Limiting device for hot mill
By using the limiting plate and locking components of the limiting device, the problem of billet position deviation during hot rolling is solved, achieving uniform distribution of roll pressure and improving the quality of the hot rolling mill, while also providing a safe operating environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI HONGLI STEEL ROLLING CO LTD
- Filing Date
- 2025-05-17
- Publication Date
- 2026-04-28
AI Technical Summary
During the hot rolling process, the billet is prone to positional displacement due to equipment vibration or external force during the conveying process, resulting in uneven thickness of the rolled product and reducing the rolling quality of the hot rolling mill.
A limiting device is adopted, including a base plate, a bidirectional lead screw, a limiting plate, and an operating component. The operating component drives the bidirectional lead screw to move the limiting plate to abut against both sides of the billet. Combined with a locking component and a water cooling pipe, the billet position is ensured to be stable and deviation is prevented.
It effectively reduces the positional shift of the billet during the conveying process, ensures uniform distribution of roll pressure, improves the rolling quality of the hot rolling mill, and provides a safe operating environment.
Smart Images
Figure CN224168350U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of hot rolling equipment technology, and in particular to a limiting device for a hot rolling mill. Background Technology
[0002] Hot rolling mills are key equipment in the metal processing field and are widely used in industries such as steel and non-ferrous metals. Their working principle involves heating metal billets to above their recrystallization temperature, and then using the strong pressure of the rolls to cause plastic deformation, thereby efficiently producing various sheet metal products.
[0003] However, during the rolling process, the billet needs to be conveyed to the rolls via a conveying device. During the conveying process, the billet is prone to positional deviation due to equipment vibration or external forces. Once the billet is misaligned, the pressure applied by the rolls to the billet cannot be evenly distributed, resulting in uneven thickness of the rolled product and reduced quality of hot rolling mill, which is a significant deficiency. Utility Model Content
[0004] In order to improve the rolling quality of hot rolling mills, this application provides a limiting device for hot rolling mills.
[0005] The limiting device for a hot rolling mill provided in this application adopts the following technical solution:
[0006] A limiting device for a hot rolling mill includes a base plate mounted on the hot rolling mill body. A sliding groove is formed on the base plate, and a bidirectional lead screw is rotatably connected in the sliding groove. Two sections of the bidirectional lead screw with opposite thread directions are threadedly connected to connecting blocks. The connecting blocks are slidably connected in the sliding groove. A limiting plate for limiting the steel plate is provided on the connecting blocks. An operating component for driving the bidirectional lead screw to rotate is provided on the base plate.
[0007] By adopting the above technical solution, before rolling begins, the worker drives the bidirectional lead screw to rotate through the operating components. Guided by the connecting block and the sliding groove, the bidirectional lead screw drives the two limiting plates to move towards the billet until the limiting plates abut against the two sides of the billet, thereby limiting the position of the billet. This effectively reduces the possibility of the billet shifting due to external factors during the conveying process, thus ensuring that the pressure of the rolls is evenly distributed on the billet and improving the rolling quality of the hot rolling mill.
[0008] Optionally, the substrate has a drive groove communicating with the sliding groove. The operating component includes a bevel gear one coaxially arranged with the bidirectional lead screw. A drive rod is rotatably connected in the drive groove. A bevel gear two coaxially arranged on the drive rod and meshing with the bevel gear one is also arranged on the drive rod. The end of the drive rod extends to the outer surface of the substrate. A locking component is provided in the drive groove to restrict the rotation of the drive rod.
[0009] By adopting the above technical solution, when the position of the limiting plate needs to be adjusted, the worker rotates the drive rod, which drives the second bevel gear to rotate. The second bevel gear drives the meshing first bevel gear to rotate, which in turn drives the double-acting screw to rotate. This causes the double-acting screw to move the two limiting plates to limit the position of the billet. After the adjustment is completed, the worker restricts the rotation of the drive rod by locking the component, reducing the possibility of the double-acting screw rotating due to worker accidental contact or equipment vibration. This achieves the locking of the position of the two limiting plates, ensuring that the limiting plates effectively limit the position of the billet throughout the rolling process, and further reducing the possibility of the billet's position shift.
