CN213003636U

CN213003636U - Bearing dismounting device

Info

Publication number: CN213003636U
Application number: CN202021484477.9U
Authority: CN
Inventors: 刘海熙; 邱承海; 马凌志; 覃金标
Original assignee: Guangxi Liuzhou Iron and Steel Group Co Ltd
Current assignee: Guangxi Liuzhou Iron and Steel Group Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-04-20
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses a bearing dismounting device, which relates to the technical field of bearing box dismounting tool manufacturing, and comprises a base, wherein a power cylinder is transversely arranged on the base through a mounting seat, and the mounting seat comprises a rear support sub-seat and a front support sub-seat which are supported on the power cylinder; the base is provided with a top column at a position close to the front support sub-base, and an adjusting base plate is arranged between the top column and the front support sub-base; the power cylinder is provided with a top disc at the front end of the piston rod in a penetrating mode, the top disc is located between the top column and the front supporting sub-seat, and a limiting block used for preventing collision of the top disc is arranged on the front supporting sub-seat. Compared with the prior art, the utility model discloses can solve current finish rolling work roller bearing box inner bearing and dismantle not only that the cost of labor is big but also make the bearing cause the problem of the harm that can not repair easily.

Description

Bearing dismounting device

Technical Field

The utility model belongs to the technical field of the bearing box extracting tool manufacturing technology and specifically relates to an instrument that is used for finish rolling work roll bearing box inner bearing to dismantle.

Background

The maintenance of the bearing in the bearing box of the finish rolling working roll is important work in a hot rolled plate production plant, and field maintenance personnel accurately judge the damage degree of the bearing through the rotating sound, vibration, temperature, the color of lubricating grease and the like of the bearing, so that the bearing box which is damaged greatly needs to be disassembled and maintained; secondly, in order to prolong the service life of the bearing, the bearing load area of the bearing needs to be readjusted in a specific maintenance period, and the bearing box needs to be disassembled. The bearing box is disassembled from the roller, oil stains on the outer surface of a bearing seat are cleaned firstly, a locking device and a sealing ring on the bearing seat are disassembled, the bearing box is turned for 90 degrees and then is horizontally placed on a horizontal plane, an end cover, a thrust bearing and a roller changing hook at the far roller end are disassembled, the bearing box is turned for 180 degrees and then is horizontally placed, the end cover and the sealing ring at the near roller end are disassembled, and a special lifting appliance is used for lifting the bearing out of a box body. When the bearing is lifted away from the box body, the bearing is damaged and deformed, fine particles scratch the inner side wall of the bearing box, the bearing lacks oil and is subjected to mechanical thermal expansion and the like due to long-term use of the bearing in a machine, most of the bearings cannot be smoothly lifted out, and the bearings can be taken out by knocking with the aid of external force; the bearing which cannot be taken out is knocked by external force, and in order to improve the maintenance efficiency, destructive oxygen cutting is mostly directly carried out; in addition, the bearing is beaten and destructively cut by oxygen, so that a large amount of manpower and material resources are required, and the labor cost is high; meanwhile, the bearing is irreparably damaged, the cost of spare part maintenance and manpower and material resources is greatly increased, and the working efficiency is also greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a bearing dismounting device is provided to solve the problem that current finish rolling work roll bearing box inner bearing dismantles not only that the cost of labor is big but also make the bearing cause irreparable harm easily.

The utility model provides a technical scheme that technical problem adopted does: the bearing dismounting device comprises a base, wherein a power cylinder is transversely arranged on the base through a mounting seat, and the mounting seat comprises a rear support sub-seat and a front support sub-seat which are supported on the power cylinder; the base is provided with a top column at a position close to the front support sub-base, and an adjusting base plate is arranged between the top column and the front support sub-base; the power cylinder is provided with a top disc at the front end of the piston rod in a penetrating mode, the top disc is located between the top column and the front supporting sub-seat, and a limiting block used for preventing collision of the top disc is arranged on the front supporting sub-seat.

