CN212733571U - Replacement system of rolling mill supporting roll - Google Patents
Replacement system of rolling mill supporting roll Download PDFInfo
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- CN212733571U CN212733571U CN202020688122.5U CN202020688122U CN212733571U CN 212733571 U CN212733571 U CN 212733571U CN 202020688122 U CN202020688122 U CN 202020688122U CN 212733571 U CN212733571 U CN 212733571U
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Abstract
The utility model protects a replacement system of a rolling mill supporting roll, which is arranged on a rolling mill track on a line trolley, so that the line trolley is positioned under the lower supporting roll, the line trolley is positioned under a roll system in a normal state, namely is positioned in the rolling mill body for a long time, and the huge space occupied by the line trolley is overlapped with the space of the rolling mill body, thereby saving a large amount of space and having extremely compact structure; the roll changing track connected with the rolling mill track is laid in a pit hole outside the rolling mill, the off-line vehicle is arranged on the roll changing track, the top of the off-line vehicle is hinged to the end of the safe operation platform, the safe operation platform covers the pit hole and is suspended at the bottom of the roll changing vehicle in a sliding mode, the roll changing vehicle is a working roll changing vehicle or an intermediate roll changing vehicle, the working roll changing vehicle or the intermediate roll changing vehicle is used as a driving device, the safe operation platform and the like are dragged to move, an independent driving device is not configured, the driving device of a supporting roll changing system and corresponding hydraulic components are prevented from being idle for a long time, and energy conservation is effectively achieved.
Description
Technical Field
The utility model belongs to the rolling mill roll change field, concretely relates to change system of rolling mill backing roll, specially adapted aluminum rolling mill.
Background
With the wide application of aluminum materials in the fields of national defense, military industry, household appliances and microelectronics, the research on an aluminum strip rolling mill and related parts thereof is increasingly emphasized, and due to the special material characteristics of aluminum, the equipment characteristics and the processing technology of the aluminum strip rolling mill are different from those of a conventional steel strip rolling mill, for example, the aluminum strip rolling mill is one of the most core parts of the aluminum strip rolling mill, and the important characteristics of a support roll replacing system are low speed and heavy load, huge volume and low use frequency.
The traditional aluminum rolling mill support roll changing system is very similar to the steel rolling mill support roll changing system, in the rolling state, all equipment is positioned outside the rolling mill, the support roll changing system and a safe operation platform thereof have no connection relation and are respectively provided with an independent driving device and a complex execution mechanism, and the support roll changing system of the type exposes the following serious problems in actual production and application because the characteristics of an aluminum strip rolling mill are not fully considered:
(1) large occupied space
Because the aluminum strip rolling mill needs a large rigid supporting roll to meet the requirements of the plate type and the plate thickness of a product, the corresponding supporting roll replacing system is generally large in volume, but the traditional supporting roll replacing system of the aluminum strip rolling mill is positioned outside the rolling mill for a long time, so that the system occupies a huge floor space in the roll replacing direction;
the traditional support roller replacing system is generally driven by a long-stroke oil cylinder and enables the long-stroke oil cylinder to be close to or far away from a rolling mill, so that the occupied space of the support roller replacing system in the direction is further increased, and due to the layout, not only is the huge occupied space wasted, but also the corresponding civil engineering construction amount is very large.
(2) Waste of energy
Compared with the three-time-per-day use frequency of a work roll changing system and a middle roll changing system of an aluminum rolling mill, the use frequency of the back-up roll changing system is very low, because the roll surface of the back-up roll is not in direct contact with an aluminum strip, the back-up roll changing system only needs to perform roll changing operation once every month, and therefore a long-stroke oil cylinder of the back-up roll changing system of the traditional aluminum rolling mill is in an idle state for a long time, hydraulic components and corresponding pipelines configured for the oil cylinder cannot fully play a role for a long time, and great energy waste is caused.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a change system of rolling mill backing roll to overcome above-mentioned technical defect.
