JPH0320006Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a disassembling and assembling device that allows easy disassembly and assembly of a guide member used in rolling a long bar.

[Conventional technology]

When rolling a steel bar or a steel section, it is necessary to provide a holding device in order to accurately guide the bar into the roll hole and to prevent the bar from tipping over and twisting during rolling.

This holding device consists of a box-shaped guide frame, a guide roller, etc. when the object to be guided is a steel bar, and an entry guide and a scraper when the object is a section steel material, etc., are installed on the guide block. The guide member can be moved in and out of the guide frame.

That is, since the guide member needs to be replaced depending on the size and shape of the bar to be guided, it is necessary to disassemble and assemble the guide member with respect to the guide frame.

[Problem that the invention attempts to solve]

Conventionally, the guide member has been disassembled and assembled manually.

However, since guide members are heavy items, each time they are replaced, it is necessary to use a large crane, chain block, hammer, etc. to pull out, lift, and turn over the guide members, which requires a lot of manual labor. This was both time consuming and dangerous.

[Means for solving problems]

The present invention is to enable mechanical replacement of the guide member as described above by removing it from the rolling mill and fixing it on a dedicated disassembly and assembly device. Therefore, it is an object of the present invention to provide a disassembly and assembly device for a guide member for a rolling mill that eliminates the above-mentioned conventional drawbacks.

Specifically, the present invention includes a pedestal 2, a guide frame 13 that is placed on the pedestal 2 and has a receiving hole 14 in the front and rear direction, and a pedestal 2 at the rear of the guide frame 13.
An entry guide 18 for guiding the bar to be rolled by a rolling mill is mounted on a guide block 15 which is placed so as to be movable back and forth.
and a guide member to which the guide roller 21 is attached, and an assembly bar located at the rear of the guide frame 13 and configured to push the guide member forward in order to fit the guide member into the receiving hole 14 of the guide frame 13. 5, located in front of the guide frame 13, and the guide frame 1
The disassembly bar 4 is configured to push out the guide member fitted in the receiving hole 14 of 3 backward, the upward receiving member 29 provided at a key point of the pedestal 2, and the pedestal 2. 2, and the guide frame 13
A fixing device 20 that is pushed so as to come into contact with a receiving member 29, a disassembly bar 4, and an assembly bar 5.
It is characterized by comprising a means for fixing each to the frame 2 individually, and an extendable hydraulic cylinder 8 installed across the disassembly bar 4 and the assembly bar 5.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. In each figure, the left side is the front, and the guide member is inserted into the box-shaped frame by moving from the back to the front.

A guide frame 13 of the holding device 3 is placed at the center of the upper surface of the pedestal 2 of the disassembly and assembly device 1 .

A disassembly bar 4 is located in front of the guide frame 13 (on the left side in FIG. 1), and an assembly bar 5 is located at the rear thereof.
are arranged respectively. Both bars 4 and 5 are
Rollers 6 provided at the bottom of these allow them to move freely back and forth.

At the lower ends of the leg pieces 4a and 5a hanging down from the disassembly bar 4 and the assembly bar 5, respectively, the front end of the piston rod 9 of the horizontal hydraulic cylinder 8 facing forward and the rear end of the same hydraulic cylinder 8 are attached.
Each is pivoted.

The disassembly bar 4 and the assembly bar 5 can be fixed to the frame 2 by fixing pins 11 and 12 provided at the front and rear ends of the main body 2, respectively.

When the hydraulic cylinder 8 is operated with either the disassembly bar 4 or the assembly bar 5 fixed, the other bar 4 or 5 moves back and forth.

FIG. 1 shows a state in which the assembly bar 5 is fixed and the disassembly bar 4 is movable back and forth.

Receiving hole 14 facing in the front-rear direction in guide frame 13
A guide block 15 is removably fitted therein.

The front part of an entry guide 18 is removably fitted into the rear part of the guide block 15.

A pair of vertical guide rollers 21 on the left and right are pivotally supported by a pair of vertical roller holders 19 provided at the front of the guide block 15.

The above guide block 15, entry guide 18, roller holder 19, guide roller 2
1 constitutes a guide member, these are:
The guide frame 13 is disassembled and assembled by the disassembly bar 4 and the assembly bar 5.

The guide frame 13 removed from the rolling mill is placed in the center of the disassembly and assembly device 1 as shown.

A front part of a pressing member 24 is pivotally connected to a bracket 23 fixed at a proper position in the middle of the frame 2 by a shaft 25 facing in the left-right direction.

At the rear end of the pressing member 24, an upper end of a piston rod 27 of a hydraulic cylinder 26 facing in the vertical direction is attached.
Piston rod 2 is pivotally connected to shaft 28.
7, the pressing member 24 is rotated counterclockwise in the figure.

