Roll changing device for rolling mills

Abstract

The application discloses a rolling mill roll changing device, and solves the technical problems of time-consuming and labor-consuming in the prior art. The rolling mill roll changing device comprises a supporting frame, a limiting piece and a hoisting assembly. The supporting frame comprises a supporting piece and a connecting piece. The supporting piece is used for moving into or out of a frame hole of a loop door of a rolling mill along a vertical direction. The supporting piece is in clearance fit with the frame hole. The limiting piece is sleeved on an outer wall of the supporting piece and is connected with the supporting piece. The limiting piece is used for abutting against a frame of the loop door, so that the supporting frame is limited along the vertical direction. The hoisting assembly comprises a connecting frame, a driving assembly and a rope frame. The connecting frame is connected with the connecting piece. The driving assembly comprises a driving piece and a transmission assembly. The transmission assembly is connected with the rope frame. Ropes of the rope frame are used for connecting supporting rollers. The rolling mill roll changing device can reduce manual carrying. The roll changing device is used for roll changing, time and labor cost are saved. Two persons can complete the replacement of one supporting roller in 10 minutes, and the safety hazard of roll bruising personnel is avoided.

Description

Technical Field

[0001] This application belongs to the field of roll changing technology, specifically relating to a roll changing device for a rolling mill. Background Technology

[0002] The six-stand rolling mill is the world's first to utilize small-diameter rolls to produce high-grade non-oriented and oriented silicon steel. The looper rolls on this production line operate at high speed continuously during production. Due to the large installed capacity, the entire looper has hundreds of rolls, requiring monthly replacement of worn rolls during maintenance. The looper rolls consist of five layers, distributed at a height of 1 to 5 meters above the ground. Replacing a roll requires three people to remove the old roll from the frame, carry it to the ground by hand, and then manually lift and place the new roll onto the frame. Each roll weighs approximately 50 kilograms, making manual transport of the rolls to a height of 1 to 5 meters time-consuming, labor-intensive, and posing a risk of injury from falling rolls. Summary of the Invention

[0003] To address the current technical problem of time-consuming and labor-intensive roll changing, this application provides a roll changing device for rolling mills.

[0004] In a first aspect of this application, a rolling mill roll changing device is provided, comprising: A support frame includes support members and connectors that are angled and interconnected. The support members are used to move vertically into or out of the frame holes of the rolling mill's loop gate. The support members are clearance-fitted with the frame holes. A limiting member, which is ring-shaped, is sleeved on the outer wall of the support member and connected to the support member. The limiting member is used to abut against the frame of the hinged door so that the support frame is limited in the vertical direction. The lifting assembly includes a connecting frame, a drive assembly disposed on the connecting frame, and a rope frame. The connecting frame is connected to the connecting member. The drive assembly includes a drive member and a transmission assembly connected to the output end of the drive member. The transmission assembly is connected to the rope frame, and the ropes of the rope frame are used to connect idler rollers.

[0005] In some embodiments, the support member is a cylindrical rod; the connector is plate-shaped, and the support member is welded to the connector; And / or, the support member is perpendicular to the connector.

[0006] In some embodiments, an inclined reinforcing rod is further provided between the support member and the connector, and both the reinforcing rod and the support member are connected to the connector; The limiting member is located below the reinforcing rod.

[0007] In some embodiments, the connecting frame is in the shape of a door, and the connecting frame is provided with a first vertical plate, a second vertical plate and a horizontal plate. The horizontal plate of the connecting frame is provided with a first connecting hole, and the connecting member is provided with a second connecting hole corresponding to the first connecting hole. The connecting frame and the connecting member are connected by bolts and nuts, and the bolts pass through the first connecting hole and the second connecting hole and are fastened by nuts.

[0008] In some embodiments, the lifting assembly is further provided with a locking assembly, the drive component is mounted on the first vertical plate, and the locking assembly is mounted on the second vertical plate.

[0009] In some embodiments, the transmission assembly includes a first transmission shaft, a first gear, a second gear, and a second transmission shaft, wherein the first gear is rotatably connected to both the first vertical plate and the second vertical plate via the first transmission shaft; The first gear meshes with the second gear, the second gear is coaxially connected to the rope frame, and both the second gear and the rope frame are rotatably connected to the first vertical plate and the second vertical plate through the second transmission shaft.

[0010] In some embodiments, the gear ring of the second gear is larger than the gear ring of the first gear.

