marine engineering, shipbuilding and offshore platform can be made of dual phase stainless steel material, has good corrosion resistance and high strength characteristics, and can meet the use requirements under seawater and marine climate conditions.

[0003] The existing bolt, as shown in the application number: CN201420201050.1, an offshore platform corrosion-resistant bolt assembly, wherein the part for covering the installation and use end is used to improve the corrosion resistance of the bolt, and the dual phase stainless steel material is used for manufacturing, which can greatly improve the corrosion resistance, but the bolt assembly is only covered at one end, and the nut end is generally exposed when the bolt is installed and used, and the overall protection degree is insufficient. UTILITY MODEL CONTENTS

[0004] The utility model discloses a marine dual phase steel bolt.

[0005] The utility model discloses a marine dual phase steel bolt, including;

[0006] The utility model discloses a marine dual phase steel bolt, including;

[0007] Nut;

[0008] Screw rod, one rod end and nut fixed;

[0009] Also including;

[0010] The closure device has a cavity;

[0011] The closure device is provided with two groups and is symmetrically arranged, one closure device is fixed on the nut, and the other closure device is fixed on the other rod end of the screw rod;

[0012] The nut is centrally inserted into the cavity of one closure device, and the other rod end of the screw rod is centrally inserted into the cavity of the other closure device.

[0013] As a preferred technical scheme of the utility model, the closure device includes a detachable end sealing assembly on the outer side of the nut or the other rod end of the screw rod and a detachable surrounding ring outside the end sealing assembly, and the cavity is formed between the surrounding ring and the end sealing assembly.

[0014] As a preferred technical solution of this utility model, the sealing assembly includes a cover plate assembly that is detachably fixed to the inner ring, a connecting rod fixed to the outer side of the cover plate assembly, and a rod groove provided on the outer side of the nut or the other end of the screw, with the connecting rod threadedly connected in the rod groove.

[0015] As a preferred technical solution of this utility model, the cover plate assembly includes an inner plate and an expansion ring fixed around its periphery, with the periphery of the expansion ring being threadedly connected to the inner thread of the surrounding ring.

[0016] As a preferred embodiment of this utility model, the thread direction of the outer periphery of the expansion ring and the inner periphery of the retaining ring is the same as the thread direction of the connecting rod and the rod groove.

[0017] The beneficial effects of this utility model are as follows:

[0018] By installing a set of enclosure devices at the left end of the nut and the right end of the screw, the nut and screw are respectively covered by the cavity, thus achieving comprehensive protection and high corrosion resistance. Both are installed in a detachable and fixed manner for easy replacement. The retaining ring is connected to the outer periphery of the expansion ring by threads, so that the working depth of the cavity can be adjusted at will, which helps to enhance the flexibility of use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the implementation structure of this utility model.

[0021] Reference numerals: Nut-1, Screw-2, Cover device-3, End sealing assembly-31, Enclosing ring-32, Cover plate assembly-311, Connecting rod-312, Rod groove-313, Inner plate-3111, Expanding ring-3112. Detailed Implementation

[0022] like Figures 1-2 As shown, this utility model proposes: a marine duplex steel bolt, comprising;

[0023] Nut 1;

[0024] Screw 2, one end of which is fixed to nut 1; the right end of nut 1 fixes the left end of screw 2;

[0025] It also includes a closure device 3 with a cavity;

[0026] The enclosure device 3 is provided in two sets and is arranged symmetrically. One enclosure device 3 is fixed on the nut 1 and the other enclosure device 3 is fixed on the other end of the screw 2.

[0027] Nut 1 extends into the cavity of one of its enclosure devices 3, and the other end of screw 2 extends into the cavity of another enclosure device 3.

[0028] By installing a set of cover devices 3 on the left end of the nut 1 and the right end of the screw rod 2, the nut 1 and the screw rod 2 are covered by the cavity, as shown in the figure. Figure 2 The bolt penetrates the left and right ends of the to-be-assembled component (such as two mounting plates), the nut 1 is attached to the left end of the to-be-assembled component, the screw rod 2 penetrates the right end of the to-be-assembled component and is threadedly connected through the nut, and the nut is attached to the right end of the to-be-assembled component. At this time, the left and right sides are connected to the nut 1 and the screw rod 2 through the cover devices 3 and are covered by the cavity, so that more comprehensive protection is obtained, and the corrosion resistance is high.

