A universal mill vertical roll device and vertical roll adjustment gap elimination method

Abstract

The utility model discloses a kind of universal rolling mill vertical roll device and vertical roll adjustment clearance elimination method.Screw rod is hinged in vertical roll top end, main through hole is set on the side of vertical roll yoke corresponding screw rod, main nut is set in the main through hole, the inner ring of main nut is screw hole, cooperate with the outer thread of screw rod, the outer ring of main nut is worm wheel;Auxiliary through hole is coaxially set on the side of vertical roll yoke far from main through hole, the diameter of auxiliary through hole is less than the diameter of main through hole;Threaded sleeve is set in auxiliary through hole and is screwed with screw rod;Threaded sleeve outer wall is set with clearance between auxiliary through hole;The end face of the threaded sleeve and the adjacent end of main nut is set with pin, pin hole is set on the end face corresponding to main nut, the threaded sleeve and main nut are positioned by pin;The other end of the threaded sleeve is out of screw hole;Threaded section is set on the outer lateral wall of the threaded sleeve at the end outside through hole, hydraulic nut is set on the threaded section;The piston end of the hydraulic nut is set corresponding vertical roll yoke.

Description

Technical Field

[0001] This invention relates to a universal rolling mill vertical roll device and a method for adjusting and eliminating gaps in the vertical roll. Background Technology

[0002] Section steel has advantages such as economical and reasonable cross-sectional shape, large section modulus, and good mechanical properties. It is a green product encouraged by the national development plan. In small and medium-sized section steel production lines, the short stress line universal rolling mill is the core equipment.

[0003] The vertical roll adjustment of short stress line universal rolling mills is generally carried out by using a threaded screw. The backlash of the screw thread is eliminated by a disc spring and a secondary nut. However, in the traditional structure, the position of the secondary nut and the compression of the disc spring are difficult to adjust after assembly. When readjusting the compression of the disc spring or when the disc spring fails and needs to be replaced, all the relevant parts of the screw assembly need to be disassembled, which is a lot of work and leads to low work efficiency. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a universal rolling mill vertical roll device and a method for adjusting and eliminating gaps in the vertical roll that does not require the overall disassembly of the lead screw assembly.

[0005] To achieve the above objectives, the universal mill vertical roll device of the present invention includes at least a vertical roll yoke, in which a vertical roll is installed in a groove of the vertical roll yoke; a lead screw is hinged to the top of the vertical roll, and a main through hole is provided on the vertical roll yoke on the side corresponding to the lead screw. A main nut is provided in the main through hole, the inner ring of the main nut is a threaded hole that engages with the external thread of the lead screw, and the outer ring of the main nut is a worm gear. By rotating the main nut through the worm gear, the position of the vertical roll is adjusted by axially moving and extending the lead screw.

[0006] The vertical roller yoke is provided with an auxiliary through hole on the side far from the main through hole, and the diameter of the auxiliary through hole is smaller than the diameter of the main through hole.

[0007] A threaded sleeve that is screwed to the lead screw is provided in the auxiliary through hole; the outer wall of the threaded sleeve is provided with a gap between it and the auxiliary through hole.

[0008] A pin is provided on the end face of the threaded sleeve adjacent to the main nut, and a pin hole is provided on the corresponding end face of the main nut. The threaded sleeve and the main nut are positioned by the pin.

[0009] The other end of the threaded sleeve extends out of the threaded hole;

[0010] A threaded section is provided on the outer wall of the end of the threaded sleeve located outside the through hole, and a hydraulic nut is provided on the threaded section; the piston end of the hydraulic nut is provided corresponding to the vertical roller yoke.

[0011] Furthermore, a thrust bearing is fitted over the threaded sleeve between the piston end of the hydraulic nut and the vertical roller yoke.

[0012] Furthermore, a protective cover is provided on the outside of the threaded sleeve.

[0013] To achieve the above objectives, the vertical roll adjustment and clearance elimination method of the present invention includes the above-mentioned universal mill vertical roll device, and the method includes the following steps:

[0014] The hydraulic nut is driven so that its piston end abuts against the vertical roller yoke. The reaction force then moves the threaded sleeve, lead screw, and main nut toward the hydraulic nut. After the end face of the main nut contacts the vertical roller yoke, it is axially fixed, which causes the lead screw to engage with the left thread of the main nut and with the right thread of the threaded sleeve, thus eliminating the backlash of the threaded pair.

[0015] This invention features a structure at the tail of the lead screw to eliminate thread backlash, which allows for convenient adjustment of the hydraulic nut pressure as needed, greatly reducing adjustment time and workload, and improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0017] Figure 2 for Figure 1 A cross-sectional view.