In order to solve the technical problem, the utility model provides a replacement system of a supporting roll of a rolling mill, which comprises a safe operating platform which is arranged outside the rolling mill and can cover a pit hole outside the rolling mill, wherein the safe operating platform is suspended at the bottom of a roll changing vehicle in a sliding way, and the roll changing vehicle is a working roll changing vehicle or a middle roll changing vehicle;
the end part of the safe operation platform close to the rolling mill is hinged with an off-line vehicle, a roll changing track which is laid on a civil engineering foundation and is connected with a rolling mill track is arranged below the off-line vehicle, the on-line vehicle is arranged on the roll changing track in a sliding manner, when the on-line vehicle drives away from the roll changing track and slides into the rolling mill track, the on-line vehicle is positioned right below a lower supporting roll of the rolling mill, and a main hydraulic cylinder or a rolling line adjusting device of the rolling mill can pass through the on-line vehicle and extend out of contact with the lower supporting roll or retract to be separated from the lower supporting.
Furthermore, the online vehicle is a trolley positioned in the rolling mill production line, the online vehicle is of a hollow frame structure, two online vehicles are arranged, and the two online vehicles are connected through a connecting frame into an integrated structure capable of moving on the roll changing track or the rolling mill track at the same speed.
Preferably, two taper pins B are symmetrically arranged on the frame of each online vehicle, the two taper pins B are symmetrically distributed about the center line of the length direction of the roll changing track or the center line of the length direction of the rolling mill track, the connecting line of the two taper pins B is perpendicular to the roll changing track or the rolling mill track, the diameter of each taper pin B is 75-80 mm, and the length of each taper pin B is 350-360 mm.
Furthermore, the online vehicle is spliced with a bearing seat of the lower supporting roller through a taper pin B, the bearing seat of the lower supporting roller is provided with a hole for inserting the taper pin B, and the radial clearance between the hole and the taper pin B is 1-1.5 mm.
Preferably, the off-line trolley refers to a trolley located outside the production line of the rolling mill, one end of the trolley extends vertically upwards and is hinged with the end part of the safe operation platform, and the other section of the trolley is detachably connected with the on-line trolley through a fastener.
Furthermore, the roll changing support comprises a rectangular vertical plate, four corners of the vertical plate are fixedly connected with a supporting plate respectively, two cylindrical pins C are arranged on each supporting plate and are symmetrically distributed relative to the vertical plate, the diameter of each cylindrical pin C ranges from 80mm to 85mm, and the length of each cylindrical pin C ranges from 30mm to 40 mm.
Preferably, the roll changing support is spliced with a bearing seat of the (old) upper supporting roll 8 through two cylindrical pins C above the vertical plate, the two cylindrical pins C below the vertical plate are spliced with a bearing seat of the lower supporting roll, each bearing seat is provided with a hole for inserting the cylindrical pin C, and the radial clearance between the hole and the cylindrical pin C is 0.1-0.5 mm.
Furthermore, a connecting hole A used for being connected with the roll changing trolley is formed in the end portion of the safe operation platform, and the connecting hole A is located right above the off-line trolley.
Preferably, the roll change track is fixed on the civil engineering foundation, and the elevation and the section of the roll change track are consistent with those of the rolling mill track.
The utility model has the advantages as follows:
(1) the working roll changing trolley or the intermediate roll changing trolley is used as a driving device, the safe operation platform and the like are dragged to move, an independent driving device is not configured, the driving device of a supporting roll changing system and corresponding hydraulic components are prevented from being idle for a long time, and energy conservation is effectively realized;
(2) the two online lathes are normally positioned below the roll system, namely are positioned in the rolling mill body for a long time, and the huge space occupied by the online lathes is overlapped with the space of the rolling mill body, so that a large amount of space is saved, and the structure is very compact.
In order to make the above and other objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic configuration diagram of a replacement system for a backup roll of a rolling mill.
Fig. 2 is a schematic structural view of a replacement system of a backup roll of a rolling mill in an initial state.
Fig. 3 is a schematic structural view of a replacement system of a backup roll of a rolling mill in a roll replacement state.
