Working roller axial moving device and rolling mill

Abstract

The utility model provides a working roller axial moving device and a rolling mill, comprising a hydraulic sleeve connected with the rolling mill; the piston is mounted on the inner side of the hydraulic sleeve; the sliding sleeve is installed on the outer side of the hydraulic sleeve, the sliding sleeve is connected with the piston, and a first boss is arranged on the outer side of the sliding sleeve; the rotating sleeve is rotationally connected to the outer side of the sliding sleeve, a second boss is arranged on the rotating sleeve, and a driving groove is formed between the second boss and the first boss; and the driving assembly is used for driving the rotating sleeve to rotate. The mounting seat has the advantages that the mounting seat is compact in structure and can be mounted on the operation side of the rolling mill, the second boss can be matched with the first boss to limit the driving boss by rotating the rotating sleeve and moving the second boss, and the mounting seat can be conveniently detached and maintained in the later period.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel manufacturing, in particular to a working roll axial shifting device and a rolling mill. Background Art

[0002] Hot-rolled strip is an important raw material in the steel processing industry, and the market has increasingly stringent requirements on its plate shape accuracy. The application of work roll axial shifting technology can significantly improve the plate shape accuracy, extend the online rolling time of the work roll, reduce the number of roll changes, and improve work efficiency. Therefore, the work roll axial shifting device has become a very important component of the hot-rolled strip mill.

[0003] The existing work roll axial shifting device is a complex, integrally assembled structure that is difficult to disassemble and maintain. Most guide slides are open, resulting in poor lubrication and increased wear. Frequent slide replacements are necessary, leading to a significant maintenance workload. Due to its large size, it can only be installed on the transmission side of the mill frame, limiting visibility from the transmission side and making it difficult to observe the operating status of monitoring equipment. Furthermore, the adjacent transmission side is obstructed by the transmission coupling and coupling clamping device, further complicating maintenance of the axial shifting device. Disassembly of the roll mounting base requires the axial shifting device to be performed first, resulting in low efficiency. Utility Model Content

[0004] In view of this, the present invention aims to provide a working roll axial shifting device and a rolling mill, in order to solve at least one of the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] The first aspect of the present invention provides a working roll axial shifting device, comprising:

[0007] a hydraulic sleeve connected to the rolling mill;

[0008] A piston, the piston being mounted on the inner side of the hydraulic sleeve;

[0009] A sliding sleeve, the sliding sleeve being mounted on the outside of the hydraulic sleeve, the sliding sleeve being connected to the piston, and a first boss being provided on the outside of the sliding sleeve;

[0010] a rotating sleeve, the rotating sleeve being rotatably connected to the outer side of the sliding sleeve, the rotating sleeve being provided with a second boss, and a driving groove being formed between the second boss and the first boss;

[0011] A driving assembly is used to drive the rotating sleeve to rotate.

[0012] Furthermore, one end of the hydraulic sleeve away from the piston is in communication with the hydraulic device;

[0013] A first annular sealing groove is formed on the outer side wall of the piston, a first sealing ring is provided in the first annular sealing groove, and a connecting rod is provided at the other end of the piston, and the connecting rod is connected to the sliding sleeve.

[0014] Furthermore, a flange is provided at one end of the sliding sleeve away from the piston, and the flange is fixedly connected to the sliding sleeve by bolts. A threaded rod is fixed at one end of the connecting rod away from the piston, and the diameter of the threaded rod is smaller than that of the connecting rod. The threaded rod passes through the flange and is threadedly connected to the threaded sleeve.

[0015] A collar is provided between the flange and the connecting rod, and the collar is located outside the threaded rod.

[0016] Furthermore, a sealing ring is fixedly provided at one end of the hydraulic sleeve adjacent to the piston, the inner diameter of the sealing ring matches the diameter of the connecting rod, and the connecting rod is installed on the inner side of the sealing ring;

[0017] A second annular sealing groove is formed on the inner side wall of the sealing ring, and a second sealing ring is provided in the second annular sealing groove;

[0018] A third annular sealing groove is formed on the outer side wall of the sealing ring. A third sealing ring is provided in the third annular sealing groove. The third sealing ring is located between the inner side wall of the hydraulic sleeve and the outer side wall of the sealing ring.