[0029] The specific structure of the cover device 3 is as follows:

[0030] The cover device 3 comprises an end sealing assembly 31 detachably fixed to the outside of the nut 1 or the other end of the screw rod 2, and a surrounding ring 32 detachably fixed outside the end sealing assembly 31, and a cavity is formed between the surrounding ring 32 and the end sealing assembly 31. The end sealing assembly 31 and the surrounding ring 32 are connected and assembled in a detachable manner, which is convenient for replacement.

[0031] The end sealing assembly 31 comprises a cover plate assembly 311 detachably fixed inside the surrounding ring 32, a connecting rod 312 fixed to the outside of the cover plate assembly 311, and a rod groove 313 provided on the outside of the nut 1 or the other end of the screw rod 2, and the connecting rod 312 is threadedly connected in the rod groove 313. The connecting rod 312 is threadedly connected on the rod groove 313 by rotating the cover plate assembly 311, and the surrounding ring 32 is connected and fixed outside the cover plate assembly 311, so that the assembly is completed.

[0032] The cover plate assembly 311 comprises an inner plate 3111 and an expansion ring 3112 fixed to the periphery thereof, and the expansion ring 3112 is threadedly connected to the periphery of the surrounding ring 32. The expansion ring 3112 is fixed to the periphery of the inner plate 3111 to increase the contact surface when threadedly connected to the surrounding ring 32, thereby improving the stability of the connection and installation. The surrounding ring 32 is threadedly connected and can be adjusted in position left and right at will, so as to conveniently adjust the depth of use of the cavity and provide assistance for the flexibility of use.

[0033] The threads on the periphery of the expansion ring 3112 and in the surrounding ring 32 are in the same direction as the threads in the connecting rod 312 and the rod groove 313. When the connecting rod 312 is rotated clockwise in the rod groove 313 to displace to the right, the surrounding ring 32 is also rotated clockwise on the periphery of the expansion ring 3112 to displace to the right. Therefore, when adjusting the surrounding ring 32 left and right, the rotation of the connecting rod 312 is forced in the same direction, so that the connecting rod 312 is not easy to loosen.

[0034] The basic principle and main features of the present application and the advantages of the present application are shown and described above, for those skilled in the art, obviously the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0035] In addition, it should be understood that, although the present application is described in the form of embodiments, not every embodiment contains only one independent technical solution, the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, the technical solutions in each embodiment can also be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A marine dual-phase steel bolt, comprising; a nut (1); a bolt rod (2) with one rod end fixed to the nut (1); characterized in that further comprising; a closure device (3) with a cavity; the closure device (3) is provided with two sets and symmetrically arranged, one closure device (3) is fixed to the nut (1), the other closure device (3) is fixed to the other rod end of the bolt rod (2); the nut (1) is centrally inserted into the cavity of one closure device (3), and the other rod end of the bolt rod (2) is centrally inserted into the cavity of the other closure device (3).

2. The dual-phase steel bolt for marine use according to claim 1, wherein The closure device (3) comprises an end sealing assembly (31) detachably fixed to the outside of the nut (1) or the other rod end of the bolt rod (2), and a surrounding ring (32) detachably fixed outside the end sealing assembly (31), and the cavity is formed between the surrounding ring (32) and the end sealing assembly (31).

3. The dual-phase steel bolt for marine use according to claim 2, wherein The end sealing assembly (31) comprises a cover plate assembly (311) detachably fixed inside the surrounding ring (32), a connecting rod (312) fixed to the outside of the cover plate assembly (311), and a rod groove (313) provided on the outside of the nut (1) or the other rod end of the bolt rod (2), and the connecting rod (312) is threadedly connected in the rod groove (313).

4. The dual-phase steel bolt for marine use according to claim 3, wherein The cover plate assembly (311) comprises an inner plate (3111) and an expansion ring (3112) fixed to the periphery thereof, and the expansion ring (3112) is threadedly connected to the periphery of the surrounding ring (32).

5. The dual-phase steel bolt for marine use according to claim 4, wherein The thread direction of the expansion ring (3112) periphery and the surrounding ring (32) inside is the same as that of the connecting rod (312) and the rod groove (313).

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