Vertical roll adjusting and gap eliminating mechanism and method

Abstract

The invention discloses a vertical roll adjusting and clearance eliminating mechanism and method. A vertical roller is mounted in the sliding chute of the vertical roller yoke; a screw rod is hinged to the top end of the vertical roller, a main nut is arranged in the main through hole, an inner ring of the main nut is a threaded hole and is matched with an external thread of the screw rod, and an outer ring of the main nut is a worm wheel; auxiliary through holes are coaxially formed in the sides, away from the main through holes, of the vertical roller yokes, and the diameter of the auxiliary through holes is smaller than that of the main through holes; a threaded sleeve in threaded connection with the lead screw is arranged in the auxiliary through hole. The outer wall of the threaded sleeve and the auxiliary through hole are arranged at intervals. A pin is arranged on the end face of the end, adjacent to the main nut, of the threaded sleeve, a pin hole is formed in the end face corresponding to the main nut, and the threaded sleeve and the main nut are positioned through the pin. The other end of the threaded sleeve extends out of the screw hole; a threaded section is arranged on the outer side wall of the end, located outside the through hole, of the threaded sleeve, and an adjusting nut is arranged on the threaded section. And a disc spring group is sleeved outside the thread bushing between the adjusting nut and the vertical roller yoke.

Description

Technical Field

[0001] The invention relates to a vertical roller adjustment and gap elimination mechanism, in particular to a vertical roller adjustment and gap elimination mechanism and method for a universal rolling mill. Background Art

[0002] Steel sections have the advantages of economical and reasonable cross-sectional shape, large cross-sectional modulus, and good mechanical properties. They are green products encouraged for use in national development plans. On small and medium-sized steel section production lines, short stress line universal rolling mills are the core equipment.

[0003] The vertical roll adjustment of the short stress line universal rolling mill is generally carried out by means of a threaded screw. The gap of the screw thread is eliminated by means of 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 the disc spring compression is readjusted or the disc spring fails and needs to be replaced, all the parts related to the screw assembly need to be disassembled, which is a very large workload and leads to low work efficiency. Summary of the invention

[0004] In view of the above problems, the present invention provides a vertical roller adjustment and backlash elimination mechanism and method without the need to disassemble the screw assembly as a whole.

[0005] To achieve the above-mentioned purpose, the vertical roller adjustment and clearance elimination mechanism of the present invention at least comprises a vertical roller yoke, in which a vertical roller is installed in a slide groove of the vertical roller yoke; a screw rod is hinged at the top end of the vertical roller, a main through hole is arranged on the vertical roller yoke corresponding to one side of the screw rod, a main nut is arranged in the main through hole, the inner ring of the main nut is a threaded hole, which cooperates with the outer thread of the screw rod, the outer ring of the main nut is a worm wheel, and the main nut is rotated by the worm, so as to adjust the position of the vertical roller by axially moving and retracting the screw rod;

[0006] An auxiliary through hole is coaxially arranged on one side of the vertical roller yoke 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 threadedly connected to the screw rod is arranged in the auxiliary through hole; a gap is arranged between the outer wall of the threaded sleeve and the auxiliary through hole;

[0008] A pin is arranged on the end surface of the threaded sleeve adjacent to the main nut, and a pin hole is arranged on the end surface corresponding to the main nut, and the threaded sleeve and the main nut are positioned by the pin;

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

[0010] A threaded section is arranged on the outer side wall of one end of the threaded sleeve outside the through hole, and an adjusting nut is arranged on the threaded section; a disc spring group is arranged on the outer surface of 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 outside the threaded sleeve.

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

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

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

[0016] By turning the adjusting nut, the elastic force generated by the compression disc spring group moves the adjusting nut in the direction of the adjusting nut, thereby moving the threaded sleeve, the lead screw and the 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, so that the lead screw fits with the left thread of the main nut, and the lead screw fits with the right thread of the threaded sleeve, thereby eliminating the gap between the thread pairs.

[0017] Furthermore, the method further comprises the following steps: according to the locking force requirement, after rotating the adjusting nut to adjust the compression amount of the disc spring assembly, tightening the locking screw to achieve the locking of the adjusting nut.

[0018] The present invention provides a structure for eliminating thread gap at the tail of the screw rod, and the compression amount of the disc spring can be easily adjusted or the disc spring group can be replaced as needed, which greatly shortens the adjustment time and workload and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 for Figure 2 A partial enlarged schematic diagram of .

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

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

[0024] Figure 6 It is the principle diagram of the backlash elimination of the present invention. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

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

[0029] The vertical roller 1 is installed in the slide groove of the vertical roller yoke 3. The inner ring of the main nut 4 is a threaded hole, which cooperates with the external thread of the screw rod 2. The outer ring of the main nut 4 is a worm gear. The main nut 4 is rotated by the worm, so that the screw rod 2 can be axially moved and extended to adjust the position of the vertical roller 1.

