JP3051695B2 - Mill housing exchange device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mill housing changing device. More specifically, the present invention relates to a mill housing exchanging device for exchanging a housing of a mill stand in a rolling line which is a facility for roll rolling bar steel or the like.

[0002]

2. Description of the Related Art A rolling line (H) has a horizontal housing (H housing) for supporting a pair of horizontal rolls.
A plurality of stands (stands) and rolling mills (V stands) each having a vertical housing (V housing) that supports a pair of vertical rolls are arranged one by one or a plurality of sets. Many hydraulic and pneumatic devices such as hydraulic cylinders and air cylinders are used in each rolling mill, and piping for supplying hydraulic and pneumatic pressure to them is connected to ground equipment such as hydraulic pumps and rolling mills. It is provided between. In addition, many piping and wiring facilities are connected between the ground facilities and the rolling mill to supply lubricating oil to bearings supporting the rolls, supply electricity to electrical equipment such as load cells and motors, and circulate cooling water. It is located between them.

[0003]

In such a rolling mill, when the rolls are worn or when the roll size is changed, the rolls need to be changed. When performing a roll change, the entire line must be stopped, so it is preferable that the time for the roll change be reduced as much as possible.Therefore, the housing in which the rolls are assembled is configured to be separable from the rolling mill body, Replacement of the entire housing has been performed. At that time, many pipes and wirings provided between the rolling mill and the ground equipment need to be detached and attached each time, which is extremely troublesome. In addition, an automatic desorption device that allows one-touch connection and disconnection of piping and wiring is also known, but it is expensive and requires much time and effort for maintenance, such as measures against oil leakage at the connection and cleaning of dust. There is.

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention makes it possible to easily and quickly replace an old housing on a rolling line with a spare new housing, and to replace a mill housing which requires almost no maintenance of piping and wiring joints. It is intended to provide a device.

[0005]

SUMMARY OF THE INVENTION A mill housing replacement device according to the present invention is a replacement device for replacing a housing of a mill stand in a rolling line, wherein at least two housings of an old housing and a new housing are mounted. It can reciprocate between a recovery position where it runs on a rail provided parallel to the rolling line and picks up the old housing on the rolling line, and a discharging position where the mounted housing is discharged onto the line. And a transfer means for transferring each of the housings between a bogie at a fixed position on the rolling line, and a bogie at a collection position or a payout position. The upper movable piping / wiring set that follows the moving operation when moved between the mounting positions of the two housings and the bogie. When the bogie is moved between the collection position and the dispensing position, the lower movable piping / wiring set that follows the moving operation is installed outside the bogie and the rolling line. It is characterized in that it is respectively bridged between an operation control panel installed in association with the housing of the stand.

In the present invention, the operation control panel is a concept including a valve stand for collecting control valves such as hydraulic piping, pneumatic piping, and cooling water piping, and a control panel for electric wiring.

In the above invention, a support post is provided on the carriage, and an upper movable piping / wiring set is provided between an upper portion of each housing and an upper end of the support post. It is preferable that an upper link type cable support for supporting the cable is stretched, and the cable is supported by an upper link.
It is preferable that a lower link type cable support for supporting a lower movable piping / wiring set is stretched between a lower portion of the bogie and an operation control panel installed outside the rolling line as in the invention.

[0008] In the first aspect of the present invention, the replacement of the mill housing is performed as follows. First, the trolley is located at the collection position, and the old housing at a fixed position on the rolling line is transferred onto the trolley by the transfer means. Then, the truck is moved to the payout position, and the new spare housing on the truck is transferred to a fixed position on the rolling line by the transfer means. Thus, the replacement of the old and new housings is completed. During the transfer of the old and new housings between the trolley and the rolling line, since all the housings are connected by the upper movable piping and wiring set that follows the transfer operation, there is no need to remove and attach piping and wiring. Further, even during the movement of the cart between the collection position and the dispensing position, the truck is connected by the lower movable piping and wiring set that follows the moving operation, so that it is not necessary to remove and attach the piping and wiring. Therefore, the replacement of the mill housing can be performed extremely easily and in a short time. In addition, since it is protected from dust, no special maintenance is required.

