A zero position calibration method for a steel tapping machine

Abstract

The present invention provides a zero position calibration method for a steel tapping machine, which includes obtaining the slab width and the slab spacing between adjacent slabs in the heating furnace, and marking the position of the roller table center line; calculating a safety distance according to the slab width and the slab spacing, where the safety distance is used to safely lift the slab; adjusting the steel tapping arm to extend and making the length of its end exceeding the position of the roller table center line be the safety distance, and calibrating the position of the steel tapping arm at this time as the zero position. Compared with the prior art, this calibration method can greatly improve the calibration accuracy of the zero position of the steel tapping machine, shorten the calibration time, and at the same time avoid accidents such as steel dropping and slab position deviation from the roller table center line during the steel tapping process, improving the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of steel tapping machines, and particularly to a zero position calibration method for a steel tapping machine. Background Art

[0002] The steel tapping machine is located directly in front of the discharging side of the heating furnace. It is a device used to lift the slab heated in the heating furnace and place it steadily on the discharging roller table, and can perform single-row discharging or double-row discharging according to slabs of different lengths. For the slab-supporting type steel tapping machine, the steel tapping arm extends into the heating furnace to drag out the slab in the furnace. There are pads for placing the slab on the steel tapping arm, and the width of the pad may be greater than the width of the slab. Therefore, when dragging out the slab, it is necessary to ensure that the pad does not support the second slab behind, and can safely support the first slab. So, the center line of the pad of the steel tapping machine is adjusted to facilitate the normal lifting of all slabs out of the heating furnace.

[0003] Currently, for determining the position of the slab on the steel tapping arm, mainly through zero position calibration. The existing zero position calibration method for the heating furnace steel tapping machine is rough. It is to retract the steel tapping arm to the mechanical rear position (that is, the mechanical arm is retracted into the protective cover), and then take this position as the zero position of the steel tapping machine. Such calibration is likely to damage the gear of the steel tapping arm, and the accuracy is not high, easily causing accidents such as steel dropping and the slab position deviating from the center line of the roller table during the steel tapping process, posing a greater safety hazard. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a zero position calibration method for a steel tapping machine, which is used to solve the problem of low accuracy of zero position calibration and potential safety hazards when the steel tapping machine is in use in the prior art.

[0005] To achieve the above object and other related objects, the present invention provides a zero position calibration method for a steel tapping machine, including:

[0006] Obtain the width of the slab and the slab spacing between adjacent slabs in the heating furnace, and mark the position of the roller table center line;

[0007] Calculate a safety distance according to the slab width and the slab spacing, and the safety distance is used to safely lift the slab;

[0008] Adjust the steel tapping arm to extend so that the length of its end exceeding the position of the roller table center line is the safety distance, and calibrate the position of the steel tapping arm at this time as the zero position.

[0009] Optionally, after adjusting the steel tapping arm to extend so that the length of its end exceeding the position of the roller table center line is the safety distance and calibrating the position of the steel tapping arm at this time as the zero position, it includes:

[0010] When the tapping arm is at the zero position, a calibrated distance is extended from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibrated distance is 0 - 4 m, and the end point of the calibrated distance is marked as the calibration position.

[0011] Optionally, when the tapping arm is at the zero position, a calibrated distance is extended from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibrated distance is 0 - 4 m, and the end point of the calibrated distance is marked as the calibration position, including:

[0012] The calibrated distance is 0.5 - 2 m, and the calibration position is marked on the tapping arm.

[0013] Optionally, when the tapping arm is at the zero position, a calibrated distance is extended from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibrated distance is 0 - 4 m, and the end point of the calibrated distance is marked as the calibration position, including:

[0014] The calibrated distance is 1 m, and the calibration position is marked on the tapping arm.

[0015] Optionally, when the tapping arm is at the zero position, a calibrated distance is extended from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibrated distance is 0 - 4 m, and the end point of the calibrated distance is marked as the calibration position, including:

[0016] A calibration block is provided at the calibration position, and the calibration block is fixed on the tapping arm.

[0017] Optionally, when the tapping arm is at the zero position, a calibrated distance is extended from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibrated distance is 0 - 4 m, and the end point of the calibrated distance is marked as the calibration position, including:

[0018] A calibration block is provided at the calibration position, and the calibration block is fixed on the tapping arm by welding.

[0019] Optionally, after adjusting the length of the tapping arm to extend and making its end exceed the center line position of the roller table as the safety distance, and calibrating the current position of the tapping arm as the zero position, including:

[0020] When verifying the zero position of the tapping arm, measure the straight-line length between the calibration position and the front end of the protective cover. If the straight-line length is the calibrated distance, then the tapping arm is at the zero position.

[0021] Optionally, calculating the safety distance according to the slab width and the slab spacing, where the safety distance is used to safely lift the slab, including:

[0022] When the length that the front end of the tapping arm extends into the heating furnace is the safety distance, it is the steel-taking position. An encoder is provided on the tapping machine, and the encoder measures the length that the tapping arm extends into the heating furnace.