Description of reference numerals:
1. a secure operating platform; 2. off-line vehicles; 3. an online vehicle; 4. a connecting frame; 5. a roll changing track; 6. a roll changing bracket; 7. a mill track; 8. an upper supporting roller; 9. a lower support roll; 10. roll changing vehicle;
A. connecting holes; B. a taper pin; C. and (7) a cylindrical pin.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.
In the present invention, the upper, lower, left and right in the drawings are regarded as the upper, lower, left and right of the replacement system of the mill backup roll described in the present specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, which, however, may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art. The terminology used in the exemplary embodiments presented in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
It should be noted that the upper supporting roll 8 described below refers to an old upper supporting roll to be replaced, which is worn, and for convenience of description, the upper supporting roll 8 is expressed as an (old) upper supporting roll 8, and is distinguished from a new upper supporting roll; likewise, the lower support roller 9 means an old one to be replaced having wear, and for convenience of description, the lower support roller 9 is expressed as an (old) lower support roller 9 to be distinguished from a new one.
The first embodiment:
referring to fig. 1, the present embodiment provides a replacement system for a backup roll of a rolling mill, as shown in fig. 1, including a safety operation platform 1 which is arranged outside the rolling mill and can cover a pit hole outside the rolling mill, wherein the safety operation platform 1 is suspended at the bottom of a roll changing carriage 10 in a sliding manner, and the roll changing carriage 10 is a work roll changing carriage or an intermediate roll changing carriage;
the end part of the safe operation platform 1 close to the rolling mill is hinged with an off-line vehicle 2, a roll changing track 5 which is laid on a civil engineering foundation and connected with a rolling mill track 7 is arranged below the off-line vehicle 2, an on-line vehicle 3 is arranged on the roll changing track 5 in a sliding manner, when the on-line vehicle 3 drives away from the roll changing track 5 and slides into the rolling mill track 7, the on-line vehicle 3 is positioned under a lower supporting roll 9 of the rolling mill, and a main hydraulic cylinder or a rolling line adjusting device of the rolling mill can penetrate through the on-line vehicle 3 and extend out to contact the lower supporting roll 9 or retract to separate from the lower supporting roll 9.
The replacement system of the backup roll of the rolling mill has two states, namely an initial state and a roll replacement state, which will be described in detail below:
initial state
The line trolley 3 is arranged on the rolling mill track, so that the line trolley 3 is positioned right below the (old) lower supporting roll 9, and a main hydraulic cylinder or a rolling line adjusting device of the rolling mill can pass through the line trolley 3 and extend to contact the (old) lower supporting roll 9 or retract to be separated from the (old) lower supporting roll 9;
laying a roll changing track 5 connected with a rolling mill track 7 in a pot hole outside a rolling mill, laying an off-line trolley 2 on the roll changing track 5, hinging the top of the off-line trolley 2 to the end part of a safe operation platform 1, covering the pot hole by the safe operation platform 1 and suspending the safe operation platform at the bottom of a roll changing trolley 10 in a sliding manner, wherein the roll changing trolley 10 is a working roll changing trolley or an intermediate roll changing trolley;
in the initial state, the safe operation platform 1, the off-line vehicle 2 and the on-line vehicle 3 are all positioned at the respective front limit positions, and the roll changing vehicle 10 is positioned at the rear limit position;
the initial state is a non-roll-changing state, and is a normal state of a replacing system, at the moment, the safety operation platform 1 completely covers ground pits to ensure the safety of other related operations, as shown in fig. 2, the safety operation platform 1 and the roll changing carriage 10 are in a disengaged state, the roll changing carriage 10 is in a rear limit position, the off-line carriage 2 is positioned outside a rolling mill body, wheels of the off-line carriage 2 are positioned on a roll changing track 5, the on-line carriage 3 is positioned inside the rolling mill body, wheels of the on-line carriage 3 are positioned on a rolling mill track 7 (an inner track of the rolling mill body), therefore, in most cases, a huge space occupied by the on-line carriage 3 can be overlapped with the rolling mill body, a large amount of space cost is saved, and a main oil cylinder or a rolling line adjusting device adjusts the extending amount of a hollow part of the on-line carriage 3 to control the thickness of an aluminum strip or compensate the roll diameter, at the moment, a lower supporting roll is disengaged from a supporting plane of the on In this state, the roll change stand 6 is outside the mill train line for a long period of time and is not associated with the rest of the system, and the (old) upper support roll 88 is lowered from the high position to the low position by the body insert apparatus.
