Roller shaft end locking and positioning device

Abstract

This invention discloses a roll shaft end locking and positioning device, relating to the field of mechanical technology. It includes a main frame with two symmetrically arranged positioning blocks and a lifting adjustment mechanism connected to a lifting plate. The lifting plate has a rotating displacement ring mechanism, and inside the rotating displacement ring mechanism are two symmetrically arranged displacement adjustment rod mechanisms connected to a displacement clamping frame mechanism. The displacement clamping frame mechanism contains two locking clamping ring mechanisms connected end-to-end. An adjustment ring mechanism is located between the two displacement clamping frame mechanisms, and the adjustment ring mechanism has two symmetrically arranged end positioning mechanisms. This invention, by setting up a lifting adjustment mechanism, can adjust the height of the lifting plate; by rotating the displacement ring mechanism, it can drive the displacement adjustment rod mechanism to rotate and shift; and by adjusting the displacement adjustment rod mechanism, it can adjust the state of the locking clamping ring mechanism, thereby improving the efficiency of roll shaft end locking and positioning.

Description

Technical Field

[0001] This invention relates to the field of mechanical technology, specifically a roll shaft end locking and positioning device. Background Technology

[0002] As a core component of a rolling mill, the assembly accuracy of the rolls directly affects the quality of the rolled products and the stability of the equipment operation. Reliable positioning and fixation of the roll shaft end are essential in processes such as roll replacement, bearing assembly, dynamic balancing testing, and repair. Current technology widely adopts an integrated semi-ring structure. This structure typically consists of two semi-rings made of high-strength alloy steel, fixed together by a pin, then fitted onto the roll shaft end and radially tightened with a high-strength bolt. Torque is transmitted through a fixing key on the outer ring and by the friction between the semi-rings and the shaft end. However, this traditional method has significant shortcomings:

[0003] Poor adaptability: Simple clamps can usually only adapt to shaft ends with a single or small range of diameters. For rolls of different specifications, the pads need to be frequently replaced or adjusted, and the preparation work is cumbersome and time-consuming.

[0004] Limited positioning accuracy: Relying on manual alignment and clamping makes it difficult to guarantee the precise alignment and repeatability of the axis, which has a significant impact, especially when precision measurement or processing is required.

[0005] Limited functionality: Most clamps only provide radial clamping and lack auxiliary support for the shaft end face, which is insufficient for working conditions with long overhangs or those requiring end face positioning.

[0006] Inconvenient adjustment: For non-horizontal shaft end positioning or requiring a specific angle (such as tilted assembly of rolls), traditional fixtures are difficult to achieve convenient posture adjustment.

[0007] Therefore, there is an urgent need for a specialized roll shaft end locking and positioning device with high adaptability, multi-degree-of-freedom adjustment capability, high positioning accuracy, and the ability to provide end-face auxiliary support, in order to improve work efficiency and quality. Summary of the Invention

[0008] The present invention provides a roll shaft end locking and positioning device, which solves the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A roll shaft end locking and positioning device includes a main frame with two symmetrically arranged positioning blocks. The main frame also has a lifting adjustment mechanism connected to a lifting plate. A rotating displacement ring mechanism is located on the lifting plate, and two symmetrically arranged displacement adjustment rod mechanisms are located inside the rotating displacement ring mechanism. These rod mechanisms are connected to a displacement clamping frame mechanism, which contains a locking ring mechanism. An adjustment ring mechanism is located between the two displacement clamping frames, and the adjustment ring mechanism has two symmetrically arranged end positioning mechanisms. The lifting adjustment mechanism adjusts the height of the lifting plate, the rotating displacement ring mechanism drives the displacement adjustment rod mechanisms to rotate and shift positions, the displacement adjustment rod mechanisms adjust the deflection state of the displacement clamping frame mechanism, the locking ring mechanism fixes the shaft, and the adjustment ring mechanism adjusts the state of the end positioning mechanism. The end of the shaft of the end positioning mechanism receives auxiliary support.

