CN103406360A - Single transmission mill - Google Patents

Abstract

The invention discloses a rolling mill with independent transmission, which includes a roll box, a gear box and a motor, one motor corresponds to one gear box, and the motor and the gear box are connected through a transmission device, one gear box corresponds to one roll box, and the gear box It is connected with the roller box through gear transmission. The independent transmission rolling mill of the present invention, since each rolling mill is driven by a separate motor, the equipment structure is greatly simplified compared with the centralized transmission, and the equipment structure is simple and compact, which is more conducive to improving the stability of the high-speed operation of the equipment; when any rolling mill roll When the ring is worn, the reduction of the roll diameter caused by the wear of the roll ring can be compensated by fine-tuning the motor speed, thereby improving the utilization rate of the roll ring and reducing the number of spare parts of the roll ring; and there is no fixed interval between individual passes The reduction ratio makes the pass design more flexible; at the same time, the motor power is smaller and the spare parts are less, which can effectively reduce the cost of investment and production operation.

Description

Separate drive mill

technical field

The invention relates to a rolling mill, in particular to a high-speed cantilever rolling mill.

Background technique

In modern wire rod production, the method of increasing the final rolling speed of wire rod is usually adopted to obtain higher output. At present, the guaranteed final rolling speed of high-speed wire rod production can reach 110m/s or even higher. In order to achieve such a high rolling speed, a suitable high-speed wire rod rolling mill is required. The currently widely used equipment is a wire rod finishing mill. Through high-speed rolling of a wire rod finishing mill, products that meet the size requirements can be obtained and the output of wire rods can be guaranteed. In the past, the dynamic speed drop in the high-speed rolling process could not be solved at such a high rolling speed, so the traditional wire rod finishing mills used centralized transmission, that is, a large motor simultaneously drives 8 to 10 wire rod finishing mills to realize Top-crossing 45° twist-free rolling, mechanically drives multiple sets of gear sets through a gear box and two long shafts, drives the rolling mill and realizes mechanical interlocking, so as to solve the problem of dynamic speed drop and achieve stable production.

Although mechanical interlocking can be realized through centralized transmission, there are still many problems:

1) The equipment structure is relatively complex, the transmission chain is long, and the mechanical transmission between the rolling mills is highly dependent, especially the first-stage gearbox. Once a certain part fails, the entire rolling mill will not be able to operate.

2) Due to the centralized transmission, when the roller rings of a certain rolling mill wear and need to be replaced, all the roller rings must be replaced at the same time to ensure the smooth progress of rolling.

3) The centralized transmission and the fixed transmission ratio between each rolling mill make the pass design not flexible enough.

With the advancement of technology, today's electrical control technology has been able to meet the problem of dynamic speed drop response in high-speed rolling, so the high-speed rolling mill for wire rod with independent transmission is fully feasible in terms of control technology.

Contents of the invention

In view of this, the object of the present invention is to provide a single-drive rolling mill, which can simplify the equipment structure, improve the utilization rate of the roll ring and the flexibility of pass design while meeting the requirements of high-speed rolling of wire rods.

The independent drive rolling mill of the present invention includes a roll box, a gear box and a motor, one motor corresponds to one gear box, and the motor and the gear box are connected through a transmission device, one gear box corresponds to one roll box, and the connection between the gear box and the roll box are connected through gear transmission.

Further, the transmission device is a coupling.

Further, the gearbox includes an input shaft, a first output shaft and a second output shaft, the input shaft is connected to the motor through a coupling, the input shaft is provided with a first gear, and the first output shaft is provided with a second gear. a gear and a third gear, the second output shaft is provided with a fourth gear, the first gear meshes with the second gear, and the third gear meshes with the fourth gear;

The roll box includes a first roll shaft and a second roll shaft, the first roll shaft is provided with a fifth gear meshing with the third gear, and the second roll shaft is provided with a fifth gear meshing with the fourth gear. Six gears.

