Universal rolling mill vertical roll device and vertical roll adjusting and gap eliminating method

Abstract

The invention discloses a vertical roll device of a universal rolling mill and a vertical roll adjusting and clearance eliminating method. A lead screw is hinged to the top end of the vertical roller, a main through hole is formed in the side, corresponding to the lead screw, of a vertical roller yoke, 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 external threads of the lead screw, 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 a hydraulic nut is arranged on the threaded section. And the piston end of the hydraulic nut is arranged corresponding to the vertical roller yoke.

Description

Technical Field

[0001] The invention relates to a universal rolling mill vertical roller device and a vertical roller adjustment and clearance elimination method. 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 the national development plan. 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 universal rolling mill vertical roller device and a vertical roller adjustment and clearance elimination method without the need to disassemble the screw rod assembly as a whole.

[0005] To achieve the above-mentioned purpose, the universal rolling mill vertical roller device 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 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 a hydraulic nut is arranged on the threaded section; the piston end of the hydraulic nut is arranged corresponding to the vertical roller yoke.

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

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

[0013] To achieve the above-mentioned purpose, the vertical roll adjustment and clearance elimination method of the present invention comprises the above-mentioned vertical roll device for a universal rolling mill, and the method comprises the following steps:

[0014] The hydraulic nut is driven so that the piston end of the hydraulic nut is against the vertical roller yoke, thereby utilizing the reaction force to move the threaded sleeve, the lead screw and the main nut toward the hydraulic 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.

[0015] The invention provides a structure for eliminating thread gap at the tail of the screw rod, and the pressure of the hydraulic nut can be conveniently adjusted as needed, which greatly shortens the adjustment time and workload and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0018] Figure 3 for Figure 2 A partial enlarged schematic diagram of .

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

[0020] Figure 5 Schematic diagram of the backlash elimination principle of the present invention. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] 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.

[0023] 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.

[0024] As shown in the figure, the universal rolling mill vertical roller device 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 8, hydraulic nut 9, protective cover 10, etc.; wherein,

[0025] 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.

[0026] 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.

[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 set 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 set on the outer circle of the other side of the threaded sleeve 6, which cooperates 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, the piston of the hydraulic nut 9 moves to the right, 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, it is axially fixed, 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, thereby eliminating the gap between the thread pairs and ensuring the accuracy of the position of the screw rod 2 and the vertical roller 1.

[0028] When the compression amount needs to be adjusted, it can be achieved by simply adjusting the pressure of the hydraulic nut 9.

[0029] 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.

[0030] 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.

[0031] 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 universal rolling mill vertical roll device, 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 a hydraulic nut is arranged on the threaded section; the piston end of the hydraulic nut is arranged corresponding to the vertical roller yoke.

2. The universal rolling mill vertical roll device according to claim 1, characterized in that: A thrust bearing is arranged on the outer sleeve of the threaded sleeve between the piston end of the hydraulic nut and the vertical roller yoke.

3. The universal rolling mill vertical roll device according to claim 1, characterized in that: A protective cover is arranged outside the threaded sleeve.

4. A method for adjusting and eliminating backlash of vertical rolls of a universal rolling mill, characterized in that: The method comprises the universal rolling mill roll verticalizing device as claimed in claim 1, wherein the method comprises the following steps: The hydraulic nut is driven so that the piston end of the hydraulic nut is against the vertical roller yoke, thereby utilizing the reaction force to move the threaded sleeve, the lead screw and the main nut toward the hydraulic 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.

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