CN207328801U

CN207328801U - A kind of intermediate bearing automatic centring device

Info

Publication number: CN207328801U
Application number: CN201721030884.0U
Authority: CN
Inventors: 王刚伟; 田佳彬; 王隽; 疏舒; 张金国
Original assignee: 719th Research Institute of CSIC
Current assignee: 719th Research Institute of CSIC
Priority date: 2017-08-16
Filing date: 2017-08-16
Publication date: 2018-05-08
Anticipated expiration: 2027-08-16

Abstract

The utility model discloses a kind of intermediate bearing automatic centring device, the device includes external bushing, outer rubber layer, interstage bushing, inner rubber layer and neck bush, wherein external bushing, interstage bushing and neck bush are metalwork, three is the relation being set with successively from outside to inside, outer rubber layer vulcanizes between external bushing and interstage bushing, and inner rubber layer vulcanizes between interstage bushing and neck bush；Centralising device is fixed in pedestal entirely through external bushing, the under-chassis of intermediate bearing is fixedly mounted in neck bush, enable intermediate bearing with main shaft adjust automatically posture using the elastic deformation of inner rubber layer and outer rubber layer, and then improve the Shaft alignment state of shafting, while shafting can be effectively isolated and pass through vibration transmission of the pedestal to hull.

Description

A kind of intermediate bearing automatic centring device

Technical field

The utility model is applied to intermediate bearing in ship cabin, can improve the running centering shape of shafting by its application State, eliminate operation in due to hull deformation, impact, operating status change etc. shafting alignment state deteriorating caused by various factors, It can effectively isolate the vibration transmission that shafting is transmitted to hull by bearing base at the same time.

Background technology

At present, intermediate bearing is fixed on architecture basics by reamer bolt in marine shafting cabin, and this mounting means is deposited In problems with：

A) change such as the deformation of hull, useful load, operating condition causes actual marine shafting Shaft alignment state to change, bearing Shaft alignment state deteriorates, and causes bearing local load overrate, and then cause burn-out of bearing accident.

B) vibration of the actual motion center shafting under various excitations is transmitted to hull by the pedestal rigidly installed.

C) building berth stage bearing under-chassis and pedestal are using reamer bolt hole and the mounting means of reamer bolt, construction period Length, installation accuracy are low, meanwhile, need reamer bolt again and bolt hole in later stage repairing.

Utility model content

In view of this, the utility model provides a kind of intermediate bearing self-aligning device, can improve marine shafting operation When intermediate bearing Shaft alignment state, while shafting can be effectively isolated and pass through vibration transmission of the pedestal to hull.

A kind of intermediate bearing automatic centring device, the device include external bushing, outer rubber layer, interstage bushing, inner rubber layer And neck bush, wherein external bushing, interstage bushing and neck bush is metalwork, and three is from outside to inside the relation being set with successively, Outer rubber layer vulcanizes between external bushing and interstage bushing, and inner rubber layer vulcanizes between interstage bushing and neck bush；Centering fills Put and be fixed on entirely through external bushing in pedestal, the under-chassis of intermediate bearing is fixedly mounted in neck bush, utilizes interior rubber The elastic deformation of layer and outer rubber layer enables intermediate bearing with main shaft adjust automatically posture, and then improves the centering of shafting State.

Further, the two valve arc blocks that the interstage bushing is set by left and right form discrete bushing, neck bush and External bushing top and bottom corresponding with the discontinuous part of interstage bushing form the hollow structure of part, and hollow structure constitutes pair The integral stiffness and isolation characteristics of middle device, can improve the compatible deformation of two layers of rubber layer.

Further, the centralising device uses upper and lower split type structure so that device is convenient for disassembly and assembly, is applicable to various The application of different occasions.

Further, the thickness parameter of the inner rubber layer and outer rubber layer can be set according to exciting force frequency spectrum progress specific aim Meter, for isolating the vibration of specific frequency line spectrum or certain frequency scope.

Beneficial effect：

1st, the utility model make use of the elasticity of elastomeric material so that intermediate bearing can be according to the change of shafting alignment state Change the posture of self-adjustable bearing, and then improve the Shaft alignment state of shafting.

2nd, the utility model reduces the requirement on machining accuracy of bearing under-chassis and eliminates reamer bolt at the same time, reduces construction Difficulty, shorten construction period.

3rd, the utility model utilizes the impedance operator of two kinds of different materials of metal and rubber, can substantially isolate shafting vibration Transmission to hull structure, reduces the vibration of hull, reduces the radiated noise of hull.