[0019] Furthermore, a first annular boss is fixedly provided on the outer side of one end of the sliding sleeve away from the piston, and the rotating sleeve is installed between the first annular boss and the flange;

[0020] A gasket is provided between the rotating sleeve and the flange;

[0021] Annular mounting grooves are provided at both ends of the inner side of the rotating sleeve, a rotating sleeve is provided in the annular mounting groove, slip rings are fixedly provided at both ends of the rotating sleeve, the slip rings are fixedly connected to the rotating sleeve by bolts, and the slip rings press the rotating sleeve tightly.

[0022] Furthermore, a linear sleeve is provided between the sliding sleeve and the hydraulic sleeve, and a second annular boss is provided on the inner side of the end of the sliding sleeve adjacent to the piston, and the second annular boss limits one end of the linear sleeve, and a retaining ring is fixed to the end of the sliding sleeve away from the second annular boss, and the retaining ring is connected to the sliding sleeve by bolts, and the retaining ring limits the end of the linear sleeve away from the second annular boss.

[0023] Furthermore, there are two linear sleeves, a support ring is provided between the two linear sleeves, the outer diameter of the support ring matches the inner diameter of the sliding sleeve, the inner diameter of the support ring is larger than the outer diameter of the hydraulic sleeve, a lubricating oil hole is provided on the side wall of the support ring, and a connecting hole corresponding to the lubricating oil hole is opened on the sliding sleeve;

[0024] A fourth sealing ring is provided between the inner side wall of the linear sleeve adjacent to the second boss and the outer side wall of the hydraulic sleeve;

[0025] A fourth sealing ring is provided between the inner side of the retaining ring and the outer side wall of the hydraulic sleeve.

[0026] Furthermore, the sliding sleeve is provided with a displacement sensor corresponding to the hydraulic sleeve;

[0027] The driving assembly is a hydraulic cylinder, a housing of the hydraulic cylinder is hinged to a sliding sleeve, and an output shaft of the hydraulic cylinder is hinged to a rotating sleeve.

[0028] A second aspect of the present invention provides a rolling mill, comprising a frame, a mounting seat, and a roll, wherein both ends of the roll are rotatably connected to the mounting seat, the mounting seat being movably connected to the frame along the axis of the roll, the mounting seat being provided with a drive boss, the drive boss being located inside a drive groove of an axial shifting device of the work roll;

[0029] The working roll axial shifting device is the working roll axial shifting device described in the first aspect, and the hydraulic sleeve is fixedly connected to the frame.

[0030] Furthermore, the number of the rolls is two, namely an upper roll and a lower roll, and each roll is provided with two working roll axial shifting devices, and the two working roll axial shifting devices are symmetrically distributed on both sides of the mounting seat along the axis of the roll;

[0031] Two first guide plates are fixed on the outer wall of the sliding sleeve, and a guide channel is formed between the two first guide plates. The guide channel is arranged along the axis direction of the roller. A second guide plate is fixed on the frame, and the second guide plate is located on the inner side of the wire channel.

[0032] Compared with the prior art, the work roll axial shifting device and rolling mill described in the present invention have the following beneficial effects:

[0033] (1) The utility model discloses an axial shifting device for a working roll. The device has a compact structure and can be installed on the operating side of a rolling mill. By rotating the rotating sleeve, the movement of the second boss can cooperate with the first boss to complete the positioning of the driving boss, which is convenient for the subsequent disassembly and maintenance of the mounting seat.

