Underwater observation device for loosening condition of hydraulic nut at rudder stock and rudder pintle of ship

Abstract

The utility model relates to an underwater observation device for the loosening condition of a hydraulic nut at a rudder stock and a rudder pintle of a ship, which belongs to the technical field of ship maintenance and comprises an observation device body, a stop strip and a wrench, the observation device body comprises a shell, a sleeve, transparent glass and a cock, and the transparent glass and the sleeve are arranged in the shell. Two counterbores are symmetrically formed in the other side of the sleeve, and a cock is arranged in the sleeve in a sealed mode; a rudder stock and a rudder pintle of a ship are in threaded connection with hydraulic nuts respectively, and stop strips are embedded into the lower end of the rudder stock and the lower end of the rudder pintle respectively. The wrench comprises a handle and fixing rods, the two cylindrical fixing rods are symmetrically arranged on one side of the handle, the fixing rods on the wrench are arranged in the counter bores, and the sleeve is mounted and dismounted by rotating the handle; the observation device is simple in structure and convenient to mount and dismount, whether the hydraulic nut is loosened or not can be quickly observed, the device can be used for lubricating and maintaining the nut, the detection and maintenance efficiency is improved, and the labor and material cost of rudder blade maintenance is reduced.

Description

Technical Field

[0001] The utility model relates to an underwater observation device, in particular to an underwater observation device for the loosening of a hydraulic nut at a rudder stock and pintle of a ship, and belongs to the technical field of ship maintenance. Background Art

[0002] The loosening of the hydraulic nut at the rudder stock pintle in a ship is a common fault. If the nut is loose, it may cause the rudder blade to loosen or even fall off, affecting the ship's heading stability and direction control. Observing the looseness of the hydraulic nut and repairing it in time is crucial for the safe operation of the ship.

[0003] Traditionally, to observe whether the hydraulic nut at the rudder stock and pintle on the rudder blade of a ship is loose, it is necessary to use technical hands to adjust the buoyancy of the ship and expose the part of the rudder blade at the rear of the ship that needs to be repaired to the surface of the water. It takes several workers 1 to 2 days to disassemble the equipment and observe the looseness of the hydraulic nut of the rudder blade and rudder stock (rudder pintle). It is impossible to quickly and conveniently observe whether the hydraulic nut at the rudder stock and pintle on the rudder blade is loose, and decide whether it needs to be disassembled for repair. The traditional method has high labor and material costs.

[0004] At present, patent CN204021200U discloses an underwater observation plug for a ship, which comprises a hollow tubular plug seat, the inner wall of which is sealed with glass, and a plug cover is also sealed at the end of the plug seat facing the seawater. The observation plug can be used for underwater observation, and has the advantages of convenient operation, safety, reliability, and low cost. However, the observation plug has many components, a complex structure, and is cumbersome to install and disassemble. In addition, a ruler is provided on the glass, which can easily scratch and damage the glass and cannot be seen clearly, and the accuracy is insufficient, which reduces the service life of the glass. The installation and disassembly of the observation plug is time-consuming and labor-intensive, and there is no specific tool adaptation, and the labor intensity is high.

[0005] Therefore, developing an underwater observation device for the loosening of the hydraulic nut at the rudder stock and rudder pintle of a ship that can overcome the above defects has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide an underwater observation device for the loosening of the hydraulic nut at the rudder stock and rudder pintle of a ship. The observation device has a simple structure and is easy to install and disassemble. It can quickly observe whether the hydraulic nut at the rudder stock and rudder pintle is loose without the rudder blade leaving the water surface or disassembling the rudder blade, providing support for judging whether the rudder blade needs to be disassembled for maintenance, improving the efficiency of detecting the loosening of the hydraulic nut at the rudder stock and rudder pintle of a ship, and reducing labor and material costs.