Further, according to the second and third aspects of the present invention, when the upper and lower movable piping / wiring sets are supported by the upper and lower link type cable supports,
Followability is guaranteed, and no accidents can be prevented because there is no damage or entanglement.

[0010]

Next, a description will be given of a mill housing replacement device according to an embodiment of the present invention.

FIG. 1 is a schematic perspective view of a mill housing replacement device according to the present embodiment. Reference numerals 1 and 2 denote an old vertical housing (hereinafter, also referred to as an old housing) and an old horizontal housing alternately installed at fixed positions on a rolling line. A housing (hereinafter, also referred to as an old housing). The trolley 3 runs on a rail (not shown) laid in parallel with the rolling line, and can move between a collection position (shown by a solid line) and a payout position (shown by an imaginary line). I have. In addition, the truck 3 can mount the old housings 1 and 2 and the new vertical / horizontal housings 1A and 2A (hereinafter also referred to as new housings). Also provided is a rail 4 for transferring to and from a fixed position above. Further, on the side of the rolling line, the new and old housings 1, 1A, 2 and 2A are extruded from the rolling line PL onto the bogie 3 and transferred, or are taken from the bogie 3 onto the rolling line L and transferred. For example, a hydraulic cylinder or the like (not shown) constituting transfer means is provided.

Then, the support posts 6, 7,
8 and 9 are installed, and a first link type cable support 11 is provided between the support post 6 and the old vertical housing 1 on the rolling line.
A second link type cable support 12 is stretched between the support post 7 and the spare new vertical housing 1A on the trolley 3, so that the support post 8 and the old horizontal housing 2 on the rolling line are connected. A third link type cable support 13 is stretched between the support post 9 and a spare new horizontal housing on the carriage 3.
A fourth link type cable support 14 is stretched between the cable support 2A and the second link type cable support 2A. Each of the link type cable supports 11 to 14 is formed by pin-jointing a large number of U-shaped links, and has a characteristic that it can bend in one direction but cannot be bent in the other direction. Type cable support 11 ~
Both are folded back in a U-shape and connected. And
Inside the link type cable supports 11 to 14, hoses for supplying and discharging hydraulic oil and air for hydraulic and pneumatic equipment, hoses for supplying and discharging cooling water, electric wires for controlling electric equipment, etc. are stored. ing. All of these hoses and electric wires have flexibility, and the upper movable pipe /
Applicable to wiring set. The first to fourth link type cable supports 11 to 14 correspond to the upper link type cable support described in the claims.

A fifth link type cable support 15, a sixth link type cable support 16 (not shown), a seventh link type cable support 17, and an eighth link type cable support 18 are provided on the lower surface of the carriage 3. (Not shown) are connected.
These fifth to eighth link type cable supports 15 to 18 correspond to lower link type cable supports described in the claims, and these link type cable supports 15 to 18 correspond to the upper link type cable supports. It is the same as 11 to 14, and similarly houses hoses and electric wires. These hoses and electric wires also have flexibility and correspond to the lower movable piping / wiring set described in the claims. In addition,
In the drawings after FIG. 1, reference symbol L indicates a pass line.

Next, a specific configuration of each unit will be described.
FIG. 2 shows a carriage 3 and two old and new vertical housings 1, 1A mounted on the upper surface thereof and two old and new horizontal housings 2, 2A. The cart 3 has a frame 31 and wheels 32 and runs on a running rail 33 laid in parallel with the rolling line. A hydraulic cylinder 34 for driving the carriage 3 is connected to the lower surface of the carriage 3. By extending and contracting the hydraulic cylinder 34, the hydraulic cylinder 34 reciprocates between a collection position indicated by a solid line and a dispensing position indicated by an imaginary line. It works.
As shown in FIGS. 2 to 4, fifth to eighth link type cable supports 15 to 18 are connected to the lower surface of the frame 31 of the carriage 3. Further, four sets of transfer rails 4 for housing transfer are provided on the frame 31 of the trolley 3, and two sets of transfer rails 4 for the old and new vertical housings 1 and 1A are high brackets. The two sets of transfer rails 4 for the old and new horizontal housings 2 and 2A are mounted on a low-height bracket 36. And the frame of the trolley 3
The four support posts 6, 7, 8, 9 are erected on the base 31, and the first to first posts connected to the respective support posts 6, 7, 8, 9 are provided.
The four-link type cable supports 11, 12, 13, 14 are folded back into a U-shape, and the terminal is connected to each housing 1, 1A, 2, 2A.
Is connected to a suitable place on the upper surface.