[0034] (2) The utility model discloses a working roll axial shifting device, wherein the hydraulic sleeve, piston and linear sleeve of the device adopt a built-in structure, so that the cylinder rod and seal are protected from the corrosion of the mill cooling water and iron oxide scale, thereby improving the service life of the hydraulic cylinder of the shifting roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of the device in use according to an embodiment of the present utility model;

[0037] Figure 2 For the embodiment of the present utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0038] Figure 3 For the embodiment of the present utility model Figure 1 Schematic diagram of the structure at B in the middle;

[0039] Figure 4 This is a schematic cross-sectional view of the device in use according to an embodiment of the present utility model;

[0040] Figure 5 The embodiment of the present utility model Figure 4 Schematic diagram of the structure at C in the middle;

[0041] Figure 6 For the embodiment of the present utility model Figure 5 Schematic diagram of the structure at D in the middle;

[0042] Figure 7 This is a schematic diagram of the three-dimensional structure of the sliding sleeve according to an embodiment of the present utility model;

[0043] Figure 8 This is a schematic diagram of the cross-sectional structure of the device according to an embodiment of the present utility model;

[0044] Figure 9 For the embodiment of the present utility model Figure 8 Schematic diagram of the structure at E in the middle.

[0045] Description of reference numerals:

[0046] 1. Roller; 2. Frame; 3. Mounting seat; 4. Hydraulic sleeve; 5. Piston; 6. Sliding sleeve; 7. Rotating sleeve; 8. Linear sleeve; 9. Gasket; 10. Flange; 11. Retaining ring; 12. Hydraulic cylinder; 13. Sleeve ring; 14. Threaded sleeve; 15. Displacement sensor; 16. Sealing ring; 17. Support ring; 18. Fourth sealing ring; 201. Second guide plate; 301. Drive boss; 501. Connecting rod; 502. Threaded rod; 601. First boss; 602. First annular boss; 603. First guide plate; 604. Second annular boss; 701. Rotating sleeve; 702. Slip ring; 703. Second boss. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0049] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0050] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0051] like Figures 1-9 As shown, a working roll axial shifting device includes:

[0052] Hydraulic sleeve 4, which is connected to the rolling mill;

[0053] Piston 5, which is installed on the inner side of the hydraulic sleeve 4;

[0054] The sliding sleeve 6 is installed on the outside of the hydraulic sleeve 4, the sliding sleeve 6 is connected to the piston 5, and a first boss 601 is provided on the outside of the sliding sleeve 6;

[0055] The rotating sleeve 7 is rotatably connected to the outer side of the sliding sleeve 6 and is provided with a second boss 703. A driving groove is formed between the second boss 703 and the first boss 601.

[0056] The driving assembly is used to drive the rotating sleeve 7 to rotate.

[0057] The end of the hydraulic sleeve 4, away from the piston 5, is connected to the hydraulic device. A first annular sealing groove is defined on the outer wall of the piston 5, within which a first sealing ring is located. A connecting rod 501 is provided at the other end of the piston 5, which is connected to the sliding sleeve 6. The first sealing ring improves sealing performance and prevents leakage of hydraulic oil.

[0058] A flange 10 is provided at the end of the sliding sleeve 6 away from the piston 5. Flange 10 is fixedly connected to the sliding sleeve 6 via bolts. A threaded rod 502 is fixed to the end of the connecting rod 501 away from the piston 5. The diameter of threaded rod 502 is smaller than that of connecting rod 501. Threaded rod 502 passes through flange 10 and is threadedly connected to threaded sleeve 14. A collar 13 is provided between flange 10 and connecting rod 501, located on the outside of threaded rod 502. The threaded connection of threaded sleeve 14 facilitates disassembly and improves maintenance efficiency.

[0059] A sealing ring 16 is fixedly provided at one end of the hydraulic sleeve 4 adjacent to the piston 5. The inner diameter of the sealing ring 16 matches the diameter of the connecting rod 501, and the connecting rod 501 is installed on the inner side of the sealing ring 16; a second annular sealing groove is opened on the inner side wall of the sealing ring 16, and a second sealing ring is arranged in the second annular sealing groove; a third annular sealing groove is opened on the outer side wall of the sealing ring 16, and a third sealing ring is arranged in the third annular sealing groove. The third sealing ring is located between the inner side wall of the hydraulic sleeve 4 and the outer side wall of the sealing ring 16. The second sealing ring and the third sealing ring improve the sealing performance of the sealing ring 16 to prevent leakage of hydraulic oil.

