A C-shaped clamp spring dismounting device for end part of a rolling mill support roll and a dismounting method thereof

Abstract

The application relates to a C-shaped clamp spring dismounting device for the end of a rolling mill supporting roller, characterized in that the device comprises a supporting and positioning device for fixing the rolling mill supporting roller, a lifting ring track fixedly installed on the supporting and positioning device, two groups of sliding dismounting units slidably installed on the lifting ring track, and a clamp device correspondingly installed on the sliding dismounting units and used for positioning a dismounting hole on the C-shaped clamp spring to be dismounted; a supporting base and a positioning device are arranged in the supporting and positioning device and used for positioning the supporting roller; the lifting ring track is installed on the supporting and positioning device; the sliding dismounting units can slide along the lifting ring track; the clamp device is provided with a clamp needle and a sliding shell, the clamp needle is used for dismounting the clamp spring, and the sliding shell is used for assisting in positioning the position of the clamp needle; the device can skillfully avoid the opening gap of the clamp spring, position the dismounting hole of the clamp spring, and then dismount the clamp spring at the end of the rolling mill supporting roller; the device is light in structure, convenient in dismounting the clamp spring, strong in adaptability, and suitable for automatic dismounting assembly line operation to a certain extent.

Description

Technical Field

[0001] This invention belongs to the field of rolling mill component disassembly technology, and relates to a disassembly device and method for the C-type retaining spring at the end of a rolling mill support roll. Background Technology

[0002] In modern rolling mill production, support rolls are critical equipment components. Their main function is to support the work rolls or themselves, preventing the work rolls from bending and deforming during rolling, which would affect the output and quality of sheet or strip. However, as the service life of support rolls increases, their roll bodies and bearings inevitably experience varying degrees of wear and fatigue damage. To ensure the normal operation of the rolling mill and product quality, regular batch disassembly, inspection, repair, or replacement of support rolls is an essential maintenance measure. During the disassembly of support rolls, the removal of the retaining springs at both ends is a key process. Currently, the removal of retaining springs mostly relies on manual operation. While this method is feasible in small-scale production, for the batch disassembly of small and medium-sized support rolls, manual disassembly is extremely inefficient and consumes a significant amount of time and manpower. Especially in high-intensity production environments, manual disassembly not only easily leads to operator fatigue but may also damage the support rolls or retaining springs due to improper operation, further affecting production efficiency and equipment lifespan. Furthermore, manual disassembly also poses certain safety hazards. Operators may be exposed to harsh environments such as high temperatures and oil contamination during the disassembly process, which can easily lead to safety accidents. Therefore, traditional manual disassembly methods can no longer meet the demands of modern rolling mill production for efficient, stable, and safe disassembly, making the development of an automated mechanical device that can replace manual disassembly particularly urgent.

[0003] In the field of automation, despite continuous technological advancements, the automated removal of retaining rings at the ends of support rolls still faces numerous challenges. First, the unpredictable location of the retaining ring's opening and small hole makes it difficult for traditional automated machinery to accurately identify and position it. Since the size and shape of the retaining ring may vary depending on the type of support roll, automated equipment needs high flexibility and adaptability to accurately locate and remove the retaining ring's small hole under different conditions. Second, the oily environment surrounding the retaining ring further complicates automated removal. Oil adheres to the surface of the retaining ring, interfering with the machine vision system's recognition function, leading to decreased positioning accuracy or even failure to recognize it. Furthermore, oil can enter the moving parts of the machinery, affecting its normal operation and reducing its reliability and lifespan. These factors collectively restrict the application of automated removal technology in support roll maintenance. Therefore, designing a C-type retaining ring removal machine capable of self-positioning, adapting to oily environments, and fitting into automated removal production lines is not only crucial for improving production efficiency and equipment maintenance levels but also an inevitable choice for promoting the automation and intelligence of rolling mill equipment maintenance technology. This device needs to integrate advanced visual recognition technology, adaptive positioning system and reliable mechanical structure to overcome the shortcomings of existing technology and achieve efficient, stable and safe circlip disassembly. Summary of the Invention

[0004] In view of this, in order to solve the problem that the disassembly of the retaining spring at the end of the support roller is not automated due to the uncertainty of the position of the retaining spring opening and the small hole, and that manual disassembly is time-consuming and affects production efficiency, the present invention provides a C-type retaining spring disassembly device and disassembly method at the end of the rolling mill support roller. It can effectively disassemble the retaining spring by self-positioning and is adapted to automated disassembly production lines to a certain extent.

[0005] To achieve the above objectives, the present invention provides the following technical solution: the above-mentioned existing C-type snap ring disassembly method

[0006] A C-type retaining ring removal device for the end of a rolling mill support roll includes a support positioning device for fixing the rolling mill support roll, a lifting ring rail fixedly installed on the support positioning device, two sets of sliding removal units slidably installed on the lifting ring rail, and a clamping device correspondingly installed on the sliding removal units for positioning the removal hole on the C-type retaining ring to be removed.

[0007] Furthermore, the support positioning device includes a support base, positioning devices respectively installed on both sides of the support base for elastic positioning of the mill support rolls, and hydraulic cylinders respectively installed on the outside of the positioning devices for supporting the lifting ring rail.

