A multi-bolt efficient and accurate pre-burying positioning method for a continuous casting device

Abstract

The application discloses a kind of multi-bolt high-efficiency accurate pre-burying positioning methods of continuous casting equipment, comprising the following steps: S1: construction early preparation, obtain the bolt construction positioning diagram and equipment installation drawing of continuous casting equipment, and the position, quantity, diameter and anchoring length parameters of multiple bolts required for the same continuous casting equipment are clarified.S2: sleeve selection and preparation, select the appropriate sleeve according to the bolt diameter determined in S1, and the sleeve reserves space for later adjustment.S3: built-in bolt adjusting plate installation, install the adjusting plate at the preset position inside the sleeve, a through hole with a preset aperture is formed on the adjusting plate, and the bolt is pre-installed into the sleeve from the bottom of the sleeve.The application can avoid the cumulative error when multiple bolts are positioned synchronously, reduce the repeated calibration steps, and allow for flexible fine-tuning of the bolt position through the adjusting plate during concrete pouring impact and vibration, preventing bolt deviation, improving the efficiency and precision of multiple bolt cooperative installation, and meeting the high-precision installation requirements.

Description

Technical Field

[0001] This invention relates to the field of bolt pre-embedding technology, and in particular to a method for efficient and precise pre-embedding and positioning of multiple bolts in continuous casting equipment. Background Technology

[0002] Continuous casting equipment is a key piece of equipment in steel production, connecting steelmaking and rolling. Its function is to cool the high-temperature molten steel from the steelmaking furnace into solid billets such as slabs and billets through a crystallizer, which are then sent to the subsequent rolling stage. Due to its weight, complex operating load, and high precision requirements, continuous casting equipment needs to use multiple bolts to evenly distribute its weight to the foundation, preventing foundation cracking and meeting the millimeter-level dimensional accuracy requirements of the billets. Existing methods for measuring multiple bolts in continuous casting equipment typically rely on manual stringing and stringing for positioning, requiring repeated calibration. This is not only time-consuming and inefficient, but also prone to cumulative errors when positioning multiple bolt groups simultaneously, making it difficult to meet high-precision installation requirements. Furthermore, positioning multiple bolts one by one, fixing each bolt with a template or bracket before pouring concrete, is unsuitable for the simultaneous installation of a large number of bolts, resulting in a long work cycle. The rigid connection between the bolts and the template / bracket lacks adjustment margin, and the impact and vibration of concrete pouring can easily cause bolt misalignment, leading to misalignment of subsequent equipment installation holes, requiring secondary processing and reducing the efficiency and accuracy of multi-bolt collaborative installation. Therefore, this invention proposes an efficient and precise pre-embedded positioning method for multiple bolts in continuous casting equipment. Summary of the Invention

[0003] The purpose of this invention is to address the problems in the prior art where manual stringing and stringing are required for positioning, which necessitates repeated calibration. This is not only time-consuming and inefficient, but also prone to cumulative errors when positioning multiple bolt groups simultaneously, making it difficult to meet the requirements of high-precision installation. Furthermore, positioning multiple bolts one by one, fixing each bolt with a template or bracket before pouring concrete, is not adaptable to the simultaneous installation of a large number of bolts, resulting in a long operation cycle. In addition, the rigid connection between the bolts and the template or bracket has no adjustment margin, and the impact and vibration of the concrete pouring can easily cause the bolts to shift, leading to misalignment of the holes in subsequent equipment installations, requiring secondary processing, and reducing the efficiency and accuracy of multi-bolt collaborative installation. Therefore, this invention proposes a method for efficient and accurate pre-embedded positioning of multiple bolts in continuous casting equipment.

[0004] The technical solution of this invention: A method for efficient and precise pre-embedded positioning of multiple bolts in continuous casting equipment, comprising the following steps: S1: Pre-construction preparation, obtain bolt construction positioning diagram and equipment installation diagram of continuous casting equipment, and clarify the position, quantity, diameter and anchorage length parameters of multiple bolts required for the same continuous casting equipment; S2: Sleeve selection and preparation. Select a suitable sleeve based on the bolt diameter determined in S1, and reserve space for later adjustment in the sleeve. S3: Built-in bolt adjustment plate installation. The adjustment plate is installed in a preset position inside the sleeve. A through hole with a preset diameter is opened on the adjustment plate. The bolt is pre-installed into the sleeve from the bottom of the sleeve. S4: The bolt jig is assembled and installed as a whole. Multiple bolts are connected in series with the prefabricated sleeve to form an integral structure. A total station is used to lay out the jig at the sleeve cover, so that multiple bolts can be positioned and installed at the same time.