[0030] One side of the positioning pin 5 is an external thread, which is installed on the end face of the threaded sleeve 6; the other side of the positioning pin 5 is a cylindrical section, which is installed in the pin hole on the main nut 4. During installation, by setting up several groups of positioning pins 5, the main nut 4 and the threaded sleeve 6 are combined together, and the gap between the two can be adjusted to ensure the required thread phase. Both can be installed on the screw rod 2 at the same time, but the main nut 4 and the threaded sleeve 6 cannot rotate relative to each other to avoid the two sections of the thread from getting stuck.

[0031] 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 circle of the threaded sleeve 6 connected to the positioning pin 5, which cooperates with the screw rod 2. An external thread section is provided on the outer circle of the other side of the threaded sleeve 6, which cooperates with the nut 12. A narrow groove is machined on the nut 12, so that a locking sheet is formed on one side of the nut. By tightening the screw 13, the locking sheet is compressed and deformed to achieve the nut locking effect.

[0032] The outer ring of the threaded sleeve 6 is provided with a thrust bearing 7, a press sleeve 1 8, a pin 9, a disc spring assembly 10, a press sleeve 2 11 and a nut 12 in sequence, and the other side of the thrust bearing 7 contacts the tail of the vertical roller yoke 3. The elastic force generated by the disc spring assembly 10 compressed by the nut 12 moves the press sleeve 2 11 and the nut 12 to the left, thereby moving the threaded sleeve 6, the screw rod 2 and the main nut 4 to the left. After the end face of the main nut 4 contacts the vertical roller yoke 3, the axial direction is fixed, and the screw rod 2 fits with the left thread of the main nut 4, and the screw rod 2 fits with the right thread of the threaded sleeve 6, as shown in FIG. Figure 6 As shown, the clearance of the thread pair is eliminated, thereby ensuring the accuracy of the position of the screw rod 2 and the vertical roller 1.

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

[0034] When the compression amount of the disc spring assembly 10 needs to be adjusted, it is only necessary to open the protective cover 14, loosen the screw 13, and rotate the nut 12 as needed. The same is true for replacing the disc spring assembly 10.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0037] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vertical roller adjustment and gap elimination mechanism, characterized in that: At least includes a vertical roller yoke, in which a vertical roller is installed in a slide groove of the vertical roller yoke; a screw rod is hinged at the top of the vertical roller, a main through hole is arranged on the vertical roller yoke corresponding to one side of the screw rod, a main nut is arranged in the main through hole, the inner ring of the main nut is a threaded hole, which cooperates with the outer thread of the screw rod, the outer ring of the main nut is a worm wheel, and the main nut is rotated by the worm, so as to adjust the position of the vertical roller by axially moving and extending the screw rod; An auxiliary through hole is coaxially arranged on one side of the vertical roller yoke far 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 threadedly connected to the screw rod is arranged in the auxiliary through hole; a gap is arranged between the outer wall of the threaded sleeve and the auxiliary through hole; A pin is arranged on the end surface of the threaded sleeve adjacent to the main nut, and a pin hole is arranged on the end surface corresponding to the main nut, and the threaded sleeve and the main nut are positioned by the pin; The other end of the threaded sleeve extends out of the screw hole; A threaded section is arranged on the outer side wall of one end of the threaded sleeve outside the through hole, and an adjusting nut is arranged on the threaded section; a disc spring group is arranged on the outer surface of the threaded sleeve between the adjusting nut and the vertical roller yoke.

2. The vertical roller adjustment and gap elimination mechanism according to claim 1, characterized in that: A thrust bearing is disposed on the outer sleeve of the threaded sleeve between the disc spring assembly and the vertical roller yoke.

3. The vertical roller adjustment and gap elimination mechanism according to claim 1, characterized in that: A protective cover is arranged outside the threaded sleeve.

4. The vertical roller adjustment and gap elimination mechanism according to claim 1, characterized in that: The adjusting nut is provided with an anti-loosening structure.

5. The vertical roller adjustment and gap elimination mechanism according to claim 4, characterized in that: The anti-loosening structure is that a narrow slot penetrating the adjusting nut wall is arranged on one side of the adjusting nut, so that the nut wall on this side is divided into two parts; a locking screw hole is arranged on the adjusting nut wall perpendicular to the narrow slot, and a locking screw is arranged in the locking screw hole.

6. A method for adjusting and eliminating backlash of vertical rollers, characterized in that: The method comprises the vertical roller adjustment and gap elimination mechanism as claimed in claim 1, wherein the method comprises the following steps: By turning the adjusting nut, the elastic force generated by the compression disc spring group moves the adjusting nut in the direction of the adjusting nut, thereby moving the threaded sleeve, the lead screw and the 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, so that the lead screw fits with the left thread of the main nut, and the lead screw fits with the right thread of the threaded sleeve, thereby eliminating the gap between the thread pairs.

7. The vertical roller adjustment and backlash elimination method according to claim 6, characterized in that: The method also includes the following steps: according to the locking force requirements, after rotating the adjusting nut to adjust the compression amount of the disc spring group, tighten the locking screw to achieve the locking of the adjusting nut.

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