A 9cr2mo cold roll surface modification device
By designing a surface modification device for 9Cr2Mo cold rolling rolls, the problems of inconvenient handling and low processing efficiency of small cold rolling rolls were solved, enabling rapid lifting, loading, and uniform processing of cold rolling rolls, thereby improving processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 山东邦巨实业有限公司
- Filing Date
- 2024-03-11
- Publication Date
- 2026-06-02
AI Technical Summary
Small 9Cr2Mo cold rolling rolls are inconvenient to handle during processing, which affects the efficiency of surface modification and is cumbersome to remove.
A surface modification device for 9Cr2Mo cold rolling rolls was designed, comprising a base, a lifting structure, a moving structure, and a driving structure. The lifting structure allows for rapid lifting and removal of the cold rolling rolls, the moving structure facilitates loading and unloading, and the driving structure drives the cold rolling rolls to rotate, working in conjunction with a spraying device for surface modification.
It improves the processing efficiency of cold rolling rolls, simplifies the handling and removal process of cold rolling rolls, and ensures the uniformity and efficiency of processing.
Smart Images
Figure CN118272754B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cold rolling roll production technology, specifically to a 9Cr2Mo cold rolling roll surface modification device. Background Technology
[0002] In a broad sense, cold rolling rolls include work rolls that contact the workpiece and support rolls that provide support. Fatigue spalling is the most common failure mode of rolling rolls. It originates from fatigue cracks on the roll surface. If these cracks are not completely removed before rolling, they will propagate fatigue within the hardened layer, forming typical fatigue bands, and eventually leading to fatigue spalling. To improve the service life of cold rolling rolls, modern industrial production typically modifies the surface of cold rolling rolls to enhance their surface strength. Using pulsed explosion plasma technology to modify the surface of 9Cr2Mo cold rolling rolls can significantly improve the material's key properties such as wear resistance and corrosion resistance.
[0003] However, when processing some small cold rolling rolls, the large weight of the rolls makes them inconvenient to handle, which affects the efficiency of surface modification. At the same time, removing the processed rolls is also quite cumbersome. Summary of the Invention
[0004] To address the problems in the prior art, the present invention provides a surface modification device for 9Cr2Mo cold rolling rolls.
[0005] The technical solution adopted by the present invention to solve its technical problem is: a 9Cr2Mo cold rolling roll surface modification device, including a base, a spraying device installed on one side of the base, a lifting structure in the middle of the base, a moving structure at the end of the base, a limiting structure inside the lifting structure, and a driving structure connecting the lifting structure and the base.
[0006] Specifically, the lifting structure includes a rotating shaft, which is rotatably connected to the middle of the base. A support frame is fixedly connected to each end of the rotating shaft. The support frame has a "U" shape. A first gear is fixedly connected to the end of the rotating shaft. A second gear meshes with the side of the first gear. A drive shaft is fixedly connected to the middle of the second gear. The drive shaft is rotatably connected to the base.
[0007] Specifically, the diameter of the first gear is larger than that of the second gear, a worm gear is fixedly connected to the middle of the rotating shaft, and a worm is rotatably connected to the side of the base, with the side of the worm meshing with the worm gear.
[0008] Specifically, the movable structure includes an inclined plane, the end of the base is fixedly connected to the inclined plane, the cross-section of the inclined plane is a right-angled triangle, the middle of the inclined plane is rotatably connected to a lifting plate, the inclined plane has a groove at the end of the lifting plate, a contact plate is rotatably connected to the inclined plane, and a second spring is fixedly connected between the contact plate and the inclined plane.
[0009] Specifically, the limiting structure includes a limiting stop bar, the limiting stop bar is slidably connected to the inner side of the support frame, the limiting stop bar is rotatably connected to the support frame, a rotating sleeve is rotatably connected to the limiting stop bar, the rotating sleeve is slidably connected to the support frame, and a third spring is fixedly connected between the rotating sleeve and the support frame.
[0010] Specifically, a third gear is fixedly connected to the end of the limiting stop, a rack meshes with the side of the third gear, the rack is slidably connected to the support frame, and a fourth spring is fixedly connected between the rack and the support frame.
[0011] Specifically, a locking rod is fixedly connected to the end of the rack, a locking rod is slidably connected to the inner side of the support frame, a fifth spring is fixedly connected between the locking rod and the support frame, and a locking block is fixedly connected to the inner side of the locking rod.
