CN105136040A - Method of measuring cut-length of continuous casting slab and device - Google Patents

Abstract

The invention provides a method of measuring the cut-length of a continuous casting slab and a device. The method comprises steps: cut-to-length specifications of a to-be-cut continuous casting slab are acquired; according to the cut-to-length specifications of the to-be-cut continuous casting slab, a laser ranging sensor corresponding to the to-be-cut continuous casting slab is determined from multiple laser ranging sensors arranged on a roller; and according to the determined laser ranging sensor and a preset upstream ranging sensor, the cut-length of the to-be-cut continuous casting slab is measured. According to continuous casting slabs with different cut-to-length specifications, the laser ranging sensor corresponding to the continuous casting slab can be determined, and the cut-length of the continuous casting slab is accurately measured via the determined laser ranging sensor. Besides, the laser ranging sensor is not influenced by cutting sparks in the case of cut-length measurement, and the measurement precision is high.

Description

A method and device for measuring the length of a continuous casting slab

technical field

The invention relates to the field of steelmaking and continuous casting, in particular to a method and device for measuring the length of a continuous casting slab.

Background technique

At present, continuous casting slabs have certain specification requirements. In order to make the produced continuous casting slabs meet the specification requirements, when producing continuous casting slabs, it is necessary to measure the length of the continuous casting slabs so that they can be cut according to the measured lengths. A continuous casting slab that meets the specification requirements is obtained.

At present, the continuous casting slab usually travels on the roller table at a casting speed of 0.5-3m/min under the action of the drawing and leveling machine. An infrared camera fixed-length measuring device is installed on the roller table. The infrared camera fixed-length measuring device shoots the roller The image of the continuous casting slab traveling on the road is measured by image processing to measure the length of the continuous casting slab. When the measured length reaches the preset length specification, it is cut by a cutting machine to obtain a continuous casting that meets the specification. billet.

However, the above-mentioned infrared camera fixed length measurement device has been difficult to meet the measurement requirements of the fixed length of continuous casting slabs of various specifications. Moreover, the accuracy of measuring the length to length by taking images is limited, especially when measuring short-sized continuous casting slabs, it is easily disturbed by cutting sparks, resulting in low accuracy of the measured length to length.

Contents of the invention

In view of this, the purpose of the embodiments of the present invention is to provide a method and device for measuring the length of continuous casting slabs, so as to realize the determination of laser distance measuring sensors corresponding to continuous casting slabs of different specifications, and through the continuous casting slab corresponding The laser ranging sensor accurately measures the length of the continuous casting slab. Moreover, the laser distance measuring sensor will not be affected by cutting sparks when measuring the length of the cut length, and the measurement accuracy is high.

In the first aspect, an embodiment of the present invention provides a method for measuring the length of a continuous casting slab, the method comprising:

Obtain the cut-to-length specifications of the continuous casting slab to be cut;

According to the length specification of the continuous casting slab to be cut, the laser distance measuring sensor corresponding to the continuous casting slab to be cut is determined from a plurality of laser distance measuring sensors arranged on the roller table;

Measuring the length of the continuous casting slab to be cut through the determined laser distance measuring sensor and the preset upstream distance measuring sensor.

In combination with the first aspect, the embodiment of the present invention provides the first possible implementation of the first aspect above, wherein, according to the cut-to-length specifications of the continuous casting slab to be cut, multiple laser measuring machines set on the roller table Determine the corresponding laser distance measuring sensor of the continuous casting slab to be cut in the distance sensor, including:

Obtain the preset boundary length, or set the boundary length according to the cut-to-length specification of the continuous casting slab to be cut; obtain the fixed distance corresponding to each laser ranging sensor set on the roller table, and the fixed distance is the laser ranging sensor The distance from the cut-to-length machine;

Comparing the cut-to-length specification of the continuous casting slab to be cut and the cut-off length, if the cut-to-length specification is smaller than the cut-off length, select the one with the smallest fixed distance from the laser ranging sensors whose fixed distance is greater than the cut-off length A laser distance measuring sensor, determining the selected laser distance measuring sensor as the laser distance measuring sensor corresponding to the continuous casting slab to be cut;

If the fixed-length specification is greater than or equal to the boundary length, the laser distance-finding sensor with the smallest fixed distance among the laser ranging sensors with a fixed distance greater than the fixed-length specification is determined as the laser corresponding to the continuous casting slab to be cut. distance sensor.

In combination with the first aspect, the embodiment of the present invention provides a second possible implementation of the above first aspect, wherein, according to the cut-to-length specification of the continuous casting slab to be cut, multiple laser measuring machines set on the roller table Determine the corresponding laser distance measuring sensor of the continuous casting slab to be cut in the distance sensor, including:

The current distance corresponding to the laser distance sensor is obtained by the laser distance sensor provided on the roller table, and the current distance is the distance between the current laser distance sensor and the cut-to-length cutting machine;

Select the laser ranging sensor with the smallest difference between the current distance and the scale specification from the plurality of laser ranging sensors provided on the roller table;

Determine the position on the roller table where the distance from the cut-to-length cutting machine is the sum of the cut-to-length specification and the preset length;

Control the selected laser ranging sensor to move to the position point, and determine the laser ranging sensor moved to the position point as the laser ranging sensor corresponding to the continuous casting slab to be cut.

