CN216027067U

CN216027067U - Compact modular rolling mill with low center of gravity

Info

Publication number: CN216027067U
Application number: CN202120260825.2U
Authority: CN
Inventors: 张赵宁; 何家宝; 蔡永朋; 芦强; 陈龙; 孙保生; 谌喜
Original assignee: Huatian Engineering and Technology Corp MCC
Current assignee: Huatian Engineering and Technology Corp MCC
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-03-15
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a compact modular rolling mill with a low center of gravity. The rolling mill comprises a rolling mill box body, wherein a transmission gear box, a first roller box and a second roller box are arranged in the rolling mill box body; the transmission gear box comprises a straight gear box and a bevel gear box which are arranged side by side, an input shaft of the straight gear box is connected with an output shaft of the transmission motor through a coupler, output shafts are arranged on two sides of the input shaft of the straight gear box, and the input shaft is in transmission connection with the output shafts through gears; two output shafts of the straight gear box are respectively connected with a first bevel gear and a second bevel gear of the bevel gear box. The utility model adopts an integrated framework, and omits a universal shaft between the traditional bevel gear box and the gear box, so that the equipment arrangement is more compact; the equipment gravity center is reduced, the stability of the rolling mill body is improved, meanwhile, the universal spindle is eliminated, and the running stability of the modular rolling mill set is integrally improved.

Description

Compact modular rolling mill with low center of gravity

Technical Field

The utility model belongs to the technical field of rod and wire rolling equipment, and particularly relates to a compact modular rolling mill with a low gravity center, which is applied to a rod and wire finish rolling procedure.

Background

In recent years, a high-speed continuous rolling unit with top crossing of 45 degrees is widely applied to production of rods and wires, and the rolling speed of a high-speed finishing mill with top crossing of 45 degrees can reach 110m/s for part of small-specification wire products; when rolling small-specification bars, a top-crossing 45-degree high-speed finishing mill group is adopted to increase the rolling speed to 42 m/s. In order to solve the problem of dynamic speed drop of steel biting in the rolling process in the early stage, rolling mill equipment suppliers represented by Morgan all adopt a centralized transmission mode, and drive a speed increasing box with double output shafts through a driving motor, and simultaneously drive 8-10 finishing mills fixed on bases on two sides, and realize mechanical linkage among the rolling mills.

In order to solve the problem that the speed ratio between rolling mills is fixed and cannot be adjusted during centralized transmission, equipment manufacturers at home and abroad push out independent transmission modular rolling mills, and the independent transmission modular rolling mills can be divided into two modes of one-to-one and one-to-two according to the output quantity of gear boxes. The speed ratio of the rolling mill can be adjusted on line through independent transmission, but in the actual use process, a plurality of problems still exist: (1) compared with the modularized rolling mill body, the gear distribution box and the transmission motor are large in size, and the overall layout of the equipment is too loose; (2) the rolling mill body is connected with the gear box through a universal spindle, and the torsional vibration of the universal spindle is transmitted to the rolling mill body to cause the irregular vibration of the rolling mill body; (3) the output shaft of the roller box is positioned above the output shaft of the bevel gear box, so that the rolling center line and the center of gravity of the rolling mill body are too high, and the rolling stability is influenced; (4) the moment of torsion of roller box second output shaft is through the indirect transmission of first output shaft, and the loss of transmission efficiency can lead to the speed of two output shafts of roller box not matching during indirect transmission, can appear skidding phenomenon when high-speed rolling.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a compact modular rolling mill with a low gravity center, which is used for solving the problems of loose overall layout of equipment, overlarge vibration of rolling mill equipment, low rolling stability, high-speed rolling slip and the like.

In order to achieve the aim, the compact modular rolling mill with low gravity center comprises a rolling mill box body, wherein a transmission gear box, a first roller box and a second roller box are arranged in the rolling mill box body; the transmission gear box comprises a straight gear box and a bevel gear box which are arranged side by side, an input shaft of the straight gear box is connected with an output shaft of the transmission motor through a coupler, output shafts are arranged on two sides of the input shaft of the straight gear box, and the input shaft is in transmission connection with the output shafts through gears; two output shafts of the straight gear box are respectively connected with a first bevel gear and a second bevel gear of the bevel gear box.

Furthermore, bevel gear box output shafts meshed with the first bevel gear and the second bevel gear are respectively arranged in the bevel gear boxes; output shafts of the first roller box and the second roller box are meshed with an output shaft of the bevel gear box through gears, and the output shafts of the first roller box and the second roller box are located below the output shaft of the bevel gear box. The height of a rolling center line is reduced while the gravity center of the equipment is reduced, the stability of the rolling mill body is improved, and the running stability of the modular unit is improved;

furthermore, the modular rolling mill body and the transmission gear box adopt an integrated framework. A universal spindle between a traditional bevel gear box and a gear box is omitted, so that the equipment arrangement is more compact, and meanwhile, irregular vibration of a rolling mill body caused by torsional vibration of the universal spindle can be eliminated;

compared with the existing modular rolling mill, the modular rolling mill has the beneficial effects that: an integrated framework is adopted, and a universal shaft between the traditional bevel gear box and the gear box is omitted, so that the equipment arrangement is more compact; the equipment gravity center is reduced, the stability of the rolling mill body is improved, meanwhile, the torsional vibration of the universal spindle is eliminated due to the fact that the universal spindle is omitted, and the running stability of the modular rolling mill unit is integrally improved; two output shafts of the roll box are mechanically connected with an output shaft of the bevel gear box independently and noninterference, so that the transmission efficiency of torque is improved, and the phenomenon of skidding in the high-speed rolling process caused by inconsistent rotating speeds of the upper output shaft and the lower output shaft of the roll box is avoided.

