Bearing seat dismounting device suitable for working roll of rolling mill

Abstract

A bearing seat dismounting device suitable for a working roll of a rolling mill comprises a long-strip-shaped base, a lifting part, a separating part and a side pushing part. The lifting part is arranged on the long-strip-shaped base; the separation part is arranged at one end of the long-strip-shaped base in the length direction; the side pushing part is arranged on the separating part; the lifting part comprises a fixed lifting mechanism and a movable lifting mechanism; the fixed lifting mechanism and the movable lifting mechanism are both arranged on the long-strip-shaped base. According to the device, the dismounting efficiency of the bearing seat at the end part of the working roll is improved, and the labor intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dismantling device, especially a device capable of dismantling the bearing seat on both sides of the work roll of a rolling mill, and belongs to the technical field of bearing seat dismantling equipment on both sides of a work roll. BACKGROUND

[0002] A bearing seat is installed on both sides of a hot rolling work roll. The bearing in the bearing seat is deformed or damaged after long-term use, which causes the bearing to be locked with the roll neck during on-line rolling and difficult to disassemble and repair. Currently, the dismantling of the bearing seat on both sides of the work roll is completed manually. The staff uses a jack or a hydraulic cylinder and other equipment to press against the bearing seat after fixing the work roll, and then the bearing seat is knocked out. However, in the actual operation process, the bearing seat gradually moves away from the work roll, that is, it is inclined in the left-right or up-down direction during the dismantling process, which causes the bearing seat and the work roll not to be on the same center, and if the bearing seat is found to be stuck with the work roll due to the inclination during disassembly, the staff needs to use a sledgehammer to knock it, which not only affects the disassembly efficiency of the bearing seat but also increases the labor intensity of the staff. Therefore, a dismantling device is needed to assist the staff to quickly disassemble the bearing seat at the end of the work roll. SUMMARY

[0003] The utility model aims at overcoming the defects of the prior art and providing a bearing seat dismantling device suitable for a work roll of a rolling mill, which can not only reduce the labor intensity of the staff but also improve the disassembly efficiency of the bearing seat.

[0004] The problem is solved by the following technical scheme.

[0005] A bearing seat dismantling device suitable for a work roll of a rolling mill, comprising a long base, a lifting part, a separating part, and a side pushing part; the lifting part is arranged on the long base; the separating part is arranged at one end of the long base in the length direction; the side pushing part is arranged on the separating part; the lifting part comprises a fixed lifting mechanism and a movable lifting mechanism; both the fixed lifting mechanism and the movable lifting mechanism are arranged on the long base.

[0006] The bearing seat dismantling device suitable for a work roll of a rolling mill comprises a first base, a first lifting seat, and a first arc-shaped supporting plate; the first base is fixedly arranged at one end of the long base on the end face in the length direction; a square hole is arranged at the top end of the first base, and the first lifting seat is inserted into the square hole at the top end of the first base; a first hydraulic cylinder is arranged at the inner wall bottom end of the square hole of the first base, and the end of the piston rod of the first hydraulic cylinder is connected with the bottom end face of the first lifting seat; the first arc-shaped supporting plate is arranged on the top end face of the first lifting seat.

[0007] The moving lifting mechanism comprises a sliding plate, a second base, a second lifting plate and a second arc-shaped supporting plate; the top end surface of the long base is provided with a sliding rail along the length direction thereof, and the sliding plate is slidingly arranged on the sliding rail of the top end surface of the long base; the sliding plate is provided with a insertion hole, and the center of the top end surface of the long base is provided with a plurality of limiting holes equidistantly along the length direction thereof, the insertion hole is located directly above the limiting hole, and the insertion pin penetrates the insertion hole of the sliding plate and the limiting hole of the long base at the same time; the second base is arranged on the top end surface of the sliding plate, and the top end thereof is provided with a square hole, the second lifting plate is inserted into the square hole at the top end of the second base; the inner wall bottom end of the square hole at the top end of the second base is provided with a second hydraulic cylinder, and the end of the piston rod of the second hydraulic cylinder is connected with the bottom end of the second lifting plate; the second arc-shaped supporting plate is arranged on the top end of the second lifting plate.

