Independently-driven synchronous reversible rolling mill gearbox
By designing independent drive synchronous reversible rolling mill gearboxes with dual input and dual outputs, the problems of large size and high cost of traditional rolling mill gearboxes are solved, and the mill gearboxes are miniaturized and cost-reduced, meeting the high-speed and miniaturization needs of strip cold rolling process.
Patent Information
- Application Number
- CN202423003577.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-12-06
AI Technical Summary
The gearbox of the traditional synchronous rolling mill is large in size, which is difficult to meet the development needs of the strip cold rolling process toward high speed and miniaturization. The size specifications of the motor and reducer are relatively large and the cost is high.
A dual-input and dual-output independent drive synchronous reversible rolling mill gear box is designed, and the input shaft is driven separately by two synchronous motors. The two-way rolling of the roll is achieved using independent transmission chains. The motor speed is controlled by using proximity switch feedback signal to ensure synchronization and reduce the number of transmission stages to achieve miniaturization.
The mill gearbox is miniaturized, the size and specifications of the motor and reducer are reduced, and the cost is reduced, while ensuring the synchronization of bidirectional rolling and high output speed.
Smart Images
Figure CN223282500U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical processing transmission, in particular to an independently driven synchronous reversible rolling mill gear box. Background Art
[0002] The synchronous reversible rolling mill gearbox is used for the high-speed bidirectional rolling process of thin carbon steel strips. The strip is rolled mainly by the rollers of the output shaft driven by the transmission chain. The traditional synchronous rolling mill has a single input and dual output shunt structure. The size of this reducer is large and requires a larger motor. As the cold rolling process of strips gradually develops towards high speed, reversibility and miniaturization, the rolling mill gearbox also needs to develop towards small specifications and high output speed. In order to solve this problem, through the research on the rolling process and the innovative design of the gearbox transmission system structure, a dual-input, dual-output independently driven synchronous transmission structure is designed. This type of machine is a bidirectional rolling mill with a small transmission speed ratio and a high rolling line speed. It is a medium and high-speed rolling mill. On the premise of meeting the technical requirements, the size of the motor and the reducer can be reduced simultaneously, saving capital costs, adapting to the future development needs of the industry, and having broad market prospects.
[0003] Therefore, it is necessary to design an independently driven synchronous reversible rolling mill gearbox with strong practicality and independent drive for bidirectional rolling. Utility Model Content
[0004] The purpose of the utility model is to provide an independently driven synchronous reversible rolling mill gearbox to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an independently driven synchronous reversible rolling mill gearbox, comprising a box body, a plurality of bearings arranged inside the box body, an input shaft and an output shaft respectively arranged inside the bearings, a proximity switch being arranged on one side of the output shaft, wherein the input shaft and the output shaft each have a pair, the input shaft and the output shaft face opposite directions, a gear 1 is fixedly connected to the surface of the input shaft, a gear 2 is arranged on the surface of the output shaft, and the gear 1 is meshed with the gear 2.
[0006] According to the above technical solution, the surfaces of the output shaft and the input shaft are both provided with a cover member 1, wherein the cover member 1 is a transparent cover that is gap-fitted with the shaft body and fixedly connected to the surface of the box body, and the ends of the output shaft and the input shaft are both provided with a cover member 2, wherein the cover member 2 is a blind cover with a solid center and fixedly connected to the surface of the box body.
[0007] According to the above technical solution, there is a pair of input shafts and output shafts arranged inside the box, which are symmetrical through the central axis of the box. The input shaft is located close to the outer surface of the box, and the output shaft is located close to the central axis of the box.
[0008] According to the above technical solution, there is a gap between the gears 2 arranged on the surface of the output shaft.
[0009] Compared with the prior art, the beneficial effects achieved by the present invention are:
[0010] By setting up a dual-input and dual-output structure, two synchronous motors respectively drive the input shafts 2 at both ends, and drive the rollers of the output shafts through their own independent transmission chains. The rotation of the input shaft 2 drives the surface-fixed gear 7 to rotate, and the gear 7 drives the meshing gear 2 8 on one side to rotate, and the output shaft 1 can also follow the rotation, thereby rolling the strip. The proximity switch 3 is located on one side of the dual output shaft, and can feedback the signal to control the real-time speed of the input-end variable frequency motor to ensure the synchronization of the dual output shaft speeds. The symmetrical output shaft 1 and input shaft 2 on both sides do not interfere with each other, realizing independent drive, bidirectional rolling, dual input, and dual output independent drive transmission. On the premise of meeting the technical requirements, the size specifications of the motor and the reducer can be reduced simultaneously to reduce costs. The gearbox has a small number of transmission stages, thereby realizing the miniaturization of the rolling mill gearbox and wider versatility. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0012] Figure 2 This is a schematic diagram of the box body of the utility model;
[0013] Figure 3 It is a cross-sectional view of the utility model;
[0014] In the figure: 1. Output shaft; 2. Input shaft; 3. Proximity switch; 4. Bearing; 5. Cover 1; 6. Cover 2; 7. Gear 1; 8. Gear 2; 9. Box. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.