[0007] In order to solve the above technical problems, the utility model provides an underwater observation device for the loosening of a hydraulic nut at a rudder stock and rudder pintle of a ship, comprising an observation device body, a stopper bar and a wrench. The observation device body is arranged on a ship rudder blade at a position directly opposite to the hydraulic nut at the rudder stock and rudder pintle. The observation device body comprises a shell, a sleeve, a transparent glass and a cock. The shell is provided with a transparent glass and a sleeve, the sleeve is threadedly connected in the shell, the sleeve is pressed against the transparent glass to fix the transparent glass in the shell, two countersunk holes are symmetrically arranged on one side of the sleeve away from the transparent glass, and a cock connected with a thread is sealed in the sleeve;

[0008] The rudder stock and the rudder pintle of the ship are respectively threadedly connected with hydraulic nuts, and the lower ends of the rudder stock and the rudder pintle provided with the hydraulic nuts are respectively embedded with stop bars, and the lower ends of the stop bars are respectively flush with the lower ends of the rudder stock and the rudder pintle, and the stop bars are located below the corresponding hydraulic nuts;

[0009] The wrench includes a handle and a fixing rod. Two cylindrical fixing rods are symmetrically arranged on one side of the handle. The fixing rods are matched with the countersunk holes on the sleeve. The fixing rods on the wrench are arranged in the countersunk holes. The sleeve can be installed and removed by rotating the handle.

[0010] The technical solution further defined in the utility model is:

[0011] Furthermore, in the underwater observation device for loosening of hydraulic nuts at the rudder stock and rudder pin of the aforementioned ship, the shell is a hollow tubular structure, the inner wall of the shell is provided with an internal thread, the upper end of the shell extends inward to form a fixed edge, the fixed edge is perpendicular to the shell, one side of the transparent glass abuts against the fixed edge of the shell, and the other side abuts against the sleeve, a sealing O-ring is provided between the transparent glass and the fixed edge, and a sealing gasket is provided between the transparent glass and the sleeve.

[0012] Technical effect: The utility model has a fixing edge extending inward on the shell to fix the transparent glass well, without the need for other bushings or fixing methods, and uses its own structure for fixing, thereby reducing the number of components and the complexity of assembly; a sealing O-ring is provided between the transparent glass and the fixing edge, and a sealing gasket is also provided between the transparent glass and the sleeve to improve the sealing, prevent water ingress, and facilitate observation.

[0013] In the underwater observation device for loosening of hydraulic nuts at the rudder stock and rudder pin of the above-mentioned ship, the outer wall of the sleeve is provided with an external thread, the inner wall of the sleeve is provided with an internal thread, one end of the sleeve is provided with a countersunk hole and is concave to form a fixing groove, a sealing gasket is provided in the fixing groove, and the fixing groove is used to fix the plug.

[0014] Technical effect: The sleeve is threadedly connected in the shell, which is convenient for installation and disassembly. The sleeve is provided with a countersunk hole for easy installation and disassembly with a wrench, which reduces labor intensity and improves efficiency. The plug is provided with an external thread, which is threadedly connected in the sleeve, which is convenient for installation and disassembly. The sealing between the plug and the sleeve is further improved by the fixing groove and the sealing gasket. When the plug needs to be observed, the plug can be unscrewed with a universal wrench to observe; when further observation is required and lubricating grease needs to be added to the nut, the ship's ballast condition can be adjusted to separate the rudder blade from the water surface, and then a worker inserts the fixing rod of the wrench into the countersunk hole of the sleeve, and the sleeve 2 can be easily opened by rotating it for further observation. While further observing, an appropriate amount of lubricating grease can be injected into the nut through this hole to maintain the nut. In the underwater observation device for the loosening of the hydraulic nut at the rudder stock and rudder pin of the aforementioned ship, an operating part is provided in the middle of the plug, and the two ends of the plug extend outward to form a plug fixing edge, and the plug fixing edge is perpendicular to the plug.