[0008] The separating part comprises a sliding seat, a third hydraulic cylinder, a guide plate, a push plate and a lifting piece; the number of the third hydraulic cylinders is two, and each of the third hydraulic cylinders is arranged on the top end surface of the long base, the two third hydraulic cylinders are symmetrically arranged on the two sides of the first base, and the axis of the piston rod of the third hydraulic cylinder is parallel to the length direction of the long base; the end of the piston rod of the third hydraulic cylinder is connected with the push plate; the push plate is arranged on one end of the top end surface of the sliding seat close to the long base; the bottom end surface of the sliding seat is provided with a traveling wheel at each corner; the end surface of the long base close to the sliding seat is provided with a guide hole, and the guide plate is inserted into the guide hole of the long base, and one end of the guide plate is connected with the sliding seat; the lifting piece is arranged on the top end surface of the sliding seat.

[0009] The lifting piece comprises a fourth hydraulic cylinder, a lifting plate, a universal ball and a guide rod; the top end surface of the sliding seat is provided with a square groove, the fourth hydraulic cylinder is arranged at the center of the square groove at the top end of the sliding seat, and the end of the piston rod of the fourth hydraulic cylinder is connected with the center of the bottom end surface of the lifting plate; the bottom end of the inner wall of the square groove at the top end of the sliding seat is provided with a guide hole, and the guide rod is inserted into the guide hole of the inner wall of the square groove of the sliding seat, and the top end of the guide rod is connected with the bottom end surface of the lifting plate; the top end surface of the lifting plate is provided with a plurality of universal balls.

[0010] The side pushing part comprises two side pushing mechanisms, and the two side pushing mechanisms are symmetrically arranged on the two sides of the sliding seat along the width direction of the long base; the side pushing mechanism comprises a supporting vertical plate, a fifth hydraulic cylinder and a correcting plate; the supporting vertical plate is arranged on the side wall of the sliding seat; the fifth hydraulic cylinder is arranged on the vertical side wall away from the sliding seat of the supporting vertical plate, and the piston rod of the fifth hydraulic cylinder penetrates the side wall of the supporting vertical plate; the side wall center of the correcting plate is provided with a hinged seat, and the hinged seat is hingedly connected with the end of the piston rod of the fifth hydraulic cylinder; the correcting plate swings along the horizontal direction.

[0011] The utility model discloses a lifting part effectively adjusts the height of the work roll and bearing seat combination, and further ensures that the bearing seat can smoothly fall on the separation part, the separation part provides the force of far away from the work roll for the bearing seat, and provides the vertical force for the bearing seat, and the bearing seat is finely adjusted in the vertical direction, avoids the jamming caused by the misalignment of the center line in the process of pulling out the bearing seat, the horizontal direction of the bearing seat is finely adjusted through the side push part, and the bearing seat is not easy to pull out when being skewed and stuck in the horizontal direction. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0013] The list of each reference numeral in the drawing is: 1. long base, 2. first base, 3. first lifting seat, 4. first arc-shaped supporting plate, 5. sliding plate, 6. second base, 7. second lifting plate, 8. second arc-shaped supporting plate, 9. sliding seat, 10. third hydraulic cylinder, 11. push plate, 12. lifting plate, 13. universal ball, 14. supporting vertical plate, 15. fifth hydraulic cylinder, 16. straightening plate. DETAILED DESCRIPTION

[0014] Referring to Figure 1 The utility model discloses a lifting part effectively adjusts the height of the work roll and bearing seat combination, and further ensures that the bearing seat can smoothly fall on the separation part, the separation part provides the force of far away from the work roll for the bearing seat, and provides the vertical force for the bearing seat, and the bearing seat is finely adjusted in the vertical direction, avoids the jamming caused by the misalignment of the center line in the process of pulling out the bearing seat, the horizontal direction of the bearing seat is finely adjusted through the side push part, and the bearing seat is not easy to pull out when being skewed and stuck in the horizontal direction.

[0015] The fixed lifting mechanism comprises a first base 2, a first lifting seat 3 and a first arc-shaped supporting plate 4; the first base 2 is fixedly arranged at one end of the long base 1 in the length direction of the upper end surface; the first base 2 is provided with a square hole at the top end, and the first lifting seat 3 is inserted into the square hole at the top end of the first base 2; the first base 2 is provided with a first hydraulic cylinder at the inner wall bottom end of the square hole, and the end of the piston rod of the first hydraulic cylinder is connected with the bottom end surface of the first lifting seat 3; the first lifting seat 3 can be vertically lifted by the first hydraulic cylinder, and the height of the work roll falling thereon can be adjusted by controlling the height of the two arc-shaped supporting plates; the first arc-shaped supporting plate 4 is arranged at the top end surface of the first lifting seat 3; the first arc-shaped supporting plate and the second arc-shaped supporting plate respectively lift the roll necks at both ends of the work roll.

