JPH03184606A - Cantilever vertical rolling mill - Google Patents

Abstract

PURPOSE:To easily convert an existing H-H mill to an H-V mill, to improve the rolling quality and to reduce the cost of equipment by adding an in- horizontal plane rotary gear mechanism for rotating a roll shaft by interlocking with an in-vertical plane rotary gear mechanism. CONSTITUTION:When universal spindles 7A, 7B are rotated by an H mill driving device 10, one spindle 7A becomes idle, but an in-vertical plane rotary gear mechanism P is operated by the other spindle 7B. By interlocking therewith, an in-horizontal plane rotary gear mechanism R operates, and torque is transferred to a roll shaft. Therefore, mill rolls 14A, 14B are rotated in the rolling direction while being supported with a cantilever by the roll shaft. Accordingly, by installing a V-mill housing 13 instead of an H-mill housing in a prescribed bed on an H-H continuous mill line, an H-H continuous mill can be converted to an H-V continuous mill.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a vertical rolling mill (hereinafter simply referred to as a V mill).
Regarding vertical rolling mills with rolls supported on one side, we particularly focus on vertical rolling mills that can be replaced (reinstalled) with horizontal rolling mills (hereinafter simply referred to as H mills) and used by sharing the drive device for the H mills. This relates to rolling mills.

[Conventional technology]

Conventionally, a rough rolling mill for rolling billets, etc. has multiple H
The H-H continuous mill, which is a combination of mills, and the H-V continuous mill (V, H combination mill), which is a combination of multiple H mills and three mills, are known.

The H-H continuous mill has the advantage of a simple line configuration and low equipment costs, but it requires the material coming out of the first stage mill to be turned by a turning device and fed into the second stage mill. In this method, it is necessary to twist the material coming out of the first stage mill before introducing it into the second stage mill, which has disadvantages such as deterioration of rolling efficiency or rolling quality.

The H-V continuous mill has the advantage of improving rolling quality because it does not require twisting the material before feeding it to the subsequent mill, unlike the H-H continuous mill, but the disadvantage is that the equipment cost is high. was there.

In this way, the H-H continuous mill and the F(-V continuous mill) have their advantages and disadvantages, and when changing (remodeling) an existing H-H continuous mill to an HV continuous mill, it is necessary to reinstall (recombine) the existing H-H continuous mill. Either dig a foundation under the bed of the H S mill stand to create a space for installing the drive device (pinion stand) of the H S mill stand, or set up a frame on the side of the H mill stand. It has been considered to install a drive device (pinion stand) for the vehicle on this frame (the former).

In addition, as shown in Fig. 8 and Fig. 9, the mill roll and hipinion stand are assembled into the housings H and H', and the HG le stand is replaced with this housing at once.
It has also been considered that the drive device and bed can be shared by changing the installation from V mill stand or V Q le stand to H mill stand (the latter).

[Problem to be solved by the invention]

In both the former and latter cases, the entire equipment is expensive (even the mill stand in the latter case requires a very large housing), and the installation of the mill stand requires digging of the foundation and installation of a large and sturdy frame. The disadvantages were that the equipment costs were high, and the downtime for changing (remodeling) the cruise line was long.

[Purpose of the invention]

This invention was made to solve the above-mentioned problems, and allows a predetermined H mill in an existing H-H continuous mill to be replaced with a V mill in a short time, and also includes two universal spindles for driving the mill. The purpose of this invention is to shorten the construction period and significantly reduce equipment costs by making it possible to share the drive device for the H mill.

[Means to solve the problem]

As shown in the drawing, the cantilever vertical rolling mill according to the present invention has a pair of vertical mill rolls 14A and 14B that are opposed to each other and are rotatably supported by roll shafts 17A and 17B that extend downward from these rolls. It is a cantilever vertical rolling mill, and a horizontal shaft 21A is arranged at a side position of the mill rolls 14A and 14B, and a vertical plane rotating gear mechanism P attached to the horizontal axis 21A, and this vertical plane rotating gear mechanism P are provided. A rotating gear mechanism R in a horizontal plane that rotates the roll shafts 17A, 17B in conjunction with each other is provided in the housing 13 that supports the mill rolls 14A, 14B, and the end of the horizontal shaft 21A is connected to the H
It is characterized by being formed so that it can be engaged with and detached from the coupling half 93 of the universal spindle 7A (or 7B) connected to the drive device 10 for the mill, and this configuration achieves the above object.

