JPS60104674A - Part exchanger for rolling mill - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention allows each part in a rolling mill, such as a feed roller apron in a rough rolling mill, a work roll balance cylinder block, and a slipper metal for driving work rolls, to be easily and quickly replaced. The present invention relates to a parts replacement device for a rolling mill that can be used to replace parts of a rolling mill.

For example, parts such as feed row chevrons, work roll balance cylinder blocks, and slipper metal for driving work rolls in rough rolling mills are located in positions where they cannot be lifted using overhead cranes, so replacement work for these parts is difficult. Conventionally, chain hoists were generally used, and workers had to do it manually. Therefore, this replacement work had many problems, such as poor workability, extremely inefficiency, and great danger.

From the above-mentioned viewpoints, the present invention provides a parts replacement device for a rolling mill that can replace parts inside the rolling mill in a highly efficient, safe and quick manner. 701, etc.; a boom support mechanism provided on the trolley so as to be vertically movable and horizontally rotatable; a boom provided on the boom support mechanism so as to be horizontally reciprocatable and having an attachment for parts replacement at its tip; It is characterized by the fact that it becomes

Next, the apparatus of the present invention will be explained with reference to all the drawings.

FIG. 1 is a schematic longitudinal sectional view showing one embodiment of the device of the present invention. As shown in FIG. 1, a cart 2 that moves on rails 1, 1 provided on the base of a rolling mill includes a hydraulic motor 3, a vertical screw punch 4 rotated by the hydraulic motor 3, A ram 6 having a straight hole 5 into which a screw punch 4 is inserted, and a boom support mechanism 7 fixed to the upper end of the ram 6 are provided.

A gear 8 is attached to the lower end of the screw punch 4.
is meshed with a gear 10 fixed to the output shaft 3A of the hydraulic motor 3 via an intermediate gear 9.

The ram 6 is supported via bearings 12 and 13 in a non-circular cylindrical body 11 whose outside is square, for example, and a nut 1 screwed into the screw punch 4 is attached to the lower end of the cylindrical body 11.
4 is fixed.

The cylindrical body 11 has vertical ribs 2A erected on the trolley 2.
, 2A, and is inserted so as to be movable only in the vertical direction.

On the boom support mechanism 7, there is one horizontal guide roller 16 at the top and two horizontal guide rollers 17, 1 at the bottom.
7 are provided, and upper and lower guide rollers 16 and 17 .
A boom 18 is inserted through 17 so as to be horizontally reciprocating.

A rack 19 of a predetermined length having all upward teeth is provided on the upper surface of the intermediate portion of the boom 18.
, a binion 20 provided at the top of the boom support structure 7
are meshing together.

Fig. 2 is a longitudinal sectional front view of one axle portion of the truck, Fig. 3 is a schematic plan view of the device of the present invention, Fig. 4 is a partial plan view of the boom and attachment, and Fig. 5 is the - ■It is a line vertical front view. As shown in FIGS. 2 to 5, a hydraulic motor 21 for traveling is provided on the truck 2, and an output shaft 21A of the hydraulic motor 21 has a chain wheel 22.
is fixed. The chain wheel 22 is meshed with a chain wheel 25 fixed to an axle 24 via a chain 23.

An attachment 26 is attached to the tip of the boom 18. The attachment 26 is suitable for supporting and replacing, for example, an apron 28 along the rolling roll 27 shown in phantom in FIG.

FIG. 6 is a partial side view showing another attachment 26'. The attachment 26' consists of a double-tubular support 29 that is rotatable about an axis ik provided at its tip, and a bracket 30 fixed to the support 29.
An eye plate 31 is fixed to the lower surface of the tip of the bracket 30.

As shown in the front view in FIG. 7, the eye plate 31 is used when a replacement part 32 is suspended by a wire 33 for cargo handling.

In addition, 34 is a wheel, 35 is a hydraulic motor for rotating the binion 20, and 36 is a support column 2 of the attachment 26'.
The head is attached to the tip of the boom 18 and has a built-in bearing 37 that is rotatably provided at the boom 9.

Next, the operation of the apparatus of this invention will be explained.

For example, when replacing the feed roller apron 28 of a rough rolling mill, run the trolley 2 on the rail 1, set the trolley 2 at a position suitable for the replacement work, and then drive the hydraulic motor 3. The screw punch 4 is rotated to position the ram 6 at a predetermined height, and the boom 18 is manually rotated horizontally to set it in a predetermined orientation.

Next, the hydraulic motor 35 is driven to gradually advance the boom 18i by rotating the binion 20, so that the attachment 26 comes into contact with the apron 28, and the apron 28 is fixed to the attachment 26. After that, raise the ram 6,
Apron replacement is completed by retracting boom 18 to remove apron 28 and then installing a new apron in the reverse order.

As is clear from the above description, the apparatus of the present invention can be used when replacing parts in a rolling mill.

Move the trolley on the rail close to the front of the part where the part to be replaced will be installed, adjust the height of the ram completely, and then move the boom forward to bring the tip of the boom into contact with the part. Therefore, parts that cannot be replaced using an overhead crane can be easily replaced.

As described above, according to the device of the present invention, each part in the rolling mill can be easily, quickly and safely replaced even if it is installed in a position where an overhead crane cannot be used. Many excellent effects are brought about, such as greatly improving productivity and work efficiency.

[Brief explanation of drawings]

Fig. 1 is a schematic longitudinal sectional view showing one embodiment of the device of the present invention, Fig. 2 is a longitudinal sectional front view of the truck portion, Fig. 3 is a schematic plan view of the device of the invention, and Fig. 4 is a boom and attachment. FIG. 5 is a vertical sectional front view taken along the line ■-IV in FIG. 4, FIG. 6 is a partial side view showing another attachment, and FIG.
The figure is a front view showing the bracket of the attachment of FIG. 6. In the drawing. 1...Rail, 2...Dolly, 3...Hydraulic motor, 4...Screw punch, 5...Straight hole, 6...Ram. 7... Boom support mechanism, 11... Cylindrical body, 14...
・Natsuto, 15... Guide hole. 16.17...Guide roller, 18...Boom, 1
9...Rack, 20...Pinion, 26.26'
··attachment. Applicant: Nippon Kokan Co., Ltd. Applicant: Mukai Kakoki Co., Ltd. Agent: Natsuo Shioya (and 2 others)

Claims (1)

[Claims] A trolley that can travel freely on the rails in the rolling mill, a boom support mechanism provided on the trolley so as to be vertically movable and horizontally rotatable, and a boom support mechanism provided on the boom support mechanism so as to be horizontally reciprocatable; 1. A parts replacement device for a rolling mill, comprising a boom having a parts replacement attachment.