[0016] The moving lifting mechanism comprises a sliding plate 5, a second base 6, a second lifting plate 7 and a second arc-shaped supporting plate 8; the long base 1 is provided with a sliding rail on the top end surface in the length direction, and the sliding plate 5 is slidingly arranged on the sliding rail on the top end surface of the long base 1; the sliding plate 5 is provided with a insertion hole, and the top end surface of the long base 1 is provided with a plurality of limiting holes equidistantly arranged in the length direction, the insertion hole is located directly above the limiting hole, and the insertion pin passes through the insertion hole of the sliding plate 5 and the limiting hole of the long base 1 at the same time; the sliding plate 5 can drive the remaining part of the lifting mechanism to move synchronously; the position of the sliding plate 5 can be fixed by the insertion pin, the distance between the two arc-shaped supporting plates can be adjusted by the sliding of the sliding plate 5, so as to adapt to work rolls of different lengths, and ensure that the two arc-shaped supporting plates can smoothly clamp the roll necks at both ends of the work roll; the second base 6 is arranged on the top end surface of the sliding plate 5, and the top end is provided with a square hole, and the second lifting plate 7 is inserted into the square hole at the top end of the second base 6; the second base 6 is provided with a second hydraulic cylinder at the inner wall bottom end of the square hole at the top end, and the end of the piston rod of the second hydraulic cylinder is connected with the bottom end of the second lifting plate 7; the second lifting plate 7 can be vertically lifted by the second hydraulic cylinder, so as to adjust the vertical height of the second arc-shaped supporting plate 8, ensure that the heights of the two arc-shaped supporting plates are consistent, and ensure that the axis of the work roll is horizontal; the second arc-shaped supporting plate 8 is arranged at the top end of the second lifting plate 7.

[0017] The separating part comprises a sliding seat 9, a third hydraulic cylinder 10, a guide plate, a push plate 11 and a lifting piece; the third hydraulic cylinder 10 is provided in two numbers and is arranged on the top end surface of the long base 1, the two third hydraulic cylinders 10 are symmetrically arranged on the two sides of the first base 2, and the axis of the piston rod of the third hydraulic cylinder 10 is parallel to the length direction of the long base 1; the end of the piston rod of the third hydraulic cylinder 10 is connected with the push plate 11; the third hydraulic cylinder 10 can drive the push plate 11 to move away from the long base 1, thereby pushing the bearing seat before the push plate 11 away from the long base 1, so that the bearing seat is away from the work roll; the push plate 11 is arranged on one end of the top end surface of the sliding seat 9 close to the long base 1; the bottom end surface of the sliding seat 9 is provided with walking wheels at four corners; the bearing seat is placed on the sliding seat 9, and when the push plate is away from the long base 1, the bearing seat is also pushed away from the work roll; the end surface of the long base 1 close to the sliding seat 9 is provided with a guide hole, and the guide plate is inserted into the guide hole of the long base 1, and one end of the guide plate is connected with the sliding seat 9; the guide plate ensures that the sliding seat 9 smoothly and reliably moves away from the long base 1; the lifting piece is arranged on the top end surface of the sliding seat 9.

[0018] The lifting piece can provide rocking for the bearing seat in the vertical direction when the center line of the bearing seat deviates from the vertical direction of the work roll axis during the pulling-out process, and the bearing seat can be smoothly pulled out during the rocking process; the lifting piece comprises a fourth hydraulic cylinder, a lifting plate 12, universal balls 13 and guide rods; the top end surface of the sliding seat 9 is provided with a square groove, the fourth hydraulic cylinder is arranged at the center of the square groove on the top end surface of the sliding seat 9, and the end of the piston rod of the fourth hydraulic cylinder is connected with the center of the bottom end surface of the lifting plate 12; the inner wall of the square groove on the top end surface of the sliding seat 9 is provided with a guide hole, and the guide rod is inserted into the guide hole in the inner wall of the square groove on the top end surface of the sliding seat 9, and the top end of the guide rod is connected with the bottom end surface of the lifting plate 12; the top end surface of the lifting plate 12 is provided with a plurality of universal balls 13; the vertical lifting of the lifting plate 12 is driven by the fourth hydraulic cylinder, thereby driving the bearing seat to rock in the vertical direction, and the bearing seat is released from the stuck state in the vertical direction with the work roll; the universal balls 13 can reduce the friction of the bottom end of the bearing seat during the operation of the side pushing part, and ensure that the bearing seat is more easily shaken in the horizontal direction under the action of the side pushing part.

