Sleeve rudder structure of ship
By setting hand holes and through holes on the rudder structure of the ship's sleeve, divers allow to measure the gap between the bushing and the shaft sleeve underwater, the problem of frequent entry of ships into the dock in the prior art is solved, and the detection without entering the dock is achieved. Extend operation time and reduce economic losses.
Patent Information
- Application Number
- CN202421080418.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-17
AI Technical Summary
Under the prior art, oil-lubricated ship sleeve rudder structure needs to frequently enter the dock for bushing and shaft sleeve clearance detection, resulting in a long detection cycle, shortening ship operation time and increasing economic losses.
A ship sleeve rudder structure is designed, by setting hand holes and through holes on the rudder blades, allowing divers to measure the gap between the bushing and the sleeve underwater through the feeler gauge, avoiding oil leakage, and through screw plugs Rotated in the reamer to seal the lubricant, enabling detection without entering the dock.
The inspection of bushing and bushing clearance at any time and place is achieved, extending ship operation time, reducing economic losses, and improving the accuracy and safety of inspections.
Smart Images
Figure CN222224413U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ship detection, in particular to a ship sleeve rudder structure. Background Art
[0002] In the underwater inspection of the ship's sleeve rudder structure, the measurement of the gap between the bushing on the inside of the rudder sleeve and the sleeve on the outside of the rudder shaft is an important inspection item. The rudder shaft is inserted into the rudder sleeve, and the gap between the sleeve on the rudder shaft and the bushing on the inside of the rudder sleeve needs to be measured. According to the requirements of the classification regulations, if the bushing is made of non-metallic material, the gap between the bushing and the sleeve cannot be less than 1.5mm to ensure that there is still enough rotational clearance between the bushing and the sleeve after the non-metallic material expands in water. At the same time, the gap between the bushing and the sleeve cannot be too large. The gap between the bushing and the sleeve needs to be controlled within 2.5mm. If the gap exceeds 5mm after the ship is put into operation, the bushing needs to be replaced to ensure the safe operation of the entire rudder system and the strength of each component of the rudder system.
[0003] The oil-lubricated bushing is an installation form of the ship's sleeve rudder structure. Oil is filled between the bushing and the shaft sleeve, and a skeleton sealing ring is installed on the lower side of the matching point between the bushing and the shaft sleeve to prevent oil leakage. In order to avoid the oil leaking into the sea water, the gap between the bushing and the shaft sleeve cannot be detected underwater. Under the existing technology, if it is necessary to detect the gap between the bushing and the shaft sleeve, the ship needs to be driven into the dock, the skeleton sealing ring is taken out, and then measured with a feeler gauge. After the measurement is completed, oil is poured again, and the skeleton sealing ring is used to seal the oil into the gap between the bushing and the shaft sleeve. However, it takes a long time to disassemble, inspect and repair the ship when it enters the dock, and the gap between the bushing and the shaft sleeve needs to be inspected frequently, which will shorten the operating time of the ship and cause economic losses. Utility Model Content
[0004] The utility model aims to provide a ship sleeve rudder structure, which solves the problem that the oil-lubricated bushing and shaft sleeve in the prior art need to enter the dock for clearance detection, thus causing economic losses.
[0005] To achieve this purpose, the utility model adopts the following technical scheme: the utility model provides a ship sleeve rudder structure, including a steering gear, the steering gear drives the rudder stock to rotate, the rudder stock drives the rudder blade to rotate, a plug-in portion is formed on the rudder blade, the rudder stock is arranged in the plug-in portion, a hand hole is opened on the plug-in portion, a rudder sleeve is sleeved on the outer side of the rudder stock, the rudder sleeve is arranged in the plug-in portion, a bushing is installed in the rudder sleeve, a shaft sleeve is sleeved on the rudder stock, lubricating oil is arranged between the bushing and the shaft sleeve, and the shaft sleeve and the bushing are A skeleton sealing ring is installed at the lower side of the gap, a first through hole is provided on the bushing, a second through hole is provided on the rudder sleeve, the first through hole is connected to the second through hole, the axes of the first through hole and the second through hole coincide with each other, a feeler gauge can be inserted into the first through hole and the second through hole, the top end of the feeler gauge is inserted into the gap between the sleeve and the bushing, a thread is provided at one end of the second through hole away from the rudder stock, a screw plug is screwed into the thread; the hand hole can rotate with the rudder blade to the end of the second through hole away from the rudder stock.
