A high-speed rotating connecting shaft component of a twenty-high rolling mill
By designing a combination of fixed shaft sleeve, synchronous shaft sleeve, guide ring and filter assembly in a twenty-roll rolling mill, the coupling shaft pollution and wear problems are solved, and the circulation filtration and sealing of lubricating oil is realized, ensuring rolling accuracy and equipment The normal operation reduces maintenance costs.
Patent Information
- Application Number
- CN202411219777.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2044-09-02
AI Technical Summary
The coupling shaft of the twenty-roll mill is easily contaminated during continuous work, resulting in a decrease in lubrication effect, which in turn aggravation, and aggravation of wear and maintenance, which affects the rolling accuracy and normal operation of the equipment.
A high-speed rotary coupling shaft component including a fixed shaft sleeve, a synchronous shaft sleeve, a guide ring, a filter assembly and a sealing connection ring is designed. By combining the filter assembly and the sealing connection ring, the circulating filtering and sealing of lubricating oil is realized to prevent Contaminate and reduce maintenance costs through simple disassembly and operation.
Effectively prevent dirt accumulation, keep the coupling shaft clean, extend the service life of the equipment, reduce maintenance costs, and ensure high precision of the rolling process and continuous and efficient operation of the equipment.
Smart Images
Figure CN118699080B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of twenty-high rolling mills, and in particular to a high-speed rotating connecting shaft component of a twenty-high rolling mill. Background Art
[0002] As a key equipment for rolling metal materials, the twenty-high rolling mill is widely used in many industrial fields, including machinery manufacturing, automobile manufacturing, petrochemical industry, and metallurgy. Its high-precision rolling requirements require the coupling shaft to maintain extremely small deviation and vibration during power transmission. However, with the continuous operation of the equipment, the coupling shaft faces multiple challenges.
[0003] First, due to material fatigue, normal wear or slight errors during installation, the performance of the coupling shaft will gradually decline, and its original high-precision characteristics will be difficult to maintain, which will directly affect the quality and precision of the rolled products; secondly, during the continuous rolling process, the coupling shaft needs to withstand continuous power transmission and high-intensity impact loads. This continuous working state will not only cause the temperature of the coupling shaft to rise, but also further aggravate its wear, and may even cause more serious failures such as breakage; in order to ensure the normal operation of the coupling shaft, lubrication and sealing are essential. However, in a continuous working environment, the lubrication system is prone to contamination, which will lead to a decrease in local lubrication effect, thereby aggravating the wear of the coupling shaft. To make it more complicated, due to the complex structure of the twenty-high mill, the cleaning and maintenance of its coupling shaft unit becomes particularly difficult. Usually, in order to carry out necessary maintenance, it is necessary to disassemble and open the coupling unit, which is a cumbersome and time-consuming process, which not only increases maintenance costs, but also may affect the normal operation of the production line.
[0004] For this purpose, a high-speed rotating connecting shaft component of a twenty-high rolling mill is proposed. Summary of the invention
[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a high-speed rotating connecting shaft component of a twenty-high rolling mill, which can effectively solve the problem in the prior art that the lubrication system of the connecting unit of the twenty-high rolling mill is easily contaminated, resulting in a decrease in the local lubrication effect and an inability to protect the connecting shaft well.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:
[0007] The present invention provides a high-speed rotating connecting shaft component of a twenty-high rolling mill, comprising:
[0008] A fixed sleeve, wherein the fixed sleeve is provided in two groups and is respectively connected to the driving shaft and the roller shaft;
[0009] A synchronous sleeve, the synchronous sleeve comprising a sleeve body for connecting two groups of fixed sleeves, a sealing connection ring arranged on the sleeve body for resisting the fixed sleeves, and a filter assembly arranged in the middle of the sleeve body and penetrating the sleeve body, a liquid guide cylinder connected to the liquid discharge end of the filter assembly is arranged inside the sleeve body, and a liquid extraction tube connected to the liquid inlet end of the filter assembly and the sealing connection ring is also arranged inside the sleeve body;
[0010] The guide ring is fixed on the outer side of the shaft sleeve body through a bracket, and a reciprocating guide groove for guiding the reciprocating drawing of the filter assembly is provided on the guide ring.