In combination with the first aspect, the embodiment of the present invention provides a third possible implementation manner of the above first aspect, wherein, the laser ranging sensor and the preset upstream ranging sensor measured by the pass determine the Cut continuous casting slabs to length, including:

Measuring the distance between the laser distance measuring sensor and the billet head of the continuous casting billet to be cut through the determined laser distance measuring sensor;

Measuring the distance between the upstream ranging sensor and the starting point of the cut-to-length cutting machine through a preset upstream ranging sensor;

Acquiring the determined distance between the laser ranging sensor and the upstream ranging sensor;

By the following formula (1), the length to length of the continuous casting slab to be cut is obtained;

Li＝Dk-(LA+Lj)...(1)

Wherein, in the formula (1), Li is the length of the continuous casting slab to be cut, Dk is the determined distance between the laser ranging sensor and the upstream ranging sensor, and LA is the upstream The distance between the upstream ranging sensor measured by the ranging sensor and the starting point of the cut-to-length cutting machine, Lj is the determined distance between the laser ranging sensor measured by the laser ranging sensor and the continuous casting to be cut The distance between the billet heads of the billet.

In combination with the first aspect, the embodiment of the present invention provides a fourth possible implementation of the above-mentioned first aspect, wherein, after measuring the length of the continuous casting slab to be cut, it further includes:

According to the fixed-length length, control the fixed-length cutting machine to cut the continuous casting slab to be cut;

For each laser ranging sensor provided on the roller table, when it is detected that the continuous casting slab to be cut passes through a laser ranging sensor, the laser ranging sensor is controlled to switch from the measurement state to the avoidance state, and when it is detected that the to-be-cut continuous casting After the continuous casting slab passes through the laser distance measuring sensor, the laser distance measuring sensor is controlled to enter the measurement state.

In the second aspect, an embodiment of the present invention provides a device for measuring the length of a continuous casting slab, the device comprising:

The obtaining module is used to obtain the cut-to-length specifications of the continuous casting slab to be cut;

The determination module is used to determine the corresponding laser distance measuring sensor of the continuous casting billet to be cut from a plurality of laser distance measuring sensors arranged on the roller table according to the length specification of the billet to be cut;

The measuring module is used to measure the length of the continuous casting slab to be cut through the determined laser distance measuring sensor and the preset upstream distance measuring sensor.

With reference to the second aspect, the embodiment of the present invention provides the first possible implementation of the second aspect above, wherein the determination module includes:

The first obtaining unit is used to obtain the preset boundary length, or set the boundary length according to the cut-to-length specifications of the continuous casting slab to be cut; obtain the fixed distance corresponding to each laser ranging sensor set on the roller table, the The fixed distance is the distance between the laser ranging sensor and the cut-to-length cutting machine;

The first determining unit is used to compare the cut-to-length specification of the continuous casting slab to be cut with the boundary length, and if the cut-to-length specification is smaller than the boundary length, measure the distance from the laser with a fixed distance greater than the boundary length Selecting the laser ranging sensor with the smallest fixed distance among the sensors, and determining the selected laser ranging sensor as the laser ranging sensor corresponding to the continuous casting slab to be cut;

The second determination unit is used to determine the laser ranging sensor with the smallest fixed distance among the laser ranging sensors whose fixed distance is greater than the fixed specification when the fixed specification is greater than or equal to the boundary length, as the to-be-determined The laser distance measuring sensor corresponding to the continuous casting slab.

With reference to the second aspect, the embodiment of the present invention provides a second possible implementation of the above second aspect, wherein the determining module includes:

The second acquisition unit is used to obtain the current distance corresponding to the laser distance sensor through the laser distance sensor provided on the roller table, and the current distance is the distance between the current laser distance sensor and the cut-to-length cutting machine;

The selection unit is used to select the laser distance measuring sensor with the smallest difference between the current distance and the scale specification from the plurality of laser distance measuring sensors arranged on the roller table;

The third determining unit is used to determine the position point on the roller table whose distance from the cut-to-length cutting machine is the sum of the cut-to-length specification and the preset length;

The fourth determining unit is used to control the selected laser distance measuring sensor to move to the position point, and determine the laser distance measuring sensor moved to the position point as the laser measuring distance sensor corresponding to the continuous casting slab to be cut. distance sensor.

In combination with the second aspect, the embodiment of the present invention provides a third possible implementation of the second aspect above, wherein the measurement module includes:

The first measuring unit is used to measure the distance between the laser distance measuring sensor and the billet head of the continuous casting billet to be cut through the determined laser distance measuring sensor;

The second measuring unit is used to measure the distance between the upstream ranging sensor and the starting point of the cut-to-length cutting machine through a preset upstream ranging sensor;

a third acquiring unit, configured to acquire the determined distance between the laser ranging sensor and the upstream ranging sensor;

The fourth obtaining unit is used to obtain the cut-to-length length of the continuous casting slab to be cut through the following formula (1);

Li＝Dk-(LA+Lj)...(1)

Wherein, in the formula (1), Li is the length of the continuous casting slab to be cut, Dk is the determined distance between the laser ranging sensor and the upstream ranging sensor, and LA is the upstream The distance between the upstream ranging sensor measured by the ranging sensor and the starting point of the cut-to-length cutting machine, Lj is the determined distance between the laser ranging sensor measured by the laser ranging sensor and the continuous casting to be cut The distance between the billet heads of the billet.

