JP2920466B2 - Detector support mechanism for hydraulic cylinder for position control - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detector support mechanism for a position control cylinder, and more particularly, to a position control cylinder detector support mechanism that facilitates maintenance work and replacement work of a position detector. .

[0002]

2. Description of the Related Art A vertical rolling mill is known as a kind of rolling mill for rolling a slab, for example. The vertical rolling mill performs rolling in the width direction with both side surfaces of a slab sandwiched between edger rolls, and controls the position of the edger rolls with a position control cylinder having a built-in position detector.
Hereinafter, a conventional position control cylinder will be described in detail with reference to FIGS.

As shown in FIG. 2, a vertical rolling mill 10 to which a conventional position control cylinder detector support mechanism is applied,
A pair of edger rolls 1 each of which is an example of a rolling roller in which upper and lower roller shafts 11 are supported between chocks 12.
Four. At the back of the edger roll 14, a moving base 17 that moves horizontally by moving the rod 16 of the pullback cylinder 15 in and out is arranged. The edger roll 14 is provided with a pair of upper and lower locking members 19 projecting from both sides of each chock 12 via a position controlling cylinder 18 in the middle, and moving the base 17.
The hooks 20a are detachably attached to the movable base 17 by being hooked on the distal end hook portions 20a of a pair of upper and lower guide hooking members 20 extending in the direction of the arrow from both ends. In FIG. 2, for the sake of avoiding complicating the drawing, the hooking members 19 are attached to the upper surface of the upper chock 12 and the lower surface of the lower chock 12, and the corresponding guide hooking members 20 are attached to the moving base 17. It is attached to the upper and lower outer surfaces. Less than,
The position control cylinder 18 will be described in detail.

As shown in FIG. 2, the position control cylinder 18 has a cylinder block 21 which can be moved in the direction of the arrow by using four guide engaging members 20 as guides. A hydraulic pipe 23 is connected via a joint 22. Behind the upper and lower ends of the cylinder block 21, a pair of screw-down screws 25 for moving the cylinder block 21 largely in the direction of the slab 13 are disposed horizontally via a press fitting 24. The tip of each screw 25 is covered with a bellows-shaped hood 26, and a pair of mutters 28 having nuts 27 screwed to the screw 25.
Are vertically fixed to a base (not shown) of the vertical rolling mill 10. By rotating the pressing screw 25 to the pressing side, the cylinder block 21
0, move to the edger roll 14 side,
Adjust the rolling interval of 3. The cylinder block 21
Of the pull-back cylinder 15
6 by pulling back.

As shown in FIG. 3, a shaft 24b projects from the center of a disk-shaped head 24a to which a screw 25 is fitted, so that an elongated hollow portion 24c is formed over the entire length. The shaft part 2
4b is inserted from the back into a two-stage cylindrical hollow portion 29 formed in the cylinder block 21. Cavity 2
A cylinder rod 31 whose front side protrudes outward and is supported by a lid member 30 is slidably accommodated in the cylinder 9, and a cylindrical hollow portion 32 is formed in the cylinder rod 31. The hollow portion 32 is divided into a front portion 32b and a rear portion 32c by an intermediate small-diameter portion 32a, and an opening at the front side of the front portion 32b is sealed by a tip block 33 via a bolt. An inner guide 34 externally fitted to the shaft portion 24b is housed in the rear portion 32c. The inner guide 34 is fixed at its base to the bottom surface of the hollow portion 29 of the cylinder block 21, and supplies oil into the position control cylinder 18 through an oil pipe 35 so that the cylinder rod 31 The inner peripheral surface of the hollow portion 29 and the outer peripheral surface of the cylinder rod 31 are slid in the direction of the arrow as small sliding surfaces to slightly push the edger roll 14 side in the same direction to reduce the rolling interval of the slab 13. Make fine adjustments.

A detection rod 37 of a position detector 36 is cantilevered in a hollow portion 32 of the cylinder rod 31 by a disk-shaped support bracket 38 which is detachably bolted to a bottom surface of a front portion 32b. The bracket 3 is housed in the hollow portion 24c at the tip of the shaft portion 24b.
The detection head 40 through which the detection rod 37 is inserted through
Are detachably bolted. Cylinder rod 3
The detection head 40 detects the amount of movement of the detection rod 37 in accordance with the sliding of 1 and calculates the tip position of the cylinder rod 31 by a control unit (not shown).

When checking or replacing the position detector 36, first, the edger roll 1 and the chock 12 are used.
4, the exposed end block 33 is loosened with bolts and removed, and the bolts of the support bracket 38 are removed from the front part 32 b of the opened hollow part 32 to take out the bracket 38. Removed from 40. The detection head 40 can be removed by removing the screw 25 from the press fitting 24, removing the press fitting 24 from the inner guide 34, and removing the bolt from the tip of the pulled-out press fitting 24 to remove the bracket 39 and the detection head 40. Remove. In the figure, reference numeral 41 denotes a wiring connected to the detection head 40.

[0008]

However, in the above-mentioned prior art, when checking or replacing the position detector 36 in this manner, the detection head 40 must be removed unless the screw 25, which requires a large amount of time for attachment and detachment, is removed. There was a problem that it could not be removed, the work was troublesome, and a long working time was required. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a position control cylinder detector support mechanism that facilitates maintenance work and replacement work of a position detector.