[0012] Specifically, the driving structure includes a first pulley, which is rotatably connected to the inner side of the support frame. A second pulley is provided on the side of the first pulley, which is rotatably connected to the support frame. A transverse groove is provided at one end of the second pulley. A transmission rod is slidably connected to the inner side of the base. An arc plate is provided at the end of the transmission rod. The side of the arc plate has an arc-shaped structure, and the arc plate engages with the second pulley through the transverse groove.
[0013] Specifically, a telescopic sleeve is rotatably connected to the transmission rod, the telescopic sleeve is slidably connected to the base, a first spring is fixedly connected between the telescopic sleeve and the base, a release groove is provided on the side of the support frame, the end of the telescopic sleeve is located in the release groove, a connecting rod is slidably connected to the other end of the transmission rod, a motor is installed on the side of the base, and the motor is fixedly connected to the connecting rod through a coupling.
[0014] The beneficial effects of this invention are:
[0015] (1) The 9Cr2Mo cold rolling roll surface modification device of the present invention has a lifting structure in the middle of the base and a moving structure at the end of the base. The lifting structure can quickly lift and remove the cold rolling roll, improving processing efficiency. The moving structure can conveniently load and unload the cold rolling roll, improving processing efficiency. Specifically: First, two "U"-shaped support frames are provided on the base. The support frames rotate around the rotating shaft. When the support frames are in a horizontal state, the user can easily place the cold rolling roll to be processed into the U-shaped groove on the support frame. Then, the worm located at the end of the base is rotated. Through the transmission effect of the worm and worm wheel, the drive shaft is driven to rotate. The two ends of the drive shaft are respectively provided with second gears. The diameter of the second gear is smaller than that of the first gear meshing with it. This allows for easier rotation of the first gear, which in turn rotates the support frame. Once the support frame is in a vertical position, the cold rolling roll can be processed. Because the bottom of the support frame has a certain height, an inclined surface is provided at the end of the base to facilitate placing the cold rolling roll into the U-shaped groove of the support frame. The user can roll the cold rolling roll into the support frame along the inclined surface. To further facilitate loading the cold rolling roll, an abutment plate is provided on the inclined surface. After the cold rolling roll passes the abutment plate, the abutment plate will spring back under the push of the second spring, inhibiting the roll's retraction and facilitating loading. Additionally, a lifting plate is provided in the middle of the inclined surface, allowing the user to use leverage to push the cold rolling roll placed on the inclined surface towards the support frame, improving work efficiency.
[0016] (2) The 9Cr2Mo cold rolling roll surface modification device of the present invention has a limiting structure on the inner side of the lifting structure. The limiting structure can limit the loaded cold rolling roll to prevent it from rolling out. Specifically, a limiting stop is provided on the inner side of the support frame. The side of the limiting stop is a sloping structure. When the end of the cold rolling roll is placed into the U-shaped groove of the support frame, the limiting stop will automatically retract, thereby limiting the cold rolling roll in the U-shaped groove and preventing it from rolling back. Then, the user rotates the worm gear to rotate the support frame to a vertical position. If the limiting stop is still needed, the user can slide the rack on the side of the support frame, causing the rack to drive the third gear to rotate. This causes the locking rod at the end of the rack to engage with the locking rod. Due to the rotation of the third gear, the inclined surface at the end of the limiting stop changes direction, thus losing its limiting effect on the cold rolling roll. When the support frame rotates to a horizontal position and the finished cold rolling roll needs to be removed, the user only needs to press the locking rod to release the lock on the rack. Under the action of the fourth spring, the limiting stop will return to the limiting state.
[0017] (3) The 9Cr2Mo cold rolling roll surface modification device of the present invention has a driving structure connected between the lifting structure and the base. The driving structure can drive the lifted cold rolling roll to rotate, ensuring the uniformity of processing. That is, after the cold rolling roll is fixed on the support frame, the CrMo cold rolling roll is surface strengthened by the spraying device using pulse explosion plasma technology. In order to make the processing more comprehensive, the motor is electrically connected to the external power supply. During the process of the support frame rotating to the vertical state, the end of the telescopic sleeve will abut against the base, so that the telescopic sleeve drives the transmission rod to retract as a whole. After the support frame rotates to the vertical state, the end of the telescopic sleeve slides into the release groove. At this time, the motor is started. As the motor rotates, the connecting rod will drive the transmission rod to rotate at the same time. When the arc plate is embedded in the transverse groove at the end of the second pulley due to rotation, the second pulley starts to rotate. Through the setting of the first pulley and the second pulley, the cold rolling roll will always be kept in the middle position of the U-shaped groove. At the same time, the rotation of the second pulley will make the cold rolling roll continue to rotate. With the processing of the spraying device, a good processing effect can be achieved. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0019] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a 9Cr2Mo cold rolling roll surface modification device provided by the present invention;
[0020] Figure 2 for Figure 1 The diagram shows the connection structure of the support frame and base.
