A pyramidal sleeve type of drum

Abstract

This invention relates to the field of steel rolling mill drum technology, specifically disclosing a pyramidal sleeve type drum, including a main shaft, tie rod, sector plate, large gear, pyramidal sleeve, thrust ring, I-beam block, dovetail key, dustproof device, expansion cylinder, adjusting shim, head support assembly, connecting body, coupling, and connecting shaft. The head support assembly includes end caps, covers, pins, custom screws, set screws, locating pins, several types of spacers, head bearings, support sleeves, sliding sleeve one, sliding sleeve two, adjusting nut one, adjusting nut two, adjusting nut three, washers, fasteners, and oil cups. This invention eliminates the traditional pyramidal sleeve type drum structure where the tie rod passes through key components to transmit axial force, increasing the strength of key components such as the main shaft, sector plate, and pyramidal sleeve, thus improving the product's service life.

Description

Technical Field

[0001] This invention relates to the field of steel rolling coil equipment technology, specifically a pyramidal sleeve type coil. Background Technology

[0002] Currently, the rolling drum is a core piece of equipment in steel mills. Only by ensuring that there are operable rolling drums on the production line can the normal operation of the steel mill be maintained. Its high precision requirements and complex structure make it difficult to disassemble and repair the rolling drum on-site after a problem occurs. It is necessary to entrust a professional manufacturer to repair it. It is necessary for professional manufacturers to repair the rolling drum regularly. However, considering production efficiency and usage costs, it is more in line with actual production needs for the steel mill to handle some common problems on-site, or for the steel mill to prepare spare parts for key parts so that they can be replaced in time when problems occur on-site.

[0003] The pyramidal sleeve type drum, mainly composed of a main shaft, pyramidal sleeve, tie rod, sector plate, head support device (including head bearing), and expansion cylinder (including rotary joint), is the most common type of drum. Due to its simple structure and good strength and rigidity, it is widely used in various units, and its internal structure varies considerably. However, the existing pyramidal sleeve type drum has two main drawbacks:

[0004] First: Due to the presence of the head bearing, it is difficult to disassemble and assemble the pyramidal sleeve on the steel plant site. In some cases, due to structural design reasons, it is even difficult to disassemble and assemble the sector plate of some drums. Therefore, it is impossible to replace key parts and handle common problems on site.

[0005] Second: In order to achieve the expansion and contraction of the traditional pyramidal sleeve type drum, a key that plays a transmission role is passed between the pyramidal sleeve, the tie rod, and the main shaft. This will greatly reduce the strength of key components such as the pyramidal sleeve, the tie rod, and the main shaft. Therefore, we propose a pyramidal sleeve type drum. Summary of the Invention

[0006] The purpose of this invention is to provide a pyramidal sleeve-type reel that solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pyramidal sleeve type drum, comprising a main shaft, a tie rod, a sector plate, a large gear, a pyramidal sleeve, a thrust ring, an I-shaped block, a dovetail key, a dustproof device, an expansion cylinder, an adjusting shim, a head support assembly, a connecting body, a coupling, and a connecting shaft. The head support assembly includes an end cover, a cover, a pin, a custom screw, a set screw, a positioning pin, several types of spacers, a head bearing, a support sleeve, a sliding sleeve one, a sliding sleeve two, an adjusting nut one, an adjusting nut two, an adjusting nut three, a washer, a fastener, and an oil cup.

[0008] The spindle has a through hole inside, the tie rod is located inside the through hole of the spindle, the large gear is fixed to the outside of the spindle by a lock nut, the spindle is connected to the expansion cylinder by a connecting body, the connecting body has a window in the middle, the adjusting shim is set between the connecting body and the expansion cylinder, one end of the tie rod is coaxially connected to the connecting shaft by a coupling, the connecting shaft is coaxially connected to the piston rod of the expansion cylinder, and the other end of the tie rod is connected to the sliding sleeve by adjusting nut three, adjusting nut two, and adjusting nut one.

[0009] Slide sleeve one is fixedly connected to one end of the pyramid sleeve by fasteners. Transition holes are symmetrically opened on the outer surface of slide sleeve one. Slide sleeve two is sleeved outside slide sleeve one. Pins are symmetrically arranged on the outer surface of slide sleeve two. Slots are symmetrically opened on the outer surface of the end of the spindle close to slide sleeve two. The pin passes through the transition hole of slide sleeve one and is embedded in the slot of the spindle. A custom screw is set inside the pin. A threaded hole is opened in the slot of the spindle. The custom screw is threadedly connected to the threaded hole in the slot of the spindle.

