CN1023949C

CN1023949C - Trailing axle and tube for rolling bearing

Info

Publication number: CN1023949C
Application number: CN 91102802
Authority: CN
Inventors: 钱怀风; 黄铮
Original assignee: COMMUNICATIONS SCIENTIFIC RESEARCH INST JIANGXI PROV
Current assignee: COMMUNICATIONS SCIENTIFIC RESEARCH INST JIANGXI PROV
Priority date: 1991-04-23
Filing date: 1991-04-23
Publication date: 1994-03-09
Anticipated expiration: 2006-04-23
Also published as: CN1055985A

Abstract

The present invention relates to a tail shaft and tail tube device of a flow bearing used for supporting a propeller shaft in an automotive ship, which is mainly composed of a tail shaft, a tail tube, a front bearing, a back bearing, a sealing device, etc. The device is based on an original tail shaft and tail tube device of a rolling bearing, and the bearing is directly installed in a bearing seat and is tightly pressed through a front bearing positioning sleeve and a back bearing positioning sleeve; an internal sleeve in which a square through slot is axially processed is arranged in an inner bearing ring, and a scotch pin capable of sliding along the through slot is arranged on the tail shaft. The device has the advantages of little friction resistance, high transmission efficiency, stable operation, no abrasion of the bearing seat and tail shaft, long service life of sealing elements, easy component processing, convenient assembly and disassembly, etc.

Description

Trailing axle and tube for rolling bearing

The present invention relates to a kind of trailing axle and tube for rolling bearing that is used for power vessels supporting propeller shaft.

In power vessels, axle system is used for the power of diesel engine is passed to propeller, again the thrust that propeller produced is passed to hull simultaneously.Tail pipe then is to be used for supporting propeller shaft, and makes its pass-out outboard reliably, and the water that prevents outboard bleeds in the ship in a large number and avoids lubricant oil to leak.

Present most of power vessels adopts the sliding bearing trailing axle and tube, and this device has that frictional resistance is big, and transmission efficiency is low, and tailing axle is shortcoming such as wearing and tearing easily.In recent years, trailing axle and tube for rolling bearing comes out, this device of (see figure 3) has overcome the existing defective of sliding bearing trailing axle and tube, and it is little to have surface friction drag, the transmission efficiency height, tailing axle is not easy to wear, running steadily, vibrate little, the standardization level height, versatility, interchangeability are good, advantage such as make and repair cost is low.

But, during its axis will carry out when marine shafting was installed, concerning inland navigation craft, bring influence in order to prevent the deformation of hull to centering of shafting, generally carry out centering of shafting after ship launching, after the ship launching, trailing axle and tube all under water, rolling bearing also is fixed on the tailing axle by locking nut 26 and tightly fixed liner 28, and the relative tailing axle of rolling bearing can not produce and move axially.And according to the custom of centering of shafting, often need and to move behind the tailing axle, make tailing axle shaft coupling and jack shaft shaft coupling that certain clearance be arranged, after in the axis school, with bolt two flanges are drawn over to one's side again, so have to select bigger Spielpassung between its bearing outer ring and the bearing housing inner ring, like this, axle ties up in the operation process, will produce relative rotation between bearing outer ring and the bearing housing, time one is long, because the bearing housing wearing and tearing, the gap increases, will produce vibration and impact, cause that thereupon seal ring damages, a series of faults such as leakage of oil and damage of bearings have increased the number of times that boats and ships are suspended and repaired.Because bearing support connects and is welded on the hull, can't change after the wearing and tearing in addition, thus between bearing and bearing support, must increase the bearing housing that can change 29, thereby increased the tail pipe diameter, reduced the efficient of propeller.Had trailing axle and tube for rolling bearing and also had a defective to be, rolling bearing is positioned at bearing housing inside, makes locking nut 26, packing ring 27 install and remove inconvenient.

The objective of the invention is to overcome the existing defective of above-mentioned trailing axle and tube for rolling bearing, provide a kind of bearing support and tailing axle can not produce wearing and tearing, need not repair, the life-span of Sealing is long, simple in structure, the component easy processing, mounting or dismounting are convenient, when centering of shafting, tailing axle can axially movable trailing axle and tube for rolling bearing.

