CN213270842U

CN213270842U - Vibration isolation device for connecting mechanical equipment and bulkhead

Info

Publication number: CN213270842U
Application number: CN202021574304.6U
Authority: CN
Inventors: 孙小童; 刘佳; 杜飞; 李安义
Original assignee: State Owned Anqing Haiyan Machinery Factory
Current assignee: State Owned Anqing Haiyan Machinery Factory
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-05-25
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a vibration isolation device for connecting mechanical equipment and a bulkhead, which comprises a shell, a movable shaft and a plurality of air springs, wherein one end of the shell is connected with the bulkhead or other foundations, the other end of the shell is open, and an end cover is arranged at the open end; the air springs are coaxially arranged inside the shell at intervals, the movable shaft sequentially penetrates through the inner rings of the air springs, one end or two ends of the movable shaft vertically extend out of the end covers, and the end of the movable shaft extending out of the shell is connected with mechanical equipment. The utility model has the advantages that: the utility model discloses utilize the mode of air spring and rubber structure combination, can realize multi freedom vibration isolation and spacing, support on the one hand and fixed equipment or vibration isolation device during the lateral wall installation, the vibration that on the other hand attenuation equipment produced to play the guard action to the impact.

Description

Vibration isolation device for connecting mechanical equipment and bulkhead

Technical Field

The utility model relates to a boats and ships vibration isolation technical field, concretely relates to vibration isolation device who connects mechanical equipment and bulkhead.

Background

Various mechanical devices are one of the main noise sources of a ship, and if vibration of the mechanical devices is not effectively isolated, the vibration of the mechanical devices is transmitted to a bulkhead to cause sound radiation, so that the sound stealth performance of the mechanical devices is influenced. However, the existing vibration isolator is inconvenient to mount in a side hanging manner, is easy to generate tensile and compressive stress, and has poor vibration isolation effect. In order to meet the requirement of side-hung installation of vibration-isolated equipment, a vibration-isolating device with uniform and consistent rigidity in the circumferential direction is specially developed.

Disclosure of Invention

An object of the utility model is to provide a vibration isolation device of connection mechanical equipment and bulkhead that vibration isolation is effectual and easily install when side-hung installation to prior art's not enough.

The utility model adopts the technical proposal that: a vibration isolation device for connecting mechanical equipment and a bulkhead comprises a shell, a movable shaft and a plurality of air springs, wherein one end of the shell is connected with the bulkhead or other foundations, the other end of the shell is open, and an end cover is arranged at the open end; the air springs are coaxially arranged inside the shell at intervals, the movable shaft sequentially penetrates through the inner rings of the air springs, one end or two ends of the movable shaft vertically extend out of the end covers, and the end of the movable shaft extending out of the shell is connected with mechanical equipment.

According to the scheme, two adjacent air springs are separated by the spacer, and the spacer is arranged on the outer wall of the movable shaft.

According to the scheme, the isolation pad is of a hollow structure and is made of rubber materials.

According to the scheme, one end of the movable shaft, which is positioned in the shell, is sleeved with the rubber sleeve.

According to the scheme, the end cover is in threaded connection with the shell.

According to the scheme, a smooth sheet is arranged between the air spring at the opening end of the shell and the end cover.

According to the scheme, the non-opening end of the shell is provided with the bottom plate, and the bottom plate is in threaded connection with mechanical equipment through a plurality of bolts.

The utility model has the advantages that:

1. the utility model discloses utilize the mode of air spring and rubber structure combination, can realize multi freedom vibration isolation and spacing, support and the fixed equipment on the one hand when the side is hung the installation, on the other hand the vibration that the damping device produced reduces the equipment and produces the intensity that the vibration transmits to the bulkhead to reduce the radiation underwater sound of boats and ships;

2. the rubber sleeve is wrapped at the tail end of the movable shaft, so that the rigid collision with the shell can be prevented when the amplitude is large, and the abrasion of the air spring caused by the severe friction generated by the air spring and the movable shaft in the vibration process can be avoided; the thin sheet can prevent the air spring from being directly contacted with the inner wall of the end cover, so that the abrasion is increased, and the service life of the air spring is reduced;

