Flat steel belt rolling mill roller

Abstract

The invention discloses a flat steel belt rolling mill roller. The flat steel belt rolling mill roller comprises a main roller shaft, a connector assembly and a shaft head assembly. A runner and a main core cavity are formed in the main roller shaft, cooling liquid circularly flows through the runner, and it is ensured that the roller body is evenly cooled. The connector assembly and the shaft head assembly are rapidly disassembled and maintained through an innovative detachable connecting structure, the self-sealing function is achieved in the disassembling process, and leakage of cooling liquid is prevented. The self-locking type magnetic ring connector further comprises a self-locking structure and a magnetic ring unlocking structure, the connector assembly and the shaft head assembly are automatically locked and unlocked through the magnetic force effect between the magnetic ring body and the magnetic head, and the operation convenience and safety are improved; meanwhile, the cooling effect is optimized through the design of the cooling liquid flow channel, and it is guaranteed that temperature control of the roller is stable in the long-time operation process. The flat steel strip rolling mill roller is simple in structure and has efficient cooling performance, an automatic sealing function and a convenient disassembly and maintenance mechanism, and the working efficiency, reliability and safety of the roller are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of rolling mill rollers, in particular to a flat steel strip rolling mill roller. Background Art

[0002] With the continuous development of industrialization, rolling technology has been widely used in metal processing, steel production and other industries. Especially in the production of steel strips, the performance of rolling mill rolls directly affects the production efficiency and quality of steel strips. In the process of steel strip rolling, the design of the rolls, the cooling effect and the difficulty of maintenance have always been the focus of technical improvement.

[0003] Traditional steel strip mill rolls usually adopt a fixed structure design, that is, the main roll shaft and the roll body are fixed together through mechanical connection. Although this structure can meet the basic rolling requirements to a certain extent, it is prone to the following problems during long-term use: Difficult to disassemble: Due to the fixed structure design, traditional rollers require the entire roller body to be disassembled and replaced. This process is cumbersome and requires a lot of manual intervention. Especially when the roller fails, the time and labor costs of disassembly and replacement are very high.

[0004] Coolant leakage: Traditionally designed cooling systems are mostly liquid cooling pipes. Although they can effectively remove heat, the cooling pipes are usually fixedly installed and are prone to coolant leakage during disassembly and maintenance, causing unstable system operation and even safety hazards.

[0005] Poor sealing: In the existing design, the sealing of the coolant flow channel and the connecting parts is poor. Especially during the disassembly and installation process, the coolant flow channel is easily contaminated or leaks, thus affecting the cooling effect.

[0006] In order to overcome the above problems, a variety of improvement schemes have been proposed in the prior art, including the improvement of bearings, the optimization design of cooling pipelines and the improvement of sealing structures. For example, some patents propose the use of detachable connectors to simplify the disassembly process of the rollers, or improve the design of the coolant flow channel to enhance the cooling effect. However, these improvements still have some defects: although some new designs have strengthened the cooling system, due to the lack of effective temperature control management, the cooling effect will gradually weaken during the long-term operation of the rolling mill, resulting in fluctuations in the roller body temperature and affecting the stability of the rolling process. Although the existing sealing structures can reduce coolant leakage to a certain extent, these structures often cannot automatically complete the sealing during disassembly and still require manual operation. Such designs often rely on high operating technology and long downtime.

[0007] In view of this, research and improvement are carried out on the existing problems, and a flat steel strip rolling mill roller is provided to solve the current problems. The purpose is to solve the problems and improve the practical value through this technology. Summary of the invention

