CN2207469Y

CN2207469Y - Axial clearance regulating device for roller bearing

Info

Publication number: CN2207469Y
Application number: CN 94236077
Authority: CN
Inventors: 赵永胜; 张孚镇; 吕剑浩; 李建沛; 丁立生
Original assignee: Jinan Iron & Steel General Works
Current assignee: Jinan Iron & Steel General Works
Priority date: 1994-12-27
Filing date: 1994-12-27
Publication date: 1995-09-13
Anticipated expiration: 2004-12-27

Abstract

The utility model relates to a bearing seat structure of rollers for a rolling mill, particularly an axial clearance regulating device for roller bearings, solving the problem that the axial clearance between roller bearings is difficult to adjust. The utility model is mainly characterized in that the axial clearance between roller bearings is difficult to adjust is provided with a clearance regulating mechanism which is composed of an inner thread ring and an outer thread ring which are respectively pressed on the inner ring of a radial thrust ball bearing and the outer ring of a radial thrust ball bearing a positioning plate which can be used for positioning the inner thread ring and the outer thread ring at any position for fixation and a positioning block which can be used for positioning the inner thread ring and the outer thread ring at any position for fixation. The axial clearance regulating device for roller bearings can realize stepless regulation for the axial clearance of bearings; the device is suitable for rolling bar materials and small-scale and middle-scale rolling mills of wire materials; besides, the utility model can also be used for machines requiring for similar regulation.

Description

Axial clearance regulating device for roller bearing

The utility model relates to the rolling bearing stand structure of milling train, particularly a kind of rolling bearing axial interval regulator.

Current, the structural type of rolling mill roll bearing support mainly contains two classes, and a class is to use sliding bearing, as the employing babbit-lined metal, or bakelite tile; One class is to use rolling bearing, as adopting four-row tapered roller bearing or cylindrical roller bearing.Adjustment in this two class formations middle (center) bearing axial clearance all is to adopt the pad adjustment, promptly utilizes the different pad of thickness to adjust the axial clearance of control bearing.The method of this pad adjustment will be measured needed gap with special instrument, and then selects suitable pad for use.This method not only formality is loaded down with trivial details, and adjusts the problem that all there are difficult grasp control in precision, reliability and assembling aspect.Because the adjustment of bearing axial clearance is improper, causes the roll axial float, influences rolled piece and nips, and makes productivity low, the rolled piece geometrical precision is low.

The purpose of this utility model be exactly a kind of energy of design easy, accurately adjust the structure of bearing axial clearance, to solve the problem of roll axial float.

The utility model is to realize like this, one dish cylindrical roller bearing respectively is housed on the axle journal at roll two ends, a dish radial ball bearing is equipped with in the cylindrical roller bearing outside at one end, the angular contact ball bearing of two half inner rings of one dish or double semi outer rings is housed in the cylindrical roller bearing outside of the other end, its bearing axial interval regulator is to be spun on the outer ring that the outside thread ring in the upper bracket interior threaded hole presses angular contact ball bearing, is spun on the inner ring that internal thread ring on the clip nut that is fixed in the roll axial trough presses angular contact ball bearing.

For make press angular contact ball bearing outside, the internal thread ring is after adjusting bearing axial clearance, can both accurately locate easily in any position, unlikely loosening, all be evenly equipped with positioning pin hole on the outer side surface of threaded collar and internal thread ring outside, tighten the positioning plate that set has the outside thread ring of positioning pin hole at upper bracket, tighten the positioning block that set has the internal thread ring of positioning pin hole at roll mandrel, the fastener hole of positioning plate and positioning block is all long trough, the activity regulated quantity of its flute length can satisfy the centre distance that makes outside thread ring and internal thread ring turn over a positioning pin hole respectively, all is inserted with locating stud in the positioning pin hole of positioning plate and outside thread ring and positioning block and internal thread ring.

Adjustment in this regulating device middle (center) bearing axial clearance relies on rotation outside thread ring and internal thread ring to realize, therefore can conveniently at any time as required accurately the gap be transferred to the optimum state, has prevented the axial float of roll.Again because the fastener hole of positioning plate and positioning block all is a long trough, certain the sphere of activities is arranged, so can make on positioning plate and the positioning block pin-and-hole respectively with outside thread ring and internal thread ring on pin-and-hole align, insert locating stud, make outside thread ring and internal thread loop mapping, fixing, the gap that maintenance mixes up is constant.This device has simple in structure, and is easy to adjust, adjusts the high characteristics of precision, the stepless adjustment and the location of having realized bearing axial clearance.

