A vertical roll adjusting and anti-backlash mechanism and method

Abstract

The application discloses a kind of vertical roll adjustment and clearance elimination mechanism and method.Vertical roll is installed in the sliding slot of vertical roll yoke;Screw rod is hinged in the top end of the vertical roll, main nut is arranged in main through hole, the inner ring of main nut is threaded hole, and the outer thread of screw rod is matched, the outer ring of main nut is worm wheel;Auxiliary through hole is coaxially arranged in the side of main through hole of vertical roll yoke, and the diameter of auxiliary through hole is less than the diameter of main through hole;Threaded sleeve is arranged in the auxiliary through hole and screwed with screw rod;Threaded sleeve is arranged with clearance between outer wall and auxiliary through hole;Pin is arranged on the end face of the end of threaded sleeve adjacent to main nut, pin hole is arranged on the corresponding end face of main nut, and threaded sleeve and main nut are positioned by pin;The other end of threaded sleeve is out of screw hole;Threaded section is arranged on the outer side wall of the end of threaded sleeve located outside through hole, adjusting nut is arranged on the threaded section;Disc spring group is sleeved on the threaded sleeve between adjusting nut and vertical roll yoke.

Description

Technical Field

[0001] This invention relates to a vertical roll adjustment and gap elimination mechanism, and particularly to a universal rolling mill vertical roll adjustment and gap elimination mechanism and method. 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 vertical roller adjustment and backlash elimination mechanism and method that does not require the complete disassembly of the lead screw assembly.

[0005] To achieve the above objectives, the vertical roller adjustment and backlash elimination mechanism of the present invention 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, and 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.

[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 an adjusting nut is provided on the threaded section; a disc spring assembly is provided on the threaded sleeve between the adjusting nut and the vertical roller yoke.

[0011] Furthermore, a thrust bearing is provided on the threaded sleeve between the disc spring assembly and the vertical roller yoke.

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

[0013] Furthermore, the adjusting nut is provided with an anti-loosening structure.

[0014] Furthermore, the anti-loosening structure is provided with a slot penetrating the wall of the adjusting nut on one side, so that the nut wall on that side is divided into two parts; a locking screw hole is provided perpendicular to the slot on the wall of the adjusting nut, and a locking screw is provided in the locking screw hole.

[0015] To achieve the above objectives, the vertical roller adjustment and gap elimination method of the present invention includes the above-mentioned vertical roller adjustment and gap elimination mechanism, and the method includes the following steps:

[0016] Rotating the adjusting nut compresses the spring force generated by the disc spring assembly, causing the adjusting nut to move in the direction of the adjusting nut. This, in turn, moves the threaded sleeve, lead screw, and main nut in the direction of the adjusting nut. After the end face of the main nut contacts the vertical roller yoke, it is axially fixed, thereby causing the lead screw to engage with the left thread of the main nut and the right thread of the threaded sleeve, thus eliminating the backlash of the threaded pair.

[0017] Furthermore, the method also includes the following steps: after adjusting the compression of the disc spring assembly by rotating the adjusting nut according to the required locking force, tighten the locking screw to lock the adjusting nut.

[0018] This invention features a structure at the tail of the lead screw to eliminate thread backlash, allowing for convenient adjustment of the disc spring compression or replacement of the disc spring assembly as needed, greatly reducing adjustment time and workload, and improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0020] Figure 2 for Figure 1 A cross-sectional view.

[0021] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0022] Figure 4 A three-dimensional diagram of the adjusting nut.

[0023] Figure 5 for Figure 4 A cross-sectional view.

[0024] Figure 6 This is a schematic diagram illustrating the gap-elimination principle of the present invention. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] 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.

[0027] 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.

[0028] As shown in the figure, the vertical roller adjustment and backlash elimination mechanism of the present invention includes at least: a vertical roller 1, a lead screw 2, a vertical roller yoke 3, a main nut 4, a positioning pin 5, a threaded sleeve 6, a thrust bearing 7, a pressure sleeve 1 8, a pin 9, a disc spring assembly 10, a pressure sleeve 2 11, a nut 12, a screw 13, and a protective cover 14; wherein...

[0029] 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.

[0030] 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.

[0031] The threaded sleeve 6 is installed in the round hole at the tail of the vertical roller yoke 3. The inner ring of the threaded sleeve 6 on the side connected to the positioning pin 5 has an internal thread section that mates with the lead screw 2. The outer ring on the other side of the threaded sleeve 6 has an external thread section that mates with the nut 12. A narrow groove is machined on the nut 12, so that a locking plate is formed on one side of the nut. By tightening the screw 13, the locking plate is compressed and deformed to achieve the locking effect of the nut.

[0032] A thrust bearing 7, a pressure sleeve 1 8, a pin 9, a disc spring assembly 10, a pressure sleeve 2 11, and a nut 12 are sequentially arranged on the outer ring of the threaded sleeve 6. The other side of the thrust bearing 7 contacts the tail of the vertical roller yoke 3. The elastic force generated by the nut 12 compressing the disc spring assembly 10 moves the pressure sleeve 2 11 and the nut 12 to the left, thereby moving the threaded sleeve 6, the lead screw 2, and the 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. Figure 6 As shown, this eliminates the clearance between the threaded parts, ensuring the accuracy of the positions of the lead screw 2 and the vertical roller 1.

[0033] According to the required locking force, after adjusting the compression of the disc spring assembly 10 by rotating the nut 12, tighten the screw 13 to lock the nut 12.

[0034] When the compression of the disc spring assembly 10 needs to be adjusted, simply open the protective cover 14, loosen the screw 13, and turn the nut 12 as needed. Replacing the disc spring assembly 10 is the same.

[0035] 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.

[0036] 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.

[0037] 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 vertical roller adjustment and backlash elimination mechanism, 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 an adjusting nut is provided on the threaded section; a disc spring assembly is provided on the threaded sleeve between the adjusting nut and the vertical roller yoke. A thrust bearing is provided on the threaded sleeve between the disc spring assembly and the vertical roller yoke; The adjusting nut is equipped with an anti-loosening structure; The anti-loosening structure is provided with a slot on one side of the adjusting nut that penetrates the wall of the adjusting nut, so that the nut wall on that side is divided into two parts; a locking screw hole is provided on the wall of the adjusting nut perpendicular to the slot, and a locking screw is provided in the locking screw hole.

2. The vertical roller adjustment and clearance elimination mechanism as described in claim 1, characterized in that, A protective cover is provided on the outside of the threaded sleeve.

3. A method for adjusting and eliminating gaps in a vertical roller, characterized in that, Including the vertical roller adjustment and backlash elimination mechanism as described in claim 1, the method includes the following steps: Rotating the adjusting nut compresses the spring force generated by the disc spring assembly, causing the adjusting nut to move away from the vertical roller yoke. This, in turn, moves the threaded sleeve, lead screw, and main nut toward the adjusting nut. After the end face of the main nut contacts the vertical roller yoke, it is axially fixed, thereby causing the lead screw to engage with the left thread of the main nut and the right thread of the threaded sleeve, thus eliminating the gap between the threaded parts.

4. The method for adjusting and eliminating gaps in vertical rollers as described in claim 3, characterized in that, The method further includes the following steps: after adjusting the compression of the disc spring assembly by rotating the adjusting nut according to the required locking force, tighten the locking screw to lock the adjusting nut.

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