阅读说明：本技术 实时获取轧机牌坊与轴承座间隙信息的检测元件主体结构 (Detection element main body structure for acquiring gap information between rolling mill housing and bearing seat in real time ) 是由 邢建康 彭艳 孙建亮 张明 戚向东 崔金星 杨彦博 刘才溢 于 2019-09-12 设计创作，主要内容包括：本发明涉及一种实时获取轧机牌坊与轴承座间隙信息的检测元件主体结构,其包括左磁座、左臂、左壳体、定位套、右磁座、杆、滑块、滑道、挡板、右臂、右壳体、电缆、传感器、左弹簧垫、密封圈、弹簧、定位销和右弹簧垫。使用时,将左磁座粘贴在轧机牌坊上,右磁座粘贴在支承辊或工作辊的轴承座上。轧机生产过程中,轴承座水平方向位移变化通过右磁座、杆、滑块、滑道、右臂、右壳体、右弹簧垫,进而传递到弹簧,弹簧将位移变化转换为力的变化,力通过左弹簧垫传递到传感器,传感器输出实时力变化的信号。最终通过传感器获取力的变化反映轴承座的位移变化,实现轧机牌坊与轴承座间隙信息的实时获取。(The invention relates to a detection element main body structure for acquiring gap information between a rolling mill housing and a bearing seat in real time. When in use, the left magnetic base is stuck on the mill housing, and the right magnetic base is stuck on the bearing seat of the supporting roll or the working roll. In the production process of the rolling mill, the horizontal displacement change of the bearing seat passes through the right magnetic seat, the rod, the sliding block, the sliding way, the right arm, the right shell and the right spring pad, and then is transmitted to the spring, the spring converts the displacement change into the change of force, the force is transmitted to the sensor through the left spring pad, and the sensor outputs a signal of real-time force change. Finally, the displacement change of the bearing seat is reflected by the change of the force acquired by the sensor, and the real-time acquisition of the gap information between the rolling mill housing and the bearing seat is realized.)

1. The utility model provides a obtain detecting element major structure of rolling mill memorial archway and bearing frame clearance information in real time which characterized in that: the device comprises a left magnetic seat, a left arm, a left shell, a positioning sleeve, a right magnetic seat, a rod, a sliding block, a slideway, a baffle, a right arm, a right shell, a cable, a sensor, a left spring pad, a spring, a positioning pin and a right spring pad; the left magnetic seat is connected to the top end of a left arm, and the bottom of the left arm is connected with the left shell; the cable is a signal cable of the sensor and is led out through a hole in the left shell; the sensor, the left spring pad, the spring and the right spring pad are sequentially arranged between the left shell and the right shell, the sensor is arranged in the left shell through bolts, the left spring pad is directly contacted with the sensor, the right spring pad is arranged in the right shell and is directly contacted with the right shell, and the spring is arranged between the left spring pad and the right spring pad; the spring converts displacement into force, so that the sensor acquires the change of the force, and the displacement is represented; the left spring pad and the right spring pad are made of spring retainers; the end part of the right shell is turned so that the right shell can be installed in the left shell; the bottom of the right arm material is connected with the right shell; the right magnetic seat, the rod, the sliding block and the slideway are sequentially connected, the right magnetic seat is connected with the rod through threads, the rod is installed in the sliding block, the sliding block is installed in the slideway, and the slideway is connected with the right arm; after the sliding block is arranged in the slideway, the baffle plates are arranged at two ends of the slideway; the locating sleeve is arranged on the outer side of the joint of the left shell and the right shell, and the relative position of the locating sleeve is fixed through the locating pin.

2. The main body structure of the detecting element for acquiring the gap information between the mill housing and the bearing seat in real time as claimed in claim 1, wherein: when the detection element is used, the positioning sleeve is firstly rotated and drives the positioning pin to move to the initial position of the right casing special-shaped groove, then the left magnetic seat is pasted on a mill housing, the right magnetic seat is pasted on a bearing seat of a supporting roll or a working roll, the pasting positions are polished in advance and are cleaned, and finally the positioning sleeve is rotated to the working position of the right casing special-shaped groove.