With reference to the second aspect, the embodiment of the present invention provides a fourth possible implementation manner of the second aspect above, wherein the device further includes:

The cutting module is used to control the cut-to-length cutting machine to cut the continuous casting slab to be cut according to the cut-to-length length;

The control conversion module is used to control the conversion of the laser distance sensor from the measurement state to the avoidance state when it is detected that the continuous casting slab to be cut passes through a laser distance measurement sensor for each laser distance measurement sensor arranged on the roller table, When it is detected that the continuous casting slab to be cut has passed the laser distance measuring sensor, the laser distance measuring sensor is controlled to enter the measurement state.

In the method and device provided by the embodiment of the present invention, according to the length specification of the continuous casting billet to be cut, the laser distance measuring sensor corresponding to the continuous casting billet to be cut is determined from a plurality of laser ranging sensors arranged on the roller table; The determined laser ranging sensor and the preset upstream ranging sensor measure the length of the continuous casting slab to be cut. For the continuous casting slabs of different specifications, the corresponding laser distance measuring sensor for the continuous casting slab has been determined, and the determined length of the continuous casting slab can be accurately measured through the determined laser distance measuring sensor. Moreover, the laser distance measuring sensor is not affected by cutting sparks when measuring the length of a fixed length, and the measurement accuracy is high.

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1A shows a flow chart of a method for measuring the length of a continuous casting slab provided by Embodiment 1 of the present invention;

Fig. 1B shows a schematic diagram of a continuous casting slab production line provided by Embodiment 1 of the present invention;

Fig. 1C shows a schematic diagram of another continuous casting slab production line provided by Embodiment 1 of the present invention;

Fig. 2 shows a schematic structural diagram of a device for measuring the length of a continuous casting slab provided by Embodiment 2 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

Considering that the infrared camera cut-to-length measurement device in the related art has been difficult to meet the measurement requirements of the cut-to-length of continuous casting slabs of various specifications. Moreover, the accuracy of measuring the length to length by taking images is limited, and it is easily disturbed by cutting sparks, resulting in low accuracy of the measured length to length. Based on this, an embodiment of the present invention provides a method and device for measuring the length of a continuous casting slab. The following is described by way of examples.

Example 1

Referring to Fig. 1A, an embodiment of the present invention provides a method for measuring the length of a continuous casting slab. The method specifically includes the following steps:

Step 101: Obtain the cut-to-length specification of the continuous casting slab to be cut;

The execution subject of the embodiment of the present invention may be a control terminal such as a sizing industrial computer on the continuous casting slab production line. In the embodiment of the present invention, on the production line used to produce continuous casting slabs, an upstream ranging sensor is installed upstream of the cut-to-length cutting machine, and downstream of the cutting-to-length machine, that is, on the roller table for conveying continuous casting slabs Multiple laser distance measuring sensors are installed, and the upstream distance measuring sensors, the multiple laser distance measuring sensors on the cut-to-length cutting machine and the roller table are all connected with the control terminal signal, and the production line is controlled by the control terminal to produce continuous casting billets of different specifications. In the embodiment of the present invention, two laser ranging sensors are preferably installed on the roller table. The schematic diagram of the production line of the above-mentioned continuous casting slab is shown in FIG. 1B . In FIG. 1B , only two laser ranging sensors are drawn on the roller table: the first laser ranging sensor and the second laser ranging sensor. In Figure 1B, the upstream ranging sensor, the fixed-length cutting machine, the first laser ranging sensor and the second laser ranging sensor are all connected to the fixed-length industrial computer, and the production line is controlled by the fixed-length industrial computer to produce different cut-to-length Specifications of continuous casting slabs.

The length specification of the above-mentioned continuous casting slab to be cut is the length of the continuous casting slab to be cut to be produced. In the embodiment of the present invention, the length specification of the continuous casting slab to be cut is set in the control terminal in advance, and for a production line, the sizing of continuous casting slabs of various specifications can be preset on the control terminal corresponding to the production line. Ruler specifications. When producing continuous casting slabs, the control terminal controls the production sequence of continuous casting slabs of different specifications, determines the current continuous casting slabs to be produced as the continuous casting slabs to be cut, and obtains the stored length of the continuous casting slabs to be cut from the local Specification.

Step 102: Determine the laser distance measuring sensor corresponding to the continuous casting billet to be cut from the plurality of laser distance measuring sensors arranged on the roller table according to the length specification of the billet to be cut;

Multiple laser ranging sensors are installed on the roller table. Since the distance between each laser ranging sensor and the cut-to-length cutting machine is different, the measurement of each laser ranging sensor The accuracy is different, and it is necessary to select the laser distance measuring sensor with the highest measurement accuracy for the cut-to-length specification of the continuous casting slab to be cut from the multiple laser distance measuring sensors.

In the embodiment of the present invention, the above-mentioned multiple laser distance measuring sensors can be fixedly installed on the roller table through the installation device, and the fixedly installed laser distance measuring sensors cannot move left and right. The distance between each laser ranging sensor and the cut-to-length cutting machine can be pre-stored in the control terminal.

