Device for observing hydraulic nut of rudder system of ship underwater

Abstract

The utility model aims to provide a device for observing a hydraulic nut of a ship rudder system underwater. Comprising a welding seat, one end of the welding seat is provided with a sealing cover, the other end of the welding seat is provided with an observation lens, the cross section of the internal space of the welding seat is T-shaped, and the cross section of the sealing cover is T-shaped. The device is suitable for various ship types, each part is compact, small and exquisite, the performance is stable, the operation is convenient and fast, the whole device is convenient to install, the structure is stable, the operation is convenient, ship construction and ship operation management are facilitated, and compared with a traditional hinge type observation cover, the device has the advantages of being small and exquisite in structure, small in influence on rudder blade structure opening, stable, reliable, high in corrosion resistance and long in service life. The operation is simple and convenient, and construction and operation management are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of underwater observation devices, in particular to a device used for underwater observation of hydraulic nuts of a ship's rudder system. Background Art

[0002] The tonnage of today's ships is increasing day by day, and the specifications of various spare parts are also increasing accordingly, so the requirements for tooling used to install spare parts are also getting higher and higher. The rudder system is the steering mechanism of the ship. Since the rudder system works in poor conditions and bears large torque, most of the nuts used for the rudder system are hydraulic nuts. Hydraulic nuts are large nuts with large volume and heavy weight. At the same time, since the rudder blades work under the waterline for a long time, the hydraulic nuts need to be set in a sealed cavity to avoid corrosion. However, the space of the sealed cavity is limited, and the settings of many sealed cavities are not convenient for divers to inspect the working conditions. Utility Model Content

[0003] The utility model aims to provide a device for underwater observation of a hydraulic nut of a ship's rudder system, so as to solve the problems raised in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A device for underwater observation of a hydraulic nut of a ship's rudder system comprises a welding seat, one end of which is provided with a sealing cover, and the other end of which is provided with an observation lens. The cross section of the internal space of the welding seat is T-shaped, and the cross section of the sealing cover is T-shaped.

[0006] A sealing ring is installed between the sealing cover and the welding seat, and an annular groove is arranged on the lower end surface of the extending part of the sealing cover, and the sealing ring is installed in the annular groove.

[0007] A pressure ring is installed between the sealing cover and the observation lens, and the number of the pressure rings is 2 and they are located on the left and right sides respectively.

[0008] A No. 1 sealing gasket is installed between the observation lens and the welding seat.

[0009] A No. 2 sealing gasket is installed between the pressure ring and the observation lens.

[0010] A locking block is spot-welded between the welding seat and the sealing cover.

[0011] The upper end surface of the sealing cover is provided with a spanner hole, and the spanner hole is used for tightening or loosening with a spanner.

[0012] Beneficial effects: The present application provides an observation device for conveniently, accurately and quickly checking the locking status of hydraulic nuts during underwater inspections of rudder systems of various types of ships. This device is suitable for various types of ships, and each component is compact and small, with stable performance, convenient and quick operation. The entire device is easy to install, has a stable structure, and is easy to operate, which is convenient for onboard construction and ship operation management. Compared with traditional hinged observation covers, this device has the characteristics of small structure, little impact on the opening of the rudder blade structure, stability and reliability, strong corrosion resistance, simple operation, and easy construction and operation management. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is an enlarged schematic diagram of part A;

[0015] Figure 3 It is a schematic diagram of the sealing cover structure;

[0016] Figure 4 This is a schematic diagram of the structure of the utility model (with a wrench);

[0017] In the figure: welding seat 1, sealing cover 2, observation lens 3, sealing ring 4, annular groove 5, pressure ring 6, No. 1 sealing gasket 7, No. 2 sealing gasket 8, locking block 9, wrench hole 10, wrench 11, spot welding position 12, rudder blade structure 13. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, the following description is provided in conjunction with the accompanying drawings and embodiments.