Task of the present invention is finished in the following manner, promptly on the basis of original trailing axle and tube for rolling bearing, replaces original bearing housing 29 with setting sleeve before and after the bearing, replaces original tightly fixed liner and locking nut with interior cover and standstill locking pin.Specifically, tailing axle is equipped with the Rear oil seal lining from the rear end to front end, pressing plate, rubber ring, rear pressing cover, the J-shaped oil sealing, the Rear oil seal ring support, spacer ring, rear bearing block, the biserial radial roller bearing, flange, tail pipe, backing plate, front-end bearing pedestal, the Front oil seal ring support, preceding gland, Front oil seal lining and clamping ring, bearing is directly installed in the bearing support, the endoporus of bearing outer ring and bearing support adopts transition fit, and before passing through, the rear bearing setting sleeve compresses, bearing inner race is equipped with interior cover, interior cover adopts interference fit with bearing inner race, in interior cover, be processed with a square three-way groove vertically, being equipped with on the tailing axle can be along the standstill locking pin of square three-way groove slip, and tailing axle and interior cover adopt Spielpassung.

The present invention is little except having frictional resistance, the transmission efficiency height, running is steadily vibrated little, outside the advantage such as versatility, interchangeability are good, also have bearing support and tailing axle and can not produce wearing and tearing, need not repair, seal durability is long, simple in structure, the component easy processing, mounting or dismounting are convenient, are convenient to advantages such as centering of shafting.

Concrete structure of the present invention is provided by drawings and Examples.

Fig. 1 is a longitudinal sectional view of the present invention;

Fig. 2 is the view in A-A cross section among Fig. 1;

Fig. 3 is the local longitudinal sectional view of original trailing axle and tube for rolling bearing.

Below in conjunction with drawings and Examples the present invention is described in more detail.

Embodiment:

With reference to Fig. 1, Fig. 2, Rear oil seal lining 1 is equipped with in the rear end of tailing axle 23, pressing plate 2, rubber ring 3, rear pressing cover 4 and Rear oil seal ring support 6, four J-shaped rubber oil seas 5 and spacer ring 7 are housed in the Rear oil seal ring support 6, to prevent that lubricant oil from leaking and river immerses, biserial radial roller bearing 10 is directly installed in the bearing support 8, the endoporus of bearing 10 outer rings and bearing support 8 adopts transition fit, by setting sleeve behind the rear bearing 9, rear bearing prelocalization cover 13 compresses, cover 12 in the inner ring of bearing 10 is equipped with by interference fit, be processed with a square three-way groove 25 vertically in the interior cover 12, being equipped with on the tailing axle 23 can be along the standstill locking pin 11 of square three-way groove 25 slips, tailing axle 23 adopts Spielpassung with interior cover 12, promptly when carrying out centering of shafting, tailing axle 23 can move in interior cover 12 vertically, but relatively rotates with interior cover 12 nothings.The rear end of tailing axle 23 is connected by tail pipe 14 with front end, dress flange 24 on the tail pipe 14, the front end of tailing axle 23 is equipped with front-end bearing pedestal 17, backing plate 15, Front oil seal ring support 19, preceding gland 20, Front oil seal lining 21 and clamping ring 22, two J-shaped rubber oil seas 5 are housed, in case lubricant oil leaks in the Front oil seal ring support 19.Identical with the tailing axle rear end, the interior cover 12 that axial square three-way groove 25 has been housed out in the inner ring of setting sleeve 16 behind biserial radial roller bearing 10, the fore bearing, fore bearing prelocalization cover 18, bearing 10 is housed in the front-end bearing pedestal 17, the standstill locking pin 11 that can slide along square three-way groove 25 is housed on the tailing axle 23.

Claims

1, a kind of trailing axle and tube for rolling bearing that is used for power vessels supporting propeller shaft, from the rear end to front end Rear oil seal lining 1 is housed on the tailing axle 23, pressing plate 2, rubber ring 3, rear pressing cover 4, J-shaped oil sealing 5, Rear oil seal ring support 6, spacer ring 7, rear bearing block 8, biserial radial roller bearing 10, flange 24, tail pipe 14, backing plate 15, front-end bearing pedestal 17, Front oil seal ring support 19, preceding gland 20, Front oil seal lining 21 and clamping ring 22, it is characterized in that: bearing 10 is directly installed in the bearing support 8, the endoporus of bearing 10 cylindricals and bearing support 8 adopts transition fit, and by setting sleeve 9 behind the rear bearing, rear bearing prelocalization cover 13, setting sleeve 16 behind the fore bearing, fore bearing prelocalization cover 18 compresses, cover 12 in bearing 10 inner rings are equipped with, interior cover 12 adopts interference fit with bearing inner race, in interior cover 12, be processed with a square three-way groove 25 vertically, being equipped with on the tailing axle 23 can be along the standstill locking pin 11 of square three-way groove 25 slips, and tailing axle 23 adopts Spielpassung with interior cover 12.