Since continuous casting slabs of different specifications can be produced, when determining the laser distance measuring sensor corresponding to the continuous casting slab to be cut, the boundary length can be preset in the control terminal. The casting slabs are divided into two categories, one is the continuous casting slab whose cut-to-length specification is less than the cut-off length, and the other is the continuous-cast slab whose cut-to-length specification is greater than or equal to the cut-off length. Wherein, in the embodiment of the present invention, the preset boundary length can be the distance between a laser distance measuring sensor and the cut-to-length cutting machine, and the laser distance measuring sensor is not the farthest laser distance measuring sensor from the cut-to-length cutting machine .

In addition, in the embodiment of the present invention, the boundary length can also be set according to the cut-to-length specification of the continuous casting slab to be cut. The boundary length can be set as the sum of the length specification of the continuous casting slab to be cut and the preset value, and in order to ensure that the set boundary length is less than the distance between the farthest laser ranging sensor and the length cutting machine, you can Set a number of preset values in advance. When setting the boundary length according to the cut-to-length specifications of the continuous casting slab to be cut, first determine the preset value that can make the cut-off length less than the distance between the farthest laser ranging sensor and the cut-to-length cutting machine. Set a value, then randomly select a preset value from the determined preset values, and set the sum of the selected preset value and the cut-to-length specification of the continuous casting slab to be cut as the boundary length.

After setting the boundary length in the above way, the laser ranging sensor corresponding to the continuous casting slab to be cut can be determined through the following operations, including:

Obtain the preset boundary length, or set the boundary length according to the cut-to-length specifications of the continuous casting slab to be cut; obtain the distance between each laser ranging sensor set on the roller table and the cut-to-length cutting machine, and obtain each The distance corresponding to each laser ranging sensor is determined as the corresponding fixed distance of each laser ranging sensor; compare the cut-to-length specification and the boundary length of the continuous casting slab to be cut, if the fixed-length specification is less than the boundary length, then from the fixed distance greater than Select the laser ranging sensor with the smallest fixed distance among the laser ranging sensors of the boundary length, and determine the selected laser ranging sensor as the laser ranging sensor corresponding to the continuous casting slab to be cut; if the size specification is greater than or equal to the boundary length, Then, the laser ranging sensor with the smallest fixed distance among the laser ranging sensors whose fixed distance is larger than the fixed-length specification is determined as the corresponding laser ranging sensor of the continuous casting slab to be cut.

In addition, in the embodiment of the present invention, the above-mentioned multiple laser distance measuring sensors can also be installed on the transmission device, so that the laser distance measuring sensors on the roller table can move left and right along the roller table. Based on the laser ranging sensor that can move left and right, the above-mentioned operation of determining the laser ranging sensor corresponding to the continuous casting slab to be cut can also be realized in the following ways, specifically including:

Obtain the current distance corresponding to the laser ranging sensor through the laser ranging sensor set on the roller table, which is the distance between the current laser ranging sensor and the fixed-length cutting machine; from the multiple laser ranging sensors set on the roller table Select the laser ranging sensor with the smallest difference between the current distance and the cut-to-length specification; determine the position point on the roller table where the distance from the cut-to-length cutting machine is the sum of the cut-to-length specification and the preset length; control the selected The laser ranging sensor is moved to the position point, and the laser ranging sensor moved to the position point is determined as the laser ranging sensor corresponding to the continuous casting slab to be cut.

The above determined distance between the laser distance measuring sensor and the cut-to-length cutting machine is greater than the cut-to-length specification of the continuous casting billet to be cut, and the laser distance measuring sensor is used to measure the billet head of the continuous casting billet to be cut to the laser distance measuring sensor the distance between. After the laser ranging sensor corresponding to the continuous casting slab to be cut is determined through the operation of this step, the length of the continuous casting slab to be cut is measured through the operation of the following step 103 .

Step 103: Measure the length of the continuous casting slab to be cut through the determined laser ranging sensor and the preset upstream ranging sensor.

In the embodiment of the present invention, the distance between each laser ranging sensor on the roller table and the upstream ranging sensor is also pre-stored in the control terminal. The above determined distance between the laser ranging sensor and the upstream ranging sensor can be divided into the following three parts: the distance between the upstream ranging sensor and the starting point of the cut-to-length cutting machine, the length of the continuous casting slab to be cut and the length to be cut. Cut the distance between the billet head of the continuous casting billet and the determined laser distance measuring sensor. Therefore, as long as the distance between the determined laser ranging sensor and the upstream ranging sensor, the distance between the upstream ranging sensor and the starting point of the fixed-length cutting machine, and the billet head of the continuous casting billet to be cut to the determined laser ranging sensor The distance between them can calculate the length of the continuous casting slab to be cut.

The above-mentioned operation of measuring the fixed length of the continuous casting slab to be cut specifically includes:

When the continuous casting slab to be cut travels on the roller table under the action of the tension leveler, the distance between the billet head of the continuous casting slab to be cut and the laser distance measuring sensor is measured by the above-mentioned determined laser distance measuring sensor; The preset upstream ranging sensor measures the distance between the upstream ranging sensor and the starting point of the cut-to-length cutting machine; obtains the determined distance between the laser ranging sensor and the upstream ranging sensor; through the following formula (1), obtain The length of the continuous casting slab to be cut.