[0011] In some embodiments, the drive element includes a rotating handle connected to the first drive shaft; And / or, the rope frame includes a rope frame and a rope wound around the rope frame, the rope being provided with a locking hook.

[0012] In some embodiments, the locking assembly includes a locking gear, an elastic element, and a locking rod. The locking gear is coaxially connected to the first drive shaft and mounted on the outer wall of the second vertical plate. One end of the elastic element is connected to the outer wall of the second vertical plate, and the other end of the elastic element is rotatably connected to one end of the locking rod and is angled to the locking rod. The locking rod is operable to abut against or separate from the locking gear.

[0013] In some embodiments, the locking assembly further includes a first limiting rod and a second limiting rod, the first limiting rod and the second limiting rod being located on different sides of the elastic member, and the first limiting rod being close to the locking gear.

[0014] A rolling mill roll changing device according to one or more embodiments of this application includes a support frame, a limiting member, and a lifting assembly. The support frame includes a support member and a connecting member that are angled and connected to each other. The support member is used to move vertically into or out of the frame hole of the rolling mill's loop gate, and the support member is clearance-fitted with the frame hole. The limiting member is annular, sleeved on the outer wall of the support member and connected to the support member. The limiting member abuts against the frame of the loop gate to limit the support frame vertically. The lifting assembly includes a connecting frame, a drive assembly disposed on the connecting frame, and a rope frame. The connecting frame is connected to the connecting member. The drive assembly includes a drive member and a transmission assembly connected to the output end of the drive member. The transmission assembly is connected to the rope frame, and the ropes of the rope frame are used to connect idler rolls. Therefore, the use of this roll changing device can reduce manual handling. Roll changing using the roll changing device saves time and labor costs. Only two people are needed to complete the replacement of one idler roll in 10 minutes, saving 50% of the time, while avoiding the safety hazard of rolls falling and injuring personnel. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a rolling mill roll changing device in one or more embodiments of this application is shown.

[0016] Figure 2 It shows Figure 1 A schematic diagram of the locking mechanism where the locking rod and locking gear engage to lock the mechanism.

[0017] Figure 3 It shows Figure 1 A schematic diagram of the structure after the locking rod and locking gear are released from locking.

[0018] Figure 4 It shows Figure 1 A schematic diagram of the limiting component.

[0019] Figure 5 It shows Figure 1 A schematic diagram of the support frame.

[0020] Explanation of reference numerals in the attached drawings: 100-roll changing device for rolling mill, 110-support frame, 111-support component, 112-connector, 1121-second connecting hole, 113-reinforcing rod, 120-limiting component, 130-lifting assembly, 131-connecting frame, 1311-first vertical plate, 1312-second vertical plate, 1313-horizontal plate, 1314-first connecting hole, 132-driving component, 133-transmission assembly, 1331-first transmission shaft, 1332-first gear, 1333-second gear, 134-rope frame, 135-locking assembly, 1351-locking gear, 1352-elastic component, 1353-locking rod, 1354-first limiting rod, 1355-second limiting rod. Detailed Implementation

[0021] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] Please see Figure 1 , Figure 2 and Figure 3 According to a first aspect of this application, a rolling mill roll changing device 100 is provided, including a support frame 110, a limiting member 120, and a lifting assembly 130. The support frame 110 includes a support member 111 and a connecting member 112 that are angled and connected to each other. The support member 111 is used to move vertically into or out of the frame hole of the rolling mill's loop gate, and the support member 111 is clearance-fitted with the frame hole. The limiting member 120 is annular and is sleeved on the outer wall of the support member 111 and is flush with the support member 111. 111 is connected, and the limiting member 120 is used to abut against the frame of the trapdoor so that the support frame 110 is limited in the vertical direction; the lifting assembly 130 includes a connecting frame 131, a drive assembly disposed on the connecting frame 131, and a rope frame 134. The connecting frame 131 is connected to the connecting member 112. The drive assembly includes a drive member 132 and a transmission assembly 133 connected to the output end of the drive member 132. The transmission assembly 133 is connected to the rope frame 134, and the rope of the rope frame 134 is used to connect the idler roller.

