A universal joint coupling for slowing down rolling mill
By using a combination of shock absorbing components and limiting components in the rolling mill universal joint coupling, the vibration and impact problems caused by rigid connection are solved, and the rolling roll is uniformly subjected to force and equipment life is extended.
Patent Information
- Application Number
- CN202420196938.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-01-26
AI Technical Summary
Due to the rigid connection between the universal joint coupling and the rolling mill roll, the impact force occurs when the rolling rolls bite into the rolling material and the shaking occurs when the universal joint rotates, resulting in a larger vibration amplitude, which easily leads to damage to the adjustment bolts and uneven force on the rolling roll, which in turn affects the rolling quality and equipment life.
The combination device of shock absorbing components and limiting components is adopted to adjust the center distance of the universal joint coupling through the shock absorbing components, and protect the threaded connection of the shock absorbing components through the limiting components to reduce vibration and impact forces and ensure uniform force on the roll.
It effectively reduces the vibration of the universal joint coupling and the impact force when the rolling rolls bite into the rolling material, ensures the uniform force and smooth operation of the rolling rolls, and extends the service life of connecting rods, swing rods, bearings and other equipment.
Smart Images
Figure CN222695620U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of universal joint coupling rolling mills, in particular to a universal joint coupling for a rolling mill. Background Art
[0002] The rolling mill adopts a separate drive arrangement for the upper and lower rollers. It is a distributed elastic inertia system. When torsional vibration occurs, an alternating torque appears in the shaft system. This alternating torque is superimposed on the normal rolling torque, resulting in torque oscillation. The peak value of the alternating torque that occurs during torsional vibration can reach 6 to 7 times the rolling torque. The damage caused by torsional vibration to the rollers, transmission shaft system and motor is caused by the abnormal torque generated by torsional vibration, including one-time damage caused by high stress and fatigue damage caused by frequent alternating torque.
[0003] The universal joint coupling is a transmission device that connects the reducer and the two-roller rolling mill. It is located in the rough and medium rolling areas. One end of the universal joint coupling is connected to the reducer, and the other end is supported by a bracket and connected to the two rollers on the rolling mill. During normal production, the motor provides power, and the reducer outputs power to drive the mill rollers through the universal joint coupling to complete the rolling. As the mill rolls are repaired and used again, the roll diameter will become smaller and smaller. To achieve normal rolling of the rolls, the center distance between the two rolls becomes smaller, and the center distance between the two universal joint couplings also needs to become smaller. The change in the center distance of the universal joint coupling is achieved by adjusting the nut.
[0004] At present, due to the rigid connection between the universal joint coupling and the rolling mill rollers, on the one hand, impact force will be generated when the rollers bite into the rolled material for rolling, and on the other hand, the universal joint itself will shake when it rotates. The forces of the two are transmitted to the bracket pull rod, which makes the vibration amplitude of the universal joint coupling larger, which can easily cause damage to the adjusting bolts, causing the rocker device to lose its lever adjustment function, resulting in uneven force on the two rollers on the rolling mill. If the rollers vibrate greatly, the qualified rolling size will not be achieved. At the same time, connecting rods, rocker arms, bearings and other equipment are also easily damaged.
[0005] In view of the above problems, a universal joint coupling for slowing down a rolling mill is proposed. Utility Model Content
[0006] The utility model aims to provide a universal joint coupling for slowing down a rolling mill, and adopts the device to work, thereby solving the problems in the above-mentioned background that due to the rigid connection between the universal joint coupling and the rolling mill rollers, on the one hand, impact force is generated when the rollers bite into the rolled material for rolling, and on the other hand, shaking is generated when the universal joint itself rotates. The forces of the two are transmitted to the bracket pull rod, which makes the vibration amplitude of the universal joint coupling larger, which is easy to cause damage to the adjusting bolt, and the rocker arm device loses the lever adjustment function, resulting in uneven force on the two rollers on the rolling mill. The rollers have large vibrations and cannot be rolled to a qualified size. At the same time, the connecting rod, rocker arm, bearings and other equipment are also easily damaged.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A universal joint coupling for a rolling mill includes a fixed block, a damping assembly is threadedly fixedly installed on the middle part of the upper end of the fixed block, a limiting assembly is threadedly fixedly installed on the upper end of the damping assembly, the damping assembly is used to adjust the center distance of the universal joint coupling, and the limiting assembly is used to protect the threaded connection at the upper end of the damping assembly.
[0009] Furthermore, the shock absorbing assembly includes a sleeve and a pressure cover arranged on one side of the sleeve, and an elastic element is movably installed in the inner cavity of the sleeve.
[0010] Furthermore, a threaded rod is inserted and installed in the middle of the elastic element, a fixing mechanism is threadedly installed on the outer surface of the threaded rod, and a washer is arranged at one end of the fixing mechanism.
[0011] Furthermore, the fixing mechanism comprises a mounting nut and an arc-shaped rod fixedly mounted around the middle of the outer wall of the mounting nut, and an expansion nut is fixedly mounted on the upper end of the arc-shaped rod.