[0010] Optionally, the locking assembly includes a limiting ring slidably sleeved on the outer surface of the drive rod, the drive rod having a moving groove along the axial direction, the inner sidewall of the limiting ring having a moving block that slidably engages with the moving groove, the base plate having a limiting groove communicating with the drive groove, and a plurality of rotation limiting bolts threadedly connected to the base plate, the ends of the rotation limiting bolts extending into the limiting groove, the rotation limiting bolts pressing the limiting ring against the inner sidewall of the limiting groove.
[0011] By adopting the above technical solution, after the two limit plates are adjusted, the worker rotates the limit bolt. When the limit bolt rotates, it will push the limit ring to move towards the inside of the limit groove. As the limit bolt is tightened, the friction between the limit ring and the inner wall of the limit groove gradually increases, thereby effectively limiting the rotation of the limit ring and thus limiting the rotation of the drive shaft.
[0012] Optionally, a friction ring is provided on the surface of the limiting ring away from the rotation limiting bolt. The friction ring is made of an elastic material. A receiving groove is provided on the inner sidewall of the limiting groove to accommodate the friction ring. The cross-section of the friction ring and the receiving groove is V-shaped. When the rotation limiting bolt presses the limiting ring against the limiting ring, the friction ring fills the receiving groove.
[0013] By adopting the above technical solution, as the rotation limiting bolt is continuously screwed in, the friction ring is gradually inserted into the receiving groove. The pressure generated by the limiting bolt on the limiting ring causes the friction ring to fill the receiving groove, thereby further increasing the friction intensity between the limiting ring and the inner wall of the limiting groove and improving the locking effect of the locking assembly.
[0014] When readjustment is required, the worker loosens the limiting bolt, and the pressure of the limiting bolt on the limiting ring gradually decreases. Under the action of its own elasticity, the friction ring pushes the limiting ring away from the inner wall of the limiting groove, so that the friction between the limiting ring and the inner wall of the limiting groove is rapidly reduced, and the rotation restriction of the drive rod is released. At this time, the worker can easily rotate the drive rod to achieve readjustment.
[0015] Optionally, high-temperature resistant rubber pads are provided on the opposing surfaces of the limiting plates.
[0016] By adopting the above technical solution, the high-temperature resistant rubber pad can effectively resist the influence of high temperature environment on the limiting plate, reduce the possibility of deformation of the limiting plate due to high temperature, and thus ensure the structural stability of the limiting device.
[0017] Optionally, the substrate is embedded with a water-cooling pipe, the water-cooling pipe is filled with cooling water, and the two ends of the water-cooling pipe are respectively connected to an inlet connector and an outlet connector, and the inlet connector and the outlet connector are externally connected to a circulating cooling water device.
[0018] By adopting the above technical solution, during the rolling process, cooling water flows in the water-cooling pipe and effectively absorbs the heat on the surface of the substrate, thereby effectively reducing the temperature of the substrate and providing workers with a relatively safe low-temperature operating environment, reducing the possibility of workers being burned during operation.
[0019] Optionally, a telescopic cover is provided on the opposing surfaces of the two connecting blocks. The end of the telescopic cover away from the connecting block is provided on the inner wall of the sliding groove, and a telescopic cover is provided between the opposing surfaces of the two connecting blocks.
[0020] By adopting the above technical solution, when the worker adjusts the distance between the two limiting plates, the telescopic cover one and the telescopic cover two work together to always block the sliding groove, thereby preventing the blank debris from entering the sliding groove, effectively reducing the debris from getting stuck in the connecting block or the bidirectional lead screw, ensuring that the connecting block slides smoothly in the sliding groove, and ensuring the stability of the limiting plate adjustment process.
[0021] Optionally, the outer surface of the substrate is provided with scale markings for indicating the positions of the two limiting plates.