Further, the gearbox includes an input shaft, a first output shaft, a second output shaft and an intermediate shaft, the input shaft is connected to the motor through a coupling, the first gear is arranged on the input shaft, and the first gear is arranged on the first output shaft There are a second gear and a third gear, the second output shaft is provided with a fourth gear, and the intermediate shaft is provided with a seventh gear and an eighth gear;

The first gear meshes with the seventh gear, the eighth gear meshes with the second gear, and the third gear meshes with the fourth gear;

The roll box includes a first roll shaft and a second roll shaft, the first roll shaft is provided with a fifth gear meshing with the third gear, and the second roll shaft is provided with a fifth gear meshing with the fourth gear. Six gears.

Further, the second gear and the eighth gear are bevel gears.

Beneficial effects of the present invention:

1) The independent transmission rolling mill of the present invention, since each rolling mill is driven by a separate motor, the equipment structure is greatly simplified compared with the centralized transmission, and the equipment structure is simple and compact, which is more conducive to improving the stability of the high-speed operation of the equipment.

2) The independent drive rolling mill of the present invention, since each rolling mill is driven by a separate motor, when the roll collar of any rolling mill is worn out, the reduction in roll diameter caused by the wear of the roll collar can be compensated by fine-tuning the motor speed. Therefore, the utilization rate of the roller ring can be improved, and the number of spare parts of the roller ring can be reduced.

3) The independent drive rolling mill of the present invention, since each rolling mill is driven by a separate motor, there is no fixed reduction ratio between individual passes, making the pass design more flexible.

4) The independent drive rolling mill of the present invention, since each rolling mill is driven by a separate motor, the power of the motor is smaller, and at the same time, there are fewer spare parts, which can effectively reduce the cost of investment and production operation.

Description of drawings

Fig. 1 is a schematic diagram of the connection structure of the motor and the gear box in Embodiment 1 of the present invention;

Fig. 2 is a structural diagram of the roller box;

3 is a schematic diagram of the connection structure of the motor and the gear box in Embodiment 2 of the present invention;

Fig. 4 is a sectional view along A-A in Fig. 3;

Fig. 5 is the structural representation of the gearbox in embodiment three;

Fig. 6 is a sectional view along B-B among Fig. 5;

Fig. 7 is the overall structure schematic diagram of the separate drive rolling mill described in embodiment three;

Fig. 8 is a process drawing of the rolling mill of the present invention adopting a 45° layout of the top intersection.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Embodiment 1: As shown in Figure 1 , the present embodiment drives the rolling mill independently, including a roll box, a gear box and a motor 1, one motor 1 corresponds to a gear box, and the motor 1 and the gear box are connected through a transmission device 2, One gear box corresponds to one roller box, and the gear box and the roller box are connected through gear transmission.

In this embodiment, the transmission device 2 is a shaft coupling.

In this embodiment, the gearbox includes an input shaft 3, a first output shaft 4 and a second output shaft 5, the input shaft 3 is connected to the motor 1 through a coupling, and the input shaft 3 is provided with a first gear 6, so The first output shaft 4 is provided with a second gear 7 and a third gear 8, the second output shaft 5 is provided with a fourth gear 9, the first gear 6 meshes with the second gear 7, and the first The third gear 8 meshes with the fourth gear 9;

The roll box includes a first roll shaft 10 and a second roll shaft 11, the first roll shaft 10 is provided with a fifth gear 12 meshing with the third gear 8, and the second roll shaft 11 is provided with a fifth gear 12 meshing with the third gear 8. The fourth gear 9 meshes with the sixth gear 13 .

In this embodiment, the motor 1 transmits the power to the input shaft 3 through the coupling, the input shaft 3 transmits the power to the first output shaft 4 through the gear, and the first output shaft 4 transmits the power to the second output shaft 5 through the gear , while the first output shaft 4 transmits power to the first roll shaft 10 through gears, and the second output shaft 10 transmits power to the second roll shaft 11 through gears.

In this embodiment, the rolling mills are independently driven. Since each rolling mill adopts a separate motor 1 for transmission, the structure of the equipment is greatly simplified compared with the centralized transmission. The structure of the equipment is simple and compact, which is more conducive to improving the stability of the high-speed operation of the equipment; When the roller ring is worn, the reduction of the roller diameter caused by the wear of the roller ring can be compensated by fine-tuning the motor speed, so that the utilization rate of the roller ring can be improved and the number of spare parts of the roller ring can be reduced; The reduction ratio makes the pass design more flexible; at the same time, the motor power is smaller, which can effectively reduce the cost of investment and production operation.

