CN220970376U - Equipment for efficiently replacing working roller and supporting roller of rolling mill - Google Patents

Abstract

The utility model relates to equipment for replacing a roller of a rolling mill, in particular to equipment for efficiently replacing a working roller and a supporting roller of the rolling mill. Comprises a roll changing vehicle, a lifting device, a sliding cover plate and a fixed cover plate; the first rail is fixed on one side of the rolling mill, the roll changing vehicle is connected with a supporting roll of the rolling mill, the first linear driving device drives the roll changing vehicle to run along the first rail, and the roll changing vehicle drags or pushes the supporting roll to drag or push the supporting roll back from the frame; the lifting device is fixed on the roll changing vehicle and connected with the sliding cover plate, the top surface of the sliding cover plate is a plane, and the lifting device drives the sliding cover plate to lift so as to realize a plurality of working positions; the sliding cover plate is connected with the working roll of the rolling mill, the second linear driving device drives the sliding cover plate to move, the sliding cover plate drags or pushes the working roll to pull or push the working roll back from the frame, and the fixed cover plate is used for supporting the sliding cover plate. The structure is compact, the space occupation ratio is small, a transportation channel is reserved, and the working roller and the supporting roller can be independently or simultaneously and efficiently and automatically replaced.

Description

Equipment for efficiently replacing working roller and supporting roller of rolling mill

Technical Field

The utility model relates to equipment for replacing a roller of a rolling mill, in particular to equipment for efficiently replacing a working roller and a supporting roller of the rolling mill.

Background

In metallurgical production, whether cold rolling or hot rolling, various rolls are widely used in production lines and are an important component of rolling mill equipment, such as backup rolls, intermediate rolls, work rolls, etc. The roll diameter of the roll is reduced, the finish is reduced, the quality of a finished product is directly affected due to surface abrasion and rolled piece impact in the steel rolling production process, the roll must be periodically replaced and the roll is repaired in a lower line, the roll is required to be frequently replaced, whether the roll replacing method is convenient to use or not is important, and the production efficiency of the rolling mill is directly affected.

The traditional roll changing method is to push and pull the rolling mill roll through manual work and crane, and because the overall dimension and weight of the roll are large, the traditional roll changing method is time-consuming and labor-consuming and has a certain danger. The roller changing technology at the present stage is to automatically change the roller by the sliding cover plate, the plate of the rolling mill side cap is required to be disassembled, the roller changing space is removed, the roller changing process is increased, and the working efficiency is low. In order to improve efficiency, a roll changing cart is adopted to advance and retreat, a tractor arranged on the cart pulls rolls in the rolling mill, the rolls in the rolling mill are pulled out of the rolling mill, and then the roll changing cart is used for changing the rolls. For a multi-roll mill, a small roll diameter roll is relatively large, if a large roll changing vehicle is used, a large number of roll changing tracks are needed, and time is taken, so that the method is obviously not suitable for roll changing of the multi-roll mill.

Disclosure of utility model

In order to overcome the defects of the prior art, the utility model provides equipment for efficiently replacing a working roll and a supporting roll of a rolling mill. Compact structure, space occupation is little, leaves the transportation passageway, and the automation mechanized operation of being convenient for can change work roll and backing roll alone or simultaneously, and roll change work efficiency is high.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

An apparatus for efficiently replacing a working roll and a supporting roll of a rolling mill comprises a roll changing vehicle, a lifting device, a sliding cover plate and a fixed cover plate; the first rail is fixed on one side of the rolling mill, the roll changing vehicle is connected with a supporting roll of the rolling mill, the first linear driving device drives the roll changing vehicle to run along the first rail, and the roll changing vehicle drags or pushes the supporting roll to drag or push the supporting roll back from the frame; the lifting device is fixed on the roll changing vehicle and connected with the sliding cover plate, the top surface of the sliding cover plate is a plane, and the lifting device drives the sliding cover plate to lift so as to realize a plurality of working positions; the sliding cover plate is connected with the working roll of the rolling mill, the second linear driving device drives the sliding cover plate to move, the sliding cover plate drags or pushes the working roll to pull or push the working roll back from the frame, and the fixed cover plate is used for supporting the sliding cover plate.