[0011] As a preferred embodiment of the present invention, the lifting adjustment mechanism includes a motor base fixed to the main frame, a motor mounted on the motor base, the motor being a double-headed motor, the output shaft of the motor being fixedly connected to two first rotating shafts, the first rotating shafts being fixedly connected to a first bevel gear, the first bevel gear meshing with a second bevel gear, the second bevel gear being coaxially fixedly connected to a second rotating shaft, the second rotating shaft passing through the main frame, the second rotating shaft and the main frame being rotatably connected, the second rotating shaft being provided with a threaded groove, the second rotating shaft being threadedly connected to a lifting plate, and the lifting plate and the main frame being slidably connected.

[0012] As a preferred embodiment of the present invention, the rotating displacement ring mechanism includes a displacement ring rotatably connected to the lifting plate, a worm gear fixedly connected to the outer side of the displacement ring, a worm seat fixedly connected to the lifting plate, a worm shaft rotatably connected to the worm seat, a worm shaft fixedly connected to the worm, and a first handle fixedly connected to one end of the worm shaft.

[0013] As a preferred embodiment of the present invention, the displacement adjusting rod mechanism includes a first deflection seat fixed to the inner side of the displacement ring, the first deflection seat being rotatably connected to a threaded sleeve, the threaded sleeve being internally threaded to a supporting threaded rod, the threaded sleeve being threaded to a first locking bolt, the end of the first locking bolt being in contact with the supporting threaded rod, the end of the supporting threaded rod away from the threaded sleeve being rotatably connected to a rotating block, and the rotating block being rotatably connected to a second deflection seat.

[0014] As a preferred embodiment of the present invention, the displacement frame mechanism includes a fixed frame fixedly connected to a second deflection seat, the fixed frame having a fixed slot, and the fixed slot being threadedly connected to a second locking bolt.

[0015] As a preferred embodiment of the present invention, the locking ring mechanism includes a fixed block, the fixed block and the fixed groove having the same cross-section, the fixed block being fixedly connected to a semi-circular ring, one end of the semi-circular ring being provided with an arc-shaped insertion groove, the end of the semi-circular ring away from the arc-shaped insertion groove being fixedly connected to an arc-shaped insertion rod, the arc-shaped insertion rod and the arc-shaped insertion groove having the same size, and both the semi-circular ring and the arc-shaped insertion rod being provided with insertion holes, the inner diameter of the insertion holes being the same as the outer diameter of the second locking bolt.

[0016] As a preferred embodiment of the present invention, the adjusting ring mechanism includes two adjusting threaded rods rotatably connected to the fixed frame. The two adjusting threaded rods are respectively connected to the two fixed frames. The end of the adjusting threaded rod away from the fixed frame is fixedly connected to the second handle. The adjusting threaded rod is threadedly connected to the adjusting ring.

[0017] As a preferred embodiment of the present invention, the end positioning mechanism includes a feed threaded rod rotatably connected to the adjusting ring. The feed threaded rod is located on the outside of the adjusting ring. A third handle is fixedly connected to the end of the feed threaded rod away from the adjusting ring. The feed threaded rod is threadedly connected to a feed plate. The feed plate is fixedly connected to a feed rod. The feed rod passes through the adjusting ring and is slidably connected to the adjusting ring. An arc-shaped side plate is fixedly connected to the end of the feed rod away from the feed plate. An end plate is fixedly connected to the side of the arc-shaped side plate. A plurality of balls are provided on the inner sides of both the arc-shaped side plate and the end plate.