In the above technical solution of the bearing detaching device, a more specific technical solution may also be: the adjusting base plate is placed on the base, and a plurality of base plate positioning pins are arranged on the outer edge of the base close to the adjusting base plate; and a plurality of bearing seat positioning pins are arranged at the edge of the upper end surface of the adjusting base plate close to the upper end surface.

Further: the power cylinder is a horizontal hydraulic cylinder, the horizontal hydraulic cylinder is provided with a piston rod extending out of the cylinder body, a threaded rod section is arranged at the front end of the piston rod, and the top disc is fixed on the threaded rod section of the piston rod; the front part of the cylinder body is provided with a radial shaft which is vertical to the axial lead of the cylinder body.

Further: the rear supporting sub-base comprises a lower supporting plate and an arc cover plate, the top of the lower supporting plate is provided with an arc groove, and the arc cover plate is covered on the arc groove of the lower supporting plate; the rear part of the cylinder is fixed on the lower supporting plate through the arc-shaped cover plate and the bolt; the front supporting sub-base comprises two lower supporting side plates which are respectively arranged at two sides of the axial lead of the cylinder body, the top of each lower supporting side plate is provided with a lower arc-shaped groove, and an arc-shaped side cover plate is covered on the lower arc-shaped groove of each lower supporting side plate; and two ends of the radial shaft of the cylinder body are fixed on the lower supporting side plate through the arc-shaped side cover plate and the bolt.

Further: the limiting block comprises an arc limiting plate with a shaft and the barrel body coaxially arranged, two ends of the arc limiting plate are both connected with axial connecting plates, and the axial connecting plates are connected with the arc side cover plates; the limiting block is positioned between the top disc and the front support sub-base.

Further: the number of the top columns is two, and the two top columns are respectively arranged on the base in front of two sides of the axial lead of the barrel.

The utility model discloses the orientation that horizontal hydraulic cylinder moved ahead through piston rod drive paring disc is meant to preceding.

Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has: 1. because the bearing dismounting device is provided with the power cylinder transversely on the base through the mounting seat, the mounting seat comprises a rear support sub-seat and a front support sub-seat which are supported on the power cylinder; the base is provided with a top column near the front supporting sub-seat, and an adjusting base plate is arranged between the top column and the front supporting sub-seat; the front end of the piston rod of the power cylinder is provided with a top disc in a penetrating way; before disassembly, replacing the front end top disc of the piston rod according to bearings on different types of bearing seats, and replacing an adjusting base plate corresponding to the bearing seat; when the bearing box is disassembled, the bearing seat with the external end cover removed is hoisted to the adjusting base plate, the axial lead of the bearing on the bearing seat is coaxial with the axial lead of the horizontal power cylinder, and the front end of the bearing box is abutted to the top column; starting the power cylinder, enabling the power cylinder to drive the top disc to move forwards through the piston rod, enabling the top disc to prop against the bearing in the bearing box, enabling the power cylinder to continuously act to apply force to the bearing, and finally ejecting the bearing out of the bearing box, namely completing the dismounting work of the bearing box and the bearing; the working efficiency of bearing disassembly is improved, the utilization rate of personnel is improved, and meanwhile, the bearings of different sizes can be maintained in batches; the bearing is completely stressed in the dismounting process, so that the problem that the bearing is damaged by manual beating in the past is avoided; 2. the bearing dismounting device is simple in structure and convenient to maintain and replace.

Drawings

Fig. 1 is a schematic structural diagram of a bearing seat placement device for disassembling a bearing according to an embodiment of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a cross-sectional view at a-a of fig. 1.

Fig. 4 is a schematic structural diagram of the present invention.

Fig. 5 is a top view of fig. 4.

Fig. 6 is a schematic structural diagram of the limiting block of the present invention.

