CN115193930A - Vertical roller verticality calibration device and calibration method - Google Patents
Vertical roller verticality calibration device and calibration method Download PDFInfo
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- CN115193930A CN115193930A CN202210865206.5A CN202210865206A CN115193930A CN 115193930 A CN115193930 A CN 115193930A CN 202210865206 A CN202210865206 A CN 202210865206A CN 115193930 A CN115193930 A CN 115193930A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a vertical roll verticality calibration device and a calibration method, and relates to the technical field of measurement. The distance measuring device comprises a support rod and a distance measuring instrument, wherein the support rod comprises a first end and a second end, a standard rod is arranged on the second end, the length direction of the standard rod is intersected with the length direction of the support rod, and the distance measuring instrument is arranged on the second end correspondingly; the measuring device comprises a standard rod, a support plane, a distance measuring instrument and a distance measuring instrument, wherein the plane where the length direction of the standard rod and the length direction of the support rod are located is the support plane, the plane where the length direction of the standard rod and the normal direction of the support plane are located is the measuring plane, the distance measuring direction of the distance measuring instrument is parallel to the support plane and is located in the measuring plane, and the distance between the distance measuring direction of the distance measuring instrument and the support plane is the measuring distance. The vertical roller distance measuring device comprises a standard rod, a supporting rod and a distance measuring instrument, wherein the standard rod and the distance measuring instrument can be inserted between two vertical rollers by the supporting rod, and the distance measuring instrument can measure the distance between the two vertical rollers without manual entry, so that the vertical roller distance measuring device is simple and convenient.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a vertical roll verticality calibration device and a calibration method.
Background
The roughing mill usually comprises two vertical rolls, and the verticality of the vertical rolls needs to be calibrated to ensure the rolling quality of products. At present, when the vertical rolls are calibrated, firstly, the opening degree between the two vertical rolls is adjusted to a standard value, then, a perpendicular line is placed between the vertical roll housing and the side pressure balance beam, a worker enters a gap between the vertical roll housing and the side pressure balance beam, and a measuring tool is used for respectively measuring the positions of top covers of an upper pressure cylinder and a lower pressure cylinder to the perpendicular line, so that the verticality of the vertical rolls is calibrated. The space between the vertical roll memorial archways and the side pressure balance beam is narrow, the operation of workers is difficult, the measurement result precision is poor, the efficiency is low, and the safety risks such as being trapped exist.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention aims to provide a device and a method for calibrating the verticality of a vertical roll, which are used for solving the problem of difficulty in calibrating the verticality of the vertical roll of a rolling mill in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a vertical roller verticality calibrating apparatus, including:
a support rod comprising a first end and a second end,
a standard bar disposed on the second end, a length direction of the standard bar intersecting a length direction of the supporting bar, an
The distance measuring instrument is arranged on the second end correspondingly;
the measuring device comprises a standard rod, a support plane, a distance measuring instrument and a distance measuring instrument, wherein the plane where the length direction of the standard rod and the length direction of the support rod are located is the support plane, the plane where the length direction of the standard rod and the normal direction of the support plane are located is the measuring plane, the distance measuring direction of the distance measuring instrument is parallel to the support plane and is located in the measuring plane, and the distance between the distance measuring direction of the distance measuring instrument and the support plane is the measuring distance.
Optionally, be provided with the rotation part on the second end, the distancer is installed on the rotation part, the rotation part is used for the drive the distancer winds the axis of rotation of distancer rotates, the axis of rotation of distancer with the range finding direction of distancer is crossing.
Optionally, a driving portion is arranged on the first end, the driving portion is in transmission connection with the rotating portion, and the driving portion is used for driving the rotating portion to rotate.
Optionally, the driving portion is a driving pulley, the rotating portion is a rotating pulley, a transmission belt is arranged between the driving portion and the rotating portion, and the driving portion drives the rotating portion to rotate through the transmission belt.
Optionally, the range finder further comprises a limiting part for limiting the rotation angle of the range finder.
Optionally, the number of the limiting parts is two, and the two limiting parts are respectively arranged on two sides of the distance measuring instrument along the length direction of the standard rod.