[0006] Preferably, the hand hole is semicircular, and a chamfer is provided at the edge of the hand hole.
[0007] Preferably, epoxy resin is applied on the junction between the screw plug and the rudder sleeve.
[0008] Preferably, the first through holes and the second through holes correspond one to one, four groups of the first through holes are provided, four groups of the second through holes are provided, two groups of the first through holes are symmetrically arranged on both sides of the longitudinal axis of the ship, and the angle between the axis of the first through holes and the longitudinal axis of the ship is 45°.
[0009] Preferably, the hand holes include two groups, and the hand holes are symmetrically opened on both sides of the longitudinal axis of the ship.
[0010] Preferably, the angle formed by the axis of the first through hole and the axis of the rudder stock is an acute angle.
[0011] Preferably, the diameter of the first through hole is 8-10 mm, and the diameter of the second through hole is 8-10 mm.
[0012] Preferably, a reamer is formed at one end of the second through hole away from the axis of the rudder bar, the diameter of the reamer is larger than that of the second through hole, a gasket is laid at the bottom of the reamer, the thread is formed on the side wall of the reamer, and the screw plug is screwed into the reamer and abuts against the gasket.
[0013] Beneficial effect: when it is necessary to detect the gap between the bushing and the shaft sleeve, the rudder blade is rotated, and then the position of the screw plug can be exposed through the hand hole. After the personnel remove the screw plug through the hand hole underwater, the feeler gauge is inserted into the gap between the shaft sleeve and the bushing along the second through hole and the first through hole. After the measurement is completed, the screw plug is screwed into the second through hole to prevent the oil in the gap between the shaft sleeve and the bushing from leaking into the sea water. In this way, the ship can measure the gap between the shaft sleeve and the bushing at any time and place without entering the dock, thereby extending the operation time of the ship and reducing economic losses. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is an axial cross-sectional view of the ship sleeve rudder structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the feeler gauge plug-in detection of the utility model;
[0016] Figure 3 This is the main body diagram of the utility model feeler gauge;
[0017] Figure 4 It is a radial cross-sectional view of the rudder sleeve of the utility model.
[0018] In the figure: 1, steering gear; 2, rudder stock; 3, rudder blade; 31, plug-in part; 311, hand hole; 4, shaft sleeve; 5, bushing; 51, first through hole; 6, skeleton sealing ring; 7, rudder sleeve; 71, second through hole; 72, expansion hole; 8, screw plug; 9, feeler gauge; 91, detection end; 92, rubber round plug. DETAILED DESCRIPTION
[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0021] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0022] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0023] Under the existing technology, when inspecting the oil-lubricated clearance of a ship's sleeve rudder structure, it is necessary to drive the ship into the dock, drain the seawater, take out the sealing frame, drain the oil, and then conduct a clearance inspection. This detection cycle is relatively long. If the ship is frequently docked, the operating time of the ship will be shortened, increasing economic losses.
[0024] In order to solve the above problems, Figures 1 to 4 As shown, the utility model provides a ship sleeve rudder structure, including a steering gear 1, the steering gear 1 drives the rudder stock 2 to rotate, the rudder stock 2 drives the rudder blade 3 to rotate, the rudder blade 3 is formed with a plug-in portion 31, the rudder stock 2 is arranged in the plug-in portion 31, a hand hole 311 is opened on the side wall of the plug-in portion 31, a rudder sleeve 7 is sleeved on the outer side of the rudder stock 2, the rudder sleeve 7 is arranged in the plug-in portion 31, a bushing 5 is installed in the rudder sleeve 7, a shaft sleeve 4 is sleeved on the rudder stock 2, a lubricating oil is arranged between the bushing 5 and the shaft sleeve 4, and a lubricating oil is provided on the bushing 5. A first through hole 51 is provided, and a second through hole 71 is provided on the rudder sleeve 7. The first through hole 51 is communicated with the second through hole 71, and the axes of the first through hole 51 and the second through hole 71 coincide with each other. A feeler gauge 9 can be inserted into the first through hole 51 and the second through hole 71, and the top end of the feeler gauge 9 is inserted into the gap between the sleeve 4 and the bushing 5. A thread is provided at one end of the second through hole 71 away from the rudder stock 2, and a screw plug 8 is screwed into the thread; the hand hole 311 can rotate with the rudder blade 3 to the end of the second through hole 71 away from the rudder stock 2.
