Outer taper sleeve of rolling mill

Abstract

The utility model discloses an outer taper sleeve of a rolling mill, and belongs to the technical field of outer taper sleeves of rolling mills. The outer taper sleeve of the rolling mill comprises a main body part, one end of the main body part is provided with a threaded connection end, the other end of the main body part is provided with an inner taper structure, the side, close to the inner taper structure, of the main body part is provided with annularly-distributed long holes at equal intervals, and the inner wall of the main body part is provided with axially-distributed lubricating grooves. A check ring groove is formed in the outer wall of the main body part. According to the outer taper sleeve of the rolling mill, the firmness and the stability of overall assembly are greatly enhanced by arranging the threaded connection end and adopting a dual-connection mode, higher positioning accuracy is achieved by the design of the inner taper structure and the elastic deformation capacity provided by the expansion groove, the concentricity of two components is ensured, and the service life of the rolling mill is prolonged. Torque transmission and axial force bearing are facilitated, and the pre-tightening force of the locking nut is increased through the design of the sealing ring in the sealing groove.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill outer tapered sleeve technology, and more specifically, to an outer tapered sleeve for rolling mills. Background Technology

[0002] Traditional rolling mill outer tapered sleeve designs are insufficient in terms of structural strength, ease of installation, and flexibility in adapting to different specifications. Especially for applications requiring both tapered and cylindrical connections, existing technologies often fail to provide ideal solutions. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a rolling mill outer tapered sleeve to solve the above-mentioned shortcomings.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model discloses an outer tapered sleeve for a rolling mill, comprising a main body. One end of the main body is provided with a threaded connection end. The threaded connection end has threads on its outer wall, which can easily fix the outer tapered sleeve with a lock nut, thereby enhancing the overall assembly's robustness and stability. The other end of the main body is provided with an inner tapered structure, which allows the outer tapered sleeve to achieve a tight fit with a shaft with a corresponding taper. The tapered fit is typically used for precise positioning and fixing, ensuring concentricity between two components, and effectively transmitting torque or bearing axial force. The main body is provided with annularly distributed elongated holes at equal intervals on the side near the inner tapered structure. The elongated holes increase the flexibility and adjustability of the structure, allowing for a larger deformation range. The inner wall of the main body is provided with axially distributed lubrication grooves, and the outer wall of the main body is provided with a retaining ring groove located near the threaded connection end.

[0006] Preferably, the lubrication groove extends to the inner wall of the threaded connection end, and a diffuser is provided at one end of the lubrication groove near the inner conical structure.

[0007] Preferably, a positioning groove is provided on the outer wall of the main body. The positioning groove helps to complete the assembly process quickly and accurately. An oil hole is provided in the center of the positioning groove to provide lubricating oil to the main body.

[0008] Preferably, the threaded connection end has an inner groove on the side away from the main body, and the inner groove has annularly distributed screw holes at equal intervals. The cylindrical structure is positioned by engaging with the inner groove, and the screw holes can fix the cylindrical structure to the threaded connection end.

[0009] Preferably, the diameter of the outer wall of the threaded connection end is smaller than the diameter of the main body, and the outer wall of the threaded connection end is provided with external threads. The cylindrical structure connected to the threaded connection end is also provided with external threads. The locking nut can simultaneously engage with the external threads on the threaded connection end and the cylindrical structure to achieve a dual connection between the threaded connection end and the cylindrical structure. A sealing groove is provided on the side of the threaded connection end near the main body, and a sealing ring is fitted in the sealing groove to achieve a sealing effect and increase the preload of the locking nut.