[0011] Furthermore, a metal diaphragm is provided between the sleeve body and the fixed sleeve, and a gap exists between the sleeve body and the fixed sleeve after the metal diaphragm is connected, and a sealing connection ring presses against the sleeve body and the fixed sleeve to seal the gap.
[0012] Furthermore, the sealing connection ring is in a circular ring shape, and the cross section of the sealing connection ring is triangular. A cavity and a liquid extraction hole connected to the cavity are provided inside the sealing connection ring.
[0013] Furthermore, a truncated cone-shaped groove is coaxially provided on the liquid guiding tube, and the aperture of the groove in the liquid guiding tube close to the filter assembly is smaller than the aperture close to the sealing connection ring. When the liquid guiding tube follows the centrifugal rotation of the sleeve body, the liquid is guided to the side close to the sealing connection ring to lubricate the parts. The liquid guiding tube is provided with a plurality of drainage holes extending toward the truncated cone-shaped groove.
[0014] Furthermore, the filter assembly includes two groups of filter sleeves arranged on the shaft sleeve body and a liquid storage part for connecting the two groups of filter sleeves. The filter sleeve is provided with a filtrate cavity connected to the drainage hole, and a filter screen is provided on the inner wall of the filter sleeve. The filter screen is used to store the liquid in the filtrate cavity after filtering. The filter assembly also includes a piston disk located in the filter sleeve, and a piston rod is provided on the piston disk.
[0015] Furthermore, a rotating rod is provided at the top of the piston rod, and the rotating rod extends into the reciprocating guide groove on the guide ring. When the piston rod rotates in the axial direction following the sleeve body, the rotating rod on the piston rod slides along the reciprocating guide groove, thereby driving the piston rod and the piston disc to move back and forth.
[0016] Furthermore, the piston disc is provided with a plurality of groups of through holes distributed in a circular array, and a plurality of groups of one-way liquid discharge parts slidably connected to the piston disc. When the piston disc descends and squeezes, the one-way liquid discharge part rises and opens the through holes. When the piston disc rises, the one-way liquid discharge part closes and drives the liquid upward, and enters the filtrate chamber after being filtered through the filter net. A limiting ring is provided at the bottom of the piston disc to prevent the one-way liquid discharge part from detaching from the piston disc.
[0017] Furthermore, it also includes a liquid guide plate, which is arranged in the shaft sleeve body and is attached to one end of the liquid guide tube, and the outer peripheral surface of the liquid guide plate is provided with a plurality of groups of liquid guide grooves distributed in a circular array, and the opening size of the liquid guide groove close to the liquid guide tube is larger than the opening size close to the sealing connection ring.
[0018] Furthermore, a connecting toothed disc is movably mounted on the fixed shaft sleeve, and a plurality of groups of limiting sliding blocks slidably connected to the roller shaft are provided on the connecting toothed disc. Beneficial Effects
[0019] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:
[0020] 1. By removing the synchronous sleeve and the cover of the sealing filter sleeve and pulling out the piston rod, the dirt accumulated inside the connecting shaft component can be discharged and cleaned. The operation is simple and convenient, with low professional level and reduced maintenance cost.