[0060] A first annular boss 602 is fixedly provided on the outer side of the end of the sliding sleeve 6 away from the piston 5, and the rotating sleeve 7 is installed between the first annular boss 602 and the flange 10; a gasket 9 is provided between the rotating sleeve 7 and the flange 10; the first annular boss 602 and the gasket 9 respectively limit the two ends of the sliding sleeve 6. Annular mounting grooves are provided at both ends of the inner side of the rotating sleeve 7, and a rotating sleeve 701 is provided in the annular mounting grooves. Slip rings 702 are fixedly provided at both ends of the rotating sleeve 7. The slip rings 702 are fixedly connected to the rotating sleeve 7 by bolts, and the slip rings 702 press the rotating sleeve 701. The rotating sleeve 701 and the slip ring 702 are both structural components made of wear-resistant materials, preferably copper or wear-resistant steel. The rotating sleeve 701 and the slip ring 702 prevent the rotating sleeve 7 from being scratched, and are easy to install, facilitating subsequent maintenance and upkeep.

[0061] A linear sleeve 8 is provided between the sliding sleeve 6 and the hydraulic sleeve 4. A second annular boss 604 is provided on the inner side of the end of the sliding sleeve 6 adjacent to the piston 5. This boss 604 restrains one end of the linear sleeve 8. A retaining ring 11 is fixed to the end of the sliding sleeve 6 distal to the second boss 604. This retaining ring 11 is bolted to the sliding sleeve 6 and restrains the end of the linear sleeve 8 distal to the second boss 604. There are two linear sleeves 8, with a support ring 17 provided between them. The outer diameter of the support ring 17 matches the inner diameter of the sliding sleeve 6, and the inner diameter of the support ring 17 is larger than the outer diameter of the hydraulic sleeve 4. A lubricating oil hole is provided on the sidewall of the support ring 17, and a connecting hole corresponding to the lubricating oil hole is provided on the sliding sleeve 6. During use, lubricating oil is added through the connecting hole and the lubricating oil hole to reduce sliding resistance and prevent scratching of the hydraulic sleeve 4. The linear sleeve 8 is a structural member made of copper or wear-resistant steel. The arrangement of the linear sleeve 8 reduces the wear of the sliding sleeve 6 and is installed through the retaining ring 11 for easy replacement and maintenance in the future.

[0062] A fourth sealing ring 18 is provided between the inner wall of the linear sleeve 8 adjacent to the second boss 703 and the outer wall of the hydraulic sleeve 4; a fourth sealing ring 18 is provided between the inner side of the retaining ring 11 and the outer wall of the hydraulic sleeve 4. The fourth sealing ring 18 improves the sealing performance and prevents lubricating oil leakage.

[0063] A displacement sensor 15 corresponding to the hydraulic sleeve 4 is provided on the sliding sleeve 6; the displacement sensor 15 is an electromagnetic displacement sensor 15, and a mounting hole corresponding to the position of the displacement sensor 15 is opened on the sealing ring 16, and an induction magnet of the displacement sensor 15 is installed at the entrance of the mounting hole; the displacement sensor 15 can accurately detect the movement distance of the piston 5, that is, the axial movement of the upper roller 1; the displacement sensor 15 can also be a laser displacement sensor 15.

[0064] The driving component is a hydraulic cylinder 12, the housing of the hydraulic cylinder 12 is hinged to the sliding sleeve 6, and the output shaft of the hydraulic cylinder 12 is hinged to the rotating sleeve 7. The driving component can also be a pneumatic cylinder or an electric cylinder.

[0065] A rolling mill includes a frame 2, a mounting seat 3, and a roll 1. Both ends of the roll 1 are rotatably connected to the mounting seat 3. The mounting seat 3 is movably connected to the frame 2 along the axial direction of the roll 1. A driving boss 301 is provided on the mounting seat 3. The driving boss 301 is located on the inner side of the driving groove of the working roll axial shifting device; the working roll axial shifting device is the above-mentioned working roll axial shifting device, and the hydraulic sleeve 4 is fixedly connected to the frame 2.

