阅读说明：本技术 一种消除轧机hgc缸偏差的平衡装置 (Balancing device for eliminating deviation of HGC cylinder of rolling mill ) 是由 周伟文 曹小彬 于 2021-08-31 设计创作，主要内容包括：本发明公开了一种消除轧机HGC缸偏差的平衡装置,包括HGC缸、上支承辊轴承座、上工作辊轴承座、下支承辊轴承座以及下工作辊轴承座,HGC缸设在上支承辊轴承座上方,所述上支承辊轴承座和上工作辊轴承座相对设置,所述下支承辊轴承座和下工作辊轴承座相对设置,所述上支承辊轴承座和上工作辊轴承座之间、下支承辊轴承座和下工作辊轴承座之间均设有轧机弹性阻尼体。可以消除承压件磨损造成的累计偏差,可平衡部分轧制力偏差,消除了部分倾翻的力矩；在不停产的维修的情况下,对HGC缸轻微倾斜有着纠偏作用,缓冲轧制力对承压件振动冲击；平衡力的大小可以通过增减垫片来调整,安装比较方便,随时可以拆除,对生产影响小。(The invention discloses a balancing device for eliminating deviation of a rolling mill HGC cylinder, which comprises a HGC cylinder, an upper supporting roller bearing seat, an upper working roller bearing seat, a lower supporting roller bearing seat and a lower working roller bearing seat, wherein the HGC cylinder is arranged above the upper supporting roller bearing seat, the upper supporting roller bearing seat and the upper working roller bearing seat are oppositely arranged, the lower supporting roller bearing seat and the lower working roller bearing seat are oppositely arranged, and rolling mill elastic damping bodies are respectively arranged between the upper supporting roller bearing seat and the upper working roller bearing seat and between the lower supporting roller bearing seat and the lower working roller bearing seat. Accumulated deviation caused by abrasion of the pressure-bearing part can be eliminated, partial rolling force deviation can be balanced, and partial tipping moment is eliminated; under the condition of maintenance without stopping production, the device has a rectification function on slight inclination of the HGC cylinder, and buffers the vibration impact of rolling force on the bearing part; the size of the balance force can be adjusted by increasing or decreasing the gaskets, the installation is more convenient, the balance force can be detached at any time, and the influence on the production is small.)

1. The utility model provides an eliminate balancing unit of rolling mill HGC jar deviation, includes the HGC jar, goes up the supporting roll bearing frame, goes up the working roll bearing frame, bottom suspension runner bearing frame and lower working roll bearing frame, and the HGC jar is established in last supporting roll bearing frame top, go up the supporting roll bearing frame and go up the relative setting of working roll bearing frame, bottom suspension runner bearing frame and lower working roll bearing frame set up its characterized in that relatively: and rolling mill elastic damping bodies are respectively arranged between the upper supporting roll bearing seat and the upper working roll bearing seat and between the lower supporting roll bearing seat and the lower working roll bearing seat.

2. The balancing apparatus for eliminating the deviation of the rolling mill HGC cylinder according to claim 1, wherein: the rolling mill elastic damping body is a vertical rolling mill elastic damping body.

3. The balancing apparatus for eliminating the deviation of the rolling mill HGC cylinder according to claim 1, wherein: and two rolling mill elastic damping bodies are arranged between the upper supporting roll bearing seat and the upper working roll bearing seat, and the two elastic damping bodies are respectively arranged at the inlet and outlet positions at the two sides of the lower part of the upper supporting roll bearing seat.

4. The balancing apparatus for eliminating the deviation of the rolling mill HGC cylinder according to claim 1, wherein: and two rolling mill elastic damping bodies are arranged between the lower supporting roll bearing seat and the lower working roll bearing seat, and the two elastic damping bodies are respectively arranged at the inlet and outlet positions at the two sides of the upper part of the lower supporting roll bearing seat.

5. The balancing apparatus for eliminating the deviation of the rolling mill HGC cylinder according to claim 3 or 4, wherein: the rolling mill elastic damping body comprises a cylinder body, a damping body, a wear-resistant head and an adjusting pad, wherein an opening is formed in one end of the cylinder body, the wear-resistant head is provided with an open movable cylinder for the inner end, the damping body is arranged in the wear-resistant head, the inner end of the wear-resistant head is located in the cylinder body, the adjusting pad corresponds to the opening in the inner end of the wear-resistant head and is provided with a piston, the bottom of the cylinder body corresponds to the adjusting pad, and the outer end of the wear-resistant head is located outside the cylinder body.