[0015] Technical effect: The utility model extends outwards at both ends of the plug to form a plug fixing edge, which is perpendicular to the plug, so that the plug can be better sealed and fixed in the sleeve, and also plays a limiting role to make the outer surface of the plug flush with the outer surface of the rudder blade. An inner concave four-corner structure operating part is provided in the middle of the plug, and the plug can be installed and disassembled directly through a T-shaped square rod, which is convenient for normal observation through transparent glass. This operation is convenient, saving time and effort.

[0016] In the underwater observation device for loosening of hydraulic nuts at the rudder blade, rudder stock and rudder pintle of the aforementioned ship, an end of the fixed side away from the shell is chamfered; an end of the upper end of the shell away from the fixed side is chamfered.

[0017] Technical effect: The utility model has chamfers on the fixed edge and the edge of the shell, replacing the sharp edges, avoiding scraping the rudder blade shell or scratching other components during installation, ensuring safety while extending the service life.

[0018] In the underwater observation device for loosening of hydraulic nuts at the rudder stock and rudder pintle of the aforementioned ship, the shell is a carbon steel shell with a thickness of 60 mm.

[0019] Technical effect: The utility model strictly limits the thickness of the shell, and the 60mm carbon steel shell has higher strength and stability, which prolongs the service life and reduces the cost.

[0020] In the underwater observation device for loosening of hydraulic nuts at the rudder stock and rudder pintle of the aforementioned ship, the transparent glass is borosilicate glass with a thickness of 15 mm.

[0021] Technical effect: high-transparency borosilicate glass with a thickness of 15mm is used. This glass has high strength and good visibility. Compared with the existing patent where the ruler on the glass will scratch the glass and make it unclear, the observation window of the utility model can better meet the needs of users and observe looseness and falling off problems more quickly and accurately.

[0022] In the underwater observation device for loosening of hydraulic nuts at the rudder stock and rudder pintle of the aforementioned ship, the handle is an I-shaped structure, one end of a fixed rod on the handle is a working part, and the other end is a hand-holding part, and the hand-holding part on the handle is a square rod.

[0023] Technical effect: The utility model adopts an I-shaped structure, one end of which is convenient for insertion and fixing, and the other end is hand-tightened. This kind of twisting after elongation is easier to operate. Compared with the wrench on the horizontal plane, the use angle is wider and more convenient to use. The holding part is a square rod to avoid slipping and is more convenient to hold with force.

[0024] The beneficial effects of the utility model are:

[0025] The utility model has a simple structure and is easy to operate: the device has a simple structure and is light in weight. Only one worker needs to hold a wrench to operate the installation and disassembly, which reduces the difficulty of labor and improves work efficiency. There is no need to disassemble the rudder blade: the device can quickly detect whether the hydraulic nut installed on the rudder blade is loose without the rudder blade leaving the water surface, thus avoiding the tedious operation caused by disassembling the rudder blade, saving time and labor. The utility model is easy to use. A submariner can use the underwater observation device for the looseness of the hydraulic nut at the rudder stock and rudder pintle of the ship underwater to quickly observe whether the hydraulic nut at the rudder stock and rudder pintle on the rudder blade is loose. There is no need to expose the rudder blade to the water surface to disassemble the rudder blade, which saves time and labor. It saves time and manpower; improves maintenance efficiency: the looseness of the hydraulic nut at the rudder stock and rudder pintle on the rudder blade can be observed without disassembly, avoiding the loosening of the rudder blade or even falling off due to loose nuts, affecting the ship's heading stability and direction control, and improving the safety of ship operation; saves maintenance costs: this device can quickly determine whether the hydraulic nut at the rudder stock and rudder pintle needs maintenance underwater, avoiding unnecessary floating state adjustments and rudder blade disassembly and installation processes, thereby saving a lot of maintenance costs for ship operating companies; safe and environmentally friendly: detection without disassembling the rudder blade reduces construction risks and ensures the safety of ship operation. It reduces material loss and is beneficial to environmental protection; strong applicability: this device can be applied to ships of different types and sizes and has a wide range of applications.

