Locking mechanism for spindle nose of connecting shaft of blooming mill
By designing a locking mechanism on the shaft head of the billet rolling mill, and utilizing the elastically connected tenon and groove structure, the vibration problem of the rolling mill under high-speed conditions was solved, thereby improving the reliability and production efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-14
AI Technical Summary
Existing billet rolling mills lack axial limiting and locking mechanisms under high-speed conditions, leading to mill vibrations that affect equipment reliability and production efficiency.
Design a locking mechanism for the head of the rolling mill shaft. The mounting base and the elastically connected tenon are adapted to the groove of the rolling mill shaft. The compression and rebound of the spring are used to lock the rolling mill shaft in the axial direction to prevent vibration.
Without affecting the normal installation of the roll shaft, it provides axial locking force to the roll shaft, prevents mill vibration, and improves the reliability and production efficiency of the equipment.
Smart Images
Figure CN224114882U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of steel rolling equipment structure, and in particular relates to a locking mechanism for the shaft head of a billet rolling mill. Background Technology
[0002] The mill coupling is a crucial component in the billet rolling mill, transmitting motion and torque. It connects the motor to the reducer, the reducer to the rolls, and other parts, ensuring the mill's normal operation. Specifically, the motor transmits power to the reducer via the coupling, which then drives the rolls through the coupling. The coupling compensates for axial, radial, and angular misalignments caused by equipment vibration, thermal expansion, or installation errors. The safety coupling cuts off power transmission in case of overload, preventing equipment damage. Therefore, the coupling is a core transmission component in the steel rolling production line, and its reliability directly affects production efficiency and equipment lifespan.
[0003] Existing technologies, such as Figure 3 As shown, the rolling mill and the connecting shaft are connected to the rolling mill shaft head through the connecting shaft head, and there are flat square structures at both ends of the shaft head to transmit motion and torque.
[0004] The above structure can maintain reliable operation under low-speed conditions; however, under high-speed conditions, because there is no limiting and locking mechanism in the axial direction, the rolling mill will vibrate, which will have an adverse effect on the overall reliability of the equipment, and thus affect the life of the equipment and production efficiency. Utility Model Content
[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a locking mechanism for the shaft head of a billet rolling mill, which solves the problem that in the prior art, the billet rolling mill will vibrate under high-speed conditions because there is no axial limiting locking mechanism, which adversely affects the overall working reliability of the equipment, and thus affects the life and production efficiency of the equipment.
[0006] To achieve the above and other related objectives, this utility model provides a locking mechanism for the shaft head of a billet rolling mill, which is installed on the shaft head of the billet rolling mill and used to lock the roll shaft inserted into the shaft head axially; comprising:
[0007] Mounting bracket, installed on the shaft head;
[0008] The tenon is elastically connected to the mounting base via a spring on its inner side, and its outer side is adapted to the shape of the groove on the roll shaft.
[0009] When the roll shaft is inserted into the connecting shaft head, the spring is compressed and the tenon moves radially outward; when the tenon moves relative to the groove on the roll shaft, the spring rebounds and the tenon engages with the groove on the roll shaft.
[0010] Optionally, the mounting base includes a base body and a waterproof and dustproof cover; the base body is a hollow cylindrical structure, and the waterproof and dustproof cover seals the upper opening of the base body by connecting screws; the tenon is a "U" shaped structure, and the outer wall of the tenon slides into the inner wall of the base body; the top of the spring is connected to the bottom of the waterproof and dustproof cover, and the bottom of the spring is connected to the inner bottom of the tenon.
[0011] Optionally, the inner wall of the seat is provided with a first step, and the inner diameter of the seat narrows from top to bottom; the outer wall of the tenon is provided with a second step, and the outer diameter of the tenon narrows from top to bottom; when the first step and the second step abut against each other, the tenon is prevented from moving radially inward.
[0012] Optionally, it also includes a guide post that extends from the center of the waterproof and dustproof cover to the bottom center of the tenon; the spring is fitted onto the guide post.
[0013] Optionally, the guide post is a guide screw that screws into the center of the spring from the center of the waterproof and dustproof cover.
[0014] Optionally, a sealing ring is provided between the outer wall of the seat and the shaft head, and a sealing ring is provided between the inner wall of the seat and the outer wall of the tenon.