Drawings

FIG. 1 is an internal schematic view of an embodiment of the compact modular rolling mill of the present invention having a low center of gravity.

Fig. 2 is a schematic structural diagram of the embodiment shown in fig. 1.

FIG. 3 is a schematic view 1 of the first roll box roll system of FIG. 1.

Fig. 4 is a schematic view 2 of the second roll box roll system of fig. 1.

Reference numbers in the figures: the automatic rolling mill comprises a rolling mill box body 1, a first rolling box 2, a transmission gear box 3, a second rolling box 4, a coupler 5, a transmission motor 6, bevel gear box input shafts 2-1 and 4-1, bevel gear box output shafts 2-2 and 4-2, first roller box output shafts 2-3 and 4-3, roller box intermediate transmission shafts 2-4 and 4-4, roller box second output shafts 2-5 and 4-5,

bevel gear pairs

211 and 411, first

straight gear pairs

221 and 421, second

straight gear pairs

222 and 422 and third

straight gear pairs

231 and 431.

Detailed Description

The utility model is described in further detail below with reference to the following figures and specific embodiments:

examples

As shown in fig. 1 and 2, the utility model provides a compact modular rolling mill with a low gravity center, which comprises a rolling mill box body 1, a first rolling mill box 2, a transmission gear box 3, a second rolling mill box 4, a coupling 5 and a transmission motor 6. The transmission gear box 3 comprises a straight gear box and a bevel gear box, an input shaft of the straight gear box is connected with an output shaft of the transmission motor 6 through a coupler 5, two input shafts 2-1 and 4-1 of the bevel gear box are respectively connected with

bevel gear pairs

211 and 411, and the gear box is positioned in the rolling mill box body, so that the output torque of the transmission motor is divided into two parts, and the compactness of the equipment is improved.

In the embodiment, a first rolling box 2 and a second rolling box 4 are positioned in the same box body 1, a first output shaft 2-3 of the rolling box of the first rolling box, a second output shaft 2-5 of the rolling box and an input shaft 2-1 of a bevel gear box are arranged at an angle of 45 degrees, a first output shaft 4-3 of the rolling box of the second rolling box, a second output shaft 4-5 of the rolling box and the input shaft 4-1 of the bevel gear box are arranged at an angle of 45 degrees, the first rolling box and the second rolling box form an included angle of 90 degrees, and a spatial distribution layout with a top cross angle of 45 degrees is formed in the same rolling central line, so that the torsion-free rolling of high-speed rods/wires is realized.

As shown in fig. 1 and 2, the first and second roll boxes transfer torque to the first output shaft of the roll box through the

spur gear pairs

231 and 431 and transfer torque to the second output shaft of the roll box through the spur gear pairs 221 → 222 and 421 → 422, and the two groups of output torque transfer paths are independent and do not interfere with each other, so that the rotation speeds of the upper and lower transmission shafts can be ensured to be consistent.

In the embodiment, the first output shaft 2-3 of the roller box and the second output shaft 2-5 of the roller box of the first roller box 2 are positioned below the output shaft 2-2 of the bevel gear box, and the first output shaft 4-3 of the roller box and the second output shaft 4-5 of the roller box of the second roller box 4 are positioned below the output shaft 4-2 of the bevel gear box, so that the gravity center of equipment is lowered, the height of a rolling center line is lowered, the stability of a rolling mill body is improved, and the running stability of a modularized unit is improved.

The utility model has been described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the specific implementation in the above-described manner, and it is within the scope of the utility model to apply the inventive concept and solution to other applications without substantial modification.

Claims

1. The compact modular rolling mill with the low gravity center is characterized by comprising a rolling mill box body, wherein a transmission gear box, a first rolling mill box and a second rolling mill box are arranged in the rolling mill box body; the transmission gear box comprises a straight gear box and a bevel gear box which are arranged side by side, an input shaft of the straight gear box is connected with an output shaft of the transmission motor through a coupler, output shafts are arranged on two sides of the input shaft of the straight gear box, and the input shaft is in transmission connection with the output shafts through gears; two output shafts of the straight gear box are respectively connected with a first bevel gear and a second bevel gear of the bevel gear box.

2. A compact modular rolling mill with a low center of gravity as claimed in claim 1 wherein bevel gear box output shafts are provided in said bevel gear boxes respectively in engagement with the first bevel gear and the second bevel gear;

output shafts of the first roller box and the second roller box are meshed with an output shaft of the bevel gear box through gears, and the output shafts of the first roller box and the second roller box are located below the output shaft of the bevel gear box.

3. A compact modular rolling mill with a low center of gravity as set forth in claim 1 wherein the modular rolling mill body and the drive gearbox are of an integral construction.