[0026] The utility model is a non-disassembly visual detection device that is simple to manufacture, safe and environmentally friendly, and can conveniently detect whether the hydraulic nut of the rudder stock and pintle on the rudder blade is loose. The device can quickly observe whether the hydraulic nut at the rudder stock and pintle is loose without disassembling the rudder blade without leaving the water surface, and provides support for judging whether the rudder blade needs to be disassembled for maintenance. The efficiency of detecting the looseness of the hydraulic nut at the rudder stock and pintle of the ship is improved, and the labor and material costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of an underwater observation device for the loosening of a hydraulic nut at a rudder stock and pintle of a ship according to an embodiment of the utility model;

[0028] Figure 2 for Figure 1 The structural diagram of the observation device body;

[0029] Figure 3 for Figure 2 A schematic diagram of the structure of the middle shell;

[0030] Figure 4 for Figure 2 A schematic diagram of the structure of the middle sleeve;

[0031] Figure 5 for Figure 2 Schematic diagram of the structure of the middle plug;

[0032] Figure 6 It is a structural diagram of the installation and disassembly of the plug;

[0033] Figure 7 for Figure 2 Schematic diagram of the structure of the middle sealing O-ring;

[0034] Figure 8 for Figure 1 The structural diagram of the middle wrench;

[0035] Fig. 9 This is a schematic diagram of the structure of the observation device of the utility model embodiment installed on a ship;

[0036] Fig.10 for Fig. 9 A schematic diagram of the enlarged structure of part A;

[0037] Fig.11 The situation where the hydraulic nut falls when the observation device of the embodiment of the utility model is observed;

[0038] Fig.12 The situation of the hydraulic nut being loosened when the observation device of the embodiment of the utility model is observed;

[0039] In the figure: 1-shell, 2-sleeve, 3-transparent glass, 4-cock, 41-operating part, 42-cock fixing edge, 5-stop strip, 6-wrench, 61-handle, 62-fixing rod, 7-countersunk hole, 8-hydraulic nut, 9-rudder stock, 10-fixing edge, 11-sealing O-ring, 12-sealing gasket, 13-fixing groove, 14 rudder pin, 15-rudder blade. DETAILED DESCRIPTION

[0040] 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 them; the technical features involved in the various implementation methods of the utility model described below can be combined with each other as long as they do not conflict with each other. 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. Example 1

[0041] This embodiment provides an underwater observation device for the loosening of a hydraulic nut at a rudder stock pintle of a ship, the structure of which is as follows: Figure 1 , 9 As shown in 10, it includes an observation device body, a stop bar 5 and a wrench 6, and the observation device body is arranged on the rudder blade of the ship at a position directly opposite to the hydraulic nut at the rudder stock and rudder pintle;

[0042] like Figure 2 The observation device body shown comprises a shell 1, a sleeve 2, a transparent glass 3 and a cock 4. The transparent glass 3 and the sleeve 2 are arranged in the shell 1. The sleeve 2 is threadedly connected in the shell 1. The sleeve 2 abuts against the transparent glass 3 to fix the transparent glass 3 in the shell 1. Two countersunk holes 7 are symmetrically arranged on one side of the sleeve 2 away from the transparent glass 3. The cock 4 connected by threads is sealed in the sleeve 2.

[0043] like Figure 3 The housing 1 is a hollow tubular structure, the inner wall of the housing 1 is provided with an internal thread, the upper end of the housing 1 extends inward to form a fixed edge 10, the fixed edge 10 is perpendicular to the housing 1, one side of the transparent glass 3 is against the fixed edge 10 of the housing 1, and the other side is against the sleeve 2, a sealing O-ring fixing groove is provided on the transparent glass, and a sealing O-ring 11 is provided between the transparent glass 3 and the fixed edge 10. Figure 7 As shown, a sealing gasket 12 is provided between the transparent glass 3 and the sleeve 2; the structure is as follows Figure 4 The outer wall of the sleeve 2 is provided with an external thread, the inner wall of the sleeve 2 is provided with an internal thread, one end of the countersunk hole 7 on the sleeve 2 is concave to form a fixing groove 13, a sealing gasket 12 is provided in the fixing groove 13, and the fixing groove 13 is used to fix the cock 4; the structure is as shown Figure 5-6The middle part of the plug 4 is recessed with an operating portion 41, which is an inner four-corner structure, and is conveniently inserted into a T-shape for installation and removal. Both ends of the plug 4 extend outward to form a plug fixing edge 42, and the plug fixing edge 42 is perpendicular to the plug 4;

