Rolling mill bearing seat gap online detection device

Abstract

The utility model provides a rolling mill bearing seat clearance on-line detection device which comprises a sensor, the sensor is installed on a rack lining plate or a bearing seat lining plate, a rolling mill clearance side of the rack lining plate or the bearing seat lining plate is provided with a sensor installation groove, the sensor is installed in the sensor installation groove through a bolt, and the sensor is installed on the rack lining plate or the bearing seat lining plate. A sensor mounting groove is formed in the rack lining plate, a through hole is formed in the sensor mounting groove, a wire groove is formed in the rack side of the rack lining plate or the bearing seat side of the bearing seat lining plate, a communication cable of the sensor penetrates through the through hole and is led out of the wire groove, and the leading-out end of the communication cable is connected to signal acquisition equipment; and the sensor is calibrated before use. The device can work stably for a long time in a severe rolling site, and position information of each roller bearing seat can be monitored on line.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic measurement of metallurgical mechanical equipment, in particular to an online detection device for the clearance of a rolling mill bearing seat. Background Art

[0002] Reasonable selection of the gap value between the roller bearing seat and the frame is the premise for the normal production of the rolling mill. For example, in the plate and strip rolling mill, if the gap is too small, the roller cannot be loaded into the rolling mill, or cannot be pulled out after loading, affecting the normal roll change; if the gap is too large, it will affect the horizontal rigidity of the rolling mill, thus causing the rolling mill to vibrate, resulting in obvious thickness difference of the strip, light and dark stripes on the surface of the strip, affecting product quality, and even breaking the strip. At the same time, it will accelerate the wear of the roller, and ultimately have an adverse effect on equipment maintenance, stable rolling operation and product quality.

[0003] The service environment of the rolling mill is harsh. During operation, the bearing seat liner and the frame liner will wear to varying degrees, causing the gap between the bearing seat and the frame to gradually increase, which will in turn aggravate the wear of the liner and other components. The uneven wear of the bearing seats of the rolling mill will also cause the rollers to cross. The width between the two liner surfaces of the bearing seat can be measured with an outside micrometer, and the crotch size of the frame can be measured with an inside micrometer, a 3D laser tracker or a total station. The gap of the rolling mill bearing seat is obtained by calculating the difference between the crotch size of the frame and the width of the bearing seat. At present, no matter what method is used, the detection of the gap must be carried out after the production is stopped, and the real-time acquisition of the gap information cannot be guaranteed. In addition, the shutdown detection directly affects the economic benefits of the enterprise. Utility Model Content

[0004] According to the technical problems raised above, an online detection device for the gap between the bearing seat of a rolling mill is provided. The utility model can work stably for a long time in a harsh rolling site, monitor the position information of each roller bearing seat online, and can play a guiding role in controlling the gap between the bearing seat of the rolling mill and the frame, which is of great significance for reducing the vibration of the rolling mill, reducing the wear of the rollers and improving the product quality. The technical means adopted by the utility model are as follows:

[0005] An online detection device for the gap of a rolling mill bearing seat comprises: a sensor, wherein the sensor is mounted on a frame liner or a bearing seat liner, a sensor mounting groove is processed on the rolling mill gap side of the frame liner or the bearing seat liner, the sensor is mounted in the sensor mounting groove by bolts, a through hole is processed in the sensor mounting groove, a wire groove is processed on the frame side of the frame liner or the bearing seat side of the bearing seat liner, a communication cable of the sensor passes through the through hole and is led out by the wire groove, and the lead-out end of the communication cable is connected to a signal acquisition device; the sensor is calibrated before use.

[0006] Furthermore, the sensor is an eddy current displacement sensor, the thickness of the sensor is 10-20 mm, the measuring range is 1-4 mm, the detection resolution is ≤1 μm, and the protection level is IP67.

[0007] Furthermore, the sensor is provided with two Φ2.2-4.5mm mounting holes, the bottom surface of the sensor mounting groove is processed with two M2-M4 threaded holes, and the bolts are connected with the threaded holes and the mounting holes to realize the installation of the sensor.

[0008] Furthermore, the size of the sensor installation groove is not less than three times the diameter of the sensor probe, and the depth of the sensor installation groove is 0.2-0.5 mm greater than the thickness of the sensor.

[0009] Furthermore, a metal plate is used for calibration, wherein the size of the metal plate is ≥100*100 mm, the thickness is ≥10 mm, and the material is the same as that of the bearing seat liner.

[0010] Furthermore, one sensor, two sensors or multiple sensors are installed on the frame lining or the bearing seat lining. When the number of the sensors is greater than one, the average value of the detection results of the sensors on the frame lining or the bearing seat lining is taken.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. The utility model can work stably for a long time in a harsh rolling site, monitor the position information of each roller bearing seat online, and play a guiding role in controlling the gap between the rolling mill bearing seat and the frame.