[0008] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0009] In order to solve the above technical problems, the technical solutions adopted in the present invention are as follows: A flat steel strip rolling mill roller, comprising: a main roller shaft, a joint assembly and a shaft head assembly, wherein the joint assembly is fixedly mounted at both ends of the main roller shaft, an inner flow channel and a main core cavity are arranged inside the main roller shaft, and a plurality of inner flow channels are evenly distributed on the outer periphery of the main core cavity in a circumferential direction; The joint assembly includes a joint seat, a magnetic ring body, a self-sealing block and a plurality of locking pin heads. A joint groove is provided on the inner side of the joint seat, and a flow channel connected with the joint groove, the inner flow channel and the end of the main core cavity is provided on the inner side of the joint groove. A plurality of key slides are fixedly installed on the inner side of the joint groove. The self-sealing block is slidably sleeved on the inner side of the joint groove and its surface engages and slides with the surface of the key slide. The plurality of locking pin heads are radially arranged, and one end of the locking pin head is fixedly connected with a magnetic head and a self-locking spring. The magnetic ring body is slidably sleeved on the outer side of the joint seat, and a self-sealing spring facing the self-sealing block is provided on the inner side of the joint groove.

[0010] Furthermore, the shaft head assembly includes a main shaft end and an inserted shaft head, the inner side of the main shaft end is provided with a self-sealing sleeve located at the outer periphery of the inserted shaft head, the outer side of the inserted shaft head is slidingly sleeved with a retraction cavity and an ejection spring located on the inner side of the retraction cavity, the inner side of the inserted shaft head is provided with a main flow cavity for connecting to a rolling mill liquid cooling pump group, a plurality of diversion holes are opened on the surface of the inserted shaft head, and the inner side of the self-sealing sleeve is in sliding contact with the outer periphery of the inserted shaft head to seal the end of the diversion hole.

[0011] Furthermore, when the joint assembly and the shaft head assembly are engaged, the main flow cavity, the diverter hole and the engagement groove, and the interior of the joint assembly are connected to the inner flow channel and the main core cavity; when the joint assembly and the shaft head assembly are disengaged, the end of the diverter hole is sealed by ejecting the self-sealing sleeve through the ejection spring, and the interior of the joint assembly is sealed by pushing the self-sealing block through the self-sealing spring.

[0012] Furthermore, the key slide is evenly distributed on the inner wall surface of the coupling groove in the circumferential direction, and the surface of the plug-in shaft head is provided with a plurality of key grooves arranged corresponding to the key slide. The diversion hole is located between adjacent key grooves and is connected to the internal flow channel of the coupling seat one by one.

[0013] Furthermore, a locking ring groove is provided on the surface of the plug-in shaft head, and the end of the locking pin head is beveled for inserting into the locking ring groove to achieve the engagement of the joint assembly and the shaft head assembly, and the self-locking spring is radially arranged for ejecting the locking pin head.

[0014] Furthermore, a positioning assembly for a self-sealing sleeve is provided on the surface of the shaft inserting head, which is used to limit the position of the self-sealing sleeve in the engaged state and the non-engaged state of the joint assembly and the shaft head assembly.

[0015] Furthermore, the sum of the natural length of the self-sealing spring and the length of the self-sealing block is equal to the depth of the engagement groove.

[0016] Furthermore, a guard ring is fixedly mounted on the surface of the engagement seat to guide the accurate engagement of the joint assembly and the shaft head assembly.

[0017] Furthermore, the magnetic ring body and the magnetic head are permanent magnet structures, and the magnetic pole direction of the magnetic ring body is radially opposite to the magnetic pole arrangement direction of the magnetic head.

[0018] The beneficial effects achieved by the present invention are: 1. In the present invention, a shaft structure that is easy to disassemble and assemble is designed, and a quick disassembly connection method is adopted, so that the connection between the roller shaft and other components is easier. Through the detachable structure, the user can easily complete the disassembly and replacement of the roller without special tools, which greatly saves maintenance and repair time and improves the use efficiency and operability of the roller.

[0019] 2. In the present invention, during the disassembly or installation process, the flow channel is ensured to be automatically sealed in the disassembly state to prevent coolant leakage or air from entering the system, thereby ensuring the normal operation of the cooling system. Through the synergistic effect of components such as self-sealing blocks and self-sealing springs, efficient sealing is achieved when the components are disengaged or engaged, avoiding the sealing failure problem that may exist in traditional designs and improving the stability and safety of the system.