[0066] There are two rolling rollers 1, namely the upper rolling roller 1 and the lower rolling roller 1. Each rolling roller 1 is provided with two working roller axial shifting devices, and the two working roller axial shifting devices are symmetrically distributed on both sides of the mounting seat 3 along the axis of the rolling roller 1; two first guide plates 603 are fixedly provided on the outer wall of the sliding sleeve 6, and a guide channel is formed between the two first guide plates 603, and the guide channel is arranged along the axial direction of the rolling roller 1; a second guide plate 201 is fixedly provided on the frame 2, and the second guide plate 201 is located on the inner side of the wire channel. The second guide plate 201 guides the first guide plate 603 to prevent relative rotation between the sliding sleeve 6 and the hydraulic sleeve 4, so that the first boss 601 always corresponds to the position of the driving boss 301.

[0067] Working process:

[0068] When this solution is implemented, the axial adjustment process of the roller 1 is as follows: the output shaft of the hydraulic cylinder 12 is extended, driving the rotating sleeve 7 to rotate, the second boss 703 corresponds to the first boss 601, and a driving groove is formed between the second boss 703 and the first boss 601. The driving boss 301 is located on the inner side of the driving groove. By adjusting the pressure and volume of the hydraulic oil in the hydraulic sleeve 4, the driving piston 5 moves and then drives the mounting seat 3 of the roller 1 to move. When it is necessary to remove the mounting seat 3 to maintain the roller 1, the output shaft of the hydraulic cylinder 12 is extended and retracted, and the second boss 703 does not correspond to the first boss 601. At this time, the installation can be moved axially for easy disassembly.

[0069] The device has a compact structure and can be installed on the operating side of the rolling mill. The hydraulic sleeve 4, piston 5 and linear sleeve 8 adopt a built-in structure to protect the cylinder rod and seal from the corrosion of the rolling mill cooling water and iron oxide scale, thereby improving the service life of the roller shifting hydraulic cylinder 12. By rotating the rotating sleeve 7, the movement of the second boss 703 can cooperate with the first boss 601 to complete the limitation of the driving boss 301, which is convenient for the later disassembly and maintenance of the mounting seat 3.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A working roll axial movement device, characterized in that: include: A hydraulic sleeve (4), wherein the hydraulic sleeve (4) is connected to the rolling mill; A piston (5), wherein the piston (5) is mounted on the inner side of the hydraulic sleeve (4); A sliding sleeve (6), the sliding sleeve (6) being mounted on the outside of the hydraulic sleeve (4), the sliding sleeve (6) being connected to the piston (5), and a first boss (601) being provided on the outside of the sliding sleeve (6); A rotating sleeve (7), the rotating sleeve (7) is rotatably connected to the outer side of the sliding sleeve (6), the rotating sleeve is provided with a second boss (703), and a driving groove is formed between the second boss (703) and the first boss (601); A driving assembly is used to drive the rotating sleeve (7) to rotate.

2. The work roll axial shifting device according to claim 1, characterized in that: One end of the hydraulic sleeve (4) away from the piston (5) is in communication with the hydraulic device; A first annular sealing groove is formed on the outer wall of the piston (5), a first sealing ring is provided in the first annular sealing groove, and a connecting rod (501) is provided at the other end of the piston (5), and the connecting rod (501) is connected to the sliding sleeve (6).

3. The work roll axial shifting device according to claim 2, characterized in that: A flange (10) is correspondingly provided at one end of the sliding sleeve (6) away from the piston (5), and the flange (10) is fixedly connected to the sliding sleeve (6) by bolts. A threaded rod (502) is fixedly provided at one end of the connecting rod (501) away from the piston (5), and the diameter of the threaded rod (502) is smaller than the diameter of the connecting rod (501). The threaded rod (502) passes through the flange (10) and is threadedly connected to the threaded sleeve (14); A collar (13) is provided between the flange (10) and the connecting rod (501), and the collar (13) is located outside the threaded rod (502).

