Elastic vibration isolation equipment of ship gearbox
By designing a ship gearbox elastic vibration isolation device that includes a fixed base, rubber pad, vibration isolation plate, transmission column, optional vibration isolation spring and movable valve plate, the problem of poor vibration isolation effect of ship gearbox in the prior art is solved, better shock absorption and vibration isolation effect are achieved, and the stability of the equipment is improved.
Patent Information
- Application Number
- CN202420651667.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The vibration isolation effect of existing ship gear boxes is poor, especially when large vibrations occur, there are still problems such as unsatisfactory shock absorption and poor stability.
An elastic vibration isolation device is designed including a fixed base, rubber pad, vibration isolation plate, transmission column and optional vibration isolation spring and movable valve plate. Through the combination of vibration isolation plate, rubber pad and vibration isolation spring, the air pressure changes of the transmission column and the movable valve plate are used to achieve multi-layer buffering and shock absorption of the ship gear box.
It effectively improves the shock absorption effect of the ship gearbox, enhances vibration isolation performance, improves the stability of the equipment, and ensures better protection.
Smart Images
Figure CN222577278U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ships, in particular to elastic vibration isolation equipment for a ship gear box. Background Art
[0002] In recent years, with the rapid development of technology, the military and civilian industries have an increasingly urgent need for vibration and noise control of high-power ship gearboxes, especially military ships, which have increasingly stringent control over the vibration and noise of mechanical equipment. The currently commonly used passive vibration isolation measures to reduce the excitation source have been difficult to meet the requirements, especially for equipment such as gearboxes. The ship gearbox is equipped with gears inside, and the position offset between the gears will directly lead to the transmission effect. For this reason, it is necessary to ensure the vibration isolation effect of the ship gearbox. When isolating the ship gearbox, rubber vibration isolation is usually used. Although this can save space and also have a vibration isolation effect, when a large vibration occurs, the ship gearbox will still vibrate inside, resulting in poor shock absorption and poor stability of the ship gearbox. There are certain limitations during use. For this reason, we propose an elastic vibration isolation device for ship gearboxes. Utility Model Content
[0003] The utility model provides an elastic vibration isolation device for a ship gear box, which solves the problems raised by the above-mentioned background technology.
[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: an elastic vibration isolation device for a ship gearbox, including a ship gearbox housing, a vibration isolation device is installed at the bottom of the ship gearbox housing, the vibration isolation device includes a fixed base, a rubber pad, a vibration isolation plate, and a transmission column, the top of the vibration isolation plate is fixed to the bottom of the ship gearbox housing, a rubber pad is fixed to the top of the fixed base, the top of the rubber pad is fixed to the bottom of the vibration isolation plate, a transmission column is fixed in the middle of the bottom of the vibration isolation plate, the bottom end of the transmission column extends into the interior of the fixed base and the transmission column is movably connected to the fixed base, and the interior of the fixed base is in a closed state.
[0005] Optionally, a vibration isolation spring is sleeved on the top end of the transmission column, the top end of the vibration isolation spring is fixed to the bottom end of the vibration isolation plate, and the bottom end of the vibration isolation spring is fixed to the top end of the fixed base.
[0006] Optionally, a movable valve plate is sleeved on the bottom end of the transmission column and the movable valve plate is movably connected to the transmission column. A through groove is opened on the transmission column, and the movable valve plate can close the through groove.
[0007] Optionally, a buffer cavity is provided at the bottom of the fixed base, and an air pressure cavity is provided at the bottom of the fixed base, the air pressure cavity is communicated with the buffer cavity, and a buffer plate is movably connected in the buffer cavity.
[0008] Optionally, a connecting cavity is provided on the side wall of the fixed base, a notch is provided at the bottom of the connecting cavity, the connecting cavity is connected to the air pressure cavity through the notch, and the top of the connecting cavity is connected to the top of the inside of the fixed base.
[0009] Optionally, the inner wall of the notch is movably connected with a plurality of connecting columns, a closing plate is fixed to the top end of the connecting column, and a bottom plate is fixed to the bottom end of the connecting column.
[0010] Optionally, a return spring is fixed to the top of the bottom plate, and the top end of the return spring is fixed to the inner wall of the slot.
[0011] The utility model has the following beneficial effects:
[0012] 1. The elastic vibration isolation device of the ship gear box can buffer and reduce the shock of the ship gear box body through the vibration isolation plate under the action of the elastic force of the vibration isolation spring and the air pressure generated when the transmission column moves, thereby buffering and reducing the shock of the ship gear box body, thereby making the shock absorption effect of the ship gear box body better, and then making its vibration isolation effect better, thereby better protecting the ship gear box body.