[For production]

After the Vξ mill housing 13 is installed on the bed 3 where the H mill was installed using a crane, the coupling half 93 of the universal spindle 7A (or 7B) is extended to the outside of the mill housing 13. The horizontal shaft 21A is advanced toward the end of the existing horizontal shaft 21A and engaged with the end. In this state, when the universal spindles 7A and 7B are rotated by the H mill drive device 10, one universal spindle 7A becomes idle, but the vertical in-plane rotating gear mechanism P is operated by the other universal spindle 7B, In conjunction with this, the rotation gear mechanism R in the horizontal plane operates, and torque is transmitted to the roll shafts 17A and 17B. For this reason, the mill rolls 14A, 14B are rotated in the rolling direction while being cantilevered by the roll shafts 17A, 1.7B.

Therefore, in a given bed 3 on the H-H continuous mill line,
By installing the housing 13 for the V mill in place of the housing 1 for the H wheel, it becomes possible to change from the H-H continuous mill to the H-2 continuous mill.

〔Example] An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 4, reference numeral 1 designates a housing for an H mill provided with a pair of opposing upper and lower rolls 2A and 2B. 3 is a pair of fixed frames 31.3 facing each other in the pass line direction.
The bed consists of □ and is placed on the HH continuous line. The housing 1 for the H mill can be moved along the rail 5 by the housing exchange cylinder 4 and transferred to the bed 3 or onto the shift car 6 as shown in the figure. It can be installed by straddling the □ and supporting it.

7A and 7B are universal spindles, spindle 8
and a coupling half 93 attached to both ends of the spindle 8 via a universal joint 90.9□. The spindle 8 itself is expandable and retractable by a spline mechanism or the like.

Coupling half on the drive side9. is attached to the output shaft of the drive device IO. Further, the coupling half 93 on the pass line side is supported by the spindle carrier 11, and is attached to and detached from the roll shaft on which the horizontal rolls 2A and 2B are attached by movement of the spindle carrier 11 by the caliber shift cylinder 12 (extension and contraction of the spindle 8). It is possible.

13 is a pair of vertical mill rolls 14A, 1 on the left and right facing each other.
This is a housing for a V mill equipped with 4B, and is composed of a gear box 15 and a support frame 16. As shown in the figure, the gear box 15 is inserted between the fixed frames 31.3□, and the support frame 16 can be fixedly installed on the bed 3 by supporting the fixed frames 3+ and 3z across them.

17A and 17B are equipped with mill rolls 14A and 14B fFL
J: A roll shaft that extends downward from the mill rolls 14A and 14B, and bearings 18a and 18b at this extended portion.
It is rotatably attached to the support frame 16 and the V-mill housing 13 via the support frame 16 and the V-mill housing 13, respectively.

19A, 19B, 19C, 19D, 19E are vertical shafts parallel to the roll shafts 17A, 17B, and bearings 20a, 2
(1) They are each rotatably attached to the mill housing 13 via 0b.

2LA and 21B are horizontal shafts perpendicular to the roll shafts 17A and 17B, which are rotatably attached to the V-mill housing 13 via bearings 22a and 22b, respectively, and are attached to the side positions of the mill rolls 14A and 14B (drive device 10 side).

Numerals 23 and 24 are gears for speed change (in the embodiment, for speed increase) that mesh with each other, and are mounted on the horizontal shafts 21A and 21B, respectively, and these gears 23 and 24 constitute a vertical in-plane rotary gear mechanism P for speed change. ing.

