Vibration isolator for underwater small driving device

Abstract

The utility model discloses a vibration isolator for an underwater small driving device. The vibration isolator comprises a bolt, a gasket, an annular metal piece, a cylindrical metal piece and annular vulcanized rubber. The cylindrical metal parts are distributed in the mounting surface of the annular metal part in a staggered manner, a certain fall is formed between the cylindrical metal parts and the mounting plane of the annular metal part, and the annular vulcanized rubber is coated on the surfaces of the annular metal part and the cylindrical metal parts; according to the two-degree-of-freedom vibration isolation driving device, an annular structure is adopted, two-degree-of-freedom vibration isolation of the driving device is achieved, the structure of the vibration isolation device is compact, and the installation space of the small-sized driving device can be saved; the vibration isolation design of the driving device has good vibration and noise reduction functions, and dynamic coupling of the motor and an isolated object is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to underwater ship vibration isolation and noise reduction field, concretely relates to a vibration isolator suitable for underwater small driving device. BACKGROUND

[0002] With the development of the ocean field, the demand of underwater ship is increasing, and its vibration noise seriously affects the equipment performance and stability. In the underwater driving device, the main vibration source comes from the mechanical vibration caused by motor rotation and power device thrust, therefore how to reduce the dynamic coupling generated during the operation of the motor and system becomes a problem to be solved. The vibration isolator is a simple and effective method to solve the vibration noise.

[0003] With the development of underwater ship to deeper and quieter direction, it requires the vibration isolator to withstand the high hydrostatic pressure in deep water area, and at the same time keep stable performance. The space of underwater equipment is usually limited, which requires the structure of the vibration isolator to be compact, and the inherent frequency to be as low as possible. The commonly used vibration isolator cannot achieve good vibration isolation effect in limited installation space. Therefore, we propose a new type of vibration isolator suitable for underwater small driving device. SUMMARY

[0004] The utility model discloses a new type of vibration isolator for underwater small driving device, to solve the problem of underwater vibration isolator in the background art that cannot achieve good vibration isolation effect in limited installation space.

[0005] Technical scheme: a vibration isolator for underwater small driving device, comprising cylindrical metal parts, ring metal parts, vulcanized rubber, bolts, gaskets. The plurality of cylindrical metal parts are distributed in the ring metal parts, and the vulcanized rubber is coated on the surface of the cylindrical metal parts and the ring metal parts, and the two are connected into one. The cylindrical metal parts are provided with threads, and are connected with the vibration isolation device through bolts and gaskets. The ring metal parts are provided with threads, and are connected with the driving device motor through bolts and gaskets.

[0006] Further description of the above technical scheme:

[0007] The ring metal parts have a plurality of cylindrical protrusions, which are connected with the ring structure in a curved transition. A plurality of U-shaped grooves are arranged in the protruding structure, which are connected with the ring structure in a curved transition. The upper surface of the cylindrical protrusion is the mounting surface, which is provided with a threaded hole.

[0008] Further description of the above technical scheme:

[0009] The number of cylindrical protrusion structure on the ring metal parts is 4, and the number of U-shaped grooves is 4.

[0010] As a further description of the above technical solutions:

[0011] The groove of the cylindrical metal piece and the annular metal piece are on the same central axis.

[0012] As a further description of the above technical solutions:

[0013] The upper surface of the cylindrical metal piece is a mounting surface, which is provided with a through threaded hole.

[0014] As a further description of the above technical solutions:

[0015] The cylindrical metal piece and the annular metal piece are vulcanized and bonded with the vulcanized rubber except the mounting surfaces.

[0016] As a further description of the above technical solutions:

[0017] The vulcanized rubber is vulcanized by neoprene.

[0018] Beneficial effects: The annular metal rubber vibration isolator in the utility model has simple structure, small size and simple installation. The cylindrical protruding mounting surface of the annular metal piece and the cylindrical metal piece mounting surface can be designed according to specific conditions, and can be suitable for various types of motors. The vulcanized rubber has the function of slowing down vibration, and the annular rubber structure makes the vibration isolator block the transmission of the motor central shaft torsional vibration to the power device, and also blocks the axial thrust of the power device to the motor, thereby reducing the structural noise and self-noise of the underwater driving device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a schematic diagram of the three-dimensional structure of the vibration isolator as a whole;

[0020] Fig. 2 is a schematic diagram of the cross section of the three-dimensional structure of the vibration isolator;

[0021] Fig. 3 is a schematic diagram of the overhead structure of the metal piece of the vibration isolator;

[0022] Fig. 4 is a schematic diagram of the side structure of the metal piece of the vibration isolator