Further, the roller changing vehicle body is of a drawer type structure and comprises a bottom frame and a carriage embedded in the bottom frame, running wheels are arranged on two sides of the carriage, and the running wheels run along a first track; the carriage is connected with the backing roll, and a first linear driving device links to each other with the carriage, and first linear driving device pulls out or push back the carriage in from the underframe, pulls the backing roll from the frame to the underframe or pushes back the frame.

Further, the first track is a groove track.

Further, the carriage is connected with the supporting roller through the hook in a meshed mode.

Further, the locking device is fixedly connected to the carriage and comprises a locking hydraulic cylinder and a pin shaft fixedly connected to a piston rod of the locking hydraulic cylinder, and the piston rod stretches out to drive the pin shaft to be inserted into the pin hole of the first track, so that locking is realized.

Further, the lifting device comprises lifting hydraulic cylinders and guide mechanisms, wherein the lifting hydraulic cylinders and the guide mechanisms are installed at four corners of a roll changing vehicle body in a staggered mode, and the tops of the lifting hydraulic cylinders and the guide mechanisms are connected with the sliding cover plate.

Further, the guide mechanism comprises a guide sleeve and a guide rod, the guide sleeve is fixedly connected to the roll changing vehicle body, the guide rod is sleeved with the guide sleeve, and the top of the guide rod is connected with the sliding cover plate.

Further, the sliding cover plate is of a drawer type structure and comprises a bottom bracket and a trolley embedded in the bottom bracket, the bottom of the trolley is provided with travelling casters, guide wheels are arranged on two sides of the trolley, and the guide wheels travel along a second track fixedly connected with the bottom bracket; the trolley body is connected with the working roller, the second linear driving device is connected with the trolley body, and the second linear driving device pulls the trolley from the bottom bracket to the fixed cover plate or pushes the trolley back, and pulls the working roller from the frame to the bottom bracket or pushes the working roller back to the frame.

Further, the second track is a groove track.

Further, the first linear driving device and the second linear driving device are hydraulic cylinders.

Compared with the prior art, the utility model has the beneficial effects that:

1. The sliding cover plate and the lifting device are sequentially arranged on the roll changing vehicle from top to bottom, are arranged layer by layer from top to bottom, and have a compact structure and small space occupation ratio. The second linear driving device drives the sliding cover plate to drag the paired old working rolls from the frame, and pushes the paired new working rolls into the frame, the first linear driving device drives the roll changing truck to drag the paired old supporting rolls from the frame, and pushes the paired new supporting rolls into the frame, the roll changing process is completed, the roll changing process is few, the rolling mill side cover plate is not required to be detached, a transportation channel is reserved, the whole process can be controlled automatically by hydraulic pressure, the operation is convenient, and the roll changing efficiency is greatly improved.

The lifting device drives the sliding cover plate to lift, so that a plurality of working positions are realized, the highest point is the working position for changing the working rolls, the middle position is the working position for changing the supporting rolls during rolling of the rolling mill, the lowest point is the working position for changing the supporting rolls, not only can the working rolls and the supporting rolls be independently or simultaneously replaced, but also the working position for changing the working rolls during rolling of the rolling mill is arranged, and a conveying channel and an operation maintenance space are reserved during rolling mill production.

2. According to the utility model, the roller changing trolley and the sliding cover plate are both in drawer type structures, and the upper trolley drags the rollers to be placed on the lower bracket, so that the structure is further compact, and the space is further saved.

3. The roller changing vehicle and the sliding cover plate are both provided with the groove-shaped rails, and the groove-shaped rails are beneficial to generating a larger force arm when the vehicle body moves to a terminal point so as to enable the vehicle body to tilt and prevent tipping.