Fig. 1 is a sectional view of the present utility model;

Fig. 2 is a G of the present utility model portion enlarged view;

Fig. 3 is that K of the present utility model is to view.

Below in conjunction with accompanying drawing the utility model is described in detail.

As can be seen from Figure 1, a dish 672700 type four row short cylindrical roller shafts respectively are housed on the axle journal at two ends, roll 5 left and right sides and hold 3 and 4.Bearing 3 and 4 is contained in respectively in Y-axis bearing 1 and 2, and setting sleeve 25 has been determined their positions on roll 5.One dish radial ball bearing 7 is housed in bearing 3 outsides are fastened on flange plate 6 endoporus on bearing support 1 outer side surface, and the outside of bearing 7 has and limits it at the check ring 8 of position on the roll 5 be fastened on trim ring 9 on the flange plate 6.In bearing 4 outsides, also have a dish 116100 type double semi outer rings single row angular contact ball bearings 11 on the roll pins having.The inner ring inner side surface of bearing 11 presses bearing 4 inner ring outer side surfaces, and the outer ring inner side surface presses bearing 4 outer ring outer side surfaces.Bearing 11 is contained in the endoporus of the upper bracket 10 that is fastened on right bearing seat 2 outer side surfaces.In bearing 11 outsides, be spun on the outer ring that the outside thread ring 12 in upper bracket 10 interior threaded holes presses bearing 11; Be spun on the internal thread ring of splitting on the swivel nut 14 13 and press the inner ring of bearing 11.Split swivel nut 14 and combine with spring ring 15, be installed in the axial trough of roll 5 by two semicircle bung flanges.In order to prevent that splitting swivel nut 14 rotates, and is equipped with key 16 in its endoporus in axial trough.Threaded collar 12 and internal thread ring are 13 outside, and the seal ring that is contained on the internal thread ring 13 is arranged.

From Fig. 2 and Fig. 3, as can be seen, tighten the positioning plate 17 of set outside thread ring 12, tighten the positioning block 18 of set internal thread ring 13 at roll 5 at upper bracket 10.On the outer side surface of outside thread ring 12 and internal thread ring 13, be evenly equipped with positioning pin hole 19 and 20.Pin-and-hole 19 on pin-and-hole on the positioning plate 17 and the outside thread ring 12 aligns, and the inside is inserted with locating stud 21, and the pin-and-hole 20 on pin-and-hole on the positioning block 18 and the internal thread ring 13 aligns, and the inside is inserted with locating stud 22.

As can be seen from Figure 3, the

fastener hole

23 and 24 of positioning plate 17 and positioning block 18 is all long trough, its activity regulation range satisfies the centre distance that makes outside thread ring 12 and internal thread ring 13 turn over a pin-and-hole respectively, to guarantee that outside thread ring 12 and internal thread ring 13 rotate to any position and can both locate.Concrete adjusting method is after outside thread ring 12 and internal thread ring 13 are adjusted bearing axial clearance, running fix plate 17 and positioning block 18, make on it pin-and-hole respectively with outside thread ring 12 on pin-and-hole 19 and the pin-and-hole 20 on the internal thread ring 13 align, insert locating

stud

21 and 22, screw the clamping bolt of positioning plate 17 and the fastening screw trip bolt of positioning block 18 then, they are fastened on respectively on upper support frame 10 and the roll 5.

Claims

1, a kind of rolling bearing axial interval regulator, one dish cylindrical roller bearing respectively is housed on the axle journal at roll two ends, a dish radial ball bearing is equipped with in the cylindrical roller bearing outside at one end, the angular contact ball bearing of two half inner rings of one dish or double semi outer rings is housed in the cylindrical roller bearing outside of the other end, it is characterized in that: be spun on the outer ring that the outside thread ring in the upper bracket interior threaded hole presses angular contact ball bearing, be spun on the inner ring that internal thread ring on the clip nut that is fixed in the roll axial trough presses angular contact ball bearing.

2, rolling bearing axial interval regulator according to claim 1, it is characterized in that: all be evenly equipped with positioning pin hole on the outer side surface of threaded collar and internal thread ring outside, tighten the positioning plate that set has the outside thread ring of positioning pin hole at upper bracket, tighten the positioning block that set has the internal thread ring of positioning pin hole at roll mandrel, the fastener hole of positioning plate and positioning block is all long trough, the activity regulated quantity of its flute length can satisfy the centre distance that makes outside thread ring and internal thread ring turn over a positioning pin hole respectively, all is inserted with locating stud in the positioning pin hole of positioning plate and outside thread ring and positioning block and internal thread ring.