[0020] 3. In the present invention, the self-locking structure and the magnetic ring unlocking structure are integrated. Through the magnetic force between the magnetic ring body and the magnetic head, the joint assembly and the shaft head assembly are automatically locked during operation, ensuring the tightness between the shaft and the roller body. In addition, the magnetic ring unlocking structure can unlock the joint assembly and the shaft head assembly through external force when necessary, which is convenient for disassembly and maintenance, and improves the maintainability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a shaft head assembly and a joint assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the exploded structure of a shaft head assembly according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the exploded structure of a joint assembly according to an embodiment of the present invention; Figure 5A schematic diagram of the cross-sectional structure of a joint assembly and a shaft head assembly according to an embodiment of the present invention; Figure 6 The figure is a schematic diagram of the cross-sectional structure of the main shaft end according to an embodiment of the present invention.

[0022] Reference numerals: 100, main roller shaft; 110, inner flow channel; 120, main core cavity; 200, connector assembly; 210, joint seat; 220, magnetic ring body; 230, self-sealing block; 240, locking pin head; 211, guard ring; 212, joint groove; 213, key slide; 241, magnetic head; 242, self-locking spring; 250, self-sealing spring; 300, shaft head assembly; 310, main shaft end; 320, plug-in shaft head; 311, self-sealing sleeve; 312, retraction cavity; 313, ejection spring; 321, keyway; 322, diverter hole; 323, main flow cavity; 324, lock ring groove. DETAILED DESCRIPTION

[0023] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0024] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0025] The following is combined with Figures 1 to 6 A tempered steel strip mill roll is described in some embodiments of the present invention.

[0026] The flat steel strip rolling mill roll of the present invention comprises a main roll shaft 100, a joint assembly 200 and a shaft head assembly 300. Next, the specific implementation of the present invention will be described in conjunction with the accompanying drawings.

[0027] 1. Main roller 100 The main roller 100 is the core component of the present invention, and its exterior is connected to the joint assembly 200 and the shaft head assembly 300 through a quick disassembly structure. The main roller 100 is provided with an inner flow channel 110 and a main core cavity 120, and the inner flow channel 110 is evenly distributed on the outer periphery of the main core cavity 120 in the circumferential direction.

[0028] 2. Joint assembly 200 The joint assembly 200 is connected to both ends of the main roller shaft 100 through the joint seat 210. The joint assembly 200 includes a joint seat 210, a magnetic ring body 220, a self-sealing block 230 and a plurality of locking pin heads 240. A joint groove 212 is provided inside the joint seat 210, and a plurality of key slides 213 are fixedly installed inside the joint groove 212 for mating with the shaft head assembly 300.

[0029] The joint assembly 200 is connected to the inner flow channel 110 and the main core cavity 120 through the flow channel to ensure the flow of the coolant. The magnetic ring body 220 is combined with the magnetic head 241 to form an automatic locking structure, which ensures the reliable connection between the joint assembly 200 and the shaft head assembly 300 through magnetic adsorption. The self-sealing block 230 and the self-sealing spring 250 automatically seal the flow channel during disassembly or installation to prevent coolant leakage.

[0030] 3. Shaft head assembly 300 The shaft head assembly 300 includes a main shaft end 310 and an insert shaft head 320. The inner side of the main shaft end 310 is provided with a retraction cavity 312 and an ejection spring 313 that match the outer periphery of the insert shaft head 320, ensuring that during the disassembly process, the retraction cavity 312 and the ejection spring 313 can cooperate in time to push the joint assembly 200 to unlock.

[0031] The shaft plug head 320 is connected to the joint seat 210 in the joint assembly 200 through a sliding sleeve connection. A main flow cavity 323 is provided on the inner side of the shaft plug head 320 for connecting the liquid cooling pump group of the rolling mill. A plurality of diversion holes 322 are provided on the surface of the shaft plug head 320 for connecting the flow channel 110 in the main roller shaft 100. When the shaft head assembly 300 is engaged with the joint assembly 200, the ejection spring 313 pushes the self-sealing sleeve 311 to slide outward, opens the diversion hole 322, and allows the coolant to flow into the main flow cavity 323, and then communicates with the inside of the joint assembly 200.