4. The utility model is provided with the locking device, so that the roll changing vehicle and the sliding cover plate can be locked and stopped at a precise position when the roll changing vehicle and the sliding cover plate are at an origin and a destination.

5. The roll changing vehicle and the sliding cover plate are connected with the roll in a meshed manner through the hooks, so that automatic meshing is realized, and the connection is stable.

6. The utility model is provided with the guide mechanism, so that the accurate and stable lifting of the sliding cover plate is ensured.

7. The utility model is provided with the fixed cover plate, so that a material pouring traveling channel and an operation and maintenance space of the transport trolley during production can be provided, and the support for traveling of the sliding cover plate can be provided.

Drawings

Fig. 1 is a schematic front view of the structure of the daily state of the present utility model.

Fig. 2 is a schematic side view of the structure of the present utility model in a daily state.

Fig. 3 is a schematic front view showing a state structure before changing a work roll according to the present utility model.

Fig. 4 is a schematic side view of the construction of the work roll of the present utility model in a pre-roll change condition.

Fig. 5 is a schematic front view showing the construction of the end state of roll change of the work roll of the present utility model.

Fig. 6 is a schematic side view of the construction of the end state of the roll change of the work roll of the present utility model.

Fig. 7 is a schematic front view showing a state structure before the back-up roll is changed.

Fig. 8 is a schematic side view showing the structure of the back-up roll of the present utility model in a state before roll change.

Fig. 9 is a schematic front view showing a roll change end state structure of the backup roll of the present utility model.

Fig. 10 is a schematic side view of the end state structure of the back-up roll of the present utility model.

In the figure: 1-roll changing truck 2-lifting device 3-fixed cover plate 5-fixed cover plate 6-second hydraulic cylinder 7-working roll 8-supporting roll 9-frame 11-first groove type track 12-running wheel 13-underframe 14-carriage 15-pin hole 16-locking hydraulic cylinder 17-pin shaft 18-first hook 19-second hook 21-lifting hydraulic cylinder 22-guide sleeve 23-guide rod 31-bottom bracket 32-trolley 33-running castor 34-guide rail 35-second groove type track 36-third hook 37-fourth hook

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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.

[ Example ]

As shown in figures 1-10, the equipment for efficiently replacing the working rolls and the supporting rolls of the rolling mill comprises a roll changing vehicle 1, a lifting device 2, a sliding cover plate 3, a fixed cover plate 4, a first hydraulic cylinder 5 and a second hydraulic cylinder 6.

The roll changing truck 1 comprises a truck body, a first groove type track 11, a running wheel 12, a locking device, a first hook 18 and a second hook 19. The first grooved rail 11 is installed on the civil engineering basis of the operating side of the rolling mill, and the first grooved rail 11 is provided with a pin hole 15 for locking and positioning. The automobile body is drawer type structure, includes underframe 13 and the carriage 14 of embedded in the underframe, and running wheel 12 installs in the both sides face of carriage 14, and running wheel 12 installs in the recess of first groove type track 11, and running wheel 12 is followed first groove type track 11 and is gone. The first groove-shaped track 11 is beneficial to generating a larger force arm to enable the roll changing truck 1 to tilt when walking to a terminal point, and is anti-tipping.

The first hook 18 is fixedly connected to the front end of the carriage 14, a lifting lug is arranged at the lower part of the carriage 14, the second hook 19 is fixedly connected to a bearing seat of the supporting roller 8, and the first hook 18 is in meshed connection with the second hook 19 so as to connect the carriage 14 of the roll changing vehicle 1 with the supporting roller 8.

The cylinder body of the first hydraulic cylinder 5 is hinged on the civil engineering foundation right below the roller changing vehicle 1, the piston rod of the first hydraulic cylinder 5 is hinged with the bottom of the carriage 14, the piston rod of the first hydraulic cylinder 5 stretches and shortens to drive the running wheel 12 to run along the groove-shaped track 11 to drive the carriage 14 to move, the carriage 14 is pulled out or pushed back from the bottom frame 13, and the supporting roller 8 is pulled onto the bottom frame 13 or pushed back from the frame 9.