Roll change state
When the initial state is changed to the roll change state, the rolling mill body is stopped and the work rolls and intermediate rolls are dragged out of the unit production line, at which time the master cylinder or the line adjusting device is retracted from the hollow part of the line trolley 3 to the lowest position to make room for the movement of the system, and the (old) lower support roll 9 is then lowered to the support plane of the line trolley 3.
First, the roll-changing carriage 10 is moved from the rear limit position to the front limit position and connected to the safety operating platform 1, see figure 3, then the whole body connected with the safe operation platform 1, the off-line vehicle 2 and the on-line vehicle 3 is dragged to the rear limit position, at the moment, the (old) lower supporting roll 9 is also dragged to the rear limit position due to the supporting plane of the on-line vehicle 3, the wheels of the on-line trolley 3 are moved from the mill rail 7 onto the roll change rail 5, and then the roll change cradle 6 is hoisted over the (old) lower back-up roll 9, the (old) upper supporting roll 8 is then raised from the lower position to the upper position by the insert device of the rolling mill body so that the whole body of the roll change support 6 connected with the (old) lower supporting roll 9 is dragged to the front limit position by the roll change carriage 10, and then the (old) upper supporting roll 8 is lowered from the upper position to the lower position by the insert device of the rolling mill body and is in contact with the supporting plane of the roll change support 6.
Then, the whole formed by connecting the old upper and lower supporting rolls and the roll changing bracket 6 by the roll changing trolley 10, the safe operation platform 1, the off-line trolley 2, the on-line trolley 3 and the connecting frame 4 is dragged to a rear limit position along the roll changing track 5, and at the moment, the (old) upper supporting roll 8 and the (old) lower supporting roll 9 are completely dragged to the outside of the rolling mill body and have hoisting conditions.
After the (old) upper supporting roll 8, the roll changing bracket 6 and the (old) lower supporting roll 9 are sequentially lifted away, the new lower supporting roll, the roll changing bracket 6 and the new upper supporting roll are sequentially lifted to corresponding positions, and the positions of the new and old supporting rolls and the roll changing bracket 6 are in one-to-one correspondence. Then the new upper supporting roll, the roll changing bracket 6 and the new lower supporting roll are dragged to the front limit position by the whole formed by connecting the roll changing trolley 10, the safe operation platform 1, the off-line trolley 2, the on-line trolley 3 and the connecting frame 4, and then the new upper supporting roll is lifted to the high position from the low position by the corresponding insert device of the rolling mill body and separated from the cylindrical pin C of the roll changing bracket 6.
Finally, the roll changing bracket 6 and the new lower supporting roll are dragged to the rear limit position by the whole body formed by the roll changing trolley 10, the safe operation platform 1, the off-line trolley 2, the on-line trolley 3 and the connecting frame 4 so as to be beneficial to the lifting of the roll changing bracket 6.
After the roll changing support 6 is lifted away from the system, a new lower supporting roll is dragged to a front limit position by a whole body formed by the roll changing trolley 10, the safe operation platform 1, the off-line trolley 2, the on-line trolley 3 and the connecting frame 4, then a main oil cylinder or a rolling line adjusting device extends out of a hollow part of the on-line trolley 3 and is in contact with the new lower supporting roll, and the new upper supporting roll is descended from a high position to a low position under the action of the rolling mill body insert device.
The roll change carriage 10 is then pulled away from the safety operating platform 1 and moved to the rear limit position.
At the moment, the supporting roll replacing system, the upper and lower supporting rolls, the main oil cylinder or the rolling line adjusting device, the insert device of the rolling mill body and the like return to the initial state again and are ready for replacing the supporting roll next time.