[0025] When performing the gap detection, the ship does not need to enter the dock. The diver can go into the water to detect it with a feeler gauge 9. Since oil is filled between the bushing 5 and the shaft sleeve 4, in order to avoid oil leakage, a skeleton sealing ring 6 is installed at the bottom of the gap between the bushing 5 and the shaft sleeve 4. By rotating the rudder blade 3, the hand hole 311 on the rudder blade 3 is rotated to the side of the opening position of the second through hole 71. The diver can wipe off the epoxy resin on the screw plug 8 through the hand hole 311, then unscrew the screw plug 8, and insert the feeler gauge 9 into the first through hole 51 along the second through hole 71. Then, the detection end 91 of the feeler gauge 9 will reach the gap between the bushing 5 and the shaft sleeve 4. The feeler gauge 9 generally includes multiple detection pieces with different thicknesses, so that the size of the gap can be tested. Then, the feeler gauge 9 is taken out, the screw plug 8 is screwed in, and epoxy resin is applied again. This can avoid leakage of oil between the bushing 5 and the shaft sleeve 4. A ship adopting the ship sleeve rudder structure of the utility model can detect the gap between the bushing 5 and the shaft sleeve 4 at any time or place. The diver can perform the detection after entering the water, and the ship does not need to enter the dock for detection, which can extend the ship's operating time and reduce economic losses. At the same time, the provision of the screw plug 8 can prevent the lubricating oil between the bushing 5 and the shaft sleeve 4 from leaking.
[0026] The feeler gauge 9 used in the present invention is a prior art and is not described in detail herein. A rubber round plug 92 is installed on the portion of the feeler gauge 9 extending into the second through hole 71. The rubber round plug 92 can be plugged on the second through hole 71 to prevent the lubricating oil between the bushing 5 and the shaft sleeve 4 from leaking out.
[0027] The hand hole 311 of the utility model is semicircular, and the radius of the hand hole 311 is 250mm to 300mm, so that the hand can be easily inserted into the hand hole 311, and the wrist can flexibly control the direction of the detection end 91 of the feeler gauge 9. The edge of the hand hole 311 is chamfered to prevent the diver's arm from being cut, thereby increasing safety.
[0028] The junction between the screw plug 8 and the rudder sleeve 7 is coated with epoxy resin, which can prevent the lubricating oil from leaking to the outside when the ship is sailing, and can maintain the lubrication between the bushing 5 and the shaft sleeve 4 for a long time.
[0029] The first through holes 51 and the second through holes 71 correspond one to one, four groups of first through holes 51 are provided, and four groups of second through holes 71 are provided. Two groups of first through holes 51 are symmetrically arranged on both sides of the longitudinal axis of the ship, and the angle between the axis of the first through hole 51 and the longitudinal axis of the ship is 45°.
[0030] When the rudder blade 3 of the ship is not rotated, the whole is aligned with the length direction of the ship. At this time, the screw plug 8 is located inside the plug-in portion 31 and is not exposed from the hand hole 311. This can avoid the impact of seawater and reduce the probability of epoxy resin falling off. When the rudder blade 3 rotates and the screw plug 8 is exposed, the diver can disassemble and assemble the screw plug 8 along the hand hole 311.
[0031] By arranging four groups of first through holes 51 circumferentially around the rudder bar 2, comprehensive inspection can be performed on different positions of the annular gap between the bushing 5 and the shaft sleeve 4. When one of the gaps is not in compliance, it can be replaced in time to improve the accuracy of the inspection.
[0032] The hand holes 311 include two groups, and the hand holes 311 are symmetrically opened on both sides of the symmetric axis in the length direction of the ship. When the rudder blade 3 is fully steered to the left or right, the two groups of second through holes 71 on one side of the axis in the length direction of the ship can be exposed under the hand holes 311 on the same side, and the diver can remove the screw plug 8, so that the gap size between the bushing 5 and the shaft sleeve 4 at different positions can be detected, thereby improving the accuracy of the gap detection.