6. The balancing apparatus for eliminating the deviation of the rolling mill HGC cylinder according to claim 5, wherein: the inner end opening part of the wear-resisting head is provided with a positioning column in threaded fit, the center of the positioning column is provided with a hole for the piston rod to pass through, a sealing structure matched with the outer wall of the piston rod is arranged in the hole, and the adjusting pad is positioned on the inner side of the positioning column.

7. The balancing apparatus for eliminating the deviation of the HGC cylinder of the rolling mill according to claim 6, wherein: the adjusting pads are a group which can be adjusted in quantity.

8. The balancing apparatus for eliminating the deviation of the rolling mill HGC cylinder according to claim 5, wherein: the bearing seat is provided with a cavity hole for mounting the rolling mill elastic damping body, the rolling mill elastic damping body and the cavity hole are in clearance fit, and lubricating oil is arranged in the clearance.

Technical Field

The invention relates to the technical field of plate and strip rolling, in particular to a balancing device for eliminating deviation of an HGC cylinder of a rolling mill.

Background

The rough rolling and finishing rolling machines of the plate strip are both provided with HGC oil cylinders, and most of the HGC oil cylinders are provided with two position sensors at the entrance position of the strip steel. Due to long-term high-load production and corrosion of severe environment, abrasion occurs to a housing, an abrasion-resistant plate, a roller bearing seat and a corresponding bearing part of a rolling mill, the superposition of various gaps can cause the upper bearing roller bearing seat to slightly incline along the direction of an entrance and an exit, so that two position sensors of HGC steel are deviated, and the condition that the adjustment range of the rolling mill is too small and the stability of the rolling mill is influenced, even the inner wall of an oil cylinder is scratched due to too large deviation value can be caused. The general processing method can measure, check and replace the size of a rolling mill window and a bearing seat and a bearing part which are correspondingly matched; the shutdown time is long, and sometimes the effect is not particularly obvious; if the deviation is less than 3mm, the process is not normally stopped due to the pressure of the production, but the rigidity of the rolling mill is affected.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to solve the technical problem of providing a balancing device for eliminating the deviation of an HGC cylinder of a rolling mill, which can balance partial rolling force deviation, has a deviation rectifying effect on slight inclination of the HGC cylinder under the condition of maintenance without stopping production and buffers the vibration impact of the rolling force on a bearing part.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

this balancing unit who eliminates rolling mill HGC jar deviation, including HGC jar, last supporting roll bearing frame, last working roll bearing frame, bottom suspension runner bearing frame and bottom working roll bearing frame, the HGC jar is established in last supporting roll bearing frame top, go up supporting roll bearing frame and last working roll bearing frame and set up relatively, bottom suspension runner bearing frame and bottom working roll bearing frame set up relatively, go up between supporting roll bearing frame and the last working roll bearing frame, all be equipped with the rolling mill elastic damping body between bottom suspension runner bearing frame and the bottom working roll bearing frame.

Further or preferred:

the rolling mill elastic damping body is a vertical rolling mill elastic damping body.

And two rolling mill elastic damping bodies are arranged between the upper supporting roll bearing seat and the upper working roll bearing seat, and the two elastic damping bodies are respectively arranged at the inlet and outlet positions at the two sides of the lower part of the upper supporting roll bearing seat.

And two rolling mill elastic damping bodies are arranged between the lower supporting roll bearing seat and the lower working roll bearing seat, and the two elastic damping bodies are respectively arranged at the inlet and outlet positions at the two sides of the upper part of the lower supporting roll bearing seat.

The rolling mill elastic damping body comprises a cylinder body, a damping body, a wear-resistant head and an adjusting pad, wherein an opening is formed in one end of the cylinder body, the wear-resistant head is provided with an open movable cylinder for the inner end, the damping body is arranged in the wear-resistant head, the inner end of the wear-resistant head is located in the cylinder body, the adjusting pad corresponds to the opening in the inner end of the wear-resistant head and is provided with a piston, the bottom of the cylinder body corresponds to the adjusting pad, and the outer end of the wear-resistant head is located outside the cylinder body.

The inner end opening part of the wear-resisting head is provided with a positioning column in threaded fit, the center of the positioning column is provided with a hole for the piston rod to pass through, a sealing structure matched with the outer wall of the piston rod is arranged in the hole, and the adjusting pad is positioned on the inner side of the positioning column.

