A support system and erecting method for a super large rolling mill housing rotary hoisting device

Abstract

The application relates to a support system for a large-scale rolling mill rack rotating hoisting device, which comprises a slide, a first support column, a first support column and a rolling mill base; the slide comprises two; a plurality of first support columns are arranged at intervals with a preset distance and are used for supporting the middle part and the first end of the track; a second support column is arranged below the second end of the track and is used for supporting the second end of the track; and the rolling mill base is arranged below the second end of the track and abuts against the second support column. The application has the advantages that the rotating hoisting device can complete horizontal movement and hoisting in the environment with uneven equipment foundation and many deep pits, the operation speed is high, the efficiency is high, and the cost can be greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of installation technology for extra-large rolling mill stands, and in particular to a support system for a rotating hoisting device for extra-large rolling mill stands. Background Technology

[0002] The mill stand is a component of the rolling mill that houses all the parts in the working stand, including rolls, roll bearings, roll adjustment devices, and guide devices, and bears all the rolling forces. The stand is one of the most important components of the rolling mill, and the accuracy of its hoisting and installation is the core of the rolling mill installation. The hoisting method for the mill stand needs to be determined based on a comprehensive consideration of the site layout, the hoisting capacity of the hoisting machinery, and the available space for hoisting, adhering to the principles of safety, efficiency, and low cost. Large-scale rolling mill stands can be efficiently and safely installed by lateral movement and hoisting using a rotating hoisting device. The specific process involves supporting and connecting the rolling mill stand to the rotating hoisting device, then sliding it to the position of the rolling mill stand mounting base via a set slide rail. The rotating hoisting device then rotates the rolling mill stand to bring it into a vertical hoisting state before lowering it for installation. However, since the rolling mill stand weighs several tons to tens of tons, the load on the slide rail is excessive, and the support structure for erecting the slide rail has extremely high requirements. Therefore, a suitable support structure is needed to adapt to the uneven foundation environment with many deep pits and to support the slide rail, and to ensure that the slide rail can withstand the pressure of the rolling mill stand and the rotating hoisting device. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a support system for a rotating hoisting device for an extra-large rolling mill stand, comprising:

[0004] The slide consists of two tracks;

[0005] The first support column is provided in multiple units at preset intervals, which are used to support the middle part and the first end of the slide.

[0006] The second support column is located below the second end of the slide rail and is used to support the second end of the slide rail;

[0007] The mill base is located below the second end of the slide and abuts against the second support column.

[0008] Furthermore, the first support column is a single-tube support, and its length matches the distance between the slide rail and the support point of the equipment foundation below.

[0009] Furthermore, the second support column includes an upper support and a lower support connected by upper and lower supports.

[0010] Furthermore, the upper support is a double-tube support or a four-tube support, and the lower support is a double-tube support.

[0011] Furthermore, the upper support and the lower support are connected by a second steel billet; the second steel billet is disposed on the lower support, the upper support is disposed on the second steel billet, the upper support is used to support the slide rail, and one end of the second steel billet abuts against the mill base.

[0012] Furthermore, a first steel billet is also provided at the bottom of the second end of the slide; the first steel billet is provided on the second support column or on the equipment foundation support point below the slide, and the second end of the slide is provided on the first steel billet.

[0013] Furthermore, a plurality of leveling components are provided below the second end of the slide; the leveling components are placed on the equipment foundation support point below the second end of the slide and are used to adjust the position of the first steel billet so that when the slide is subjected to force, the pressure is transferred to the first steel billet.

[0014] Furthermore, both the first support column and the second support column have embedded steel plates at their bottoms.

[0015] Another aspect of the present invention provides a method for erecting a support system for the aforementioned extra-large rolling mill stand rotation hoisting device, comprising:

[0016] Step 1: Laying the mill base and second support column. Install the mill base in the mill pit, adjust and accept it, and then erect the second support column on the equipment foundation.

[0017] Step 2: Laying the first support column. Depending on the location of the support point, select the first support column of different height for laying.

[0018] Step 3: Laying the slide rail. After the first and second support columns are laid and their tops are adjusted to the same plane, lay the slide rail on the first and second support columns.

[0019] Furthermore, in step three, a track is laid on the slide.

[0020] In summary, the beneficial technical effects of this invention are as follows: a support system has been designed for the rotating hoisting device of extra-large rolling mill stands, enabling the device to complete lateral movement and hoisting in environments with uneven equipment foundations and many deep pits. This invention has strong versatility, fast operation speed, high efficiency, and can greatly reduce costs. Attached Figure Description

[0021] The above and other objects, features, and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings. The drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention in the equipment foundation;

[0024] Figure 3 This is a schematic diagram of the slide structure in this invention;

[0025] In the diagram, 1. Slide rail, 2. First support column, 3. Second support column, 4. Rolling mill base, 5. First steel billet, 6. Leveling component, 8. Embedded steel plate, 9. Rotary hoisting device, 10. Equipment foundation;