[0010] Preferably, the inner conical structure has expansion grooves at equal intervals, which allow the inner conical structure to undergo a certain degree of elastic deformation, and the expansion grooves are connected to one end of the elongated hole.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0012] This utility model discloses an outer tapered sleeve for a rolling mill. By setting a threaded connection end and adopting a double connection method, the overall assembly robustness and stability are greatly enhanced. The inner tapered structure design, combined with the elastic deformation capacity provided by the expansion groove, achieves higher positioning accuracy, ensuring concentricity between the two components, which is beneficial for torque transmission and bearing axial force. The sealing ring design in the sealing groove increases the preload of the locking nut, effectively improving the sealing effect and preventing lubricating oil leakage and the entry of external contaminants. The design of the expansion groove and the elongated hole makes the structure more flexible and adaptable to different working conditions, increasing the versatility and adaptability of the equipment. The preload generated by the spring steel retaining ring, combined with the friction force of the tapered surface, effectively prevents loosening or axial displacement caused by vibration, improving the reliability and safety of the equipment. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the outer cone sleeve of the rolling mill according to this utility model;

[0014] Figure 2 This is a side view of the outer cone sleeve of the rolling mill according to this utility model;

[0015] Figure 3 This is a longitudinal sectional view of the outer cone sleeve of the rolling mill according to this utility model;

[0016] Figure 4 This is an enlarged view of point A in this utility model;

[0017] Figure 5 This is a transverse sectional view of the outer cone sleeve of the rolling mill according to this utility model;

[0018] Figure 6 This is an enlarged view of section B of this utility model.

[0019] In the figure: 1. Main body; 11. Long hole; 12. Lubrication groove; 121. Diffuser; 13. Positioning groove; 131. Oil hole; 14. Retaining ring groove; 2. Threaded connection end; 21. Inner groove; 22. Threaded hole; 23. External thread; 24. Sealing groove; 3. Inner conical structure; 31. Expansion groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0022] Combination Figures 1-6 This utility model discloses a rolling mill outer tapered sleeve, comprising a main body 1. One end of the main body 1 is provided with a threaded connection end 2. The threaded connection end 2 has threads on its outer wall, which can easily fix the outer tapered sleeve with a lock nut, thereby enhancing the overall assembly's firmness and stability. The other end of the main body 1 is provided with an inner tapered structure 3. The inner tapered structure 3 allows the outer tapered sleeve to achieve a tight fit with a shaft with a corresponding taper. The tapered fit is usually used for precise positioning and fixing, ensuring the concentricity between two components, and effectively transmitting torque or bearing axial force.

[0023] Specifically, the threaded connection end 2 has an inner groove 21 on the side away from the main body 1. The inner groove 21 has annularly distributed screw holes 22 at equal intervals. The cylindrical structure is positioned by engaging with the inner groove 21, and the screw holes 22 fix the cylindrical structure to the threaded connection end 2. The diameter of the outer wall of the threaded connection end 2 is smaller than the diameter of the main body 1, and the outer wall of the threaded connection end 2 has external threads 23. The cylindrical structure connected to the threaded connection end 2 also has external threads 23, allowing for locking with screws. The locking nut engages with both the threaded connection end 2 and the external thread 23 on the cylindrical structure, achieving a dual connection between the threaded connection end 2 and the cylindrical structure. The locking nut simultaneously wraps around the connection between the threaded connection end 2 and the cylindrical structure, improving the overall connection firmness and strength. A sealing groove 24 is provided on the side of the threaded connection end 2 near the main body 1. The sealing groove 24 is actually a stepped structure formed by the outer wall of the threaded connection end 2 and the side wall of the main body 1. A sealing ring is fitted inside the sealing groove 24 to achieve a sealing effect and increase the preload of the locking nut.

[0024] The inner conical structure 3 has expansion grooves 31 at equal intervals. The expansion grooves 31 allow the inner conical structure 3 to undergo a certain degree of elastic deformation, thereby changing its diameter. The main body 1 has annularly distributed elongated holes 11 at equal intervals on the side close to the inner conical structure 3. The elongated holes 11 correspond one-to-one with the expansion grooves 31, and one end of the elongated holes 11 is connected to the expansion grooves 31. The elongated holes 11 increase the flexibility and adjustability of the structure, allowing for a larger deformation range.