The front limit positions are all limit positions which can be reached by moving along the roll changing track 5 or the rolling mill track 7 towards the direction close to the rolling mill; the rear limit position and the rear limit position of the second step are both limit positions which can be reached by moving along the roll changing track 5 or the rolling mill track 7 in a direction away from the rolling mill.
In the embodiment, an independent driving device is not configured, and the roller changing trolley 10 (the roller changing trolley is a working roller changing trolley or an intermediate roller changing trolley) is dragged to move, so that the working roller changing trolley or the intermediate roller changing trolley and corresponding hydraulic components are prevented from being idle for a long time, and energy conservation is effectively realized; meanwhile, the huge space occupied by the online trolley is overlapped with the space of the rolling mill body, so that the structure of the embodiment is extremely compact and a large amount of space overhead is saved.
Second embodiment:
on the basis of the first embodiment, the line trolley 3 is a trolley located in the rolling mill production line, and is of a hollow frame structure, two line trolleys 3 are arranged, and the two line trolleys 3 are connected through the connecting frame 4 to form an integral structure capable of moving on the roll changing track 5 or the rolling mill track 7 at the same speed.
In order to avoid relative movement or overturning of the lower supporting roll and the replacing system and ensure synchronous and stable movement of the lower supporting roll and the replacing system, as shown in fig. 1, two taper pins B are symmetrically arranged on a frame of each online vehicle 3, the two taper pins B are symmetrically distributed about a length direction central line of the roll changing track 5 or a length direction central line of the rolling mill track 7, a connecting line of the two taper pins B is perpendicular to the roll changing track 5 or the rolling mill track 7, the diameter of each taper pin B is 75-80 mm, and the length of each taper pin B is 350-360 mm.
The online trolley 3 is spliced with a bearing seat of an old lower supporting roller 9 or a bearing seat of a new lower supporting roller through a taper pin B, holes for inserting the taper pin B are respectively formed in the bearing seat of the old lower supporting roller 9 and the bearing seat of the new lower supporting roller, the radial clearance between the holes and the taper pin B is 1-1.5 mm, the lower supporting roller can be conveniently and safely and accurately hoisted at a corresponding position of a replacement system through the clearance, and the clearance can compensate the vibration and deviation adjustment of the lower supporting roller in the rolling process.
The third embodiment:
on the basis of the first embodiment, the off-line trolley 2 refers to a trolley located outside the production line of the rolling mill, and as shown in fig. 1, one end of the trolley extends vertically upwards and is hinged with the end of the safe operating platform 1, and the other end is detachably connected with the on-line trolley 3 through a fastener.
Roll change support 6 includes the riser of rectangle, and four angles of riser are the rigid coupling respectively a layer board, are equipped with two cylindric locks C on every layer board, and two cylindric locks C are about riser symmetric distribution, and the diameter of cylindric lock C is 80mm ~ 85mm, and length is 30mm ~ 40mm, can be as an organic whole and make its holistic removal with upper supporting roller and bottom supporting roller bearing connection when roll change through cylindric lock C.
Roll changing support 6 is spliced with the bearing seat of (old) upper supporting roll 88 or the bearing seat of new upper supporting roll through two cylindric locks C above the riser, two cylindric locks C through the riser below are spliced with the bearing seat of (old) lower supporting roll 9 or the bearing seat of new lower supporting roll, set up the hole that is used for inserting cylindric lock C on every bearing seat, the hole is 0.1mm ~ 0.5mm with cylindric lock C's radial clearance, this clearance both can guarantee roll changing support 6 can be convenient hoist and mount in the relevant position of lower supporting roll but also can guarantee that upper supporting roll can be convenient hoist and mount in the relevant position of roll changing support 6, and this little clearance can make upper and lower supporting roll and roll changing support 6 can not take place the dangerous situation that the focus moved or tumbles when moving as a whole.
The end part of the safe operation platform 1 is provided with a connecting hole A used for being connected with the roll changing trolley 10, the connecting hole A is positioned right above the off-line trolley 2, and the safe operation platform 1 can be connected with or disconnected from the roll changing trolley 10 through the connecting hole A.