[0013] 2. The elastic vibration isolation device of the ship gearbox can be opened by opening the closing plate, so that when it produces strong vibration, the transmission column is directly pressed down, and part of the air can enter the connecting cavity through the notch, and then enter the upper part of the fixed base, avoiding the direct increase of air pressure. The relative effect has a greater impact on the transmission column, so that the vibration isolation effect is better. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;
[0016] Figure 3 Another cross-sectional structural schematic diagram of the utility model;
[0017] Figure 4 It is a schematic diagram of a partial cross-sectional structure of the utility model;
[0018] Figure 5 It is a schematic diagram of the structure of the connection of the utility model;
[0019] Figure 6 It is a schematic diagram of the structure of point A of the utility model.
[0020] In the figure: 1. Ship gearbox housing; 2. Fixed base; 3. Rubber pad; 4. Vibration isolation plate; 5. Transmission column; 6. Vibration isolation spring; 7. Movable valve plate; 8. Buffer chamber; 9. Air pressure chamber; 10. Buffer plate; 11. Connecting chamber; 12. Closing plate; 13. Connecting column; 14. Reset spring; 15. Bottom plate. DETAILED DESCRIPTION
[0021] 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 the embodiments. Based on the embodiments in 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.
[0022] See also Figures 1 to 4 An elastic vibration isolation device for a ship gearbox includes a ship gearbox housing 1. A vibration isolation device is installed at the bottom of the ship gearbox housing 1. The vibration isolation device includes a fixed base 2, a rubber pad 3, a vibration isolation plate 4, and a transmission column 5. The top of the vibration isolation plate 4 is fixed to the bottom of the ship gearbox housing 1. The ship gearbox housing 1 can be vibration isolated through the vibration isolation plate 4. A rubber pad 3 is fixed to the top of the fixed base 2. The top of the rubber pad 3 is fixed to the bottom of the vibration isolation plate 4. Under the action of the rubber pad 3, the vibration isolation plate 4 can be buffered and damped, thereby achieving a vibration isolation effect. A transmission column 5 is fixed in the middle of the bottom of the vibration isolation plate 4. The transmission column 5 can transmit the vibration on the ship gear box body 1. The bottom end of the transmission column 5 extends into the interior of the fixed base 2 and the transmission column 5 is movably connected to the fixed base 2. Under the limitation of the fixed base 2, the transmission column 5 can move along a fixed track. At the same time, the interior of the fixed base 2 is in a closed state. When the transmission column 5 moves, the air pressure in the upper and lower parts of the fixed base 2 can be changed, so that it can be buffered and shock-absorbed by the change of air pressure, so that its vibration isolation effect is better.
[0023] See also Figures 1 to 4 A vibration isolation spring 6 is sleeved on the top of the transmission column 5, the top of the vibration isolation spring 6 is fixed to the bottom of the vibration isolation plate 4, and the bottom end of the vibration isolation spring 6 is fixed to the top of the fixed base 2. Under the action of the elastic force of the vibration isolation spring 6, it can be buffered and shock-absorbed again, thereby making the vibration isolation effect better.
[0024] See also Figures 1 to 4The bottom end of the transmission column 5 is sleeved with a movable valve plate 7, and the movable valve plate 7 is movably connected to the transmission column 5. The movable valve plate 7 can move on the transmission column 5. A through groove is provided on the transmission column 5, and the movable valve plate 7 can close the through groove. When the transmission column 5 moves downward, the movable valve plate 7 can close the through groove under the action of air pressure. When the transmission column 5 moves upward, the movable valve plate 7 is relatively opened, so that part of the gas on the fixed base 2 slowly passes through the through groove, thereby making the shock absorption effect better.
[0025] See also Figures 1 to 4 A buffer chamber 8 is provided at the bottom of the fixed base 2, and an air pressure chamber 9 is provided at the bottom of the fixed base 2. The air pressure chamber 9 is communicated with the buffer chamber 8. A buffer plate 10 is movably connected in the buffer chamber 8. The buffer plate 10 can move in the buffer chamber 8, so that when the air pressure at the bottom of the fixed base 2 increases, the buffer plate 10 can move, and thus the space where the gas at the bottom of the fixed base 2 can extend can make its buffering effect better.
[0026] See also Figures 1 to 6 A connecting cavity 11 is provided on the side wall of the fixed base 2, and a notch is provided at the bottom of the connecting cavity 11. The connecting cavity 11 is connected to the air pressure cavity 9 through the notch, and the top of the connecting cavity 11 is connected to the top of the inside of the fixed base 2, so that when the air pressure at the bottom of the fixed base 2 suddenly increases, the gas at the bottom of the fixed base 2 can enter the upper part of the fixed base 2 through the connecting cavity 11, thereby avoiding the air pressure from causing a strong impact on the fixed base 2, thereby ensuring its buffering and shock absorption effect.
