A guide device for a hole of a bdlagging mill

Abstract

The application provides a BD rolling mill cross wedge rolling groove guiding device, which comprises an inlet guiding assembly and an outlet guiding assembly. The outlet guiding assembly comprises an outlet bottom plate and outlet side plates fixed at both ends of the outlet bottom plate. The outlet bottom plate and the outlet side plates form an outlet guiding channel. The outlet side plates are fixed with support bosses matched with cross wedge blanks near one side of the outlet guiding channel. Lower pads corresponding to the bottom ends of the cross wedge blanks are arranged in the outlet guiding channel. Upper pads corresponding to the upper ends of the cross wedge blanks are arranged in the outlet guiding channel. The cross wedge blanks enter the inlet guiding channel and then enter a rolling channel between two rollers for rolling. The cross wedge blanks on both sides are guided and supported by the support bosses after rolling. The upper ends are supported and guided by the upper pads, and the lower ends are supported and guided by the lower pads, which can prevent the cross wedge blanks from turning over, ensure product quality and improve work efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of rolling mill equipment, and in particular relates to a skew roll pass guide device for BD rolling mills. Background Technology

[0002] Section steel has excellent cross-sectional mechanical properties. Using section steel to replace traditional ordinary section steel can save 15%-30% of materials, so its application fields are becoming wider and wider. Therefore, the research on special equipment for producing section steel is also gradually deepening. Due to the current limitations of continuous casting technology, the thickness of continuously cast rectangular billets is limited, and the thicker the billet, the more obvious the defects of the continuously cast billet. The skew rolling process can roll and extend the legs of the intermediate billet. Under the same billet thickness, products with higher legs can be rolled.

[0003] The current guide structure at the discharge end of the BD mill's skew rolling is a traditional U-shaped guide structure. When applied to the production process of skew-rolled steel billets, it lacks guidance and support for the sides and upper and lower ends of the skew-rolled steel billets, which often causes the skew-rolled steel billets to tip over after rolling. This not only affects product quality but also hinders the rolling of the next process, resulting in low rolling efficiency. Summary of the Invention

[0004] In view of this, the present invention aims to provide a skew roll pass guide device for BD rolling mills, in order to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A skew roll pass guide device for a BD rolling mill, comprising:

[0007] An inlet guide assembly includes an inlet base plate and inlet side plates fixed at both ends of the base plate. The inlet base plate and the inlet side plates form an inlet guide channel. The inlet guide assembly is installed at the inlet end of the roll.

[0008] An outlet guide assembly includes an outlet base plate and outlet side plates fixed at both ends of the base plate. The outlet base plate and the outlet side plates form an outlet guide channel. A support boss matching the skew-rolled steel billet is fixed on the side of the outlet side plate adjacent to the outlet guide channel.

[0009] The outlet guide channel is provided with a lower pad block corresponding to the bottom end of the skew-rolled steel billet, and the outlet guide channel is provided with an upper pad block corresponding to the upper end of the skew-rolled steel billet.

[0010] Furthermore, the inlet bottom plate and the inlet side plate are in contact with the roll at the end near the roll.

[0011] Furthermore, the outlet bottom plate, outlet side plate, upper pad, and lower pad are in contact with the roll at the end adjacent to the roll.

[0012] Furthermore, a top plate is fixed to the upper end of the two outlet side plates, and the end of the upper pad block away from the roll is installed below the top plate, with the top plate limiting the upper end surface of the upper pad block;

[0013] The upper pad is provided with a tensioning structure, which includes a pull rod, a lever, and a counterweight. The pull rod is connected to the middle position of the upper pad. One end of the lever is hinged to the pull rod, and the other end is connected to the counterweight. The middle of the lever is hinged to a connecting rod, and the connecting rod is fixedly connected to the mill frame.

[0014] Furthermore, a limiting boss is fixedly provided at the upper end of the upper pad block. The limiting boss is located between the top plate and the roll, and the top plate limits the limiting boss.

[0015] The upper end of the upper pad is fixed with a limiting boss two, which is located between the exit bottom plate and the roll, and the exit bottom plate limits the limiting boss two.

[0016] Furthermore, a limiting plate one for limiting the upper pad is fixed at the lower end of the top plate, and a limiting plate two for limiting the lower pad is fixed on the outlet bottom plate.

[0017] Furthermore, the inlet bottom plate, inlet side plate, outlet bottom plate, outlet side plate, upper pad, and lower pad are all structural components made of wear-resistant steel.

