Dynamic pinch roll device with composite damping base

Abstract

The utility model relates to a kind of dynamic pinch roll device with composite damping pedestal, belong to pinch roll device technical field, including mounting frame, press roll and two supporting rollers, press roll and supporting roller are installed in mounting frame, press roll is lifted under the control of air cylinder;The mounting frame is fixed in the middle part of composite damping pedestal, and the composite damping pedestal includes hydraulic damper, several butterfly spring groups arranged in matrix and pedestal top plate;The mounting frame four corners are all equipped with the hydraulic damper connected to the pedestal top plate, and butterfly spring group is arranged below the pedestal top plate.The utility model utilizes composite damping pedestal to absorb the vibration energy of steel belt, to reduce the effect of noise;The utility model provides initial elastic support by disc spring group, when steel belt vibrates, hydraulic damper converts impact kinetic energy into heat energy, realizes broadband vibration damping;The utility model uses disc spring group matrix to effectively absorb residual vibration wave, reduce noise pollution, provide comfortable working environment for staff.

Description

Technical Field

[0001] This utility model belongs to the technical field of pinch roll devices, and is used as a metal rolling equipment in the uncoiling section of a pickling line. In particular, it relates to a dynamic pinch roll device with a composite damping base. Background Technology

[0002] During the pickling and uncoiling process of a continuous pickling mill, the large gap between the uncoiler and the tension rolls causes the hot-rolled strip to frequently slap against the mill platform when it has poor shape. This not only generates strong vibrations and noise but also damages the machinery, significantly shortening its lifespan. Furthermore, continuous noise pollution can cause irreversible damage to the hearing of on-site operators. Currently, the industry standard solution is to increase the tension at both ends to straighten the strip and reduce its contact with the mill platform. However, this method has limited effectiveness when dealing with thicker strips or those with severe edge waviness. Especially when handling high-strength, thick strips, simply increasing tension not only fails to effectively solve the vibration problem but may also cause plastic deformation of the strip, affecting product quality. In addition, existing pinch roll devices lack effective vibration damping structures, failing to absorb and buffer the impact energy generated by the slapping strip, causing the vibration to be directly transmitted to the equipment foundation, further aggravating the wear of mechanical components. Therefore, there is an urgent need to develop a pinch roll device with high-efficiency vibration reduction performance to fundamentally solve the vibration and noise problems caused by poor strip shape. Existing technologies urgently need improvement to address these issues. Summary of the Invention

[0003] This invention provides a dynamic pinch roller device with a composite damping base to solve the technical problems existing in the prior art. The composite damping base absorbs the vibration energy of the steel belt, thereby reducing noise.

[0004] This utility model includes the following technical solution: a dynamic pinch roller device with a composite damping base, comprising an installation frame, a pressure roller and two idler rollers, wherein the pressure roller and idler rollers are installed in the installation frame, and the pressure roller is raised and lowered under the control of a cylinder; the installation frame is fixedly installed in the middle of the composite damping base, the composite damping base comprising a hydraulic damper, a plurality of butterfly spring groups arranged in a matrix and a base top plate; hydraulic dampers connected to the base top plate are provided at the four corners of the installation frame, and the butterfly spring groups are arranged below the base top plate.

[0005] Furthermore, both of the idlers are fixed to the mounting frame via lower bearing seats.

[0006] Furthermore, both ends of the pressure roller are fixed to the connecting block via upper bearing seats, and the top of the connecting block is fixed to the cylinder piston rod.

[0007] Furthermore, the mounting frame is a rectangular frame, with a first mounting seat at the center of each of the four corners of the rectangular frame; two adjacent first mounting seats are symmetrical to each other.

[0008] Furthermore, a second mounting seat is provided at each of the four corners of the top plate of the base. The second mounting seat corresponds one-to-one with the first mounting seat and is located diagonally below the adjacent first mounting seat.

[0009] Furthermore, one end of the hydraulic damper is connected to the first mounting base, and the other end is connected to the corresponding second mounting base.

[0010] Furthermore, the composite damping base also includes a base side plate and a positioning base plate; the positioning base plate is fixed to the ground by bolts, and the base side plate and the disc spring assembly are both fixed to the positioning base plate.

