Composite casting roller with detachable structure
By combining a worm gear, worm wheel, and threaded rod, the composite casting roll can be quickly disassembled and installed, solving the problems of low efficiency and poor reliability of traditional composite casting rolls, improving disassembly efficiency and reliability, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional composite casting rolls use multiple sets of bolts to disassemble the roll sleeve, which is inefficient, unreliable, and has high maintenance costs. Frequent disassembly and assembly also leads to a decrease in bolt preload, making them prone to fatigue fracture.
It adopts a combination structure of worm, worm wheel, threaded rod and limit block. The worm is driven to rotate by a hex wrench, which drives the worm wheel and threaded rod to rotate, so as to realize the disengagement of the limit block and the quick disassembly of the roll sleeve, replacing the traditional bolt connection.
It improves disassembly and installation efficiency, enhances reliability, reduces maintenance costs, and avoids the risks of bolt preload decay and fatigue fracture.
Smart Images
Figure CN224114875U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite casting rolls, specifically to a composite detachable structure casting roll. Background Technology
[0002] Composite casting rolls are roll components that combine a high-performance outer working layer with a high-strength inner support layer through a composite design of structure and materials. They are used to achieve efficient forming of metal billets in continuous casting and rolling processes with high temperature, high pressure, and high wear, and combine wear resistance, thermal crack resistance, high strength, and economy.
[0003] Traditional composite cast rolls use multiple sets of bolts to disassemble the roll sleeve. Although the structure is simple, it has many drawbacks in practical applications, such as low efficiency, poor reliability, and high maintenance costs. Moreover, frequent disassembly and assembly leads to a decrease in bolt preload, which can easily cause fatigue fracture under rolling impact loads.
[0004] Therefore, it is necessary to invent a composite detachable structure casting roll to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a composite detachable cast roll. When the roll sleeve needs to be disassembled, the bolts on the outside of the mounting ring and the roll mandrel are unscrewed, and the mounting ring is removed from the limiting roller shaft. Then, a hexagonal wrench is inserted into the hexagonal groove at the front end of the worm gear and rotated, causing the worm gear to rotate and drive the upper worm wheel to rotate. The worm wheel then drives the internal threaded rod to rotate, while the threads on both sides of the threaded rod are tapped in opposite directions. This causes the threaded rod to drive the external limiting block to extend and retract backward, allowing the limiting block to disengage from the slider inside the roll sleeve. Finally, the roll sleeve is pulled out from the roll mandrel for disassembly. This solves the problem mentioned in the background art of using multiple sets of bolts to disassemble the roll sleeve in traditional composite cast rolls. Although the structure is simple, it suffers from multiple defects in practical applications, such as low efficiency, poor reliability, and high maintenance costs. Moreover, frequent disassembly and assembly lead to the attenuation of bolt preload, which can easily cause fatigue fracture under rolling impact loads.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite detachable structure cast roll, including a roll sleeve;
[0007] A roll mandrel is installed inside a roll sleeve. A slider is fixedly connected inside the roll sleeve. A limit groove is opened inside the slider. A sliding groove is opened on the outside of the roll mandrel. Limiting rolls are fixed at both ends of the roll mandrel. Cooling fluid channels are opened inside the limiting rolls.
[0008] The worm gears are rotatably connected to both ends of the roll mandrel. The outer end surface of the worm gear has a hexagonal groove. A worm wheel is externally meshed above the worm gear. A threaded rod is fixedly connected inside the worm wheel. A limit block is externally threaded to the threaded rod. Threaded holes are opened on both sides of both ends of the roll mandrel. An installation ring is movably fitted on the outside of the limit roll shaft. Bolts are threaded through both sides of the installation ring.
[0009] Preferably, two sets of sliders are respectively provided on the upper and lower sides inside the roll sleeve, and the roll sleeve is limited to sliding with the roll mandrel by the sliders.
[0010] Preferably, the worm gear is provided in two sets, and the two sets of worm gears are symmetrically arranged around the central axis of the end face of the roll mandrel.
[0011] Preferably, the threads on both sides of the outer side of the threaded rod are tapped in opposite directions, and the limiting block is square in shape.
[0012] Preferably, the limiting block is slidably connected to the roll mandrel, and the limiting block is movably engaged with the limiting groove opened on the surface of the slider.
[0013] Preferably, the inner diameter of the mounting ring matches the outer diameter of the limiting roller shaft, and the mounting ring is threadedly connected to the roll mandrel by bolts.