[0018] The present invention has the following advantages:

[0019] 1. Possesses multi-degree-of-freedom flexible adjustment capabilities and strong adaptability: Height adjustment: Through the lifting adjustment mechanism, the height of the lifting plate and all positioning components above it can be adjusted as a whole, easily adapting to rolls with different center heights or cooperating with operating platforms of different heights. Horizontal swing angle adjustment: The rotating displacement ring mechanism, through worm gear transmission, can drive the displacement ring and the displacement adjustment rod mechanism installed inside it to rotate synchronously, thereby changing the relative angle of the two locking ring mechanisms in the horizontal plane, perfectly adapting to the horizontal deflection requirements of the roll axis (such as tilted rolls). Radial tilt angle and distance adjustment: Each displacement adjustment rod mechanism is independently adjustable. By adjusting the extension length of the support threaded rod by screwing the threaded sleeve and locking it with the first locking bolt, the radial tilt angle and relative center distance of the corresponding displacement frame mechanism can be changed, realizing adaptive fine-tuning and pre-positioning for irregular or different mandrel ends.

[0020] 2. Modular locking design, universal and convenient: The locking ring mechanism adopts a split design, consisting of two semi-circular rings with arc-shaped inserts and holes. By selecting semi-circular ring assemblies with different inner diameters and embedding their fixing blocks into the fixing slots of the displacement frame mechanism, and then tightening them with a second locking bolt through the hole, it can quickly adapt to the ends of roll shafts of different diameters. This modular design greatly expands the size applicability of the device and allows for quick replacement.

[0021] 3. Provides precise axial auxiliary positioning and support: Rotating the adjusting threaded rod via the adjusting ring mechanism drives the adjusting ring to move axially. The end positioning mechanism is mounted on the adjusting ring; rotating the feed threaded rod precisely controls the radial feed of the arc-shaped side clamping plate and the end clamping plate, thereby providing contact and support to the end of the roll shaft from both the side and end faces. The inner ball bearings effectively reduce friction, allowing for slight rotational alignment of the roll before locking, and providing stable auxiliary positioning after locking to prevent axial movement. This is particularly suitable for long shafts or applications requiring end face reference.

[0022] 4. Robust structure and user-friendly operation: Major adjustment functions such as worm gear rotation, threaded sleeve adjustment, and operation of the second and third handles are all designed with manual operation interfaces (first handle, etc.), reducing operational complexity and reliance on specialized tools while ensuring rigidity and precision. Each component is equipped with reliable mechanical locking (such as the first and second locking bolts) to ensure stability under the weight of the rolls and operating forces.

[0023] 5. Improved work efficiency and safety: This device integrates height, angle, radial, and axial adjustments, enabling rapid and precise positioning and locking of roll ends of different specifications, reducing hoisting and adjustment time and worker workload. The stable clamping also reduces safety risks during operation. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a first-view structure of a roll shaft end locking and positioning device.

[0026] Figure 2 This is a schematic diagram of a roll shaft end locking and positioning device from a second perspective.

[0027] Figure 3This is a partial structural diagram of a roll shaft end locking and positioning device.

[0028] Figure 4 This is a partial structural diagram of a roll shaft end locking and positioning device.

[0029] Figure 5 This is a cross-sectional view of a locking ring mechanism in a roll shaft end locking and positioning device.