[0011] Furthermore, the base side plate is located outside the base top plate and the disc spring assembly, with a gap between the base side plate and the base top plate, so that the disc spring assembly can drive the base top plate and the clamping roller to vibrate slightly.

[0012] Furthermore, the preload of the disc spring assembly is adjustable in the range of 5-50kN.

[0013] Furthermore, the damping coefficient of the hydraulic damper is C = 1000-5000 N·s / m.

[0014] The advantages and positive effects of this utility model are as follows:

[0015] 1. This utility model provides initial elastic support through a disc spring assembly. When the steel belt vibrates, the hydraulic damper converts the impact kinetic energy into heat energy (oil temperature rise ≤30℃), thereby achieving wideband vibration reduction.

[0016] 2. This utility model uses a disc spring matrix to effectively absorb residual vibration waves, reduce noise pollution, and provide employees with a comfortable working environment. Attached Figure Description

[0017] Figure 1 This is the front view of this utility model;

[0018] Figure 2 This is an enlarged schematic diagram of the disc spring assembly;

[0019] In the figure, 1-pressure roller; 2-support roller; 3-cylinder; 4-mounting frame; 401-first mounting seat; 5-upper bearing seat; 6-lower bearing seat; 7-connecting block; 8-hydraulic damper; 9-disc spring assembly; 10-base top plate; 101-second mounting seat; 11-base side plate; 12-positioning base plate. Detailed Implementation

[0020] To further disclose the invention content, features, and effects of this utility model, the following examples are provided in conjunction with the accompanying drawings for detailed description. In the following description of the embodiments, 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," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this patent and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent.

[0021] In the following description of the embodiments, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0022] Example: See Appendix Figure 1-2 A dynamic pinch roller device with a composite damping base includes a mounting frame 4, a pressure roller 1, and two idler rollers 2. The pressure roller 1 and idler rollers 2 are mounted inside the mounting frame 4. The pressure roller 1 is raised and lowered under the control of a cylinder 3. Both idler rollers 2 are fixed to the mounting frame 4 via lower bearing seats 6. Both ends of the pressure roller 1 are fixed to connecting blocks 7 via upper bearing seats 5. The top of the connecting blocks 7 is fixed to the piston rod of the cylinder 3.

[0023] The mounting frame 4 is fixedly mounted in the middle of the composite damping base, which includes a hydraulic damper 8, a matrix of butterfly spring groups 9, and a base top plate 10. Hydraulic dampers 8 are connected to the base top plate 10 at each of the four corners of the mounting frame 4, and the butterfly spring groups 9 are located below the base top plate 10. The preload of the butterfly spring groups 9 is adjustable from 5 to 50 kN. The damping coefficient of the hydraulic damper 8 is C = 1000-5000 N·s / m. The damping coefficient refers to the damping force generated by the hydraulic damper 8 at a unit speed, which can be achieved by adjusting the valve opening or changing the fluid viscosity. This parameter range balances the relationship between impact energy absorption and system response speed. The energy dissipation mechanism refers to converting mechanical vibration into heat energy through fluid flow resistance, specifically achieved using a multi-stage throttling channel combined with a buffer chamber structure. This design allows vibration energy to be gradually consumed within a preset range.

[0024] Specifically, when the strip steel experiences periodic impacts due to poor strip shape, the hydraulic damper 8 converts the impact energy into fluid heat energy through the linear relationship between damping force and vibration velocity. At a damping coefficient of 1000 N·s / m, effective absorption of foundation vibration energy is ensured. As the impact intensity increases, an upper limit of 5000 N·s / m is implemented through the gradual intervention of a multi-stage throttling structure to prevent sudden changes in damping force that could lead to stress concentration in the mechanical structure. This parameter range allows the device to automatically adjust the energy conversion efficiency according to changes in strip steel thickness, maintaining the continuity of the pressure roller's lifting and lowering actions while suppressing vibration transmission.

[0025] The mounting frame 4 is a rectangular frame, with a first mounting seat 401 located at the center of each of its four corners; adjacent first mounting seats 401 are symmetrical to each other. The base top plate 10 has a second mounting seat 101 located at each of its four corners, corresponding one-to-one with the first mounting seats 401 and situated diagonally below the adjacent first mounting seats 401. One end of the hydraulic damper 8 is connected to a first mounting seat 401, and the other end is connected to the corresponding second mounting seat 101.