Optionally, the rotating portion is provided with a limiting stop lever matched with the limiting portion, the limiting stop lever rotates along with the distance measuring instrument, and the limiting portion is matched with the limiting stop lever to limit the distance measuring instrument.
Optionally, the standard bar is perpendicular to the support bar.
Optionally, a distance measuring switch is arranged on the distance measuring instrument, a trigger rod used for triggering the distance measuring switch is further arranged on the supporting rod, and the trigger rod comprises an operation end close to the first end and a trigger end corresponding to the distance measuring switch.
The invention also provides a method for calibrating the verticality of the vertical roll, which uses the verticality calibrating device of the vertical roll, and comprises the following steps:
adjusting the distance between the two vertical rollers to enable the distance between the two vertical rollers on the reference surface to be the standard distance corresponding to the standard rod;
placing the standard rod between the two vertical rollers to enable the support plane of the vertical roller verticality calibration device to coincide with the reference plane;
and obtaining a measuring distance between the two vertical rolls through a distance meter, and adjusting the position between the two vertical rolls according to the measuring distance and the standard distance until the measuring distance meets a preset threshold value.
As mentioned above, the vertical roller verticality calibrating device and the vertical roller verticality calibrating method have the following beneficial effects: because including bracing piece and distancer, the bracing piece can stretch into the distancer between two edgers, and the distancer can measure the interval between two edgers, need not artifical entering, and easy operation is convenient.
Drawings
Fig. 1 is a schematic structural diagram of a vertical roll verticality calibrating device in the embodiment of the invention.
Fig. 2 is a schematic use diagram of the vertical roll verticality calibrating device in the embodiment of the present invention.
Description of the reference numerals
The device comprises a standard rod 1, a support rod 2, a driving part 3, a trigger rod 4, a hinge point 5, a distance measuring instrument 6, a transmission belt 7, a vertical roller 8, a limiting part 11, a limiting stop lever 61 and a rotating bearing 62.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated. The structures, the proportions, the sizes, and the like shown in the drawings attached to the present specification are only used for matching with the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used for limiting the conditions under which the present invention can be implemented, so that the present invention has no technical essence, and any structural modification, changes of the proportion relation, or adjustment of the size, should fall within the scope of the technical disclosure of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1, the present embodiment provides a device for calibrating verticality of a vertical roll, which includes a standard rod 1, a supporting rod 2 and a distance meter 6, wherein the supporting rod 2 includes a first end and a second end, the first end is used for holding,
the standard rod 1 is arranged at the second end, the length direction of the standard rod 1 is intersected with the length direction of the supporting rod 2, and the distance measuring instrument is arranged on the second end correspondingly.
Wherein, the length direction of reference bar 1 with the plane at the length direction place of bracing piece 2 is the supporting plane, the length direction of reference bar 1 with the plane that the normal direction of supporting plane formed is the measuring plane, the range finding direction of distancer is on a parallel with the supporting plane just is in the measuring plane, the range finding direction of distancer 6 and the interval between the supporting plane are the measuring interval.
In one embodiment, a rotating portion is disposed on the second end, the distance meter 6 is mounted on the rotating portion, the rotating portion is used for driving the distance meter 6 to rotate around a rotating axis of the distance meter 6, and the rotating axis of the distance meter 6 intersects with a distance measuring direction of the distance meter 6.
In this embodiment, distancer 6 is laser range finder, and distancer 6 can with remove the end, like cell-phone, flat board etc to mode wireless connection such as mobile network, bluetooth, distancer 6 is direct wireless transmission to removing the end with the measuring result, and the staff of being convenient for reads.
In one embodiment, a driving portion 3 is disposed on the first end, the driving portion 3 is in transmission connection with the rotating portion, and the driving portion 3 is configured to drive the rotating portion to rotate. The first end is used for holding, and the driving part 3 is arranged on the first end, so that the operation of a worker is facilitated.