3. The main body structure of the detecting element for acquiring the gap information between the mill housing and the bearing seat in real time as claimed in claim 1, wherein: the outer dimensions of the left magnetic seat and the right magnetic seat are phi 25 x 11mm, the magnetic force is not less than 100N, the magnetic seats are insulated, and the magnetic seats bear the acceleration not less than 150 g.

4. The main body structure of the detecting element for acquiring the gap information between the mill housing and the bearing seat in real time as claimed in claim 1, wherein: an annular groove and two straight grooves are processed on the outer side of the left shell, the straight grooves are parallel to the axial direction of the left shell, and the two straight grooves are arranged at 180 degrees along the circumferential direction of the left shell by taking the axial line as the center on the outer side of the left shell; meanwhile, a hole with the diameter of 1.5-3 mm is processed in the left shell.

5. The main body structure of the detecting element for acquiring the gap information between the mill housing and the bearing seat in real time as claimed in claim 1, wherein: and after the cable is led out from the left shell, sealant is coated around the cable on the inner side and the outer side of the hole of the left shell for sealing.

6. The main body structure of the detecting element for acquiring the gap information between the mill housing and the bearing seat in real time as claimed in claim 1, wherein: the sensor can be a piezomagnetic sensor, a piezoelectric sensor or a resistance strain type sensor, and the protection grade is above IP 66.

7. The main body structure of the detecting element for acquiring the gap information between the mill housing and the bearing seat in real time as claimed in claim 1, wherein: the spring may also be of other types of elastomer than spring form.

8. The main body structure of the detecting element for acquiring the gap information between the mill housing and the bearing seat in real time as claimed in claim 1, wherein: the right casing inserts the part of left casing, processes an annular groove for the installation sealing washer, does not insert the part of left casing, processes two dysmorphism grooves, and two dysmorphism grooves use its axis to be 180 degrees arrangements along right casing circumferencial direction outside the right casing, and the dysmorphism groove divide into installation position, initial position and operating position triplex.

9. The main body structure of the detecting element for acquiring the gap information between the mill housing and the bearing seat in real time as claimed in claim 1, wherein: two T-shaped slideways are installed on the outer side of the right arm, the sliding block is installed on the slideways, and a circular linear bearing is installed on the sliding block.

10. The main body structure of the detecting element for acquiring the gap information between the mill housing and the bearing seat in real time as claimed in claim 1, wherein: four pins are arranged on the inner side of the positioning sleeve for positioning, wherein two positioning pins are arranged along the axial direction of the positioning sleeve, and the other two positioning pins and the positioning sleeve are arranged 180 degrees along the circumferential direction of the sleeve by taking the axial direction of the positioning sleeve as the center.

Technical Field

The invention relates to the field of automation of metallurgical mechanical equipment, in particular to a main body structure of a detection element for acquiring the information of a gap between a rolling mill housing and a bearing seat in real time.

Background

The reasonable selection of the gap value between the roller bearing seat and the housing is the premise that the rolling mill can normally produce. For example, in a strip mill, the gap is too small, so that the roller cannot be installed in the mill, or cannot be drawn out after being installed, thereby affecting normal roller replacement; the horizontal rigidity of the rolling mill can be influenced due to overlarge gaps, so that the rolling mill vibrates, the obvious thickness difference of a strip and light and dark stripes on the surface of the strip are caused, the product quality is influenced, even the strip breakage accident is caused, meanwhile, the abrasion of a roller can be accelerated, and finally, the equipment maintenance, the stable rolling operation and the product quality are all influenced.