The roll changing track 5 is fixed on a civil foundation, one end of the roll changing track, which is close to the rolling mill, is connected with the rolling mill body, so that the roll changing track 5 can not generate serious deformation and displacement when bearing the huge gravity of the off-line trolley 2, the on-line trolley 3, the connecting frame 4, the roll changing support 6 and the upper and lower supporting rolls, the position precision of the system in work is improved, and the elevation and the section of the roll changing track 5 are consistent with the elevation and the section of the rolling mill track 7, so that the on-line trolley 3 can conveniently get in and out of the rolling mill.
Fourth embodiment:
on the basis of all the above embodiments, specifically, the initial state of this embodiment is the non-roll-changing state, the initial state is the normal state, at this moment, the system is all in the front limit position, that is, the safety operation platform 1 covers the ground pot hole to ensure the safety of other related operations, the connection hole a of the safety operation platform 1 and the roll changing carriage 10 are in the disengagement state, the roll changing carriage 10 is in the rear limit position, the off-line carriage 2 is outside the rolling mill body, and the wheels of the off-line carriage 2 are on the roll changing track 5, the two on-line carriages 3 and the connection frame 4 thereof are all inside the rolling mill body, and the wheels of the on-line carriages 3 are on the rolling mill track 7, so the utility model discloses can overlap the huge space occupied by the on-line carriages 3 and the connection frame 4 with the rolling mill body and save a large amount of space overhead in most cases, and the main oil cylinder or the rolling line adjusting device adjusts the amount of protrusion through the hollow part of the on-line carriage 3 to control the thickness of The roll diameter is compensated, at the moment, the lower supporting roll is in a separation state with the supporting plane of the online trolley 3 due to the supporting action of the main oil cylinder or the rolling line adjusting device, but the taper pin B at the top of the online trolley 3 is in a corresponding hole of the bearing seat of the lower supporting roll for a long time.
The roll changing bracket 6 in the initial state is positioned outside the unit production line for a long time and is not associated with other parts of the system, and the upper supporting roll descends from a high position to a low position under the action of the rolling mill body insert device.
The roll changing state is a state when the old supporting roll is dragged out of the rolling mill, the new supporting roll is pushed into the rolling mill and the production condition is met again, and the mutual conversion process of the initial state and the roll changing state is as follows:
when the initial state is changed to the roll change state, the rolling mill body is stopped, and the working rolls and the intermediate rolls are dragged out of the production line of the unit, at which time the master cylinder or the rolling line adjusting device is retracted from the hollow part of the on-line trolley 3 to the lowest position to make room for the movement of the system, and the (old) lower supporting roll 9 is then lowered to the supporting plane of the on-line trolley 3.
Firstly, the roll changing cart 10 moves from a rear limit position to a front limit position and is connected with the roll changing cart through a connecting hole A of the safe operation platform 1, then the whole body connected with the safe operation platform 1, the off-line cart 2, the on-line cart 3 and the connecting frame 4 is dragged to the rear limit position, at the moment, an (old) lower supporting roll 9 is also dragged to the rear limit position due to the combined action of a supporting plane of the on-line cart 3 and a taper pin B, wheels of the on-line cart 3 move to the roll changing track 5 from a rolling mill track 7, then the roll changing bracket 6 is hoisted to the position above the (old) lower supporting roll 9, a cylindrical pin C of the roll changing bracket 6 is inserted into a corresponding hole of a bearing seat of the (old) lower supporting roll 9, then the (old) upper supporting roll 8 rises to the high position from the low position under the action of an insert device of a rolling mill body so as to be beneficial to that the whole body connected with the (old), the (old) upper supporting roll 8 is then lowered from the high position to the low position by the insert device of the rolling mill body and is in contact with the support plane of the roll change cradle 6, and the cylindrical pin C of the roll change cradle 6 is inserted in the corresponding hole of the bearing block of the (old) upper supporting roll 8.