Specifically, the driving portion 3 is a driving pulley, the rotating portion is a rotating pulley, a transmission belt 7 is arranged between the driving portion 3 and the rotating portion, and the driving portion 3 drives the rotating portion to rotate through the transmission belt 7. In this embodiment, the rotating portion is rod-shaped, one end of the rotating portion is rotatably connected to the support rod 2 through a rotating bearing 62, and the distance meter 6 is provided at the other end of the rotating portion. When the rotating part is required to rotate, the worker can rotate the driving part 3, and the driving part 3 can drive the rotating part to rotate through the transmission belt 7.
In one embodiment, the distance measuring device 6 has a distance measuring switch, the supporting rod 2 is further provided with a triggering rod 4 for triggering the distance measuring switch, and the triggering rod 4 includes an operating end disposed near the first end and a triggering end disposed corresponding to the distance measuring switch. When 6 measurements of needs distancer, the staff passes through trigger bar 4 and triggers range switch, need not the staff and gets into between two edgers 8, and is simple, safety.
Specifically, be provided with support branch on the bracing piece 2, trigger bar 4 articulates on support branch, and when needs triggered distancer 6, the staff rotated around the splice point through the operation end, made the trigger end trigger distancer 6's range switch, accomplished the measurement.
In this embodiment, the rotation axis of the distance meter 6 is perpendicular to the distance measuring direction of the distance meter 6.
In one embodiment, the second end is provided with a standard rod 1, and the standard rod 1 is perpendicular to the rotation axis of the distance measuring instrument 6. The length of the modular pole 1 can be adjusted according to the designed spacing between the vertical rolls 8. In this embodiment, the distance between the two vertical rollers 8 is 1300mm, and therefore the length of the standard bar 1 in this embodiment is also 1300mm.
In one embodiment, the range finder further comprises a limiting part 11 for limiting the rotation angle of the range finder 6, and when the limiting part 11 limits the range finder 6, the range finding direction of the range finder 6 is parallel to the standard pole 1.
Specifically, the number of the limiting parts 11 is two, and the two limiting parts 11 are respectively arranged on two sides of the distance measuring instrument 6 along the length direction of the standard rod 1.
The rotating portion is provided with a limiting stop lever matched with the limiting portion 11, the limiting stop lever rotates along with the distance measuring instrument 6, and the limiting portion 11 is matched with the limiting stop lever 61 to limit the distance measuring instrument 6. When the rotating part rotates, the limit stop lever 61 rotates together with the rotating part, and when the rotating part rotates in place, the limit part 11 blocks the limit stop lever 61, thereby ensuring the rotation angle of the rotating part.
In this embodiment, the standard bar 1 is perpendicular to the support bar 2. Specifically, in the present embodiment, the standard rod 1, the support rod 2 and the rotating portion are perpendicular to each other.
As shown in fig. 2, the present embodiment further provides a method for calibrating the verticality of the vertical roll, which uses the verticality calibrating apparatus for a vertical roll according to any one of the above embodiments, and includes the following steps:
adjusting the distance between the two vertical rolls to enable the distance between the two vertical rolls on the reference surface to be the standard distance corresponding to the standard rod; placing the standard rod between the two vertical rolls to enable the support plane of the vertical roll verticality calibration device to coincide with the reference plane; and obtaining a measuring distance between the two vertical rolls through a distance meter, and adjusting the position between the two vertical rolls according to the measuring distance and the standard distance until the measuring distance meets a preset threshold value.
Specifically, the method comprises the following steps:
s1, adjusting the distance between two vertical rollers 8, namely the roller gap to a design value, namely the length value of a standard rod. In this example 1300mm.
And S2, starting the distance measuring instrument 6, horizontally placing the standard rod 1 between the two vertical rolls 8, respectively placing two ends of the standard rod 1 on the steps of the two vertical rolls 8, placing the support rod 2 on the beam nose between the two vertical rolls 8, and enabling the support plane of the verticality calibrating device to coincide with the reference plane between the two vertical rolls 8 because the steps of the vertical rolls 8 and the beam nose of the vertical roll 8 are positioned on the reference plane of the vertical rolls. Then the standard rod 1 is connected with the arc top of the roll surface of the two vertical rolls 8 on the same straight line.