The traditional measurement mode of the gap value between the roller bearing seat and the housing is that the width of the bearing seat and the opening degree of the housing are respectively measured, and then the difference between the opening degree of the housing of the rolling mill and the width of the bearing seat is calculated, namely the gap existing between the current bearing seat and the housing. The clearance control strategy between the roller bearing seat and the memorial archway is characterized in that firstly, a clearance control standard is established, the standard stipulates the allowable range of the clearance, if the measured clearance value is within the standard allowable range, the adjustment is not required, and if the clearance exceeds the standard allowable range, gaskets are required to be added on two sides of the bearing seat for corresponding adjustment.

The gap value measurement mode and the gap control strategy have the following disadvantages: firstly, the width of the bearing seat and the opening degree of the housing are regularly detected, if the detection and adjustment are carried out again every three months, the real-time performance of the gap control cannot be ensured, the gap is possibly too large but the detection and adjustment period is not reached, and the product and the equipment are adversely affected by continuous production under the condition; secondly, the establishment of the clearance control standard is mainly based on experience, and in order to avoid the phenomenon that the roller cannot be installed in the rolling mill or cannot be drawn out when the roller is replaced, the lower limit control of the allowable range of the clearance is larger, namely the clearance adjusted according to the standard is larger than the optimal value, so that the horizontal rigidity of the rolling mill is influenced, and the rolling mill vibration is caused; in addition, the width of the bearing seat and the opening degree of the memorial archway are detected by measuring a plurality of points of the wear-resistant lining plates of the bearing seat and the wear-resistant lining plates and then averaging the points, and the actual gap value is mainly determined by the high point of the lining plates, so that the measuring mode can cause errors; in addition, in the rolling process, gaps at four positions of the inlet and the outlet of the transmission side and the inlet and the outlet of the operation side of each roller are in dynamic change, and the condition that two ends of each roller respectively deviate to which side or whether the rollers are crossed cannot be observed in real time.

Aiming at the problems, a method for acquiring the clearance between the bearing seat of the rolling mill and the housing in real time is provided, and a sensor is adopted to detect the change of the clearance value on line so as to play a guiding role in clearance control. However, due to the influence of a large amount of cooling water, oil stains, and the like on a rolling site, the working environment is very poor, and conventional detection elements such as a laser displacement sensor, an eddy current displacement sensor, a magnetostrictive displacement sensor, and a pull rope (pull rod) type displacement sensor cannot stably work for a long time.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a main structure of a detection element for acquiring the information of the gap between a mill housing and a bearing seat in real time, which can work stably for a long time on a severe rolling field, monitor the position information of each roll bearing seat in real time and play a role in guiding the control of the gap between the mill housing and the bearing seat; and further has important significance for reducing the vibration of the rolling mill, reducing the abrasion of the roller and improving the product quality.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a main body structure of a detection element for acquiring gap information between a mill housing and a bearing seat in real time comprises a left magnetic seat, a left arm, a left shell, a positioning sleeve, a right magnetic seat, a rod, a sliding block, a slideway, a baffle, a right arm, a right shell, a cable, a sensor, a left spring pad, a spring, a positioning pin and a right spring pad; the left magnetic seat is connected to the top end of a left arm, and the bottom of the left arm is connected with the left shell; the cable is a signal cable of the sensor and is led out through a hole in the left shell; the sensor, the left spring pad, the spring and the right spring pad are sequentially arranged between the left shell and the right shell, the sensor is arranged in the left shell through bolts, the left spring pad is directly contacted with the sensor, the right spring pad is arranged in the right shell and is directly contacted with the right shell, and the spring is arranged between the left spring pad and the right spring pad; the spring converts displacement into force, so that the sensor acquires the change of the force, and the displacement is represented; the left spring pad and the right spring pad are made of spring retainers; the end part of the right shell is turned so that the right shell can be installed in the left shell; the bottom of the right arm material is connected with the right shell; the right magnetic seat, the rod, the sliding block and the slideway are sequentially connected, the right magnetic seat is connected with the rod through threads, the rod is installed in the sliding block, the sliding block is installed in the slideway, and the slideway is connected with the right arm; after the sliding block is arranged in the slideway, the baffle plates are arranged at two ends of the slideway; the locating sleeve is arranged on the outer side of the joint of the left shell and the right shell, and the relative position of the locating sleeve is fixed through the locating pin.