As shown in FIG. 3, the old and new vertical housings 1 and 1A have wheels 21 on the lower surface of the housing and are adapted to move on the rails 4 of the carriage 3, and as shown in FIG. The old and new horizontal housings 2 and 2A have wheels 22 on the lower surface of the housing, and move on the rails 4 of the truck 3.

An upper movable piping / wiring set in the first to fourth link type cable supports 11 to 14 via fixed piping / wiring in the frame 31 of the carriage 3 and in the support posts 6 to 9, The lower movable piping and wiring sets in the fifth to eighth link type cable supports 15 to 18 are connected to each other.

Each of the housings 1, 1A, 2, 2A is provided with an operation control panel 10, 10A, 20, 20A individually. Fig. 5 shows each housing 1, 1A, 2, 2A and operation control panel
10A, 10A, 20 and 20A are shown, and an operation side control panel 10 is provided for the old vertical housing 1,
The operation control panel 10 includes a valve stand 23 and a control panel 24. Then, the hydraulic and pneumatic device in the old vertical housing 1 and the valve stand 23 are connected by hoses and the like in the first and fifth link type cable supports 11, 15, and the electric device and the control panel 24 are connected to the first and the first. They are connected by electric wires and the like in the 5-link cable supports 11 and 15. Similarly, a spare new vertical housing 1A is provided with an operation control panel 10A,
They are connected by hoses and electric wires in the link type cable supports 12, 16. Old horizontal housing 2 and operation control panel 20
Similarly, the new horizontal housing 2A and the operation control panel 20A are similarly connected by the hoses and electric wires in the third and seventh link type cable supports 13 and 17, and the fourth and eighth link type cable supports 14 are also connected. , 18 are connected by hoses and wires.

Next, the replacement operation of the mill housing will be described with reference to FIGS. FIG. 9A shows a state before the replacement of the housings. The old housings 1 and 2 are located at fixed positions on the rolling line, and the spare new housings 1A and 2A are loaded on the carriage 3. The cart 3 is at the collection position. The old vertical housing 1 and the old horizontal housing 2 to be replaced, indicated by solid lines in FIGS. 7 and 8, are also in this state. Here, the transfer means is driven to transfer the old housings 1 and 2 in the direction of the arrow a and collect them on the carriage 3. The recovered state is shown in FIG. 9 (b), which is shown by imaginary lines in FIGS. Next, as shown in FIG. 9C, the carriage 3 is moved in the direction of arrow c to bring it to the payout position. Here, the spare new housings 1A and 2A are transferred in the direction of the arrow b and paid out on the rolling line. This completes the replacement of the housing, and this state is shown in FIG. 9 (d).

In the above replacement work, the old housings 1 and 2 and the spare new housings 1A and 2A
And a fixed position on the rolling line, and the upper movable piping / wiring set therebetween is guided and followed by the above-described first to fourth link-type cable supports 11 to 14, and the new and old housings 1 , 1A, 2, 2A. During the reciprocating operation of the truck 3, the lower movable piping / wiring set between the truck 3 and the operation control panels 10, 10A, 20, 20A, which are ground equipment, is connected to the fifth to eighth link type cable supports 15 to 18. , And does not hinder the movement of the carriage 3.

That is, the old housings 1, 2 and the spare new housings 1A, 2A are still connected to the valve stand 23 and the control panel 24, respectively, as shown in FIG. After the fixing, the rolling line can be operated immediately. Therefore, the idle time for replacement can be significantly reduced. The old housing 1 left on the trolley 3
When carrying 2 to another place by a crane or the like, for example, a repair shop or a warehouse, the upper movable piping / wiring set between the old vertical housings 1 and 2 and the bogie 3 is individually removed. Does not affect line downtime.