[0021] Second, the piston rod and the guide ring cooperate to repeatedly pull the piston disc, and cooperate with the one-way drainage parts and the filter net to filter and separate the dirt inside the connecting shaft component, which once again ensures the cleanliness of the inside of the connecting shaft component and effectively prevents the aggravation of wear caused by dirt accumulation;
[0022] 3. The fixed sleeve is fixed to the drive shaft and the roller shaft, and the sealing connecting ring is sleeved in the sleeve body and connected to the fixed sleeves on both sides. It is easy to install and has good sealing performance, so that the interior of the application is not easily polluted by the outside world, so that the connecting shaft component can continue to work efficiently and maintain high precision in the rolling process. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0025] Figure 2 It is a schematic diagram of the structure explosion of the present invention;
[0026] Figure 3 It is a partial cross-sectional view of the synchronous sleeve of the present invention;
[0027] Figure 4 A partial cross-sectional view of the filter assembly of the present invention;
[0028] Figure 5 A partial cross-sectional view of the piston disc of the present invention;
[0029] Figure 6 It is a structural schematic diagram of the liquid guide plate of the present invention;
[0030] Figure 7 A partial cross-sectional view of a guide ring of the present invention;
[0031] Figure 8 It is a schematic diagram of the explosion structure of the fixed shaft sleeve of the present invention.
[0032] 1. Fixed sleeve; 11. Connecting toothed disc; 111. Limiting slider; 2. Synchronous sleeve; 21. Sleeve body; 22. Sealing connecting ring; 25. Liquid guide cylinder; 251. Liquid discharge hole; 26. Liquid suction tube; 27. Liquid guide disc; 271. Liquid guide groove; 28. Filter assembly; 281. Liquid storage part; 282. Filter sleeve; 2821. Filter net; 2822. Filtrate chamber; 283. Piston rod; 284. Piston disc; 2841. One-way liquid discharge part; 2842. Limiting ring; 3. Guide ring; 31. Reciprocating guide groove. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] The present invention will be further described below in conjunction with the embodiments.
[0035] Example:
[0036] See attached Figure 1-8 , a high-speed rotating connecting shaft component of a twenty-high rolling mill, comprising:
[0037] The fixed sleeve 1 is provided with two groups and connected with the driving shaft and the roller shaft respectively. A connecting toothed disc 11 is movably mounted on the fixed sleeve 1, and a plurality of limit sliders 111 are provided on the connecting toothed disc 11 to be slidably connected with the roller shaft. The connecting toothed disc 11 is provided to increase the stability of the shaft during rotation, and to prevent the roller shaft and the fixed sleeve 1 from relative displacement after the local wear of the connecting key, thereby improving the accuracy.
[0038] The synchronous sleeve 2 includes a sleeve body 21 for connecting two groups of fixed sleeves 1 and a sealing connecting ring 22 arranged on the sleeve body 21 for resisting the fixed sleeve 1. A metal diaphragm is provided between the sleeve body 21 and the fixed sleeve 1. A gap exists between the sleeve body 21 and the fixed sleeve 1 after the metal diaphragm is connected. The elastic deformation of the metal diaphragm can compensate for the relative displacement of the two connected shafts, thereby improving the overall strength and bearing capacity. The sealing connecting ring 22 resists the gap between the sleeve body 21 and the fixed sleeve 1 to seal the gap. The sealing connecting ring 22 seals the sleeve body 21 and the fixed sleeve 1 to prevent leakage during lubrication from contaminating the machinery or materials.
[0039] Specifically, the sealing connection ring 22 is in a circular ring shape, and the cross-section of the sealing connection ring 22 is triangular. A cavity and a liquid extraction hole connected to the cavity are provided inside the sealing connection ring 22. The side with a larger aperture of the sealing connection ring 22 faces the fixed sleeve 1. When rotating at high speed, the liquid will adhere to the inner wall of the sealing connection ring 22 due to centrifugal force, and more liquid will accumulate on the end of the sealing connection ring 22 that contacts the fixed sleeve 1, which is convenient for subsequent extraction and filtration.