[0019] The side pushing part comprises two side pushing mechanisms, and the two side pushing mechanisms are symmetrically arranged on the two sides of the sliding seat 9 along the width direction of the long base 1; the two side pushing mechanisms respectively push the bearing seat in two opposite directions, and the side pushing mechanism to be used for operation is determined according to the deviation direction of the bearing seat on site.

[0020] The side pushing mechanism comprises a support vertical plate 14, a fifth hydraulic cylinder 15 and a correction plate 16; the support vertical plate 14 is arranged on the side wall of the sliding base 9; the fifth hydraulic cylinder 15 is arranged on the vertical side wall of the support vertical plate 14 away from the sliding base 9, and the piston rod of the fifth hydraulic cylinder 15 penetrates through the side wall of the support vertical plate 14; the side wall of the correction plate 16 is provided with a hinge seat in the center, and the hinge seat is connected with the end of the piston rod of the fifth hydraulic cylinder 15 in a hinged manner; the correction plate 16 swings along the horizontal direction; the fifth hydraulic cylinder 15 pushes the correction plate 16 to move forward, the correction plate 16 pushes the side of the bearing seat, and then drives the bearing seat to move towards the direction of aligning with the working roller shaft center line, so as to facilitate the removal of the bearing seat; the hinge structure of the correction plate 16 enables the correction plate 16 to be in contact with the side wall of the bearing seat on the whole surface, so as to ensure uniform stress and avoid that the correction plate 16 is in contact with the side wall of the bearing seat only on one side, which affects the force effect and service life of the correction plate 16.

[0021] Principle of use: lift the working roller and the body of the bearing seat out of the working position, and then move to the device, adjust the position of the sliding plate 5, so that the distance between the two arc-shaped supporting plates is consistent with the distance between the roll necks of the working roller, and then insert the pin to fix the position of the sliding plate 5; then lower the combination of the working roller and the bearing seat, so that the roll necks at both ends of the working roller are respectively located on different arc-shaped supporting plates; then adjust the first hydraulic cylinder and the second hydraulic cylinder, so that the working roller to be disassembled bearing seat is located on the sliding base 9, and then start the third hydraulic cylinder 10, under the pushing of the pushing plate 11, the bearing seat gradually moves away from the working roller until the bearing seat is removed from the working roller;

[0022] In this process, if the bearing seat is stuck due to the vertical deviation, the fourth hydraulic cylinder is started, the piston rod of the fourth hydraulic cylinder is extended and retracted to drive the bearing seat to rise and shake, so as to remove the stuck state; if the bearing seat is stuck due to the horizontal deviation, the fifth hydraulic cylinder 15 on one side of the deviation is started to push the bearing seat back to the correct position, so as to ensure the smooth removal of the bearing seat.

Claims

1. A bearing housing removal device suitable for rolling mill work rolls, characterized in that: The utility model provides a long strip base (1), lift part, separate part and side push part, the lift part sets up on long strip base (1), the separate part sets up in the length direction one end of long strip base (1), the side push part sets up on separate part, the lift part includes fixed lift mechanism and mobile lift mechanism, the fixed lift mechanism and mobile lift mechanism all set up on long strip base (1).

2. A bearing chock removal device suitable for use with a work roll of a rolling mill as defined in claim 1, characterized in that: The fixed lift mechanism includes first base (2), first lifting seat (3) and first arc-shaped supporting plate (4), one end of the first base (2) is fixedly arranged on the length direction of the upper end surface of the long strip base (1), the top end of the first base (2) is provided with a square hole, and the first lifting seat (3) is inserted into the square hole at the top end of the first base (2), the inner wall bottom end of the square hole of the first base (2) is provided with a first hydraulic cylinder, and the end of the piston rod of the first hydraulic cylinder is connected with the bottom end surface of the first lifting seat (3), and the first arc-shaped supporting plate (4) is arranged on the top end surface of the first lifting seat (3).