[0030] In the diagram: 1. Main frame; 2. Positioning block; 3. Lifting and adjusting mechanism; 301. Motor base; 302. Motor; 303. First rotating shaft; 304. First bevel gear; 305. Second bevel gear; 306. Second rotating shaft; 4. Lifting plate; 5. Rotating displacement ring mechanism; 501. Displacement ring; 502. Worm gear; 503. Worm seat; 504. Worm shaft; 505. Worm; 506. First handle; 6. Displacement adjusting rod mechanism; 601. First deflection seat; 602. Threaded sleeve; 603. Support threaded rod; 604. First locking bolt; 605. Rotating block; 606. 7. Second deflection seat; 8. Displacement frame mechanism; 9. Fixed frame; 10. Fixed slot; 11. Second locking bolt; 12. Locking ring mechanism; 13. Fixed block; 14. Semicircular ring; 15. Arc-shaped insertion rod slot; 16. Arc-shaped insertion rod; 17. Insertion hole; 18. Adjustment ring mechanism; 19. Adjustment threaded rod; 10. Second handle; 10. Adjustment ring; 11. End positioning mechanism; 12. Feed threaded rod; 13. Third handle; 14. Feed plate; 15. Feed rod; 16. Arc-shaped side plate; 17. End plate. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0033] For examples, please refer to Figures 1-5A roll shaft end locking and positioning device includes a main frame 1, on which two symmetrically arranged positioning blocks 2 are provided. A lifting adjustment mechanism 3 is provided on the main frame 1, connected to a lifting plate 4. A rotating displacement ring mechanism 5 is provided on the lifting plate 4. Two symmetrically arranged displacement adjustment rod mechanisms 6 are provided inside the rotating displacement ring mechanism 5. The displacement adjustment rod mechanisms 6 are connected to a displacement clamping frame mechanism 7. A locking clamping ring mechanism 8 is provided inside the displacement clamping frame mechanism 7. An adjustment ring mechanism 9 is provided between the two displacement clamping frame mechanisms 7. Two symmetrically arranged end positioning mechanisms 10 are provided on the adjustment ring mechanism 9. The lifting adjustment mechanism 3 is used to adjust the height of the lifting plate 4. The rotating displacement ring mechanism 5 is used to drive the displacement adjustment rod mechanism 6 to rotate and shift. The displacement adjustment rod mechanism 6 is used to adjust the deflection state of the displacement clamping frame mechanism 7. The locking clamping ring mechanism 8 is used to fix the shaft. The adjustment ring mechanism 9 is used to adjust the state of the end positioning mechanism 10. The end of the shaft of the end positioning mechanism 10 is provided with auxiliary support.

[0034] The lifting and adjusting mechanism 3 includes a motor base 301 fixed on the main frame 1, a motor 302 mounted on the motor base 301, the motor 302 being a double-headed motor, the output shaft of the motor 302 being fixedly connected to two first rotating shafts 303, the first rotating shafts 303 being fixedly connected to a first bevel gear 304, the first bevel gear 304 meshing with a second bevel gear 305, the second bevel gear 305 being coaxially fixedly connected to a second rotating shaft 306, the second rotating shaft 306 passing through the main frame 1, the second rotating shaft 306 being rotatably connected to the main frame 1, the second rotating shaft 306 being provided with a threaded groove, the second rotating shaft 306 being threadedly connected to the lifting plate 4, and the lifting plate 4 being slidably connected to the main frame 1.

[0035] Specifically, motor 302 (dual-head output) drives two first rotating shafts 303 to rotate. Through the meshing of the first bevel gear 304 and the second bevel gear 305, the motion is transmitted to two vertical second rotating shafts 306. The second rotating shafts 306 are rotatably connected to the main frame 1 via bearings and have threaded grooves machined on them. The lifting plate 4 engages with the second rotating shafts 306 through threaded holes and, under the constraint of the main frame 1, achieves precise vertical lifting and lowering as the second rotating shafts 306 rotate.

[0036] The rotating displacement ring mechanism 5 includes a displacement ring 501 rotatably connected to the lifting plate 4. A worm gear 502 is fixedly connected to the outer side of the displacement ring 501. A worm seat 503 is fixedly connected to the lifting plate 4. A worm shaft 504 is rotatably connected to the worm seat 503. A worm 505 is fixedly connected to the worm shaft 504. One end of the worm shaft 504 is fixedly connected to a first handle 506. The displacement adjustment rod mechanism 6 includes a first deflection seat 601 fixed to the inner side of the displacement ring 501. A threaded sleeve 602 is rotatably connected to the first deflection seat 601. A supporting threaded rod 603 is threadedly connected to the threaded sleeve 602. A first locking bolt 604 is threadedly connected to the threaded sleeve 602. The end of the first locking bolt 604 contacts the supporting threaded rod 603. A rotating block 605 is rotatably connected to the end of the supporting threaded rod 603 away from the threaded sleeve 602. The rotating block 605 is rotatably connected to the second deflection seat 606.