Li＝Dk-(LA+Lj)...(1)

Among them, in the formula (1), Li is the fixed length of the continuous casting slab to be cut, Dk is the distance between the determined laser ranging sensor and the upstream ranging sensor, and LA is the upstream ranging measured by the upstream ranging sensor The distance between the sensor and the starting point of the cut-to-length cutting machine, Lj is the distance between the laser distance measuring sensor measured by the determined laser distance measuring sensor and the billet head of the continuous casting billet to be cut.

In the embodiment of the present invention, after measuring the length of the continuous casting slab to be cut through the operations of the above steps 101-103, the cutting machine to be cut can be controlled to cut the continuous casting slab to be cut according to the measured length to length. Since the continuous casting slab to be cut is continuously moved forward on the roller table through the action of the tension leveler, it is necessary to measure the length of the continuous casting slab to be cut in real time through a certain laser distance measuring sensor in the embodiment of the present invention, and The measured length to length is compared with the cut-to-length specifications of the continuous casting slab to be cut. When the measured length is equal to the cut-to-length specification of the continuous casting slab to be cut, the control terminal sends a cutting command to the cut-to-length cutting machine. When the ruler cutting machine receives the cutting command, it executes the cutting operation, so as to obtain the continuous casting slab to be cut whose length is the required length.

In addition, since the laser distance measuring sensor is located on the roller table, the cut continuous casting slab will advance along the roller table, so the laser distance measuring sensor on the roller table will hinder the progress of the continuous casting slab to be cut. Therefore, in the embodiment of the present invention, the measurement state and avoidance state of the laser ranging sensor are set. When the laser distance measuring sensor is in the measurement state, the laser distance measuring sensor is located on the roller table, and when it is determined that the laser distance measuring sensor is the laser distance measuring sensor corresponding to the continuous casting slab to be cut, the laser distance measuring sensor is measured in real time. The distance between the billet heads of the continuous casting billet. When the laser ranging sensor is in the avoidance state, the movable arm on the control installation device drives the laser ranging sensor to lift above the roller table or move to both sides of the roller table.

In the embodiment of the present invention, for each laser distance measuring sensor arranged on the roller table, when it is detected that the cut continuous casting slab passes the laser distance measuring sensor, the laser distance measuring sensor is controlled to switch from the measurement state to the avoidance state , when it is detected that the continuous casting slab to be cut has passed the laser distance sensor, the laser distance sensor is then controlled to enter the measurement state.

In addition, the method for measuring the upper degree of continuous casting slabs provided by the embodiments of the present invention can be used for mass production of continuous casting slabs. The control terminal in the embodiment of the present invention can control multiple continuous casting slab production lines. In order to facilitate understanding of the solutions of the embodiments of the present invention, the following examples are used for illustration. For example, as shown in FIG. 1C , the schematic diagram of the continuous casting slab production line includes a 4-strand continuous casting slab production line, and the upstream ranging sensors on the 4-strand production line are A1, A2, A3 and A4 respectively. The length specifications of the continuous casting slabs to be cut include five types: 3.3m, 6.35m, 12.7m, 12.96m and 13.97m. Divide the above five fixed-length specifications into two groups, and take 7m as the dividing length, and set up 4 laser ranging sensors in row B and row C respectively on the roller tables 7m and 14.5m away from the starting point of the fixed-length cutting machine for each flow, That is to say, two laser distance measuring sensors are installed on the roller table of each production line, the laser distance measuring sensors B1 and C1 are installed on the first strand of continuous casting billet line, and the laser distance measuring sensors are installed on the second stream of continuous casting billet line For the sensors B2 and C2, the laser distance measuring sensors B3 and C3 are arranged on the line of the third continuous casting slab, and the laser distance measuring sensors B4 and C4 are arranged on the line of the fourth continuous casting slab. When the cut-to-length specification of the continuous casting billet to be cut is less than the boundary length, that is, when the cut-to-length specification of the continuous casting billet to be cut is 3.3m or 6.35m, it is determined that the laser ranging sensor in column B is the laser measuring sensor corresponding to the continuous casting billet to be cut. distance sensor. When the cut-to-length specification of the continuous casting slab to be cut is greater than or equal to the boundary length, that is, when the cut-to-length specification of the continuous casting slab to be cut is 12.7m, 12.96m or 13.97m, it is determined that the C-column laser distance measuring sensor is the cut-to-cut continuous casting The laser ranging sensor corresponding to the billet. The laser distance measuring sensors in columns B and C are all arranged downstream of the billet roller table, and the laser beams emitted by them are parallel to the continuous casting billet to be cut, and are used to measure the distance between it and the billet head of the billet to be cut. And calculate the cut-to-length length of the continuous casting slab to be cut by the formula Li=Dk-(LA+Lj).

In addition, in the embodiment of the present invention, the laser beam emitted by the laser ranging sensor can also be obliquely irradiated to the billet head of the continuous casting billet to be cut at a certain angle. In this case, the horizontal distance from the laser ranging sensor to the billet head of the continuous casting billet to be cut can be calculated by trigonometry.