The locking device is fixedly connected to the top surface of the carriage 14 and is positioned at two sides. The locking device comprises a locking hydraulic cylinder 16 and a pin shaft 17 fixedly connected to a piston rod of the locking hydraulic cylinder, and the piston rod stretches out to drive the pin shaft 17 to be inserted into the pin hole 15, so that locking is realized. The locking device enables the roll changing truck 1 to accurately lock and stop at a set position at the origin and the destination. The locking device ensures that the first hydraulic cylinder 5 cannot slide, ensures that the origin of the roll changing truck 1 is accurate, is beneficial to the smooth lifting/falling of the lifting track, and ensures that the first hook 18 and the second hook 19 are freely connected.

The sliding cover plate 3 has a drawer type structure and comprises a bottom bracket 31 and a trolley 32 embedded in the bottom bracket. The bottom of the trolley is provided with travelling casters 33, both sides of the trolley are provided with guide wheels 34, the guide wheels 34 travel along a second groove-shaped rail 35 fixedly connected to the bottom bracket, and the guide wheels 34 are arranged in grooves of the second groove-shaped rail 35.

The third hook 36 is fixedly connected to the front end of the trolley 32, a lifting lug is arranged at the lower part of the trolley, the fourth hook 37 is fixedly connected to the bearing seat of the working roller 7, and the third hook 36 is in meshed connection with the fourth hook 37 so as to connect the trolley 32 with the working roller 7.

The cylinder body of the second hydraulic cylinder 6 is hinged on the bottom bracket 31, the piston rod of the second hydraulic cylinder 6 is hinged with the bottom of the trolley 32, the piston rod of the second hydraulic cylinder 6 stretches to drive the guide wheel 34 to run along the second groove-shaped track 35, the running castor 33 is driven to run on the fixed cover plate 4, the trolley 32 is pulled out of the bottom bracket 31 and moves onto the fixed cover plate 4, and the working roll 7 is pulled onto the bottom bracket 31 from the frame 9. Whereas the piston rod of the second hydraulic cylinder 6 shortens, pushing the work roll 7 back to the frame 9.

The fixed cover plate 4 is a rectangular fixed cover plate formed by welding profile steel and plates, is positioned above the rear part of the roll changing truck 1, is fixedly connected to the top of a civil engineering foundation wall, and a storage space for the roll changing truck 1, the lifting device 2 and the sliding cover plate 3 is reserved at the bottom of the fixed cover plate 4. The fixed cover plate 4 can provide a pouring travelling channel and an operation maintenance space for the transport trolley in the production workshop, and a thickened steel plate belt is welded on the upper part for the trolley 32 to travel on.

The lifting device 2 comprises a lifting hydraulic cylinder 21 and a guide mechanism, wherein the lifting hydraulic cylinder 21 and the guide mechanism are installed at four corners of a roll changing truck body in a staggered manner, and the top of the lifting hydraulic cylinder 21 and the top of the guide mechanism are connected with the sliding cover plate 3. The guide mechanism comprises a guide sleeve 22 and a guide rod 23, wherein the guide sleeve 22 is fixedly connected to the body of the roll changing vehicle 1, the guide rod 23 is sleeved with the guide sleeve 22, and the top of the guide rod 23 is connected with the bottom surface of a bottom bracket 31 of the sliding cover plate 3. The lifting hydraulic cylinder 21 stretches out and draws back to drive the sliding cover plate 3 to lift, and the guiding mechanism ensures that the sliding cover plate 3 accurately and stably lifts.

The lifting hydraulic cylinder 21 stretches and contracts to drive the sliding cover plate 3 to lift, so that a plurality of working positions are realized, namely three working positions, namely a lowest position, a middle position and a highest position. As shown in fig. 1 and 2, when the sliding cover plate 3 is in the middle position, the upper plane of the sliding cover plate 3 is flush with the upper plane of the fixed cover plate 4. As shown in fig. 3-6, the sliding cover 3 is in its highest position and the running casters 33 of the sliding cover 3 are able to run on the fixed cover 4. As shown in fig. 7-10, when the sliding cover 3 is at the lowest position, the upper plane of the sliding cover 3 is lower than the lower plane of the fixed cover 4.