[0027] See also Figures 1 to 6 The inner wall of the slot is movably connected with a plurality of connecting columns 13. Under the limitation of the fixed base 2, the connecting columns 13 can move along a fixed track. A closing plate 12 is fixed to the top of the connecting column 13. The closing plate 12 can close the slot to prevent the gas on the upper part of the fixed base 2 from entering the lower part of the fixed base 2. A bottom plate 15 is fixed to the bottom end of the connecting column 13.
[0028] See also Figures 1 to 6 A return spring 14 is fixed to the top of the bottom plate 15, and the top of the return spring 14 is fixed to the inner wall of the slot. Under the action of the elastic force of the return spring 14, when the air pressure at the upper and lower parts of the fixed base 2 is balanced, the closing plate 12 can smoothly close the slot.
[0029] In summary, when the elastic vibration isolation device of the ship gearbox is used, when vibration occurs, the vibration generated on the ship gearbox housing 1 is transmitted to the vibration isolation plate 4, and driven by the vibration isolation plate 4, the transmission column 5 vibrates, and then the transmission column 5 can move relatively. When the transmission column 5 moves, it can buffer and damp the vibration isolation plate 4 under the action of the elastic force of the vibration isolation spring 6, and at this time, the rubber pad 3 is deformed, and under the elastic action of the rubber pad 3, the vibration isolation plate 4 can be damped again, and under the relative movement of the transmission column 5, the transmission column 5 can move downward. The movable valve plate 7 is pressed to move up relative to the transmission column 5 to close the through groove, and then under the joint action of the transmission column 5 and the movable valve plate 7, the air pressure in the air pressure chamber 9 becomes larger, pushing the buffer chamber 8 to move upward. At this time, under the action of the upper and lower air pressures of the fixed base 2, the vibration isolation plate 4 can be buffered and shock-absorbed, and when the air pressure in the air pressure chamber 9 becomes larger, the closing plate 12 is pushed upward to open the slot, so that a small amount of air enters the connecting chamber 11, and then enters the upper part of the fixed base 2, avoiding the direct occurrence of excessive air pressure in the upper and lower parts of the fixed base 2, thereby reducing its buffering and shock-absorption effect.
[0030] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An elastic vibration isolation device for a ship gearbox, comprising a ship gearbox housing (1), a vibration isolation device being installed at the bottom of the ship gearbox housing (1), characterized in that: The vibration isolation device comprises a fixed base (2), a rubber pad (3), a vibration isolation plate (4), and a transmission column (5); the top of the vibration isolation plate (4) is fixed to the bottom of a ship gear box body (1); the top of the fixed base (2) is fixed with a rubber pad (3); the top of the rubber pad (3) is fixed to the bottom of the vibration isolation plate (4); the middle of the bottom of the vibration isolation plate (4) is fixed with a transmission column (5); the bottom end of the transmission column (5) extends into the interior of the fixed base (2) and the transmission column (5) is movably connected to the fixed base (2); and the interior of the fixed base (2) is in a closed state.
2. The elastic vibration isolation device for a ship gearbox according to claim 1, characterized in that: The top end of the transmission column (5) is sleeved with a vibration isolation spring (6), the top end of the vibration isolation spring (6) is fixed to the bottom of the vibration isolation plate (4), and the bottom end of the vibration isolation spring (6) is fixed to the top of the fixed base (2).
3. The elastic vibration isolation device for a ship gearbox according to claim 2, characterized in that: The bottom end of the transmission column (5) is sleeved with a movable valve plate (7), and the movable valve plate (7) is movably connected to the transmission column (5). A through groove is provided on the transmission column (5), and the movable valve plate (7) can close the through groove.
4. The elastic vibration isolation device for a ship gearbox according to claim 3, characterized in that: A buffer chamber (8) is provided at the bottom of the fixed base (2), and an air pressure chamber (9) is provided at the bottom of the fixed base (2); the air pressure chamber (9) is connected to the buffer chamber (8), and a buffer plate (10) is movably connected in the buffer chamber (8).
5. The elastic vibration isolation device for a ship gearbox according to claim 4, characterized in that: A connecting cavity (11) is provided on the side wall of the fixed base (2), and a notch is provided at the bottom of the connecting cavity (11). The connecting cavity (11) is connected to the air pressure cavity (9) through the notch, and the top of the connecting cavity (11) is connected to the top of the interior of the fixed base (2).
6. The elastic vibration isolation device for a ship gearbox according to claim 5, characterized in that: The inner wall of the notch is movably connected with a plurality of connecting columns (13), the top ends of the connecting columns (13) are fixed with a closing plate (12), and the bottom ends of the connecting columns (13) are fixed with a bottom plate (15).
7. The elastic vibration isolation device for a ship gearbox according to claim 6, characterized in that: A return spring (14) is fixed on the top of the bottom plate (15), and the top end of the return spring (14) is fixed to the inner wall of the notch.