The method for measuring the length of the continuous casting slab provided by the embodiment of the present invention is applicable to the measurement of the length of the continuous casting slab with multiple specifications, and improves the measurement accuracy, meets the process requirements, and finally improves the pass rate of the continuous casting slab product, And can reduce the production cost.

In the method provided in the embodiment of the present invention, according to the length specification of the continuous casting billet to be cut, the laser distance measuring sensor corresponding to the continuous casting billet to be cut is determined from a plurality of laser ranging sensors arranged on the roller table; The laser distance measuring sensor and the preset upstream distance measuring sensor measure the length of the continuous casting slab to be cut. For the continuous casting slabs of different specifications, the corresponding laser distance measuring sensor for the continuous casting slab has been determined, and the determined length of the continuous casting slab can be accurately measured through the determined laser distance measuring sensor. Moreover, the laser distance measuring sensor is not affected by cutting sparks when measuring the length of a fixed length, and the measurement accuracy is high.

Example 2

Referring to FIG. 2 , an embodiment of the present invention provides a device for measuring the length of a continuous casting slab. The device includes: an acquisition module 201 , a determination module 202 and a measurement module 203 .

The acquisition module 201 is used to acquire the cut-to-length specifications of the continuous casting slab to be cut;

The determination module 202 is used to determine the corresponding laser distance measuring sensor of the continuous casting billet to be cut from a plurality of laser ranging sensors arranged on the roller table according to the length specification of the billet to be cut;

The above determination module 202 can determine the laser distance sensor corresponding to the continuous casting slab to be cut through the following functions of the first acquisition unit, the first determination unit and the second determination unit, specifically including:

The first acquisition unit obtains the preset boundary length, or sets the boundary length according to the cut-to-length specification of the continuous casting slab to be cut; obtains the fixed distance corresponding to each laser ranging sensor set on the roller table, and the fixed distance is the laser ranging sensor The distance from the cut-to-length cutting machine; the first determination unit compares the cut-to-length specification and the boundary length of the continuous casting slab to be cut, and if the cut-to-length specification is smaller than the boundary length, select from the laser ranging sensors whose fixed distance is greater than the boundary length The laser ranging sensor with the smallest fixed distance determines the selected laser ranging sensor as the laser ranging sensor corresponding to the continuous casting slab to be cut; The laser distance measuring sensor with the smallest fixed distance among the laser distance measuring sensors of ruler specification is determined as the laser distance measuring sensor corresponding to the continuous casting slab to be cut.

In addition, in the embodiment of the present invention, the determination module 202 can also determine the length of the continuous casting slab to be cut through the following functions of the second acquisition unit, the selection unit, the third determination unit and the fourth determination unit, specifically including :

The second acquiring unit obtains the current distance corresponding to the laser ranging sensor through the laser ranging sensor provided on the roller table, and the current distance is the distance between the current laser ranging sensor and the fixed-length cutting machine; Select the laser ranging sensor with the smallest difference between the current distance and the fixed-length specification among the laser ranging sensors; the third determination unit determines that the distance between the roller table and the fixed-length cutting machine is the sum of the fixed-length specification and the preset length the position point; the fourth determining unit controls the selected laser distance measuring sensor to move to the position point, and determines the laser distance measuring sensor moved to the position point as the laser distance measuring sensor corresponding to the continuous casting slab to be cut.

The measurement module 203 is used to measure the length of the continuous casting slab to be cut through the determined laser ranging sensor and the preset upstream ranging sensor.

The measurement module 203 can measure the length of the continuous casting slab to be cut through the following functions of the first measurement unit, the second measurement unit, the third acquisition unit and the fourth acquisition unit, specifically including:

The first measuring unit measures the distance between the laser ranging sensor and the slab head of the continuous casting slab to be cut through the determined laser ranging sensor; the second measuring unit measures the distance between the upstream ranging sensor and the slab head through the preset upstream ranging sensor The distance between the starting points of the cut-to-length cutting machine; the third acquisition unit acquires the distance between the determined laser ranging sensor and the upstream ranging sensor; the fourth acquisition unit obtains the distance between the continuous casting slab to be cut by the following formula (1). fixed length;

Li＝Dk-(LA+Lj)...(1)

Among them, in the formula (1), Li is the fixed length of the continuous casting slab to be cut, Dk is the distance between the determined laser ranging sensor and the upstream ranging sensor, and LA is the upstream ranging measured by the upstream ranging sensor The distance between the sensor and the starting point of the cut-to-length cutting machine, Lj is the distance between the laser distance measuring sensor measured by the determined laser distance measuring sensor and the billet head of the continuous casting billet to be cut.

After the length of the continuous casting slab to be cut is measured through the operations of the acquisition module 201 , the determination module 202 and the measurement module 203 , the continuous casting slab to be cut can also be cut by the following cutting module. The above-mentioned cutting module controls the cut-to-length cutting machine to cut the continuous casting slab to be cut according to the cut length.