The working principle and working process of the utility model are as follows:

1) As shown in fig. 1 and 2, the roll changing carriage 1 is at the origin of travel when the rolling mill is in a daily state. The piston rod of the locking device stretches out to drive the pin shaft 17 to be inserted into the pin hole 15 of the first groove type track 11, and the roll changing truck 1 is locked and fixed.

The sliding cover plate 3 is positioned at the middle position, the trolley 32 is embedded in the bottom bracket 31, and the upper plane of the sliding cover plate 3 is flush with the upper plane of the fixed cover plate 4. The fixed cover plate 4 can provide a pouring travelling channel and an operation maintenance space for the transportation trolley in the production workshop.

2) When the rolls need to be replaced, the rolling mill is stopped, the old work rolls 7 are removed from the rolling mill stand 9, and the old backup rolls 8 are removed from the rolling mill stand 9.

3) As shown in fig. 3 to 6, the work roll 7 is replaced first, and the work roll 7 is in a roll replacement state. The sliding cover plate 3 is driven to ascend by the lifting device 2, the sliding cover plate 3 ascends to the highest position from the middle position, the third hook 36 at the front end of the trolley 32 body is automatically in meshed connection with the fourth hook 37 on the bearing seat of the working roller 7, and the trolley 32 is further connected with the working roller 7.

The piston rod of the second hydraulic cylinder 6 stretches to drive the guide wheel 34 to run along the second groove-shaped track 35, drives the running castor 33 to run on the fixed cover plate 4, pulls the trolley 32 out of the bottom bracket 31, moves the trolley onto the fixed cover plate 4, pulls the working roll 7 from the frame 9 to the position above the bottom bracket 31 to a designated position, and lifts away the old working roll 7.

4) As shown in fig. 7 to 10, the backup roll 8 is replaced, and the backup roll 8 is in a roll replacement state. The sliding cover plate 3 is driven to descend by the lifting device 2, and the sliding cover plate 3 descends from the highest position to the lowest position.

The first hook 18 fixedly connected to the front end of the carriage 14 is automatically connected with the second hook 19 fixedly connected to the bearing seat of the supporting roller 8 in a 'snap' manner, so that the carriage 14 of the roller changing vehicle 1 is connected with the supporting roller 8. The piston rod of the locking device retracts to drive the pin shaft 17 to retract, and the pin shaft leaves the pin hole 15 of the first groove-shaped track 11, so that the locking of the roller changing vehicle 1 is released.

The piston rod of the first hydraulic cylinder 5 stretches to drive the running wheel 12 to move along the groove-shaped track 11 to drive the carriage 14 to move, the carriage 14 is pulled out of the bottom frame 13, the supporting roller 8 is pulled to a designated position on the bottom frame 13 from the frame 9, the carrier roller car 1 is locked at a final position through the locking device, and the old supporting roller 8 is lifted away.

5) A new backup roll 8 is installed in the same manner and a new work roll 7 is installed. The new supporting roller 8 is lifted to the roller changing truck 1, and the piston rod of the first hydraulic cylinder 5 is shortened to push the new supporting roller 8 to the frame. And lifting the new working roller 7 to the sliding cover plate 3, shortening the piston rod of the second hydraulic cylinder 6, pushing the new working roller 7 to the frame 9, and finishing the roller changing process. The utility model has less roll changing process, no need of disassembling the side cover plate of the rolling mill, and a transportation channel is reserved, and the whole process can be controlled automatically by hydraulic pressure, thereby being convenient to operate and greatly improving the roll changing efficiency.