[0005] Optionally, in S2, when the bolt diameter d ≤ 20 mm, the sleeve diameter is selected as 2.0 d to ensure the sleeve perpendicularity.

[0006] Optionally, in S2, when the bolt diameter d > 20mm, the sleeve diameter is selected as 2.5-3.0d to ensure the bolt adjustment amount in the later stage.

[0007] Optionally, in S2, the length of the sleeve is 50mm longer than the length of the corresponding bolt.

[0008] Optionally, in S3, the adjusting plate includes a collar, a groove is provided on one side of the collar, a limit ring is fixedly provided on one side of the collar, a set of sliders is slidably arranged inside the groove, a connecting ring is fixedly connected to the opposite end of the sliders, the connecting ring is sleeved with a bolt, and the adjusting plate is installed at the bolt anchoring length of 50mm on the bottom surface inside the sleeve.

[0009] Optionally, in S3, the diameter of the through hole on the adjusting plate is 2d, where d is the bolt diameter, used to adjust the bolt's horizontal accuracy.

[0010] Optionally, in S3, when the bolt bend anchor is too long and an adjustment plate can be installed, the sleeve is divided into two sections. The first section is the bolt bend anchor position. After the first section is welded to the relevant structure, the second section is installed on the upper part of the bolt.

[0011] Optionally, S3 also includes a stiffening rib installation step, with the stiffening ribs installed at 200mm intervals, and at least two stiffening ribs installed, for vibration resistance and bolt pull-out resistance.

[0012] Optionally, in S3, after the stiffening ribs are installed, the bottom plate and the sleeve cover are sealed, and a sleeve groove is opened on the bottom surface of the sleeve cover. After the concrete is poured, the sleeve cover is removed and the bolts are installed.

[0013] Optionally, in S4, the through holes in the adjusting plate inside the sleeve have a reserved space of 15-20mm in both the left and right directions. The size of the reserved space is determined according to the size of the bolt, which facilitates the adjustment of the bolt's left and right and up and down positions during equipment installation.

[0014] This invention utilizes a sleeve combined with a built-in adjusting plate and a bolt jig as an integrated structure. The sleeve is designed to be adapted to the bolt diameter and has reserved adjustment space. In conjunction with the bolt jig for total station layout and positioning, multiple bolts are connected to the sleeve in series to form a whole. This avoids the cumulative error when multiple bolts are positioned synchronously, reduces repeated calibration steps, and allows for flexible fine-tuning of bolt positions during concrete pouring impact and vibration. This prevents bolt misalignment, improves the efficiency and accuracy of multi-bolt collaborative installation, and meets the requirements of high-precision installation.

[0015] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a flowchart of a method for efficient and precise pre-embedded positioning of multiple bolts in a continuous casting equipment according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the connection structure between the sleeve and the frame according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the sleeve structure according to an embodiment of the present invention; Figure 4 This is a cross-sectional structural diagram of the sleeve according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the socket plate according to an embodiment of the present invention.

[0018] Figure label: 1. Bolt; 2. Sleeve; 3. Adjusting plate; 31. Collar; 32. Slide groove; 33. Limiting ring; 34. Sliding block; 35. Connecting ring; 4. Through hole; 5. Gear frame; 6. Cylinder cover; 7. Stiffening rib; 8. Base plate; 9. Sleeve groove. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] Example 1

[0022] like Figures 1 to 5 As shown, the present invention proposes a method for efficient and precise pre-embedded positioning of multiple bolts in continuous casting equipment, comprising the following steps: S1: Pre-construction preparation, obtain the bolt construction positioning diagram and equipment installation diagram of the continuous casting equipment, clarify the position, quantity, diameter and anchorage length parameters of multiple bolts 1 required for the same continuous casting equipment, provide an accurate basis for subsequent sleeve selection and installation, and the upper and lower ends of multiple bolts 1 are respectively equipped with nuts. S2: Selection and preparation of sleeve 2. Select a suitable sleeve 2 according to the diameter of bolt 1 determined in S1. Sleeve 2 is reserved for the adjustment of bolt 1 in the later stage. S3: The built-in bolt adjusting plate 3 is installed by welding the adjusting plate 3 into a preset position inside the sleeve. The adjusting plate 3 has a through hole 4 with a preset diameter. The bolt 1 is pre-installed into the sleeve 2 from the bottom of the sleeve 2 to facilitate the installation of the sleeve 2. S4: The bolt jig 5 is assembled and installed as a whole. Multiple bolts 1 are connected in series with the sleeve 2 to form an integral structure, ensuring a stable structure. The jig 5 is positioned at the cylinder cover 6 using a total station to achieve simultaneous positioning and synchronous installation of multiple bolts 1. This significantly reduces the time cost of positioning each bolt individually and improves construction efficiency and accuracy.