[0023] When the roll changing device is needed to lift the idler roll, the support frame 110 can be inserted into the frame hole of the rolling mill's looper gate. The limiting member 120 can be used for vertical positioning of the entire fixture. When the frame of the looper gate contacts the limiting member 120, the entire roll changing device is vertically fixed. The old idler roll is removed and connected to the old roll using the lifting device's rope. The transmission assembly 133 is activated by the drive member 132, thereby driving the rope of the rope frame 134 to rise, thus lifting the idler roll. When the roll changing device is needed to lower the idler roll, the entire roll changing device can be rotated first. The gap between the support member 111 and the frame hole is set. When the support frame 110 needs to be rotated, the support member 111 can be rotated, thereby driving the entire roll changing device to rotate a certain angle, facilitating the lifting of the idler roll and then lowering it to the ground. Hook the new roller with the lifting mechanism, start the transmission assembly 133 through the drive component 132, thereby driving the rope of the rope frame 134 to rise, lift the new roller to the roller replacement position and then reinstall it. After reinstallation, remove the support component 111 from the hole to complete the work.

[0024] Therefore, the roller changing device used in this application can reduce manual handling. Changing rollers using this device saves time and labor costs. Only two people are needed to complete the replacement of one idler roller in 10 minutes, saving 50% of the time, while also avoiding the safety hazard of rollers falling and injuring personnel.

[0025] In some embodiments, the support member 111 is a cylindrical rod; this facilitates insertion of the support member 111 into the frame hole of the hinged door, with a clearance fit between the support member 111 and the frame hole, allowing for easy rotation of the support member 111. After lifting the idler roller to a suitable height, the roller changing device is rotated as a whole by an angle of 30° to 60°, which can be 30°, 40°, 45°, 50°, or 60°. The idler roller is then slowly lowered using the lifting device, facilitating its lifting and subsequent descent to the placement area, reducing manual handling.

[0026] like Figure 1 and Figure 5 As shown, in some embodiments, the connector 112 is plate-shaped, and the support 111 is welded to the connector 112. The plate-shaped structure of the connector 112 provides a stable welding surface for the cylindrical support 111, so that the welding point can be evenly stressed, which enhances the overall structural strength. The welding connection between the support 111 and the connector 112 not only ensures a tight fit between the two, but also effectively improves the load-bearing capacity and stability of the overall device, enabling it to better withstand external loads.

[0027] like Figure 1 and Figure 5 As shown, in some embodiments, the support member 111 and the connector 112 are perpendicular to each other. The support member 111 is vertically moved into the frame hole of the looper gate of the rolling mill, and the connector is horizontally set. The lifting device can lift or lower the idler roller in the vertical direction, ensuring that the entire roller changing device can be installed on the frame of the looper gate in the vertical direction, which facilitates the lifting of the idler roller.

[0028] like Figure 1 and Figure 5 As shown, in some embodiments, an inclined reinforcing rod 113 is further provided between the support member 111 and the connector 112. Both the reinforcing rod 113 and the support member 111 are connected to the connector 112. The inclined reinforcing rod 113 between the support member 111 and the connector 112 improves the stability of the overall mechanism and prevents the support frame 110 from tilting during lifting. This better bears the load, prevents lateral tilting, increases rigidity, reduces deformation, and thus ensures the stability and reliability of the structure.

[0029] like Figure 1 , Figure 4 and Figure 5As shown, in some other embodiments, the limiting member 120 is located below the reinforcing rod, ensuring that the limiting member 120 can abut against the outer edge of the frame hole, thereby limiting the support frame 110 in the vertical direction.

[0030] like Figure 1 and Figure 2 As shown, in some embodiments, the connecting frame 131 is U-shaped. The connecting frame 131 has a first vertical plate 1311, a second vertical plate 1312, and a horizontal plate 1313. The horizontal plate 1313 of the connecting frame 131 has a first connecting hole 1314, and the connecting member 112 has a second connecting hole 1121 corresponding to the first connecting hole 1314. The connecting frame 131 and the connecting member 112 are connected by bolts and nuts. The bolts pass through the first connecting hole 1314 and the second connecting hole 1121 and are tightened by nuts. This facilitates the installation and disassembly of the connecting frame 131. When the lifting assembly 130 wears out and needs replacement or maintenance, the connecting frame 131 can be disassembled and replaced.

[0031] like Figure 1 , Figure 2 , Figure 3 As shown, in some embodiments, the lifting assembly 130 is further provided with a locking assembly 135, the driving member 132 is mounted on the first vertical plate 1311, and the locking assembly 135 is mounted on the second vertical plate 1312. In some embodiments, the driving member 132 can be a manual crank, that is, the transmission assembly 133 is rotated on one side by the driving member 132, thereby lifting or lowering the idler roller. The locking assembly 135 and the driving member 132 are mounted on different sides of the connecting frame 131 to avoid interference between the locking assembly 135 and the driving member 132 during movement, ensuring the stability of the overall operation; when locking is required, it can be operated directly on the second vertical plate 1312, which is convenient.