[0018] Compared with the prior art, the skew roll pass guide device of the BD rolling mill described in this invention has the following advantages:

[0019] (1) The BD mill skew rolling pass guide device of the present invention allows the skew rolling billet to enter the inlet guide channel and then enter the rolling channel between two rolls for rolling. After the skew rolling billet is rolled, the two sides are guided and supported by the support bosses, the upper end is supported and guided by the upper pad block, and the lower end is supported and guided by the lower pad block. This can prevent the skew rolling billet from tipping over, ensure product quality, and improve work efficiency. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of the guiding device according to an embodiment of the present invention;

[0022] Figure 2As described in the embodiments of the present invention Figure 1 Schematic diagram of the structure at point A in the middle;

[0023] Figure 3 As described in the embodiments of the present invention Figure 1 Schematic diagram of the structure at point B;

[0024] Figure 4 This is a three-dimensional structural diagram of the tensioning structure described in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the outlet side plate according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the upper pad block according to an embodiment of the present invention;

[0027] Figure 7 This is a front view schematic diagram of the outlet guide component according to an embodiment of the present invention;

[0028] Figure 8 This is a schematic cross-sectional view of the outlet guide assembly according to an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Inlet guide assembly; 2. Outlet guide assembly; 3. Tensioning structure; 4. Roll; 5. Skew-rolled billet; 101. Inlet side plate; 102. Inlet bottom plate; 201. Outlet side plate; 202. Outlet bottom plate; 203. Support boss; 204. Top plate; 205. Lower pad block; 206. Upper pad block; 207. Limiting plate one; 208. Limiting plate two; 20501. Limiting boss one; 20601. Limiting boss two. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] like Figures 1 to 8 As shown, a skew roll pass guide device for a BD rolling mill includes:

[0036] The inlet guide assembly 1 includes an inlet base plate 102 and inlet side plates 101 fixed at both ends of the base plate. The inlet base plate 102 and the inlet side plates 101 form an inlet guide channel. The inlet guide assembly 1 is installed at the inlet end of the roll 4.

[0037] The outlet guide assembly 2 includes an outlet base plate 202 and outlet side plates 201 fixed at both ends of the base plate. The outlet base plate 202 and the outlet side plates 201 form an outlet guide channel. A support boss 203 matching the skew-rolled steel billet 5 is fixed on the side of the outlet side plate 201 adjacent to the outlet guide channel.

[0038] The outlet guide channel is provided with a lower pad 205 corresponding to the bottom end of the skew-rolled steel billet 5, and an upper pad 206 corresponding to the upper end of the skew-rolled steel billet 5.

[0039] The inlet bottom plate 102 and the inlet side plate 101 are attached to the end of the roller 4 near the roller 4.

[0040] The outlet bottom plate 202, outlet side plate 201, upper pad 206, and lower pad 205 are attached to the end of the roll 4 near the roll 4.

[0041] A top plate 204 is fixed to the upper end of the two outlet side plates 201. The end of the upper pad 206 away from the roll 4 is installed below the top plate 204. The top plate 204 limits the upper end surface of the upper pad 206.

[0042] The upper pad 206 is provided with a tensioning structure 3, which includes a pull rod, a lever, and a counterweight. The pull rod is connected to the middle position of the upper pad 206. One end of the lever is hinged to the pull rod, and the other end is connected to the counterweight. The middle of the lever is hinged to a connecting rod, and the connecting rod is fixedly connected to the mill frame. The upper surface of the upper pad 206 near the rolling roll is in contact with the upper rolling roll 4, and the upper surface of the upper pad 206 away from the rolling roll is in contact with the lower surface of the top plate 204. Under the action of the counterweight, an upward force is applied to the upper pad 206, ensuring the contact effect of the upper pad 206.

[0043] The lower end face of the lower pad 205 near the rolling roller is in contact with the lower roller 4, and the lower end face of the lower pad 205 away from the rolling roller is in contact with the upper end face of the exit base plate 202. The adhesion effect is ensured by the gravity of the lower pad 205.

[0044] The lower pad 205, the upper pad 206 and the outlet guide assembly 2 are not fixedly connected, which serves to prevent scratching the roll 4 and the skewed steel billet 5.

[0045] The upper end of the upper pad 206 is fixed with a limiting boss 20501. The limiting boss 20501 is located between the top plate 204 and the roll 4. The top plate 204 limits the limiting boss 20501. The top plate 204 limits the limiting boss 20501 in the direction of the exit guide channel, so that the end of the upper pad 206 near the roll 4 is in contact with the roll 4.