[0022] By adopting the above technical solution, during the adjustment process, workers can know the real-time distance between the two limit plates according to the scale markings, which helps workers quickly adjust the limit plates to the required position and significantly improves the adjustment efficiency of the limit plates.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. In this embodiment of the application, by setting up an operating component, a bidirectional lead screw and two limiting plates, the worker rotates the bidirectional lead screw through the operating component. The bidirectional lead screw drives the two limiting plates to move towards the billet until the limiting plates abut against the two sides of the billet, thereby limiting the position of the billet. This effectively reduces the possibility of the billet shifting due to external factors during the conveying process, thereby ensuring that the pressure of the rolls is evenly distributed on the billet and improving the rolling quality of the hot rolling mill.
[0025] 2. By setting a locking component, after adjustment, the worker can restrict the rotation of the drive rod by locking the component, reducing the possibility of the bidirectional lead screw rotating due to worker accidental contact or equipment vibration, thereby locking the positions of the two limit plates and ensuring that the limit plates effectively limit the position of the billet throughout the rolling process, further reducing the possibility of the billet position shift.
[0026] 3. By setting up water cooling pipes, the cooling water flows in the water cooling pipes during the rolling process and effectively absorbs the heat on the surface of the substrate, thereby effectively reducing the temperature of the substrate and providing workers with a relatively safe low-temperature operating environment, reducing the possibility of workers being burned during operation. Attached Figure Description
[0027] Figure 1 This is a structural diagram of this application.
[0028] Figure 2 This is a cross-sectional view of the substrate in an embodiment of this application.
[0029] Figure 3 yes Figure 2 Enlarged view of point A in the middle.
[0030] Explanation of reference numerals in the attached drawings: 01, hot rolling mill; 1, base plate; 101, scale marking; 2, sliding groove; 21, double-acting lead screw; 22, connecting block; 221, telescopic cover one; 222, telescopic cover two; 23, limiting plate; 231, high-temperature resistant rubber pad; 3, drive groove; 4, operating assembly; 41, bevel gear one; 42, bevel gear two; 43, drive rod; 431, moving groove; 5, water-cooled pipe; 51, liquid inlet connector; 52, liquid outlet connector; 6, locking assembly; 61, limiting ring; 62, rotation limiting bolt; 63, friction ring; 611, moving block; 7, limiting groove; 71, receiving groove. Detailed Implementation
[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0032] This application discloses a limiting device for a hot rolling mill.
[0033] Reference Figure 1 and Figure 2 A limiting device for a hot rolling mill includes a base plate 1, which is fixedly mounted on the body of the hot rolling mill 01. A sliding groove 2 is provided on the base plate 1 along its length. A bidirectional lead screw 21 is rotatably connected in the sliding groove 2. Connecting blocks 22 are threadedly connected to the two sections of the bidirectional lead screw 21 with opposite thread directions. The connecting blocks 22 are slidably connected in the sliding groove 2. A limiting plate 23 is fixedly installed on each connecting block 22. High-temperature resistant rubber pads 231 are fixedly installed on the opposite surfaces of the limiting plates 23.
[0034] Reference Figure 1 and Figure 2 A drive groove 3 communicating with the sliding groove 2 is provided on the substrate 1. The drive groove 3 is set perpendicular to the sliding groove 2. An operating component 4 is provided in the drive groove 3. Specifically, the operating component 4 includes a bevel gear 41 that is coaxially fixedly connected to the bidirectional lead screw 21. A bevel gear 42 that meshes with the bevel gear 41 is rotatably connected in the drive groove 3. A drive rod 43 is coaxially fixedly connected to the bevel gear 42. The drive rod 43 is rotatably set in the drive groove 3. The end of the drive rod 43 extends to the outer surface of the substrate 1.
[0035] Before rolling begins, the worker rotates the drive rod 43, which drives the second bevel gear 42 to rotate. The second bevel gear 42 drives the meshing first bevel gear 41 to rotate, which in turn drives the double-acting screw 21 to rotate. Guided by the connecting block 22 and the sliding groove 2, the double-acting screw 21 drives the two limiting plates 23 to move towards the billet until the limiting plates 23 abut against the two sides of the billet, thus limiting the position of the billet. This effectively reduces the possibility of the billet shifting due to external factors during the conveying process, thereby ensuring that the pressure of the rolls is evenly distributed on the billet and improving the rolling quality of the hot rolling mill 01.