The utility model has compact structure, small space occupation ratio, reserved transportation channel, convenient automation operation, and high roll changing efficiency, and can independently or simultaneously change the working roll and the supporting roll.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (10)

1. An equipment of high-efficient change rolling mill work roll and backing roll, its characterized in that:

Comprises a roll changing vehicle, a lifting device, a sliding cover plate and a fixed cover plate;

The first rail is fixed on one side of the rolling mill, the roll changing vehicle is connected with a supporting roll of the rolling mill, the first linear driving device drives the roll changing vehicle to run along the first rail, and the roll changing vehicle drags or pushes the supporting roll to drag or push the supporting roll back from the frame;

The lifting device is fixed on the roll changing vehicle and connected with the sliding cover plate, the top surface of the sliding cover plate is a plane, and the lifting device drives the sliding cover plate to lift so as to realize a plurality of working positions;

The sliding cover plate is connected with the working roll of the rolling mill, the second linear driving device drives the sliding cover plate to move, the sliding cover plate drags or pushes the working roll to pull or push the working roll back from the frame, and the fixed cover plate is used for supporting the sliding cover plate.

2. The apparatus for efficiently replacing a work roll and a backup roll of a rolling mill according to claim 1, wherein:

The roller changing vehicle comprises a vehicle body, a roller changing vehicle and a roller changing vehicle, wherein the vehicle body is of a drawer type structure and comprises a bottom frame and a carriage embedded in the bottom frame, running wheels are arranged on two sides of the carriage, and the running wheels run along a first track;

The carriage is connected with the backing roll, and a first linear driving device links to each other with the carriage, and first linear driving device pulls out or push back the carriage in from the underframe, pulls the backing roll from the frame to the underframe or pushes back the frame.

3. The apparatus for efficiently replacing a work roll and a backup roll of a rolling mill according to claim 2, wherein:

the first track is a groove-shaped track.

4. The apparatus for efficiently replacing a work roll and a backup roll of a rolling mill according to claim 2, wherein:

The carriage is connected with the supporting roller through the hook in a meshed mode.

5. The apparatus for efficiently replacing a work roll and a backup roll of a rolling mill according to claim 2, wherein:

The locking device is fixedly connected to the carriage and comprises a locking hydraulic cylinder and a pin shaft fixedly connected to a piston rod of the locking hydraulic cylinder, and the piston rod stretches out to drive the pin shaft to be inserted into the pin hole of the first track, so that locking is realized.

6. The apparatus for efficiently replacing a work roll and a backup roll of a rolling mill according to claim 1, wherein:

The lifting device comprises lifting hydraulic cylinders and guide mechanisms, wherein the lifting hydraulic cylinders and the guide mechanisms are installed at four corners of a roll changing vehicle body in a staggered mode, and the tops of the lifting hydraulic cylinders and the guide mechanisms are connected with the sliding cover plate.

7. The apparatus for efficiently replacing a work roll and a backup roll of a rolling mill of claim 6, wherein:

The guide mechanism comprises a guide sleeve and a guide rod, the guide sleeve is fixedly connected to the roll changing vehicle body, the guide rod is sleeved with the guide sleeve, and the top of the guide rod is connected with the sliding cover plate.

8. The apparatus for efficiently replacing a work roll and a backup roll of a rolling mill according to claim 1, wherein:

The sliding cover plate is of a drawer type structure and comprises a bottom bracket and a trolley embedded in the bottom bracket, wherein running casters are arranged at the bottom of the trolley, guide wheels are arranged on two sides of the trolley, and the guide wheels run along a second track fixedly connected with the bottom bracket;

The trolley body is connected with the working roller, the second linear driving device is connected with the trolley body, and the second linear driving device pulls the trolley from the bottom bracket to the fixed cover plate or pushes the trolley back, and pulls the working roller from the frame to the bottom bracket or pushes the working roller back to the frame.

9. The apparatus for efficiently replacing a work roll and a backup roll of a rolling mill of claim 8, wherein:

The second track is a groove-shaped track.

10. The apparatus for efficiently replacing a work roll and a backup roll of a rolling mill according to claim 1, wherein:

The first linear driving device and the second linear driving device are hydraulic cylinders.