[0008] Furthermore, the support base has a groove platform at its center for placing the mill support rolls. Each positioning device includes a U-shaped slide groove fixedly installed on both sides of the groove platform, a movable V-shaped block slidably installed in the slide groove, and two first springs. One end of each first spring is fixedly connected to the bottom side surface of the slide groove, and the other end is fixedly connected to the bottom side surface of the movable V-shaped block.

[0009] Furthermore, the lifting ring rail includes a spindle-shaped base plate fixedly connected to two hydraulic cylinders, a circular ring rail, and multiple columns evenly distributed around the ring rail to support the base plate and the ring rail.

[0010] Furthermore, the lower end of the outer ring of the ring rail is provided with an outer toothed ring, and the upper ends of both the inner and outer rings are provided with raised annular raceways. The outer toothed ring and the annular raceways are used to cooperate with the sliding disassembly unit to slide smoothly along the ring rail.

[0011] Furthermore, each sliding disassembly unit includes a sector-shaped slide table slidably mounted on the ring rail, a sector-shaped plate fixedly mounted on the sector-shaped slide table, and a sector-shaped motor base fixedly mounted on the lower outer side of the sector-shaped plate for fixing the motor. The inner side of the sector-shaped motor base is provided with a small gear that meshes with the external gear ring and is fixedly connected to the motor output shaft. The sector plate is provided with a rotatable electric cylinder base and a servo electric cylinder clamped on the rotatable electric cylinder base. The rotatable electric cylinder base is slidably mounted with a guide rod for fixing the caliper device along the radial direction of the ring rail.

[0012] Furthermore, guide wheels are fixedly installed at the four corners of the bottom of the fan-shaped slide, and the guide wheels are provided with wheel grooves that are compatible with the annular raceway. The inner side of the fan-shaped plate is provided with an arc-shaped groove to facilitate the rotation of the rotatable electric cylinder seat.

[0013] Furthermore, the rotatable electric cylinder base is L-shaped, with a hinge hole on the outer protrusion to facilitate rotational connection with the fan-shaped plate, a limiting post at the lower inner end to slide with the arc-shaped groove, and an electric cylinder slot at the upper part to facilitate placement of the servo electric cylinder. Guide holes are provided on both sides of the upper end of the electric cylinder slot to facilitate the insertion of guide rods.

[0014] Furthermore, each caliper assembly includes a connecting plate fixedly connected to the telescopic rod of the servo electric cylinder, and an upper curved plate and a lower curved plate fixedly connected to the upper and lower ends of the connecting plate, respectively. The upper surface of the upper curved plate is vertically fixedly connected to a single-acting lead-in cylinder, and the lower surface of the lower curved plate is vertically fixedly connected to a caliper needle sleeve. The lower end of the caliper needle sleeve is fitted with a sliding shell that works in conjunction with the caliper needle sleeve.

[0015] Furthermore, the single-acting cylinder has an internal elastic element connected to the cylinder's extension rod. The upper end of the single-acting cylinder has a fine air hole for connecting to the atmosphere. The cylinder also has an internal sealing ring for airtight sealing of the extension rod. An air pipe connector is located at the cylinder's air inlet. The clamp needle sleeve is a hollow shaft structure with an eccentric stepped hole running through its center. Limit pin holes are located on both the front and rear sides of the lower end, and a shoulder is located near the upper end. The clamp needle sleeve is vertically fixed to the lower end face of the lower bending plate and is coaxial with the single-acting cylinder. The clamp needle is an eccentric shaft structure threaded to the lower end of the single-acting cylinder's extension rod, moving vertically with the extension rod.

[0016] Furthermore, a connecting rod is fixedly connected to one end of the connecting plate near the telescopic rod. The connecting rod is fixedly connected to the telescopic rod of the servo electric cylinder. The connecting plate has an installation slot that is fixedly connected to the end of the guide rod.

[0017] Furthermore, a sensor for detecting changes in the position of the extension rod is fixedly connected to the outside of the single-acting cylinder.

[0018] Furthermore, the upper end of the sliding shell is provided with a flange, and the front and rear sides are provided with limiting slots that are adapted to the limiting pin holes; a limiting pin is provided in the limiting pin holes, and the sliding shell is limited through the limiting slots.

[0019] Furthermore, a second spring is provided between the shoulder of the clamp needle sleeve and the slide shell. The proximity switch is vertically fixed to the inside of the lower bending plate, with its lower end face facing the flange of the slide shell and leaving a gap between them.

[0020] The disassembly method for the C-type retaining spring removal device at the end of the mill support roll includes the following steps:

[0021] S1. Before the support roller is placed into the disassembly device, the lifting ring rail is in the raised state, the positioning device is in the initial state, and the caliper device is in the standby state. At this time, the sliding housing is subjected to the elastic force of the second spring, and its lower end extends out from the caliper needle sleeve. Due to the restriction of the limiting pin, the flange of the sliding housing moves away from the proximity switch. The single-acting introduction cylinder is in the continuous air supply state. At this time, the extension rod of the single-acting introduction cylinder is pushed back into the cylinder by the gas. The extension rod drives the caliper needle to retract into the caliper needle sleeve, and the caliper needle is in the standby state.

[0022] S2. After the support roller is positioned on the support base by the movable V-block, the support roller is coaxial with the lifting ring rail. Under the drive of the hydraulic cylinder, the lifting ring rail descends to the predetermined working position, and the caliper device enters the working state.