[0023] Optionally, the safety distance is calculated according to the slab width and the slab spacing. The safety distance is used to safely lift the slab, including:

[0024] When the tapping arm is at the steel-taking position, the safety distance is the distance between the end of the tapping arm and the center line on the slab width.

[0025] Optionally, when the tapping arm is at the steel-taking position, the safety distance is the distance between the end of the tapping arm and the center line on the slab width, including:

[0026] The safety distance is C, the slab width is w, the slab spacing is B, and the calculation method of the safety distance is w / 4 < C < w / 2 + B.

[0027] In the solution implemented by the above zero-position calibration method of a tapping machine, by calculating the safety distance using the values of the slab width and the adjacent slab spacing, the safe lifting of the slab is achieved, and the zero position of the tapping arm is marked by the safety distance, quantifying the calibration of the zero position, improving the calibration accuracy, enabling the operator to quickly master the calibration method, and preventing accidents such as the slab falling during tapping due to calibration problems. Compared with the prior art, this calibration method can greatly improve the calibration accuracy of the zero position of the tapping machine, shorten the calibration time, and at the same time avoid accidents such as steel dropping and the slab position deviating from the center line of the roller table during tapping, improving the production efficiency. Description of the Drawings

[0028] Figure 1 It shows a flowchart of a zero-position calibration method of a tapping machine shown in an exemplary embodiment;

[0029] Figure 2 It shows a schematic structural diagram of the tapping machine in the zero position in an embodiment of the present invention;

[0030] Figure 3 It shows a schematic structural diagram of the tapping machine moving from the zero position to the steel-taking position in an embodiment of the present invention.

[0031] The description of the reference numerals in the embodiment includes:

[0032] Slab 10, tapping arm 20, roller table 30, protective cover 40, laser detector 50. Detailed Embodiment

[0033] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0034] The following will describe the implementation manners of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0035] It should be noted that the diagrams provided in the following embodiments only schematically illustrate the basic concept of the present invention. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The types, quantities, and proportions of the components in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0036] In the following description, a large number of details are explored to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0037] Figure 1 is a flowchart of a zero-position calibration method for a steel tapping machine shown in an exemplary embodiment of the present application. This method can be applied to Figure 3 the steel tapping machine shown. It should be understood that this method can also be applied to other steel tapping machines with a supporting steel structure, and can be specifically executed by other steel tapping machines with a supporting steel structure. This embodiment does not limit the implementation environment and equipment applicable to this method.

[0038] As Figure 1 shown, in an exemplary embodiment, a zero-position calibration method for a steel tapping machine at least includes steps S110 to S130, which are introduced in detail as follows:

[0039] Step S210, obtain the slab width and the slab spacing between adjacent slabs 10 in the heating furnace, and mark the position of the roller table center line;

[0040] Among them, the slab width and the slab spacing can be obtained through measurement, and the position of the center line of the roller table is marked after measurement.

[0041] Step S220, calculate a safety distance according to the slab width and the slab spacing, and the safety distance is used to safely lift the slab 10;

[0042] Optionally, when the length that the front end of the tapping arm 20 extends into the heating furnace is the safety distance, it is the steel-taking position. An encoder is provided on the tapping machine, and the encoder measures the length that the tapping arm 20 extends into the heating furnace.

[0043] Optionally, when the tapping arm 20 is at the steel-taking position, the safety distance is the distance between the end of the tapping arm 20 and the center line on the slab width.

[0044] In the specific implementation process, the safety distance is C, the slab width is w, the slab spacing is B, and the calculation method of the safety distance is w / 4 < C < w / 2 + B. This safety distance can enable the tapping arm 20 to lift the slab 10 when it is at the steel-taking position, so that about 3 / 4 of the slab width is located on the tapping arm 20, specifically on the cushion block of the tapping arm 20. Since the width of the slab 10 on the cushion block is sufficient, no steel-dropping accident will occur during the process of the tapping arm 20 dragging out the slab 10; and since the front end part of the slab 10 extends out of the cushion block, it is convenient to place the slab 10 on the roller table 30 when the tapping arm 20 drags out the slab 10 to the roller table 30.

[0045] Step S230, adjust the tapping arm 20 to extend and make the length that its end exceeds the position of the center line of the roller table be the safety distance, and mark the position of the tapping arm 20 at this time as the zero position;

[0046] In order to measure the zero position of the tapping arm 20, optionally, when the tapping arm 20 is at the zero position, a calibration distance is extended from the front end of the protective cover 40 on the tapping arm 20 in the direction of the heating furnace. The calibration distance is 0 - 4 m, and the end point of the calibration distance is marked as the calibration position. In the actual embodiment, the calibration distance is 0.5 - 2 m. Mark the calibration position on the tapping arm 20. Specifically, the calibration distance selected in this solution is 1 m. A calibration block is provided at the calibration position, and the calibration block is fixed on the tapping arm 20. Specifically, the calibration block is fixed on the tapping arm 20 by welding.