[0010] A thrust ring is snapped into the middle of the spindle. An I-shaped block is set between the thrust ring and the sector plate. A dovetail key is installed on the inner wall of the sector plate by bolts. A pyramid sleeve is fitted on the outside of the spindle. A keyway matching the dovetail key is opened on the outer surface of the pyramid sleeve. The dovetail key of the sector plate is embedded and connected to the corresponding keyway of the pyramid sleeve.

[0011] The end cap is coaxially connected to the support sleeve by bolts. The end of the support sleeve opposite to the end cap is coaxially connected to the cap by bolts. The head bearing is located between the support sleeve and the sliding sleeve.

[0012] An oil cup is provided at one end of the sliding sleeve;

[0013] There are four sector plates, which are arranged around the outside of the pyramid sleeve. The end faces of both ends of the sector plates are provided with skirts, which are wavy in shape. The dustproof device is set between the connection points of two adjacent sector plates.

[0014] In a preferred embodiment of the technical solution of this application, the third adjusting nut is disposed on the inner side of the first sliding sleeve, and the second adjusting nut and the first adjusting nut are disposed on the outer side of the first sliding sleeve. A washer is disposed between the first adjusting nut and the second adjusting nut. The set screw passes vertically through the third adjusting nut and is threadedly connected to the pull rod. The positioning pin passes horizontally through the third adjusting nut and is threadedly connected to the first sliding sleeve.

[0015] As a preferred embodiment of the technical solution of this application, the first sliding sleeve is provided with a grease channel, which leads to the main shaft and the second sliding sleeve respectively, and the oil cup is set at the inlet end of the grease channel.

[0016] As a preferred embodiment of the technical solution of this application, the dustproof device includes two staggered baffles, which are respectively disposed on the two side wall surfaces at the connection of two adjacent sector plates.

[0017] As a preferred embodiment of the technical solution of this application, the inner wall of the support sleeve is provided with a number of spacers, and the number of head bearings is a number, with the spacers disposed between two adjacent head bearings.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The technical solution of this application eliminates the traditional pyramidal sleeve type drum structure that transmits axial force through key parts via a pull key, thereby increasing the strength of key parts such as the main shaft, sector plate, and pyramidal sleeve, and improving the service life of the product.

[0020] 2. The technical solution of this application, through a unique design of the head support assembly, enables the entire head support assembly to be quickly disassembled as a whole, facilitating the handling of common on-site problems and the replacement of key parts with spare parts, while also reducing the labor intensity of on-site personnel.

[0021] 3. The technical solution of this application sets up a connecting body structure with a window, which can be used to check the looseness of the threads of the internal coupling and connecting shaft, and also facilitates disassembly and assembly.

[0022] 4. The technical solution of this application has an adjustment pad designed at the connection between the connector and the expansion cylinder. The cumulative error of the parts can be adjusted by increasing or decreasing the thickness. When used in conjunction with the adjusting nut of the head support assembly, it can ensure that the size of the drum and the stroke of the cylinder are matched. Attached Figure Description

[0023] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a partial cross-sectional view of a pyramidal sleeve-type drum according to the present invention;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of a pyramidal sleeve-type drum according to the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the fan-shaped plate skirt of the present invention;

[0027] Figure 4 This is a schematic diagram of the pyramidal sleeve of the present invention;

[0028] Figure 5 This is a schematic diagram of the dovetail key structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the thrust ring structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the I-shaped block of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the sector-shaped plate of the present invention;

[0032] Figure 9 This is a schematic diagram of the assembly of the sector plate of the present invention;

[0033] Figure 10 This is a partial cross-sectional view of the pyramidal sleeve, sector plate, and thrust ring of the present invention.

[0034] In the diagram: 1. End cap; 2. Support sleeve; 3. Oil cup; 4. Set screw; 5. Head bearing; 6. Spacer; 7. Cover; 8. Fastener; 9. Pyramidal sleeve; 10. Sector plate; 11. Dovetail key; 12. I-beam block; 13. Thrust ring; 14. Main shaft; 15. Tie rod; 16. Large gear; 17. Connecting body; 18. Coupling; 19. Connecting shaft; 20. Adjusting shim; 21. Expansion cylinder; 22. Pin; 23. Custom screw; 24. Sliding sleeve two; 25. Sliding sleeve one; 26. Adjusting nut three; 27. Locating pin; 28. Washer; 29. ​​Adjusting nut two; 30. Adjusting nut one; 31. Dustproof device. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Example 1, such as Figure 1-10 As shown, the present invention provides a technical solution: a pyramidal sleeve type drum, including a main shaft 14, a tie rod 15, a sector plate 10, a large gear 16, a pyramidal sleeve 9, a thrust ring 13, an I-shaped block 12, a dovetail key 11, a dustproof device 31, an expansion cylinder 21, an adjusting shim 20, a head support assembly, a connecting body 17, a coupling 18, and a connecting shaft 19. The head support assembly includes an end cover 1, a cover 7, a pin 22, a custom screw 23, a set screw 4, a positioning pin 27, several types of spacers 6, a head bearing 5, a support sleeve 2, a sliding sleeve 1 25, a sliding sleeve 24, an adjusting nut 1 30, an adjusting nut 29, an adjusting nut 3 26, a washer 28, a fastener 8, and an oil cup 3.