Although the embodiment of the mill housing replacement apparatus of the present invention has been described above, the present invention is not limited to this embodiment, and various modifications can be made. For example, in the above-described embodiment, the link-type cable supports are stretched between the housing and the trolley and between the trolley and the ground equipment. However, depending on the movement stroke of the housing or the trolley or the type and number of the pipes / wirings. Alternatively, the use of a link type cable support may be omitted. As shown in FIG. 6, a normal valve stand and a spare valve stand are shared, and a directional control valve 43 and a changeover switch are provided.
It is possible to make it common by making it switch with 44 etc. Further, the carriage 3 can load four new and old housings, but it is sufficient that at least two housings can be loaded. In this case, the size of the carriage can be reduced. However, conversely, the truck became larger,
More housings may be replaced at once.

[0022]

According to the mill housing replacement device of the first aspect of the present invention, there is no need to remove and attach the pipe and wiring set between the housing and the ground equipment each time, so that the replacement operation can be performed easily and in a short time. . In addition, the connection portion of the piping / wiring set can be protected from dust and does not leak, so that maintenance is easy.

Furthermore, according to the second and third aspects of the present invention, the link-type cable support can prevent entanglement and damage of cables and hoses, thereby preventing unexpected accidents.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an exchange device of the present invention.

FIG. 2 is a side view of the switching device according to one embodiment of the present invention.

FIG. 3 is a sectional view taken along line III of FIG. 2;

FIG. 4 is a sectional view taken along line IV in FIG. 2;

FIG. 5 is a piping and wiring system diagram of the exchange device according to the present invention.

FIG. 6 is a piping and wiring system diagram according to another embodiment of the present invention.

FIG. 7 is a front view showing a state before and after replacement of the vertical housing 1. FIG.

8 is a front view showing a state before and after replacement of the horizontal housing 2. FIG.

FIG. 9 is an explanatory view showing a procedure of a housing replacement operation in the present invention.

[Explanation of symbols]

 1 Old vertical housing 2 Old horizontal housing 1A Spare new vertical housing 2A Spare new horizontal housing 3 Bogie 6-9 Support column 10,10A Operation control panel 11-14 Upper link type cable support 15-18 Lower link type cable support Tool 20,20A Operation control panel

Continuation of the front page (56) References JP-A-10-296308 (JP, A) JP-A-6-226313 (JP, A) JP-A-10-263633 (JP, A) JP-A-59-87908 (JP) JP-A-61-216809 (JP, A) JP-A-59-58520 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21B 31/08 B21B 31/02

Claims (3)

(57) [Claims] An exchange device for exchanging a housing of a mill stand in a rolling line, wherein at least two housings of an old housing and a new housing can be mounted, and a rail provided in parallel with the rolling line. A carriage that reciprocates between a recovery position where the old housing on the rolling line is picked up by running on the rolling line, and a dispensing position where the new housing mounted is discharged on the line, and a fixed position on the rolling line, Transfer means for transferring each of the housings between the carriage at the collection position or the dispensing position,
When the housing is moved between a fixed position on a rolling line and a mounting position on a trolley, an upper movable piping / wiring set that follows the moving operation is provided between each of the two housings and the trolley. When the bogie is moved between the collection position and the dispensing position, the lower movable piping / wiring set that follows the moving operation is installed outside the bogie and the rolling line. A mill housing exchanging device, wherein the mill housing exchanging device is bridged between an operation control panel installed in association with a base housing. 2. A support post is provided on the carriage,
2. The mill housing replacement device according to claim 1, wherein an upper link type cable support for supporting the upper movable piping / wiring set is stretched between an upper portion of each housing and an upper end of the support post. 3. A lower link type cable support for supporting said lower movable piping / wiring set is stretched between a lower portion of said bogie and an operation control panel installed outside of a rolling line. The described mill housing replacement device.