[0023] Example 2

[0024] like Figures 1 to 3 As shown, based on Embodiment 1, in S2, the cylindrical sleeve 2 is used in conjunction with the bolt 1. When the bolt 1 diameter d ≤ 20mm, the sleeve 2 diameter is selected as 2.0d, which allows the bolt 1 to move inside the sleeve 2, facilitating position adjustment and ensuring the verticality of the sleeve 2. This avoids material waste and unstable positioning caused by an excessively large sleeve. When the bolt 1 diameter d > 20mm, the sleeve 2 diameter is selected as 2.5-3.0d. Because the larger diameter bolt 1 experiences greater force during installation and use, a larger sleeve 2 diameter ensures sufficient adjustment range for the bolt 1 to meet the equipment installation accuracy requirements. Furthermore, to ensure the installation length and anchoring effect of the bolt 1 within the sleeve 2, the length of the sleeve 2 needs to be 50mm longer than the corresponding bolt 1 length. This length difference prevents insufficient anchoring depth due to insufficient bolt 1 length and provides sufficient space for vertical adjustment of the bolt 1 within the sleeve 2.

[0025] like Figure 4 and Figure 5 As shown in Figure S3, the flat adjusting plate 3 includes a collar 31, which is an annular structure with a long groove 32 on one side. A ring-shaped limiting ring 33 is fixedly installed on one side of the collar 31. A set of block-shaped sliders 34 are slidably installed inside the groove 32, reducing the friction between the bolt 1 and the sleeve 2. A ring-shaped connecting ring 35 is fixedly connected to the opposite end of the slider 34. The connecting ring 35 is sleeved with the bolt 1. During installation, the connecting ring 35 is sleeved with the bolt 1, and then the slider 34 is placed in the groove 32. The connecting ring 35 is sleeved on the bolt 1 and welded to one side of the collar 31 to limit the slider 34 and prevent displacement. The adjusting plate 3 is installed by welding at the anchoring length of the bolt 1 50mm inside the bottom surface of the sleeve 2, ensuring that the bolt 1 has space to move up and down inside the sleeve 2.

[0026] In addition, the diameter of the circular through hole 4 on the adjusting plate 3 is 2d, where d is the diameter of the bolt 1. This hole is used to adjust the horizontal accuracy of the bolt 1, allowing for movement between the bolt 1 and the through hole 4. When the bolt 1 is bent too long and the adjusting plate 3 can be installed, the sleeve 2 is divided into two sections. The first section is the bent anchor position of the bolt 1. After the first section is welded to the relevant structure, the second section is installed on the upper part of the bolt 1 to ensure that the bolt 1 has sufficient movement space.

[0027] Secondly, the stiffening ribs 7 are installed in plate-like form at 200mm intervals, with at least two stiffening ribs installed. The stiffening ribs 7 are fitted against the outer wall of the sleeve 2 to provide stable support for the sleeve 2, resisting vibration and preventing bolt 1 pull-out. After the stiffening ribs 7 are installed, the circular base plate 8 at the bottom of the sleeve 2 and the top cover 6 are sealed. The cover 6 has a disc-shaped structure, and a circular groove 9 is opened on the bottom surface of the cover 6. The groove 9 can engage with the upper end of the bolt 1, thereby positioning the bolt 1. After the concrete is poured, the cover 6 is removed before installing the bolt 1, preventing the poured concrete from splashing into the interior of the sleeve 2.

[0028] Furthermore, in S4, the through hole 4 of the adjusting plate 3 inside the sleeve 2 has a reserved space of 15-20mm in both the left and right directions. The size of the reserved space is determined according to the size of the bolt 1. This reserved space facilitates the adjustment of the left and right and up and down positions of the bolt 1 during equipment installation, effectively making up for possible minor deviations in the early construction and ensuring precise connection between the equipment and the bolt.

[0029] The working principle of this embodiment is as follows: First, obtain the bolt construction positioning diagram and equipment installation diagram of the continuous casting equipment. Through the drawings, check the specific parameters of multiple bolts 1 required for the same continuous casting equipment in detail, and clarify the installation position, total quantity, diameter specification and anchorage length of each bolt 1. At the same time, nut is assembled on the upper and lower ends of all bolts 1 in advance, so as to lay a precise data foundation for the subsequent selection of sleeve 2, installation of adjustment plate 3 and assembly of jig 5, and avoid subsequent construction deviations due to unclear parameters.