[0037] The spindle 14 has a through hole inside, and the pull rod 15 is located inside the through hole of the spindle 14. The large gear 16 is fixed to the outside of the spindle 14 by a locking nut. The spindle 14 is connected to the expansion cylinder 21 through the connecting body 17. The connecting body 17 has a window in the middle. The adjusting shim 20 is set between the connecting body 17 and the expansion cylinder 21. One end of the pull rod 15 is coaxially connected to the connecting shaft 19 through the coupling 18. The connecting shaft 19 is coaxially connected to the piston rod of the expansion cylinder 21. The other end of the pull rod 15 is connected to the sliding sleeve 25 through the adjusting nut 3 26, adjusting nut 29, and adjusting nut 1 30.

[0038] Sliding sleeve 1 25 is fixedly connected to one end of pyramid sleeve 9 by fastener 8. Transition holes are symmetrically opened on the outer surface of sliding sleeve 1 25. Sliding sleeve 24 is sleeved on the outside of sliding sleeve 1 25. Pins 22 are symmetrically arranged on the outer surface of sliding sleeve 24. Slots are symmetrically opened on the outer surface of the end of spindle 14 near sliding sleeve 24. Pins 22 pass through the transition hole of sliding sleeve 1 25 and are embedded in the slot of spindle 14. Custom screws 23 are provided inside pins 22. Threaded holes are opened in the slot of spindle 14. Custom screws 23 are threadedly connected to the threaded holes in the slot of spindle 14.

[0039] A thrust ring 13 is snapped into the middle of the spindle 14. An I-shaped block 12 is provided between the thrust ring 13 and the sector plate 10. A dovetail key 11 is installed on the inner wall of the sector plate 10 by bolts. A pyramidal sleeve 9 is sleeved on the outside of the spindle 14. A keyway matching the dovetail key 11 is opened on the outer surface of the pyramidal sleeve 9. The dovetail key 11 of the sector plate 10 is embedded and connected to the corresponding keyway of the pyramidal sleeve 9.

[0040] End cap 1 is coaxially connected to support sleeve 2 by bolts. One end of support sleeve 2 away from end cap 1 is coaxially connected to cap 7 by bolts. Head bearing 5 is located between support sleeve 2 and sliding sleeve 24.

[0041] An oil cup 3 is provided at one end of the sliding sleeve 25;

[0042] There are four sector plates 10, which are arranged around the outside of the pyramid sleeve 9. The end faces of both ends of the sector plates 10 are provided with skirts, which are wavy in shape. The dustproof device 31 is provided between the connection points of two adjacent sector plates 10.