Since the continuous casting slab to be cut is continuously moved forward on the roller table through the action of the tension leveler, it is necessary to measure the fixed length of the continuous casting slab to be cut in real time through the measurement module 203 in the embodiment of the present invention, and the measured fixed length The length of the ruler is compared with the fixed-length specification of the continuous casting slab to be cut. When the measured length is equal to the fixed-length specification of the continuous casting slab to be cut, the device for measuring the fixed length of the continuous casting slab sends a cutting command. A cut-to-length cutting machine, the cut-to-length cutting machine performs a cutting operation when receiving the cutting command, thereby obtaining a continuous casting slab to be cut with a cut-to-length length of a required cut-to-length specification.

In addition, since the laser distance measuring sensor is located on the roller table, the cut continuous casting slab will advance along the roller table, so the laser distance measuring sensor on the roller table will hinder the progress of the continuous casting slab to be cut. Therefore, in the embodiment of the present invention, the measurement state and avoidance state of the laser ranging sensor are set. When the laser distance measuring sensor is in the measurement state, the laser distance measuring sensor is located on the roller table, and when it is determined that the laser distance measuring sensor is the laser distance measuring sensor corresponding to the continuous casting slab to be cut, the laser distance measuring sensor is measured in real time. The distance between the billet heads of the continuous casting billet. When the laser ranging sensor is in the avoidance state, the movable arm on the control installation device drives the laser ranging sensor to lift above the roller table or move to both sides of the roller table.

Therefore, the embodiment of the present invention also provides a control conversion module. The control conversion module is used for each laser ranging sensor provided on the roller table, when it is detected that the continuous casting slab to be cut passes a laser ranging sensor, it controls the laser ranging sensor to switch from the measuring state to the avoiding state, and when it detects After the continuous casting slab to be cut passes the laser ranging sensor, the laser ranging sensor is controlled to enter the measurement state.

In the device provided in the embodiment of the present invention, according to the length specification of the continuous casting billet to be cut, the laser distance measuring sensor corresponding to the continuous casting billet to be cut is determined from a plurality of laser ranging sensors arranged on the roller table; The laser distance measuring sensor and the preset upstream distance measuring sensor measure the length of the continuous casting slab to be cut. For the continuous casting slabs of different specifications, the corresponding laser distance measuring sensor for the continuous casting slab has been determined, and the determined length of the continuous casting slab can be accurately measured through the determined laser distance measuring sensor. Moreover, the laser distance measuring sensor is not affected by cutting sparks when measuring the length of a fixed length, and the measurement accuracy is high.