[0030] Next, based on the previously determined diameter of bolt 1, sleeve 2 is selected and prepared accordingly. If the diameter of bolt 1 (d) is ≤ 20mm, a cylindrical sleeve 2 with a diameter of 2.0d is selected. This ensures that bolt 1 has sufficient displacement adjustment space within sleeve 2 to calibrate verticality, while avoiding material waste and unstable positioning due to an excessively large sleeve 2. If the diameter of bolt 1 (d) is > 20mm, a sleeve 2 with a diameter of 2.5-3.0d is selected to accommodate the greater force characteristics of the large-diameter bolt 1, ensuring sufficient adjustment range to meet the equipment installation accuracy requirements. Simultaneously, the length of sleeve 2 is controlled to be 50mm longer than the corresponding bolt 1 length. This prevents insufficient anchoring depth due to insufficient bolt 1 length and provides space for vertical adjustment of bolt 1. If the bolt 1 bend anchor is too long and an adjustment plate 3 can be installed, sleeve 2 is divided into two sections. The first section corresponds to the bend anchor position of bolt 1, preparing for subsequent segmented installation.

[0031] Subsequently, a flat adjusting plate 3 is fabricated. Its core structure includes an annular collar 31, a long strip-shaped groove 32 on one side of the collar 31, an annular limiting ring 33 fixed on one side of the collar 31, and a set of block-shaped sliders 34 slidably disposed within the groove 32. The opposite ends of the sliders 34 are fixedly connected to an annular connecting ring 35 for engaging with the bolt 1. At the same time, a circular through hole 4 with a diameter of 2d (d is the diameter of the bolt 1) is opened on the adjusting plate 3 to reserve space for movement to adjust the horizontal accuracy of the bolt 1.

[0032] Furthermore, first, the sleeve ring 35 is fitted onto the bolt 1, then the slider 34 is placed into the groove 32. Next, the sleeve ring 35 is welded to one side of the sleeve ring 31 to limit the slider 34 and prevent displacement. Then, the assembled adjusting plate 3 is welded to the bottom surface inside the sleeve 2, specifically at the 50mm anchorage length of the bolt 1, ensuring that the bolt 1 has vertical movement space within the sleeve 2. If a segmented sleeve 2 is used, after the first segment of the sleeve 2 is welded to the relevant structure, the second segment of the sleeve 2 is installed on top of the bolt 1, ensuring that the bolt 1's movement space is not affected.

[0033] Secondly, select sheet-like stiffening ribs 7 and install them on the outer wall of the sleeve 2 at intervals of 200mm, with no fewer than two installed. The stiffening ribs 7 provide stable support for the sleeve 2, enhance the sleeve 2's vibration resistance and bolt 1 pull-out resistance, and prevent the sleeve 2 from deforming during subsequent construction or use, thus affecting the positioning of the bolt 1.

[0034] After the stiffening rib 7 is installed, first seal the circular base plate 8 at the bottom of the sleeve 2, and then install the top disc-shaped cylinder cover 6. The bottom surface of the cylinder cover 6 has a pre-set circular groove 9. During installation, the groove 9 is precisely fitted with the upper end of the bolt 1 to achieve temporary positioning of the bolt 1. This step can prevent concrete from splashing into the inside of the sleeve 2 during subsequent concrete pouring, thus avoiding affecting the later installation of the bolt 1.

[0035] Next, using the sleeve 2 that was prepared in the previous stage, multiple bolts 1 are connected in series with the sleeve 2 to form an integral structure, which constitutes the bolt frame 5. The series design ensures the stability of the multi-bolt 1 structure and avoids positional deviation when a single bolt 1 is installed independently.

[0036] Furthermore, a total station is used for layout, and the bolt jig 5 is precisely positioned at the cylinder cover 6 according to the construction positioning diagram, enabling the simultaneous positioning and synchronous installation of multiple bolts 1. During installation, the 15-20mm space reserved in the left and right directions of the through hole 4 of the adjusting plate 3 inside the sleeve 2 can be used to flexibly adjust the left and right and up and down positions of the bolts 1. This can not only compensate for minor deviations that may exist in the early construction, but also prevent the bolts 1 from shifting during concrete pouring impact and vibration, ensuring precise docking between the equipment and the bolts 1 in the later stage.