And S3, rotating the driving part 3, wherein the driving part 3 rotates the distance measuring instrument 6 through a belt until the limiting part 11 blocks the limiting stop rod 61, and the distance measuring direction of the distance measuring instrument 6 is parallel to the standard rod 1. The trigger lever 4 is lifted up to trigger the range finder 6 to measure data, and the range finder 6 sends the result to the mobile terminal, which can be a tablet computer, a notebook computer, etc., and is a mobile phone in this embodiment.
And S4, adjusting the extension of a pressure measuring cylinder on the rolling mill according to the measuring result of the distance meter 6, so as to adjust the vertical roll 8 until the verticality of the vertical roll 8 reaches a preset threshold value, namely the tolerance requirement of the verticality is met, and completing the calibration of one vertical roll 8.
And S5, reversely rotating the driving part 3, enabling the distance measuring instrument 6 to rotate 180 degrees through a belt by the driving part 3, and repeating the step S3 and the step S4 to finish the calibration of the verticality of the vertical roller 8 on the other side.
To sum up, the vertical roll straightness calibration device that hangs down that this embodiment provided is owing to including bracing piece 2 and distancer 6, and bracing piece 2 can stretch into distancer 6 between two vertical rolls 8, and distancer 6 can measure the interval between two vertical rolls 8, need not artifical entering, and is simple and convenient. The device has the advantages of simple and reasonable structure, easy manufacture, greatly improved operation efficiency, reduced labor intensity of operators, improved measurement precision, and effective prevention of safety accidents.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a vertical roll straightness calibration device that hangs down which characterized in that includes:
the support rod comprises a first end and a second end,
a standard bar disposed on the second end, a length direction of the standard bar intersecting a length direction of the supporting bar, an
The distance measuring instrument is arranged corresponding to the second end;
the measuring device comprises a standard rod, a support plane, a distance measuring instrument and a distance measuring instrument, wherein the plane where the length direction of the standard rod and the length direction of the support rod are located is the support plane, the plane where the length direction of the standard rod and the normal direction of the support plane are located is the measuring plane, the distance measuring direction of the distance measuring instrument is parallel to the support plane and is located in the measuring plane, and the distance between the distance measuring direction of the distance measuring instrument and the support plane is the measuring distance.
2. The vertical roll verticality calibrating device according to claim 1, wherein a rotating part is arranged on the second end, the distance measuring instrument is mounted on the rotating part, the rotating part is used for driving the distance measuring instrument to rotate around a rotating axis of the distance measuring instrument, and the rotating axis of the distance measuring instrument intersects with a distance measuring direction of the distance measuring instrument.
3. The vertical roll verticality calibrating device according to claim 2, wherein a driving part is arranged on the first end, the driving part is in transmission connection with the rotating part, and the driving part is used for driving the rotating part to rotate.
4. The vertical roll verticality calibrating device according to claim 3, wherein the driving portion is a driving pulley, the rotating portion is a rotating pulley, a transmission belt is arranged between the driving portion and the rotating portion, and the driving portion drives the rotating portion to rotate through the transmission belt.
5. The vertical roll verticality calibrating device according to claim 2, further comprising a limiting part for limiting the rotation angle of the distance measuring instrument.
6. The vertical roll verticality calibrating device according to claim 5, wherein the number of the limiting parts is two, and the two limiting parts are respectively arranged on two sides of the distance measuring instrument along the length direction of the standard rod.
7. The vertical roll verticality calibrating device according to claim 6, wherein the rotating part is provided with a limiting stop lever matched with the limiting part, the limiting stop lever rotates along with the distance measuring instrument, and the limiting part is matched with the limiting stop lever to limit the distance measuring instrument.
8. The vertical roll verticality calibrating device according to any one of claims 1 to 7, wherein the standard rod is perpendicular to the supporting rod.