[0019] As shown in the figure,

[0020] A device for underwater observation of a hydraulic nut of a ship's rudder system, comprising a welding seat 1, one end of the welding seat 1 is provided with a sealing cover 2, the other end of the welding seat 1 is provided with an observation lens 3, the cross section of the internal space of the welding seat 1 is T-shaped, the cross section of the sealing cover 2 is T-shaped, a sealed cavity is formed by installing between the welding seat 1 and the observation lens 3, corrosion of the hydraulic nut is avoided, and at the same time, through the setting of the observation lens 3, the locking state of the hydraulic nut of the rudder system can be checked underwater (without docking), the underwater inspection can be completed conveniently and quickly, the inspection process is shortened, and it has certain economic value.

[0021] A sealing ring 4 is installed between the sealing cover 2 and the welding seat 1. The lower end surface of the extended portion of the sealing cover 2 is provided with an annular groove 5. The sealing ring 4 is installed in the annular groove 5. The setting of the sealing ring 4 prevents the liquid from flowing inward. The sealing ring 4 can fill the gap between the two parts to form a closed space to prevent the fluid from entering from the connection or joint.

[0022] A pressure ring 6 is installed between the sealing cover 2 and the observation lens 3. There are two pressure rings 6, which are respectively located on the left and right sides. The pressure ring 6 uses threads to press the sealing gasket and the observation lens 3, so as to achieve watertightness conveniently and reliably.

[0023] A No. 1 sealing gasket 7 is installed between the observation lens 3 and the welding seat 1, and a No. 2 sealing gasket 8 is installed between the pressure ring 6 and the observation lens 3. The two sealing gaskets also play a sealing role to prevent fluid from entering from the connection or joint.

[0024] A lock is spot-welded between the welding seat 1 and the sealing cover 2 to fix the whole.

[0025] The upper end surface of the sealing cover 2 is provided with a spanner hole 10, and the spanner hole 10 is used to tighten or loosen with a spanner 11. The fastening state of the rudder system hydraulic nut can be observed underwater or above water by observing the lens 3. When a problem with the hydraulic nut is found, the welding point on the locking block 9 is knocked out, and a special spanner 11 is used to insert the matching hole groove, and the sealing cover 2 is rotated and screwed out. After adjusting the hydraulic nut, it is convenient to restore, and only the special spanner 11 needs to be used to screw in the sealing cover 2, and then the locking block 9 is spot welded.

[0026] This observation device has a small opening on the rudder blade structure 13, which has little damage to the structural strength. The locking state of the rudder system hydraulic nut can be checked underwater (without docking), which can complete the underwater inspection conveniently and quickly, shorten the inspection process, and has certain economic value.

[0027] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0028] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings attached to this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention.

Claims

1. A device for underwater observation of hydraulic nuts of a ship's rudder system, characterized in that: It includes a welding seat, one end of which is equipped with a sealing cover, the other end of the welding seat is equipped with an observation lens, the cross-section of the internal space of the welding seat is T-shaped, the cross-section of the sealing cover is T-shaped, a sealing ring is installed between the sealing cover and the welding seat, the lower end surface of the sealing cover extension is equipped with an annular groove, and the sealing ring is installed in the annular groove.

2. The device for underwater observation of hydraulic nuts of a ship's rudder system according to claim 1, characterized in that: A pressure ring is installed between the sealing cover and the observation lens, and the number of the pressure rings is 2 and they are located on the left and right sides respectively.

3. The device for underwater observation of hydraulic nuts of a ship's rudder system according to claim 1, characterized in that: A No. 1 sealing gasket is installed between the observation lens and the welding seat.

4. The device for underwater observation of hydraulic nuts of a ship's rudder system according to claim 2, characterized in that: A No. 2 sealing gasket is installed between the pressure ring and the observation lens.

5. The device for underwater observation of hydraulic nuts of a ship's rudder system according to claim 1, characterized in that: A locking block is spot-welded between the welding seat and the sealing cover.

6. The device for underwater observation of hydraulic nuts of a ship's rudder system according to claim 1, characterized in that: The upper end surface of the sealing cover is provided with a spanner hole, and the spanner hole is used for tightening or loosening with a spanner.

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