A finishing rolling work roll changing device

Abstract

The present invention provides a finishing rolling work roll changing device, comprising: a transverse shifting device, a roll changing trolley, a supporting bridge and a fixed track; the bottom of the supporting bridge is hollow, and a track I is provided on the top, and the track I overlaps with the fixed track in the length direction; the roll changing trolley moves back and forth on the transverse shifting device, the supporting bridge and the fixed track through the running wheels I provided at the bottom thereof, pushes the new roll onto the transverse shifting device and cooperates with the transverse shifting device to finally push the new roll into the rolling mill frame, and transports the old roll pulled out of the rolling mill frame to the grinding roll room. The present invention adopts a split transverse shifting roll changing car and a swing transverse shifting track, which has a high degree of automation and can realize fast and fully automatic roll changing; using the split transverse shifting train and the swing transverse shifting track, there is no need to lift a huge transverse shifting car when replacing the supporting rolls, which greatly simplifies the roll changing operation and reduces the area occupied by the cover plate lifted when replacing the supporting rolls.

Description

Technical Field

[0001] The invention relates to the technical field of rolling equipment, and in particular to a finishing rolling working roll changing device. Background Art

[0002] At present, some of the finishing mill working roll changing devices used in hot rolling lines use lifting cover plates in combination with an overall transverse moving train. When replacing the support rolls, there is no need to lift the cover plates, but the equipment structure is complex and the workload of maintaining the hydraulic system under the lifting cover plates is large; some cancel the lifting cover plates and use an overall transverse moving train. When replacing the support rolls, all the cover plates except the transverse moving car body need to be lifted away, which is time-consuming and space-consuming. The above structures cannot take into account factors such as the overall structure of the equipment, equipment maintenance costs, and operational convenience. Summary of the invention

[0003] According to the above-mentioned proposed working roll changing device for finishing mill currently used in hot rolling line, some use lifting cover plate in combination with overall transverse moving train form, and there is no need to lift the cover plate when replacing the supporting roll, but the equipment structure is complicated and the workload of maintaining the lower hydraulic system of the lifting cover plate is large; some cancel the lifting cover plate and use the overall transverse moving train form, and when replacing the supporting roll, it is necessary to lift all the cover plates except the transverse moving car body, which is time-consuming and occupies space; the above structures cannot take into account the technical problems of factors such as the overall structure of the equipment, the equipment maintenance cost, and the convenience of operation, and provide a finishing working roll changing device. The present invention mainly utilizes a split transverse moving roll changing car and a swing transverse moving track, which has a high degree of automation and can realize fast and fully automatic roll changing; using a split transverse moving train and a swing transverse moving track, there is no need to lift the huge transverse moving car when replacing the supporting roll, which greatly simplifies the roll changing operation and reduces the area occupied by the cover plate lifted when replacing the supporting roll.

[0004] The technical means adopted by the present invention are as follows:

[0005] A finishing rolling work roll changing device, comprising: a transverse moving device, a roll changing trolley, a supporting bridge and a fixed track; the bottom of the supporting bridge is hollow, and a track I is provided on the top, and the track I overlaps with the fixed track in the length direction; the roll changing trolley reciprocates on the transverse moving device, the supporting bridge and the fixed track through the running wheels I provided at the bottom thereof, pushes the new roll onto the transverse moving device, cooperates with the transverse moving device to finally push the new roll into the rolling mill frame, and transports the old roll pulled out of the rolling mill frame to the grinding roll room;

[0006] The transverse shifting device comprises a transverse shifting roll-changing vehicle, a transverse shifting hydraulic cylinder and a transverse shifting track arranged at the bottom of the transverse shifting roll-changing vehicle; a travel wheel II is arranged at the bottom of the transverse shifting roll-changing vehicle, and the transverse shifting roll-changing vehicle is driven by the transverse shifting hydraulic cylinder and reciprocates on the transverse shifting track through the travel wheel II; the transverse shifting track is arranged perpendicular to the fixed track;

[0007] The transverse shift roll-changing vehicle is mainly composed of a first transverse shift roll-changing frame and a second transverse shift roll-changing frame of a split type, and adjacent sides of the first transverse shift roll-changing frame and the second transverse shift roll-changing frame are provided with pin shaft mounting holes, and the pin shafts are matched and connected in the pin shaft mounting holes, and the first transverse shift roll-changing frame and the second transverse shift roll-changing frame are connected through the pin shaft; the piston rod of the transverse shift hydraulic cylinder is connected to the bottom surface of the first transverse shift roll-changing frame parallel to the horizontal plane, so as to drive the first transverse shift roll-changing frame to reciprocate; wherein, the split type means that when the support roll needs to be replaced, the two transverse shift roll-changing frames corresponding to each rolling mill are symmetrically separated by the center line of the rolling mill, and the space exposed in the middle is used for replacing the support roll;

