CN220717213U - Roll changing device - Google Patents

Abstract

The utility model discloses a roll changing device which comprises a support roll changing assembly, wherein the support roll changing assembly comprises an oil cylinder, a track structure and a connecting part connected to the oil cylinder and used for connecting a support roll, a connecting rod perpendicular to the stroke direction of the oil cylinder is fixed on the connecting part, and wheels capable of being arranged on the track structure are rotatably connected to two ends of the connecting rod. A connecting rod is arranged on a connecting part on the oil cylinder, and wheels capable of moving along the rail structure are arranged on the connecting rod, so that the end part of the oil cylinder is limited by moving the wheels, and the moving stability of the support roller during roller changing is improved.

Description

Roll changing device

Technical Field

The utility model relates to the technical field of roll changing devices, in particular to a roll changing device of a four-high rolling mill.

Background

In the roll changing operation of the four-high mill, a roll changing device is used to assist roll changing. The roll changing device comprises a working roll changing assembly and a supporting roll changing assembly.

The conventional work roll changing assembly, as shown in fig. 7, includes a first work roll rail 11, a second work roll rail 12 detachably connected to one end of the first work roll rail 11, and a bracket 13 for supporting the second work roll rail 12. The brackets of the work roll change assembly are bolted to the support rails 14. The first work roll track 11 is mounted inside the housing of the work roll 32.

The conventional back-up roll changing assembly is shown in fig. 8, and comprises an oil cylinder 21 and a track 22, wherein the oil cylinder is fixedly arranged on an oil cylinder seat, and one end of the oil cylinder is connected with a back-up roll 31 through a pin shaft.

Adopt current backing roll replacement subassembly, it has following problem: because the oil cylinder is a large-stroke oil cylinder, the oil cylinder has the problem of instability in control.

Disclosure of Invention

The utility model aims to overcome the defect that an oil cylinder of the existing supporting roller changing assembly is a large-stroke oil cylinder and has driving instability, and provides a roller changing device which can improve the moving stability of a supporting roller during roller changing.

The aim of the utility model is achieved by the following technical scheme:

the utility model provides a roll changing device, which comprises a supporting roll changing assembly, wherein the supporting roll changing assembly comprises an oil cylinder, a track structure and a connecting part connected to the oil cylinder and used for connecting a supporting roll,

the connecting part is fixedly provided with a connecting rod which is perpendicular to the stroke direction of the oil cylinder, and two ends of the connecting rod are rotatably connected with wheels which can be arranged on the track structure.

In one possible design, the end face of the connecting rod is provided with a fixing hole, a rotating shaft is detachably fixed in the fixing hole, and the wheel is sleeved on the rotating shaft through a bushing.

In one possible design, the track structure includes a first track, a second track parallel to the first track, at least three connecting rods connected between the first track and the second track, and fixing lugs arranged at two ends of the connecting rods, wherein the distance between the first track and the second track is equal to the distance between wheels at two ends of the connecting rods.

In one possible design, the device further comprises a work roll changing assembly, wherein the work roll changing assembly comprises a first work roll track, a second work roll track detachably connected to one end of the first work roll track, and a bracket for supporting the second work roll track.

In one possible design, the device further comprises a working roll changing assembly, wherein the working roll changing assembly comprises a working roll track, a moving trolley which is arranged on the working roll track and can move along the track structure, and a locking structure for locking the moving trolley and the track structure.

In one possible design, the work roll track comprises a support section connected to the travelling trolley and a snap-in section for snapping in the work roll to be replaced.

In one possible design, the locking structure is a locking bar with two ends detachably connected between the travelling car and the track structure.

In one possible design, the locking lever is L-shaped, one end of the locking lever is fixed on the travelling car, and the other end of the locking lever is provided with a first locking hole.

The utility model has the following advantages:

according to the scheme, the connecting rod is arranged on the connecting part of the oil cylinder, the connecting rod can move along the track structure through the wheels, the end part of the oil cylinder is limited by moving the wheels, and the moving stability of the support roller during roller changing is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a side view of a backup roll change assembly of the present utility model;

FIG. 2 is a schematic view of a cylinder according to the present utility model;

FIG. 3 is view A-A of FIG. 2;

FIG. 4 is a schematic view of the track structure and backup roll installation of the present utility model;

FIG. 5 is a top view of the track structure of the present utility model;

FIG. 6 is a schematic installation view of a work roll change assembly of the present utility model;

FIG. 7 is a schematic view of a prior art work roll change assembly;

fig. 8 is a schematic view of a conventional backup roll changing assembly.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model discloses a roll changing device which comprises a supporting roll changing assembly and a working roll changing assembly, wherein the supporting roll changing assembly and the working roll changing assembly are matched to realize roll changing of a supporting roll and a working roll.

As shown in fig. 1, the roller changing assembly of the support roller comprises an oil cylinder 21, a track structure 22 and a connecting part 23 connected to the oil cylinder 21 and used for connecting the support roller 31, wherein the connecting mode between the connecting part 23 and the support roller can be realized by adopting the existing structure. The connecting part 23 is fixedly provided with a connecting rod 25 which is perpendicular to the stroke direction of the oil cylinder, the connecting rod is symmetrically arranged at two sides of the connecting part 23, and two ends of the connecting rod 25 are rotatably connected with wheels 24 which can be arranged on a track structure.

By adopting the structure, the wheels are arranged at the two ends of the connecting part 23, and when the oil cylinder drives the supporting roller to move, the wheels move along the track structure, so that the limit of the end part driving of the oil cylinder is realized, the stability of the driving movement of the oil cylinder with a large range is improved, namely the stability of the movement of the supporting roller is improved.