Brief description of the drawings

Fig. 1 is the structure composition schematic diagram of the utility model.

Fig. 2 is the schematic three dimensional views of the utility model.

Fig. 3 is the structure diagram of the utility model application.

Fig. 4 is the B direction views of Fig. 3.

In figure：1- neck bush, 2- inner rubber layers, 3- external bushings, 4- interstage bushings, 5- outer rubber layers, 6- main shafts, 7- bearings Under-chassis, 8- centralising devices, 9- bottom bases, 10- top bases, 11- bolts, 12- intermediate bearings.

Embodiment

With reference to the accompanying drawings and examples, the utility model is described in detail.

As shown in figure 1 and 2, the utility model provides a kind of intermediate bearing automatic centring device, which includes interior Bushing 1, external bushing 3, inner rubber layer 2, interstage bushing 4 and outer rubber layer 5；

Neck bush 1, external bushing 3 and interstage bushing 4 are metal material, and neck bush 1 and external bushing 3 are complete annulus, Interstage bushing is the identical arc-shaped flaky structure of two valve sizes, and outer rubber layer 5 vulcanizes between external bushing 3 and interstage bushing 4, interior Rubber layer 2 vulcanizes between neck bush 1 and interstage bushing 4；Neck bush 1 and external bushing 3 are corresponding with 4 discontinuous part of interstage bushing Top and bottom formed part hollow structure.For the ease of assembling and setting, centralising device 8 uses upper and lower split type structure, This structure type is applicable to the application of various different occasions.

As shown in figures 3 and 4, the intermediate bearing 12 in figure is for main shaft 6 to 8 applicable cases of centralising device of the utility model Support is provided, bearing under-chassis 7 provides support for intermediate bearing 12, and one, which shares four centralising devices 8, is installed on 7 He of bearing under-chassis The alignment function of intermediate bearing is realized between pedestal, wherein, pedestal is made of top base 10 and bottom base 9.

Centralising device 8 is installed between bottom base 9 and top base 10 by external bushing 3, and bottom base 9 and top base 10 pass through 4 bolts 11 are fastened and clamp external bushing 3, and bearing under-chassis 7 is installed on the inside of neck bush 1, and 1 internal diameter size of neck bush omits Less than 7 outer diameter of bearing under-chassis, neck bush 1 is necessarily deformed so that 1 inner surface of bushing and under-chassis 7 in radially rear produce loaded Outer surface is bonded completely.When various factors causes the change of 6 Shaft alignment state of main shaft in vessel motion, centralising device 8 utilizes interior rubber The elasticity of layer 2 and outer rubber layer 5 enables intermediate bearing 12 with 6 adjust automatically posture of main shaft, and then improves pair of shafting Middle state；In addition, the outer rubber layer 5 and inner rubber layer 2 of centralising device 8 can be effectively isolated vibration transmission of the shafting to pedestal, can Effectively to lower the vibration of hull, hull acoustic radiation noise is reduced.

In conclusion the above is only the preferred embodiments of the present utility model only, the utility model is not intended to limit Protection domain.Where within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on, should all wrap It is contained within the scope of protection of the utility model.

Claims

A kind of 1. intermediate bearing automatic centring device, it is characterised in that the device include external bushing, outer rubber layer, interstage bushing, Inner rubber layer and neck bush, wherein external bushing, interstage bushing and neck bush are metalwork, and three is to be set with successively from outside to inside Relation, outer rubber layer vulcanize between external bushing and interstage bushing, inner rubber layer vulcanize between interstage bushing and neck bush； Centralising device is fixed in pedestal entirely through external bushing, and the under-chassis of intermediate bearing is fixedly mounted in neck bush, is utilized The elastic deformation of inner rubber layer and outer rubber layer enables intermediate bearing with main shaft adjust automatically posture, and then improves shafting Shaft alignment state.
2. intermediate bearing automatic centring device as claimed in claim 1, it is characterised in that the interstage bushing is set by left and right Two valve arc blocks form discrete bushing, neck bush and external bushing top corresponding with the discontinuous part of interstage bushing and bottom Portion forms local hollow structure.
3. intermediate bearing automatic centring device as claimed in claim 2, it is characterised in that the centralising device is used and cutd open up and down Fraction structure.
4. intermediate bearing automatic centring device as claimed in claim 3, it is characterised in that the inner rubber layer and outer rubber layer Thickness parameter targeted design is carried out according to exciting force frequency spectrum, for isolating shaking for specific frequency line spectrum or certain frequency scope It is dynamic.