[0013] 2. The utility model can detect the dynamic changes of the positions of the bearing seats, such as whether there is a roller crossing phenomenon, and can guide the making of corresponding reasonable adjustments, thereby improving the rolling stability.

[0014] 3. The sensor of the utility model is installed on the frame lining or the bearing seat lining. The sensor detects the distance from the sensor to the bearing seat lining or the frame lining, and obtains the gap value between the frame lining and the bearing seat lining through calculation.

[0015] Based on the above reasons, the utility model can be widely promoted in the fields of mechanical equipment automatic measurement and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 The utility model is a structural schematic diagram of an online detection device for the gap of a rolling mill bearing seat.

[0018] Figure 2 The utility model is a schematic diagram of the installation position of an online detection device for the gap of a rolling mill bearing seat.

[0019] In the figure: 1. frame lining; 2. sensor; 3. communication cable; 4. bearing seat lining; 5. roller bearing seat; 6. frame. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0021] The utility model provides an online detection device for the gap of a rolling mill bearing seat, comprising a sensor 2 installed on a frame liner 1, a sensor installation groove is processed on the rolling mill gap side of the frame liner 1, a through hole is processed at one end of the sensor installation groove, and a wire groove is processed on the frame side; the sensor 2 is installed in the sensor installation groove of the frame liner 1 by bolts, a communication cable 3 of the sensor 2 passes through the through hole in the sensor installation groove of the frame liner 1, and is led out from the wire groove of the frame liner 1, and the communication cable 3 is connected to a signal acquisition device (using existing equipment); the sensor 2 must be calibrated before use, and during use, the sensor 2 detects the distance from the sensor to the bearing seat liner 4, and obtains the gap value between the frame liner 1 and the bearing seat liner 4 by calculation. The utility model can work stably for a long time in a harsh rolling site and monitor the position information of each roller bearing seat 5 online.

[0022] As a preferred embodiment, the sensor 2 is an eddy current displacement sensor, the thickness of the sensor 2 is 10-20 mm, the measuring range is 1-4 mm, the detection resolution is ≤1 μm, the protection level is IP67, and the sensor 2 has two Φ2.2-4.5 mm mounting holes.

[0023] As a preferred embodiment, the sensor mounting groove on the frame lining 1 is not less than three times the diameter of the sensor 2 probe, the depth of the sensor mounting groove is greater than 0.2-0.5mm of the thickness of the sensor 2, and two M2-M4 threaded holes are processed on the bottom surface of the sensor mounting groove for installing the sensor 2.

[0024] As a preferred embodiment, the selection of the position of the sensor mounting groove on the frame liner 1 needs to take into account the stroke of the rolling mill and the roller shifting, so as to avoid detection errors caused by the sensor 2 detecting the fixing bolt holes and oil groove positions on the corresponding bearing seat liner 4 during the detection process.

[0025] As a preferred embodiment, the sensor 2 needs to be calibrated before installation, and the metal plate used for calibration is ≥100*100mm, with a thickness of ≥10mm and a material that is the same as that of the bearing seat liner 4 being measured.

[0026] As a preferred embodiment, one sensor 2 may be installed on the frame lining 1, or two or more sensors 2 may be installed. When the number of sensors 2 is greater than one, the average value of the detection results of the sensors 2 on the frame lining 1 is taken to improve the detection accuracy.

[0027] Taking a four-roll mill as an example, the frame lining 1 includes 8 linings on the frame corresponding to the upper and lower support roll bearing seats and 8 linings on the balance bending roll cylinder block corresponding to the upper and lower working roll bearing seats (the balance bending roll cylinder block is installed on the frame). When performing online detection of the gap of the rolling mill bearing seat, the sensor 2 can be installed on all frame linings 1 to detect the gap information of 16 positions of the rolling mill; the sensor 2 can also be installed only in the lining on the balance bending roll cylinder block to detect the gap information of 8 positions corresponding to the working roll bearing seat; the sensor 2 can also be installed only in the lining on the balance bending roll cylinder block on the exit side of the rolling mill to detect the gap information of 4 positions corresponding to the working roll bearing seat.

[0028] It should be noted that a sensor installation groove may be machined on the bearing seat liner 4, and the sensor 2 may be installed in the bearing seat liner 4. During use, the sensor 2 detects the distance from the sensor to the frame liner 1, and obtains the clearance value between the frame liner 1 and the bearing seat liner 4 through calculation. If the sensor 2 is installed on the frame liner 1, the detection process may not be affected by roller replacement; if the sensor 2 is installed on the bearing seat liner 4, the communication cable 3 needs to be disassembled before and after roller replacement.