[0037] Specifically, the displacement ring 501 is connected to the lifting plate 4 via a large slewing bearing. Its outer worm gear 502 meshes with a worm pair consisting of a worm shaft 504 and a worm 505. The worm shaft 504 is supported in a worm seat 503 and can be manually rotated via a first handle 506. Operating the first handle 506 allows the displacement ring 501 to rotate slowly and self-lockingly in the horizontal plane via the worm pair. Two first deflection seats 601 are symmetrically fixed to the inner side of the displacement ring 501, each connected to a displacement adjustment rod mechanism 6. The core of this mechanism is a threaded pair consisting of a threaded sleeve 602 and a supporting threaded rod 603. Rotating the threaded sleeve 602 precisely adjusts the extension length of the supporting threaded rod 603, and after adjustment, it is locked with a first locking bolt 604. The end of the supporting threaded rod 603 is hinged to the second deflection seat 606 via a rotating block 605. The second deflector 606 is fixedly connected to the fixed frame 701 of the displacement frame mechanism 7. Therefore, by adjusting the length of the support threaded rod 603, the angle and radial position of the fixed frame 701 relative to the center of the device can be changed.

[0038] The displacement clamping mechanism 7 includes a fixed clamping frame 701 fixedly connected to the second deflection seat 606. The fixed clamping frame 701 is provided with a fixed clamping groove 702, and the fixed clamping groove 702 is threadedly connected to the second locking bolt 703. The locking ring mechanism 8 includes a fixed clamping block 801. The fixed clamping block 801 and the fixed clamping groove 702 have the same cross-section. The fixed clamping block 801 is fixedly connected to a semi-circular ring 802. One end of the semi-circular ring 802 is provided with an arc-shaped insertion groove 803. The end of the semi-circular ring 802 away from the arc-shaped insertion groove 803 is fixedly connected to an arc-shaped insertion rod 804. The arc-shaped insertion rod 804 and the arc-shaped insertion groove 803 are the same size. Both the semi-circular ring 802 and the arc-shaped insertion rod 804 are provided with insertion holes 805. The inner diameter of the insertion hole 805 is the same as the outer diameter of the second locking bolt 703.

[0039] Specifically, the fixed frame 701 of the displacement frame mechanism 7 has a fixed slot 702 with a standard cross-section. The locking ring mechanism 8 is installed and positioned by its fixed block 801 being embedded in this slot, and is finally tightened by the second locking bolt 703 through the insertion hole 805. The locking ring mechanism 8 consists of two identical components, each including a semi-circular ring 802 and an arc-shaped insertion rod 804 at one end (the other component has a corresponding arc-shaped insertion rod slot 803). After the two components are engaged, the arc-shaped insertion rod 804 is inserted into the arc-shaped insertion rod slot 803 of the other component and aligned through the insertion hole 805 to form a complete ring that grips the roll journal. By replacing the locking ring mechanism 8 components with different inner diameter specifications, different shaft diameters can be accommodated.

[0040] The adjusting ring mechanism 9 includes an adjusting threaded rod 901 rotatably connected to a fixed frame 701. There are two adjusting threaded rods 901, which are respectively connected to two fixed frames 701. The end of the adjusting threaded rod 901 away from the fixed frame 701 is fixedly connected to a second handle 902. The adjusting threaded rod 901 is threadedly connected to an adjusting ring 903. The end positioning mechanism 10 includes a feed threaded rod 1001 rotatably connected to the adjusting ring 903. The feed threaded rod 1001 is located on the outside of the adjusting ring 903. The end of the feed threaded rod 1001 away from the adjusting ring 903 is fixedly connected to the third handle 1002. The feed threaded rod 1001 is threadedly connected to the feed plate 1003. The feed plate 1003 is fixedly connected to the feed rod 1004. The feed rod 1004 passes through the adjusting ring 903 and is slidably connected to the adjusting ring 903. The end of the feed rod 1004 away from the feed plate 1003 is fixedly connected to the arc-shaped side clamping plate 1005. The side of the arc-shaped side clamping plate 1005 is fixedly connected to the end clamping plate 1006. The inner sides of both the arc-shaped side clamping plate 1005 and the end clamping plate 1006 are provided with a plurality of balls.

