A heavy-duty bracket for a universal joint axle of a finish rolling mill

Abstract

The utility model relates to a heavy bracket of universal joint axle of finishing mill belongs to metallurgical industry rolling mill mechanical transmission moving support structure technical field. Technical scheme is: the cover plate (8) is fixed on the support frame (9) top, is equipped with upper bearing seat (3) and lower bearing seat (10) on the support frame (9), two opposite arrangement's gyro wheel (5) are arranged on the cover plate (8) respectively, every gyro wheel (5) all is equipped with a balance chain (7), and the upper end of two balance chains (7) is connected with upper bearing seat suspender (6) respectively, and upper bearing seat suspender (6) is fixed in upper bearing seat (3) both ends, and the lower end of two balance chains (7) is connected with corresponding lower bearing seat lug (2) respectively. The utility model can improve the rigidity and stability between finishing mill and universal joint axle, guarantee the reliability of finishing mill transmission, prolong the life of main transmission equipment and joint axle coupling.

Description

Technical Field

[0001] This utility model relates to a heavy-duty universal joint bracket for a finishing mill, belonging to the technical field of transmission and moving support structure for steel rolling machinery in the metallurgical industry. Background Technology

[0002] The universal joint coupling bracket for finishing mills is designed to address the positional changes of the universal joint coupling caused by dynamic adjustments in the roll gap during the high-precision rolling process. It provides a stable yet adequately compensating rigid support between the finishing mill and the universal joint coupling. Its core lies in designing a high-performance support bearing system supplemented by reliable lubrication, sealing, and cooling, while ensuring the required displacement compensation capabilities in both vertical and horizontal directions. Existing brackets, due to their unreasonable design, lead to problems such as bending deformation and vibration caused by the weight of the large and heavy coupling, as well as instability in high-torque transmission, thus affecting the reliability of the finishing mill drive and the lifespan of the main drive equipment and the coupling. Utility Model Content

[0003] The purpose of this utility model is to provide a heavy-duty bracket for the universal joint of a finishing mill, which can improve the rigidity and stability between the finishing mill and the universal joint, ensure the reliability of the finishing mill transmission, extend the service life of the main transmission equipment and the joint coupling, and solve the problems existing in the background art.

[0004] The technical solution of this utility model is: A heavy-duty universal joint bracket for a finishing mill includes a lower bearing housing lug, an upper bearing housing, rollers, an upper bearing housing hanger rod, a balance chain, a cover plate, a support frame, and a lower bearing housing. The cover plate is fixed on the support frame, which has an upper bearing housing and a lower bearing housing. Two oppositely arranged rollers are respectively mounted on the cover plate, and each roller has a balance chain. The upper ends of the two balance chains are respectively connected to the upper bearing housing hanger rod, which is fixed at both ends of the upper bearing housing. The lower ends of the two balance chains are respectively connected to the corresponding lower bearing housing lug.

[0005] Furthermore, the lower ends of the two balance chains are respectively connected to the lower bearing seat lugs via disc springs.

[0006] Furthermore, the support frame has a horizontal connecting plate on top, and the cover plate is fixedly connected to the horizontal connecting plate on the support frame by bolts.

[0007] Furthermore, wear-resistant strips are provided on the contact surfaces of the support frame with the upper bearing housing and the bearing housing.

[0008] The beneficial effects of this utility model are: it can improve the rigidity and stability between the finishing mill and the universal joint, ensure the reliability of the finishing mill transmission, and extend the service life of the main transmission equipment and the joint coupling. Attached Figure Description

[0009] Figure 1 This is the overall assembly drawing of the present invention in its online working state; Figure 2 This is the new main view of this utility model; Figure 3 This is the left view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 for Figure 4 A magnified view of a portion of the image; Figure 6 This is a drawing of the cover plate part of this utility model; Figure 7 This is an isometric drawing of the present invention; In the diagram: 1. Disc spring; 2. Lower bearing seat lug; 3. Upper bearing seat; 4. Horizontal connecting plate; 5. Roller; 6. Upper bearing seat rod; 7. Balance chain; 8. Cover plate; 9. Support frame; 10. Lower bearing seat; 11. Wear-resistant strip; 12. Flat head sleeve; 13. Heavy-duty bracket; 14. Universal joint shaft; 15. Reducer; 16. Finishing mill. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings and examples.