[0029] Example 1

[0030] An online detection device for the gap between the bearing seats of a rolling mill, such as Figure 1 As shown, it includes a sensor 2 mounted on a frame liner 1; Figure 2 As shown, during use, a sensor 2 is installed in each of the frame lining plates 1 on the balance bending roll cylinder block at the exit side of the rolling mill. The sensor 2 detects the distance from the sensor to the bearing seat lining plate 4, and obtains the gap value between the frame lining plate 1 and the bearing seat lining plate 4 through calculation.

[0031] The sensor 2 is an eddy current displacement sensor with a thickness of 12 mm, a measuring range of 2 mm, a detection resolution of 1 μm, a probe diameter of Φ8 mm, and a protection level of IP67. The sensor 2 has two Φ3.5 mm mounting holes. The sensor 2 is calibrated before installation. The metal plate used for calibration is a rectangular plate of 150*150*10 mm, and the material is the same as that of the bearing seat liner 4. The frame liner 1 is machined with a sensor mounting groove on the mill gap side. The machining position of the sensor mounting groove needs to take into account the position of the fixing bolt hole and the oil groove on the bearing seat liner 4, as well as the travel of the mill depression and the roller shifting, to avoid the sensor 2 detecting during the detection process. The detection error is caused by the position of the fixing bolt holes and the oil grooves corresponding to the bearing seat liner 4; the sensor mounting groove is a 30*40mm rectangular groove, the four corners of the rectangle are processed as R2 fillets, the mounting groove depth is 12.5mm, and two M3 threaded holes are processed on the bottom of the mounting groove. The sensor 2 is fixed to the threaded holes in the sensor mounting groove with M3 bolts, and a through hole is processed at one end of the sensor mounting groove. The frame liner 1 is processed with a wire groove on one side of the frame 6. The communication cable 3 of the sensor 2 passes through the through hole of the sensor mounting groove on the frame liner 1 and is led out from the wire groove of the frame liner 1. The communication cable 3 is connected to the signal acquisition equipment for online detection.

[0032] It should be noted that a sensor installation groove may be machined on the bearing seat liner 4, and the sensor 2 may be installed in the bearing seat liner 4. During use, the sensor 2 detects the distance from the sensor to the frame liner 1, and obtains the clearance value between the frame liner 1 and the bearing seat liner 4 through calculation. If the sensor 2 is installed on the frame liner 1, the detection process may not be affected by roller replacement; if the sensor 2 is installed on the bearing seat liner 4, the communication cable 3 needs to be disassembled before and after roller replacement.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An online detection device for the gap of a rolling mill bearing seat, characterized in that: include: A sensor (2), wherein the sensor (2) is mounted on a frame liner (1) or a bearing seat liner (4); a sensor mounting groove is processed on the rolling mill gap side of the frame liner (1) or the bearing seat liner (4); the sensor (2) is mounted in the sensor mounting groove by bolts; a through hole is processed in the sensor mounting groove; a wire groove is processed on the frame side of the frame liner (1) or the bearing seat side of the bearing seat liner (4); a communication cable (3) of the sensor (2) passes through the through hole and is led out from the wire groove; the lead-out end of the communication cable (3) is connected to a signal acquisition device; the sensor (2) is calibrated before use.

2. The rolling mill bearing seat gap online detection device according to claim 1 is characterized in that: The sensor (2) is an eddy current displacement sensor, the thickness of the sensor (2) is 10-20 mm, the measuring range is 1-4 mm, the detection resolution is ≤1 μm, and the protection level is IP67.

3. The rolling mill bearing seat gap online detection device according to claim 1 is characterized in that: The sensor (2) is provided with two mounting holes of Φ2.2-4.5 mm, and the bottom surface of the sensor mounting groove is processed with two threaded holes of M2-M4, and the bolts are matched and connected with the threaded holes and the mounting holes to realize the installation of the sensor (2).

4. The rolling mill bearing seat gap online detection device according to claim 1 is characterized in that: The size of the sensor installation groove is not less than three times the diameter of the sensor (2) probe, and the depth of the sensor installation groove is 0.2-0.5 mm greater than the thickness of the sensor (2).

5. The rolling mill bearing seat gap online detection device according to claim 1 is characterized in that: A metal plate is used for calibration, wherein the size of the metal plate is ≥100*100 mm, the thickness is ≥10 mm, and the material is the same as that of the bearing seat liner (4).

6. The rolling mill bearing seat gap online detection device according to claim 1, characterized in that: One sensor (2), two sensors (2) or a plurality of sensors (2) are installed on the frame lining (1) or the bearing seat lining (4); when the number of the sensors (2) is greater than one, an average value of the detection results of the sensors (2) on the frame lining (1) or the bearing seat lining (4) is taken.

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