Anti-loosening device for frame roller of hot mill
By combining mechanical limiting and electromagnetic adsorption, the problem of loose hot rolling mill rolls was solved, enabling rapid disassembly and stable installation, and improving the equipment's operational stability and maintenance convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI JINGANG INTELLIGENT MFG TECH IND
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-19
AI Technical Summary
The anchor bolts of the bearing seats of the hot rolling mill stand rolls are prone to loosening, which makes the equipment inconvenient to use and poses a safety hazard. Moreover, the replacement process is time-consuming and labor-intensive.
By employing the combined mechanical limiting and electromagnetic adsorption of the first and second anti-loosening fastening components, and through the cooperation of electric push rods and electromagnets, stable installation and rapid disassembly of hot rolling mill stand rolls can be achieved.
This effectively avoids the problem of hot rolling mill rolls loosening due to vibration, simplifies the maintenance and replacement process, and improves the practicality and stability of the equipment.
Smart Images
Figure CN224253829U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hot rolling mill stand roll technology, and specifically discloses a hot rolling mill stand roll anti-loosening device. Background Technology
[0002] As the core transmission component of the rolling production line, the axial stability of the hot rolling mill stand rolls directly determines the strip thickness accuracy and equipment service life.
[0003] The roller body, bearing housing, anchor bolt assembly, and transmission system (motor, reducer, universal coupling, spline shaft) are all components that make up the roller body. During operation, when the slab bites in, the roller body bears the impact load, which is transmitted to the anchor bolts through the bearing housing. The bolts are subjected to tensile / shear combined stress, and the bolt preload provides axial constraint to resist rolling vibration.
[0004] The above technical solution has the following technical bottlenecks: Because the E-stand roll of the hot rolling mill is subjected to a large impact from the previous slab, the anchor bolts of the E-stand roll bearing seat are prone to loosening, or even all the anchor bolts may fall off, leading to accidents. Moreover, the installation and removal of bolts are time-consuming and inconvenient to use. Therefore, a hot rolling mill roll anti-loosening device is needed to solve the above problems. Utility Model Content
[0005] This utility model proposes a hot rolling mill stand roll anti-loosening device. Through the combined mechanical limiting and electromagnetic adsorption of the first and second anti-loosening fastening components, it can effectively prevent the hot rolling mill stand roll body from becoming loose due to gravity pressure vibration during use. Furthermore, the device greatly reduces the difficulty of use, maintenance, and replacement by using a simple disassembly method, thus greatly enhancing the practicality and stability of the entire device.
[0006] This utility model is implemented as follows: a hot rolling mill stand roll anti-loosening device includes a base plate and a first anti-loosening fastening component and a second anti-loosening fastening component disposed above the base plate.
[0007] The first anti-loosening fastening assembly includes a bracket fixedly connected to the upper end of the base plate. An electric actuator is installed at the upper end of the bracket. An installation plate is fixedly connected to the output end of the electric actuator. A first mating plate is rotatably connected to the rear end of the installation plate via a bearing. A vertical plate is fixedly connected to the upper end of the base plate. A second mating plate is rotatably connected to the front end of the vertical plate. A spline shaft is fixedly connected to the front end of the second mating plate. A hot rolling mill stand roll body is provided on the outer wall of the spline shaft. A spline groove adapted to the spline shaft is opened on the inner wall of the hot rolling mill stand roll body. Two symmetrically distributed limiting shafts are fixedly connected to the opposite side of the second mating plate and the first mating plate. Two limiting holes are opened at both the front and rear ends of the hot rolling mill stand roll body.
[0008] The second anti-loosening fastening assembly includes a fixed shaft fixedly connected to the front end of the spline shaft. A first electromagnet is installed at the front end of the fixed shaft, and a socket is provided at the rear end of the first mating plate. A second electromagnet is installed inside the socket.
[0009] As a preferred embodiment of the hot rolling mill stand roll anti-loosening device of this utility model, a horizontal plate is fixedly connected to the rear end of the vertical plate, and a motor with its output end passing through the vertical plate and fixedly connected to the second connecting plate is installed at the upper end of the horizontal plate.
[0010] As a preferred embodiment of the hot rolling mill stand roll anti-loosening device of this utility model, a reinforcing plate is fixedly connected between the vertical plate and the outer wall of the support.
[0011] In a preferred embodiment of the hot rolling mill stand roll anti-loosening device of this utility model, an auxiliary plate is fixedly connected to the lower end of the mounting plate, and the lower end of the auxiliary plate is slidably connected to the upper end surface of the reinforcing plate.
[0012] In a preferred embodiment of the hot rolling mill stand roll anti-loosening device of this utility model, the size of the fixed shaft is equal to the size of the insertion hole.
[0013] In a preferred embodiment of the hot rolling mill stand roll anti-loosening device of this utility model, the size of the limiting hole is equal to the size of the limiting shaft.
[0014] As a preferred embodiment of the hot rolling mill stand roll anti-loosening device of this utility model, a controller is installed at the front end of the support.