[0008] The first transverse roll-changing frame and the second transverse roll-changing frame are both provided with tracks II on both sides in the width direction, and a chain transmission structure is provided in the middle, which is located between the two tracks II; the chain transmission structure is composed of pins with the same intervals; the track II is in contact with the walking wheel or slide plate at the bottom of the working roll and the walking wheel I; the roll-changing trailer is provided with a gear mechanism, and the gear mechanism is meshed and connected with the pin on the chain transmission structure; the front end of the roll-changing trailer is provided with a roll-changing hook, and the roll-changing hook is connected to the bracket arranged on the end face of the lower working roll bearing seat; the gear is driven to rotate by the motor of the roll-changing trailer, and the gear mechanism is meshed and transmitted with the chain transmission structure, thereby driving the roll-changing trailer to move, and driving the working roll assembly to move through the roll-changing hook.

[0009] Furthermore, the transverse shifting device, the roll-changing trailer, the supporting bridge and the fixed rail are used in combination, and one set is provided for each finishing mill.

[0010] Furthermore, a movable cover plate is provided between two adjacent transverse shifting devices, and the movable cover plate is connected to the transverse shifting device by a pin shaft.

[0011] Furthermore, the first transverse roller-changing frame is used to carry new rollers, and the second transverse roller-changing frame is used to carry old rollers;

[0012] During the roll changing process, the center line of the working rolls on the first transverse roll changing frame or the second transverse roll changing frame coincides with the center line of the roll working position on the finishing mill; the track II on the first transverse roll changing frame or the track II on the second transverse roll changing frame coincides with the track I and the fixed track in the length direction.

[0013] Further, the transverse roller table includes a fixed transverse track and a swing transverse track, and the swing transverse track is connected to the piston rod of the swing hydraulic cylinder;

[0014] Two fixed transverse rails are arranged on both sides of the swing transverse rail, one end of the swing transverse rail is hinged to one end of the fixed transverse rail on one side, and the other end is butted with one end of the fixed transverse rail on the other side; the positions of the hinged end and the butted end on the two parallel transverse rails are opposite, which means that the hinged end on one transverse rail is opposite to the butted end on the other transverse rail, and the butted end on one transverse rail is opposite to the hinged end on the other transverse rail; the butted ends on the two transverse rails are respectively connected to the piston rods of the two swing hydraulic cylinders, and the two swing hydraulic cylinders are fixed between the two parallel transverse rails;

[0015] The swinging transverse track is driven by the swing hydraulic cylinder to rotate inward around the fixed transverse track. The rotation of the swinging transverse track disconnects a part of the transverse track facing the window of the finishing mill, thereby making room for changing the supporting rolls.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The finishing rolling work roll changing device provided by the present invention adopts a split-type transverse shifting roll changing vehicle and a swing transverse shifting track, has a high degree of automation, and can realize fast and fully automatic roll changing.

[0018] 2. The finishing rolling work roll changing device provided by the present invention uses a split-type transverse moving train and a swing transverse moving track. When replacing the supporting rolls, there is no need to lift the huge transverse moving car, which greatly simplifies the roll changing operation and reduces the area occupied by the cover plate lifted when replacing the supporting rolls.

[0019] 3. The finishing rolling work roll changing device provided by the present invention optimizes the equipment structure so that the entire mechanism has a better equipment structure while meeting the functional requirements, thereby reducing the maintenance workload of the equipment.

[0020] 4. The finishing rolling work roll changing device provided by the present invention comprehensively considers the equipment composition and can simultaneously meet the needs of replacing working rolls and supporting rolls of multiple finishing mills or replacing working rolls and supporting rolls of a single finishing mill, taking into account various influencing factors.