[0043] In a specific embodiment of the present invention, the expansion and contraction movement of the pyramidal sleeve drum is achieved by the expansion and contraction cylinder 21 pushing and pulling the tie rod 15. Its rotational movement is achieved by the transmission system in the uncoiler driving the large gear 16 mounted on the main shaft 14 to rotate. This principle is the general principle of pyramidal sleeve drums. The main shaft 14 and the expansion and contraction cylinder 21 are connected by a connecting body 17. A connecting shaft 19 is mounted on the piston rod of the expansion and contraction cylinder 21. The connecting shaft 19 is connected to the tie rod 15 by a coupling 18. The connecting body 17 has a window to check the looseness of the threads of the internal coupling 18 and the connecting shaft 19, and also facilitates disassembly and assembly. An adjusting shim 20 is installed between the connecting body 17 and the expansion and contraction cylinder 21. By changing the thickness of the adjusting shim 20, machining errors of various parts can be compensated. The difference ensures that the size of the drum matches the stroke of the expansion cylinder 21. The sector plates 10 have a skirt design with interlocking wavy patterns, effectively preventing the strip edge from inserting into the gaps between the sector plates 10. Simultaneously, a dustproof device 31 is designed between the sector plates 10. The dustproof device 31 consists of staggered baffles. When two adjacent sector plates 10 unfold, the staggered baffles can block the gaps created during unfolding, effectively preventing dust, rust, and other foreign matter from entering the drum, thereby improving the drum's service life. A thrust ring 13 is installed on the main shaft 14, and an I-shaped block 12 is installed between the thrust ring 13 and the sector plates 10. When the drum expands or contracts, the thrust ring 13, in conjunction with the I-shaped block 12, restricts the axial movement of the sector plates 10. Figure 6-8As shown, the thrust ring 13 has a T-slot one, and the sector plate 10 has a T-slot two. Both the T-slot one of the thrust ring 13 and the T-slot two of the sector plate 10 contain the same I-shaped block 12, thus restricting the axial rotation of the sector plate 10 and allowing it to move only radially along the I-shaped block 12. A dovetail key 11 is mounted on the sector plate 10, and a pyramidal sleeve 9 is mounted on the spindle 14. The pyramidal sleeve 9 also has a keyway corresponding to the dovetail key 11. The keyway 11 ensures that the sector plate 10 and the pyramid sleeve 9 always maintain a beveled fit. The thrust ring 13, in conjunction with the I-shaped block 12, can axially limit the sector plate 10, ensuring that the axial movement of the pyramid sleeve 9 is converted into the radial movement of the sector plate 10. The second sliding sleeve 24 is relatively stationary with respect to the main shaft 14. The first sliding sleeve 25 is driven by the pull rod 15 and slides relative to the main shaft 14. The first sliding sleeve 25 is designed with a grease channel and is equipped with an oil cup 3. By adding grease, the grease flows through the grease channel to the contact surfaces of the main shaft 14, the second sliding sleeve 24, and the first sliding sleeve 25, ensuring that they are in a good lubricated state. Adjusting nuts 1 30, 29, and 3 26 are installed on the pull rod 15, respectively at both ends of the first sliding sleeve 25. During installation, the relative position of the first sliding sleeve 25 with the pull rod 15 is adjusted by the three adjusting nuts, which can also adjust the size of the drum. After the general size is adjusted, fine adjustments are made by adjusting shims. The third adjusting nut 26 is positioned by the set screw 4 and the positioning pin 27 to prevent the threads from loosening. The first adjusting nut 30 and the second adjusting nut 29 are anti-loosening in the form of double nuts and washers 28. The end cover 1, head bearing 5, several types of spacers 6, cover 7, support sleeve 2, and other parts are all installed on the second sliding sleeve 24. The cover 7 has a hole, which is vertically aligned with the installation position of the pin 22, which facilitates the installation of the pin 22 and the custom screw 23.

[0044] In the preferred technical solution, adjusting nut 3 26 is located inside the sliding sleeve 1 25, adjusting nut 2 29 and adjusting nut 30 are both located outside the sliding sleeve 1 25, a washer 28 is provided between adjusting nut 30 and adjusting nut 2 29, a set screw 4 is vertically inserted through adjusting nut 3 26 and threadedly connected to the pull rod 15, and a positioning pin 27 is horizontally inserted through adjusting nut 3 26 and threadedly connected to the sliding sleeve 1 25. Adjusting nut 3 26 is positioned by the set screw 4 and the positioning pin 27 prevents the threads from loosening.

[0045] In the preferred technical solution, the first sliding sleeve 25 is provided with a grease channel, which leads to the main shaft 14 and the second sliding sleeve 24 respectively. The oil cup 3 is set at the inlet end of the grease channel. By adding grease, the grease flows through the grease channel to the contact surface of the main shaft 14, the second sliding sleeve 24 and the first sliding sleeve 25, ensuring that they are in a good lubricated state.

[0046] In the preferred technical solution, the dustproof device 31 includes two staggered baffles. The two baffles are respectively disposed on the two side wall surfaces at the connection of two adjacent sector plates 10. When the two adjacent sector plates 10 are unfolded, the staggered baffles can block the gaps generated by the unfolding, which can effectively prevent dust, rust on the strip and other foreign objects from entering the inside of the drum, thereby improving the service life of the drum.

[0047] In the preferred technical solution, the inner wall of the support sleeve 2 is provided with a number of spacers 6, and the number of head bearings 5 ​​is a number. The spacers 6 are arranged between two adjacent head bearings 5. The spacers 6 are used to separate the head bearings 5 ​​and ensure the stability of the position of the head bearings 5.

[0048] In summary, the head support assembly can be disassembled without reducing the strength of key components such as the spindle 14, the pyramidal sleeve 9, and the tie rod 15. The movement of the tie rod 15 drives the sliding sleeve 25, which in turn drives the pyramidal sleeve 9 to move axially. At the same time, by loosening the custom screw 23 through the hole on the cover 7 and removing the pin 22, the entire head support assembly except for the sliding sleeve 25 can be disassembled together, facilitating quick on-site replacement of key components.