Embodiment 2: As shown in Figure 3, the present embodiment drives the rolling mill independently, including a roll box, a gear box and a motor 1, one motor 1 corresponds to one gear box, and the motor 1 and the gear box are connected through a transmission device 2, one The gear box corresponds to a roller box, and the gear box and the roller box are connected through gear transmission.

In this embodiment, the transmission device 2 is a shaft coupling.

In this embodiment, the gearbox includes an input shaft 3, a first output shaft 4, a second output shaft 5 and an intermediate shaft 14, the input shaft 3 is connected to the motor 1 through a coupling, and the input shaft is provided with a first gear 6. The first output shaft 4 is provided with a second gear 7 and a third gear 8, the second output shaft 5 is provided with a fourth gear 9, and the intermediate shaft 14 is provided with a seventh gear 15 and eighth gear 16;

The first gear 6 meshes with the seventh gear 15, the eighth gear 16 meshes with the second gear 7, and the third gear 8 meshes with the fourth gear 9;

The roll box includes a first roll shaft 10 and a second roll shaft 11, the first roll shaft 11 is provided with a fifth gear 12 meshing with the third gear 8, and the second roll shaft 11 is provided with a fifth gear 12 meshing with the third gear 8. The fourth gear 9 meshes with the sixth gear 13 .

In this embodiment, the second gear 7 and the eighth gear 16 are spur gears.

This embodiment is an improvement to Embodiment 1. In this embodiment, an intermediate shaft 14 is added in the gearbox. The power of the input shaft 3 is transmitted to the first output shaft 4 after passing through the intermediate shaft 14. In this embodiment, the intermediate shaft 14 The speed-up effect can further increase the rolling speed.

Embodiment three, as shown in Figure 5, this embodiment is a further improvement to embodiment two, the difference between this embodiment and embodiment two is that the second gear 7 and the eighth gear 16 are bevel gears; and this embodiment The first output shaft 4, the second output shaft 5 and the intermediate shaft 14 are arranged staggered at 45°. This improvement can make the whole rolling mill in a state of horizontal arrangement, and realize the twist-free rolling at 45° at the top.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (5)

1. independent transmission milling train, comprise roller case, gear-box and motor, it is characterized in that: between the corresponding gear-box of motor and motor and gear-box, be in transmission connection by transmission device, by gear drive, connect between corresponding roller case of gear-box and gear-box and roller case.

2. independent transmission milling train according to claim 1, it is characterized in that: described transmission device is shaft coupling.

3. independent transmission milling train according to claim 2, it is characterized in that: described gear-box comprises power shaft, the first output shaft and the second output shaft, power shaft is connected with motor by shaft coupling, on power shaft, be provided with the first gear, on described the first output shaft, be provided with the second gear and the 3rd gear, on described the second output shaft, be provided with the 4th gear, described the first gear and the engagement of the second gear, described the 3rd gear and the engagement of the 4th gear;

Described roller case comprises the first roll mandrel and the second roll mandrel, on described the first roll mandrel, is provided with the 5th gear meshed with the 3rd gear, on described the second roll mandrel, is provided with the 6th gear with the 4th gear engagement.

4. independent transmission milling train according to claim 2, it is characterized in that: described gear-box comprises power shaft, the first output shaft, the second output shaft and jackshaft, power shaft is connected with motor by shaft coupling, on power shaft, be provided with the first gear, on described the first output shaft, be provided with the second gear and the 3rd gear, on described the second output shaft, be provided with the 4th gear, on described jackshaft, be provided with the 7th gear and octadentate wheel;

Described the first gear and the engagement of the 7th gear, described octadentate wheel and the engagement of the second gear, described the 3rd gear and the engagement of the 4th gear;

Described roller case comprises the first roll mandrel and the second roll mandrel, on described the first roll mandrel, is provided with the 5th gear meshed with the 3rd gear, on described the second roll mandrel, is provided with the 6th gear with the 4th gear engagement.

5. independent transmission milling train according to claim 2 is characterized in that: described the second gear and octadentate wheel are bevel gear.

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