[0023] S3. In operation, the motor drives the sliding disassembly unit to slide along the circumference of the ring rail. If the caliper device descends with the lifting ring rail to the upper surface of the C-type circumferential ...

[0024] S4. If the caliper device descends into the opening gap of the C-type circlip to be removed: At this time, the sliding housing is not lifted, and the caliper device is in standby state. As its circular motion proceeds, the caliper device in the opening gap of the C-type circlip to be removed will sweep past the edge of the opening to the upper surface of the C-type circlip to be removed, until the lower end of the caliper pin falls into the removal hole.

[0025] S5. When the lower end of the clamp needle falls into the disassembly hole, the sensor detects the change in the vertical position of the extension rod of the single-acting introduction cylinder. The control unit receives the signal to control the motor to stop, and the circumferential movement of the clamp device stops. At this time, while the servo electric cylinder extension rod extends, the motors of the two sets of sliding disassembly units drive the sliding disassembly units to make clockwise and counterclockwise circumferential movements respectively. The rotatable electric cylinder seat rotates around the hinge hole until the limit pins of the two sets of rotatable electric cylinder seats are limited by the arc groove of the sector plate, and the motor stops moving. During this period, the clamp needle is positioned in the disassembly hole of the C-type retaining ring to be disassembled. The servo electric cylinder continuously outputs thrust, circumferentially pressing close to the disassembly holes of the two C-type retaining rings to be disassembled, and removing the C-type retaining rings to be disassembled from the retaining ring groove.

[0026] S6. The hydraulic cylinder drives the lifting ring rail to rise, which in turn brings the caliper device and C-type retaining spring upward out of the support roller. At this point, the retaining spring disassembly is completed.

[0027] Furthermore, the disassembly and positioning of the two sets of sliding disassembly units in step S3 includes the following steps:

[0028] S31. The initial arrangement of two sets of caliper devices is 180° collinear; when performing the circular motion to find the C-type circumferential retaining ring removal hole, the two sets of sliding removal units move clockwise (or counterclockwise) simultaneously.

[0029] S32. The lifting ring rail descends to the working position, i.e., the lower end face of the caliper pin sleeve is flush with the upper surface of the C-type circumferential spring to be disassembled; both sets of caliper devices enter the working state. If at this time, the sliding housings of both sets of caliper devices are lifted and the pins are retracted into the pin sleeve, i.e., both sets of caliper devices descend to contact the upper surface of the C-type circumferential spring to be disassembled: the two sets of sliding disassembly units simultaneously move clockwise (or counterclockwise) at a uniform speed until the pin of one set of caliper devices is extended from the pin sleeve, i.e., the pin of this set falls into the disassembly hole of the C-type circumferential spring to be disassembled. At this time, the motor of this set stops, and at the same time, the other set of sliding disassembly units moves counterclockwise (or clockwise) in a circular motion until the pin of the other set of caliper devices is extended from the pin sleeve, i.e., the pins of both sets of caliper devices fall into the disassembly hole of the C-type circumferential spring to be disassembled; then the disassembly of the C-type circumferential spring to be disassembled is carried out;

[0030] S33. If at this time, in the two sets of caliper devices, one set of sliding housings is lifted while the other set is not lifted, and the caliper pins of both sets of caliper devices are in the retracted pin sleeve state, that is, one set of caliper devices descends to contact the upper surface of the C-type circumferential retaining ring to be removed, and the other set falls into the gap of the C-type circumferential retaining ring to be removed: the two sets of sliding disassembly units simultaneously move clockwise (or counterclockwise) at a uniform speed until the caliper pins of both sets of caliper devices are in the extended pin sleeve state, that is, both sets of pins fall into the disassembly hole of the C-type circumferential retaining ring to be removed; then the disassembly of the C-type circumferential retaining ring to be removed is performed;

[0031] S34. If at this time, in one of the two sets of caliper devices, the sliding housing of one set is lifted and the caliper pin retracts into the caliper pin sleeve, and the sliding housing of the other set is lifted and the caliper pin extends out of the caliper pin sleeve, that is, one set of caliper devices descends to contact the upper surface of the C-type circlip to be removed, and the caliper pin of the other set of caliper devices falls into the removal hole of the C-type circlip to be removed: the lifting ring rail rises a certain distance, so that the caliper device moves away from the C-type circlip to be removed, and then the two sets of sliding removal units move a small distance in the same direction, and the lifting ring rail is lowered to the working position again to carry out the removal work.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. The C-type retaining ring removal device and its removal method for the end of the support roll of a rolling mill are described. The motor drives the fan-shaped slide to move in a circular motion along the ring rail, so that the clamp device is attached to the upper surface of the retaining ring to search for the retaining ring removal hole. This solves the problem that the retaining ring removal hole is randomly located due to the placement of the support roll and the installation of the retaining ring in actual working conditions, which makes automated removal difficult.

[0034] 2. The C-type retaining ring removal device and its removal method for the end of the rolling mill support roll are innovatively designed to remove the C-type retaining ring by using a caliper device that is linked to a single-acting inlet cylinder and a sliding housing. The lower end of the sliding housing adopts a pointed design. By utilizing the circumferential movement of the caliper device, it is effectively ensured that the retractable caliper pins avoid the retaining ring opening and position the retaining ring removal hole, thereby improving positioning efficiency. The removal principle is simple.