Fig. 7 is a schematic structural view of the horizontal hydraulic cylinder of the present invention.

Fig. 8 is a schematic structural view of a bearing housing according to an embodiment of the present invention when a bearing is removed.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

the utility model refers to the front is the K direction that the horizontal hydraulic cylinder 2 drives the top disk 4 to move forward through the piston rod 2-3 as shown in figure 1 and figure 8.

The bearing dismounting device shown in fig. 1 comprises a base 1, wherein the base 1 of the embodiment is a rectangular steel plate; a power cylinder is transversely arranged on the base 1 through a mounting seat, and the mounting seat 3 of the embodiment comprises a rear support sub-seat 3-1 and a front support sub-seat 3-2 which are supported on the power cylinder; a top column 8 is arranged at the position of the base 1 close to the front supporting sub-seat 3-2, an adjusting base plate 5 is arranged on the base 1 between the top column 8 and the front supporting sub-seat 3-2, and the adjusting base plate 5 is placed on the upper end surface of the base 1 so as to be replaceable at any time; the front end of a piston rod of the power cylinder is provided with a top disc 4 in a penetrating manner, the top disc 4 is positioned between a top column 8 and a front support sub-seat 3-2, a limiting block 3-3 for preventing the top disc 4 from colliding is arranged on the front support sub-seat 3-2, and the limiting block 3-3 is positioned between the top disc 4 and the front support sub-seat 3-2; the limiting block 3-3 of the embodiment comprises an arc limiting plate 3-3-1 which is perpendicular to the axial lead of the cylinder, two ends of the arc limiting plate 3-3-1 are connected with axial connecting plates 3-3-2, and the axial connecting plates 3-3-2 are connected with arc side cover plates 3-2-2 through bolts; a plurality of base plate positioning pins 7 are arranged on the base 1 at the position close to the outer edge of the adjusting base plate 5; a plurality of bearing seat positioning pins 6 are arranged at the edge near the upper end surface of the adjusting shim plate 5, as shown in fig. 2; the power cylinder of the embodiment is a horizontal hydraulic cylinder 2, the horizontal hydraulic cylinder 2 is provided with a piston rod 2-3 extending out of a cylinder body 2-1, the front end of the piston rod 2-3 is provided with a threaded rod section, and a top disc 4 is fixed on the threaded rod section of the piston rod 2-3 through a gasket and a nut so as to ensure that the top disc 4 can be replaced; the front part of the cylinder body 2-1 is provided with a radial shaft 2-2 which is vertical to the axial lead of the cylinder body 2-1, as shown in figure 7; the rear supporting sub-base 3-1 of the embodiment comprises a lower supporting plate 3-1-1 with an arc-shaped groove at the top and an arc-shaped cover 3-1-2 covering the arc-shaped groove of the lower supporting plate 3-1-1, wherein the bottom of the lower supporting plate 3-1-1 is welded on the base 1; the rear part of the cylinder 2-1 is fixed on the lower supporting plate 3-1-1 through an arc cover plate 3-1-2 and a bolt; the front supporting sub-seat 3-2 comprises two lower supporting side plates 3-2-1 which are respectively arranged at two sides of the axial lead of the cylinder body 2-1, the top of each lower supporting side plate 3-2-1 is provided with a lower arc-shaped groove, and the lower arc-shaped groove of each lower supporting side plate is covered with an arc-shaped side cover plate 3-2-2; two ends of a radial shaft 2-2 of the cylinder 2-1 are fixed on a lower supporting side plate 3-1-1 through arc-shaped side cover plates 3-2-2 and bolts, the bottom of the lower supporting side plate 3-1-1 is welded on a base 1, two top pillars 8 are arranged in the embodiment, and the two top pillars 8 are respectively welded on the base 1 in front of two sides of the axial lead of the cylinder 2-1, as shown in fig. 3, 4, 5 and 6.