[0032] The flat steel strip rolling mill roller in this embodiment includes: a main roller shaft 100, a joint assembly 200 and a shaft head assembly 300, wherein the joint assembly 200 is fixedly installed at both ends of the main roller shaft 100, and an inner flow channel 110 and a main core cavity 120 are provided inside the main roller shaft 100, and a plurality of inner flow channels 110 are evenly distributed on the outer periphery of the main core cavity 120 in a circumferential direction; the inner flow channel 110 is used to transport the coolant to the roller surface to ensure the temperature of the roller body is balanced; The joint assembly 200 includes a joint seat 210, a magnetic ring body 220, a self-sealing block 230 and a plurality of locking pin heads 240. A joint groove 212 is provided on the inner side of the joint seat 210, and a flow channel connected to the joint groove 212, the inner flow channel 110 and the end of the main core cavity 120 is provided on the inner side of the joint groove 212. A plurality of key slides 213 are fixedly installed on the inner side of the joint groove 212. The self-sealing block 230 is slidably sleeved on the inner side of the joint groove 212 and its surface engages and slides with the surface of the key slide 213. A plurality of locking pin heads 240 are arranged radially, and one end of the locking pin head 240 is fixedly connected to a magnetic head 241 and a self-locking spring 242. The magnetic ring body 220 is slidably sleeved on the outer side of the joint seat 210, and a self-sealing spring 250 opposite to the self-sealing block 230 is provided on the inner side of the joint groove 212.

[0033] As a preferred embodiment, the shaft head assembly 300 in this embodiment includes a main shaft end 310 and an inserted shaft head 320, the inner side of the main shaft end 310 is provided with a self-sealing sleeve 311 located at the outer periphery of the inserted shaft head 320, the outer side of the inserted shaft head 320 is slidingly sleeved with a retraction cavity 312 and an ejection spring 313 located on the inner side of the retraction cavity 312, the inner side of the inserted shaft head 320 is provided with a main flow cavity 323 for connecting to the rolling mill liquid cooling pump group, a plurality of diversion holes 322 are opened on the surface of the inserted shaft head 320, and the inner side of the self-sealing sleeve 311 is in sliding contact with the outer periphery of the inserted shaft head 320 to seal the end of the diversion hole 322.

[0034] When the joint assembly 200 and the shaft head assembly 300 are in a connected state, the connection with the inner flow channel 110 and the main core cavity 120 is achieved through the main flow cavity 323, the diverter hole 322 and the coupling groove 212, and the interior of the joint assembly 200; when the joint assembly 200 and the shaft head assembly 300 are disengaged, the end of the diverter hole 322 is sealed by pushing out the self-sealing sleeve 311 through the ejection spring 313, and the interior of the joint assembly 200 is sealed by pushing the self-sealing block 230 through the self-sealing spring 250.

[0035] As a preferred embodiment, the key slide 213 in this embodiment is evenly distributed on the inner wall surface of the coupling groove 212 in the circumferential direction, and the surface of the plug-in shaft head 320 is provided with a plurality of key grooves 321 arranged corresponding to the key slide 213, and the diversion hole 322 is located between adjacent key grooves 321 and is connected one-to-one with the internal flow channel of the coupling seat 210.

[0036] As a preferred embodiment, a locking ring groove 324 is provided on the surface of the plug-in shaft head 320 in this embodiment, and the end of the locking pin head 240 is beveled for inserting into the locking ring groove 324 to realize the connection between the joint assembly 200 and the shaft head assembly 300, and the self-locking spring 242 is radially arranged for ejecting the locking pin head 240.

[0037] As a preferred implementation, the surface of the shaft plug 320 in this embodiment is provided with a positioning assembly for the self-sealing sleeve 311 for limiting the position of the self-sealing sleeve 311 in the engaged state and the non-engaged state of the joint assembly 200 and the shaft head assembly 300.