[0035] 3. The C-type retaining ring removal device and its removal method for the end of the rolling mill support roll, in response to the problem that the C-type retaining ring to be removed has different situations relative to the caliper device, proposes a method in which two sets of caliper devices are arranged collinearly at 180° and move in the same direction in a circular motion to deal with different removal situations, simplify the complex random retaining ring removal hole position situation, shorten the removal time and improve the removal efficiency.

[0036] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0037] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0038] Figure 1 This is a schematic diagram of the overall structure (including the support roller) of the C-type retaining ring removal device for the end of the rolling mill support roller according to the present invention.

[0039] Figure 2 For the present invention Figure 1 Schematic diagram of the middle support positioning device;

[0040] Figure 3 For the present invention Figure 1 Schematic diagram of the overall structure of the lifting ring rail and sliding disassembly unit;

[0041] Figure 4 For the present invention Figure 3 Cross-section of the central ring rail and schematic diagram of the sliding disassembly unit structure;

[0042] Figure 5 For the present invention Figure 4 Schematic diagram of the rotatable electric cylinder base structure;

[0043] Figure 6 For the present invention Figure 1 Schematic diagram of the caliper assembly;

[0044] Figure 7 For the present invention Figure 6A sectional view of the rotating section of the middle clamp needle sleeve structure;

[0045] Figure 8 For the present invention Figure 6 Schematic diagram of the middle clamp pin structure;

[0046] Figure 9 For the present invention Figure 6 Schematic diagram of a medium-sized sliding shell structure;

[0047] Figure 10 For the present invention Figure 6 Schematic diagram of the operating principle of a single-acting cylinder;

[0048] Figure 11 This is a schematic diagram of the process of the caliper device of the present invention passing through the gap edge of the C-type retaining spring in the hole;

[0049] Figure 12 (a) and (b) are schematic diagrams showing the position change of the disassembly unit when using the C-type retaining ring for the lateral disassembly hole of the present invention;

[0050] Figure 13 (a) to (f) are examples of two positioning methods for disassembling holes using C-type snap rings according to the present invention.

[0051] Reference numerals: 1. Support base; 101. Slot platform; 2. Hydraulic cylinder; 3. Positioning device; 301. Movable V-block; 302. First spring; 303. Slide groove; 4. Base plate; 5. Column; 6. Ring rail; 601. External gear ring; 602. Circular track; 7. Guide wheel; 701. Wheel groove; 8. Sector-shaped slide platform; 9. Sector-shaped plate; 901. Arc groove; 10. Sector-shaped motor base; 11. Motor; 12. Pinion; 13. Rotatable electric cylinder base; 1301. Hinge hole; 1302. Limiting post; 1303. Guide hole; 1304. Electric cylinder slot; 14. Servo electric cylinder; 14 01. Telescopic rod; 15. Guide rod; 16. Connecting rod; 17. Connecting plate; 18. Upper bending plate; 19. Lower bending plate; 20. Single-acting lead-in type cylinder; 2001. Extension rod; 2002. Elastic element; 2003. Fine air hole; 2004. Sealing ring; 21. Sensor; 22. Air pipe connector; 23. Pliers needle sleeve; 2301. Eccentric stepped hole; 2302. Limiting pin hole; 2303. Shoulder; 24. Pliers needle; 2401. Threaded hole; 25. Sliding housing; 2501. Flange; 2502. Limiting groove; 26. Second spring; 27. Limiting pin; 28. Proximity switch. Detailed Implementation

[0052] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0053] like Figures 1-9 The illustrated C-type retaining ring removal device for the end of a rolling mill support roll includes a support and positioning device for fixing the rolling mill support roll, a lifting ring rail fixedly mounted on the support and positioning device, two sets of sliding removal units slidably mounted on the lifting ring rail, and a clamping device correspondingly mounted on the sliding removal units for positioning the removal holes on the C-type retaining rings to be removed. The support and positioning device ensures the support and positioning of the rolling mill support roll; the lifting ring rail adjusts the positions of the sliding removal units and the clamping device to accommodate C-type retaining rings at different positions on the end of the rolling mill support roll; the cooperation between the sliding removal units and the clamping device positions the removal holes of the C-type retaining rings to be removed at random locations.

[0054] In this embodiment, the support positioning device includes a support base 1, positioning devices 3 respectively installed on both sides of the support base 1 for elastic positioning of the mill support rolls, and hydraulic cylinders 2 respectively installed on the outside of the positioning devices 3 for supporting the lifting ring rail. Due to the elastic positioning of the positioning devices 3, the support positioning device can adapt to mill support rolls of different diameters. Specifically, the support base 1 has a groove platform 101 at its center for placing the mill support rolls; there are two hydraulic cylinders 2, respectively installed on the outside of the positioning devices 3 on the support base 1; the positioning device 3 includes two sets of movable V-blocks 301 with identical structures, a first spring 302, and a slide groove 303; wherein, the slide groove 303 is fixed to the support base 1 and symmetrically arranged on the left and right sides of the groove platform 101, the movable V-blocks 301 are arranged in the slide groove 303 and can slide along the slide groove 303, and there are two first springs in each set, one end of which is fixed to the bottom side surface of the slide groove 303, and the other end is connected to the bottom side surface of the movable V-blocks 301.

