JPS6233011B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to hot rolling equipment for steel strip, and more particularly to a mandrel exchange device for a down coiler.

Conventionally, in this type of mandrel replacement work, crane work is extremely restricted due to the structure of the down coiler. For this reason, the work of removing attached equipment, crane work, mandrel removal and rehanging of ropes during assembly work, etc., are extremely difficult and time consuming, and are inefficient.

The purpose of the present invention is to enable efficient mandrel replacement work without the need for removing equipment above the mandrel or crane work, and to utilize a coil car provided as hot rolling equipment for mandrel replacement work. It is an object of the present invention to provide a mandrel changing device for a down coiler that has excellent equipment efficiency.

The above-mentioned object of the present invention is to locate a down coiler in a hot rolling equipment for strip steel on which a mandrel is attached, and to move the mandrel along the axial direction of the mandrel from the attachment position of the mandrel to the down coiler to the mandrel replacement position. It has a rail laid over an area extending over an area of and an alignment device that lifts and lowers the mandrel support that supports the mandrel on the truck to adjust the axial position of the mandrel with respect to the down coiler, and is further installed below the down coiler and on the rail for the truck. The existing coil car that runs on the coil car running rail located at the bottom and laid along the direction of the rail arrangement has a structure in which the bogie and the coil car are moved vertically so that the bogie and the coil car can run together. A configuration is adopted in which an engaging device to be connected and a lifting device for raising and lowering the engaging device are installed, and a coil car driving device for moving and operating the coil car along the traveling rail is installed in the coil car. This is achieved by

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

FIGS. 1 and 2 are diagrams showing an embodiment of a mandrel changing device for a down coiler according to the present invention.

A rail 16 is laid between the down coiler frame 12 and the upconder 14, and this rail 1
A replacement cart 20 for replacing the mandrel 18 runs on the mandrel 6. The replacement cart 20 includes a mandrel receiver 2 that rotates around a fulcrum 22.
4. A centering device 26 for centering the mandrel insertion drawer, a mandrel holding bambi 28 and a member 30 are placed at the position where the end of the mandrel receiver 24 is placed.
is installed. The member 30 is a lifter 36 installed on a coil car 34 running on a coil car rail 32 laid below the bogie 20.
It has a structure that engages with a hook 38 attached to the.

Another down coiler frame 40 is erected on the rail 16 side of the down coiler frame 12 so as to face it. Between these down coiler frames 12 and 40 is placed a mandrel 18 which has been unsecured by a mandrel drive 42 and is ready for replacement. Further, the coil car 34 is an upconder 1.
The vehicle is driven by a coil car cylinder 44 provided at the bottom of the vehicle.

FIG. 3 shows a front view of FIG. 1. A steel strip 46 coming from the mill side (not shown) passes between pinch rolls 48 and 50 and is guided by upper and lower guides 52 and 54 into the down coiler frames 12 and 40. This steel strip 46 is a wrapper roll 5
At step 6, it is wound onto a mandrel 18. This wrapper roll 56 is driven as necessary by levers, links, cylinders, etc., which are drive devices not shown, and is in the position shown in the figure when winding up, and swings as in the position when unloading the coil 58 of the steel strip 46. The down coiler frame 12, 40 has a structure that allows it to be installed within the down coiler frame 12, 40.
Further, the upper guide 52 has a structure in which it swings as shown by an arrow in the figure by a cylinder device not shown in accordance with the winding of the steel strip 46 and the unloading of the coil 58, and is arranged between the down coiler frames 12 and 40. installed on. The table 60 is a steel band 46
It conveys the down coiler to the next down coiler frame (not shown), has a drive device, and is installed on the top surface of the down coiler frame.

Next, the operation of this embodiment will be explained. The bogie 20 and the coil car 3 are connected to each other via a hook 38 attached to a lifter 36 installed on the coil car 34.
4 are connected. In this way, when the coil car cylinder 44 is operated to make the coil car 34 run, the bogie 20 also runs, and this bogie 2
0 to a predetermined position on the lower surface of the mandrel 18 inside the down coiler. The mandrel 18, whose fixed part has already been removed by the mandrel drive device 42 and is ready for replacement, is moved to the centering device 26 in the cart 20.
The mandrel 18 is fixed by the mandrel receiver 24 with the receiving band 28. 4 and 5 are views showing in detail how the band 28 is attached, and the band 28 is attached to the mandrel receiver 24 with a metal fitting 62 and a nut 64 so that it can be easily attached and detached.

Next, the mandrel 18 fixed to the truck 20 is pulled out of the down coiler frame 40 by the coil car cylinder 44 into a state as shown by the two-dot chain line in FIG. Thereafter, the fixation of the band 28 is removed and the mandrel 18 is transported by a crane.

When assembling work is to be carried out, the mandrel 18 is carried by a crane to the position indicated by the two-dot chain line in FIG. After that, the mandrel 18 is
While adjusting the height of the coil car cylinder 4 and the mandrel drive device 42, the coil car cylinder 4 is adjusted as described above.
Insert it into the down coiler while running it at step 4.

According to this embodiment, since the mandrel 18 in the down coiler is replaced without using a crane using the trolley 20 that engages with the coil car 34 and runs at the same time, the equipment on the upper surface of the mandrel 18, that is, the table 60 upper guide 52 Also, the mandrel 18 can be replaced efficiently and in a short time without having to remove the drive shaft, wiring, piping, etc. attached thereto. Moreover, the device of this embodiment has the upconder 14 or coil car 3 necessary for equipment operation.
4, it has the advantage of being relatively inexpensive to manufacture.

As is clear from the above description, according to the present invention, the mandrel can be replaced by a cart running under the mandrel, which eliminates the need for removing equipment above the mandrel and for crane work. It is possible to provide a mandrel changing device for a down coiler which has excellent facility efficiency in that the changing work can be performed and a coil car provided as hot rolling equipment can also be used for the mandrel changing work.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of a down coiler mandrel changing device according to the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a front view of FIG. 1, and FIG.
The figure is a detailed front view showing the band attachment state of this embodiment, and FIG. 5 is a side view of FIG. 4. 12,40...Down coiler frame, 16
... Rail, 20 ... Cart, 24 ... Mandrel receiver, 26 ... Alignment device, 28 ... Band, 30 ...
...One member, 34...Coil car, 36...Lifter, 38...Hook, 46...Strip steel.

Claims (1)

[Claims] 1 Located at the lower part of the down coiler to which the mandrel of hot rolling equipment for strip steel is attached, and extending along the axial direction of this mandrel from the attachment position of the mandrel to the down coiler to the mandrel replacement position. It has a rail laid down and a truck that runs on the rail, and on the truck there is a mandrel receiver for receiving a replacement mandrel, a fixing device for fixing the mandrel on the truck, and a mandrel receiver on the truck. An alignment device is installed for raising and lowering the mandrel support supporting the mandrel to adjust the axial center position of the mandrel with respect to the down coiler. An existing coil car that runs on a running rail for coil cars that is laid along the rail arrangement direction is equipped with an engagement device that connects the bogie and the coil car in the vertical direction so that the bogie and the coil car can run together. A mandrel exchange for a down coiler, characterized in that a lifting device for lifting and lowering the engagement device is installed, and a coil car driving device for moving and operating the coil car along the traveling rail is installed in the coil car. Device.