25 and 26 are interlocking gears, and the horizontal axis 21
B and vertical shaft 19E, and these bevel gears 25 and 26 constitute an interlocking bevel gear mechanism Q.

A gear 24 and a bevel gear 2 are mounted on the same horizontal shaft 21B.
5 is attached, and the vertical in-plane rotating gear mechanism P and the bevel gear mechanism Q are connected.

27, 28, 28, 29, 30, 31, 32, and 33 are gears that mesh with each other, respectively, gears 27.28 are connected to the vertical axes 19E and 19D, respectively, and gears 29.30 are connected to the same vertical axis 1.
9C, gears 31, 32 are mounted on the same vertical shaft 19B, gear 33 is mounted on the vertical shaft 19A, and the roll shaft 17
A and 17B have gears 3 that mesh with gears 32 and 33, respectively.
4A and 34B are installed, and these gears 27 to 33
．． 34A and 34B constitute a rotating gear mechanism R in a horizontal plane. Then, a hevel gear 26 is attached to the same vertical shaft 19E.
and a gear 27 are attached, and the bevel gear mechanism Q and the rotation gear mechanism R in the horizontal plane are connected.

The end of the horizontal shaft 21A, which is the driving shaft in the vertical in-plane rotary gear mechanism P for speed change, extends outside the mill housing 13 and is connected to the universal spindle 7A or 7B (7B in the embodiment) is formed so as to be able to engage and detach from the compling half 93.

21A' is a fixed shaft to which the coupling half 93 on the universal spindle 7A side is fitted, and is connected to the horizontal shaft 2LA.
It protrudes from the gear box 15 in the same direction as the gear box 15.

In the above configuration, as shown in FIG. 1, the H mill housing 1 is moved along the rail 5 and transferred onto the shift car 6 by the Rondo retraction operation of the housing exchange cylinder 4, and the bed 3 is made vacant.

Next, the VSR housing 13 is lifted by a crane or the like, the gear box 15 is inserted between the fixed frames 31.3□, and the support frame 16 is inserted between the fixed frames 3I, 3.
□ is supported across these ■ Mill housing 13
is fixedly installed on the head 3. Thereafter, the spindle carrier 11 is moved by the operation of the caliber shift cylinder 12.
is moved forward together with the coupling half 93 toward the end of the horizontal shaft 21A, which is the driving shaft of the transmission vertical in-plane rotary gear mechanism P extending outside the mill housing 13, and the cup is attached to this end. Ring halves 93 are engaged.

In this state, when the universal spindles 7A and 7B are rotated by the drive device 10, the negative universal spindle 7A becomes idle, but the gears 23 and 24 to which the other universal spindle 7B is connected do not rotate. (operation of vertical in-plane rotary gear mechanism P for speed change), and rotation of hevel gear 25 mounted coaxially with this gear 24 rotates hevel gear 26 (operation of hevel gear mechanism Q for interlocking).
operation), gear 2 mounted coaxially with this bevel gear 26
7 rotates gears 28 and 29, and this gear 2
The gear 31 is rotated by the rotation of the gear 30 mounted coaxially with the gear 3, and the gear 33 is rotated by the rotation of the gear 32 mounted coaxially with this gear 3, and the rotation of these gears 32, 33 rotates the roll shaft 17A, 17B is rotated (operation of horizontal rotation gear mechanism R).

In this way, the H mill drive device 10 moves the mill housing 13 through one universal spindle 7B.
The vertical plane rotary gear mechanism P for shifting, the interlocking bevel gear mechanism Q, and the horizontal plane rotary gear mechanism R provided therein are sequentially operated to transmit torque to the roll shafts 17A and 17B.
The mill rolls 14A, 14B are rotated in the rolling direction while being supported in a cantilever manner by the roll shafts 17A, 17B.

In addition, although we have explained the case where the predetermined H-mill housing 1 in the H-H continuous mill is replaced with the V-mill housing 13 to change the H-H continuous mill to an H-V continuous mill, the procedure in reverse to the above , ■ξ Mill housing 13I] Instead of the mill housing l, ■) ■ The continuous mill can be easily returned to the original H-H continuous mill.