[0055] In this embodiment, the lifting ring rail includes a base plate 4, a circular ring rail 6, and columns 5 evenly distributed around the ring rail 6 to support the base plate 4 and the ring rail 6. The base plate 4 is spindle-shaped, with both ends fixed to the piston rods of two hydraulic cylinders 2, and can be vertically raised and lowered with the piston rods of the hydraulic cylinders 2. There are five columns 5, evenly distributed around the circumference and fixed to the base plate 4. The lower end of the outer ring of the ring rail 6 is provided with an outer toothed ring 601, and the upper ends of the inner and outer rings are provided with raised annular raceways 602. The outer toothed ring 601 and the annular raceways 602 are used to cooperate with the sliding disassembly unit to slide smoothly along the ring rail 6. The lower end face of the ring rail 6 is fixed to the columns 5 through mounting holes.

[0056] In this embodiment, there are two sets of sliding disassembly units. Each set of sliding disassembly units includes guide wheels 7, fan-shaped slides 8, fan-shaped plates 9, fan-shaped motor bases 10, motors 11, pinions 12, rotatable electric cylinder bases 13, servo electric cylinders 14, and guide rods 15. The guide wheels 7 have grooves 701 that contact the annular raceway 602 protruding from the ring rail 6. The fan-shaped slides 8 are mounted on the ring rail 6 via four fan-shaped guide wheels 7 and can slide circumferentially along the ring rail 6. The fan-shaped plates 9 have arc-shaped grooves 901 on their inner sides and are fixedly connected to the fan-shaped slides 8. The fan-shaped motor bases 10 are fixedly connected to the lower outer part of the fan-shaped plates 9. The motors 11 are fixedly connected to the lower end of the fan-shaped motor bases 10. The pinions 12 are fixedly connected to the output shaft of the motors 11 and mesh with the outer gear ring 601. The outer side of the rotary electric cylinder base 13 has a protrusion with a hinge hole 1301 for easy rotational connection with the sector plate 9. The lower inner side has a limiting post 1302 for sliding connection with the arc groove 901. The upper part has an electric cylinder slot 1304 for easy placement of the servo electric cylinder 14. The upper part of the electric cylinder slot 1304 has two guide holes 1303 on both sides for easy insertion of guide rods 15. The rotary electric cylinder base 13 is hinged to the sector plate 9 through the hinge hole 1301. The limiting post 1302 is located in the arc groove 901 of the sector plate 9 to limit the rotation angle of the rotary electric cylinder base 13. The servo electric cylinder 14 is located in the electric cylinder slot 1304 of the rotary electric cylinder base 13. There are two guide rods 15, one end of which is inserted into the guide hole 1303, and the other end is fixedly connected to the connecting plate 17 in the caliper device.

[0057] In this embodiment, the caliper device is fixedly connected to the other end of the guide rod 15 and connected to the telescopic rod 1401 of the servo cylinder 14. The servo cylinder 14 controls its horizontal disassembly movement relative to the ring rail 6. The caliper device includes a connecting rod 16, a connecting plate 17, an upper bending plate 18, a lower bending plate 19, a single-acting inlet-type cylinder 20, a sensor 21, an air pipe connector 22, a caliper needle sleeve 23, a caliper needle 24, a sliding shell 25, a second spring 26, a limit pin 27, and a proximity switch 28. One end of the connecting rod 16 is fixedly connected to the telescopic rod 1401 of the servo cylinder 14, and the other end is fixedly connected to the connecting plate 17. The connecting plate 17 has a caliper plate at its upper end. Some mounting slots are fixedly connected to the other end of the guide rod 15; the upper curved plate 18 and the lower curved plate 19 are respectively fixedly connected to the upper and lower ends of the connecting plate 17; the single-acting introduction type cylinder 20 is vertically fixedly connected to the upper curved plate 18, and has an elastic element 2002 inside. The elastic element 2002 is connected to the cylinder extension rod 2001. The elastic element 2002 is in a compressed state when the cylinder is vented and in an extended state when the cylinder is devented. The upper end of the single-acting introduction type cylinder 20 has a fine air hole 2003, which is connected to the atmosphere. The single-acting introduction type cylinder 20 has a sealing ring 2004 inside, which controls the extension rod 2001. The cylinder has an air seal; the air pipe connector 22 is located at the air inlet of the single-acting cylinder 20; the sensor 21 is fixed to the outside of the single-acting cylinder 20 to detect the position change of its extension rod 2001; the clamp needle sleeve 23 is a hollow shaft structure, with an eccentric stepped hole 2301 penetrating its center, and limit pin holes 2302 on both the front and rear sides of the lower end, and a shoulder 2303 near the upper end; the clamp needle sleeve 23 is vertically fixed to the lower end face of the lower bending plate 19 and is coaxial with the single-acting cylinder 20; the clamp needle 24 is an eccentric shaft structure with a threaded hole 2401 at the upper end, and the clamp needle 24 is threaded to the single-acting cylinder 20 through the threaded hole 2401. The lower end of the extension rod 2001 of the movable cylinder 20 moves vertically with the extension rod 2001; the upper end of the sliding shell 25 is provided with a flange 2501, and limit slots 2502 are opened on the front and rear sides. The sliding shell 25 is fitted onto the lower end of the pliers needle sleeve 23; the limit pin 27 is provided in the limit pin hole 2302 of the pliers needle sleeve 23, and limits the sliding shell 25 through the limit slot 2502; the second spring 26 is provided between the shoulder 2303 of the pliers needle sleeve 23 and the sliding shell 25; the proximity switch 28 is vertically fixed to the inner side of the lower bending plate 19, and its lower end face is directly facing the flange 2501 of the sliding shell 25, and there is a certain distance between it and the flange 2501;