[0044] like Fig. 9 The rudder stock 9 and the rudder pintle 14 of the ship shown are respectively threadedly connected with hydraulic nuts 8, and the lower ends of the rudder stock 9 and the rudder pintle 14 provided with the hydraulic nuts 8 are provided with grooves corresponding to the stopper strips, and the grooves are respectively embedded with long strip stopper strips 5, which are then fixed by spot welding, and the lower ends of the stopper strips 5 are respectively flush with the lower ends of the rudder stock 9 and the rudder pintle 14, and the stopper strips 5 are located below the corresponding hydraulic nuts 8;

[0045] like Figure 8 As shown, the handle 61 is an I-shaped structure, and the wrench 6 includes a handle 61 and a fixing rod 62. Two cylindrical fixing rods 62 are symmetrically provided on one side of the handle 61. The fixing rods 62 are adapted to the countersunk holes 7 on the sleeve 2. One end of the fixing rod 62 on the handle 61 is a working part, and the other end is a hand-holding part. The hand-holding part on the handle 61 is a square rod. The fixing rod 62 on the wrench 6 is arranged in the countersunk hole 7. The sleeve 2 can be installed and disassembled by rotating the handle 61.

[0046] In this embodiment, the end of the fixed edge 10 away from the shell 1 is chamfered; the end of the upper end of the shell 1 away from the fixed edge 10 is chamfered; the shell 1 is a carbon steel shell with a thickness of 60 mm; the transparent glass 3 is a borosilicate glass with a thickness of 15 mm. In specific implementation, the observation device body is installed on the maintenance and disassembly plate, and the maintenance and disassembly plate is welded to the shell of the rudder blade 15. The observation device body is vertically arranged so that the observation device body corresponds to the position of the hydraulic nut 8 on the rudder bar 9 and the rudder pintle 14. The transparent glass 3 is inside and close to the hydraulic nut 8, and the plug 4 is outside. A hole is left on the rudder blade 15 facing the observation device body to facilitate observation and operation. The plug 4 used is a stainless steel M52 type drain plug. When underwater observation is required, the diver holds a drain plug wrench (T-shaped square rod) to unscrew the M52 type drain plug through the transparent glass 3 to observe whether the hydraulic nut at the rudder bar and the rudder pintle on the rudder blade is loose. If only the thread is seen through the transparent glass 3, it means that the hydraulic nut has fallen off and needs to be repaired. Fig.11 As shown; if the square stop strip 5 is not visible, it means that the nut is loose. Fig.12 As shown, seeing the stopper strip 5 indicates that everything is normal, which provides a basis for judging whether it needs to be disassembled for maintenance.

[0047] If the water is turbid and cannot be seen clearly (or there is dirt on the inside of the glass that contaminates the transparent glass), if further observation is needed, the rudder blade can be separated from the water surface by adjusting the ship's ballast condition. A worker holds a wrench 6, inserts the fixing rod 62 of the wrench 6 into the countersunk hole 7 of the sleeve 2, and rotates it to easily open the sleeve 2, remove the glass 3, and observe further. At the same time, a proper amount of lubricating grease can be injected into the hole to maintain the nut.

[0048] The observation device of the utility model has superior performance in terms of material, structure and operation, and provides strong support for the maintenance of ship equipment. In practical application, a suitable technical solution can be selected for implementation according to the specific conditions and management requirements of the ship.