[0015] The beneficial effects of this utility model are:
[0016] The mounting plate is moved by the electric actuator, which moves the first docking plate closer to the second docking plate. This allows the limiting shafts on the outer walls of the second and first docking plates to be precisely inserted into the limiting holes of the hot rolling mill stand roll body, forming a four-point symmetrical mechanical constraint. The hot rolling mill stand roll body is initially limited by mechanical limiting.
[0017] When the first and second electromagnets are energized, an electromagnetic attraction force is generated between the fixed shaft and the insertion hole. When the power is turned off, the electromagnetic attraction force disappears, and the electric push rod retracts, causing the limiting shaft to disengage from the limiting hole. This allows the hot rolling mill stand roll body to be pulled away from the outer wall of the spline shaft. The electromagnetic attraction further limits the hot rolling mill stand roll body, effectively preventing the hot rolling mill stand roll body from becoming loose due to gravity pressure vibration during use. Furthermore, the device's simple disassembly method greatly reduces the difficulty of use, maintenance, and replacement, significantly enhancing the practicality and stability of the entire device. Attached Figure Description
[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0019] Figure 1 This is an overall structural diagram of a hot rolling mill stand roll anti-loosening device according to the present invention.
[0020] Figure 2 This is a partial structural diagram of the present invention.
[0021] Figure 3 This is a partial structural diagram of the present invention;
[0022] Figure 4 This is a structural diagram of the first docking plate of this utility model.
[0023] The markings in the diagram are: 1. Base plate; 2. Horizontal plate; 3. Motor; 4. Vertical plate; 5. Second docking plate; 6. Splined shaft; 7. Hot rolling mill stand roll body; 8. Support; 9. Electric actuator; 10. Mounting plate; 11. First docking plate; 12. Limiting shaft; 13. Limiting hole; 14. Fixed shaft; 15. First electromagnet; 16. Insertion hole; 17. Spline groove; 18. Second electromagnet; 19. Auxiliary plate; 20. Reinforcing plate. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.
[0025] Please see Figure 1-4 A hot rolling mill stand roll anti-loosening device includes a base plate 1, and a first anti-loosening fastening component and a second anti-loosening fastening component are arranged above the base plate 1;
[0026] The first anti-loosening fastening assembly includes a bracket 8 fixedly connected to the upper end of the base plate 1. An electric push rod 9 is installed at the upper end of the bracket 8. An installation plate 10 is fixedly connected to the output end of the electric push rod 9. A first docking plate 11 is rotatably connected to the rear end of the installation plate 10 via a bearing. A vertical plate 4 is fixedly connected to the upper end of the base plate 1. A second docking plate 5 is rotatably connected to the front end of the vertical plate 4. A spline shaft 6 is fixedly connected to the front end of the second docking plate 5. A hot rolling mill stand roll body 7 is provided on the outer wall of the spline shaft 6. A spline groove 17 adapted to the spline shaft 6 is opened on the inner wall of the hot rolling mill stand roll body 7. Two symmetrically distributed limiting shafts 12 are fixedly connected to the opposite side of the second docking plate 5 and the first docking plate 11. Two limiting holes 13 are opened at both the front and rear ends of the hot rolling mill stand roll body 7.
[0027] The second anti-loosening fastening assembly includes a fixed shaft 14 fixedly connected to the front end of the spline shaft 6. A first electromagnet 15 is installed at the front end of the fixed shaft 14. A socket 16 is opened at the rear end of the first docking plate 11. A second electromagnet 18 is installed inside the socket 16.
[0028] In this embodiment: the electric actuator 9 pushes the mounting plate 10 to move, causing the first docking plate 11 to move closer to the second docking plate 5, so that the limiting shaft 12 on the outer wall of the second docking plate 5 and the first docking plate 11 is precisely inserted into the limiting hole 13 of the hot rolling mill stand roll body 7, forming a four-point symmetrical mechanical constraint.
[0029] When the first electromagnet 15 and the second electromagnet 18 are energized, an electromagnetic attraction force is generated between the fixed shaft 14 and the insertion hole 16. When the power is turned off, the electromagnetic attraction force disappears, and the electric push rod 9 retracts, causing the limiting shaft 12 to disengage from the limiting hole 13. This allows the hot rolling mill roll body 7 to be pulled away from the outer wall of the spline shaft 6, thus achieving rapid roll changing.
[0030] As a technical optimization of this utility model, a horizontal plate 2 is fixedly connected to the rear end of the vertical plate 4, and a motor 3 with an output end that passes through the vertical plate 4 and is fixedly connected to the second docking plate 5 is installed at the upper end of the horizontal plate 2.
[0031] In this embodiment, the second mating plate 5, the spline shaft 6, and the hot rolling mill roll body 7 can be driven to rotate by the motor 3.
[0032] As a technical optimization of this utility model, a reinforcing plate 20 is fixedly connected between the vertical plate 4 and the outer wall of the bracket 8.
[0033] In this embodiment, the bearing capacity of the vertical plate 4 and the bracket 8 can be increased by the reinforcing plate 20.
[0034] As a technical optimization of this utility model, an auxiliary plate 19 is fixedly connected to the lower end of the mounting plate 10, and the lower end of the auxiliary plate 19 is slidably connected to the upper end surface of the reinforcing plate 20.