Incidentally, in the above embodiment, an example was explained in which the rotating gear mechanism P in the vertical plane and the rotating gear mechanism R in the horizontal plane are interlocked via the bevel gear mechanism Q, but as shown in FIGS. It is preferable that 25 and 26 form the vertical in-plane rotating gear mechanism P, since the configuration is further simplified. Furthermore, various means can be considered for fixing the Vξ mill housing 13 to the head 3, and the one shown in FIG. 6 is one example.
3□ are connected to a clamp cylinder 35 and a rond tip of the clamp cylinder 35, respectively, and the fixed frame 3
1.3 If a protruding lamp head 36 is provided between □ and the clamp cylinder 35 engages the clamp head 36 with the engagement recess 37 provided in the gear box 15 of the mill housing 13, the clamp head 36 can be fixed. Frame 3I
, 3□, the gear box 15 can be fixed smoothly and reliably after being inserted, which is preferable.

〔Effect of the invention〕

As described above, this invention allows one universal spindle of the H mill drive device to be connected to a gear box that cantileverly supports a pair of vertical mill rolls facing each other via the roll shaft by installing it on the H mill bed. Since we added a rotating gear mechanism in a vertical plane and a rotating gear mechanism in a horizontal plane that rotates the roll shaft in conjunction with this rotating gear mechanism in a vertical plane, the drive device, universal spindle and bed for the H mill can be shared. Existing H-H continuous mills can be easily changed to H-V continuous mills, improving rolling quality and significantly reducing equipment costs.The construction period required for the change is also short, preventing a drop in operating rates. . Further, it is easy to convert the HV continuous mill back to the HH continuous mill.

[Brief explanation of drawings]

Fig. 1 is a front view schematically showing an embodiment of the present invention, Fig. 2 is a front cross-sectional view showing the main parts of Fig. 1 in enlarged detail, and Fig. 3 is a - - - - - of Fig. 2. 4 is a plan view of FIG. 2, FIG. 5 is an enlarged front sectional view showing main parts of another embodiment of the invention in detail, and FIG. 6 is a sectional view of FIG. A left sectional view along the ■-■ line, Fig. 7 is a plan view of Fig. 5, Fig. 8,
Figure 9 shows a conventional example; Figure 8 is a front sectional view of a vertical rolling mill installed on the bed in the line; Figure 9 is a front sectional view of a horizontal rolling mill installed on the gutter into the line. It is a diagram. 1...Housing for H mill, 3...Bed, 31 3□...Fixed frame, 7A, 7
B...Universal spindle, 93...
... Coupling half, 10... Drive device,
(l...Spindle carrier, 12...
・Caliber shift cylinder, 13...V mill housing, 14A, 14B...mill roll,
15... Gear box, 16... Support frame, 17A, 17B... Roll shaft, 19A, 1
9B, 19C119D, 19E... Vertical axis, 2
LA, 21B...Horizontal axis, 25.26...
...Behergya, 23.24.27.28.29.30.31.32.3
3.34A, 34B...Gear, P...
Rotating gear mechanism in the vertical plane for shifting, Q...Bevel gear mechanism for interlocking, Shaku... Rotating gear mechanism in the horizontal plane. No.1 diagram

Claims (1)

[Claims] (1) A cantilever vertical rolling mill in which a pair of vertical mill rolls facing each other is rotatably supported by a roll shaft extending downward from these rolls, and a horizontal shaft is provided at a side position of the mill rolls. A rotating gear mechanism in a vertical plane that is arranged and attached to the horizontal shaft, and a rotating gear mechanism in a horizontal plane that rotates the roll shaft in conjunction with this rotating gear mechanism in a vertical plane are arranged in a housing that supports the mill roll. A cantilever vertical rolling mill, characterized in that the end of the horizontal shaft is configured to be removable from a coupling half of a universal spindle connected to a drive device for the H mill.