The device for measuring the length of the continuous casting slab provided by the embodiment of the present invention may be specific hardware on the equipment or software or firmware installed on the equipment. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the devices, modules and units described above can refer to the corresponding process in the above method embodiment.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disk or optical disk and other media that can store program codes.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. A method for measuring continuous casting slab length to length, characterized in that the method comprises: Obtain the cut-to-length specifications of the continuous casting slab to be cut; According to the length specification of the continuous casting slab to be cut, the laser distance measuring sensor corresponding to the continuous casting slab to be cut is determined from a plurality of laser distance measuring sensors arranged on the roller table; Measuring the length of the continuous casting slab to be cut through the determined laser distance measuring sensor and the preset upstream distance measuring sensor. 2. The method according to claim 1, characterized in that, according to the cut-to-length specifications of the continuous casting slab to be cut, the continuous casting to be cut is determined from a plurality of laser ranging sensors arranged on the roller table. The laser ranging sensor corresponding to the billet, including: Obtain the preset boundary length, or set the boundary length according to the cut-to-length specification of the continuous casting slab to be cut; obtain the fixed distance corresponding to each laser ranging sensor set on the roller table, and the fixed distance is the laser ranging sensor The distance from the cut-to-length machine; Comparing the cut-to-length specification of the continuous casting slab to be cut and the cut-off length, if the cut-to-length specification is smaller than the cut-off length, select the one with the smallest fixed distance from the laser ranging sensors whose fixed distance is greater than the cut-off length A laser distance measuring sensor, determining the selected laser distance measuring sensor as the laser distance measuring sensor corresponding to the continuous casting slab to be cut; If the fixed-length specification is greater than or equal to the boundary length, the laser distance-finding sensor with the smallest fixed distance among the laser ranging sensors with a fixed distance greater than the fixed-length specification is determined as the laser corresponding to the continuous casting slab to be cut. distance sensor. 3. The method according to claim 1, characterized in that, according to the length specifications of the continuous casting slab to be cut, the continuous casting to be cut is determined from a plurality of laser ranging sensors arranged on the roller table. The laser ranging sensor corresponding to the billet, including: The current distance corresponding to the laser distance sensor is obtained by the laser distance sensor provided on the roller table, and the current distance is the distance between the current laser distance sensor and the cut-to-length cutting machine; Select the laser ranging sensor with the smallest difference between the current distance and the scale specification from the plurality of laser ranging sensors provided on the roller table; Determine the position on the roller table where the distance from the cut-to-length cutting machine is the sum of the cut-to-length specification and the preset length; Control the selected laser ranging sensor to move to the position point, and determine the laser ranging sensor moved to the position point as the laser ranging sensor corresponding to the continuous casting slab to be cut. 4. The method according to claim 1, characterized in that, measuring the length to length of the continuous casting slab to be cut through the determined laser ranging sensor and the preset upstream ranging sensor comprises: Measuring the distance between the laser distance measuring sensor and the billet head of the continuous casting billet to be cut through the determined laser distance measuring sensor; Measuring the distance between the upstream ranging sensor and the starting point of the cut-to-length cutting machine through a preset upstream ranging sensor; Acquiring the determined distance between the laser ranging sensor and the upstream ranging sensor; By the following formula (1), the length to length of the continuous casting slab to be cut is obtained; Li＝Dk-(LA+Lj)...(1) Wherein, in the formula (1), Li is the length of the continuous casting slab to be cut, Dk is the determined distance between the laser ranging sensor and the upstream ranging sensor, and LA is the upstream The distance between the upstream ranging sensor measured by the ranging sensor and the starting point of the cut-to-length cutting machine, Lj is the determined distance between the laser ranging sensor measured by the laser ranging sensor and the continuous casting to be cut The distance between the heads of billets. 5. The method according to claim 1, characterized in that, after measuring the length to length of the continuous casting slab to be cut, further comprising: According to the fixed-length length, control the fixed-length cutting machine to cut the continuous casting slab to be cut; For each laser ranging sensor provided on the roller table, when it is detected that the continuous casting slab to be cut passes through a laser ranging sensor, the laser ranging sensor is controlled to switch from the measurement state to the avoidance state, and when it is detected that the to-be-cut continuous casting After the continuous casting slab passes through the laser distance measuring sensor, the laser distance measuring sensor is controlled to enter the measurement state. 6. A device for measuring the length of a continuous casting slab, characterized in that the device comprises: The obtaining module is used to obtain the cut-to-length specifications of the continuous casting slab to be cut; The determination module is used to determine the corresponding laser distance measuring sensor of the continuous casting billet to be cut from a plurality of laser distance measuring sensors arranged on the roller table according to the sizing specification of the billet to be cut; The measuring module is used to measure the length of the continuous casting slab to be cut through the determined laser distance measuring sensor and the preset upstream distance measuring sensor. 7. The device according to claim 6, wherein the determining module comprises: The first obtaining unit is used to obtain the preset boundary length, or set the boundary length according to the cut-to-length specifications of the continuous casting slab to be cut; obtain the fixed distance corresponding to each laser ranging sensor set on the roller table, the The fixed distance is the distance between the laser ranging sensor and the cut-to-length cutting machine; The first determining unit is used to compare the cut-to-length specification of the continuous casting slab to be cut with the boundary length, and if the cut-to-length specification is smaller than the boundary length, measure the distance from the laser with a fixed distance greater than the boundary length Selecting the laser ranging sensor with the smallest fixed distance among the sensors, and determining the selected laser ranging sensor as the laser ranging sensor corresponding to the continuous casting slab to be cut; The second determination unit is used to determine the laser ranging sensor with the smallest fixed distance among the laser ranging sensors whose fixed distance is greater than the fixed specification when the fixed specification is greater than or equal to the boundary length, as the to-be-determined The laser distance measuring sensor corresponding to the continuous casting slab. 8. The device according to claim 6, wherein the determining module comprises: The second acquisition unit is used to obtain the current distance corresponding to the laser distance sensor through the laser distance sensor provided on the roller table, and the current distance is the distance between the current laser distance sensor and the cut-to-length cutting machine; The selection unit is used to select the laser distance measuring sensor with the smallest difference between the current distance and the scale specification from the plurality of laser distance measuring sensors arranged on the roller table; The third determining unit is used to determine the position point on the roller table whose distance from the cut-to-length cutting machine is the sum of the cut-to-length specification and the preset length; The fourth determining unit is used to control the selected laser distance measuring sensor to move to the position point, and determine the laser distance measuring sensor moved to the position point as the laser measuring distance sensor corresponding to the continuous casting slab to be cut. distance sensor. 9. The device according to claim 6, wherein the measuring module comprises: The first measuring unit is used to measure the distance between the laser distance measuring sensor and the billet head of the continuous casting billet to be cut through the determined laser distance measuring sensor; The second measuring unit is used to measure the distance between the upstream ranging sensor and the starting point of the cut-to-length cutting machine through a preset upstream ranging sensor; a third acquiring unit, configured to acquire the determined distance between the laser ranging sensor and the upstream ranging sensor; The fourth obtaining unit is used to obtain the cut-to-length length of the continuous casting slab to be cut through the following formula (1); Li＝Dk-(LA+Lj)...(1) Wherein, in the formula (1), Li is the length of the continuous casting slab to be cut, Dk is the determined distance between the laser ranging sensor and the upstream ranging sensor, and LA is the upstream The distance between the upstream ranging sensor measured by the ranging sensor and the starting point of the cut-to-length cutting machine, Lj is the determined distance between the laser ranging sensor measured by the laser ranging sensor and the continuous casting to be cut The distance between the heads of billets. 10. The device according to claim 6, further comprising: The cutting module is used to control the cut-to-length cutting machine to cut the continuous casting slab to be cut according to the cut-to-length length; The control conversion module is used to control the conversion of the laser distance sensor from the measurement state to the avoidance state when it is detected that the continuous casting slab to be cut passes through a laser distance measurement sensor for each laser distance measurement sensor arranged on the roller table, When it is detected that the continuous casting slab to be cut has passed the laser distance measuring sensor, the laser distance measuring sensor is controlled to enter the measurement state.