[0012] Furthermore, the limiting assembly includes a hollow round cover and a hollow threaded cylinder fixedly installed in the middle of the lower end of the hollow round cover, and a shielding ring is fixedly installed around the lower end of the hollow round cover.
[0013] Furthermore, a docking round block is fixedly installed in the middle of the upper end of the hollow round cover, and handle columns are fixedly installed around the outer wall of the docking round block.
[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0015] The operator removes the adjusting nut and the pull rod in the universal joint coupling and the rolling mill roll connection device, installs the shock absorbing assembly and the fixed block, and connects them with the swing rod and the coupling ear shaft respectively. If the center distance of the universal joint coupling needs to be adjusted during use, the adjustment can be achieved by simply rotating the installation nut in the shock absorbing assembly. By improving the structural form of the universal joint coupling and the rolling mill roll connection device of the steel rolling production line and connecting them with the shock absorbing device, the vibration of the universal joint coupling can be effectively reduced, and the impact when the rolling mill roll bites into the rolled material can be reduced, thereby ensuring that the two rolling mill rolls are evenly stressed and run smoothly, and at the same time extending the service life of the connecting rod, the swing rod and the bearing. Practice has proved that the use of this shock absorbing device can effectively reduce the impact of the impact force generated when the rolling mill roll bites into the rolled material on the rolling mill, so that the two rolling mill rolls are evenly stressed and the bearings connecting the rolling mill and the rolling mill roll are avoided. On the other hand, it can slow down the shaking generated when the universal joint itself rotates, thereby ensuring the service life of the connecting rod and the swing rod, and finally ensuring the smooth operation of the rolling production line. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1It is a schematic diagram of the overall three-dimensional structure of the utility model;
[0017] Figure 2 It is a side view of the shock absorbing assembly of the utility model;
[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the hollow round cover of the utility model;
[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the hollow threaded cylinder of the utility model.
[0020] In the figure: 1. fixing block; 2. shock absorbing assembly; 21. sleeve; 22. pressure cover; 23. elastic element; 24. threaded rod; 25. fixing mechanism; 251. mounting nut; 252. arc rod; 253. expansion nut; 26. washer; 3. limit assembly; 31. hollow round cover; 32. hollow threaded cylinder; 33. shielding ring; 34. docking round block; 35. handle column. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.
[0023] Combination Figure 1 The utility model discloses a universal joint coupling for a rolling mill, comprising a fixed block 1, a damping assembly 2 is threadedly fixedly installed on the middle part of the upper end of the fixed block 1, a limiting assembly 3 is threadedly fixedly installed on the upper end of the damping assembly 2, the damping assembly 2 is arranged to adjust the center distance of the universal joint coupling, and the limiting assembly 3 is arranged to protect the threaded connection at the upper end of the damping assembly 2.
[0024] The utility model is further described below in conjunction with embodiments.
[0025] Example 1
[0026] See also Figure 1-Figure 2 A universal joint coupling for a rolling mill is provided, comprising a fixed block 1, a damping assembly 2 is threadedly fixedly installed on the middle part of the upper end of the fixed block 1, a limiting assembly 3 is threadedly fixedly installed on the upper end of the damping assembly 2, the damping assembly 2 is arranged to adjust the center distance of the universal joint coupling, and the limiting assembly 3 is arranged to protect the threaded connection at the upper end of the damping assembly 2.
[0027] The shock absorbing assembly 2 comprises a sleeve 21 and a pressure cover 22 arranged at one side of the sleeve 21 , and an elastic element 23 is movably installed in the inner cavity of the sleeve 21 .
[0028] A threaded rod 24 is inserted and installed in the middle of the elastic element 23 , a fixing mechanism 25 is threadedly installed on the outer surface of the threaded rod 24 , and a washer 26 is provided at one end of the fixing mechanism 25 .
[0029] The fixing mechanism 25 includes a mounting nut 251 and an arc rod 252 fixedly mounted around the middle of the outer wall of the mounting nut 251. An expansion nut 253 is fixedly mounted on the upper end of the arc rod 252, and the shielding ring 33 is provided to shield the surroundings of the mounting nut 251.
[0030] Specifically, the operator removes the adjusting nut and the pull rod in the universal joint coupling and the rolling mill roll connection device, installs the shock absorbing assembly 2 and the fixed block 1, and connects them with the rocker arm and the coupling ear shaft respectively. If the center distance of the universal joint coupling needs to be adjusted during use, the adjustment can be achieved by simply rotating the mounting nut 251 in the shock absorbing assembly 2. By improving the structural form of the universal joint coupling and the rolling mill roll connection device of the steel rolling production line and connecting them with the shock absorbing device, the vibration of the universal joint coupling can be effectively reduced, and the impact when the rolling mill roll bites into the rolled material can be reduced, thereby ensuring that the two rolling mill rolls are evenly stressed and run smoothly, while extending the service life of the connecting rod, the rocker arm and the bearing. Practice has proved that the use of this shock absorbing device can, on the one hand, effectively reduce the impact of the impact force generated when the rolling mill roll bites into the rolled material on the rolling mill, so that the two rolling mill rolls are evenly stressed and the bearings connecting the rolling mill and the rolling mill roll are avoided from being damaged. On the other hand, it can slow down the shaking generated when the universal joint itself rotates, thereby ensuring the service life of the connecting rod and the rocker arm, and finally ensuring the smooth operation of the rolling production line.