[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0015] This invention improves both disassembly and installation efficiency through the arrangement of a roll sleeve, roll mandrel, worm gear, hexagonal groove, worm wheel, threaded rod, limiting block, threaded hole, mounting ring, and bolts. When the roll sleeve needs to be disassembled, the bolts on the outside of the mounting ring and roll mandrel are unscrewed, and the mounting ring is removed from the limiting roller shaft. Then, a hexagonal wrench is inserted into the hexagonal groove at the front end of the worm gear and rotated, causing the worm gear to rotate, which in turn drives the worm wheel above to rotate, causing the worm wheel to rotate, which in turn drives the internal threaded rod to rotate. Since the threads on both sides of the threaded rod are tapped in opposite directions, the threaded rod drives the external limiting block to extend and retract backward, allowing the limiting block to disengage from the slider inside the roll sleeve. Finally, the roll sleeve is pulled out from the roll mandrel for disassembly. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the roller sleeve structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the roll mandrel structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the limiting block structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the mounting ring structure of this utility model.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Roll sleeve; 2. Slider; 3. Limiting groove; 4. Roll mandrel; 5. Slide groove; 6. Limiting roller shaft; 7. Coolant channel; 8. Worm; 9. Hexagonal groove; 10. Worm wheel; 11. Threaded rod; 12. Limiting block; 13. Threaded hole; 14. Mounting ring; 15. Bolt. Detailed Implementation
[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0025] This utility model provides, for example Figure 1-5 The composite detachable structure of the cast roll shown includes a roll sleeve 1;
[0026] The roll mandrel 4 is installed inside the roll sleeve 1. The roll sleeve 1 is fixedly connected to the slider 2. The slider 2 has a limit groove 3 inside. The roll mandrel 4 has a sliding groove 5 on the outside. The two ends of the roll mandrel 4 are fixed to the limit roller 6. The limit roller 6 has a coolant channel 7 inside.
[0027] Worms 8 are rotatably connected to both ends of the roll mandrel 4. A hexagonal groove 9 is formed on the outer surface of the worm 8. A worm wheel 10 is externally meshed above the worm 8. A threaded rod 11 is fixedly connected inside the worm wheel 10. A limit block 12 is threadedly connected to the external thread of the threaded rod 11. Threaded holes 13 are formed on both sides of both ends of the roll mandrel 4. An installation ring 14 is movably fitted onto the outside of the limit roll shaft 6. Bolts 15 are threaded through both sides of the installation ring 14. When it is necessary to disassemble the roll sleeve 1, the installation ring 14 is connected to the roll mandrel 4. Unscrew the bolts 15 on the outside of shaft 4, then remove the mounting ring 14 from the limiting roller shaft 6. Next, use a hex wrench to insert into the hexagonal groove 9 at the front end of the worm 8 and rotate it, so that the worm 8 rotates and drives the upper worm wheel 10 to rotate, so that the worm wheel 10 drives the internal threaded rod 11 to rotate. The threads on the two sides of the threaded rod 11 are tapped in opposite directions, so that the threaded rod 11 drives the external limiting block 12 to extend and retract backward, so that the limiting block 12 disengages from the slider 2 inside the roll sleeve 1. Finally, pull the roll sleeve 1 out of the roll core shaft 4 and disassemble it.
[0028] like Figure 1 and Figure 2 As shown, two sets of sliders 2 are respectively arranged on the upper and lower sides inside the roll sleeve 1. The roll sleeve 1 is limited to sliding with the roll mandrel 4 by the sliders 2. The sliders 2 inside the roll sleeve 1 are aligned with the groove 5 outside the roll mandrel 4 for limited sliding, thereby strengthening the firmness between the roll sleeve 1 and the roll mandrel 4.
[0029] like Figure 3 As shown, there are two sets of worm gears 8. The two sets of worm gears 8 are symmetrically arranged around the central axis of the end face of the roll mandrel 4. Worms 8 are arranged on both the upper and lower sides of the end face of the roll mandrel 4, so that rotating the worm gear 8 drives the worm wheel 10 and the internal threaded rod 11 to rotate, and the threaded rod 11 pushes the external limiting block 12 to limit and fix the sliders 2 on the upper and lower sides inside the roll sleeve 1.
[0030] like Figure 4 As shown, the threads on both sides of the outer threaded rod 11 are tapped in opposite directions, and the limiting block 12 is square. The rotation of the worm 8 drives the worm 8 and the inner threaded rod 11 to rotate. Since the threads on both sides of the outer threaded rod 11 are tapped in opposite directions, when the threaded rod 11 rotates, it pushes the outer square limiting block 12 to be inserted into the limiting groove 3 opened in the inner limiting block 12.