Preferably, when the detection element is used, the positioning sleeve is firstly rotated and drives the positioning pin to move to the initial position of the right housing special-shaped groove, then the left magnetic seat is pasted on the mill housing, the right magnetic seat is pasted on a bearing seat of a supporting roller or a working roller, the pasting positions are polished in advance and are cleaned, and finally the positioning sleeve is rotated to the working position of the right housing special-shaped groove.

Preferably, the outer dimension of the left magnetic seat and the right magnetic seat is phi 25 x 11mm, the magnetic force is not less than 100N, and the magnetic seats are insulated and bear the acceleration not less than 150 g.

Preferably, an annular groove and two straight grooves are processed on the outer side of the left shell, the straight grooves are parallel to the axial direction of the left shell, and the two straight grooves are arranged at the outer side of the left shell by taking the axial line as the center and forming an angle of 180 degrees along the circumferential direction of the left shell; meanwhile, a hole with the diameter of 1.5-3 mm is processed in the left shell.

Preferably, after the cable is led out from the left shell, the cable on the inner side and the outer side of the hole of the left shell is sealed by coating a sealant around the cable.

Preferably, the sensor can be a piezomagnetic sensor, a piezoelectric sensor or a resistance strain gauge sensor, and the protection grade is above IP 66.

Preferably, the spring may take the form of other types of elastomers besides a spring.

Preferably, the right shell is inserted into the left shell, an annular groove is formed for installing the sealing ring, the part which is not inserted into the left shell is formed with two special-shaped grooves, the two special-shaped grooves are arranged outside the right shell by taking the axis of the two special-shaped grooves as the center and forming 180 degrees along the circumferential direction of the right shell, and the special-shaped grooves are divided into three parts, namely an installation position, an initial position and a working position.

Preferably, two T-shaped slideways are installed on the outer side of the right arm, the sliding block is installed on the slideways, and a circular linear bearing is installed on the sliding block.

Preferably, four pins are arranged on the inner side of the positioning sleeve for positioning, wherein two positioning pins are arranged along the axial direction of the positioning sleeve, and the other two positioning pins and the positioning sleeve are arranged at an angle of 180 degrees along the circumferential direction of the sleeve by taking the axial direction of the positioning sleeve as the center.

Compared with the prior art, the main structure of the detection element for acquiring the gap information between the mill housing and the bearing seat in real time has the following beneficial effects:

1. the method can realize the real-time acquisition of the information of the gap between the mill housing and the bearing seat, can play a role in guiding the control of the gap between the mill housing and the bearing seat, avoids the condition that the gap is too large but the detection and adjustment period is not reached, and continues to produce adverse effects on products and equipment.

2. The method can realize the real-time acquisition of the gap information between the mill housing and the bearing seat, and carry out the fault diagnosis of the horizontal vibration of the mill according to the real-time horizontal direction signal of the bearing seat.

3. Compared with the traditional method for measuring the average value of a plurality of points, the method has the advantages that the measurement error is reduced, the lower limit of the allowable range of the clearance control standard can be further reduced on the basis of the original empirical establishment, the horizontal rigidity of the rolling mill is increased, and the vibration of the rolling mill is reduced.

4. The device can work stably for a long time on a rolling site with a severe working environment, and particularly avoids the damage of a large amount of cooling water on the site to the sensor.

Drawings

FIG. 1 is an appearance of a main structure of a detecting element for acquiring information of a gap between a mill housing and a bearing seat in real time according to the present invention;

FIG. 2 is an internal cross-sectional view of a main structure of a detecting element for acquiring gap information between a mill housing and a bearing seat in real time according to the present invention;

FIG. 3 is a schematic view showing the details of the main structure of the detecting element for acquiring the gap information between the housing of the rolling mill and the bearing seat in real time according to the present invention; and

FIG. 4 is a schematic diagram of the arrangement positions of the detecting elements in the main structure of the detecting elements for acquiring the gap information between the mill housing and the bearing seat in real time according to the present invention.