[0021] In summary, the technical solution of the present invention can solve the problems in the prior art of the finishing mill working roll changing device used on the hot rolling line. Some of them use a lifting cover plate in combination with an overall transverse moving train. When replacing the supporting rolls, there is no need to lift the cover plate, but the equipment structure is complicated and the workload of maintaining the lower hydraulic system of the lifting cover plate is large; some of them cancel the lifting cover plate and use an overall transverse moving train. When replacing the supporting rolls, all the covers except the transverse moving car body need to be lifted away, which is time-consuming and occupies space; the above structures cannot take into account the problems of factors such as the overall structure of the equipment, the equipment maintenance cost, and the convenience of operation.

[0022] Based on the above reasons, the present invention can be widely promoted in the fields of rolling equipment and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is an axonometric view of the finishing rolling work roll changing device of the present invention.

[0025] Figure 2 It is an axonometric view of a split first transverse shift roll changing frame or a second transverse shift roll changing frame in the finishing rolling work roll changing device of the present invention.

[0026] Figure 3 It is an axonometric view of the movable cover plate in the finishing rolling work roll changing device of the present invention.

[0027] Figure 4 It is a front view of the transverse shifting device in the finishing rolling work roll changing device of the present invention.

[0028] Figure 5 It is an axonometric view of the swinging and transversely shifting track in the finishing rolling work roll changing device of the present invention.

[0029] In the figure: 1. First transverse roller-changing frame; 2. Second transverse roller-changing frame; 3. Movable cover plate; 4. Roller-changing trailer; 5. Support bridge; 6. Fixed track; 7. Transverse hydraulic cylinder; 8. Swing hydraulic cylinder; 9. Swing transverse track. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0036] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0037] like Figure 1-5 As shown, the present invention provides a finishing rolling work roll changing device, comprising: a transverse moving device of the same platform as the finishing mill, a roll changing trolley 4, a supporting bridge 5 and a fixed track 6; the bottom of the supporting bridge 5 is hollow, and a track Ⅰ is provided on the top, and the track Ⅰ overlaps with the fixed track 6 in the length direction; the roll changing trolley 4 reciprocates on the transverse moving device, the supporting bridge 5 and the fixed track 6 through the running wheels Ⅰ provided at the bottom thereof, pushes the new roll onto the transverse moving device, cooperates with the transverse moving device to finally push the new roll into the rolling mill frame, and transports the old roll pulled out of the rolling mill frame to the grinding roll room;

[0038] The transverse shifting device comprises a transverse shifting roll-changing vehicle, a transverse shifting hydraulic cylinder 7 and a transverse shifting track disposed at the bottom of the transverse shifting roll-changing vehicle; a travel wheel II is disposed at the bottom of the transverse shifting roll-changing vehicle, and the transverse shifting roll-changing vehicle is driven by the transverse shifting hydraulic cylinder 7 and reciprocates on the transverse shifting track via the travel wheel II; the transverse shifting track is disposed perpendicularly to the fixed track 6;

[0039] The transverse roller-changing vehicle is mainly composed of a first transverse roller-changing frame 1 and a second transverse roller-changing frame 2, and the adjacent sides of the first transverse roller-changing frame 1 and the second transverse roller-changing frame 2 are provided with pin shaft mounting holes, and the pin shafts are matched and connected in the pin shaft mounting holes. The first transverse roller-changing frame 1 and the second transverse roller-changing frame 2 are connected through the pin shaft; the piston rod of the transverse hydraulic cylinder 7 is connected to the bottom surface of the first transverse roller-changing frame 1 parallel to the horizontal plane, driving the first transverse roller-changing frame 1 to reciprocate;

[0040] The first transverse shifting roll-changing frame 1 and the second transverse shifting roll-changing frame 2 are both provided with tracks II on both sides in the width direction, and a chain transmission structure is provided in the middle, which is located between the two tracks II; the chain transmission structure is composed of pins with the same intervals; the track II is in contact with the walking wheel or slide plate at the bottom of the working roll and the walking wheel I; the roll-changing trailer 4 is provided with a gear mechanism, and the gear mechanism is meshed and connected with the pins on the chain transmission structure; the front end of the roll-changing trailer 4 is provided with a roll-changing hook, and the roll-changing hook is connected to the bracket arranged on the end face of the lower working roll bearing seat; the gear is driven to rotate by the motor of the roll-changing trailer 4, and the gear mechanism is meshed and transmitted with the chain transmission structure, thereby driving the roll-changing trailer 4 to move, and driving the working roll assembly to move through the roll-changing hook.

[0041] Preferably, the transverse shifting device, the roll-changing trailer 4, the supporting bridge 5 and the fixed rail 6 are used in combination, and one set is provided for each finishing mill.