Because the cylindric lock C of roll change support 6 is 0.1 ~ 0.5 mm's little clearance between the corresponding hole, old upper and lower backing roll is connected as whole and very stable and difficult the tipping this moment with roll change support 6, then old upper and lower backing roll and roll change support 6 are dragged to the back extreme position along roll change track 5 by roll change car 10, safe operation platform 1, off-line car 2, the whole that online car 3 and link 4 connect into, at this moment, (old) upper backing roll 8 and (old) lower backing roll 9 are dragged to the outside of rolling mill body completely and possess the hoist and mount condition.
After the (old) upper supporting roll 8, the roll changing bracket 6 and the (old) lower supporting roll 9 are sequentially lifted away, the new lower supporting roll, the roll changing bracket 6 and the new upper supporting roll are sequentially lifted to corresponding positions, and the positions of the new and old supporting rolls and the roll changing bracket 6 are in one-to-one correspondence.
The new upper supporting roll, the roll changing bracket 6 and the new lower supporting roll are dragged to the front limit position by the whole formed by connecting the roll changing trolley 10, the safe operation platform 1, the off-line trolley 2, the on-line trolley 3 and the connecting frame 4, and then the new upper supporting roll is lifted to the high position from the low position by the corresponding insert device of the rolling mill body and separated from the cylindrical pin C of the roll changing bracket 6.
The roll changing bracket 6 and the new lower supporting roll are dragged to the rear limit position by the whole body formed by the roll changing trolley 10, the safe operation platform 1, the off-line trolley 2, the on-line trolley 3 and the connecting frame 4 so as to be beneficial to the lifting of the roll changing bracket 6. After the roll changing bracket 6 is lifted away from the system, the new lower supporting roll is dragged to the front limit position by the whole body formed by the roll changing trolley 10, the safe operation platform 1, the off-line trolley 2, the on-line trolley 3 and the connecting frame 4.
The main oil cylinder or the rolling line adjusting device extends out of the hollow part of the rolling line vehicle 3 and is contacted with a new lower supporting roll, and the new upper supporting roll descends from a high position to a low position under the action of the rolling mill body insert device.
Then the working roll and the intermediate roll are changed and dragged to the rear limit position with the connecting hole of the safe operation platform 1, at the moment, the system, the upper and lower supporting rolls, the main oil cylinder or the rolling line adjusting device, the insert device of the rolling mill body and the like return to the initial state again and prepare for next supporting roll change.
The main function of the roll changing bracket 6 is to connect the upper support roll and the lower support roll into a whole to facilitate the upper support roll to be dragged out of the rolling mill or dragged into the rolling mill, as can be seen from the mutual conversion process of the initial state and the roll changing state, and the process needs to be assisted by the insert of the rolling mill body to enable the cylindrical pin C of the roll changing bracket 6 to be inserted into or pulled out of the corresponding hole of the upper support roll.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (9)
1. A replacement system of a supporting roll of a rolling mill is characterized in that: the device comprises a safe operation platform (1) which is arranged outside a rolling mill and can cover a pit hole outside the rolling mill, wherein the safe operation platform (1) is suspended at the bottom of a roll changing trolley (10) in a sliding manner, and the roll changing trolley (10) is a working roll changing trolley or an intermediate roll changing trolley;
the end portion, close to the rolling mill, of the safe operation platform (1) is hinged to an off-line trolley (2), the lower portion of the off-line trolley (2) is paved on a civil engineering foundation and is provided with a roll changing track (5) connected with a rolling mill track (7), an on-line trolley (3) is arranged on the roll changing track (5) in a sliding mode, when the on-line trolley (3) drives away from the roll changing track (5) and slides into the rolling mill track (7), the on-line trolley (3) is located under a lower supporting roll (9) of the rolling mill, and a main hydraulic cylinder or a rolling line adjusting device of the rolling mill can penetrate through the on-line trolley (3) and stretch out and contact with the lower supporting roll (9) or retract to separate from the lower supporting roll.
2. A mill backup roll replacement system as defined in claim 1 wherein: the online trolley (3) is a trolley positioned in a rolling mill production line, is of a hollow frame structure, and has two online trolleys (3), wherein the two online trolleys (3) are connected into an integrated structure capable of moving on a roll changing track (5) or a rolling mill track (7) at the same speed through a connecting frame (4).