3. A bearing chock removal device suitable for use with a work roll of a rolling mill as defined in claim 2, characterized in that: The mobile lift mechanism includes a sliding plate (5), a second base (6), a second lifting plate (7) and a second arc-shaped supporting plate (8), the top end surface of the long strip base (1) is provided with a sliding rail along the length direction thereof, and the sliding plate (5) is slidingly arranged on the sliding rail of the top end surface of the long strip base (1), the sliding plate (5) is provided with a insertion hole, the top end surface of the long strip base (1) is equidistantly provided with a plurality of limiting holes along the length direction thereof, the insertion hole is located directly above the limiting hole, and the insertion pin passes through the insertion hole of the sliding plate (5) and the limiting hole of the long strip base (1) at the same time, the second base (6) is arranged on the top end surface of the sliding plate (5), and the top end of the second base (6) is provided with a square hole, the second lifting plate (7) is inserted into the square hole at the top end of the second base (6), the inner wall bottom end of the square hole at the top end of the second base (6) is provided with a second hydraulic cylinder, and the end of the piston rod of the second hydraulic cylinder is connected with the bottom end of the second lifting plate (7), and the second arc-shaped supporting plate (8) is arranged on the top end of the second lifting plate (7).

4. A bearing chock removal device suitable for use with a work roll of a rolling mill as defined in claim 3, characterized in that: The separate part includes a sliding seat (9), a third hydraulic cylinder (10), a guide plate, a push plate (11) and a lifting member, the number of the third hydraulic cylinder (10) is two, and the third hydraulic cylinder (10) is arranged on the top end surface of the long strip base (1), the two third hydraulic cylinders (10) are symmetrically arranged on both sides of the first base (2), and the axis of the piston rod of the third hydraulic cylinder (10) is parallel to the length direction of the long strip base (1), the end of the piston rod of the third hydraulic cylinder (10) is connected with the push plate (11), the push plate (11) is arranged on one end of the top end surface of the sliding seat (9) close to the long strip base (1), the bottom end surface of the sliding seat (9) is provided with walking wheels at four corners, the end surface of the long strip base (1) close to the sliding seat (9) is provided with a guide hole, the guide plate is inserted into the guide hole of the long strip base (1), and one end of the guide plate is connected with the sliding seat (9), and the lifting member is arranged on the top end surface of the sliding seat (9).

5. A bearing chock removal device suitable for use with a work roll of a rolling mill as defined in claim 4, characterized in that: The lifting piece comprises a fourth hydraulic cylinder, a lifting plate (12), universal balls (13) and a guide rod; the top end surface of the sliding base (9) is provided with a square groove, the fourth hydraulic cylinder is arranged at the center of the square groove at the top end of the sliding base (9), and the end of the piston rod of the fourth hydraulic cylinder is connected with the bottom end surface center of the lifting plate (12); the bottom end of the inner wall of the square groove at the top end of the sliding base (9) is provided with a guide hole, and the guide rod is inserted into the guide hole in the inner wall of the square groove of the sliding base (9), and the top end of the guide rod is connected with the bottom end surface of the lifting plate (12); the top end surface of the lifting plate (12) is provided with a plurality of universal balls (13).

6. A bearing chock removal device suitable for use with a work roll of a rolling mill as defined in claim 5, characterized in that: The side pushing part comprises two side pushing mechanisms, and the two side pushing mechanisms are symmetrically arranged on the two sides of the sliding base (9) along the width direction of the long strip base (1); the side pushing mechanism comprises a supporting vertical plate (14), a fifth hydraulic cylinder (15) and a correction plate (16); the supporting vertical plate (14) is arranged on the side wall of the sliding base (9); the fifth hydraulic cylinder (15) is arranged on the vertical side wall of the supporting vertical plate (14) away from the sliding base (9), and the piston rod of the fifth hydraulic cylinder (15) penetrates through the side wall of the supporting vertical plate (14); the side wall center of the correction plate (16) is provided with a hinged seat, and the hinged seat is hingedly and matchingly connected with the end of the piston rod of the fifth hydraulic cylinder (15); the correction plate (16) swings along the horizontal direction.

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