[0025] The inner wall of the main body 1 is provided with axially distributed lubrication grooves 12, which extend to the inner wall of the threaded connection end 2. A diffuser 121 is provided at one end of the lubrication groove 12 near the inner conical structure 3. A positioning groove 13 is provided on the outer wall of the main body 1. The positioning groove 13 facilitates quick and precise assembly. An oil hole 131 is provided in the center of the positioning groove 13, through which lubricating oil is supplied to the main body 1. Furthermore, a retaining ring groove 14 is provided on the outer wall of the main body 1. The groove 14 is located near the threaded connection end 2 of the main body 1. The retaining ring groove 14 is connected to the expansion groove 31. A spring steel retaining ring is installed in the retaining ring groove 14. After the retaining ring is heated to 80-100℃ and expanded, it is embedded in the retaining ring groove 14. After natural cooling, the spring steel retaining ring shrinks to form a pre-tightening force. The retaining ring groove 14 is combined with the transition area of ​​the conical surface to achieve double axial fixation. The friction force of the conical surface and the pre-tightening force of the retaining ring work together to prevent loosening. The annular spring steel retaining ring can also prevent the axial displacement of the outer conical sleeve caused by vibration.

[0026] Working process: Align the inner conical structure 3 of the outer conical sleeve with the corresponding conical part of the roll shaft. Initial positioning is achieved through tight contact of the conical surfaces, ensuring concentricity. Due to the presence of the expansion groove 31, a certain degree of elastic deformation is allowed, thus achieving more precise positioning and fixation. After the cylindrical structure engages with the inner groove 21 of the threaded connection end 2, it is fixed by bolts and threaded holes 22, achieving initial connection. The locking nut is screwed into the external thread 23 of the threaded connection end 2, simultaneously wrapping around the threaded section of the cylindrical structure. Tightening is achieved through double thread engagement. The spring steel retaining ring is heated to 80-100℃ and then embedded into the retaining ring groove 14. Natural cooling and shrinkage form a preload, which, together with the friction of the conical surface, prevents axial displacement. In the sealing groove 2... 4. A fluororubber sealing ring is installed inside. The sealing ring is compressed by the pre-tightening force of the locking nut to achieve dynamic sealing. High-temperature grease is injected into the main body 1 through the oil hole 131. The grease is collected in the lubrication groove 12 and flows along the lubrication groove 12 to the diffuser 121, evenly covering the contact area of ​​the conical surface. When the roll rotates, the grease is thrown out from the oil reservoir by the centrifugal force, continuously lubricating the contact area between the conical surface and the bearing seat. The expansion groove 31 of the inner conical structure 3 undergoes elastic deformation under load, finely adjusting the tightness of the fit between the conical sleeve and the shaft to avoid stress concentration. Under vibration conditions, the spring steel retaining ring of the retaining ring groove 14 and the locking nut of the threaded connection end 2 jointly resist axial displacement, and the sealing ring simultaneously prevents grease leakage.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A roll mill outer cone sleeve comprising a main body portion (1), characterised in that: One end of the main body part (1) is provided with a threaded connection end (2), the other end of the main body part (1) is provided with an inner conical structure (3), the side of the main body part (1) close to the inner conical structure (3) is provided with long holes (11) distributed in a ring shape at equal distances, the inner wall of the main body part (1) is provided with lubricating grooves (12) distributed in an axial direction, and the outer wall of the main body part (1) is provided with a check ring groove (14).

2. The roll mill outer cone sleeve of claim 1, wherein: The lubricating grooves (12) extend to the inner wall of the threaded connection end (2), and one end of the lubricating grooves (12) close to the inner conical structure (3) is provided with a diffusion port (121).

3. The roll mill outer cone sleeve of claim 1, wherein: The outer wall of the main body part (1) is provided with a positioning waist groove (13), and the center of the positioning waist groove (13) is provided with an oil hole (131).

4. The roll mill outer cone sleeve of claim 1, wherein: The side of the threaded connection end (2) away from the main body part (1) is provided with an inner groove (21), and the inner groove (21) is provided with screw holes (22) distributed in a ring shape at equal distances.

5. The roll mill outer cone sleeve of claim 4, wherein: The outer wall of the threaded connection end (2) is smaller in diameter than the main body part (1), and the outer wall of the threaded connection end (2) is provided with external threads (23), and the side of the threaded connection end (2) close to the main body part (1) is provided with a sealing groove (24).

6. The roll mill outer cone sleeve of claim 1, wherein: The inner conical structure (3) is provided with expansion grooves (31) at equal distances, and the expansion grooves (31) are communicated with one end of the long holes (11).

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