Reference numbers in the figures: 1-left magnetic base, 2-left arm, 3-left shell, 4-locating sleeve, 5-right magnetic base, 6-rod, 7-slide block, 8-slide way, 9-baffle, 10-right arm, 11-right shell, 12-cable, 13-sensor, 14-left spring pad, 15-sealing ring, 16-spring, 17-locating pin, 18-right spring pad, 301-annular groove, 302-straight groove, 1101-installation position, 1102-initial position, 1103-working position, 00-detection element, 01-mill housing, 02-bearing base.

Detailed Description

A main body structure of a detection element for acquiring gap information between a rolling mill housing and a bearing seat in real time comprises a left magnetic seat, a left arm, a left shell, a positioning sleeve, a right magnetic seat, a rod, a sliding block, a sliding way, a baffle, a right arm, a right shell, a cable, a sensor, a left spring pad, a sealing ring, a spring, a positioning pin and a right spring pad. The outer dimensions of the left magnetic seat and the right magnetic seat are phi 25 x 11mm, the magnetic force is not less than 100N, and the magnetic seats are insulated and can bear the acceleration not less than 150 g; the left magnetic seat is provided with a stud (M5-M6), and the right magnetic seat is provided with a threaded hole (M5-M6). The left arm is made of stainless steel, a threaded hole which is installed with the left magnetic base stud is machined in the top end of the left arm, a cylindrical counter sink is machined in the bottom of the left arm, and the left arm is connected with the left shell through a bolt convenient to use. The left shell is made of stainless steel, the maximum diameter position is phi 40-60 mm, an annular groove and two straight grooves are processed on the outer side of the left shell, the straight grooves are parallel to the axial direction of the left shell, and the two straight grooves are arranged at the outer side of the left shell in a 180-degree mode along the circumferential direction of the left shell by taking the axial line as the center; meanwhile, a hole with the diameter of 1.5-3 mm is processed in the left shell. The cable is a signal cable of the sensor and is led out from the hole; and after the cable is led out, sealing glue is coated around the cable on the two sides inside and outside the hole for sealing. Install sensor, left spring pad, spring, right spring pad between left casing and the right casing in proper order, sensor is installed in left casing with the bolt promptly, left spring pad and sensor direct contact, and right spring pad is placed in right casing, with right casing direct contact, and the spring is in between left spring pad and the right spring pad. The sensor can be a piezomagnetic sensor, a piezoelectric sensor or a resistance strain type sensor, and the protection grade is above IP 66. The spring mainly acts on converting displacement into force, so that the sensor acquires the change of the force, and the displacement is represented. Thus, other types of elastomers may be used for the spring. The left spring pad and the right spring pad are made of stainless steel and play a role of a spring retainer, and the spring side center of the left spring pad and the spring side center of the right spring pad are provided with threaded holes for facilitating installation or disassembly of the spring pads. If necessary, a gasket with a certain thickness can be additionally arranged between the right spring cushion and the right shell for adjusting the prestress of the spring. The right shell is made of stainless steel, the maximum diameter position is phi 40-60 mm, the end part of the right shell is turned, the right shell can be installed in the left shell, a part of the right shell is inserted into the left shell, an annular groove is machined for installing a sealing ring, the part of the right shell which is not inserted into the left shell is machined into two special-shaped grooves, the two special-shaped grooves are arranged outside the right shell in a 180-degree mode along the circumferential direction of the right shell by taking the axis of the two special-shaped grooves as the center, and the special-shaped grooves are divided into three parts. The right arm material is stainless steel, and the bottom processing cylindricality counter sink is convenient for use the bolt to be connected it with right casing, and two T type slides are installed to the right arm outside. The slider is installed on the slide to be equipped with circular linear bearing on the slider. The baffle is made of plastic or rubber, and is arranged at two ends of the slide way after the slide block is arranged in the slide way. The rod is made of stainless steel and is processed into a step shape, and one end of the rod is processed with a (M5-M6) threaded hole for mounting the right magnetic seat. The locating sleeve is made of stainless steel, the inner diameter of the locating sleeve is the same as the maximum diameter of the left shell and the right shell, the wall thickness of the locating sleeve is 1-3 mm, four pins are installed on the inner side of the locating sleeve for locating, two locating pins are arranged in the axis direction of the locating sleeve, and the other two locating pins and the locating sleeve are arranged in a 180-degree mode in the circumferential direction of the locating sleeve by taking the axis of the locating sleeve as the center. The positioning pin is made of stainless steel, the diameter of the positioning pin is phi 1.5-3 mm, and the length of the positioning pin is 1-2 mm.