Before disassembly, replacing the top disc 5 of the bearing disassembling device according to bearings 10 on different types of bearing seats 9, lifting and placing the adjusting base plates 5 corresponding to the bearing seats 9 into a range enclosed by pin holes of a plurality of base plate positioning pins 7 on the upper end surface of the base 1, and positioning the adjusting base plates 5 by adopting the mounting base plate positioning pins 7; during disassembly, the bearing block 9 with the external end cover removed is lifted to the adjusting backing plate 5 and is positioned on the adjusting backing plate 5 through the plurality of bearing block positioning pins 6, the axial lead of a bearing 10 on the bearing block 9 is coaxial with the axial lead of the cylinder body 2-1 of the horizontal hydraulic cylinder 2, and the bearing box 9 is abutted to the ejection column 8; and starting the horizontal hydraulic cylinder 2, enabling the horizontal hydraulic cylinder 2 to drive the top disc 4 to move forwards through the piston rod 2-3, enabling the top disc to prop against the bearing 10 in the bearing box 9, enabling the horizontal hydraulic cylinder 2 to continuously act to apply force to the bearing 10, and finally ejecting the bearing 10 out of the bearing box 9, namely completing the dismounting work of the bearing box 9 and the bearing 9, as shown in fig. 1 and 8.

Claims

1. The utility model provides a bearing dismounting device which characterized in that: the device comprises a base, wherein a power cylinder is transversely arranged on the base through a mounting seat, and the mounting seat comprises a rear support sub-seat and a front support sub-seat which are supported on the power cylinder; the base is provided with a top column at a position close to the front support sub-base, and an adjusting base plate is arranged between the top column and the front support sub-base; the power cylinder is provided with a top disc at the front end of the piston rod in a penetrating mode, the top disc is located between the top column and the front supporting sub-seat, and a limiting block used for preventing collision of the top disc is arranged on the front supporting sub-seat.

2. The bearing removal apparatus of claim 1, wherein: the adjusting base plate is placed on the base, and a plurality of base plate positioning pins are arranged on the outer edge of the base close to the adjusting base plate; and a plurality of bearing seat positioning pins are arranged at the edge of the upper end surface of the adjusting base plate close to the upper end surface.

3. A bearing dismounting device according to claim 1 or 2, characterized in that: the power cylinder is a horizontal hydraulic cylinder, the horizontal hydraulic cylinder is provided with a piston rod extending out of the cylinder body, a threaded rod section is arranged at the front end of the piston rod, and the top disc is fixed on the threaded rod section of the piston rod; the front part of the cylinder body is provided with a radial shaft which is vertical to the axial lead of the cylinder body.

4. A bearing dismounting device according to claim 3, characterized in that: the rear supporting sub-base comprises a lower supporting plate and an arc cover plate, the top of the lower supporting plate is provided with an arc groove, and the arc cover plate is covered on the arc groove of the lower supporting plate; the rear part of the cylinder is fixed on the lower supporting plate through the arc-shaped cover plate and the bolt; the front supporting sub-base comprises two lower supporting side plates which are respectively arranged at two sides of the axial lead of the cylinder body, the top of each lower supporting side plate is provided with a lower arc-shaped groove, and an arc-shaped side cover plate is covered on the lower arc-shaped groove of each lower supporting side plate; and two ends of the radial shaft of the cylinder body are fixed on the lower supporting side plate through the arc-shaped side cover plate and the bolt.

5. The bearing removal apparatus of claim 4, wherein: the limiting block comprises an arc limiting plate with a shaft and the barrel body coaxially arranged, two ends of the arc limiting plate are both connected with axial connecting plates, and the axial connecting plates are connected with the arc side cover plates; the limiting block is positioned between the top disc and the front support sub-base.

6. The bearing removal apparatus of claim 5, wherein: the number of the top columns is two, and the two top columns are respectively arranged on the base in front of two sides of the axial lead of the barrel.