[0031] Example 2
[0032] See also Figure 3-Figure 4 The limiting component 3 includes a hollow round cover 31 and a hollow threaded cylinder 32 fixedly installed in the middle of the lower end of the hollow round cover 31. A shielding ring 33 is fixedly installed around the lower end of the hollow round cover 31. The hollow threaded cylinder 32 is threadedly fixed in the inner cavity of the expansion nut 253, thereby driving the hollow round cover 31 to be installed on the upper end of the mounting nut 251 to block dust.
[0033] A docking block 34 is fixedly installed in the middle of the upper end of the hollow round cover 31, and a handle column 35 is fixedly installed around the outer wall of the docking block 34. By rotating the handle column 35, the docking block 34 and the hollow round cover 31 are driven to rotate, and then the hollow threaded cylinder 32 threadedly connected in the inner cavity of the expansion nut 253 is driven to rotate together.
[0034] Specifically, after the operator determines the installation position of the mounting nut 251, the operator aligns the hollow threaded cylinder 32 with the inner cavity of the expansion nut 253, rotates the handle 35 to drive the docking block 34 and the hollow round cover 31 to rotate, and threadedly fixes the hollow threaded cylinder 32 into the inner cavity of the expansion nut 253 to fix it. The hollow round cover 31 and the shielding ring 33 are provided to shield the dust around the installation of the mounting nut 251, thereby reducing the entry of dust into the connection between the mounting nut 251 and the threaded rod 24, which affects the position adjustment of the mounting nut 251.
[0035] In summary: the operator removes the adjusting nut and the pull rod in the universal joint coupling and the rolling mill roll connection device, installs the shock absorbing assembly 2 and the fixed block 1, and connects them to the swing rod and the coupling ear shaft respectively. If the center distance of the universal joint coupling needs to be adjusted during use, it is only necessary to rotate the mounting nut 251 in the shock absorbing assembly 2 to achieve the adjustment. By improving the structural form of the universal joint coupling and the rolling mill roll connection device of the steel rolling production line and using the shock absorbing device for connection, the vibration of the universal joint coupling can be effectively reduced, and the impact when the rolling mill roll bites into the rolled material can be reduced, thereby ensuring that the two rolling mill rolls are evenly stressed. , runs smoothly, and at the same time prolongs the service life of the connecting rod, rocker arm and bearing. After the operator determines the installation position of the mounting nut 251, the operator aligns the hollow threaded cylinder 32 with the inner cavity of the expansion nut 253, rotates the handle 35 to drive the docking block 34 and the hollow round cover 31 to rotate, and the hollow threaded cylinder 32 is threadedly fixed into the inner cavity of the expansion nut 253 for fixing. The hollow round cover 31 and the shielding ring 33 are arranged to shield the dust around the installation of the mounting nut 251, so that the operator can adjust the position of the mounting nut 251 conveniently.
[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A universal joint coupling for a rolling mill, comprising a fixed block (1), characterized in that: A damping assembly (2) is threadedly fixedly mounted on the middle portion of the upper end of the fixing block (1), and a limiting assembly (3) is threadedly fixedly mounted on the upper end of the damping assembly (2). The damping assembly (2) is used to adjust the center distance of the universal joint coupling, and the limiting assembly (3) is used to protect the threaded connection at the upper end of the damping assembly (2).
2. A universal joint coupling for a rolling mill according to claim 1, characterized in that: The shock absorbing assembly (2) comprises a sleeve (21) and a pressure cover (22) arranged on one side of the sleeve (21), and an elastic element (23) is movably installed in the inner cavity of the sleeve (21).
3. A universal joint coupling for a rolling mill according to claim 2, characterized in that: A threaded rod (24) is inserted and installed in the middle of the elastic element (23), a fixing mechanism (25) is threadedly installed on the outer surface of the threaded rod (24), and a washer (26) is provided at one end of the fixing mechanism (25).
4. A universal joint coupling for a rolling mill according to claim 3, characterized in that: The fixing mechanism (25) comprises a mounting nut (251) and an arc-shaped rod (252) fixedly mounted around the middle of the outer wall of the mounting nut (251), and an expansion nut (253) is fixedly mounted on the upper end of the arc-shaped rod (252).
5. A universal joint coupling for a rolling mill according to claim 4, characterized in that: The position limiting assembly (3) comprises a hollow round cover (31) and a hollow threaded cylinder (32) fixedly mounted in the middle of the lower end of the hollow round cover (31), and a shielding ring (33) is fixedly mounted around the lower end of the hollow round cover (31).
6. A universal joint coupling for a rolling mill according to claim 5, characterized in that: A docking round block (34) is fixedly mounted in the middle of the upper end of the hollow round cover (31), and handles (35) are fixedly mounted around the outer wall of the docking round block (34).