The sealing rubber around the cables on the inner side and the outer side of the left shell hole and the sealing ring on the right shell can greatly improve the waterproof capability of the detection element, so that the detection element can work stably for a long time on a rolling site with a very severe working environment, and particularly, the sensor is prevented from being damaged by a large amount of cooling water on the site.

The mounting position of the special-shaped groove on the right shell can lead the positioning pin on the positioning sleeve into the special-shaped groove smoothly when the detection element is assembled, so that the assembly is realized; when the positioning pin on the positioning sleeve is positioned at the initial position of the special-shaped groove, the spring has certain prestress, the sensor is positioned in the middle of the measuring range, and the right shell cannot axially move relative to the left shell; when the positioning pin on the positioning sleeve is located at the working position of the special-shaped groove, the positioning pin can move in the special-shaped groove within a certain range along the axis direction of the right shell, so that the gap information of the mill housing and the bearing seat can be acquired, the limiting effect can be achieved, and the sensor can be prevented from being damaged by the occurrence of unexpected conditions such as exceeding the range.

During the working process of the rolling mill, the bearing seat of the supporting roll or the working roll is stressed to vibrate, so that displacement changes can be generated in the horizontal direction, the vertical direction and the axial direction. The direct clearance between the bearing seat and the rolling mill housing is influenced by the displacement change in the horizontal direction, the influence of the axial displacement of the bearing seat can be eliminated by introducing the sliding block, the influence of the vertical displacement of the bearing seat can be eliminated by introducing the sliding way, and therefore the displacement change in the horizontal direction of the bearing seat is only collected.

A detection element for acquiring the information of the gap between a rolling mill housing and a bearing seat in real time can be used for acquiring the information of the gap between a supporting roll or a working roll bearing seat and the rolling mill housing in real time. When the positioning device is used, the positioning sleeve is firstly rotated and drives the positioning pin to move to the initial position of the right casing special-shaped groove (marks can be processed on the positioning sleeve and the right casing, the positioning pin is convenient to distinguish and is located at the installation position, the initial position or the working position), the left magnetic seat is pasted on a mill housing, the right magnetic seat is pasted on a bearing seat of a supporting roll or a working roll, the pasting positions are polished respectively in advance, and then the positioning sleeve is rotated to the working position of the right casing special-shaped groove. In the production process of the rolling mill, the horizontal displacement change of the bearing seat passes through the right magnetic seat, the rod, the sliding block, the sliding way, the right arm, the right shell and the right spring pad, and then is transmitted to the spring, the spring converts the displacement change into the change of force, the force is transmitted to the sensor through the left spring pad, and the sensor outputs a signal of real-time force change. Finally, the displacement change of the bearing seat is reflected by the change of the force acquired by the sensor, and the real-time acquisition of the gap information between the rolling mill housing and the bearing seat is realized.

Taking the working rolls of the four-high mill as an example, it should be noted that the method can be applied to a six-high mill or other types of mills to achieve real-time acquisition of the information of the gap between the mill housing and the bearing seat.

The invention is further described below with reference to the accompanying drawings.