[0026] 11. Vertical stiffener plate, 12. Upper steel plate, 13. Lower steel plate, 14. Bolt connection plate, 15. Rib plate, 16. Rail clamp base, 17. Rail, 31. Upper support, 32. Lower support, 33. Second steel billet, 91. Extra-large rolling mill frame. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0028] Reference Figure 1-2 As shown, this invention discloses a support system for a rotating hoisting device for an extra-large rolling mill stand, comprising a slide rail 1, a first support column 2, a second support column 3, and a rolling mill base 4; the slide rail 1 includes two slide rails; multiple first support columns 2 are arranged at preset intervals to support the middle and first end of the slide rail 1; the second support column 3 is located below the second end of the slide rail 1 to support the second end of the slide rail 1; the rolling mill base 4 is located below the second end of the slide rail 1 and abuts against the second support column 3.

[0029] Reference Figure 3As shown, in this embodiment, the slide rail 1 has bolt connecting plates 14 at both ends. The upper surface of the slide rail 1 is a 30mm upper steel plate 12, the lower surface is a 30mm lower steel plate 13, a 30mm long vertical rib plate 11 is provided in the middle, and 20mm thick rib plates 15 are provided on both sides. The upper surface is provided with a rail clamp base 16 (not shown in the figure). During installation, two slide rails 1 are arranged at the center position of the base of the rotating hoisting device 9. The slide rails 1 are provided with various length specifications. The length setting and arrangement of the slide rails 1 should ensure that the joint position of the slide rail 1 avoids the joint position of the slab by more than 500mm, and the joint of the two slide rails 1 cannot be on the same straight line.

[0030] Reference Figure 1 As shown in the figure, in this embodiment, the first support column 1 is a single-tube support, and its length matches the distance between the slide rail 1 and the support point of the equipment foundation 10 below. It can be seen from the figure that the length of the single-tube support varies, and its specific length is determined based on the distance between the slide rail 1 and the support point of the equipment foundation 10.

[0031] Continue to refer to Figure 1 As shown, the second support column 3 includes an upper support 31 and a lower support 32 connected by upper and lower supports. In this embodiment, the upper support 31 is a double-tube support or a four-tube support, and the lower support 32 is a double-tube support. The upper support 31 and the lower support 32 are connected by a second steel billet 33; the second steel billet 33 is disposed on the lower support 32, and the upper support 31 is disposed on the second steel billet. The upper support 31 is used to support the slide rail, and one end of the second steel billet 33 abuts against the mill base 4.

[0032] Continue to refer to Figure 1 As shown, a first steel billet 5 is also provided at the bottom of the second end of the slide 1; the first steel billet 5 is provided on the second support column 3 or on the support point of the equipment foundation 10 below the slide 1, and the second end of the slide 1 is provided on the first steel billet 5. Specifically, through the setting

[0033] Reference Figure 1-2 As shown, multiple leveling components 6 are also provided below the second end of the slide 1; the leveling components 6 are placed on the support points of the equipment foundation 10 below the second end of the slide 1, and are used to adjust the position of the first steel billet 5 so that when the slide 1 is subjected to force, the pressure is transferred to the first steel billet 5.

[0034] Reference Figure 1 As shown, both the first support column 2 and the second support column 3 have embedded steel plates 8 at their bottoms. In this embodiment, the embedded steel plates 8 are installed during the foundation construction phase. The plane dimensions of the embedded steel plates are 50mm wider than the edge of the support structure's base plate. The embedded steel plates are 20mm thick, and reinforcing bars are welded to the bottom of the steel plates, overlapping with the foundation reinforcing bars to ensure the stability of the embedded steel plates. The arrangement of the embedded steel plates follows these principles: ① For the portion of the slide rail directly on the ground, embedded parts are installed at both ends and the middle of the slide rail to weld the slide rail to the embedded parts. ② Embedded steel plates should be installed at the locations where support columns are placed between the slide rail and the equipment foundation.

[0035] Another aspect of the present invention provides a method for erecting a support system for the aforementioned extra-large rolling mill stand rotation hoisting device, comprising: Step 1, laying the rolling mill base and second support columns, installing the rolling mill base in the rolling mill pit, adjusting and accepting it, and then erecting the second support columns on the equipment foundation; Step 2, laying the first support columns, selecting first support columns of different heights for laying according to different support point positions; Step 3, laying the slide rail, after the first and second support columns are laid and their tops are adjusted to the same plane, laying the slide rail on the first and second support columns. Further, in Step 3, a track is laid on the slide rail.

[0036] The specific implementation method for the erection of the support system for the rotating hoisting device of an extra-large rolling mill stand is as follows:

[0037] Step 1: First, install the double-pipe long supports on the inlet and outlet sides of the rolling mill foundation: The lower part of the double-pipe long support is slanted, and the inclination angle is consistent with the slope of the slag flushing slope in the rolling mill pit. During installation, adjust the support and weld it to the pre-embedded steel plate. Use wedges to fill the gap between the upper surface and the second steel billet to level the second steel billet. After adjustment, spot weld the second steel billet to the wedges and the support.