[0036] Reference Figure 1 and Figure 2 The outer surface of the substrate 1 is provided with scale markings 101 for indicating the positions of the two limiting plates 23. During the adjustment process, the worker can know the real-time distance between the two limiting plates 23 according to the scale markings 101, thereby helping the worker to quickly adjust the limiting plates 23 to the required position.
[0037] Reference Figure 1 and Figure 2 Water cooling pipes 5 are embedded on opposite sides of the substrate 1. Each water cooling pipe 5 is filled with cooling water. The two ends of the water cooling pipe 5 are respectively connected to an inlet connector 51 and an outlet connector 52. The inlet connector 51 and the outlet connector 52 are connected to a circulating cooling water device. During the rolling process, the cooling water flows in the water cooling pipes 5 and effectively absorbs the heat on the surface of the substrate 1, thereby effectively reducing the temperature of the substrate 1 and providing a relatively safe low-temperature operating environment for workers, reducing the possibility of workers being burned during operation.
[0038] Reference Figure 1 and Figure 2 Telescopic cover 221 is fixedly installed on the opposing surfaces of the two connecting blocks 22. The end of telescopic cover 221 away from the connecting block 22 is fixedly connected to the inner wall of the sliding groove 2. Telescopic cover 222 is provided between the opposing surfaces of the two connecting blocks 22. The two ends of telescopic cover 222 are fixedly connected to the connecting blocks 22 respectively. In this embodiment, both telescopic cover 221 and telescopic cover 222 are corrugated covers.
[0039] When the worker adjusts the distance between the two limiting plates 23, the telescopic cover 1 221 and the telescopic cover 222 work together to always block the sliding groove 2, thereby preventing the blank debris from entering the sliding groove 2, effectively reducing the debris from getting stuck in the connecting block 22 or the bidirectional lead screw 21, ensuring that the connecting block 22 slides smoothly in the sliding groove 2, and ensuring the stability of the adjustment process of the limiting plate 23.
[0040] Reference Figure 2 and Figure 3 A locking component 6 is provided in the drive groove 3. The locking component 6 includes a limiting ring 61 that is slidably sleeved on the outer surface of the drive rod 43. A moving groove 431 is opened along the axial direction on the opposite outer surface of the drive rod 43. A moving block 611 that is slidably connected in the moving groove 431 is fixedly connected to the inner side wall opposite to the limiting ring 61. Under the restriction of the moving block 611 and the moving groove 431, the limiting ring 61 cannot rotate relative to the drive rod 43.
[0041] Reference Figure 2 and Figure 3 The substrate 1 has a limiting groove 7 that communicates with the drive groove 3. The limiting ring 61 is slidably connected inside the limiting groove 7. The substrate 1 is threaded with a plurality of limiting bolts 62. In this embodiment, there are two limiting bolts 62. The two limiting bolts 62 are respectively arranged on both sides of the drive rod 43 in the radial direction. The end of each limiting bolt 62 extends into the limiting groove 7.
[0042] Reference Figure 2 and Figure 3 A friction ring 63 is fixedly connected to the surface of the limiting ring 61 away from the rotation limiting bolt 62. The friction ring 63 is made of elastic material. A receiving groove 71 is provided on the inner wall of the limiting groove 7 to accommodate the friction ring 63. The cross-section of the friction ring 63 and the receiving groove 71 is V-shaped. When the rotation limiting bolt 62 presses the limiting ring 61 against the inner wall of the limiting groove 7, the friction ring 63 fills the receiving groove 71.
[0043] After the two limiting plates 23 are adjusted, the worker rotates the limiting bolt 62. When the limiting bolt 62 rotates, it pushes the limiting ring 61 toward the inside of the limiting groove 7. As the limiting bolt 62 is tightened, the friction ring 63 is gradually inserted into the receiving groove 71. The pressure generated by the limiting bolt on the limiting ring 61 and the friction between the friction ring 63 and the receiving groove 71 limit the rotation of the limiting ring 61, thereby locking the rotation state of the drive ring and reducing the possibility of the bidirectional lead screw 21 rotating due to worker accidental contact or equipment vibration. This ensures that the limiting plate 23 effectively limits the position of the billet throughout the rolling process.