3. the utility model can realize larger bearing capacity and lower vibration isolation frequency with relatively smaller size space and weight, thereby obtaining better vibration isolation effect;

4. the utility model discloses the bearing capacity is big, rigidity is low, light in weight, and is with low costs, and the feasibility is good, and stability is high.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Wherein: 1. a housing; 2. a movable shaft; 3. an air spring; 4. a base plate; 5. an end cap; 6. a spacer; 7. a sheet; 8. a rubber sleeve.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

The vibration isolation device for connecting mechanical equipment and a bulkhead comprises a shell 1, a movable shaft 2 and a plurality of air springs 3, wherein a bottom plate 4 is arranged at one end of the shell 1, the bottom plate 4 is connected with the bulkhead or other foundations through a plurality of bolts, the other end of the shell 1 is open, and an end cover 5 is arranged at the open end; the air springs 3 are coaxially arranged inside the shell 1 at intervals, the movable shaft 2 sequentially penetrates through inner rings of the air springs 3, one end or two ends of the movable shaft 2 vertically extend out of the end cover 5, and the end of the movable shaft 2 extending out of the shell 1 is connected with external loads such as mechanical equipment. In this embodiment, the movable shaft 2 is connected to a mechanical device by a screw thread.

Preferably, two adjacent air springs 3 are separated by a spacer 6, and the spacer 6 is installed on the outer wall of the movable shaft 2.

Preferably, the spacer 6 is a hollow structure and made of rubber material.

Preferably, one end of the movable shaft 2 in the housing 1 is sleeved with a rubber sleeve 8.

Preferably, the end cap 5 is screwed to the housing 1. In order to avoid the difficulty in screwing the upper shell 1 and the lower shell 1 caused by the excessive friction force of the air spring 3, a sheet 7 (a metal or nonmetal sheet 7) with a smooth surface is arranged between the air spring 3 and the end cover 5 at the opening end of the shell 1 so as to reduce the friction resistance in the screwing process. In this embodiment, after the end cap 5 is screwed tightly with the housing 1, a set screw is added as an auxiliary anti-loosening measure.

The utility model discloses in, casing 1 is cylindrical structure, and its one end is equipped with square bottom plate 4, and the bolt hole has been seted up respectively in the four corners of bottom plate 4 for link to each other with bulkhead or other basis. The movable shaft 2 is fixedly connected with an external load through a threaded structure with a specified specification.

It should be noted that the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced with equivalents, but any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The vibration isolation device for connecting mechanical equipment and a bulkhead is characterized by comprising a shell, a movable shaft and a plurality of air springs, wherein one end of the shell is connected with the bulkhead, the other end of the shell is provided with an opening, and an end cover is arranged at the opening end; the air springs are coaxially arranged inside the shell at intervals, the movable shaft sequentially penetrates through the inner rings of the air springs, one end or two ends of the movable shaft vertically extend out of the end covers, and the end of the movable shaft extending out of the shell is connected with mechanical equipment.

2. The vibration isolation apparatus for coupling mechanical equipment to a bulkhead of claim 1, wherein adjacent two of the air springs are separated by a spacer mounted to an outer wall of the movable shaft.

3. The vibration isolation apparatus for coupling mechanical equipment to a bulkhead of claim 2 wherein said spacer is a hollow structure and is made of a rubber material.

4. The vibration isolation apparatus for coupling mechanical equipment to a bulkhead of claim 1 wherein an end of said movable shaft within said housing is covered with a rubber boot.

5. The vibration isolation apparatus coupling mechanical equipment and a bulkhead of claim 1, wherein the end cap is threadably coupled to the housing.

6. The vibration isolation apparatus for coupling mechanical equipment to a bulkhead of claim 1 wherein a smooth foil is disposed between the air spring at the open end of the housing and the end cap.

7. The vibration isolation apparatus for coupling mechanical equipment to a bulkhead of claim 1, wherein the non-open end of the housing is provided with a bottom plate, and the bottom plate is threadedly coupled to the mechanical equipment by a plurality of bolts.