CN212597937U

CN212597937U - Assembly structure of roller and bearing seat

Info

Publication number: CN212597937U
Application number: CN202020188634.5U
Authority: CN
Inventors: 郑昆; 唐清荣; 郑永德
Original assignee: Baosteel Desheng Stainless Steel Co ltd
Current assignee: Baosteel Desheng Stainless Steel Co ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2021-02-26
Anticipated expiration: 2030-02-20

Abstract

The utility model discloses an assembly structure of roll and bearing frame, including roll and bearing frame, be equipped with the thrust bearing and the cylindrical bearing of coaxial arrangement in the bearing frame, the roll tip passes in proper order and installs in the cylindrical bearing and the thrust bearing of bearing frame, and the one end side that thrust bearing is close to cylindrical bearing is equipped with inside and outside holding ring, and the one end side that cylindrical bearing was kept away from to thrust bearing is equipped with position sleeve and gland, and interior holding ring and position sleeve all do not extend to thrust bearing center side, and thrust bearing's inner circle wall bodiness is to directly pasting with the roll and touch. The utility model discloses an arrange thrust bearing's tip in with interior holding ring and position sleeve completely, the inner circle wall of bodiness thrust bearing simultaneously, to thrust bearing's the direct suit of inner circle on the roll, touch the installation with the roll subsides, so, the intensity of the thrust bearing inner circle of bodiness is better, can bear bigger axial force, is difficult cracked.

Description

Assembly structure of roller and bearing seat

Technical Field

The utility model relates to a finish rolling equipment field especially relates to an assembly structure of roll and bearing frame.

Background

In a finishing mill in a hot rolling mill factory of a metallurgical iron and steel enterprise, in a conventional assembling structure of a roll and a chock, as shown in fig. 1, a thrust bearing 201 and a cylindrical bearing 202 are coaxially arranged in the chock 200, the end part of the roll 100 sequentially penetrates through the cylindrical bearing 202 and the thrust bearing 201, an inner positioning ring (301, 302) and an outer positioning ring (301, 302) are arranged at one end side of the thrust bearing 201 close to the cylindrical bearing 202, a positioning sleeve 401 and a gland 402 are arranged at one end side of the thrust bearing 201 far away from the cylindrical bearing 202, wherein the outer positioning ring 302 and the gland 402 are fixedly installed with the chock 200 for axially positioning an outer ring of the thrust bearing 201, the inner positioning ring 301 and the positioning sleeve 401 are sleeved on the roll 100 for axially positioning an inner ring of the thrust bearing 201, and an extension part (3011, 4011) extends from one side of each of the thrust bearing 201 of the inner positioning, 4011) filling the gap between the thrust bearing 201 and the roll 100. In the assembly structure of traditional roll and bearing frame, for wearing and tearing, damage between the bearing position of avoiding in the working process roll 100 and thrust bearing 201, it makes interior holding ring 301 and position sleeve 401 axial extend the extension to one side of thrust bearing 201, then with thrust bearing 201 the interior ring suit, paste on contact in interior holding ring 301 and position sleeve 401 to let roll 100 bearing position can not receive thrust bearing 201's wearing and tearing. However, it has been found in long-term production that when the roll 100 rotates in synchronization with the inner ring of the thrust bearing 201, the bearing position of the roll 100 is hardly worn.

More problems in production are that due to the tolerance of the structures such as the roller 100, the bearing seat 200 and the like, the roller 100 has larger axial force to the bearing seat 200 in the rotation process, the axial force is mainly borne on the thrust bearing 201, and the conventional thrust bearing has insufficient wall thickness, is thinner and is easy to crack under the action of larger axial force for a long time, so that the roller is burnt and blocked on line, and a large amount of time is wasted for replacing the roller and treating waste steel; and the inner positioning ring 301 and the positioning sleeve 401 are arranged between the roller shaft 100 and the thrust bearing 201 at intervals, the more the structure between the roller shaft 100 and the thrust bearing 201 is, the more the gap is easily generated, and the axial force borne by the thrust bearing 201 is further increased by the generation of the gap.

Disclosure of Invention

An object of the utility model is to provide an assembly structure of roll and bearing frame.

The utility model provides an assembly structure of roll and bearing frame, including roll and bearing frame, be equipped with thrust bearing and the cylindrical bearing of coaxial range in the bearing frame, the roll tip passes in proper order and installs in the cylindrical bearing and the thrust bearing of bearing frame, thrust bearing is close to the one end side of cylindrical bearing and is equipped with interior, outer holding ring, thrust bearing keeps away from the one end side of cylindrical bearing and is equipped with position sleeve and gland, wherein, outer holding ring and gland all are fixed with the casing installation of bearing frame, axial and thrust bearing outer lane top touch, interior holding ring and the equal suit of position sleeve are on the roll, axial and thrust bearing inner race top touch, interior holding ring and position sleeve all do not extend to thrust bearing center side, and thrust bearing's inner circle wall bodiness is to directly pasting with the roll and touch.