[0038] Three support platforms are erected on the exit side of the mill foundation using the mill base, double pipe support, and second steel billet to support the upper support structure. The double pipe support is welded to the foundation embedded steel plate. One end of the second steel billet is placed on the mill base, and the other end is placed on the double pipe support. Wedges are inserted between the second steel billet and the upper surface of the support to level the second steel billet. After adjustment, the second steel billet is spot welded to the wedges and the support to fix it.

[0039] Four-tube supports are installed on the second billet. The positioning of the four-tube supports must be precise to ensure that the joint of the second billet is centered on the top plate of the four-tube supports. The joints of the second billets on the inlet and outlet sides are not on the same line and are staggered. Wedges are inserted between the second billet and the upper surface of the supports to level the second billet. After adjustment, the short billet is spot-welded to the wedges and supports, and the support base plate is welded to the second billet.

[0040] A leveling component, which in this embodiment is a leveling frame, is used to support the first steel billet. During installation and adjustment, it must be ensured that the height difference of the upper surface of the first steel billet is no greater than ±10mm.

[0041] Step 2: The longer single-tube support is a Ф610×10mm seamless steel pipe, and the pre-embedded steel plate is welded to the steel pipe; the single-tube support structure is the same for different heights. Due to the different foundation heights at the placement locations, the support heights are different. Some are placed at the slide interface position, and some are aligned with the center of the slide. The single-tube support supports part of the slide, and the other part of the slide is located on the equipment foundation. The single-tube support is used to support directly below the slide and is arranged at equal intervals.

[0042] Step 3: Lay the slide rails. Slide rail 1 has bolted connecting plates 14 at both ends. The upper surface of slide rail 1 is a 30mm upper steel plate 12, the lower surface is a 30mm lower steel plate 13, a 30mm long vertical rib plate 11 is provided in the middle, and 20mm thick rib plates 15 are provided on both sides. The upper surface is provided with a rail clamp base 16. During installation, two slide rails are arranged at the center position of the rotating hoisting device base. The slide rails are available in various length specifications. The length and arrangement of the slide rails should ensure that the slide rail joint position avoids the slab joint position by more than 500mm, and the joints of the two slide rails cannot be on the same straight line. A rail is arranged above the slide rail. The rail is a QU80 rail. The joints need to be staggered from the slide rail joints by more than 500mm, and the joints of the two rails cannot be on the same straight line. Stops are provided on both sides of the rail, with a set every 2m.

[0043] The beneficial technical effects of the above embodiments are as follows: a support system has been designed for the rotating hoisting device of extra-large rolling mill stand, enabling the device to complete lateral movement and hoisting in environments with uneven equipment foundations and many deep pits. The present invention has strong versatility, fast operation speed, high efficiency, and can greatly reduce costs.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A support system for a rotating hoisting device for an extra-large rolling mill stand, characterized in that, include: The slide consists of two tracks; The first support column is provided in multiple units at preset intervals, which are used to support the middle part and the first end of the slide; The second support column is located below the second end of the slide rail and is used to support the second end of the slide rail; The mill base is located below the second end of the slide and abuts against the second support column; The second support column includes an upper support and a lower support connected by upper and lower supports; the upper support and the lower support are connected by a second steel billet; the second steel billet is disposed on the lower support, the upper support is disposed on the second steel billet, the upper support is used to support the slide rail, and one end of the second steel billet abuts against the mill base; A first steel billet is also provided at the bottom of the second end of the slide; the first steel billet is provided on the second support column or on the equipment foundation support point below the slide, and the second end of the slide is provided on the first steel billet; a plurality of leveling components are also provided below the second end of the slide; the leveling components are placed on the equipment foundation support point below the second end of the slide, and are used to adjust the position of the first steel billet so that when the slide is subjected to force, the pressure is transferred to the first steel billet.

2. The support system for the rotating hoisting device of an extra-large rolling mill stand according to claim 1, characterized in that, The first support column is a single tube support, and its length matches the distance between the slide and the support point of the equipment foundation below.

3. The support system for the rotating hoisting device of an extra-large rolling mill stand according to claim 1, characterized in that, The upper support is a double-tube support or a four-tube support, and the lower support is a double-tube support.

4. The support system for the rotating hoisting device of an extra-large rolling mill stand according to claim 1, characterized in that, Both the first support column and the second support column have embedded steel plates at their bottoms.

5. A method for erecting a support system for a rotating hoisting device for an extra-large rolling mill stand as described in any one of claims 1-4, characterized in that, include: Step 1: Laying the mill base and second support column. Install the mill base in the mill pit, adjust and accept it, and then erect the second support column on the equipment foundation. Step 2: Laying the first support column. Depending on the location of the support point, select the first support column of different height for laying. Step 3: Laying the slide rail. After the first and second support columns are laid and their tops are adjusted to the same plane, lay the slide rail on the first and second support columns.

6. The method for erecting the support system for the rotating hoisting device of an extra-large rolling mill stand according to claim 5, characterized in that, In step three, a track is laid on the slide.

Images