[0032] like Figure 2 As shown, in some embodiments, the transmission assembly 133 includes a first transmission shaft 1331, a first gear 1332, a second gear 1333, and a second transmission shaft. The first gear 1332 is rotatably connected to both the first vertical plate 1311 and the second vertical plate 1312 via the first transmission shaft 1331. The first gear 1332 and the second gear 1333 mesh with each other. The second gear 1333 is coaxially connected to the rope frame 134. Both the second gear 1333 and the rope frame 134 are rotatably connected to both the first vertical plate 1311 and the second vertical plate 1312 via the second transmission shaft. The driving member 132 drives the first gear 1332 on the first transmission shaft 1331 to rotate. The first gear 1332 drives the second gear 1333 to rotate. The second gear 1333 drives the rope frame 134 to rotate via the second transmission shaft, thereby causing the idler roller connected to the rope frame 134 to rise or fall.

[0033] like Figure 2As shown, in some embodiments, the gear ring of the second gear 1333 is larger than that of the first gear 1332. The first gear 1332 drives the second gear 1333 to rotate. The rotational speed of the second gear 1333 is lower than that of the first gear 1332, and the torque of the larger gear is increased. This allows the device to withstand greater forces, thereby ensuring the stability of the lifting process.

[0034] like Figure 2 As shown, in some embodiments, the drive unit 132 includes a rotating handle connected to a first drive shaft 1331. The rotating handle is located on the first vertical plate 1311, designated as side A, and the locking assembly 135 is located on the second vertical plate, designated as side B. When the operator faces the rotating handle (side A), rotating the handle counterclockwise causes the first gear 1332 to rotate clockwise (viewed from side B) and the second gear 1333 to rotate counterclockwise (viewed from side B), raising the rope and lifting the idler roller. When the operator faces the rotating handle (side A), rotating the handle clockwise causes the first gear 1332 to rotate counterclockwise (viewed from side B) and the second gear 1333 to rotate clockwise (viewed from side B), lowering the rope and lowering the idler roller.

[0035] like Figure 2 As shown, in some embodiments, the rope frame 134 includes the rope frame 134 and a rope wound around the rope frame 134. The rope is provided with a locking hook. The idler roller is tied with a wire rope or sling, and then the wire rope or sling is hung at the locking hook, so that the idler roller can be lifted or lowered.

[0036] like Figure 2 and Figure 3 As shown, in some embodiments, the locking assembly 135 includes a locking gear 1351, an elastic element 1352, and a locking rod 1353. The locking gear 1351 is coaxially connected to the first transmission shaft 1331 and mounted on the outer wall of the second vertical plate 1312. One end of the elastic element 1352 is connected to the outer wall of the second vertical plate 1312, and the other end of the elastic element 1352 is rotatably connected to one end of the locking rod 1353 and is angled to the locking rod 1353. The locking rod 1353 can be operably engaged with or disengaged from the locking gear 1351. The elastic element 1352 is a spring. When it is necessary to lock the locking gear 1351, the locking rod 1353 can be rotated to engage with the locking gear 1351. When it is not necessary to lock the locking gear 1351, the locking rod 1353 can be rotated to disengage from the locking gear 1351. The locking rod 1353 directly abuts or separates from the locking gear 1351, which will not cause wear to the first gear 1332 and the second gear 1333. After the locking gear 1351 is worn, the locking gear 1351 can be replaced directly without replacing the first gear 1332 and the second gear 1333, making the operation simple.

[0037] like Figure 2 and Figure 3As shown, in some embodiments, the locking assembly 135 further includes a first limiting rod 1354 and a second limiting rod 1355, which are located on different sides of the elastic member 1352, with the first limiting rod 1354 close to the locking gear 1351. The locking rod 1353 rotates between the first limiting rod 1354 and the second limiting rod 1355. When the locking rod 1353 rotates to engage with the locking gear 1351, it abuts against the first limiting rod 1354. When the locking rod 1353 rotates to disengage from the locking gear 1351, it abuts against the second limiting rod 1355.