9. The vertical roll verticality calibrating device according to any one of claims 1 to 7, wherein the distance measuring instrument is provided with a distance measuring switch, the supporting rod is further provided with a triggering rod for triggering the distance measuring switch, and the triggering rod comprises an operating end arranged close to the first end and a triggering end arranged corresponding to the distance measuring switch.
10. A method for calibrating the verticality of a vertical roll, which is characterized in that the vertical roll verticality calibrating device as claimed in any one of claims 1 to 9 is used, and comprises the following steps:
adjusting the distance between the two vertical rollers to enable the two vertical rollers to be the standard distance corresponding to the standard rod on the reference surface;
placing the standard rod between the two vertical rolls to enable the support plane of the vertical roll verticality calibration device to coincide with the reference plane;
and obtaining a measuring distance between the two vertical rolls through a distance meter, and adjusting the position between the two vertical rolls according to the measuring distance and the standard distance until the measuring distance meets a preset threshold value.
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CN202210865206.5A CN115193930B (en) | 2022-07-21 | 2022-07-21 | Vertical roll verticality calibration device and calibration method |
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CN202210865206.5A CN115193930B (en) | 2022-07-21 | 2022-07-21 | Vertical roll verticality calibration device and calibration method |
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CN115193930B CN115193930B (en) | 2024-08-23 |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04266423A (en) * | 1991-02-20 | 1992-09-22 | Kawasaki Steel Corp | Method and device for measuring roll gap of rolling mill |
JPH06106240A (en) * | 1992-08-12 | 1994-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Roll gap detecting device and roll end shape |
US5533371A (en) * | 1991-02-01 | 1996-07-09 | Lauener Engineering, Ltd. | Measurement device for roll gap control and process for its operation |
KR19980052451A (en) * | 1996-12-24 | 1998-09-25 | 김종진 | Rough rolling edge roll gap automatic measuring device |
KR20030052750A (en) * | 2001-12-21 | 2003-06-27 | 주식회사 포스코 | Apparatus for measurment of distance between edger roll |
TWM525235U (en) * | 2016-03-16 | 2016-07-11 | China Steel Corp | Edging roll laser range unit |
CN112453072A (en) * | 2020-10-31 | 2021-03-09 | 广西柳州钢铁集团有限公司 | Method for measuring vertical roll centering of roughing mill |
DE102021209714A1 (en) * | 2020-09-22 | 2022-03-24 | Sms Group Gmbh | Device and method for rolling metal strip |
KR102391062B1 (en) * | 2020-12-07 | 2022-04-28 | 주식회사 포스코 | Edger gap measuring device |
-
2022
- 2022-07-21 CN CN202210865206.5A patent/CN115193930B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5533371A (en) * | 1991-02-01 | 1996-07-09 | Lauener Engineering, Ltd. | Measurement device for roll gap control and process for its operation |
JPH04266423A (en) * | 1991-02-20 | 1992-09-22 | Kawasaki Steel Corp | Method and device for measuring roll gap of rolling mill |
JPH06106240A (en) * | 1992-08-12 | 1994-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Roll gap detecting device and roll end shape |
KR19980052451A (en) * | 1996-12-24 | 1998-09-25 | 김종진 | Rough rolling edge roll gap automatic measuring device |
KR20030052750A (en) * | 2001-12-21 | 2003-06-27 | 주식회사 포스코 | Apparatus for measurment of distance between edger roll |
TWM525235U (en) * | 2016-03-16 | 2016-07-11 | China Steel Corp | Edging roll laser range unit |
DE102021209714A1 (en) * | 2020-09-22 | 2022-03-24 | Sms Group Gmbh | Device and method for rolling metal strip |
CN112453072A (en) * | 2020-10-31 | 2021-03-09 | 广西柳州钢铁集团有限公司 | Method for measuring vertical roll centering of roughing mill |
KR102391062B1 (en) * | 2020-12-07 | 2022-04-28 | 주식회사 포스코 | Edger gap measuring device |
Non-Patent Citations (1)
Title |
---|
李思忠;杨作梁;: "板坯连铸机辊缝及开口度测量技术的应用", 科技情报开发与经济, no. 30, 25 October 2009 (2009-10-25) * |
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