[0031] like Figure 3 and Figure 4 As shown, the limiting block 12 is slidably connected to the roll mandrel 4, and the limiting block 12 is movably engaged with the limiting groove 3 opened on the surface of the slider 2. The limiting block 12 rotates through the threaded rod 11, thereby limiting and sliding within the roll mandrel 4, allowing the limiting block 12 to extend and retract and insert into the limiting groove 3 inside the slider 2 to limit and fix the roll sleeve 1. Compared with the traditional threaded fixing, this is more efficient.
[0032] like Figure 1 and Figure 5 As shown, the inner diameter of the mounting ring 14 matches the outer size of the limiting roller shaft 6. The mounting ring 14 is threaded to the roll core shaft 4 by bolts 15. The roll sleeve 1 is fitted over the limiting roller shaft 6. Then, the bolts 15 pass through the mounting ring 14 and the roll core shaft 4, thereby strengthening the connection between the roll sleeve 1 and the roll core shaft 4.
[0033] The working principle of this practical application is as follows: First, when installing the roll sleeve 1, align the sliders 2 on the upper and lower sides inside the roll sleeve 1 with the roll mandrel 4 outside the roll mandrel 4 and push them in. The sliders 2 and the grooves 5 strengthen the firmness between the roll sleeve 1 and the roll mandrel 4. Next, take a hexagonal wrench and insert it into the hexagonal groove 9 outside the worm 8 inside the roll mandrel 4. Then, rotate the hexagonal wrench to drive the worm 8 to rotate, so that the worm 8 meshes and drives the upper worm wheel 10 to rotate. The rotation of the worm wheel 10 drives the internal threaded rod 11 to rotate. The threads on both sides of the threaded rod 11 tap in opposite directions, so that the threaded rod 11 pushes the limit blocks 12 at both ends to extend and retract from inside the roll mandrel 4. The limiting block 12 is inserted into the limiting groove 3 in the slider 2 inside the roll sleeve 1 to strengthen the firmness between the roll sleeve 1 and the roll mandrel 4. Finally, the mounting ring 14 is put on the outside of the limiting roller shaft 6, so that the mounting ring 14 is attached to both sides of the roll mandrel 4. The mounting ring 14 is equipped with a sealing element to enhance the sealing performance. Then, the bolt 15 is used to thread and fix the mounting ring 14 to the end face of the roll mandrel 4. Then, the entire composite cast roll is installed on the equipment for operation. When it is necessary to disassemble and replace the roll sleeve 1, the above steps can be reversed for quick replacement. In this way, the use process of the composite detachable structure cast roll is completed.
[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A composite detachable structure casting roll, characterized in that: Including the roll sleeve (1); A roll mandrel (4) is installed inside a roll sleeve (1). A slider (2) is fixedly connected inside the roll sleeve (1). A limiting groove (3) is opened inside the slider (2). A sliding groove (5) is opened on the outside of the roll mandrel (4). A limiting roller (6) is fixed at both ends of the roll mandrel (4). A coolant channel (7) is opened inside the limiting roller (6). The worm (8) is rotatably connected to both ends of the roll mandrel (4). The outer end surface of the worm (8) is provided with a hexagonal groove (9). The worm wheel (10) is externally meshed above the worm (8). The threaded rod (11) is fixedly connected inside the worm wheel (10). The threaded rod (11) is externally threaded with a limit block (12). The two ends of the roll mandrel (4) are provided with threaded holes (13). The limit roller (6) is externally fitted with an installation ring (14). The two sides of the installation ring (14) are threaded with bolts (15).
2. The composite detachable structure casting roll according to claim 1, characterized in that: Two sets of sliders (2) are respectively provided on the upper and lower sides inside the roll sleeve (1). The roll sleeve (1) is limited to sliding with the roll mandrel (4) through the sliders (2).
3. The composite detachable structure casting roll according to claim 1, characterized in that: The worm (8) is provided in two sets, and the two sets of worm (8) are symmetrically arranged with respect to the central axis of the end face of the roll mandrel (4).
4. The composite detachable structure casting roll according to claim 1, characterized in that: The threads on both sides of the threaded rod (11) are opposite, and the limiting block (12) is square.
5. A composite detachable structure casting roll according to claim 1, characterized in that: The limiting block (12) is slidably connected to the roll mandrel (4), and the limiting block (12) is movably engaged with the limiting groove (3) opened on the surface of the slider (2).
6. The composite detachable structure casting roll according to claim 1, characterized in that: The inner diameter of the mounting ring (14) matches the outer diameter of the limiting roller shaft (6), and the mounting ring (14) is threadedly connected to the roll core shaft (4) by bolts (15).