[0023] In the figure, 1 is a cylindrical metal piece, 2 is vulcanized rubber, 3 is an annular metal piece, 4 is a first bolt, 6 is a second bolt, 5 is a first gasket, and 7 is a second gasket. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0027] A kind of for underwater small drive device vibration isolator, as shown in Figs. 1 to 4 It includes: cylindrical metal piece 1, annular metal piece 3, vulcanized rubber 2, first bolt 4, second bolt 6, first gasket 5, second gasket 7. Multiple cylindrical metal pieces are distributed in annular metal piece 3 around. The vulcanized rubber 2 is wrapped on the surface of the cylindrical metal piece 1 and the annular metal piece, and is integrated with the two. The vulcanized rubber 2 can withstand torque and thrust at the same time, so that the vibration isolator can withstand the torque of large motor rotation and the thrust generated by the power device. And its inherent frequency is below 350HZ, which ensures good vibration isolation effect. Thread is provided on the cylindrical metal piece 1, and is connected with the vibration isolation device through bolt 4 and gasket 5. Thread is provided on the annular metal piece 3, and is connected with the drive device motor through bolt 6 and gasket 7. Under the premise of ensuring good vibration isolation effect, the structure is compact, and the installation height is only 16mm. The problem of small installation space of underwater drive device is solved.

[0028] In the embodiment, the annular metal piece 3 has a plurality of columnar protrusions, which are connected to the annular structure with curved transition. A plurality of U-shaped grooves are arranged in the middle of the protrusion structure, which are connected to the annular structure with curved transition. The upper surface of the columnar protrusion is a mounting surface, which is provided with a threaded hole.

[0029] In the embodiment, the annular metal piece 3 has four columnar protrusion structures and four U-shaped grooves.

[0030] In the embodiment, the columnar metal piece 1 and the groove of the annular metal piece 3 are on the same central axis. The center of the columnar metal piece 1 and the center of the columnar protrusion structure of the annular metal piece are not on the same level. The columnar metal piece 1 is connected to the power device, and the protrusion structure of the annular metal piece is provided with vulcanized rubber at the bottom, which can prevent vibration propagation and noise generation under the working conditions of roll and pitch.

[0031] In the embodiment, the upper surface of the columnar metal piece 1 is a mounting surface, which is provided with a through threaded hole.

[0032] In the embodiment, the columnar metal piece 1 and the annular metal piece 3 are vulcanized and bonded with the vulcanized rubber 2 except the mounting surface.

[0033] In the embodiment, the vulcanized rubber 2 is vulcanized by using neoprene rubber. It can prevent corrosion and penetration under the working condition of high-pressure seawater, and still maintain good vibration isolation performance.

[0034] Although the embodiments of the utility model have been shown and described (see the above detailed description), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A vibration isolator for a small underwater drive unit, characterized by The application relates to a vibration isolation device, which comprises a cylindrical metal piece (1), a ring-shaped metal piece (3), vulcanized rubber (2), a first bolt (4), a second bolt (6), a first gasket (5) and a second gasket (7). The cylindrical metal piece (1) is provided in plurality, and the plurality of cylindrical metal pieces (1) are distributed around the ring-shaped metal piece (3) in a staggered manner. The vulcanized rubber (2) is coated on the surfaces of the cylindrical metal piece (1) and the ring-shaped metal piece, and the two are integrated. The cylindrical metal piece (1) is provided with threads, and is connected with the vibration isolation device through the first bolt (4) and the first gasket (5). The ring-shaped metal piece (3) is provided with threads, and is connected with the motor of the driving device through the second bolt (6) and the second gasket (7).

2. The vibration isolator for a small underwater drive device according to claim 1, characterized by The ring-shaped metal piece (3) is provided with a plurality of cylindrical protrusions, which are connected with the ring-shaped structure in a curved transition mode, and a plurality of U-shaped grooves are arranged in the protrusion structure and connected with the ring-shaped structure in a curved transition mode. The upper surface of the cylindrical protrusion is a mounting surface, which is provided with a threaded hole.

3. The vibration isolator for a small underwater drive device according to claim 2, characterized by The number of the cylindrical protrusion structures of the ring-shaped metal piece (3) is four, and the number of the U-shaped grooves is four.

4. The vibration isolator for a small underwater drive device according to claim 1, characterized by The groove of the cylindrical metal piece (1) and the ring-shaped metal piece (3) is located on the same central axis. The center of the cylindrical metal piece (1) and the center of the cylindrical protrusion structure of the ring-shaped metal piece are not located on the same level.

5. The vibration isolator for a small underwater drive device according to claim 1, wherein The upper surface of the cylindrical metal piece (1) is a mounting surface, which is provided with a through threaded hole.

6. The vibration isolator for a small underwater drive device according to claim 1, wherein The mounting surfaces of the cylindrical metal piece (1) and the ring-shaped metal piece (3) are vulcanized and bonded with the vulcanized rubber (2).

7. The vibration isolator for a small underwater drive device according to claim 6, wherein The vulcanized rubber (2) is vulcanized by using neoprene.

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