[0040] The filter assembly 28 is arranged in the middle of the sleeve body 21 and penetrates the sleeve body 21. The filter assembly 28 cooperates with the rotation of the sleeve body 21 to circulate and filter the internal lubricating oil. The sleeve body 21 is provided with a liquid guide cylinder 25 connected to the liquid discharge end of the filter assembly 28. The liquid guide cylinder 25 is coaxially provided with a truncated cone-shaped groove, and the aperture of the groove in the liquid guide cylinder 25 close to the filter assembly 28 is smaller than the aperture close to the sealing connection ring 22. When the liquid guide cylinder 25 follows the centrifugal rotation of the sleeve body 21, the liquid is guided to A liquid discharge hole 251 extending toward the truncated cone-shaped groove is disposed on the liquid discharge tube 25 to discharge the lubricating oil, and the lubricating oil is introduced into the liquid discharge tube 25, and the lubricating oil is transferred to the fixed shaft sleeve 1 by the centrifugal force. A liquid extraction pipe 26 connecting the liquid inlet end of the filter assembly 28 and the sealing connection ring 22 is also disposed in the shaft sleeve body 21, and the lubricating oil at the connection between the fixed shaft sleeve 1 and the sealing connection ring 22 is extracted and filtered through the liquid extraction pipe 26.
[0041] Among them, the filter assembly 28 includes two groups of filter sleeves 282 arranged on the shaft sleeve body 21, and the two groups of filter sleeves 282 are symmetrically distributed on the shaft sleeve body 21. It also includes a liquid storage part 281 for connecting the two groups of filter sleeves 282. The liquid storage part 281 is used to temporarily store the extracted lubricating oil. The filter sleeve 282 is provided with a filtrate cavity 2822 connected to the drainage hole 251, and a filter net 2821 is provided on the inner wall of the filter sleeve 282. The filter net 2821 is used to filter the liquid and store it in the filtrate cavity 2822. The filter assembly 28 also includes a piston disk 284 located in the filter sleeve 282, and a piston rod 283 is provided on the piston disk 284. The piston rod 283 pulls the piston disk 284 to continuously extract the lubricating oil from the sealing connection ring 22 into the filtrate cavity 2822 for filtration and transport it to the liquid guide cylinder 25 to form a circulation.
[0042] In addition, a rotating rod is provided at the top of the piston rod 283, and the rotating rod extends into the reciprocating guide groove 31 on the guide ring 3. When the piston rod 283 rotates in the axial direction following the sleeve body 21, the rotating rod on the piston rod 283 slides along the reciprocating guide groove 31, thereby driving the piston rod 283 and the piston disc 284 to move back and forth.
[0043] In addition, the piston disc 284 is provided with a plurality of through holes distributed in a circular array, and a plurality of one-way liquid discharge parts 2841 slidably connected to the piston disc 284. When the piston disc 284 is lowered and squeezed, since the liquid storage part 281 is provided with lubricating oil, after being squeezed by the piston disc 284, the one-way liquid discharge part 2841 is subjected to pressure rise and opens the through hole, and part of the lubricating oil overflows into the top of the piston disc 284. When the piston disc 284 rises, the one-way liquid discharge part 2841 is pressurized and closed, and the piston disc 284 pushes the lubricating oil to the top and squeezes the lubricating oil. At this time, the lubricating oil is filtered through the filter net 2821 and enters the filtrate chamber 2822, and then flows into the truncated cone-shaped groove in the liquid guide tube 25 again through the liquid discharge hole 251. A limiting ring 2842 is provided at the bottom of the piston disc 284 to prevent the one-way liquid discharge part 2841 from separating from the piston disc 284.
[0044] The guide ring 3 is fixed to the outer side of the sleeve body 21 through a bracket, and a reciprocating guide groove 31 is provided on the guide ring 3 to guide the filter assembly 28 to be pulled back and forth. When the synchronous sleeve 2 rotates, the piston rod 283 arranged on the filter assembly 28 reciprocates and pulls the piston disk 284 under the guidance of the reciprocating guide groove 31, thereby continuously extracting the used lubricating oil from the connection between the sealing connecting ring 22 and the fixed sleeve 1, and then discharging it into the liquid guide cylinder 25 again after filtering with the filter net 2821, and continuously transferring the lubricating oil to the components in the fixed sleeve 1 and the synchronous sleeve 2 for lubrication under the action of centrifugal force.