[0021] Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A.
[0022] Figure 4 for Figure 1 The diagram shows the structure of the support frame.
[0023] Figure 5 for Figure 4 The diagram shows the connection structure of the support frame and the limiting stop bar.
[0024] Figure 6 for Figure 4 The diagram shows the structure of the limit stop bar;
[0025] Figure 7 for Figure 1 The diagram shows the connection structure between the base and the motor.
[0026] Figure 8 for Figure 1 The diagram shows the structure of the inclined plane.
[0027] Figure 9 for Figure 1 The diagram shows the connection structure between the inclined plane and the contact plate.
[0028] In the diagram: 1. Base; 2. Spraying device; 3. Lifting structure; 301. Rotating shaft; 302. Support frame; 303. First gear; 304. Second gear; 305. Worm; 306. Drive shaft; 307. Worm wheel; 4. Drive structure; 401. Motor; 402. First pulley; 403. Second pulley; 404. Horizontal groove; 405. Transmission rod; 406. Arc plate; 407. Telescopic sleeve; 408. First spring; 09. Connecting rod; 410. Release groove; 5. Moving structure; 501. Inclined surface; 502. Lifting plate; 503. Contact plate; 504. Groove; 505. Second spring; 6. Limiting structure; 601. Limiting stop bar; 602. Sleeve; 603. Third spring; 604. Third gear; 605. Rack; 606. Fourth spring; 607. Engaging rod; 608. Locking rod; 609. Fifth spring; 610. Locking block. Detailed Implementation
[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0030] like Figures 1-9 As shown, the 9Cr2Mo cold rolling roll surface modification device of the present invention includes a base 1, a spraying device 2 installed on one side of the base 1, a lifting structure 3 provided in the middle of the base 1, a moving structure 5 provided at the end of the base 1, a limiting structure 6 provided inside the lifting structure 3, and a driving structure 4 connected between the lifting structure 3 and the base 1.
[0031] Specifically, the lifting structure 3 includes a rotating shaft 301, which is rotatably connected to the middle of the base 1. A support frame 302 is fixedly connected to each end of the rotating shaft 301. The support frame 302 has a U-shaped structure. A first gear 303 is fixedly connected to the end of the rotating shaft 301. A second gear 304 meshes with the side of the first gear 303. A drive shaft 306 is fixedly connected to the middle of the second gear 304. The drive shaft 306 is rotatably connected to the base 1. The diameter of the first gear 303 is larger than that of the second gear 304. A worm gear 307 is fixedly connected to the middle of the rotating shaft 301. A worm 305 is rotatably connected to the side of the base 1. The side of the worm 305 meshes with the worm gear 307. The lifting structure 3 can quickly lift the cold rolling roll. To improve processing efficiency, the following steps are taken: First, two U-shaped support frames 302 are provided on the base 1. The support frames 302 rotate around the rotating shaft 301. When the support frames 302 are in a horizontal state, the user can easily place the cold rolling roll to be processed into the U-shaped groove on the support frame 302. Then, the worm 305 located at the end of the base 1 is rotated. Through the transmission effect of the worm 305 and the worm wheel 307, the drive shaft 306 is driven to rotate. The two ends of the drive shaft 306 are respectively provided with second gears 304. The diameter of the second gear 304 is smaller than that of the first gear 303 meshing with it, so that the first gear 303 can be driven to rotate with less effort, thereby causing the support frame 302 to rotate. When the support frame 302 rotates to a vertical state, the cold rolling roll processing work can be carried out.