[0035] In this embodiment, the stability of the moving mounting plate 10 can be increased by sliding the lower end of the auxiliary plate 19 to the upper end surface of the reinforcing plate 20.
[0036] As a technical optimization of this utility model, the size of the fixed shaft 14 is equal to the size of the insertion hole 16.
[0037] In this embodiment: by precisely matching the hole and shaft dimensions, the assembly gap is eliminated, preventing fretting wear of the hot rolling mill stand roll body 7 under rolling impact load.
[0038] As a technical optimization of this utility model, the size of the limiting hole 13 is equal to the size of the limiting shaft 12.
[0039] In this embodiment, the size of the limiting hole 13 is equal to the size of the limiting shaft 12, which helps to stabilize the magnetic pole distance between the first electromagnet 15 and the second electromagnet 18.
[0040] As a technical optimization of this utility model, a controller is installed at the front end of the bracket 8.
[0041] In this embodiment, the electric push rod 9, the first electromagnet 15 and the second electromagnet 18 are all electrically connected to the controller, and the controller can control the operation of each component.
[0042] The working principle and usage process of this utility model: When using this utility model, the hot rolling mill stand roll body 7 needs to be installed on the outer wall of the spline shaft 6 first. After the hot rolling mill stand roll body 7 is installed, the electric push rod 9 is started. The electric push rod 9 pushes the installation plate 10 to move, which drives the first docking plate 11 to move closer to the second docking plate 5, so that the limiting shaft 12 on the outer wall of the second docking plate 5 and the first docking plate 11 is accurately inserted into the limiting hole 13 of the hot rolling mill stand roll body 7, forming a four-point symmetrical mechanical constraint.
[0043] When the first electromagnet 15 and the second electromagnet 18 are energized, an electromagnetic attraction force is generated between the fixed shaft 14 and the insertion hole 16. When the power is turned off, the electromagnetic attraction force disappears, and the electric push rod 9 retracts, causing the limiting shaft 12 to disengage from the limiting hole 13. This allows the hot rolling mill stand roll body 7 to be pulled away from the outer wall of the spline shaft 6, enabling rapid roll changing. Through the synergistic effect of mechanical limiting and electromagnetic attraction, the problem of loosening of the hot rolling mill stand roll body 7 due to gravity pressure vibration during use can be effectively avoided.
[0044] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.
[0045] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A hot rolling mill stand roll anti-loosening device, comprising a base plate (1), characterized in that: A first anti-loosening fastening component and a second anti-loosening fastening component are provided above the base plate (1); The first anti-loosening fastening assembly includes a bracket (8) fixedly connected to the upper end of the base plate (1). An electric push rod (9) is installed at the upper end of the bracket (8). An installation plate (10) is fixedly connected to the output end of the electric push rod (9). A first docking plate (11) is rotatably connected to the rear end of the installation plate (10) through a bearing. A vertical plate (4) is fixedly connected to the upper end of the base plate (1). A second docking plate (5) is rotatably connected to the front end of the vertical plate (4). A spline shaft (6) is fixedly connected to the front end of the second docking plate (5). A hot rolling mill stand roll body (7) is provided on the outer wall of the spline shaft (6). A spline groove (17) adapted to the spline shaft (6) is opened on the inner wall of the hot rolling mill stand roll body (7). Two symmetrically distributed limiting shafts (12) are fixedly connected to the opposite side of the second docking plate (5) and the first docking plate (11). Two limiting holes (13) are opened at both the front and rear ends of the hot rolling mill stand roll body (7). The second anti-loosening fastening assembly includes a fixed shaft (14) fixedly connected to the front end of the spline shaft (6), a first electromagnet (15) is installed at the front end of the fixed shaft (14), and a socket (16) is opened at the rear end of the first docking plate (11), and a second electromagnet (18) is installed inside the socket (16).
2. The hot rolling mill stand roll anti-loosening device according to claim 1, characterized in that: The rear end of the vertical plate (4) is fixedly connected to a horizontal plate (2), and the upper end of the horizontal plate (2) is equipped with a motor (3) whose output end passes through the vertical plate (4) and is fixedly connected to the second docking plate (5).
3. The hot rolling mill stand roll anti-loosening device according to claim 1, characterized in that: A reinforcing plate (20) is fixedly connected between the vertical plate (4) and the outer wall of the bracket (8).
4. The hot rolling mill stand roll anti-loosening device according to claim 3, characterized in that: An auxiliary plate (19) is fixedly connected to the lower end of the mounting plate (10), and the lower end of the auxiliary plate (19) is slidably connected to the upper end surface of the reinforcing plate (20).
5. The hot rolling mill stand roll anti-loosening device according to claim 1, characterized in that: The dimensions of the fixed shaft (14) are equal to the dimensions of the socket (16).
6. The hot rolling mill stand roll anti-loosening device according to claim 1, characterized in that: The size of the limiting hole (13) is equal to the size of the limiting shaft (12).
7. The hot rolling mill stand roll anti-loosening device according to claim 1, characterized in that: A controller is installed at the front end of the bracket (8).