[0011] See attached document Figure 1-7 A heavy-duty universal joint bracket for a finishing mill includes a lower bearing seat lug 2, an upper bearing seat 3, rollers 5, an upper bearing seat rod 6, a balance chain 7, a cover plate 8, a support frame 9, and a lower bearing seat 10. The cover plate 8 is fixed on the support frame 9, and the support frame 9 is provided with the upper bearing seat 3 and the lower bearing seat 10. Two oppositely arranged rollers 5 are respectively set on the cover plate 8, and each roller 5 is provided with a balance chain 7. The upper ends of the two balance chains 7 are respectively connected to the upper bearing seat rod 6, which is fixed at both ends of the upper bearing seat 3. The lower ends of the two balance chains 7 are respectively connected to the corresponding lower bearing seat lug 2.

[0012] In this example, refer to the appendix. Figure 1-7 This heavy-duty bracket, comprising a disc spring 1, a lower bearing housing lug 2, an upper bearing housing 3, a horizontal connecting plate 4, a roller 5, an upper bearing housing lifting rod 6, a balance chain 7, a cover plate 8, a support frame 9, a lower bearing housing 10, and a wear-resistant strip 11, weighs a total of 16716.6 kg. It provides reliable rigid support for the entire universal joint 14, preventing excessive bending deformation of the universal joint 14 due to its own weight, ensuring that the universal joint 14 maintains a stable position and alignment during the rolling process, thereby guaranteeing the stability and efficiency of power transmission and ensuring continuous and stable production of the rolling mill.

[0013] The support frame 9 is topped with a horizontal connecting plate 4, which is 30mm thick. The cover plate 8 is 60mm thick and made of Q355B material. Four rectangular holes are machined on the cover plate 8, which fits with the support frame 9 with a 0.2mm clearance. The cover plate 8 is connected to the horizontal connecting plate 4 on the support frame 9 by four M24*110 grade 8.8 high-strength bolts to ensure stability during the finishing mill rolling process.

[0014] A 100mm wide wear-resistant strip 11, including a dry oil channel, is provided on the contact surface between the support frame 9 and the bearing housing to increase the contact area between the bearing housing and the support frame, and to ensure the horizontality of the connecting shaft and the parallelism of the two flat head sleeves.

[0015] Rollers 5 are provided on both sides of the cover plate 8 to change the direction of action of the balance chain 7. The balance chain 7 supports the weight of the universal joint shaft 14 and is connected to the two lower bearing seat lugs 2 of the lower bearing seat 10 by disc springs 1, which play a role in shock absorption and self-alignment.

Claims

1. A heavy-duty universal joint bracket for a finishing mill, characterized in that: It includes a lower bearing seat lug (2), an upper bearing seat (3), a roller (5), an upper bearing seat rod (6), a balance chain (7), a cover plate (8), a support frame (9), and a lower bearing seat (10). The cover plate (8) is fixed on the support frame (9). The support frame (9) is provided with an upper bearing seat (3) and a lower bearing seat (10). Two rollers (5) arranged opposite to each other are respectively set on the cover plate (8). Each roller (5) is provided with a balance chain (7). The upper ends of the two balance chains (7) are respectively connected to the upper bearing seat rod (6). The upper bearing seat rod (6) is fixed at both ends of the upper bearing seat (3). The lower ends of the two balance chains (7) are respectively connected to the corresponding lower bearing seat lug (2).

2. The heavy-duty universal joint bracket for a finishing mill according to claim 1, characterized in that: The lower ends of the two balance chains (7) are connected to the lower bearing seat lugs (2) via disc springs (1).

3. A heavy-duty universal joint bracket for a finishing mill according to claim 1 or 2, characterized in that: The support frame (9) has a horizontal connecting plate (4) on top, and the cover plate (8) is fixedly connected to the horizontal connecting plate (4) on the support frame (9) by bolts.

4. A heavy-duty universal joint bracket for a finishing mill according to claim 1 or 2, characterized in that: The contact surfaces of the support frame (9) with the upper bearing seat (3) and the bearing seat (10) are provided with wear-resistant strips (11).

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