[0041] Specifically, an adjusting ring mechanism 9 is connected between the two fixed clamping frames 701. Two adjusting threaded rods 901 are rotatably connected to the two fixed clamping frames 701 respectively, and their threaded portions engage with an adjusting ring 903. Rotating either of the second handles 902 causes the adjusting threaded rod 901 to rotate, thereby driving the adjusting ring 903 to move along the axis (i.e., the roll axis). The end positioning mechanism 10 is mounted on the adjusting ring 903. The feed threaded rod 1001 engages with the threaded hole on the adjusting ring 903, and its outer end is equipped with a third handle 1002. Rotating the third handle 1002 causes the feed plate 1003 to drive the feed rod 1004 and the end arc-shaped side clamping plate 1005 and end clamping plate 1006 to move radially. The inner surfaces of the arc-shaped side clamping plate 1005 and end clamping plate 1006 are embedded with several balls to reduce contact friction.

[0042] The workflow of this invention is as follows:

[0043] Preparation and initial positioning: Select a suitable locking ring mechanism 8 according to the roller shaft diameter, and insert its fixing block 801 into the fixing slots 702 of the two displacement frame mechanisms 7, and pre-tighten it with the second locking bolt 703. Adjust the device to a suitable height using the lifting adjustment mechanism 3.

[0044] Shaft end introduction and coarse adjustment: Use a crane or hoist to lift the roll shaft end between the two semi-circular retaining rings 802. By operating the two displacement adjustment rod mechanisms 6, adjust the length of the support threaded rod 603 respectively so that the two semi-circular retaining rings 802 roughly fit the journal, and then tighten the first locking bolt 604.

[0045] Horizontal angle adjustment: If there is a horizontal deviation of the roll axis, turn the first handle 506, which drives the worm wheel 502 and the displacement ring 501 to rotate through the worm 505, causing the clamping units on both sides to deflect synchronously, so that the circlip axis is aligned with the roll axis.

[0046] Final locking: After complete alignment, tighten the two second locking bolts 703 to secure the locking ring mechanism 8 firmly against the roll journal.

[0047] End-point auxiliary positioning: Move the adjusting ring 903 axially to a position close to the shaft end. Operate the two third handles 1002 to drive the arc-shaped side plates 1005 and the end plate 1006 on both sides to feed radially, so that the inner balls gently contact the outer circle and end face of the shaft end, providing auxiliary support and positioning, and the rollers can be slightly rotated for final centering.

[0048] Operation and Disassembly: After positioning, subsequent assembly or testing can be carried out. After the operation is completed, loosen the locking and adjusting mechanisms in reverse order and remove the device.

[0049] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A roll shaft end locking and positioning device, comprising a main frame, characterized in that, The main frame has two symmetrically arranged positioning blocks and a lifting adjustment mechanism connected to a lifting plate. The lifting plate has a rotating displacement ring mechanism, and inside the rotating displacement ring mechanism are two symmetrically arranged displacement adjustment rod mechanisms connected to a displacement retaining frame mechanism. The displacement retaining frame mechanism has a locking ring mechanism, and between the two displacement retaining frame mechanisms is an adjustment ring mechanism with two symmetrically arranged end positioning mechanisms. The lifting adjustment mechanism adjusts the height of the lifting plate, the rotating displacement ring mechanism drives the displacement adjustment rod mechanism to rotate and shift, the displacement adjustment rod mechanism adjusts the deflection state of the displacement retaining frame mechanism, the locking ring mechanism fixes the shaft, and the adjustment ring mechanism adjusts the state of the end positioning mechanism. The end of the shaft of the end positioning mechanism provides auxiliary support.