[0018] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0019] Figure 4 This is a schematic diagram of the hydraulic nut.

[0020] Figure 5 Schematic diagram of the gap elimination principle of this invention. Detailed Implementation

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this invention.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" 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.

[0024] As shown in the figure, the universal rolling mill vertical roll device of the present invention includes at least: vertical roll 1, lead screw 2, vertical roll yoke 3, main nut 4, locating pin 5, threaded sleeve 6, thrust bearing 7, pressure sleeve 8, hydraulic nut 9, protective cover 10, etc.; wherein...

[0025] The vertical roller 1 is installed in the groove of the vertical roller yoke 3. The inner ring of the main nut 4 is a threaded hole that mates with the external thread of the lead screw 2. The outer ring of the main nut 4 is a worm gear. By rotating the main nut 4 through the worm gear, the lead screw 2 is moved axially to adjust the position of the vertical roller 1.

[0026] One side of the locating pin 5 has an external thread and is installed on the end face of the threaded sleeve 6; the other side of the locating pin 5 is a cylindrical section and is installed in the pin hole on the main nut 4. During installation, by setting several sets of locating pins 5, the main nut 4 and the threaded sleeve 6 are combined together. The gap between the two can be adjusted to ensure the required thread phase. Both can be installed on the lead screw 2 at the same time, but the main nut 4 and the threaded sleeve 6 cannot rotate relative to each other to avoid jamming of the two thread sections.

[0027] The threaded sleeve 6 is installed in the round hole at the tail of the vertical roller yoke 3. An internal thread section is provided on the inner ring of the threaded sleeve 6 on one side of the locating pin 5, which mates with the lead screw 2. An external thread section is provided on the outer ring of the other side of the threaded sleeve 6, which mates with the hydraulic nut 9. The other side of the thrust bearing 7 contacts the tail of the vertical roller yoke 3. After the hydraulic nut 9 is pressurized, its piston moves to the right, thereby moving the threaded sleeve 6, lead screw 2, and main nut 4 to the left. After the end face of the main nut 4 contacts the vertical roller yoke 3, it is axially fixed. The lead screw 2 engages with the left thread of the main nut 4, and the lead screw 2 engages with the right thread of the threaded sleeve 6, thus eliminating the clearance between the threaded parts and ensuring the accuracy of the positions of the lead screw 2 and the vertical roller 1.

[0028] When the compression needs to be adjusted, simply adjust the pressure of the hydraulic nut 9.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0031] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A universal rolling mill vertical roll assembly, characterized in that, It includes at least a vertical roller yoke, in which a vertical roller is installed in a groove; a lead screw is hinged to the top of the vertical roller, and a main through hole is provided on the vertical roller yoke on the side corresponding to the lead screw. A main nut is provided in the main through hole. The inner ring of the main nut is a threaded hole that engages with the external thread of the lead screw. The outer ring of the main nut is a worm gear. By rotating the main nut through the worm gear, the lead screw is moved laterally and extended to adjust the position of the vertical roller. The vertical roller yoke is coaxially provided with an auxiliary through hole on the side away from the main through hole, and the diameter of the auxiliary through hole is smaller than the diameter of the main through hole; A threaded sleeve that is screwed to the lead screw is provided in the auxiliary through hole; the outer wall of the threaded sleeve is provided with a gap between it and the auxiliary through hole. A pin is provided on the end face of the threaded sleeve adjacent to the main nut, and a pin hole is provided on the corresponding end face of the main nut. The threaded sleeve and the main nut are positioned by the pin. The other end of the threaded sleeve extends out of the auxiliary through hole; A threaded section is provided on the outer wall of the end of the threaded sleeve located outside the auxiliary through hole, and a hydraulic nut is provided on the threaded section; the piston end of the hydraulic nut is provided corresponding to the vertical roller yoke. A thrust bearing is fitted over the threaded sleeve between the piston end of the hydraulic nut and the vertical roller yoke. A protective cover is provided on the outside of the threaded sleeve.

2. A method for adjusting and eliminating gaps in the vertical rolls of a universal rolling mill, characterized in that, The method, including the universal rolling mill vertical roll assembly as described in claim 1, comprises the following steps: The hydraulic nut is driven so that its piston end abuts against the vertical roller yoke. The reaction force then moves the threaded sleeve, lead screw, and main nut toward the hydraulic nut. After the end face of the main nut contacts the vertical roller yoke, it is axially fixed, which causes the lead screw to engage with the left thread of the main nut and with the right thread of the threaded sleeve, thus eliminating the backlash of the threaded pair.

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