[0032] Specifically, the movable structure 5 includes an inclined surface 501, which is fixedly connected to the end of the base 1. The inclined surface 501 has a right-angled triangular cross-section. A lifting plate 502 is rotatably connected to the middle of the inclined surface 501. A groove 504 is provided at the end of the lifting plate 502 on the inclined surface 501. An abutment plate 503 is rotatably connected to the inclined surface 501. A second spring 505 is fixedly connected between the abutment plate 503 and the inclined surface 501. The movable structure 5 facilitates the loading and unloading of the cold rolling roll, improving processing efficiency. That is, since the bottom side of the support frame 302 has a certain height, it is easier to place the cold rolling roll into the support frame 302. Within the U-shaped groove of 02, an inclined surface 501 is provided at the end of the base 1. The user can roll the cold rolling roll to be processed into the support frame 302 along the inclined surface 501. To further facilitate the loading of the cold rolling roll, an abutment plate 503 is provided on the inclined surface 501. After the cold rolling roll passes the abutment plate 503, the abutment plate 503 will spring back under the push of the second spring 505 and play a certain role in inhibiting the rollback of the cold rolling roll, which facilitates the loading of the cold rolling roll. At the same time, a lifting plate 502 is also provided in the middle of the inclined surface 501, so that the user can use leverage to push the cold rolling roll placed on the inclined surface 501 toward the support frame 302, thereby improving work efficiency.
[0033] Specifically, the limiting structure 6 includes a limiting stop 601, which is slidably connected to the inner side of the support frame 302. The limiting stop 601 is rotatably connected to the support frame 302. A rotating sleeve 602 is rotatably connected to the limiting stop 601, and the rotating sleeve 602 is slidably connected to the support frame 302. A third spring 603 is fixedly connected between the rotating sleeve 602 and the support frame 302. A third gear 604 is fixedly connected to the end of the limiting stop 601, and a rack 605 meshes with the side of the third gear 604. The rack 605 is slidably connected to the support frame 302. A fourth spring 606 is fixedly connected between the rack 605 and the support frame 302. A locking rod 607 is fixedly connected to the end of the rack 605. A locking rod 608 is slidably connected to the inner side of the support frame 302. A fifth spring 609 is fixedly connected between the locking rod 608 and the support frame 302. A locking block 610 is fixedly connected to the inner side of the locking rod 608. The limiting structure 6 can limit the loaded cold rolling roll to prevent it from coming off. That is, the cold rolling roll is located on the support frame. A limiting stop 601 is provided on the inner side of support frame 302. The side of the limiting stop 601 is a sloping surface 501. When the end of the cold rolling roll is placed into the U-shaped groove of support frame 302, the limiting stop 601 will automatically retract, thereby limiting the cold rolling roll in the U-shaped groove and preventing the cold rolling roll from rolling back. After the user rotates the worm gear 305 to rotate support frame 302 to a vertical position, the limiting action of the limiting stop 601 is no longer needed. The user can slide the rack 605 on the side of support frame 302, so that the rack 605 drives the third tooth. The rotation of the gear 604 causes the engaging rod 607 at the end of the rack 605 to engage with the locking rod 608. Due to the rotation of the third gear 604, the orientation of the inclined surface 501 at the end of the limit stop 601 changes, thus losing its limiting function for the cold rolling roll. When the support frame 302 rotates to a horizontal position and the finished cold rolling roll needs to be removed, the user only needs to press the locking rod 608 to release the lock on the rack 605. Under the action of the fourth spring 606, the limit stop 601 can be restored to the limiting state.
[0034] Specifically, the drive structure 4 includes a first pulley 402, which is rotatably connected to the inner side of the support frame 302. A second pulley 403 is provided on the side of the first pulley 402, and the second pulley 403 is rotatably connected to the support frame 302. A transverse groove 404 is provided at one end of the second pulley 403. A transmission rod 405 is slidably connected to the inner side of the base 1. An arc plate 406 is provided at the end of the transmission rod 405. The side of the arc plate 406 has an arc-shaped structure, and the arc plate 406 is connected to the second pulley 403 through the transverse groove 404. The transmission rod 405 is rotatably connected to a telescopic sleeve 407, which is slidably connected to the base 1. A first spring 408 is fixedly connected between the telescopic sleeve 407 and the base 1. A release groove 410 is provided on the side of the support frame 302, and the end of the telescopic sleeve 407 is located in the release groove 410. A connecting rod 409 is slidably connected to the other end of the transmission rod 405. A motor 401 is mounted on the side of the base 1, and the motor 401 is fixedly connected to the connecting rod 409 through a coupling. The drive structure 4 can drive... The cold rolling roll, after being lifted, rotates to ensure uniform processing. Specifically, after the cold rolling roll is fixed on the support frame 302, the CrMo cold rolling roll undergoes surface strengthening treatment using pulsed explosion plasma technology via the spray device 2. To ensure more comprehensive treatment, the motor 401 is electrically connected to an external power source. During the rotation of the support frame 302 to a vertical position, the end of the telescopic sleeve 407 contacts the base 1, causing the telescopic sleeve 407 to retract along with the transmission rod 405. Once the support frame 302 reaches a vertical position, the telescopic sleeve 407... 7. The end slides into the release groove 410. At this time, the motor 401 is started. As the motor 401 rotates, the connecting rod 409 will drive the transmission rod 405 to rotate. When the arc plate 406 is embedded in the transverse groove 404 at the end of the second pulley 403 due to rotation, the second pulley 403 will start to rotate. Through the setting of the first pulley 402 and the second pulley 403, the cold rolling roll will always be kept in the middle position of the U-shaped groove. At the same time, the rotation of the second pulley 403 will make the cold rolling roll continue to rotate. With the processing of the spraying device 2, a good processing effect can be achieved.