4. The work roll axial shifting device according to claim 2, characterized in that: A sealing ring (16) is fixedly provided at one end of the hydraulic sleeve (4) adjacent to the piston (5), the inner diameter of the sealing ring (16) matches the diameter of the connecting rod (501), and the connecting rod (501) is installed on the inner side of the sealing ring (16); A second annular sealing groove is formed on the inner side wall of the sealing ring (16), and a second sealing ring is provided in the second annular sealing groove; A third annular sealing groove is formed on the outer side wall of the sealing ring (16), a third sealing ring is provided in the third annular sealing groove, and the third sealing ring is located between the inner side wall of the hydraulic sleeve (4) and the outer side wall of the sealing ring (16).

5. The work roll axial shifting device according to claim 2, characterized in that: A first annular boss (602) is fixedly provided on the outer side of one end of the sliding sleeve (6) away from the piston (5), and the rotating sleeve (7) is installed between the first annular boss (602) and the flange (10); A gasket (9) is provided between the rotating sleeve (7) and the flange (10); Annular mounting grooves are provided at both ends of the inner side of the rotating sleeve (7), a rotating sleeve (701) is provided in the annular mounting groove, slip rings (702) are fixedly provided at both ends of the rotating sleeve (7), the slip rings (702) are fixedly connected to the rotating sleeve by bolts, and the slip rings (702) press the rotating sleeve (701).

6. The work roll axial shifting device according to claim 1, characterized in that: A linear sliding sleeve (8) is provided between the sliding sleeve (6) and the hydraulic sleeve (4); a second annular boss (604) is provided on the inner side of one end of the sliding sleeve (6) adjacent to the piston (5); the second annular boss (604) limits one end of the linear sliding sleeve (8); a retaining ring (11) is fixed on one end of the sliding sleeve (6) away from the second annular boss (604); the retaining ring (11) is connected to the sliding sleeve (6) by bolts; the retaining ring (11) limits one end of the linear sliding sleeve (8) away from the second annular boss (604).

7. The work roll axial shifting device according to claim 6, characterized in that: There are two linear sleeves (8), a support ring (17) is provided between the two linear sleeves (8), the outer diameter of the support ring (17) matches the inner diameter of the sliding sleeve (6), the inner diameter of the support ring (17) is larger than the outer diameter of the hydraulic sleeve (4), a lubricating oil hole is provided on the side wall of the support ring (17), and a connecting hole corresponding to the lubricating oil hole is opened on the sliding sleeve (6); A fourth sealing ring (18) is provided between the inner side wall of the linear sleeve (8) adjacent to the second boss (703) and the outer side wall of the hydraulic sleeve (4); A fourth sealing ring (18) is provided between the inner side of the retaining ring (11) and the outer side wall of the hydraulic sleeve (4).

8. The work roll axial shifting device according to claim 1, characterized in that: The sliding sleeve (6) is provided with a displacement sensor (15) corresponding to the hydraulic sleeve (4); The driving component is a hydraulic cylinder (12), the housing of the hydraulic cylinder (12) is hinged to the sliding sleeve (6), and the output shaft of the hydraulic cylinder (12) is hinged to the rotating sleeve (7).

9. A rolling mill comprising a frame (2), a mounting seat (3), and a roll (1), wherein both ends of the roll (1) are rotatably connected to the mounting seat (3), and the mounting seat (3) is movably connected to the frame (2) along the axis of the roll (1), characterized in that: A driving boss (301) is provided on the mounting seat (3), and the driving boss (301) is located inside the driving groove of the working roller axial shifting device; The working roll axial shifting device is a working roll axial shifting device according to any one of claims 1 to 8, and the hydraulic sleeve (4) is fixedly connected to the frame (2).

10. A rolling mill according to claim 9, characterized in that: The number of the rolls (1) is two, namely an upper roll (1) and a lower roll (1), and each roll (1) is provided with two working roll axial shifting devices, and the two working roll axial shifting devices are symmetrically distributed on both sides of the mounting seat (3) along the axis of the roll (1); Two first guide plates (603) are fixedly provided on the outer wall of the sliding sleeve (6), a guide channel is formed between the two first guide plates (603), and the guide channel is arranged along the axial direction of the roller (1). A second guide plate (201) is fixedly provided on the frame (2), and the second guide plate (201) is located on the inner side of the wire channel.

Images