[0037] Finally, after the concrete is poured and reaches the design strength, the top cover 6 of the sleeve 2 is removed. At this time, the bolt 1 has been positioned accurately through the previous positioning and adjustment, and the subsequent installation of the bolt 1 can be carried out directly without repeated calibration, which greatly shortens the construction cycle and ensures the accuracy and stability of the installation of multiple bolts 1 in the continuous casting equipment, meeting the high-precision installation requirements of the equipment.

[0038] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for efficient and precise pre-embedded positioning of multiple bolts in continuous casting equipment, characterized in that, Includes the following steps: S1: Pre-construction preparation, obtain bolt construction positioning diagram and equipment installation diagram of continuous casting equipment, and clarify the position, quantity, diameter and anchorage length parameters of multiple bolts (1) required for the same continuous casting equipment; S2: Sleeve selection and preparation. Select a suitable sleeve (2) based on the diameter of the bolt (1) determined in S1. The sleeve (2) is reserved for later adjustment. S3: Install the built-in bolt adjusting plate (3), install the adjusting plate (3) in the preset position inside the sleeve, open the through hole (4) with a preset diameter on the adjusting plate (3), and pre-install the bolt (1) from the bottom of the sleeve (2) into the sleeve (2); S4: The bolt frame (5) is assembled and installed as a whole. Multiple bolts (1) are connected in series with the sleeve (2) to form an integral structure. The frame (5) is positioned at the cylinder cover (6) by using a total station to lay out the lines, so that multiple bolts (1) can be positioned and installed at the same time. In S3, the adjusting plate (3) includes a collar (31), a groove (32) is provided on one side of the collar (31), a limit ring (33) is fixedly provided on one side of the collar (31), a set of sliders (34) are slidably arranged inside the groove (32), and a connecting ring (35) is fixedly connected to the opposite end of the slider (34). The connecting ring (35) is sleeved with the bolt (1) to install the adjusting plate (3) at the anchoring length of the bolt (1) 50mm inside the bottom surface of the sleeve (2); In S3, the diameter of the through hole (4) opened on the adjusting plate (3) is 2d, where d is the diameter of the bolt (1) and is used to adjust the horizontal accuracy of the bolt (1); In S4, the through hole (4) of the adjusting plate (3) inside the sleeve (2) has a reserved space of 15-20mm in the left and right directions. The size of the reserved space is determined according to the size of the bolt (1) so as to facilitate the adjustment of the left and right and up and down positions of the bolt (1) during equipment installation.

2. The method for efficient and precise pre-embedded positioning of multiple bolts in continuous casting equipment according to claim 1, characterized in that, In S2, when the diameter d of the bolt (1) is less than or equal to 20 mm, the diameter of the sleeve (2) is selected as 2.0 d to ensure the perpendicularity of the sleeve (2).

3. The method for efficient and precise pre-embedded positioning of multiple bolts in continuous casting equipment according to claim 1, characterized in that, In S2, when the diameter d of the bolt (1) is greater than 20 mm, the diameter of the sleeve (2) is selected to be 2.5-3.0d to ensure the adjustment amount of the bolt (1) in the later stage.

4. The method for efficient and precise pre-embedded positioning of multiple bolts in continuous casting equipment according to claim 1, characterized in that, In S2, the length of the sleeve (2) is 50mm longer than the length of the corresponding bolt.

5. The method for efficient and precise pre-embedded positioning of multiple bolts in continuous casting equipment according to claim 1, characterized in that, In S3, when the bolt (1) is bent too long and the adjusting plate (3) can be installed, the sleeve (2) is divided into two sections. The first section is the bent anchor position of the bolt (1). After the first section is welded to the relevant structure, the second section is installed on the upper part of the bolt (1).

6. The method for efficient and precise pre-embedded positioning of multiple bolts in continuous casting equipment according to claim 1, characterized in that, S3 also includes the installation steps of stiffening ribs (7). The installation spacing of stiffening ribs (7) is 200mm, and the number of stiffening ribs (7) installed is not less than two, for vibration resistance and bolt (1) pull-out resistance.

7. The method for efficient and precise pre-embedded positioning of multiple bolts in continuous casting equipment according to claim 1, characterized in that, In S3, after the stiffening rib (7) is installed, the bottom plate (8) and the sleeve cover (6) of the sleeve (2) are sealed, and the bottom surface of the sleeve cover (6) is provided with a sleeve groove (9). After the concrete is poured, the sleeve cover (6) is removed and the bolts (1) are installed.

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