[0038] As a preferred implementation manner, the sum of the natural length state of the self-sealing spring 250 and the length of the self-sealing block 230 in this embodiment is equal to the depth of the engagement groove 212 .

[0039] As a preferred implementation, a guard ring 211 is fixedly mounted on the surface of the engagement seat 210 in this embodiment, for guiding the accurate engagement of the joint assembly 200 and the shaft head assembly 300 .

[0040] As a preferred implementation, the magnetic ring body 220 and the magnetic head 241 in this embodiment are permanent magnet structures, and the magnetic pole direction of the magnetic ring body 220 is radially opposite to the magnetic pole arrangement direction of the magnetic head 241.

[0041] Structural coordination and operation steps During the installation process, the shaft head assembly 300 is first inserted into the joint assembly 200, and the shaft head 320 is inserted through the engagement groove 212 in the engagement seat 210 and meshed with the key slide 213 to ensure a firm connection. At this time, the inner flow channel 110 and the flow channel of the joint assembly 200 are connected through the diverter hole 322, and the coolant can smoothly enter the rolling mill roller.

[0042] During the disassembly process, the operator needs to push the self-sealing sleeve 311 back through the ejection spring 313 on the shaft head assembly 300, so that the end of the diverter hole 322 is blocked to prevent coolant leakage. At this time, the magnetic ring body 220 and the magnetic head 241 use magnetic force to make the locking pin head 240 retreat, thereby unlocking the joint assembly 200 and the shaft head assembly 300.

[0043] How it works During the operation of the rolling mill roll of the present invention, the coolant enters the flow channel in the joint assembly 200 through the flow channel 110 in the main roll shaft 100, and enters the main flow cavity 323 through the diversion hole 322. The coolant circulates through the entire system to ensure that the temperature of the rolling mill roll body is uniform under high-temperature working environment, avoiding local overheating and causing surface defects of the steel strip.

[0044] The connection and unlocking mechanism between the joint assembly 200 and the shaft head assembly 300 is automatically completed by the self-sealing block 230 and the ejection spring 313, and does not require manual intervention during normal operation, thereby reducing the difficulty of operation and improving the reliability of use.

[0045] Usage Process Installation stage: Before use, first install the joint assembly 200 to both ends of the main roller shaft 100, and ensure the firm connection through the locking pin head 240 and the key slide bar 213. Then insert the shaft head assembly 300, connect the shaft plug head 320 with the joint assembly 200, and realize the communication of the coolant through the diversion hole 322.

[0046] Working stage: When the rolling mill starts to work, the coolant flows into the joint assembly 200 and the shaft head assembly 300 through the inner flow channel 110 to ensure that the temperature of the roller body is uniform.

[0047] Disassembly stage: when disassembly is required, the self-sealing sleeve 311 is pushed back by the ejection spring 313 to block the diversion hole 322, and the joint assembly 200 is unlocked by the magnetic ring body 220, so that each component can be disassembled smoothly for easy maintenance.

[0048] Through the implementation mode of the present invention, the rapid disassembly and assembly, self-sealing function and automatic locking and unlocking structure of the rolling mill roller are successfully realized, which greatly improves the maintenance efficiency, safety of use and cooling effect of the rolling mill roller, and meets the requirements of high efficiency, convenience and safety of modern rolling mills.