[0035] In use, this invention firstly has two U-shaped support frames 302 on the base 1. The support frames 302 rotate around the rotating shaft 301. When the support frames 302 are in a horizontal state, the user can easily place the cold rolling roll to be processed into the U-shaped groove on the support frame 302. Then, the worm 305 located at the end of the base 1 is rotated. Through the transmission effect of the worm 305 and the worm wheel 307, the drive shaft 306 is driven to rotate. The two ends of the drive shaft 306 are respectively provided with second gears 304. The diameter of the second gears 304 is smaller than that of the first gear 303 meshing with it, so that the first gear 303 can be driven to rotate with less effort, thereby causing the support frames 302 to rotate. When the support frame 302 rotates, the user can easily place the cold rolling roll to be processed into the U-shaped groove on the support frame 302. 2. When rotated to the vertical position, the cold rolling roll can be processed. Since the bottom side of the support frame 302 has a certain height, in order to further facilitate the placement of the cold rolling roll into the U-shaped groove of the support frame 302, an inclined surface 501 is provided at the end of the base 1. The user can roll the cold rolling roll to be processed into the support frame 302 along the inclined surface 501. At the same time, in order to further facilitate the loading of the cold rolling roll, an abutment plate 503 is provided on the inclined surface 501. When the cold rolling roll passes the abutment plate 503, the abutment plate 503 will spring back under the push of the second spring 505 and play a certain role in inhibiting the rollback of the cold rolling roll, which facilitates the loading of the cold rolling roll. At the same time, a lifting plate 502 is also provided in the middle of the inclined surface 501, so that the user can use the lever action. The cold rolling roll, placed on the inclined plane 501, is pushed towards the support frame 302 to improve work efficiency. A limiting stop 601 is located on the inner side of the support frame 302, with the side of the limiting stop 601 being the inclined plane 501 structure. When the end of the cold rolling roll is placed into the U-shaped groove of the support frame 302, the limiting stop 601 automatically retracts, thus limiting the cold rolling roll in the U-shaped groove and preventing it from rolling back. After the user rotates the worm gear 305 to rotate the support frame 302 to a vertical position, the limiting action of the limiting stop 601 is no longer needed. The user can then slide the rack 605 on the side of the support frame 302, causing the rack 605 to drive the third gear 604 to rotate 180 degrees, and causing the end of the rack 605 to... Engaging rod 607 and locking rod 608 engage. Due to the rotation of the third gear 604, the inclined surface 501 at the end of the limit stop rod 601 changes direction, thus losing its limiting function for the cold rolling roll. When the support frame 302 rotates to a horizontal position and the finished cold rolling roll needs to be removed, the user only needs to press the locking rod 608 to release the lock on the rack 605. Under the action of the fourth spring 606, the limit stop rod 601 returns to the limiting state. After the cold rolling roll is fixed on the support frame 302, the 9Cr2Mo cold rolling roll is surface-strengthened using pulsed explosion plasma technology via the spray device 2. To ensure a more comprehensive treatment, the motor 401 is electrically connected to an external power supply.During the rotation of the support frame 302 to a vertical position, the end of the telescopic sleeve 407 will abut against the base 1, causing the telescopic sleeve 407 to retract along with the transmission rod 405. After the support frame 302 reaches a vertical position, the end of the telescopic sleeve 407 slides into the release groove 410. At this time, the motor 401 is started. As the motor 401 rotates, the connecting rod 409 simultaneously drives the transmission rod 405 to rotate. When the arc plate 406 is inserted into the transverse groove 404 at the end of the second pulley 403 due to rotation, the second pulley 403 begins to rotate. Through the arrangement of the first pulley 402 and the second pulley 403, the cold rolling roll is always kept in the middle position of the U-shaped groove. At the same time, the rotation of the second pulley 403 causes the cold rolling roll to rotate continuously. Combined with the processing of the spraying device 2, a good processing effect can be achieved.