[0015] As described above, the locking mechanism for the shaft head of a billet rolling mill according to this utility model has at least the following beneficial effects:
[0016] The locking mechanism of the roller head of this billet rolling mill is elastically connected to the mounting base via the inner side of the tenon. The outer side of the tenon is adapted to the shape of the groove on the roller shaft. When the roller shaft is inserted into the roller head, the spring is compressed, and the tenon moves radially outward. When the tenon moves relative to the groove on the roller shaft, the spring rebounds, and the tenon is engaged in the groove on the roller shaft. This design provides axial locking force for the installed roller shaft without affecting its normal installation. When the billet rolling mill is operating at high speed, the locking force provided by this mechanism prevents the mill from vibrating, thereby improving the overall reliability of the equipment, increasing its lifespan and production efficiency. Attached Figure Description
[0017] Figure 1 The diagram shows the installation position of the locking mechanism for the shaft head of a billet rolling mill according to this utility model.
[0018] Figure 2 The diagram shown is a structural schematic of a locking mechanism for the shaft head of a billet rolling mill according to this utility model.
[0019] Figure 3 The flat rectangular connection structure shown in the background art is illustrated.
[0020] Component designation explanation
[0021] Locking mechanism 1, mounting base 11, base body 111, waterproof and dustproof cover 112, spring 12, tenon 13, first step 14, second step 15, connecting screw 16, guide screw 17, sealing ring 18, connecting shaft head 2, roller shaft 3, groove 31. Detailed Implementation
[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0023] Please see Figures 1 to 3 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0024] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.
[0025] Please see Figure 1 This utility model provides a locking mechanism 1 for the shaft head of a billet rolling mill, which is installed on the shaft head 2 of the billet rolling mill and is used to lock the roll shaft 3 inserted into the shaft head 2 in the axial direction. This solves the problem that in the prior art, the billet rolling mill will vibrate under high-speed conditions because there is no axial limiting locking mechanism 1, which will have an adverse effect on the overall working reliability of the equipment, and thus affect the service life and production efficiency of the equipment.
[0026] The specific structure of the locking mechanism 1 will be described in detail below.
[0027] like Figure 1 and Figure 2 As shown, the locking mechanism 1 includes a mounting base 11, which is mounted on the shaft head 2; providing a stable mounting support point for the locking mechanism 1.
[0028] like Figure 1 and Figure 2 As shown, the locking mechanism 1 includes a tenon 13, the inner side of which is elastically connected to the mounting base 11 by a spring 12, and the outer side of which is adapted to the shape of the groove 31 on the roll shaft 3.
[0029] like Figure 1 and Figure 2 As shown, when the roll shaft 3 is inserted into the connecting shaft head 2, the spring 12 is compressed, and the tenon 13 moves radially outward; when the tenon 13 moves relative to the groove 31 on the roll shaft 3, the spring 12 rebounds, and the tenon 13 engages with the groove 31 on the roll shaft 3; the above-mentioned locking mechanism 1 provides axial locking force for the installed roll shaft 3 without affecting the normal installation of the roll shaft 3. When the billet mill is in high-speed operation, the locking force provided by the locking mechanism 1 prevents the mill from vibrating, thereby improving the overall working reliability of the equipment, and increasing the service life and production efficiency of the equipment.
[0030] In another implementation, please refer to Figure 2 The mounting base 11 includes a base body 111 and a waterproof and dustproof cover plate 112. The base body 111 is a hollow cylindrical structure, and the waterproof and dustproof cover plate 112 closes the upper opening of the base body 111 by connecting screws 16. The tenon 13 is a "U"-shaped structure, and the outer wall of the tenon 13 slides in conjunction with the inner wall of the base body 111. The top of the spring 12 is connected to the bottom of the waterproof and dustproof cover plate 112, and the bottom of the spring 12 is connected to the inner bottom of the tenon 13. The structure of this embodiment provides a stable compression and rebound environment for the spring 12. At the same time, the design of the waterproof and dustproof cover plate 112 prevents water vapor and impurities from entering the interior of the base body 111 and the interior of the tenon 13, thus preventing corrosion of the spring 12. This fully ensures the working reliability of the locking mechanism 1.