[0058] Please see Figure 10-12 This embodiment describes a method for disassembling a disassembly device for a C-type retaining spring at the end of a rolling mill support roll. Taking the disassembly of a C-type retaining spring for holes as an example, the method and steps for disassembling the end C-type retaining spring are as follows:

[0059] Before the support roller is placed into the disassembly device, the lifting ring rail is in the raised state, the positioning device 3 is in the initial state, and the clamping device is in the standby state. At this time, the sliding shell 25 is subjected to the elastic force of the second spring 26, and its lower end extends out from the clamping pin sleeve 23. Restricted by the limiting pin 27, the flange 2501 of the sliding shell 25 moves away from the proximity switch 28. The single-acting introduction cylinder 20 is in the venting state. At this time, the extension rod 2001 of the single-acting introduction cylinder 20 is pushed back into the cylinder by the gas, driving the clamping pin 24 to retract into the clamping pin sleeve 23. The clamping pin 24 is in the standby state. After the support roller is positioned on the support base 1 by the movable V-block, the support roller and the lifting ring rail are coaxial. Driven by hydraulic cylinder 2, the lifting ring rail descends to the predetermined working position, and the caliper device enters the working state. In the working state, motor 11 drives the sliding disassembly unit to slide along the circumference of the ring rail 6. If the caliper device descends with the lifting ring rail to the upper surface of the C-type circumferential spring to be disassembled: at this time, the sliding housing 25 is lifted by the upper surface of the C-type circumferential spring to be disassembled, the lower end face of the caliper pin sleeve 23 contacts the upper surface of the C-type circumferential spring to be disassembled, and the flange 2501 of the sliding housing 25 moves upward toward the proximity switch 28. The proximity switch 28 outputs a signal, the control unit receives the signal and controls the air inlet of the single-acting inlet-type cylinder 20 to release air, and the elastic element 2002 inside it intends to... When the extension rod 2001 ejects the single-action guide cylinder 20, at this time, when the pliers 24 moves circumferentially with the caliper device to the disassembly hole of the C-type circumferential retaining ring to be disassembled, the extension rod 2001 of the single-action guide cylinder 20 pushes the pliers 24 out of the pliers pliers sleeve 23, and the pliers 24 falls into the disassembly hole of the C-type circumferential retaining ring to be disassembled; if the caliper device descends into the opening gap of the C-type circumferential retaining ring to be disassembled: at this time, the sliding housing 25 is not lifted, and the caliper device is in a standby state. As its circumferential movement continues, the caliper device in the opening gap of the C-type circumferential retaining ring to be disassembled will sweep past the edge of the opening to the upper surface of the C-type circumferential retaining ring to be disassembled, until the lower end of the pliers 24 falls into the disassembly hole; pliers 2 4. When the lower end falls into the disassembly hole, sensor 21 detects a change in the vertical position of the extension rod 2001 of the single-acting introduction cylinder 20, and sends a signal to the control unit to stop the motor 11, thus stopping the circumferential movement of the caliper device; at this time, the telescopic rod 1401 of the servo cylinder 14 extends, and simultaneously the motors 11 of the two sets of sliding disassembly units drive the sliding disassembly units to perform clockwise and counterclockwise circular movements respectively, and the rotatable cylinder seat 13 rotates clockwise and counterclockwise around the hinge hole 1301 until the limiting posts 1302 of the two sets of rotatable cylinder seats 13 are limited by the arc groove 901 of the sector plate 9, and the motor 11 stops moving. See Figure 12 (a)(b); During this period, the clamp needle 24 is always positioned in the disassembly hole of the C-type circumferential ...

[0060] Please see Figure 13The disassembly method for the C-type retaining ring at the end of the rolling mill support roll includes the following specific disassembly and positioning method for the two sets of sliding disassembly units:

[0061] The initial arrangement of two sets of caliper devices is 180° collinear. During the circular motion to locate the removal hole for the C-shaped retaining ring, both sets of sliding removal units move simultaneously clockwise (or counterclockwise). The lifting ring rail descends to the working position, i.e., the lower end face of the caliper pin sleeve 23 is flush with the upper surface of the C-shaped retaining ring to be removed. Both sets of caliper devices enter the working state. At this time, in both sets of caliper devices, the sliding housing 25 is lifted, and the pins 24 are retracted into the pin sleeve 23, meaning both sets of caliper devices have descended to contact the hole to be removed. Removing the upper surface of the C-type retaining ring: Both sets of sliding disassembly units simultaneously move clockwise (or counterclockwise) at a uniform speed until the pins 24 of one set of caliper devices extend from the pin sleeve 23, meaning the pins 24 of this set have fallen into the disassembly hole of the C-type retaining ring to be disassembled. At this point, the motor 11 of this set stops, and simultaneously the other set of sliding disassembly units performs counterclockwise (or clockwise) circular motion until the pins 24 of the other set of caliper devices extend from the pin sleeve 23, meaning the pins 24 of both sets of caliper devices have fallen into the disassembly hole of the C-type retaining ring to be disassembled. See... Figure 13 (a)(b)(c); Then proceed with the removal of the C-type retaining ring to be disassembled;