[0049] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A flat steel strip rolling mill roll, characterized in that: include: A main roller shaft (100), a joint assembly (200) and a shaft head assembly (300), wherein the joint assembly (200) is fixedly mounted at both ends of the main roller shaft (100), an inner flow channel (110) and a main core cavity (120) are provided inside the main roller shaft (100), and a plurality of inner flow channels (110) are evenly distributed in a circumferential direction on the outer periphery of the main core cavity (120); The joint assembly (200) comprises a joint seat (210), a magnetic ring body (220), a self-sealing block (230) and a plurality of locking pin heads (240); a joint groove (212) is provided on the inner side of the joint seat (210); a flow channel communicating with the joint groove (212), the inner flow channel (110) and the end of the main core cavity (120) is provided on the inner side of the joint seat (210); a plurality of key slides (213) are fixedly installed on the inner side of the joint groove (212); and the self-sealing block (230) is provided on the inner side of the joint seat (210). The block (230) is slidably sleeved on the inner side of the engagement groove (212) and its surface is meshed and slidably engaged with the surface of the key slide bar (213); a plurality of locking pin heads (240) are radially arranged, and one end of the locking pin head (240) is fixedly connected to a magnetic head (241) and a self-locking spring (242); the magnetic ring body (220) is slidably sleeved on the outer side of the engagement seat (210); and a self-sealing spring (250) facing the self-sealing block (230) is provided on the inner side of the engagement groove (212).

2. A flat steel strip mill roller according to claim 1, characterized in that: The shaft head assembly (300) comprises a main shaft end (310) and a shaft plug head (320); the inner side of the main shaft end (310) is provided with a self-sealing sleeve (311) located at the outer periphery of the shaft plug head (320); the outer side of the shaft plug head (320) is slidably sleeved with a retraction cavity (312) and an ejection spring (313) located at the inner side of the retraction cavity (312); the inner side of the shaft plug head (320) is provided with a main flow cavity (323) for connecting to a rolling mill liquid cooling pump group; a plurality of diversion holes (322) are provided on the surface of the shaft plug head (320); and the inner side of the self-sealing sleeve (311) is slidably abutted against the outer periphery of the shaft plug head (320) for sealing the ends of the diversion holes (322).

3. A flat steel strip rolling mill roller according to claim 2, characterized in that: When the joint assembly (200) and the shaft head assembly (300) are in a state of engagement, the main flow cavity (323), the flow diversion hole (322) and the engagement groove (212) are used to connect the interior of the joint assembly (200) with the inner flow channel (110) and the main core cavity (120); when the joint assembly (200) and the shaft head assembly (300) are in a state of disengagement, the end of the flow diversion hole (322) is blocked by the ejection spring (313) ejecting the self-sealing sleeve (311), and the interior of the joint assembly (200) is blocked by the self-sealing spring (250) pushing the self-sealing block (230).

4. A flat steel strip rolling mill roller according to claim 2, characterized in that: The key slide bars (213) are evenly distributed on the inner wall surface of the engagement groove (212) in the circumferential direction, a plurality of key connection grooves (321) arranged corresponding to the key slide bars (213) are formed on the surface of the shaft inserting head (320), and the flow diversion holes (322) are located between adjacent key connection grooves (321) and are in one-to-one communication with the internal flow channels of the engagement seat (210).

5. A flat steel strip mill roller according to claim 2, characterized in that: A locking ring groove (324) is provided on the surface of the shaft inserting head (320); the end of the locking pin head (240) is beveled and is used to be inserted into the locking ring groove (324) to achieve the connection between the joint assembly (200) and the shaft head assembly (300); and the self-locking spring (242) is radially arranged and is used to eject the locking pin head (240).

6. A flat steel strip mill roller according to claim 2, characterized in that: A positioning assembly for the self-sealing sleeve (311) is provided on the surface of the shaft inserting head (320), which is used to define the position of the self-sealing sleeve (311) in the engaged state and the non-engaged state of the joint assembly (200) and the shaft head assembly (300).

7. A flat steel strip mill roller according to claim 1, characterized in that: The sum of the natural length of the self-sealing spring (250) and the length of the self-sealing block (230) is equal to the depth of the engagement groove (212).

8. A flat steel strip mill roller according to claim 1, characterized in that: A protective ring (211) is fixedly mounted on the surface of the engagement seat (210) and is used to guide the accurate engagement of the joint assembly (200) and the shaft head assembly (300).

9. A flat steel strip mill roller according to claim 1, characterized in that: The magnetic ring body (220) and the magnetic head (241) are permanent magnet structures, and the magnetic pole direction of the magnetic ring body (220) is radially opposite to the magnetic pole arrangement direction of the magnetic head (241).

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