[0045] It is worth mentioning that it also includes a liquid guide plate 27, which is arranged in the sleeve body 21 and is attached to one end of the liquid guide tube 25. The outer diameter of the liquid guide plate 27 is smaller than the diameter of the small mouth end of the sealing connection ring 22 to prevent the sprayed lubricating oil from mixing with the used lubricating oil. The outer peripheral surface of the liquid guide plate 27 is provided with a plurality of groups of liquid guide grooves 271 distributed in a circular array. The opening size of the liquid guide groove 271 close to the liquid guide tube 25 is larger than the opening size close to the sealing connection ring 22. Through the special structure of the liquid guide groove 271, the lubricating oil is quickly ejected into the fixed sleeve 1 to avoid contact with the used lubricating oil again.
[0046] Working principle: fix the fixed sleeve 1 on the drive shaft and the roller shaft, then put the sealing connection ring 22 into the sleeve body 21 and connect it with the fixed sleeves 1 on both sides, seal the sleeve body 21 and the fixed sleeve 1 through the sealing connection ring 22, and then fix the guide ring 3. When the synchronous sleeve 2 rotates with the drive shaft, the lubricating oil inside the synchronous sleeve 2 is thrown to the liquid guide plate 27 under the action of the centrifugal force generated by the rotation through the special setting of the liquid guide tube 25, and the lubricating oil is injected into the fixed sleeve 1 with the help of the liquid guide groove 271. Then the lubricating oil will accumulate and move to the connection between the sealing connection ring 22 and the fixed sleeve 1 under the action of centrifugal force. At the same time, the piston rod 283 cooperates with the guide ring 3 to repeatedly pull and pull the piston plate 284. When descending and squeezing, the one-way drainage member 2841 is subjected to rising pressure and opens the through hole, causing part of the lubricating oil to overflow into the top of the piston disc 284. When the piston disc 284 rises, the one-way drainage member 2841 is closed under pressure, and the piston disc 284 drives the lubricating oil to the top and squeezes the lubricating oil at the same time. At this time, the lubricating oil enters the filtrate chamber 2822 after being filtered through the filter screen 2821. When the piston disc 284 rises, the lubricating oil at the connection between the sealing connecting ring 22 and the fixed sleeve 1 is extracted by the suction pipe 26, and finally flows into the truncated cone-shaped groove in the liquid guide tube 25 again through the drainage hole 251 to complete the cycle. When cleaning is needed, the synchronous sleeve 2 and the cover of the sealing filter sleeve 282 are removed, and the piston rod 283 is pulled out. The operation is simple and convenient, with low professional level and reduced maintenance cost.
[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.