As a result, the projection 24a fixed to the upper front surface of the pressing member 24 presses the lower rear surface of the guide frame 13, and the lower front surface of the guide frame 13 contacts the receiving member 29 that projects upward from the pedestal 2. The guide frame 13 is fixed on the pedestal 2.

The fixing device 20 is constituted by the pressing member 24, the hydraulic cylinder 26, the piston rod 27, the receiving member 29, and the like.

At the rear of the guide frame 13, a pedestal 31 that is raised and lowered by a drive device (not shown) is arranged. The upper surface 31a of the pedestal 31 is connected to the guide block 1.
5 is at the same height as the lower inner surface 13a of the guide frame 13.

A support block 32 is attached to the rear end of the disassembly bar 4 so as to be movable back and forth. That is, the support block 32 is moved back and forth by operating a handle 34 fixed to a rotating shaft 33 connected thereto.

The rear portions of attachment pieces 36 are fixed to both sides of the attachment 35 located on the front side of the guide block 15. The front end of the mounting piece 36 is removably attached to the support block 32 by a horizontal pin 37.

To replace the entry guide 18 and guide roller 21 at the same time, pull out the guide block 15 backward from the guide frame 13.

Attach the guide box attachment 35 to the support block 32 of the disassembly bar 4,
When the hydraulic cylinder 8 is driven with the assembly bar 5 fixed to the frame 2, the disassembly bar 4 moves backward and approaches the guide frame 13.

Then, the attachment 35 presses the roller holder 19 on the guide block 15, pulls out the guide block 15 rearward from the guide frame 13, and pushes it onto the pedestal 31 as shown in FIG.

While the pedestal 31 is lowered and raised, the entry guide 18 and guide roller 2 of desired dimensions are removed.
1 and place it on the pedestal 31.

Assume that the guide block 15 shown by the solid line in FIG. 2 has been replaced, and in order to fit it into the guide frame 13 and assemble it, the assembly bar 5 is moved forward.

To do this, the disassembly bar 4 is first moved to the front of the pedestal 2 and fixed to the pedestal 2 by the fixing pin 11, and then the fixing pin 12 is removed to allow the assembly bar 5 to move back and forth.

In this state, when the hydraulic cylinder 8 is driven and the assembly bar 5 is advanced, the assembly bar 5 moves to the second position.
The rear part of the entry guide 18 is pressed as shown by the chain line in the figure, and the guide block 15 is moved forward and fitted into the guide frame 13.

Thus, the assembly of the guide block 15 including the entry guide 18 and the guide roller 21 is completed.

[Effect of idea]

According to the present invention, when disassembling and assembling a rolling mill guide member that guides a long bar to be rolled by a rolling mill in accordance with the dimensions of the long bar, the heavy guide member is pulled out from the guide frame, The operation of pushing the guide member into the box-shaped frame can be performed without requiring any input, and the disassembly and assembly time of the guide member can be shortened and safety can be improved.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of the present invention with main parts taken longitudinally, and FIG. 2 is a longitudinal side view of the guide section. 1... Disassembly and assembly device, 2... Frame, 3... Holding device, 4... Disassembly bar, 5... Assembly bar, 6
... Roller, 7 ... Rail, 8 ... Hydraulic cylinder, 9 ... Piston rod, 11, 12 ... Fixed pin, 13 ... Guide frame, 14 ... Receiving hole, 15
... Guide block, 18 ... Entry guide, 19 ... Roller holder, 20 ... Fixing device,
21... Guide roller, 23... Bracket, 2
4 Pressing member, 25... Shaft, 26... Hydraulic cylinder, 27... Piston rod, 28... Shaft, 29
...Receiving member, 31...Base, 32...Support block, 33...Rotating shaft, 34...Handle, 35
...Attachment, 36...Mounting piece, 37...
…pin.

Claims (1)

[Claims for Utility Model Registration] A pedestal 2 and a receiving hole 14 placed on the pedestal 2 and extending in the front and rear direction.
a guide frame 13 having a guide frame 13; and a guide block 15 placed on the pedestal 2 so as to be movable back and forth behind the guide frame 13; an entry for guiding the bar to be rolled by a rolling mill; A guide member to which a guide 18 and a guide roller 21 are attached; a guide member located at the rear of the guide frame 13;
An assembly bar 5 that is pushed forward so as to fit into the receiving hole 14 of the guide frame 13; A disassembly bar 4 that is designed to push out the guide member rearward in order to pull out the guide member, and an upward receiving member 2 provided at a key point of the pedestal 2.
9, and a member 2 provided on the frame 2 to receive the guide frame 13.
Fixing device 20 that is pushed and moved to come into contact with 9
, means for individually fixing the disassembly bar 4 and the assembly bar 5 to the pedestal 2, and an extendable hydraulic cylinder 8 installed across the disassembly bar 4 and the assembly bar 5. A disassembly and assembly device for a guide member for a long steel rolling mill, characterized in that: