A digital rapid adjustment method for the fan-shaped segment foundation frame of a slab continuous casting machine

Abstract

The invention relates to a digital rapid adjustment method for a sector base frame of a slab continuous casting machine, comprising the following steps: S1, importing design standard values; S2, installing and adjusting a support seat of the sector base frame; S3, installing a support of a "0" sector frame; S4, placing the sector base frame in place; S5, adjusting the support of the "0" sector frame; S6, measuring the sector base frame; S7, fine-tuning the sector base frame; S8, grouting the support seat of the sector base frame; the invention collects coordinate values ​​of a positioning plate (non-fixed side) and a U-shaped seat (fixed side) of a support seat and a sector base frame through a total station, inputs the coordinate values ​​into a continuous casting installation base frame adjustment calculation software for comparison with the design standard values, and outputs the analyzed deviation value and drawings, the output drawings can intuitively show the adjustment value and direction, and can achieve the purpose of rapid and precise adjustment.

Description

Technical Field

[0001] The present invention belongs to the field of metallurgical technology, and particularly relates to a digital rapid adjustment method for the basic frame of a segment of a slab continuous casting machine. Background Art

[0002] The segment of a slab continuous casting machine is a main equipment in the casting area. The installation and adjustment progress thereof is the key to ensuring the construction period of the continuous casting project. To ensure the casting quality of the slab, the on-line centering accuracy deviation of the segment is required to be within 0.3 mm. Among the prerequisite conditions for ensuring the on-line centering accuracy of the segment, the adjustment of the basic frame of the segment is particularly important. Conventionally, a total station is used to collect data for the adjustment of the basic frame, and CAD software is used. The positioning pin base of the arc segment of the basic frame of the segment is not a horizontal plane and has a certain angle. Measuring positioning holes are left on both sides of the basic frame by the manufacturer. Insert the measuring rod and check the elevation of the measuring rod. This method has a large measurement error. At the same time, the segment is finally installed and positioned at the positioning pin of the base. Although theoretically the elevation of the measuring hole position is correct and the elevation of the positioning pin position of the base should also be correct, there are often manufacturing errors during the production by the manufacturer, and the levelness of the positioning pin of the base cannot be checked. The final effect achieved by this method is not ideal. Summary of the Invention

[0003] The main object of the present invention is to propose a digital rapid adjustment method for the basic frame of a segment of a slab continuous casting machine, which can effectively solve the problems in the background art.

[0004] To achieve the above object, the present invention is realized through the following technical solutions:

[0005] A digital rapid adjustment method for the basic frame of a segment of a slab continuous casting machine includes the following steps:

[0006] S1. Import of design standard values: Pick up and input the relevant coordinate data of equipment components, etc. from the CAD design drawing as design standard values, and input the design standard values into the adjustment calculation software for the continuous casting installation basic frame;

[0007] S2. Installation and adjustment of the support seats of the basic frame of the segment:

[0008] a. The basic frame of the segment includes an arc segment basic frame, a straightening segment basic frame, a first horizontal segment basic frame, a second horizontal segment basic frame, and a third horizontal segment basic frame. Use the crane in the continuous casting pouring bay to install the support seats of each basic frame in place according to the trend of the basic frame of the segment. Each elevation of the support seat includes two support seats, a fixed side and a movable side, which are symmetrically distributed with respect to the casting center line;

[0009] b. Use a total station to measure the longitudinal center, transverse center, and elevation coordinate values of the axle pins of each support seat;

[0010] c. Input the measured data into the continuous casting installation foundation frame adjustment calculation software.

[0011] d. The continuous casting installation foundation frame adjustment calculation software automatically compares the measured coordinate values collected by the total station with the design standard values, and outputs the analyzed deviation values and drawings. Then, adjust the support seat according to the deviation values and drawings.

[0012] S3. Installation of the supports for the "0" segment frame:

[0013] a. The supports for the "0" segment frame are divided into two parts. The upper part is installed on the side of the concrete foundation, and the lower part is assembled on the upper side of the curved segment foundation frame.

[0014] b. Use the overhead crane and chain block to position the trunnion of the "0" segment.

[0015] S4. Positioning of the segmental base frame: Use the main hook and auxiliary hook of the casting bay overhead crane to hoist and position the segmental base frame. The positioning sequence of the segmental base frame is the curved segment foundation frame, the straightening segment foundation frame, the first horizontal segment foundation frame, the second horizontal segment foundation frame, and the third horizontal segment foundation frame, which are positioned from top to bottom in sequence.

[0016] S5. Adjustment of the supports for the "0" segment frame;

[0017] S6. Measurement of the segmental base frame: Detect the position of the segmental base frame through the original measurement holes and measuring rods of the segmental base frame. If the allowable deviation values of the measurement holes or measuring rods do not meet the requirements of the standard specifications, the support seat needs to be finely adjusted.

[0018] S7. Fine adjustment of the segmental base frame;

[0019] a. Use the total station to collect the central coordinate data of the positioning plate (non-fixed side) and U-shaped seat (fixed side) of the segmental base frame.

[0020] b. Input the measured data into the continuous casting installation foundation frame adjustment calculation software.

[0021] c. The continuous casting installation foundation frame adjustment calculation software automatically compares the measured coordinate values collected by the total station with the design standard values, decomposes the deviation into the vertical direction and the tangent direction, and outputs the analyzed deviation values and drawings. Then, adjust the segmental base frame according to the deviation values and drawings, and adjust the shims in the vertical and tangent directions of the positioning plate according to the drawings.

[0022] S8. Grouting of the support seat of the segmental base frame: After the precise adjustment of the segmental base frame is completed and confirmed, perform secondary grouting of the support seat. Use non-shrinking grouting material for grouting to ensure the grouting quality.

[0023] Preferably, in step S2, it is also necessary to measure the levelness of the rotating shaft to ensure that it is perpendicular to the center line of the casting stream.

[0024] Preferably, in step S3, the supports of the "0" - segment frame are arranged on the upper part of the supports of the arc - segment basic frame, which are divided into upper and lower parts and are symmetrically distributed left and right.

[0025] Preferably, in step S4, due to the special shape of the arc - segment basic frame (banana seat), three groups of supports are selected. The installation positions are on two groups of supports with different elevations. The main hook and auxiliary hook of the casting - span crane are used for hoisting. The hoisting points are four symmetric points on the basic frame. The hoisting points have been fully considered during the equipment manufacturing process. The main hook of the crane is hoisted at the hoisting point close to the trailing - edge line side. During the hoisting and positioning process, according to the spatial position, the heights of the main hook and auxiliary hook are appropriately adjusted, and at the same time, it is ensured that the basic frame does not cause displacement to the supports.

[0026] Preferably, in step S5, when adjusting the lateral center, the same reference line (parallel to the tangent line) must be used. When adjusting the center of the upper trunnion, it is not advisable to increase or decrease the adjustment shims inside the positioning wear - resistant sliders to avoid jamming when the "0" - segment is positioned. When adjusting the center and elevation of the lower trunnion, it is measured with the aid of a simulated axle rod. While checking that the center - line position is correct, a 0.05 - mm feeler gauge can be used to check the clearance between the simulated axle rod and the lower trunnion to ensure the parallelism of the trunnions on both sides.

[0027] The present invention provides a digital rapid adjustment method for the segment basic frame of a slab caster, having the following beneficial effects;

[0028] The coordinate values of the supports and the positioning plates (non - fixed side) and U - shaped seats (fixed side) of the segment basic frame are collected by a total station and input into the continuous - casting installation basic - frame adjustment calculation software for comparison with the design standard values, and the analyzed deviation values and drawings are output. The output drawings can visually show the adjustment values and directions, and can achieve the purpose of rapid and accurate adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the layout of the segment basic frame of the present invention;

[0030] Figure 2 It is a schematic diagram of importing the design standard values of the present invention;

[0031] Figure 3 It is a schematic diagram of the deviation - value table after comparison and analysis of the present invention;

[0032] Figure 4 It is a schematic diagram of the structures of the movable side and fixed side of the support of the present invention;

[0033] Figure 5Schematic diagram of upper trunnion adjustment of the present invention;

[0034] Figure 6 Schematic diagram of lower trunnion adjustment of the present invention;

[0035] Figure 7 Schematic diagram of hoisting the segment base frame of the present invention.

[0036] In the figure: 1. Support seat; 2. Arcuate segment base frame; 3. Straightening segment base frame; 4. First horizontal segment base frame; 5. Second horizontal segment base frame; 6. Third horizontal segment base frame. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

[0038] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined. In addition, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Embodiment, such as Figures 1-7 shown, a digital rapid adjustment method for the basic frame of a segment of a slab continuous casting machine, comprising the following steps:

[0042] S1. Import of design standard values: Pick up and input the relevant coordinate data of equipment components, etc. from the CAD design drawing as the design standard values, and input the design standard values into the continuous casting installation basic frame adjustment calculation software, as Figure 2 shown;

[0043] S2. Installation and adjustment of the support seats 1 of the segment basic frame:

[0044] a. As Figure 1 shown, the segment basic frame includes an arc segment basic frame 2, a straightening segment basic frame 3, a first horizontal segment basic frame 4, a second horizontal segment basic frame 5, and a third horizontal segment basic frame 6. Use the continuous casting pouring bay crane to install the support seats 1 of each basic frame in place according to the trend of the segment basic frame, as Figure 4 shown. Each elevation of the support seat 1 includes a fixed side and a movable side support seat 1, symmetrically distributed with respect to the casting center line;

[0045] b. Use a total station to measure the longitudinal center, transverse center, and elevation coordinate values of the pin shafts of each support seat 1;

[0046] c. Input the measured data into the continuous casting installation basic frame adjustment calculation software;

[0047] d. The continuous casting installation basic frame adjustment calculation software automatically compares according to the design standard values and the measured coordinate values collected by the total station, and outputs the analyzed deviation values and drawings, as Figure 3 shown. Adjust the support seat 1 according to the deviation values and drawings; in addition, it is also necessary to measure the levelness of the rotating shaft to ensure that it is perpendicular to the casting center line;

[0048] The continuous casting installation basic frame adjustment calculation software uses a difference calculation program, which is an existing conventional technology. The output deviation value is a value that can be directly adjusted, and the adjustment direction is distinguished by its positive and negative.

[0049] Because the segment basic frame is a special-shaped structure and is affected by cumulative errors such as manufacturing errors and transportation errors, after the adjustment deviation of the support seat 1 reaches the accuracy requirements, secondary grouting is not carried out first.

[0050] S3. Installation of the supports of the "0" segment frame:

[0051] a. The support of the "0" - segment framework is divided into two parts. The upper part is installed on the side of the concrete foundation, and the lower part is assembled on the upper side of the arc - segment foundation framework 2. Specifically, the support of the "0" - segment framework is set on the upper part of the support seat 1 of the arc - segment foundation framework 2, divided into upper and lower parts, symmetrically distributed left and right.

[0052] b. Use a traveling crane and a chain block to position the trunnion of the "0" - segment in place;

[0053] Due to the special installation position of the trunnion of the "0" - segment, which is installed on a vertical foundation and cannot be directly positioned by the traveling crane, it is necessary to use a chain block and assist with manpower for positioning.

[0054] S4. Positioning of the segment - shaped foundation framework: As Figure 7 shown, use the main hook and auxiliary hook of the casting - bay traveling crane to hoist and position the segment - shaped foundation framework. The positioning sequence of the segment - shaped foundation framework is the arc - segment foundation framework 2, the straightening - segment foundation framework 3, the first horizontal - segment foundation framework 4, the second horizontal - segment foundation framework 5, and the third horizontal - segment foundation framework 6, positioning from top to bottom in sequence;

[0055] Due to its special shape (banana seat), the arc - segment foundation framework 2 selects three groups of support seats 1 and is installed on two groups of support seats 1 with different elevations. Use the main hook and auxiliary hook of the casting - bay traveling crane for hoisting. The hoisting points are selected at four symmetric points on the foundation framework. The hoisting points have been fully considered during the equipment manufacturing process. The main hook of the traveling crane hoists at the hoisting point close to the trailing - edge line. During the hoisting and positioning process, appropriately adjust the heights of the main hook and auxiliary hook according to the spatial position, and at the same time ensure that the foundation framework does not cause displacement to the support seat 1;

[0056] S5. Adjustment of the support of the "0" - segment framework;

[0057] When adjusting the lateral center, the same reference line (parallel to the tangent line) must be used. When adjusting the center of the upper trunnion, it is not advisable to increase or decrease the adjustment shims inside the positioning wear - resistant slider to avoid jamming when the "0" - segment is positioned. When adjusting the center and elevation of the lower trunnion, measure with the aid of a simulated axle rod. While checking that the center - line position is correct, a 0.05 - mm feeler gauge can be used to check the clearance between the simulated axle rod and the lower trunnion to ensure the parallelism of the trunnions on both sides. The adjustment schematic diagram is as Figures 5-6 shown;

[0058] S6. Measurement of the segment - shaped foundation framework: Detect the position of the segment - shaped foundation framework through the original measurement holes and measurement rods of the segment - shaped foundation framework. If the allowable deviation values of the measurement holes or measurement rods do not meet the requirements of the standard specifications, fine - tuning of the support seat 1 is required;

[0059] During the manufacturing process of the segment - shaped foundation framework, special measurement holes or measurement rods are set. Clean the measurement holes or measurement rods to minimize measurement errors.

[0060] S7. Fine adjustment of the segment basic framework;

[0061] a. Use a total station to collect the central coordinate data of the positioning plate (non-fixed side) and U-shaped seat (fixed side) of the segment basic framework.

[0062] b. Input the measured data into the continuous casting installation basic framework adjustment calculation software.

[0063] c. The continuous casting installation basic framework adjustment calculation software automatically compares with the design standard values according to the actually measured coordinate values collected by the total station, decomposes the deviation into the vertical direction and the tangent direction, outputs the analyzed deviation values and drawings, adjusts the segment basic framework according to the deviation values and drawings, and adjusts the shims in the vertical and tangent directions of the positioning plate according to the drawings.

[0064] S8. Grouting of the support seat 1 of the segment basic framework: After the precise adjustment of the segment basic framework is completed and confirmed, secondary grouting of the support seat 1 is carried out. Non-shrinking grouting material is used for grouting to ensure the grouting quality.

[0065] The present invention collects the coordinate values of the support seat 1 and the positioning plate (non-fixed side) and U-shaped seat (fixed side) of the segment basic framework by a total station, inputs them into the continuous casting installation basic framework adjustment calculation software for comparison with the design standard values, and outputs the analyzed deviation values and drawings. The output drawings can intuitively show the adjustment values and directions, and can achieve the purpose of rapid and precise adjustment.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A digital rapid adjustment method for a slab continuous casting machine segment base frame, characterized in that: The steps include: S1. Importing design standard values: Pick up and input the relevant coordinate data of equipment components in the CAD design drawing as the design standard value, and input the design standard value into the continuous casting installation foundation frame adjustment calculation software; S2. Installation and adjustment of the support seat of the fan-shaped segment foundation frame: a. The fan-shaped segment foundation frame includes the arc segment foundation frame, the straightening segment foundation frame, the first horizontal segment foundation frame, the second horizontal segment foundation frame, and the third horizontal segment foundation frame. The support seats of each foundation frame are installed in place according to the direction of the fan-shaped segment foundation frame by using a continuous casting straddle crane. Each elevation of the support seat includes two support seats on the fixed side and the movable side, which are symmetrically distributed with respect to the center line of the casting strand; b. Use a total station to measure the longitudinal center, transverse center and elevation coordinates of the axle pins of each support seat; c. Input the measured data into the continuous casting installation foundation frame adjustment calculation software; d. The calculation software for adjusting the foundation frame of continuous casting installation automatically compares the design standard value with the measured coordinate value collected by the total station, and outputs the deviation value and drawings after analysis, and adjusts the support seat according to the deviation value and drawings; S3, "0" segment frame support installation: a. The "0" segment frame support is divided into two parts, the upper part is installed on the side of the concrete foundation, and the lower part is assembled on the upper side of the arc segment foundation frame; b. Use the crane and hand chain hoist to put the trunnion of section "0" into place; S4, placement of the fan-shaped segment foundation frame: the main hook and auxiliary hook of the casting straddle crane are used to hoist the fan-shaped segment foundation frame into place. The placement order of the fan-shaped segment foundation frame is the arc segment foundation frame, the straightening segment foundation frame, the first horizontal segment foundation frame, the second horizontal segment foundation frame, and the third horizontal segment foundation frame, from top to bottom; S5, "0" segment frame support adjustment; S6. Measurement of the fan-shaped segment foundation frame: The position of the fan-shaped segment foundation frame is detected through the original measuring holes and measuring rods of the fan-shaped segment foundation frame. If the allowable deviation value of the measuring hole or the measuring rod does not meet the requirements of the standard specification, the support seat needs to be fine-tuned; S7, fine adjustment of the fan-shaped segment foundation frame; a. Use a total station to collect the center coordinate data of the positioning plate on the non-fixed side and the U-shaped seat on the fixed side of the fan-shaped segment foundation frame; b. Input the measured data into the continuous casting installation foundation frame adjustment calculation software; c. The calculation software for adjusting the foundation frame of continuous casting installation automatically compares the design standard value with the measured coordinate value collected by the total station, decomposes the deviation into the vertical direction and the tangent direction, and outputs the deviation value and drawings after analysis. The foundation frame of the fan-shaped segment is adjusted according to the deviation value and the drawings, and the adjustment gaskets in the vertical and tangent directions of the positioning plate are adjusted according to the drawings; S8. Grouting of the support seat of the fan-shaped segment foundation frame: After the precise adjustment of the fan-shaped segment foundation frame is completed and confirmed, the secondary grouting of the support seat is carried out. The grouting uses non-shrinkage grouting materials to ensure the grouting quality.

2. The method for digitally quickly adjusting the basic frame of a slab continuous casting machine segment according to claim 1 is characterized in that: In step S2, it is also necessary to measure the horizontality of the axle pin to ensure that it is perpendicular to the center line of the casting strand.

3. The digital rapid adjustment method of the slab continuous casting machine segment base frame according to claim 1 is characterized in that: In step S3, the support of the "0" segment frame is arranged on the upper part of the support base of the arc segment basic frame, and is divided into upper and lower parts, which are symmetrically distributed on the left and right.

4. The digital rapid adjustment method of the slab continuous casting machine segment base frame according to claim 1 is characterized in that: In step S4, due to its special shape, the arc segment foundation frame is selected to use three groups of support seats. The installation position is located on two groups of support seats with different elevations. The main hook and auxiliary hook of the cast straddle crane are used for hoisting. The hoisting points are selected from four symmetrical points on the foundation frame. The hoisting points have been fully considered in the equipment manufacturing process. The main hook of the crane is hoisted at the hoisting point close to the rear edge line side. During the hoisting process, the height of the main hook and the auxiliary hook are appropriately adjusted according to the spatial position, while ensuring that the foundation frame does not cause position changes to the support seat.

5. The digital rapid adjustment method of the slab continuous casting machine segment base frame according to claim 1 is characterized in that: In step S5, the same reference line must be used when adjusting the lateral center, and the reference line is parallel to the tangent line. When adjusting the center of the upper ear shaft, it is not advisable to increase or decrease the adjustment gasket on the inner side of the positioning wear-resistant slider to avoid obstruction when the "0" segment is in place. When adjusting the center and elevation of the lower ear shaft, use the simulated shaft rod for measurement; while checking that the center line position is correct, use a 0.05mm feeler gauge to check the gap between the simulated shaft rod and the lower ear shaft to ensure the parallelism of the left and right ear shafts.

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