WO2018171395A1 - Independently driven rolling mill and unit therefor - Google Patents

Abstract

Disclosed are an independently driven rolling mill and a unit therefor, the independently driven rolling mill comprising an electric motor (6), a gearbox (4), a bevel gear box (1-1, 1-2) and a roller box (2) arranged in succession, wherein one electric motor corresponds to one gearbox and is connected via a connecting shaft I (5), the gearbox and the bevel gear box are connected via a connecting shaft II (3), and one bevel gear box corresponds to one roller box and is connected via geared transmission. Using an independent electric motor drive, the equipment structure is much simpler than a centralised drive, the equipment structure is simple and compact and more convenient for increasing high speed operating stability of the equipment; by means of different rolling directions, the unit enables rolling mills to be arranged at the same side or alternately arranged on different sides, which can significantly save on space occupied by rolling mills in the width direction, enabling the whole structural layout to be more compact.

Description

Independent transmission mill and its unit Technical field

The invention belongs to the technical field of metallurgical devices and relates to a high speed cantilever rolling mill with independent transmission.

Background technique

In modern wire production, the method of increasing the speed of wire finishing is usually adopted to obtain higher output. At present, the final rolling guarantee speed of high-speed wire production can reach 110m/s or even higher. In order to achieve such a high rolling speed, a wire rod mill suitable for high-speed stable rolling is required. At present, a concentrated transmission wire finishing mill is generally used, and a product satisfying the size requirement is obtained by high-speed rolling of a finishing mill, and the wire is ensured. Yield. In the early days, the dynamic speed drop during the high-speed rolling of wire rods was difficult to solve at such a high speed. Therefore, the conventional wire rod finishing mill can only adopt the centralized transmission mode, that is, driving 8 to 10 wire rod finishing mills simultaneously by a large motor. It realizes 45° torsional rolling with over-crossing. The mechanical structure drives multiple sets of rolling mill gear sets through a gear differential box and two long shafts respectively, which solves the problem of dynamic speed drop of the rolling mill through mechanical interlocking and achieves stable production. .

Although mechanical linkage can be achieved with centralized transmission, there are still many problems:

1) The structure of the equipment is relatively complicated, the transmission chain is long, and the mechanical transmission dependence between the rolling mills is strong, especially the gear splitter box of the first stage. Once a certain part fails, the whole unit cannot be operated.

2) Because it is a concentrated transmission, when the roller ring of a certain rolling mill needs to be replaced, all the roller rings must be replaced at the same time to ensure smooth rolling.

3) Due to the fixed transmission ratio between the centralized transmission and each rolling mill, the hole design is not flexible enough.

4) Due to the centralized transmission, for the rolling of most specifications of the wire frame, the empty frame must also run at high speed, the no-load power consumption is high and the unnecessary wear of the empty frame is caused.

5) The existing rolling mill still has the problem that the arrangement structure is not compact, and it occupies the space of rolling and affects the arrangement of the rolling mill unit.

With the advancement of technology, today's electrical control technology has been able to meet the problem of dynamic speed drop during high-speed rolling of wire rods. Therefore, independent high-speed wire rod mills are fully feasible in control technology.

Summary of the invention

In view of this, it is an object of the present invention to provide an independent transmission mill and its unit.

In order to achieve the above object, the present invention provides the following technical solutions:

An independent transmission rolling mill comprises a motor, a gear box, a cone box and a roller box arranged in sequence, one motor corresponding to one gear box and connected by a shaft I, the gear box and the cone box are connected by a shaft II, one The cone box corresponds to a roller box and is connected by a gear transmission;

The gear box includes a gear A and a gear B that mesh with each other, and the gear A and the gear B are respectively disposed on an input shaft and an output shaft of the gear box;

The cone box includes a first cone shaft, a second cone shaft and a short shaft, one end of the first cone shaft is connected to the output shaft of the gear box through the shaft II, and the other end is passed through the bevel gear I and the second cone shaft The bevel gear II meshes with the transmission, and the second cone shaft is meshed with the gear D on the short shaft through the gear C; the cone is drivenly connected to the gear E and the gear F in the roller box through the gear C and the gear D, the gear E And the gear F are respectively disposed on the two roll shafts in the roll box.

Further, the shaft I and the shaft II are both couplings.

An independent transmission rolling mill unit comprising at least one pair of independent transmission rolling mills a and independent transmission rolling mills b according to claim 1 or 2, wherein the rolling directions of the independent transmission rolling mills a and the independent transmission rolling mills b are symmetrically set and rolled One side of the line.