Claims

1. A pyramidal sleeve-type reel, characterized in that: Includes a main shaft (14), a tie rod (15), a sector plate (10), a large gear (16), a pyramidal sleeve (9), a thrust ring (13), an I-shaped block (12), a dovetail key (11), a dustproof device (31), an expansion cylinder (21), an adjusting pad (20), a head support assembly, a connecting body (17), a coupling (18), and a connecting shaft (19). The head support assembly includes an end cap (1), a cover (7), a pin (22), a custom screw (23), a set screw (4), a positioning pin (27), several types of spacers (6), a head bearing (5), a support sleeve (2), a sliding sleeve one (25), a sliding sleeve two (24), an adjusting nut one (30), an adjusting nut two (29), an adjusting nut three (26), a washer (28), a fastener (8), and an oil cup (3). The main shaft (14) has a through hole inside, the pull rod (15) is located inside the through hole of the main shaft (14), the large gear (16) is fixed to the outside of the main shaft (14) by a locking nut, the main shaft (14) is connected to the expansion cylinder (21) through a connecting body (17), the connecting body (17) has a window in the middle, the adjusting pad (20) is set between the connecting body (17) and the expansion cylinder (21), one end of the pull rod (15) is coaxially connected to the connecting shaft (19) through a coupling (18), the connecting shaft (19) is coaxially connected to the piston rod of the expansion cylinder (21), and the other end of the pull rod (15) is connected to the sliding sleeve (25) through adjusting nut three (26), adjusting nut two (29), adjusting nut one (30); The first sliding sleeve (25) is fixedly connected to one end of the pyramid sleeve (9) by fastener (8). The outer surface of the first sliding sleeve (25) has symmetrical transition holes. The second sliding sleeve (24) is sleeved on the outside of the first sliding sleeve (25). The outer surface of the second sliding sleeve (24) has symmetrical pins (22). The outer surface of the main shaft (14) near the second sliding sleeve (24) has symmetrical slots. The pins (22) pass through the transition holes of the first sliding sleeve (25) and are embedded in the slots of the main shaft (14). The pins (22) have custom screws (23) inside. The slots of the main shaft (14) have threaded holes. The custom screws (23) are threadedly connected to the threaded holes in the slots of the main shaft (14). A thrust ring (13) is snapped into the middle of the spindle (14). An I-shaped block (12) is provided between the thrust ring (13) and the sector plate (10). A dovetail key (11) is installed on the inner wall of the sector plate (10) by bolts. A pyramid sleeve (9) is sleeved on the outside of the spindle (14). A keyway matching the dovetail key (11) is opened on the outer surface of the pyramid sleeve (9). The dovetail key (11) of the sector plate (10) is embedded and connected to the corresponding keyway of the pyramid sleeve (9). The end cap (1) is coaxially connected to the support sleeve (2) by bolts. The end of the support sleeve (2) away from the end cap (1) is coaxially connected to the cap (7) by bolts. The head bearing (5) is located between the support sleeve (2) and the sliding sleeve (24). An oil cup (3) is provided at one end of the sliding sleeve (25); The number of the sector plates (10) is four, and the four sector plates (10) are arranged around the outside of the pyramid sleeve (9). The end faces of the sector plates (10) are provided with skirts, and the skirts are wavy. The dustproof device (31) is arranged between the connection points of two adjacent sector plates (10). The third adjusting nut (26) is located inside the first sliding sleeve (25), the second adjusting nut (29) and the first adjusting nut (30) are both located outside the first sliding sleeve (25), a washer (28) is provided between the first adjusting nut (30) and the second adjusting nut (29), the set screw (4) is vertically inserted through the third adjusting nut (26) and threadedly connected to the pull rod (15), and the positioning pin (27) is horizontally inserted through the third adjusting nut (26) and threadedly connected to the first sliding sleeve (25); The inner wall of the support sleeve (2) is provided with a number of spacers (6), and the number of head bearings (5) is a number. The spacers (6) are provided between two adjacent head bearings (5).

2. The pyramidal sleeve-type drum according to claim 1, characterized in that: The first sliding sleeve (25) has a grease channel, which leads to the main shaft (14) and the second sliding sleeve (24) respectively. The oil cup (3) is located at the inlet end of the grease channel.

3. The pyramidal sleeve-type drum according to claim 1, characterized in that: The dustproof device (31) includes two staggered baffles, which are respectively disposed on the two side wall surfaces at the connection of two adjacent sector plates (10).

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