[0049] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. An underwater observation device for the loosening of hydraulic nuts at the rudder stock and pintle of a ship, characterized in that: The invention comprises an observation device body, a stopper bar (5) and a wrench (6); the observation device body is arranged on a rudder blade of a ship at a position directly opposite to a hydraulic nut at a rudder stock and a rudder pintle; the observation device body comprises a shell (1), a sleeve (2), a transparent glass (3) and a cock (4); the transparent glass (3) and the sleeve (2) are arranged in the shell (1); the sleeve (2) is threadedly connected in the shell (1); the sleeve (2) abuts against the transparent glass (3) to fix the transparent glass (3) in the shell (1); two countersunk holes (7) are symmetrically arranged on a side of the sleeve (2) away from the transparent glass (3); and a cock (4) connected by a thread is sealed in the sleeve (2); A hydraulic nut (8) is threadedly connected to a rudder stock (9) and a rudder pintle (14) of the ship, respectively; the lower ends of the rudder stock (9) and the rudder pintle (14) provided with the hydraulic nut (8) are respectively embedded with the stop strip (5); the lower ends of the stop strip (5) are respectively flush with the lower ends of the rudder stock (9) and the rudder pintle (14); and the stop strip (5) is located below the corresponding hydraulic nut (8); The wrench (6) comprises a handle (61) and a fixing rod (62). Two cylindrical fixing rods (62) are symmetrically provided on one side of the handle (61). The fixing rods (62) are matched with the countersunk holes (7) on the sleeve (2). The fixing rods (62) on the wrench (6) are arranged in the countersunk holes (7). The sleeve (2) can be installed and removed by rotating the handle (61).

2. The underwater observation device for loosening of hydraulic nuts at the rudder stock and pintle of a ship according to claim 1, characterized in that: The shell (1) is a hollow tubular structure. The inner wall of the shell (1) is provided with an internal thread. The upper end of the shell (1) extends inward to form a fixed edge (10). The fixed edge (10) is perpendicular to the shell (1). One side of the transparent glass (3) abuts against the fixed edge (10) of the shell (1), and the other side abuts against the sleeve (2). A sealing O-ring (11) is provided between the transparent glass (3) and the fixed edge (10), and a sealing gasket (12) is provided between the transparent glass (3) and the sleeve (2).

3. The underwater observation device for loosening of hydraulic nuts at the rudder stock and pintle of a ship according to claim 1, characterized in that: The outer wall of the sleeve (2) is provided with an external thread, the inner wall of the sleeve (2) is provided with an internal thread, one end of the countersunk hole (7) provided on the sleeve (2) is concave to form a fixing groove (13), a sealing gasket (12) is provided in the fixing groove (13), and the fixing groove (13) is used to fix the plug (4).

4. The underwater observation device for loosening of hydraulic nuts at the rudder stock and pintle of a ship according to claim 1, characterized in that: An operating portion (41) is recessed in the middle of the plug (4), and two ends of the plug (4) extend outward to form plug fixing edges (42), wherein the plug fixing edges (42) are perpendicular to the plug (4).

5. The underwater observation device for loosening of hydraulic nuts at the rudder stock and pintle of a ship according to claim 2, characterized in that: An end of the fixed edge (10) away from the shell (1) is chamfered; and an end of the upper end of the shell (1) away from the fixed edge (10) is chamfered.

6. The underwater observation device for loosening of hydraulic nuts at the rudder stock and pintle of a ship according to claim 1, characterized in that: The shell (1) is a carbon steel shell with a thickness of 60 mm.

7. The underwater observation device for loosening of hydraulic nuts at the rudder stock and pintle of a ship according to claim 1, characterized in that: The transparent glass (3) is borosilicate glass with a thickness of 15 mm.

8. The underwater observation device for loosening of hydraulic nuts at the rudder stock and pintle of a ship according to claim 1, characterized in that: The handle (61) is an I-shaped structure, and a fixing rod (62) is provided on the handle (61), one end of which is a working portion, and the other end is a hand-holding portion, and the hand-holding portion on the handle (61) is a square rod.

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