3. A mill backup roll replacement system as claimed in claim 2 wherein: two taper pins B are symmetrically arranged on a frame of each online vehicle (3), the two taper pins B are symmetrically distributed about the center line of the length direction of the roll changing track (5) or the center line of the length direction of the rolling mill track (7), the connecting line of the two taper pins B is perpendicular to the roll changing track (5) or the rolling mill track (7), the diameter of each taper pin B is 75-80 mm, and the length of each taper pin B is 350-360 mm.
4. A mill backup roll replacement system as claimed in claim 3 wherein: the online trolley (3) is connected with a bearing seat of the lower supporting roller (9) in an inserting mode through the taper pin B, a hole used for inserting the taper pin B is formed in the bearing seat of the lower supporting roller (9), and the radial clearance between the hole and the taper pin B is 1 mm-1.5 mm.
5. A mill backup roll replacement system as defined in claim 1 wherein: the off-line trolley (2) is a trolley positioned outside a rolling mill production line, one end of the off-line trolley extends vertically upwards and is hinged with the end part of the safe operation platform (1), and the other section of the off-line trolley is detachably connected with the on-line trolley (3) through a fastener.
6. A mill backup roll replacement system as defined in claim 1 wherein: the roller changing support is characterized by further comprising a roller changing support (6), wherein the roller changing support (6) comprises a rectangular vertical plate, four corners of the vertical plate are fixedly connected with a supporting plate respectively, two cylindrical pins C are arranged on each supporting plate and symmetrically distributed about the vertical plate, the diameter of each cylindrical pin C is 80-85 mm, and the length of each cylindrical pin C is 30-40 mm.
7. A mill backup roll replacement system as claimed in claim 6 wherein: the roller changing support (6) is connected with a bearing seat of an upper supporting roller (8) in an inserting mode through two cylindrical pins C above a vertical plate, connected with a bearing seat of a lower supporting roller (9) in an inserting mode through two cylindrical pins C below the vertical plate, a hole used for inserting the cylindrical pin C is formed in each bearing seat, and the radial clearance between the hole and the cylindrical pin C is 0.1-0.5 mm.
8. A mill backup roll changing system according to claim 1 or 5, characterized in that: the end part of the safe operation platform (1) is provided with a connecting hole A which is used for being connected with the roll changing trolley (10), and the connecting hole A is positioned right above the off-line trolley (2).
9. A mill backup roll replacement system as defined in claim 1 wherein: the roll changing track (5) is fixed on a civil engineering foundation, and the elevation and the section of the roll changing track (5) are consistent with those of the rolling mill track (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020688122.5U CN212733571U (en) | 2020-04-29 | 2020-04-29 | Replacement system of rolling mill supporting roll |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020688122.5U CN212733571U (en) | 2020-04-29 | 2020-04-29 | Replacement system of rolling mill supporting roll |
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| CN212733571U true CN212733571U (en) | 2021-03-19 |
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| CN202020688122.5U Active CN212733571U (en) | 2020-04-29 | 2020-04-29 | Replacement system of rolling mill supporting roll |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102512A (en) * | 2021-04-26 | 2021-07-13 | 重庆钢铁股份有限公司 | Quick-change support frame for supporting roller and quick-change method thereof |
| CN117428009A (en) * | 2023-12-20 | 2024-01-23 | 涿州市飞亚机械有限责任公司 | Double-aluminum casting and rolling machine with shared structure arrangement |
-
2020
- 2020-04-29 CN CN202020688122.5U patent/CN212733571U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102512A (en) * | 2021-04-26 | 2021-07-13 | 重庆钢铁股份有限公司 | Quick-change support frame for supporting roller and quick-change method thereof |
| CN117428009A (en) * | 2023-12-20 | 2024-01-23 | 涿州市飞亚机械有限责任公司 | Double-aluminum casting and rolling machine with shared structure arrangement |
| CN117428009B (en) * | 2023-12-20 | 2024-03-08 | 涿州市飞亚机械有限责任公司 | Double-aluminum casting and rolling machine with shared structure arrangement |
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