Claims
1. A high-speed rotating connecting shaft component of a twenty-high rolling mill, characterized in that: include: A fixed shaft sleeve (1), wherein the fixed shaft sleeve (1) is provided with two sets and is respectively connected to the drive shaft and the roller shaft; A synchronous shaft sleeve (2), the synchronous shaft sleeve (2) comprising a shaft sleeve body (21) for connecting two groups of fixed shaft sleeves (1), a sealing connection ring (22) arranged on the shaft sleeve body (21) for abutting against the fixed shaft sleeves (1), and a filter assembly (28) arranged in the middle of the shaft sleeve body (21) and penetrating the shaft sleeve body (21), wherein a liquid guide cylinder (25) in communication with a liquid discharge end of the filter assembly (28) is arranged inside the shaft sleeve body (21), a truncated cone-shaped groove is coaxially arranged on the shaft guide cylinder (25), and the aperture of the groove in the shaft guide cylinder (25) on the side close to the filter assembly (28) is smaller than the aperture on the side close to the sealing connection ring (22), and a filter assembly (28) is arranged in the middle of the shaft sleeve body (21) and penetrates the shaft sleeve body (21). 5) When the shaft sleeve body (21) rotates centrifugally, the liquid is directed to a side close to the sealing connection ring (22) to lubricate the parts. The liquid guide cylinder (25) is provided with a plurality of groups of liquid discharge holes (251) extending toward the truncated cone-shaped groove. The shaft sleeve body (21) is also provided with a liquid suction pipe (26) connecting the liquid inlet end of the filter assembly (28) and the sealing connection ring (22). The filter assembly (28) includes two groups of filter sleeves (282) arranged on the shaft sleeve body (21) and a liquid storage member (281) for connecting the two groups of filter sleeves (282). The filter sleeve (282) is provided with a filtrate cavity (282) connected to the liquid discharge hole (251). 2), and a filter screen (2821) is provided on the inner wall of the filter sleeve (282), and the filter screen (2821) is used to filter the liquid and store it in the filtrate chamber (2822), the filter assembly (28) further includes a piston disc (284) located in the filter sleeve (282), and a piston rod (283) is provided on the piston disc (284), and a rotating rod is provided at the top of the piston rod (283), and the rotating rod extends into the reciprocating guide groove (31) on the guide ring (3), when the piston rod (283) rotates along the axis direction with the shaft sleeve body (21), the rotating rod on the piston rod (283) slides along the reciprocating guide groove (31), thereby driving the piston rod (2 83) and the piston disc (284) reciprocate, the piston disc (284) is provided with a plurality of groups of through holes distributed in an annular array, and a plurality of groups of one-way liquid discharge members (2841) slidably connected to the piston disc (284), when the piston disc (284) descends and squeezes, the one-way liquid discharge member (2841) rises and opens the through holes, when the piston disc (284) rises, the one-way liquid discharge member (2841) closes and drives the liquid upward, and after being filtered by the filter screen (2821), the liquid enters the filtrate chamber (2822), and a limiting ring (2842) is provided at the bottom of the piston disc (284) to prevent the one-way liquid discharge member (2841) from being separated from the piston disc (284); A guide ring (3) is fixed to the outside of the shaft sleeve body (21) via a bracket, and a reciprocating guide groove (31) is provided on the guide ring (3) for guiding the filter assembly (28) to be reciprocated.
2. A twenty-high rolling mill high-speed rotating connecting shaft component according to claim 1, characterized in that: A metal diaphragm is provided between the shaft sleeve body (21) and the fixed shaft sleeve (1); a gap exists between the shaft sleeve body (21) and the fixed shaft sleeve (1) after the metal diaphragm is connected; and a sealing connection ring (22) presses against the shaft sleeve body (21) and the fixed shaft sleeve (1) to seal the gap.
3. A twenty-high rolling mill high-speed rotating connecting shaft component according to claim 2, characterized in that: The sealing connection ring (22) is in the shape of a circular ring, and the cross section of the sealing connection ring (22) is triangular. A cavity and a liquid extraction hole communicating with the cavity are provided inside the sealing connection ring (22).
4. A twenty-high rolling mill high-speed rotating connecting shaft component according to claim 1, characterized in that: It also comprises a liquid guide plate (27), the liquid guide plate (27) being arranged in the shaft sleeve body (21) and abutting against one end of the liquid guide tube (25), and the outer peripheral surface of the liquid guide plate (27) is provided with a plurality of groups of liquid guide grooves (271) distributed in a ring array, the opening size of the liquid guide groove (271) on the side close to the liquid guide tube (25) being larger than the opening size on the side close to the sealing connection ring (22).
5. A twenty-high rolling mill high-speed rotating connecting shaft component according to claim 1, characterized in that: A connecting toothed disc (11) is movably mounted on the fixed shaft sleeve (1), and the connecting toothed disc (11) is provided with a plurality of groups of limiting sliding blocks (111) slidably connected to the roller shaft.