[0026] The composite damping base also includes a base side plate 11 and a positioning base plate 12; the positioning base plate 12 is fixed to the ground by bolts, and the base side plate 11 and the disc spring assembly 9 are both fixed to the positioning base plate. The base side plate 11 is located outside the base top plate 10 and the disc spring assembly 9, and a gap is left between the base side plate 11 and the base top plate 10 so that the disc spring assembly 9 can drive the base top plate 10 and the pinch roller to vibrate slightly.

[0027] Working principle: Two to three sets of this device are installed at an average distance between the uncoiler and tensioner in the pickling and uncoiling section of the continuous rolling mill. The disc spring group 9 provides initial elastic support. When the steel strip vibrates, the hydraulic damper 8 converts the impact kinetic energy into heat energy (oil temperature rise ≤30℃), realizing wide-band vibration reduction. The disc spring group 9 matrix effectively absorbs the remaining vibration waves, reduces noise pollution, and provides a comfortable working environment for employees.

[0028] Specifically, when the vibration generated by the slapping of the strip is transmitted to the mounting frame 4, the hydraulic dampers 8 arranged at the four corners generate damping force through the reciprocating motion of the piston rods, converting high-frequency vibration energy into heat dissipation. The disc spring assembly 9 below the base top plate 10 absorbs low-frequency vibration energy through elastic deformation and gradually releases the energy during deformation recovery. The rigid connection between the mounting frame 4 and the composite damping base ensures that vibration energy is preferentially transmitted to the damping system, preventing energy from diffusing to the equipment foundation. The four-point symmetrical layout of the hydraulic dampers 8 ensures that impact loads in all directions are uniformly decomposed, and the matrix arrangement of the disc spring assembly 9 forms a multi-directional elastic support network. Together, they achieve wide-band vibration suppression.

[0029] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other modifications under the guidance of the present invention without departing from the spirit and scope of the claims. These modifications all fall within the protection scope of the present invention.

Claims

1. A dynamic pinch roller device with a composite damping base, comprising a mounting frame, a pressure roller, and two idler rollers, wherein the pressure roller and idler rollers are mounted within the mounting frame, and the pressure roller is raised and lowered under the control of a cylinder, characterized in that: The mounting frame is fixed in the middle of the composite damping base, which includes a hydraulic damper, a matrix of butterfly spring groups, and a base top plate. The mounting frame is provided with hydraulic dampers connected to the base top plate at each of its four corners, and the butterfly spring groups are located below the base top plate.

2. The dynamic pinch roller device with composite damping base according to claim 1, characterized in that: Both idlers are fixed to the mounting frame via lower bearing seats.

3. The dynamic pinch roller device with composite damping base according to claim 1, characterized in that: The two ends of the pressure roller are fixed to the connecting block through the upper bearing seat, and the top of the connecting block is fixed to the cylinder piston rod.

4. The dynamic pinch roller device with composite damping base according to claim 1, characterized in that: The mounting frame is a rectangular frame, and a first mounting seat is provided at the center of each of the four corners of the rectangular frame; two adjacent first mounting seats are symmetrical to each other.

5. The dynamic pinch roller device with composite damping base according to claim 4, characterized in that: The base top plate is provided with a second mounting seat at each of the four corners. The second mounting seat corresponds to the first mounting seat and is located diagonally below the adjacent first mounting seat.

6. The dynamic pinch roller device with composite damping base according to claim 5, characterized in that: One end of the hydraulic damper is connected to the first mounting base, and the other end is connected to the corresponding second mounting base.

7. The dynamic pinch roller device with composite damping base according to claim 1, characterized in that: The preload of the disc spring assembly is adjustable from 5 to 50 kN.

8. The dynamic pinch roller device with composite damping base according to claim 1, characterized in that: The damping coefficient of the hydraulic damper is C = 1000-5000 N·s / m.

9. The dynamic pinch roller device with a composite damping base according to any one of claims 1-8, characterized in that: The composite damping base also includes a base side plate and a positioning base plate; the positioning base plate is fixed to the ground by bolts, and the base side plate and the disc spring assembly are both fixed to the positioning base plate.

10. The dynamic pinch roller device with composite damping base according to claim 9, characterized in that: The base side plate is located outside the base top plate and the disc spring assembly, with a gap between the base side plate and the base top plate.

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