The assembly structure of the roller and the bearing seat of the utility model is characterized in that the inner positioning ring and the positioning sleeve are completely arranged at the end part of the thrust bearing, meanwhile, the outer diameter of the inner ring of the thrust bearing with the same specification of the outer ring and the roller is unchanged, the inner diameter is reduced, namely, the inner ring wall of the thrust bearing is thickened until the inner ring of the thrust bearing is directly sleeved on the roller and is installed in a contact way with the roller, thus, so that compared with the prior bearing seat with the same specification of the outer ring and the roller, the thickness of the thrust bearing inner ring of the utility model is increased, the strength of the thrust bearing inner ring is better, and the thrust bearing inner ring can bear larger axial force, the roller bearing is not easy to break, the inner ring of the thrust bearing is directly sleeved on the roller, the gap value generated between the thrust bearing and the roller is relatively small, and compared with an assembly structure of a traditional roller and a bearing seat, the axial force borne by the thrust bearing is smaller, so that the phenomena of roller burning and blocking are effectively avoided.

Drawings

FIG. 1 is a schematic structural view of a conventional roll and chock assembly;

fig. 2 is a schematic structural diagram of the assembly structure of the roll and the bearing seat of the present invention.

Detailed Description

The following detailed description of the embodiments of the roller and chock assembly structure according to the present invention is made with reference to the accompanying drawings:

as shown in fig. 2, an assembly structure of a roller and a chock comprises a roller 1 and a chock 2, a thrust bearing 21 and a cylindrical bearing 22 are coaxially arranged in the chock 2, the end of the roller 1 sequentially passes through and is installed in the cylindrical bearing 22 and the thrust bearing 21 of the chock 2, an inner positioning ring (31) and an outer positioning ring (32) are arranged on one end side of the thrust bearing 21 close to the cylindrical bearing 20, a positioning sleeve 41 and a gland 42 are arranged on one end side of the thrust bearing 21 far away from the cylindrical bearing 22, the outer positioning ring 32 and the gland 42 are both fixedly mounted on the housing 20 of the bearing pedestal 2 and are axially contacted with the outer ring of the thrust bearing 21, the inner positioning ring 31 and the positioning sleeve 41 are both sleeved on the roller 1 and are axially contacted with the inner ring of the thrust bearing 21, the inner positioning ring 31 and the positioning sleeve 41 do not extend towards the center side of the thrust bearing 21, and the inner ring wall of the thrust bearing 21 is thickened to be directly contacted with the roller 1.

In the assembly structure of the roller and the bearing seat, the thrust bearing 21 in the bearing seat 2 is mainly used for bearing the axial force received during finish rolling; the cylindrical bearing 22 is mainly used for bearing radial force applied during finish rolling.

The utility model discloses the assembly structure of roll and bearing frame, the axial is pushed up inner positioning ring 31 and position sleeve 41 that touches with thrust bearing 21 inner ring, has realized the axial positioning of thrust bearing 21 inner ring; the outer positioning ring 32 and the gland 42 which are axially contacted with the inner ring of the thrust bearing 21 realize the axial positioning of the outer ring of the thrust bearing 21.

The utility model discloses the assembly structure of roll and bearing frame, through arranging inner position ring 31 and position sleeve 41 in thrust bearing 21's tip completely, make outer lane and roller specification the same thrust bearing 21 simultaneously, its inner circle external diameter is unchangeable, the internal diameter reduces, the inner circle wall of bodiness thrust bearing 21 promptly, the inner circle of thrust bearing 21 directly suit on roll 1, with roll 1 laminating installation, so as to compare current outer lane and roller are bearing frame 2 of the same specification, the utility model discloses thrust bearing 21 inner circle thickness increase, the intensity of thrust bearing 21 inner circle is better, can bear bigger axial force, and difficult cracked, and the inner circle of thrust bearing 21 directly suit on roll 1, the clearance value that produces between thrust bearing 21 and roll 1 is relatively less, compare the assembly structure of traditional roll and bearing frame, the axial force that thrust bearing 21 receives is littleer, the phenomena of roller burning and jamming are effectively avoided. And a series of equipment fault hidden dangers caused by the equipment fault detection are eliminated.

The utility model discloses the assembly structure of roll and bearing frame, in the actual production installation, mainly shorten the length of interior position ring 31 and position sleeve 41, increase the thickness of thrust bearing 21 inner circle, during the installation, install in thrust bearing 21's both ends with interior position ring 31 and position sleeve 41, thrust bearing 21 then directly suit on roll 1. Since the inner ring of the thrust bearing 21 rotates synchronously with the roll 1 during the rotation of the roll 1 without relative movement, the thrust bearing 21 is not worn by the thrust bearing 21.

The utility model discloses the assembly structure of roll and bearing frame can be arranged in the roll installation of the arbitrary frame of metallurgical iron and steel enterprise hot rolling mill finish rolling F1-F4.

The utility model discloses right the utility model belongs to the technical field of the ordinary skilled person, do not deviating from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides an assembly structure of roll and bearing frame, including roll and bearing frame, be equipped with thrust bearing and the cylindrical bearing of coaxial range in the bearing frame, the roll tip passes in proper order and installs in the cylindrical bearing and the thrust bearing of bearing frame, thrust bearing is close to cylindrical bearing's one end side and is equipped with in, outer holding ring, thrust bearing keeps away from cylindrical bearing's one end side and is equipped with position sleeve and gland, wherein, outer holding ring and gland are all fixed with the casing installation of bearing frame, the axial touches with thrust bearing outer lane top, interior holding ring and the equal suit of position sleeve are on the roll, the axial touches its characterized in that with thrust bearing inner race top: the inner positioning ring and the positioning sleeve do not extend towards the center side of the thrust bearing, and the inner ring wall of the thrust bearing is thickened to be directly contacted with the roller.