[0046] A limiting boss 20601 is fixedly provided on the upper end of the upper pad block 206. The limiting boss 20601 is located between the exit bottom plate 202 and the roll 4, and the exit bottom plate 202 limits the limiting boss 20601. The top plate 204 limits the limiting boss 20601 along the direction of the exit guide channel, so that the end of the lower pad block 205 near the roll 4 is in contact with the roll 4.

[0047] The lower end of the top plate 204 is fixed with a limiting plate 207 that limits the upper pad 206. The limiting plate 207 limits the upper pad 206 along the axial direction of the roll 4 to prevent the lower pad 205 from moving upward along the axial direction of the roll 4.

[0048] A second limiting plate 208 is fixed on the outlet base plate 202 to limit the lower pad 205. The second limiting plate 208 limits the lower pad 205 along the axial direction of the roll 4 to prevent the lower pad 205 from moving upward along the axial direction of the roll 4.

[0049] The inlet bottom plate 102, inlet side plate 101, outlet bottom plate 202, outlet side plate 201, upper pad 206, and lower pad 205 are all structural components made of wear-resistant steel.

[0050] Work process:

[0051] The skew-rolled steel billet 5 enters the inlet guide channel and then enters the rolling channel between the two rolls 4 for rolling. After rolling, the skew-rolled steel billet 5 is guided and supported by the support bosses 203 on both sides, supported and guided by the upper pad block 206 at the upper end, and supported and guided by the lower pad block 205 at the lower end. This can prevent the skew-rolled steel billet 5 from tipping over, ensure product quality, and improve work efficiency.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A guide device for a skew roll pass of a BD rolling mill, characterized in that, include: An inlet guide assembly (1) includes an inlet base plate (102) and inlet side plates (101) fixed at both ends of the inlet base plate (102). The inlet base plate (102) and the inlet side plates (101) form an inlet guide channel. The inlet guide assembly (1) is installed at the inlet end of the roll (4). The outlet guide assembly (2) includes an outlet base plate (202) and outlet side plates (201) fixed at both ends of the outlet base plate (202). The outlet base plate (202) and the outlet side plates (201) form an outlet guide channel. A support boss (203) matching the steel billet is fixed on the side of the outlet side plate (201) adjacent to the outlet guide channel. The outlet guide channel is provided with a lower pad (205) corresponding to the bottom end of the skew-rolled steel billet (5), and the outlet guide channel is provided with an upper pad (206) corresponding to the upper end of the skew-rolled steel billet (5); A top plate (204) is fixed to the upper end of the two outlet side plates (201), and the upper pad (206) is installed below the top plate (204) at the end away from the roll (4). The top plate (204) limits the upper end face of the upper pad (206); The upper pad (206) is provided with a tensioning structure (3), which includes a pull rod, a lever, and a counterweight. The pull rod is connected to the middle position of the upper pad (206). One end of the lever is hinged to the pull rod, and the other end is connected to the counterweight. The middle of the lever is hinged to a connecting rod, and the connecting rod is fixedly connected to the frame of the rolling mill. The upper end of the upper pad (206) is fixed with a limiting boss (20601), the limiting boss (20601) is located between the top plate (204) and the roll (4), and the top plate (204) limits the limiting boss (20601); The lower pad (205) is fixed with a limiting boss (20501) at its lower end. The limiting boss (20501) is located between the exit bottom plate (202) and the roll (4). The exit bottom plate (202) limits the limiting boss (20501). The top plate (204) is fixedly provided with a limiting plate one (207) for limiting the upper pad (206), and the bottom plate (202) is fixedly provided with a limiting plate two (208) for limiting the lower pad (205).

2. The skew roll pass guide device for a BD rolling mill according to claim 1, characterized in that: The inlet bottom plate (102) and the inlet side plate (101) are attached to the end of the roll (4) near the roll (4).

3. The skew roll pass guide device for a BD rolling mill according to claim 1, characterized in that: The outlet bottom plate (202), outlet side plate (201), upper pad (206), and lower pad (205) are attached to the end of the roll (4) near the roll (4).

4. The skew roll pass guide device for a BD rolling mill according to claim 1, characterized in that: The inlet bottom plate (102), inlet side plate (101), outlet bottom plate (202), outlet side plate (201), upper pad (206), and lower pad (205) are all structural components made of wear-resistant steel.

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