[0062] If, at this point, one set of sliding housings 25 is lifted while the other is not, and both sets of caliper pins 24 are retracted into their pin sleeves 23 (i.e., one set of caliper pins descends to contact the upper surface of the C-shaped retaining ring to be removed, and the other set falls into the gap of the C-shaped retaining ring to be removed), then both sets of sliding disassembly units simultaneously move clockwise (or counterclockwise) at a uniform speed until the pins 24 of both sets of caliper pins are extended from their pin sleeves 23, meaning both sets of pins have fallen into the disassembly holes of the C-shaped retaining ring to be removed. (See...) Figure 13 (d)(e)(f); then proceed with the removal of the C-type retaining ring to be disassembled;

[0063] If at this time, in one of the two sets of caliper devices, the sliding housing 25 is lifted and the caliper pin 24 retracts into the caliper pin sleeve 23, and the other set of sliding housing 25 is lifted and the caliper pin 24 extends out of the caliper pin sleeve 23, that is, one set of caliper devices descends to contact the upper surface of the C-type circlip to be removed, and the caliper pin 24 of the other set of caliper devices falls into the removal hole of the C-type circlip to be removed: the lifting ring rail rises a certain distance, so that the caliper device moves away from the C-type circlip to be removed, and then the two sets of sliding removal units move a small distance in the same direction, and the lifting ring rail is lowered to the working position again to carry out the removal work.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for disassembling C-type retaining rings at the ends of rolling mill support rolls, characterized in that, It includes a support positioning device for fixing the mill support roll, a lifting ring rail fixedly installed on the support positioning device, two sets of sliding disassembly units slidably installed on the lifting ring rail, and a clamp device correspondingly installed on the sliding disassembly unit for positioning the disassembly hole on the C-type snap ring to be disassembled; the lifting ring rail includes a circular ring rail (6), and each set of sliding disassembly units includes a fan-shaped slide (8) slidably installed on the ring rail (6) and a fan-shaped plate (9) fixedly installed on the fan-shaped slide (8). The fan-shaped plate (9) is provided with a rotatable electric cylinder seat (13) and a servo electric cylinder (14) clamped on the rotatable electric cylinder seat (13); Each caliper assembly includes a connecting plate (17) fixedly connected to the telescopic rod (1401) of the servo electric cylinder (14), and an upper curved plate (18), a lower curved plate (19), and a caliper pin (24) fixedly connected to the upper and lower ends of the connecting plate (17), respectively. The upper end face of the upper curved plate (18) is vertically fixedly connected to a single-acting lead-in cylinder (20), and the lower end face of the lower curved plate (19) is vertically fixedly connected to a caliper pin sleeve (23). The lower end of the caliper pin sleeve (23) is fitted with a sliding shell (25) that works in conjunction with the caliper pin sleeve (23). The single-acting cylinder (20) has an elastic element (2002) inside, which is connected to the extension rod (2001) of the single-acting cylinder (20). The upper end of the single-acting cylinder (20) has a fine air hole (2003) for connecting to the atmosphere. The single-acting cylinder (20) has a sealing ring (2004) inside for sealing the extension rod (2001). The air inlet of the single-acting cylinder (20) has an air pipe connector (22). The pincer sleeve (23) is a hollow shaft structure with an eccentric stepped hole (2301) through its center. Limit pin holes (2302) are opened on the front and rear sides of the lower end, and a shoulder (2303) is provided near the upper end. The pincer sleeve (23) is vertically fixed to the lower end face of the lower bending plate (19). The pin (24) is coaxial with the single-acting cylinder (20); the pin (24) is an eccentric shaft structure and is threaded to the lower end of the extension rod (2001) of the single-acting cylinder (20); the upper end of the sliding shell (25) is provided with a flange (2501), and the front and rear sides are provided with limit slots (2502) that are adapted to the limit pin hole (2302); a limit pin (27) is provided in the limit pin hole (2302) to limit the sliding shell (25) through the limit slot (2502); a second spring (26) is provided between the shoulder (2303) of the pin sleeve (23) and the sliding shell (25); the proximity switch (28) is vertically fixedly connected to the inner side of the lower bending plate (19), and its lower end face is facing the flange (2501) of the sliding shell (25), with a gap between it and the flange (2501).

2. The C-type retaining ring removal device at the end of the rolling mill support roll as described in claim 1, characterized in that, The support positioning device includes a support base (1), positioning devices (3) installed on both sides of the support base (1) for elastic positioning of the mill support roll, and hydraulic cylinders (2) installed on the outside of the positioning devices (3) for supporting the lifting ring rail. The support base (1) has a groove platform (101) in the center for placing the mill support roll. Each positioning device (3) includes a U-shaped slide (303) fixedly installed on both sides of the groove platform (101), a movable V-shaped block (301) slidably installed in the slide (303), and two first springs (302). One end of each first spring (302) is fixedly connected to the bottom side of the slide (303), and the other end is fixedly connected to the bottom side of the movable V-shaped block (301).