2. The roll shaft end locking and positioning device according to claim 1, characterized in that, The lifting and adjusting mechanism includes a motor base fixed to the main frame, a motor mounted on the motor base, the motor being a double-headed motor, the output shaft of the motor being fixedly connected to two first rotating shafts, the first rotating shafts being fixedly connected to a first bevel gear, the first bevel gear meshing with a second bevel gear, the second bevel gear being coaxially fixedly connected to a second rotating shaft, the second rotating shaft passing through the main frame, the second rotating shaft and the main frame being rotatably connected, the second rotating shaft being provided with a threaded groove, the second rotating shaft being threadedly connected to a lifting plate, and the lifting plate and the main frame being slidably connected.

3. The roll shaft end locking and positioning device according to claim 1, characterized in that, The rotating displacement ring mechanism includes a displacement ring rotatably connected to the lifting plate, a worm gear fixedly connected to the outer side of the displacement ring, a worm seat fixedly connected to the lifting plate, a worm shaft rotatably connected to the worm seat, a worm shaft fixedly connected to the worm, and a first handle fixedly connected to one end of the worm shaft.

4. The roll shaft end locking and positioning device according to claim 3, characterized in that, The displacement adjusting rod mechanism includes a first deflection seat fixed to the inner side of the displacement ring, a threaded sleeve rotatably connected to the first deflection seat, a supporting threaded rod internally connected to the threaded sleeve, a first locking bolt threadedly connected to the threaded sleeve, the end of the first locking bolt contacting the supporting threaded rod, a rotating block rotatably connected to the end of the supporting threaded rod away from the threaded sleeve, and a second deflection seat rotatably connected to the rotating block.

5. The roll shaft end locking and positioning device according to claim 4, characterized in that, The displacement frame mechanism includes a fixed frame that is fixedly connected to the second deflection seat. The fixed frame is provided with a fixed slot, and the fixed slot is threadedly connected to the second locking bolt.

6. The roll shaft end locking and positioning device according to claim 5, characterized in that, The locking ring mechanism includes a fixed block, the fixed block and the fixed groove have the same cross-section, the fixed block is fixedly connected to a semi-circular ring, one end of the semi-circular ring is provided with an arc-shaped insertion groove, the end of the semi-circular ring away from the arc-shaped insertion groove is fixedly connected to an arc-shaped insertion rod, the arc-shaped insertion rod and the arc-shaped insertion groove are the same size, both the semi-circular ring and the arc-shaped insertion rod are provided with insertion holes, the inner diameter of the insertion holes is the same as the outer diameter of the second locking bolt.

7. The roll shaft end locking and positioning device according to claim 5, characterized in that, The adjusting ring mechanism includes two adjusting threaded rods rotatably connected to the fixed clamping frames. The two adjusting threaded rods are respectively connected to the two fixed clamping frames. The end of the adjusting threaded rod away from the fixed clamping frame is fixedly connected to the second handle. The adjusting threaded rod is threadedly connected to the adjusting ring.

8. The roll shaft end locking and positioning device according to claim 7, characterized in that, The end positioning mechanism includes a feed threaded rod rotatably connected to the adjusting ring. The feed threaded rod is located on the outside of the adjusting ring. The end of the feed threaded rod away from the adjusting ring is fixedly connected to a third handle. The feed threaded rod is threadedly connected to a feed plate. The feed plate is fixedly connected to a feed rod. The feed rod passes through the adjusting ring and is slidably connected to the adjusting ring. The end of the feed rod away from the feed plate is fixedly connected to an arc-shaped side clamping plate. The side of the arc-shaped side clamping plate is fixedly connected to an end clamping plate. Both the arc-shaped side clamping plate and the end clamping plate have several ball bearings on their inner sides.

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