[0016] See also Figure 1-3The utility model provides a technical solution: an independently driven synchronous reversible rolling mill gearbox, including a box body 9, a plurality of bearings 4 are arranged inside the box body 9, an input shaft 2 and an output shaft 1 are respectively arranged inside the bearing 4, a proximity switch 3 is arranged on one side of the output shaft, wherein the input shaft 2 and the output shaft 1 have a pair, the input shaft 2 and the output shaft 1 face oppositely, a gear 1 7 is fixedly connected to the surface of the input shaft 2, a gear 2 8 is arranged on the surface of the output shaft 1, the gear 1 7 is meshed with the gear 2 8, and the surfaces of the output shaft 1 and the input shaft 2 are both provided with Cover member 1 5, wherein cover member 1 5 is a transparent cover with a clearance fit through the shaft and fixedly connected to the surface of the box body 9, and cover member 2 6 is provided at the ends of the output shaft 1 and the input shaft 2, wherein cover member 2 6 is a solid cover at the center and fixedly connected to the surface of the box body 9, wherein the input shaft 2 and output shaft 1 arranged inside the box body 9 are a pair, respectively passing through the central axis of the box body 9, the input shaft 2 is located close to the outer surface of the box body 9, and the output shaft 1 is located close to the central axis of the box body 9, wherein there is a gap between the gears 2 8 arranged on the surface of the output shaft 1.
[0017] Specifically, the rolling mill gearbox has a dual-input, dual-output structure. It mainly uses two synchronous motors to drive the input shafts 2 at both ends respectively, and drives the rollers of the output shafts through their own independent transmission chains. The rotation of the input shaft 2 drives the fixed gear 7 on the surface to rotate. The gear 7 drives the meshing gear 2 8 on one side to rotate, and the output shaft 1 can also rotate accordingly, thereby rolling the strip. The bearing 4 is used to support the shaft body. The cover 1 5 is clearance-fitted through one end of the input shaft 2 and the output shaft 1, responsible for protecting the connection between the shaft body and the box body 1. The cover 2 6 protects the end of the shaft body. The proximity switch 3 is located on one side of the dual output shaft and can feedback the signal to control the real-time speed of the input end variable frequency motor to ensure the synchronization of the dual output shaft speeds. The symmetrical output shaft 1 and input shaft 2 on both sides do not interfere with each other, realizing independent drive, bidirectional rolling, dual input, and dual output independent drive transmission. While meeting technical requirements, the size specifications of the motor and reducer can be reduced simultaneously to reduce costs. The gearbox has a small number of transmission stages, thereby achieving miniaturization and wider versatility.
[0018] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
Claims
1. An independently driven synchronous reversible rolling mill gearbox, comprising a housing (9), characterized in that: A plurality of bearings (4) are provided inside the housing (9), and an input shaft (2) and an output shaft (1) are provided inside the bearings (4), respectively. A proximity switch (3) is provided on one side of the output shaft, wherein the input shaft (2) and the output shaft (1) each have a pair, and the input shaft (2) and the output shaft (1) face opposite directions. A gear 1 (7) is fixedly connected to the surface of the input shaft (2), and a gear 2 (8) is provided on the surface of the output shaft (1), and the gear 1 (7) is meshed with the gear 2 (8).
2. The independently driven synchronous reversible rolling mill gearbox according to claim 1, characterized in that: The surfaces of the output shaft (1) and the input shaft (2) are both provided with a cover member (5), wherein the cover member (5) is a transparent cover that is fitted with a clearance through the shaft body and is fixedly connected to the surface of the box body (9). The ends of the output shaft (1) and the input shaft (2) are both provided with a cover member (6), wherein the cover member (6) is a blind cover with a solid center and is fixedly connected to the surface of the box body (9).
3. The independently driven synchronous reversible rolling mill gearbox according to claim 1, characterized in that: The input shaft (2) and the output shaft (1) are provided inside the housing (9) in pairs, and are symmetrically arranged through the central axis of the housing (9). The input shaft (2) is located close to the outer surface of the housing (9), and the output shaft (1) is located close to the central axis of the housing (9).
4. The independently driven synchronous reversible rolling mill gearbox according to claim 3, characterized in that: There is a gap between the gear 2 (8) arranged on the surface of the output shaft (1).