3. The C-type retaining ring removal device at the end of the rolling mill support roll as described in claim 2, characterized in that, The lifting ring rail also includes a spindle-shaped base plate (4) fixedly connected to two hydraulic cylinders (2) and multiple columns (5) evenly distributed around the ring rail (6) to support the base plate (4) and the ring rail (6); the lower end of the outer ring of the ring rail (6) is provided with an outer toothed ring (601), and the upper ends of the inner and outer rings are provided with raised annular raceways (602). The outer toothed ring (601) and the annular raceways (602) are used to cooperate with the sliding disassembly unit to slide smoothly along the ring rail (6).

4. The C-type retaining ring removal device at the end of the rolling mill support roll as described in claim 3, characterized in that, A fan-shaped motor base (10) for fixing the motor (11) is fixedly installed on the lower outer side of the fan-shaped plate (9). A small gear (12) that meshes with the external gear ring (601) and is fixedly connected to the output shaft of the motor is provided on the inner side of the fan-shaped motor base (10). A guide rod (15) for fixing the caliper device is slidably installed on the rotatable electric cylinder base (13) along the radial direction of the ring rail (6).

5. The C-type retaining ring removal device at the end of the rolling mill support roll as described in claim 4, characterized in that, Guide wheels (7) are fixedly installed at the four corners of the bottom of the fan-shaped slide (8). The guide wheels (7) have wheel grooves (701) that are compatible with the annular raceway (602). The inner side of the fan-shaped plate (9) has an arc groove (901) that facilitates the rotation of the rotatable electric cylinder seat (13). The rotatable electric cylinder seat (13) is L-shaped. The outer side protrusion has a hinge hole (1301) that facilitates the rotational connection with the fan-shaped plate (9). The lower inner side has a limiting post (1302) that is slidably connected with the arc groove (901). The upper part has an electric cylinder slot (1304) that facilitates the placement of the servo electric cylinder (14). The upper sides of the electric cylinder slot (1304) have guide holes (1303) that facilitate the insertion of the guide rod (15).

6. The disassembly method of the C-type retaining ring disassembly device at the end of the rolling mill support roll as described in claim 5, characterized in that, Includes the following steps: S1. Before the support roller is placed into the disassembly device, the lifting ring rail is in the raised state, the positioning device (3) is in the initial state, and the caliper device is in the standby state. S2. After the support roller is positioned on the support base (1) by the movable V-block, the support roller is coaxial with the lifting ring rail. The lifting ring rail is driven by the hydraulic cylinder (2) and descends to the predetermined working position, and the caliper device enters the working state. S3. In the working state, the motor (11) drives the sliding disassembly unit to slide around the circumference of the ring rail (6), so that the pliers (24) moves around the circumference of the pliers device to the disassembly hole of the C-type snap ring to be disassembled. S4. When the clamp needle (24) falls into the disassembly hole, the sensor (21) detects the position change of the single-acting introduction cylinder (20), and the control unit stops the motor (11), and the clamp device stops rotating; the extension rod (1401) of the servo electric cylinder (14) extends, and at the same time, the motors (11) of the two sets of sliding disassembly units drive the sliding disassembly units to make clockwise and counterclockwise circular motions respectively. The rotatable electric cylinder seat (13) rotates clockwise and counterclockwise around the hinge hole (1301) until the limiting post (1302) of the two sets of rotatable electric cylinder seats (13) is limited by the arc groove (901) of the fan plate (9), and the motor (11) stops moving; during this period, the clamp needle (24) is always positioned in the disassembly hole of the C-type circumferential ... S5. The hydraulic cylinder (2) drives the lifting ring rail to rise, bringing the caliper device and C-type circlip upward out of the support roller, and the circlip disassembly work is completed.

7. The disassembly method of the C-type retaining ring disassembly device at the end of the rolling mill support roll as described in claim 6, characterized in that, The disassembly and positioning of the two sets of sliding disassembly units specifically includes the following steps: S31. The initial arrangement of two sets of caliper devices is 180° collinear; when performing the circular motion to find the C-type circumferential retaining ring to be removed, the two sets of sliding removal units move clockwise or counterclockwise at the same time. S32. The lifting ring rail descends so that the clamp needle sleeve (23) is flush with the upper surface of the C-type snap ring, and the two sets of clamp devices enter the working state; if the sliding shell (25) is lifted and the clamp needle (24) retracts, the two sets of sliding disassembly units move clockwise or counterclockwise at a constant speed until one set of clamp needles (24) extends out and falls into the disassembly hole, and the motor (11) of that set stops; the other set continues to move counterclockwise or clockwise until the clamp needle (24) also extends out and falls into the disassembly hole, and then the C-type snap ring is disassembled; S33. If one set of sliding shells (25) is lifted while the other set is not lifted, and both pins (24) are retracted, the two sets of sliding disassembly units move clockwise or counterclockwise at a constant speed until the pins (24) extend and fall into the disassembly hole, and then the C-type retaining ring is disassembled. S34. If one set of sliding shells (25) is lifted and the pincers (24) retract, and another set is lifted and the pincers (24) extend, the lifting ring rail will first rise a certain distance, and after the two sets of sliding disassembly units move a short distance in the same direction, they will descend to the working position again to continue disassembly.

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