The adjusting pads are a group which can be adjusted in quantity.

The bearing seat is provided with a cavity hole for mounting the rolling mill elastic damping body, the rolling mill elastic damping body and the cavity hole are in clearance fit, and lubricating oil is arranged in the clearance.

Compared with the prior art, the invention has the following advantages:

the balancing device for eliminating the deviation of the HGC cylinder of the rolling mill has reasonable structural design, can eliminate the accumulated deviation caused by the abrasion of the bearing part and can balance partial rolling force deviation; during steel rolling, extra balance moment is added to the working roll and the bearing seat of the supporting roll, and partial tipping moment is eliminated; under the condition of maintenance without stopping production, the device has a rectification function on slight inclination of the HGC cylinder, and buffers the vibration impact of rolling force on the bearing part; the size of the balance force can be adjusted by increasing or decreasing the gaskets, the installation is more convenient, the balance force can be detached at any time, and the influence on the production is small.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic diagram of the rough mill HGC cylinder deflection of the present invention.

FIG. 2 is a schematic sectional view of the elastic damping body of the rolling mill of the present invention.

FIG. 3 is a schematic view of the arrangement of the elastic damping bodies of the rolling mill.

Fig. 4 is an enlarged view of the lower portion of fig. 3.

In the figure:

the device comprises an HGC cylinder, 2 upper supporting roll bearing seats, 3 upper working roll bearing seats, 4 rolling mill elastic damping bodies, 5 cylinder bodies, 6 sealing structures, 7 adjusting pads, 8 damping bodies, 9 wear-resistant heads and 10 lower supporting roll bearing seats.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, the balancing device for eliminating the deviation of the HGC cylinder of the rolling mill comprises an HGC cylinder 1, an upper supporting roll bearing seat 2, an upper working roll bearing seat 3, a lower supporting roll bearing seat 10 and a lower working roll bearing seat, wherein the HGC cylinder 1 is arranged above the upper supporting roll bearing seat, the upper supporting roll bearing seat and the upper working roll bearing seat are oppositely arranged, and the lower supporting roll bearing seat and the lower working roll bearing seat are oppositely arranged; rolling mill elastic damping bodies 4 are respectively arranged between the upper supporting roll bearing seat and the upper working roll bearing seat and between the lower supporting roll bearing seat and the lower working roll bearing seat, and are respectively an upper rolling mill elastic damping body and a lower rolling mill elastic damping body.

The rolling mill elastic damping body 4 is a vertical rolling mill elastic damping body, has small influence on the change of rolling force and can buffer rolling impact.

Two upper rolling mill elastic damping bodies are arranged between the upper supporting roll bearing seat and the upper working roll bearing seat on the operation side and the transmission side respectively, and the two upper elastic damping bodies are respectively arranged at the inlet and outlet positions on the two sides of the lower part of the upper supporting roll bearing seat, such as the positions A and B in figure 3.

Two lower rolling mill elastic damping bodies are arranged between the operating side lower supporting roll bearing seat and the transmission side lower supporting roll bearing seat and between the lower working roll bearing seats, and the two lower elastic damping bodies are respectively arranged at the inlet and outlet positions at the two sides of the upper part of the lower supporting roll bearing seat, such as positions C and D in figure 3.

Preferably, the rolling mill elastic damping body comprises a cylinder body 5, a damping body 8, a wear-resistant head 9 and an adjusting pad 7, wherein an opening is formed in one end of the cylinder body, the wear-resistant head is a movable cylinder with an opening formed in the inner end, the damping body is arranged in the wear-resistant head, the inner end of the wear-resistant head is located in the cylinder body, the adjusting pad is arranged corresponding to the opening formed in the inner end of the wear-resistant head, a piston is arranged corresponding to the adjusting pad at the bottom of the cylinder body, and the outer end of the wear-resistant head is located outside the cylinder body.

The inner opening part of the wear-resisting head is provided with a positioning column in threaded fit, the center of the positioning column is provided with a hole for the piston rod to pass through, a sealing structure 6 matched with the outer wall of the piston rod is arranged in the hole, the adjusting pad is positioned on the inner side of the positioning column, the positioning column is easy and convenient to disassemble, and the adjusting pad is convenient to increase, decrease or replace.