[0042] Preferably, a movable cover plate 3 is provided between two adjacent transverse movement devices, and the movable cover plate 3 is connected to the transverse movement device by a pin shaft.

[0043] Preferably, the first transverse shifting roll changing frame 1 is used to carry new rolls, and the second transverse shifting roll changing frame 2 is used to carry old rolls; during the roll changing process, the center line of the working rolls on the first transverse shifting roll changing frame 1 or the second transverse shifting roll changing frame 2 coincides with the center line of the roll working position on the finishing mill; the track II on the first transverse shifting roll changing frame 1 or the track II on the second transverse shifting roll changing frame 2 coincides with the track I and the fixed track 6 in the length direction.

[0044] Preferably, the transverse roller table includes a fixed transverse track and a swing transverse track 9, and the swing transverse track 9 is connected to the piston rod of the swing hydraulic cylinder 8;

[0045] Two fixed transverse rails are arranged on both sides of the swing transverse rail 9, one end of the swing transverse rail 9 is hinged to one end of the fixed transverse rail on one side, and the other end is butted to one end of the fixed transverse rail on the other side; the positions of the hinged end and the butted end on the two parallel transverse rails are opposite, which means that the hinged end on one transverse rail is opposite to the butted end on the other transverse rail, and the butted end on one transverse rail is opposite to the hinged end on the other transverse rail; the butted ends on the two transverse rails are respectively connected to the piston rods of the two swing hydraulic cylinders 8, and the two swing hydraulic cylinders 8 are fixed between the two parallel transverse rails;

[0046] The swinging transverse track 9 is driven by the swing hydraulic cylinder 8 to rotate inward around the fixed transverse track. The rotation of the swinging transverse track 9 disconnects a part of the transverse track facing the window of the finishing mill, making room for changing the support rolls.

[0047] Example 1

[0048] As shown in the figure, the finishing rolling work roll changing device includes a split-type transverse shifting device of the same size as the finishing mill, a roll changing trailer 4, and a fixed track 6. Each finishing mill corresponds to a set of finishing rolling work roll changing devices. When multiple finishing mills are working at the same time, the movable cover plate 3 is movably connected between two adjacent transverse shifting devices, and then the transverse shifting devices corresponding to the adjacent finishing mills are connected into one body and work at the same time. The roll changing trailer 4 is a sprocket-driven walking mechanism containing devices such as a cable drum, an operating table, and an electric control cabinet.

[0049] The following is an explanation of the working roll changing device corresponding to a finishing mill. The transverse device includes a transverse roll changing car, a transverse hydraulic cylinder 7 and a transverse roller. The front end of the track II of the transverse roll changing car is directly connected to the lifting track in the finishing mill, and the rear end is directly connected to the front end of the track I of the supporting bridge 5, and the rear end of the track I of the supporting bridge 5 is directly connected to the front end of the fixed track 6. The bottom of the supporting bridge 5 is set to be hollow in order to install other existing equipment in the roller changing work of the finishing mill, and the upper part of the supporting bridge 5 provides a running track for the roll changing trailer 4. The fixed track 6 is two spaced tracks, which provide a running track for the roll changing trailer 4. The transverse shifting roll changing vehicle comprises a first transverse shifting roll changing frame 1 and a second transverse shifting roll changing frame 2. The first transverse shifting roll changing frame 1 and the second transverse shifting roll changing frame 2 are split-type. The side surfaces (parallel to the horizontal plane) perpendicular to and adjacent to the rolling direction on the two split-type transverse shifting roll changing frames are connected into one by a pin shaft. The piston rod of the transverse shifting hydraulic cylinder 7 is connected to the bottom surface of the first transverse shifting roll changing frame 1 perpendicular to the rolling direction.

[0050] The transverse roller conveyor includes a fixed transverse track and a swing transverse track 9, which is composed of two parallel tracks. The swing transverse track 9 is a part of the fixed transverse track in the middle that is disconnected, one end of the disconnected part of the track is hinged to the fixed transverse track on one side, and the other end is docked with the fixed transverse track on the other side (that is, the swing transverse track 9 and the fixed transverse track are in a disconnected state), the hinged ends and docking ends on the two transverse tracks are set in opposite positions, and the docking ends on the two transverse tracks are respectively connected to the piston rods of the two swing hydraulic cylinders 8, and the two swing hydraulic cylinders 8 are fixed between the two transverse tracks. Figure 5As shown, the hinged end on the left transverse track is directly opposite to the butt end on the right transverse track, that is, the line connecting the hinged end and the butt end is perpendicular to the length direction of the fixed transverse track. The butt end on the left transverse track is directly opposite to the hinged end on the right transverse track, that is, the line connecting the butt end and the hinged end is perpendicular to the length direction of the fixed transverse track. That is, the hinged ends on the two transverse tracks are arranged diagonally, and the butt ends are arranged diagonally. Docking means that the fixed transverse track and the swing transverse track 9 are disconnected and there is a gap.