[0038] like Figure 2 As shown, when lifting or lowering the idler roller, if the transmission assembly 133 needs to be locked, the locking rod 1353 can be engaged with the locking gear 1351. When the drive component 132 is not rotating, the rope frame 134 is prevented from rotating clockwise (viewed from side B). At this time, the first gear 1332 has a counterclockwise (viewed from side B) rotational force, which engages the locking rod 1353 with the locking gear 1351, preventing the first gear 1332 from rotating counterclockwise (viewed from side B). The first limit rod 1354 limits the locking rod 1353, preventing the locking rod 1353 from rotating upward, thereby tightening the locking rod 1353 and preventing the first gear 1332 from rotating counterclockwise (viewed from side B).

[0039] like Figure 3 As shown, when it is not necessary to lock the transmission assembly 133, the locking rod 1353 can be separated from the locking gear 1351, and the locking rod 1353 can be rotated to abut against the second limiting rod 1355. The elastic member 1352 applies a force to the locking member to the right and downward, and the second limiting rod 1355 abuts against the locking member and applies a force to the locking rod 1353 to the left and downward, thereby limiting the locking member in this position.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0042] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0044] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A rolling mill roll changing device, characterized in that, include: A support frame includes support members and connectors that are angled and interconnected. The support members are used to move vertically into or out of the frame holes of the rolling mill's loop gate. The support members are clearance-fitted with the frame holes. A limiting member, which is ring-shaped, is sleeved on the outer wall of the support member and connected to the support member. The limiting member is used to abut against the frame of the hinged door so that the support frame is limited in the vertical direction. The lifting assembly includes a connecting frame, a drive assembly disposed on the connecting frame, and a rope frame. The connecting frame is connected to the connecting member. The drive assembly includes a drive member and a transmission assembly connected to the output end of the drive member. The transmission assembly is connected to the rope frame, and the ropes of the rope frame are used to connect idler rollers.

2. The rolling mill roll changing device according to claim 1, characterized in that, The support member is a cylindrical rod; the connector is plate-shaped, and the support member is welded to the connector. And / or, the support member is perpendicular to the connector.

3. The rolling mill roll changing device according to claim 1, characterized in that, An inclined reinforcing rod is also provided between the support member and the connector, and both the reinforcing rod and the support member are connected to the connector; The limiting member is located below the reinforcing rod.

4. The rolling mill roll changing device according to any one of claims 1-3, characterized in that, The connecting frame is in the shape of a door. The connecting frame has a first vertical plate, a second vertical plate and a horizontal plate. The horizontal plate of the connecting frame has a first connecting hole. The connecting member has a second connecting hole corresponding to the first connecting hole. The connecting frame and the connecting member are connected by bolts and nuts. The bolts pass through the first connecting hole and the second connecting hole and are fastened by nuts.

5. The rolling mill roll changing device according to claim 4, characterized in that, The lifting assembly is further provided with a locking assembly, the driving component is installed on the first vertical plate, and the locking assembly is installed on the second vertical plate.

6. The rolling mill roll changing device according to claim 5, characterized in that, The transmission assembly includes a first transmission shaft, a first gear, a second gear, and a second transmission shaft. The first gear is rotatably connected to both the first vertical plate and the second vertical plate via the first transmission shaft. The first gear meshes with the second gear, the second gear is coaxially connected to the rope frame, and both the second gear and the rope frame are rotatably connected to the first vertical plate and the second vertical plate through the second transmission shaft.

7. The rolling mill roll changing device according to claim 6, characterized in that, The gear ring of the second gear is larger than the gear ring of the first gear.

8. The rolling mill roll changing device according to claim 6, characterized in that, The driving component includes a rotating handle, which is connected to the first drive shaft; And / or, the rope frame includes a rope frame and a rope wound around the rope frame, the rope being provided with a locking hook.

9. The rolling mill roll changing device according to claim 6, characterized in that, The locking assembly includes a locking gear, an elastic element, and a locking rod. The locking gear is coaxially connected to the first transmission shaft and installed on the outer wall of the second vertical plate. One end of the elastic element is connected to the outer wall of the second vertical plate, and the other end of the elastic element is rotatably connected to one end of the locking rod and is set at an angle to the locking rod. The locking rod can be operable to abut against or separate from the locking gear.

10. The rolling mill roll changing device according to claim 9, characterized in that, The locking assembly further includes a first limiting rod and a second limiting rod, the first limiting rod and the second limiting rod being located on different sides of the elastic member, and the first limiting rod being close to the locking gear.

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