[0044] The implementation principle of a limiting device for a hot rolling mill according to an embodiment of this application is as follows: Before rolling begins, the worker rotates the drive rod 43, which drives the second bevel gear 42 to rotate. The second bevel gear 42 drives the meshing first bevel gear 41 to rotate, which in turn drives the bidirectional lead screw 21 to rotate. Under the guidance of the connecting block 22 and the sliding groove 2, the bidirectional lead screw 21 drives the two limiting plates 23 to move towards the billet until the limiting plates 23 abut against both sides of the billet, thereby limiting the position of the billet. This effectively reduces the possibility of the billet shifting due to external factors during the conveying process, thereby ensuring that the pressure of the rolls is evenly distributed on the billet and improving the rolling quality of the hot rolling mill 01.
[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A limiting device for a hot rolling mill, comprising a base plate (1) mounted on the body of a hot rolling mill (01), characterized in that, A sliding groove (2) is provided on the base plate (1). A bidirectional lead screw (21) is rotatably connected in the sliding groove (2). A connecting block (22) is threaded on the two sections of the bidirectional lead screw (21) with opposite thread directions. The connecting block (22) is slidably connected in the sliding groove (2). A limiting plate (23) for limiting the steel plate is provided on the connecting block (22). An operating component (4) for driving the bidirectional lead screw (21) to rotate is provided on the base plate (1).
2. A limiting device for a hot rolling mill according to claim 1, characterized in that, The substrate (1) has a drive groove (3) that communicates with the sliding groove (2). The operating component (4) includes a bevel gear (41) coaxially arranged with the bidirectional lead screw (21). A drive rod (43) is rotatably connected in the drive groove (3). A bevel gear (42) coaxially arranged on the drive rod (43) and meshes with the bevel gear (41). The end of the drive rod (43) extends to the outer surface of the substrate (1). A locking component (6) that restricts the rotation of the drive rod (43) is provided in the drive groove (3).
3. A limiting device for a hot rolling mill according to claim 2, characterized in that, The locking assembly (6) includes a limiting ring (61) slidably sleeved on the outer surface of the drive rod (43). The drive rod (43) has a moving groove (431) along the axial direction. The inner wall of the limiting ring (61) is provided with a moving block (611) that slides with the moving groove (431). The base plate (1) has a limiting groove (7) communicating with the drive groove (3). The base plate (1) is threaded with a plurality of rotation limiting bolts (62). The ends of the rotation limiting bolts (62) extend into the limiting groove (7). The rotation limiting bolts (62) press the limiting ring (61) against the inner wall of the limiting groove (7).
4. A limiting device for a hot rolling mill according to claim 3, characterized in that, The limiting ring (61) has a friction ring (63) on its surface away from the rotation limiting bolt (62). The friction ring (63) is made of elastic material. The inner wall of the limiting groove (7) has a receiving groove (71) that is inserted and matched with the friction ring (63). The cross-section of the friction ring (63) and the receiving groove (71) is V-shaped. When the rotation limiting bolt (62) presses the limiting ring (61) together, the friction ring (63) fills the receiving groove (71).
5. A limiting device for a hot rolling mill according to claim 1, characterized in that, The opposing surfaces of the limiting plate (23) are each provided with a high-temperature resistant rubber pad (231).
6. A limiting device for a hot rolling mill according to claim 1, characterized in that, The substrate (1) is embedded with a water-cooled pipe (5), which is filled with cooling water. The two ends of the water-cooled pipe (5) are respectively connected to an inlet connector (51) and an outlet connector (52). The inlet connector (51) and the outlet connector (52) are connected to a circulating cooling water device.
7. A limiting device for a hot rolling mill according to claim 1, characterized in that, Telescopic cover one (221) is provided on the opposite surfaces of the two connecting blocks (22). The end of the telescopic cover one (221) away from the connecting block (22) is provided on the inner side wall of the sliding groove (2). Telescopic cover two (222) is provided between the opposite surfaces of the two connecting blocks (22).
8. A limiting device for a hot rolling mill according to claim 1, characterized in that, The outer surface of the substrate (1) is provided with scale markings (101) for indicating the positions of the two limiting plates (23).