[0051] Working principle of the present invention:

[0052] (1) Changing working rolls: Before changing rolls, the roll changing trolley 4 moves on the fixed track 6 and the supporting bridge 5, and pushes the new working roll ground in the grinding roll room to the placement position of the new working roll on the first transverse roll changing frame 1 (at this time, the center line of the new working roll is aligned with the center line of the roll working position on the finishing mill). The roll changing trolley 4 exits the transverse movement device range and returns to the supporting bridge 5 to wait. After that, the piston rod of the transverse hydraulic cylinder 7 retracts, and the first transverse roll changing frame 1 carries the new working roll and moves along the transverse movement track to the second transverse roll changing frame 2 aligned with the finishing mill. When changing rolls, the roll changing trailer 4 drives to the working roll changing position on the second transverse roll changing frame 2, and uses the hook to pull the old working roll on the finishing mill out of the finishing mill to the placement position of the old working roll on the second transverse roll changing frame 2 (at this time, the center line of the old working roll is aligned with the center line of the roll working position on the finishing mill), and the roll changing trailer 4 pulls the old working roll out of the transverse shifting device range and returns to the supporting bridge 5. The piston rod of the transverse hydraulic cylinder 7 extends out, and the first transverse roll-changing frame 1 moves, and the new working roll pre-placed on the first transverse roll-changing frame 1 is aligned with the center line of the roll working position on the finishing mill. The roll-changing trailer 4 starts and uses the hook to connect with the new working roll, and pushes the new working roll into the finishing mill to the roll working position. Then the roll-changing trailer 4 withdraws from the range of the transverse device and returns to the supporting bridge 5. The piston rod of the transverse hydraulic cylinder 7 retracts, pulling the first transverse roll-changing frame 1 to move, and the old working roll on the replaced second transverse roll-changing frame 2 is aligned with the center line of the roll working position on the finishing mill. The roll-changing trailer 4 moves to the front of the transverse device and hooks the old working roll. The roll-changing trailer 4 travels in the opposite direction, and pulls the old working roll to the grinding roll room, completing a roll changing operation.

[0053] (2) Changing the supporting rolls: When the supporting rolls need to be replaced, the overhead crane will lift the movable cover plate 3 between the corresponding transverse roll-changing vehicles of the adjacent finishing mills away from the transverse shifting device. The piston rod of the transverse shifting hydraulic cylinder 7 extends to move the second transverse shifting roll-changing frame 2 away from the center line of the supporting rolls, and the connecting pins between the two transverse shifting roll-changing frames are opened to separate the two. The piston rod of the transverse shifting hydraulic cylinder 7 retracts to pull the first transverse shifting roll-changing frame 1 to the outside of the center line of the supporting rolls on the other side, and connects the transverse shifting device to the corresponding limit device on the foundation to fix the transverse shifting device. The piston rod of the swing hydraulic cylinder 8 retracts to swing the swing transverse shifting rails 9 on the two transverse shifting rails inward to both sides of the center line of the supporting rolls (such as Figure 5 As shown, the left swinging transverse track 9 swings inward counterclockwise around the hinged end, and the right swinging transverse track 9 swings inward counterclockwise around the hinged end) to make room for the support roller replacement. Then, the support roller is replaced according to the support roller replacement procedure using the existing support roller replacement equipment. The subsequent support roller replacement operation is a prior art and will not be further described.