[0047] After the tapping machine fixes the calibration block at the calibration position, if it is necessary to verify the zero position of the tapping arm 20 during the subsequent use process, optionally, when verifying the zero position of the tapping arm 20, measure the straight-line length between the calibration position and the front end of the protective cover 40. If the straight-line length is the calibration distance, then the tapping arm 20 is at the zero position.

[0048] When the tapping arm 20 is in the zero position, as Figure 3 shown, E is the front end of the tapping arm 20; F is the center line of the roller table; D is the position where the calibration block is set; H is the front end of the protective cover 40 of the tapping arm 20. For the initial calibration of the zero position of the tapping arm 20, first adjust the distance between the front end E of the tapping arm 20 and the center line F of the roller table to C, and then weld a calibration block at the D point of the tapping arm 20. The distance between the calibration block and the front end H of the protective cover 40 of the tapping arm 20 is 1M. For the daily calibration of the tapping arm 20 during the use of the tapping machine, adjust the calibration block D to a position 1M away from the H point, and calibrate this position as the zero position of the tapping machine.

[0049] During the use of the tapping machine, the stroke calculation of the tapping arm 20 is as Figure 2 shown. The stroke of the tapping machine from the zero position to the steel-taking position is: ST1 = S1 - S2 - m + W / 2 + C. The stroke of the tapping arm 20 from the steel-taking position to sending the slab 10 onto the center line of the discharging roller table is: ST2 = S1 + W / 2 - m. In the formula: S1 is the distance from the laser detector 50 to the center line of the discharging roller table, S2 is the distance from the starting position of the tapping machine to the center line of the discharging roller table, W is the width of the slab, m is the distance from the front end of the slab 10 to the laser detector 50, and C is the safety distance from the end of the tapping arm 20 to the center line of the slab 10.

[0050] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A zero position calibration method for a steel tapping machine, characterized in that, Including: Obtain the slab width and the slab spacing between adjacent slabs in the heating furnace, and mark the position of the center line of the roller table; Calculate a safety distance according to the slab width and the slab spacing, and the safety distance is used to safely lift the slab; Adjust the length of the tapping arm to extend and make its end exceed the position of the center line of the roller table by the safety distance, and calibrate the position of the tapping arm at this time as the zero position; When the front end of the tapping arm extends into the heating furnace by the safety distance, it is the steel-taking position. An encoder is provided on the tapping machine, and the encoder measures the length of the tapping arm extending into the heating furnace; When the tapping arm is at the steel-taking position, the safety distance is the distance between the end of the tapping arm and the center line on the slab width; The safety distance is C, the slab width is w, the slab spacing is B, and the calculation method of the safety distance is w / 4 < C < w / 2 + B.

2. The zero position calibration method of a steel tapping machine according to claim 1, characterized in that: After adjusting the length of the tapping arm to extend and make its end exceed the position of the center line of the roller table by the safety distance, and calibrating the position of the tapping arm at this time as the zero position, it includes: When the tapping arm is at the zero position, extend a calibration distance from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibration distance is 0 - 4m, and the end point of the calibration distance is marked as the calibration position.

3. A zero position calibration method for a steel tapping machine according to claim 2, characterized in that: When the tapping arm is at the zero position, extend a calibration distance from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibration distance is 0 - 4m, and the end point of the calibration distance is marked as the calibration position, including: The calibration distance is 0.5 - 2m, and mark the calibration position on the tapping arm.

4. A zero position calibration method for a steel tapping machine according to claim 3, characterized in that: When the tapping arm is at the zero position, extend a calibration distance from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibration distance is 0 - 4m, and the end point of the calibration distance is marked as the calibration position, including: The calibration distance is 1m, and mark the calibration position on the tapping arm.

5. A zero position calibration method for a tapping machine according to claim 4, characterized in that: When the tapping arm is at the zero position, extend a calibration distance from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibration distance is 0 - 4m, and the end point of the calibration distance is marked as the calibration position, including: Set a calibration block at the calibration position, and the calibration block is fixed on the tapping arm.

6. A zero position calibration method for a steel tapping machine according to claim 5, characterized in that: When the tapping arm is at the zero position, extend a calibration distance from the front end of the protective cover on the tapping arm in the direction of the heating furnace. The calibration distance is 0 - 4m, and the end point of the calibration distance is marked as the calibration position, including: Set a calibration block at the calibration position, and the calibration block is fixed on the tapping arm by welding.

7. A zero position calibration method for a steel tapping machine according to claim 6, characterized in that: After adjusting the length of the tapping arm to extend and make its end exceed the position of the center line of the roller table by the safety distance, and calibrating the position of the tapping arm at this time as the zero position, it includes: When verifying the zero position of the tapping arm, measure the straight-line length between the calibration position and the front end of the protective cover. If the straight-line length is the calibration distance, then the tapping arm is at the zero position.

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