An independent transmission rolling mill unit comprising at least one pair of the independent transmission rolling mill a and the independent transmission rolling mill b according to claim 1 or 2, wherein the independent transmission rolling mill a and the independent transmission rolling mill b have the same rolling direction, respectively Roll the sides of the line.

The beneficial effects of the invention are:

1) Since each rolling mill adopts an independent motor drive, 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 smoothness of the high-speed operation of the equipment.

2) Since each rolling mill adopts a separate motor drive, when the roll ring of any rolling mill wears, the roller diameter can be compensated for by the fine-tuning of the motor speed, thereby improving the utilization of the roller ring. , reduce the number of spare parts for the roller ring.

3) Since each rolling mill adopts a separate motor drive, there is no fixed reduction ratio between individual passes, and the hole design is more flexible.

4) Since each rolling mill adopts an independent motor drive, the empty mill can realize shutdown and no no-load power consumption, which can effectively reduce the cost of production operation.

5) The gear box and the roller box are connected by the connecting shaft, and the input shaft and the output shaft are longitudinally arranged, which can greatly save the space occupied by the rolling mill in the width direction, and the overall structure arrangement is more compact.

DRAWINGS

In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for explanation:

Figure 1 is a layout view of the independent transmission mill a of the present invention;

Figure 2 is a layout view of the independent transmission mill b of the present invention;

Figure 3 is a structural view of a roller box of an independent transmission mill of the present invention;

Figure 4 is a structural view of a cone box of the independent transmission mill a of the present invention;

Figure 5 is a structural view of a cone box of the independent transmission mill b of the present invention;

Figure 6 is a structural view showing a gear box of a first embodiment of the independent transmission mill of the present invention;

Figure 7 is a layout view showing a second embodiment of the independent transmission mill of the present invention;

Figure 8 is a structural layout view of the first embodiment of the independent transmission rolling mill of the present invention;

Figure 9 is a structural layout process diagram of a second embodiment of the independent transmission mill unit of the present invention.

detailed description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, the independent transmission rolling mill a1# comprises a cone box 1-1, a roller box 2, a shaft II3, a gear box 4, a shaft I5 and a motor 6, and the independent transmission mill b2# comprises a cone box 1-2 and a roller box 2 , the shaft II3, the gear box 4, the shaft I5 and the motor 6. The independent transmission mill a1# and the independent transmission mill b2# are independent motor drives, and Figures 1 and 2 show the arrangement of the first embodiment of the independent transmission mill of the present invention.

As shown in FIGS. 1 and 3, the cone case 1-1 includes a first tapered shaft and a second tapered shaft and a short shaft 11-3, the first tapered shaft is a long tapered shaft 11-1, and the second tapered shaft is a tapered shaft. 11-2, wherein the long tapered shaft 11-1 is provided with a bevel gear I111a, the bevel gear 11-2 is simultaneously provided with a bevel gear II112a and a gear C112b, and the short shaft 11-3 is provided with a gear D113a, wherein the long tapered shaft 11 The bevel gear I111a on the -1 meshes with the bevel gear II112a on the tapered shaft 11-2, and a transmission path of 45° from the horizontal direction is formed from the side of the rolling line, and the gear C112b on the tapered shaft 11-2 is short. The gear D113a on the shaft 11-3 is engaged.

As shown in FIG. 2 and FIG. 4, the cone case 1-2 includes a first tapered shaft and a second tapered shaft and a short shaft 12-3. The first tapered shaft is a short tapered shaft 12-1, and the second tapered shaft is a tapered shaft. 12-2 and the short axis 12-3, wherein the short tapered shaft 12-1 is provided with a bevel gear I121a, the bevel gear 12-2 is provided with a bevel gear II122a and a gear C122b, and the short shaft 12-3 is provided with a gear D123a The bevel gear I121a on the short tapered shaft 12-1 and the bevel gear II122a on the tapered shaft 12-2 mesh with each other, and form a transmission path of 45° from the horizontal direction from the other side of the rolling line, and the tapered shaft 12- The gear C122b on the second meshing meshes with the gear D123a on the short shaft 12-3.