The adjusting pads are a group which can be adjusted in quantity; the stroke of the damper is adjusted by adding or subtracting shims according to the change of the diameter of the field roller and the actual deviation.

The bearing seat is provided with a cavity hole for mounting the rolling mill elastic damping body, the rolling mill elastic damping body and the cavity hole are in clearance fit, and lubricating oil is arranged in the clearance. The length of the damping cylinder is adjusted according to the diameter and the rolling force of the roller, and the damping is checked to be in good contact with a bearing seat of the working roller when the working roller is installed.

The balance device has reasonable structural design, can eliminate the accumulated deviation caused by the abrasion of the bearing part and can balance partial rolling force deviation; during steel rolling, extra balance moment is added to the working roll and the bearing seat of the supporting roll, and partial tipping moment is eliminated; under the condition of maintenance without stopping production, the device has a rectification function on slight inclination of the HGC cylinder, and buffers the vibration impact of rolling force on the bearing part; the size of the balance force can be adjusted by increasing or decreasing the gaskets, the installation is more convenient, the balance force can be detached at any time, and the influence on the production is small.

The invention relates to a novel balance device of a rolling mill, which adopts a liquid with proper viscosity and compression performance, converts energy by utilizing the static pressure effect of the liquid, converts kinetic energy into required potential energy, plays a role in compressing, damping and eliminating gaps and achieves the effect of balancing the position deviation of a supporting roll. The elastic damping body balancing device seals the elastic damping body in a closed container, the stroke space is preset, the pressure of a roller system is borne, and the appearance can be designed according to actual requirements. The elastic damping body is barrel-shaped and is filled with prepressing force P through the one-way valve. When the elastic damping device works, when the external force is smaller than the pre-pressure, the piston is still, and when the external force is larger than the pre-pressure, the piston moves downwards, the volume of the elastic damping body in the cylinder body is reduced, and the pre-pressure is large until the volume is equal to the external force.

The change of the roll gap of the rolling mill is the basis of the design of the device. If the variation value of the distance between the bearing seats of the rolling mill is larger than the optimal pressure stroke of the piston rod, the adjustment of a gasket is considered. The elastic damping body is in clearance fit with the cavity hole of the roller bearing seat, and sliding friction is generated during use. During installation, the damping balancer and the cavity holes in the bearing seat are cleaned and coated with lubricating oil. The bearing seat cavity hole and the damping balancer should ensure the machining precision and ensure the vertical stress of the balancer, and the fit clearance between the gland hole and the damping balancer is not less than 0.4-0.5mm, on the basis, a sealing device is installed to prevent water and iron oxide scale from entering and corroding. The balancing device is a high-pressure container, and is used by being lightly held when the balancing device is used, particularly the position of the piston , gravity impact and oxygen cutting operation are avoided, the service life of the balancing device is as long as 2-5 years, and in order to ensure the service cycle, the balancing device is periodically checked for 2 times every year without maintenance in the middle.

As shown in fig. 1, elimination of HGC cylinder deviation in hot roughing mill:

the hot-rolling roughing mill consists of an HGC cylinder, upper and lower supporting roll bearing seats and a working roll bearing seat, and due to the influence of long-time high load and severe environment, wear-resisting plates on the bearing surfaces and the side surface of the mill are abraded to a certain extent, so that position sensors (S1\ S2) on two sides of the HGC cylinder are unequal, the upper supporting roll is inclined to form C2, the rigidity retention rate of the mill is reduced due to the increase of the inclination amount, the adjustment range of the HGC cylinder is reduced, even the production is influenced, and the complete deviation correction needs to be stopped for long time to replace corresponding wear parts. The elastic damping body is arranged between the upper working roll and the upper supporting roll bearing seat, so that the accumulated deviation caused by the abrasion of the bearing part can be eliminated, and the inclination condition of the supporting roll bearing seat is reduced through the balance of external force. The deviation of partial rolling force is balanced, the rigidity of the rolling mill is improved, and the deviation rectifying effect is realized on the slight inclination of the HGC cylinder under the condition of maintenance without stopping production, so that the vibration impact of the rolling force on the bearing part is buffered. The tilt C2 of the upper support roll chock can be balanced by the installation of an elastic damping pad. If the effect is not good, the device can be quickly disassembled, and the production is not influenced.

The above-mentioned features are merely for describing preferred embodiments of the present invention and may be arbitrarily combined to form a plurality of embodiments of the present invention.

The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.