[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A surface modification device for 9Cr2Mo cold rolling rolls, characterized in that, Includes a base (1), a spraying device (2) is installed on one side of the base (1), a lifting structure (3) is provided in the middle of the base (1), a moving structure (5) is provided at the end of the base (1), a limiting structure (6) is provided inside the lifting structure (3), and a driving structure (4) is connected between the lifting structure (3) and the base (1). The lifting structure (3) includes a rotating shaft (301), the rotating shaft (301) is rotatably connected to the middle of the base (1), and a support frame (302) is fixedly connected to both ends of the rotating shaft (301). The support frame (302) has a "U" shaped structure. A first gear (303) is fixedly connected to the end of the rotating shaft (301). A second gear (304) meshes with the side of the first gear (303). A drive shaft (306) is fixedly connected to the middle of the second gear (304). The drive shaft (306) is rotatably connected to the base (1). The diameter of the first gear (303) is larger than that of the second gear (304). A worm wheel (307) is fixedly connected to the middle of the drive shaft (306). A worm (305) is rotatably connected to the side of the base (1). The side of the worm (305) meshes with the worm wheel (307). The movable structure (5) includes an inclined surface (501). The inclined surface (501) is fixedly connected to the end of the base (1). The cross section of the inclined surface (501) is a right-angled triangle. A lifting plate (502) is rotatably connected to the middle of the inclined surface (501). A groove (504) is provided at the end of the lifting plate (502) on the inclined surface (501). An abutment plate (503) is rotatably connected to the inclined surface (501). A second spring (505) is fixedly connected between the abutment plate (503) and the inclined surface (501). The drive structure (4) includes a first pulley (402), the first pulley (402) is rotatably connected to the inner side of the support frame (302), a second pulley (403) is provided on the side of the first pulley (402), the second pulley (403) is rotatably connected to the support frame (302), a transverse groove (404) is provided at one end of the second pulley (403), a transmission rod (405) is slidably connected to the inner side of the base (1), an arc plate (406) is provided at the end of the transmission rod (405), the side of the arc plate (406) is arc-shaped, and the arc plate (406) is engaged with the second pulley (403) through the transverse groove (404); A telescopic sleeve (407) is rotatably connected to the transmission rod (405). The telescopic sleeve (407) is slidably connected to the base (1). A first spring (408) is fixedly connected between the telescopic sleeve (407) and the base (1). A release groove (410) is provided on the side of the support frame (302). The end of the telescopic sleeve (407) is located in the release groove (410). A connecting rod (409) is slidably connected to the other end of the transmission rod (405). A motor (401) is installed on the side of the base (1). The motor (401) is fixedly connected to the connecting rod (409) through a coupling.
2. The surface modification device for 9Cr2Mo cold rolling rolls according to claim 1, characterized in that: The limiting structure (6) includes a limiting stop (601), the limiting stop (601) is slidably connected to the inner side of the support frame (302), the limiting stop (601) is rotatably connected to the support frame (302), a rotating sleeve (602) is rotatably connected to the limiting stop (601), the rotating sleeve (602) is slidably connected to the support frame (302), and a third spring (603) is fixedly connected between the rotating sleeve (602) and the support frame (302).
3. The surface modification device for 9Cr2Mo cold rolling rolls according to claim 2, characterized in that: The end of the limiting stop (601) is fixedly connected to a third gear (604), and the side of the third gear (604) is meshed with a rack (605). The rack (605) is slidably connected to the support frame (302), and a fourth spring (606) is fixedly connected between the rack (605) and the support frame (302).
4. The surface modification device for 9Cr2Mo cold rolling rolls according to claim 3, characterized in that: The rack (605) is fixedly connected to a locking rod (607) at its end, and a locking rod (608) is slidably connected to the inside of the support frame (302). A fifth spring (609) is fixedly connected between the locking rod (608) and the support frame (302), and a locking block (610) is fixedly connected to the inside of the locking rod (608).