[0033] The feeler gauge 9 is a thin sheet structure, and the angle formed by the axis of the first through hole 51 and the axis of the rudder stock 2 is an acute angle. After the feeler gauge 9 enters, the feeler gauge 9 abuts against the surface of the sleeve 4. After the feeler gauge 9 is bent, it is pushed into the gap between the sleeve 5 and the sleeve 4. The above-mentioned acute angle structure makes it easy to bend the front end of the feeler gauge 9, making the detection more labor-saving and convenient for the diver to operate.
[0034] The diameter of the first through hole 51 of the utility model is 8-10 mm, and the diameter of the second through hole 71 is 8-10 mm. The diameters of the first through hole 51 and the second through hole 71 can accommodate feeler gauges 9 of all specifications, which is convenient for gap detection.
[0035] An expanded hole 72 is provided at one end of the second through hole 71 of the utility model away from the axis of the rudder stock 2. The diameter of the expanded hole 72 is larger than that of the second through hole 71. A gasket is laid at the bottom of the expanded hole 72. A thread is formed on the side wall of the expanded hole 72. The screw plug 8 is screwed into the expanded hole 72 and abuts against the gasket. By providing the gasket, the screw plug 8 can have a stronger ability to be screwed and sealed, thereby preventing the intrusion of external seawater when the ship is sailing normally.
[0036] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. A ship sleeve rudder structure, characterized in that: The invention comprises a steering gear (1), wherein the steering gear (1) drives a rudder stock (2) to rotate, and the rudder stock (2) drives a rudder blade (3) to rotate, and a plug-in portion (31) is formed on the rudder blade (3), and the rudder stock (2) is arranged in the plug-in portion (31), and a hand hole (311) is opened on the plug-in portion (31), and a rudder sleeve (7) is sleeved on the outer side of the rudder stock (2), and the rudder sleeve (7) is arranged in the plug-in portion (31), and a bushing (5) is installed in the rudder sleeve (7), and a shaft sleeve (4) is sleeved on the rudder stock (2), and lubricating oil is provided between the bushing (5) and the shaft sleeve (4), and a skeleton sealing ring (6) is installed at the lower side of the gap between the shaft sleeve (4) and the bushing (5), and the bushing A first through hole (51) is provided on the shaft sleeve (5), a second through hole (71) is provided on the rudder sleeve (7), the first through hole (51) is connected to the second through hole (71), the axes of the first through hole (51) and the second through hole (71) coincide with each other, a feeler gauge (9) can be inserted into the first through hole (51) and the second through hole (71), the top end of the feeler gauge (9) is inserted into the gap between the shaft sleeve (4) and the bushing (5), a thread is provided at one end of the second through hole (71) away from the rudder stock (2), a screw plug (8) is screwed into the thread; the hand hole (311) can rotate with the rudder blade (3) to the end of the second through hole (71) away from the rudder stock (2).
2. The ship sleeve rudder structure according to claim 1, characterized in that: The hand hole (311) is semicircular, and a chamfer is provided at the edge of the hand hole (311).
3. The ship sleeve rudder structure according to claim 1, characterized in that: The junction between the screw plug (8) and the rudder sleeve (7) is coated with epoxy resin.
4. The ship sleeve rudder structure according to claim 1, characterized in that: The first through holes (51) and the second through holes (71) correspond one to one, four groups of the first through holes (51) are provided, and four groups of the second through holes (71) are provided, two groups of the first through holes (51) are symmetrically arranged on both sides of the longitudinal axis of the ship, and the angle between the axis of the first through holes (51) and the longitudinal axis of the ship is 45°.
5. The ship sleeve rudder structure according to claim 4, characterized in that: The hand holes (311) include two groups, and the hand holes (311) are symmetrically opened on both sides of the axis in the longitudinal direction of the ship.
6. The ship sleeve rudder structure according to claim 1, characterized in that: The angle formed by the axis of the first through hole (51) and the axis of the rudder stock (2) is an acute angle.
7. The ship sleeve rudder structure according to claim 1, characterized in that: The diameter of the first through hole (51) is 8-10 mm, and the diameter of the second through hole (71) is 8-10 mm.
8. The ship sleeve rudder structure according to claim 1, characterized in that: An expanded hole (72) is formed at one end of the second through hole (71) away from the axis of the rudder bar (2); the diameter of the expanded hole (72) is larger than that of the second through hole (71); a gasket is laid at the bottom of the expanded hole (72); the thread is formed on the side wall of the expanded hole (72); the screw plug (8) is screwed into the expanded hole (72) and abuts against the gasket.