[0031] In another implementation, please refer to Figure 2 The inner wall of the seat 111 is provided with a first step 14, and the inner diameter of the seat 111 narrows from top to bottom; the outer wall of the tenon 13 is provided with a second step 15, and the outer diameter of the tenon 13 narrows from top to bottom; when the first step 14 and the second step 15 abut against each other, the tenon 13 is prevented from moving radially inward; thereby preventing the tenon 13 from falling off and ensuring the working reliability of the locking mechanism 1.
[0032] In another implementation, please refer to Figure 2It also includes a guide post that extends from the center of the waterproof and dustproof cover 112 to the bottom center of the tenon 13; the spring 12 is fitted on the guide post; so that the spring 12 can be stable during compression and rebound without misalignment, thus ensuring the reliability of the movement of the tenon 13, and thus ensuring the working reliability of the locking mechanism 1.
[0033] In another implementation, please refer to Figure 2 The guide post is a guide screw 17, which is screwed into the center of the spring 12 from the center of the waterproof and dustproof cover plate 112; the structure of this embodiment is simple and easy to assemble.
[0034] In other implementations, such as Figure 2 As shown, a sealing ring 18 is provided between the outer wall of the seat 111 and the shaft head 2, and a sealing ring 18 is provided between the inner wall of the seat 111 and the outer wall of the tenon 13; to prevent moisture and impurities from corroding the interior of the locking mechanism 1.
[0035] In summary, this invention features an elastic connection between the inner side of the tenon 13 and the mounting base 11, with the outer side of the tenon 13 matching the shape of the groove 31 on the roll shaft 3. When the roll shaft 3 is inserted into the connecting shaft head 2, the spring 12 is compressed, and the tenon 13 moves radially outward. When the tenon 13 moves relative to the groove 31 on the roll shaft 3, the spring 12 rebounds, causing the tenon 13 to engage with the groove 31 on the roll shaft 3. This design provides axial locking force for the installed roll shaft 3 without affecting its normal installation. Under high-speed operation of the billet mill, the locking force provided by this locking mechanism 1 prevents mill vibration, thereby improving the overall reliability of the equipment and increasing its lifespan and production efficiency. Therefore, this invention effectively overcomes the shortcomings of existing technologies and has high industrial application value.
[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A locking mechanism for the shaft head of a billet rolling mill, characterized in that: Installed on the shaft head of the billet rolling mill, it is used to lock the roll shaft inserted into the shaft head axially. include: Mounting bracket, installed on the shaft head; The tenon is elastically connected to the mounting base via a spring on its inner side, and its outer side is adapted to the shape of the groove on the roll shaft. When the roller shaft is inserted into the connecting shaft head, the spring is compressed and the tenon moves radially outward; When the tenon moves relative to the groove on the roll shaft, the spring rebounds, and the tenon engages with the groove on the roll shaft.
2. The locking mechanism for the shaft head of a billet rolling mill according to claim 1, characterized in that: The mounting base includes a base body and a waterproof and dustproof cover plate; The base is a hollow cylindrical structure, and the waterproof and dustproof cover seals the upper opening of the base with connecting screws; The tenon has a "∪" shaped structure, and the outer wall of the tenon and the inner wall of the base body slide together. The top of the spring is connected to the bottom of the waterproof and dustproof cover, and the bottom of the spring is connected to the inner bottom of the tenon.
3. The locking mechanism for the shaft head of a billet rolling mill according to claim 2, characterized in that: The inner wall of the seat is provided with a first step, and the inner diameter of the seat decreases from wide to narrow from top to bottom; The outer wall of the tenon is provided with a second step, and the outer diameter of the tenon narrows from top to bottom; When the first step and the second step abut against each other, the tenon is prevented from moving radially inward.
4. The locking mechanism for the shaft head of a billet rolling mill according to claim 3, characterized in that: It also includes a guide post that extends from the center of the waterproof and dustproof cover to the bottom center of the tenon; The spring is mounted on the guide post.
5. The locking mechanism for the shaft head of a billet rolling mill according to claim 4, characterized in that: The guide post is a guide screw that screws into the center of the spring from the center of the waterproof and dustproof cover.
6. The locking mechanism for the shaft head of a billet rolling mill according to claim 2, characterized in that: A sealing ring is provided between the outer wall of the seat and the shaft head, and a sealing ring is provided between the inner wall of the seat and the outer wall of the tenon.