The roller box 2 includes a roller shaft 2-1 and a roller shaft 2-2, and a gear E21a and a gear F22a are provided on the roller shaft 2-1 and the roller shaft 2-2, and gears on the roller box 2 for the cone box 1-1 E21a and F22a mesh with the gear D113a on the short shaft 11-3 and the gear C112b on the tapered shaft 11-2, respectively, in the cone 1-1, and the power transmission of the cone 1-1 and the roller box 2 is realized. For the cone case 1-2, the gears E21a and F22a on the roller box 2 mesh with the gear D122b on the short shaft 12-3 and the gear C123a on the cone shaft 12-2 in the cone case 1-2, respectively, to realize the cone box 1 -2 and power transmission of the roller box 2.

The gear box 4 includes an input shaft 4-1 and an output shaft 4-2. The gear A41a provided on the input shaft 4-1 and the gear B42a provided on the output shaft 4-2 mesh with each other to realize the transmission of input and output power. .

In the present invention, the motor 6 drives the input shaft 4-1 of the gear box 4 through the shaft I5, and the output shaft 4-2 of the gear box 4 drives the cone box 1-1 or 1-2 through the shaft shaft II3, and the cone box 1-1 Or 1-2 drives the roller shafts 2-1 and 2-2 of the roller box 2 through the gear C112b and the gear D113a or the gear C122b and the gear D123a, thereby forming an independently driven rolling mill and realizing the transmission of motor power. At the same time, by changing the number of gear teeth of the gear box 4 and the cone box 1-1 or the cone box 1-2, the speed ratio of each rolling mill is adjusted to meet the requirements of the rolling process for the pass mill speed ratio.

6 is an arrangement of a second embodiment of the independent transmission mill of the present invention, the gear box 4 is changed to the lower shaft input and the upper shaft output manner, and the arrangement height of the gear box 4 and the motor 6 can be reduced, and the gear is A platform plating is added to the upper portion of the box 4 and the motor 6, and the gear box 4 and the motor 6 are placed under the platform deck to improve the spatial arrangement of the rolling mill area.

FIG. 7 shows a first embodiment of an independent transmission rolling mill. In the present invention, the independent transmission rolling mill a1# and the independent transmission rolling mill b2# are alternately arranged in parallel, and the number of racks can be selected according to the needs of the rolling process, such as 2 racks. 3, 4, etc., each rolling mill is located on the same side of the rolling line, and achieve independent transmission of the rolling mill and 45 ° twistless rolling. This arrangement has a compact pitch, simple operation and maintenance, and quick replacement of the rolling mill.

Figure 2 shows a second embodiment of an independent drive mill unit. Optional independent transmission mill a1# and independent transmission mill b2#, each rolling mill adopts the parallel arrangement of the two sides of the rolling line, which can increase the center distance of the two motors on the same side to meet the requirements of large motors. Space layout.

It is to be understood that the above-described preferred embodiments are only illustrative of the technical solutions of the present invention, and are not intended to be limiting, although the present invention has been described in detail by the foregoing preferred embodiments, those skilled in the art Various changes are made in the details without departing from the scope of the invention as defined by the appended claims.

Claims (4)

An independent transmission rolling mill, comprising: a motor, a gear box, a cone box and a roller box arranged in sequence; one motor corresponds to one gear box and is connected by a shaft I, and the gear box and the cone box pass through the shaft II connection, a cone box corresponding to a roller box and connected by gear transmission; The gear box includes a gear A and a gear B that mesh with each other, and the gear A and the gear B are respectively disposed on an input shaft and an output shaft of the gear box; The cone box includes a first cone shaft, a second cone shaft and a short shaft, one end of the first cone shaft is connected to the output shaft of the gear box through the shaft II, and the other end is passed through the bevel gear I and the second cone shaft The bevel gear II meshes with the transmission, and the second cone shaft is meshed with the gear D on the short shaft through the gear C; the cone is drivenly connected to the gear E and the gear F in the roller box through the gear C and the gear D, the gear E And the gear F are respectively disposed on the two roll shafts in the roll box. The independent transmission mill according to claim 1, wherein said shaft I and said shaft II are both couplings. An independent transmission rolling mill set characterized in that it comprises at least one pair of independent transmission rolling mill a and independent transmission rolling mill b according to claim 1 or 2, said rolling direction of said independent transmission rolling mill a and independent transmission rolling mill b being symmetrical , set on one side of the rolling line. An independent transmission rolling mill set characterized in that it comprises at least one pair of independent transmission mill a and independent transmission mill b according to claim 1 or 2, said independent transmission mill a and independent transmission mill b having the same rolling direction , set on both sides of the rolling line.

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