[0054] The above operation is a process of replacing the working rolls of a finishing mill. The device of the present invention can meet the requirements of replacing a single finishing mill or replacing multiple finishing mills at the same time.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A finishing rolling work roll changing device, characterized in that: include: A transverse movement device, a roll-changing trolley (4), a supporting bridge (5) and a fixed track (6); the bottom of the supporting bridge (5) is hollow, and a track I is provided on the top, and the track I overlaps with the fixed track (6) in the length direction; the roll-changing trolley (4) reciprocates on the transverse movement device, the supporting bridge (5) and the fixed track (6) through the running wheels I provided at the bottom thereof, pushes the new roll onto the transverse movement device, cooperates with the transverse movement device to finally push the new roll into the rolling mill frame, and transports the old roll pulled out of the rolling mill frame to the grinding roller room; The transverse movement device comprises a transverse movement roller changing vehicle, a transverse movement hydraulic cylinder (7) and a transverse movement track disposed at the bottom of the transverse movement roller changing vehicle; a travel wheel II is disposed at the bottom of the transverse movement roller changing vehicle, the transverse movement roller changing vehicle is driven by the transverse movement hydraulic cylinder (7) and reciprocates on the transverse movement track via the travel wheel II; the transverse movement track is disposed perpendicularly to the fixed track (6); The transverse roller-changing vehicle mainly consists of a first transverse roller-changing frame (1) and a second transverse roller-changing frame (2) which are split into two parts. The first transverse roller-changing frame (1) and the second transverse roller-changing frame (2) are provided with pin shaft mounting holes on adjacent sides. A pin shaft is matched and connected in the pin shaft mounting holes. The first transverse roller-changing frame (1) and the second transverse roller-changing frame (2) are connected via the pin shaft. The piston rod of the transverse hydraulic cylinder (7) is connected to the bottom surface of the first transverse roller-changing frame (1) which is parallel to the horizontal plane, so as to drive the first transverse roller-changing frame (1) to move back and forth. The first transverse roller-changing frame (1) and the second transverse roller-changing frame (2) are both provided with a track II on both sides in the width direction, and a chain transmission structure is provided in the middle, which is located between the two tracks II; the chain transmission structure is composed of pins with the same interval; the track II is in contact with the walking wheel or slide plate at the bottom of the working roller and the walking wheel I; the roller-changing trailer (4) is provided with a gear mechanism, and the gear mechanism is meshed and connected with the pin on the chain transmission structure; the front end of the roller-changing trailer (4) is provided with a roller-changing hook, and the roller-changing hook is connected to the bracket provided on the end surface of the lower working roller bearing seat; the gear mechanism is driven to rotate by the motor of the roller-changing trailer (4), and the gear mechanism is meshed and transmitted with the chain transmission structure, thereby driving the roller-changing trailer (4) to move, and driving the working roller assembly to move through the roller-changing hook; The first transverse roller-changing frame (1) is used to carry new rollers, and the second transverse roller-changing frame (2) is used to carry old rollers; During the roll changing process, the center line of the working roll on the first transverse roll changing frame (1) or the second transverse roll changing frame (2) coincides with the center line of the roll working position on the finishing mill; the track II on the first transverse roll changing frame (1) or the track II on the second transverse roll changing frame (2) coincides with the track I and the fixed track (6) in the length direction; The transverse movement track comprises a fixed transverse movement track and a swing transverse movement track (9), and the swing transverse movement track (9) is connected to the piston rod of the swing hydraulic cylinder (8); Two fixed transverse rails are arranged on both sides of the swing transverse rail (9), one end of the swing transverse rail (9) is hinged to one end of the fixed transverse rail on one side, and the other end is butted to one end of the fixed transverse rail on the other side; the hinged end and the butted end on the two parallel transverse rails are in opposite positions, the hinged end on one transverse rail is directly opposite to the butted end on the other transverse rail, and the butted end on one transverse rail is directly opposite to the hinged end on the other transverse rail; the butted ends on the two transverse rails are respectively connected to the piston rods of the two swing hydraulic cylinders (8), and the two swing hydraulic cylinders (8) are fixed between the two parallel transverse rails; The swinging transverse track (9) is driven by the swinging hydraulic cylinder (8) to rotate inward around the fixed transverse track. The rotation of the swinging transverse track (9) disconnects a portion of the transverse track facing the window of the finishing mill, thereby freeing up space for changing the support rolls.

2. The finishing rolling work roll changing device according to claim 1, characterized in that: The transverse shifting device, the roll-changing trolley (4), the supporting bridge (5) and the fixed rail (6) are used in combination, and one set is provided for each finishing mill.

3. The finishing rolling work roll changing device according to claim 1 or 2, characterized in that: A movable cover plate (3) is provided between two adjacent transverse shifting devices, and the movable cover plate (3) is connected to the transverse shifting device by means of a pin shaft.

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