Because the supporting roller is heavy in weight, the wheels are easy-to-wear parts, and in order to improve the utilization rate of the assembly, the wheels are convenient to replace, as shown in fig. 3, the end face of the connecting rod is provided with a fixing hole, a rotating shaft 26 is detachably fixed in the fixing hole, and the wheels 24 are sleeved on the rotating shaft 26 through a bushing 27.

The structure of the existing track structure is unstable, and is further improved on the basis of any one of the structures, namely, as shown in fig. 4 and 5, the track structure comprises a first track 223, a second track 224 which is parallel to the first track, at least three connecting rods 222 connected between the first track and the second track, and fixing lugs 221 arranged at two ends of the connecting rods, wherein the distance between the first track and the second track is equal to the distance between wheels at two ends of the connecting rods. By adopting the structure, the structure stability is enhanced by connecting a plurality of connecting rods between two rails, and the fixing lugs can realize rail fixation through the structures such as foundation bolts, gaskets, nuts and the like.

The work roll changing assembly can be realized by adopting various structures.

Example 1: the device is the same as the prior art, namely comprises a first working roller track, a second working roller track detachably connected to one end of the first working roller track, and a bracket for supporting the second working roller track. See structures disclosed in the background.

Example 2: as shown in fig. 6, the work roll changing assembly includes a work roll rail 41, a traveling carriage 43 provided on the work roll rail to be movable along the rail structure, and a locking structure 44 for locking the traveling carriage and the rail structure. The first working roll rail of the working roll changing assembly in example 1 is installed inside the housing, and is inconvenient to disassemble, and in this regard, the working roll rail is further improved on the basis of the structure in example 2, that is, the working roll rail includes a supporting section 41 connected with the moving trolley and a clamping section 42 for clamping the working roll to be changed. The working roller track is optimized to be an integral part, and the fixing can be realized through the fixed moving trolley, so that the dismounting time is reduced.

The locking structure 44 is a locking bar with two ends detachably connected between the travelling car and the track structure. Specifically, for convenience of operation, the locking lever may be provided in an L-shaped structure, one end of which is fixed to the traveling carriage, and the other end of which is provided with a first locking hole. And a second locking hole is formed in a corresponding position of the track structure, and after the mobile trolley moves in place, the clamping section 42 is clamped under the working roll to be replaced, and the pin is directly inserted into the first locking hole and the second locking hole to realize locking.

The working roll changing assembly in the example 2 is convenient to detach, and the disassembly and assembly time is greatly reduced.

When the working roll changing assembly in example 2 is adopted, during roll changing, the movable trolley 43 is directly pushed onto the track structure of the supporting roll, after the trolley wheel belt bearing walks to the position, the clamping section is clamped into the working roll to be in place, and after pins are directly inserted into the first locking hole and the second locking hole, so that the movable trolley 43 and the track structure are locked, and the roll changing operation of the working roll can be performed.

When the back-up rolls are replaced, the work roll changing assembly is removed, the upper supporting roll is jacked up by hydraulic balance, the rolling line adjusting device at the bottom of the frame is driven, four wheels on the bearing seat of the lower supporting roll are fallen on the track structure, the supporting roll is loosened to axially lock the pressing plate, the supporting plate of the roll changing bracket is used for supporting the connecting shaft of the universal coupling, and the holding frame is used for holding the universal coupling. The back-up roll changing assembly connecting portion is connected to the lower back-up roll, the cylinder is pushed out to pull the lower back-up roll out of the frame, put the upper back-up roll frame, then push into the frame, the pin roll of this frame is connected with bearing block of the back-up roll system, the frame contacts with both ends inclined plane of the bearing block of the back-up roll, make the back-up roll position easy, contact steady, the upper back-up roll falls on the frame of changing the roll, at this moment, the cylinder can pull the upper back-up roll out of the frame together with the lower back-up roll.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. The utility model provides a roll changing device, includes backing roll-changing subassembly, backing roll-changing subassembly include hydro-cylinder, track structure and connect in be used for connecting the connecting portion of backing roll on the hydro-cylinder, its characterized in that:

the connecting part is fixedly provided with a connecting rod which is perpendicular to the stroke direction of the oil cylinder, and two ends of the connecting rod are rotatably connected with wheels which can be arranged on a track structure;

the track structure comprises a first track, a second track, at least three connecting rods and fixing lugs, wherein the second track is arranged in parallel with the first track, the connecting rods are connected between the first track and the second track, the fixing lugs are arranged at two ends of the connecting rods, and the distance between the first track and the second track is equal to the distance between wheels at two ends of the connecting rods.

2. A roll changing device according to claim 1, characterized in that: the connecting rod terminal surface is provided with the fixed orifices, can dismantle in the fixed orifices and be fixed with the pivot, the wheel passes through the bush cover and establishes in the pivot.

3. The roll changing apparatus of claim 1 further comprising a work roll changing assembly comprising a first work roll rail, a second work roll rail removably attached to one end of the first work roll rail, and a bracket for supporting the second work roll rail.

4. A roll changing device according to claim 1, characterized in that: the device comprises a working roll, a working roll changing assembly, a working roll rotating mechanism and a working roll rotating mechanism, wherein the working roll changing assembly comprises a working roll track, a moving trolley which is arranged on the working roll track and can move along the track structure, and a locking structure for locking the moving trolley and the track structure.

5. A roll changing apparatus according to claim 4, wherein: the working roll track comprises a supporting section connected with the mobile trolley and a clamping section used for clamping the working roll to be replaced.

6. A roll changing apparatus according to claim 4, wherein: the locking structure is a locking rod with two ends detachably connected between the movable trolley and the track structure.

7. A roll changing apparatus according to claim 6, wherein: the locking rod is L-shaped, one end of the locking rod is fixed on the movable trolley, and a first locking hole is formed in the other end of the locking rod.