[0009]

According to the present invention, there is provided a semiconductor device comprising:
The detector support mechanism of the position control cylinder described in the above, a hollow cylinder is formed inside a cylinder block pressed by a screw down from behind, a cylinder rod that presses the rolling roller side is slidably mounted, A tip block is detachably attached to the opening on the tip side of the cylinder rod, an inner guide is attached to the cylinder block in a state of being housed in the hollow portion, and a detection rod of a position detector is provided in the hollow portion of the cylinder rod. Is detachably attached, the detection head of the position detector is detachably attached to the tip of the inner guide, and the size of the hollow portion of the cylinder rod is made large enough to allow the detection head to enter and exit. It is configured as follows.

[0010]

When inspecting or replacing the position detector in the position control cylinder to which the position control cylinder detector support mechanism according to claim 1 is applied, pull out the rolling roll.
As a result, the tip block exposed to the outside is removed from the tip of the cylinder rod, and the detection rod is pulled out from the opened hollow part. After that, remove the detection head, which can be seen further inside the hollow part, from the tip of the inner guide, and then remove the detection head from the tip side of the cylinder rod through the hollow part, making it easy to remove not only the detection rod but also the detection head. The maintenance work and replacement work of the position detector can be easily performed.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 is an enlarged sectional view of a main part of a detector support mechanism of a position control cylinder according to an embodiment of the present invention. In the drawings, the same components as those in FIGS. 2 and 3 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 1, a position control cylinder 50 to which a position control cylinder detector support mechanism according to one embodiment of the present invention is applied is provided between a cylinder block 21 and a screw down screw 25. A press fitting 24A consisting solely of a disk-shaped head to which the screw down screw 25 is fitted is interposed, and a casing 51 containing the detection head 40 is removably fastened to the distal end surface of the inner guide 34A by a bolt 52. In addition, the size of the small diameter portion 32a 'and the front portion 32b' of the hollow portion 32A of the cylinder rod 31A is such that the detection head 40 can be taken in and out together with the casing 51.

When inspecting or replacing the position detector 36A, first, the edger roll 14 is pulled out. Since the edger roll 14 has a structure in which the roll can be easily exchanged in the first place, it can be pulled out in a short time by a relatively simple operation. Next, the edger roll 14
By removing the exposed end block 33 from the end of the cylinder rod 31A with the removal of the support rod 38A, the bolt is loosened using a tool inserted from the front part 32b 'of the opened hollow part 32A to take out the support bracket 38A. , The detection rod 37 is withdrawn from the detection head 40. Following the operation of extracting the detection rod 37,
The tool is further inserted into the small diameter portion 32a 'of the hollow portion 32A, and the bolt 52 is removed by this tool to separate the casing 51 from the distal end surface of the inner guide 34A.
Through the small-diameter portion 32a 'and the front portion 32b' of the hollow portion 32A in order, and taken out of the cylinder rod 31A. The taken out detection head 40 is subjected to predetermined maintenance work or is replaced with a new detection head. The new detection head 40 after maintenance is completed or after replacement is
It is assembled to the position control cylinder 50 in a procedure reverse to the above.

As described above, in the conventional means, the detection head 40 cannot be taken out unless the screw down screw 25, which requires a large amount of time for attachment and detachment, cannot be taken out. Detection rod 3
Not only the detection head 7 but also the detection head 40 can be taken out from the easily removable edger roll 14, so that maintenance work and replacement work of the position detector 36A can be facilitated.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and any changes in the design without departing from the scope of the present invention are included in the present invention. In the embodiment, the vertical rolling mill has been described as an example. However, the present invention is not limited to this, and can be applied to, for example, a horizontal rolling mill having horizontal rolls for rolling in the thickness direction of a slab. Further, in the embodiment, the attachment position of the detection head is the tip surface of the inner guide. However, the attachment head is not limited to this, and may be attached to, for example, a concave portion formed on the tip surface of the inner guide. In short, as long as the detection head can be attached and detached from the outside through the hollow part of the cylinder rod,
It can be anywhere in the inner guide.

[0016]

According to the position control cylinder detector support mechanism of the present invention, not only the detection rod but also the detection head can be taken out from the easily-removable roll side, so that maintenance of the position detector is possible. Work and replacement work can be done easily.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part of a detector support mechanism of a position control cylinder according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a vertical rolling mill to which a detector support mechanism for a position control cylinder according to a conventional means is applied.

FIG. 3 is an enlarged sectional view of a main part of a detector support mechanism of a position control cylinder according to a conventional means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vertical rolling mill 11 Roller shaft 12 Chock 13 Slab 14 Edger roll 15 Pull back cylinder 16 Rod 17 Moving base 18 Position control cylinder 19 Hook member 20 Guide hook member 20a Tip hook 21 Cylinder block 22 Joint 23 Hydraulic pressure Pipe 24 Press fitting 24A Press fitting 24a Head 24b Shaft part 24c Hollow part 25 Screw down 26 Hood 27 Nut 28 Mutta 29 Hollow part 30 Cover member 31 Cylinder rod 31A Cylinder rod 32 Hollow part 32A Hollow part 32a Small diameter part 32a 'Small diameter part 32b front part 32b 'front part 32c rear part 33 end block 34 inner guide 34A inner guide 35 oil pipe 36 position detector 36A position detector 37 detection rod 38 support bracket 38A Support bracket 39 Bracket 40 Detection head 41 Wiring 50 Position control cylinder 51 Casing 52 Bolt

Continuing from the front page (72) Inventor Hiroshi Goto 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka Nippon Steel Corporation Machinery & Plant Business Department (58) Field surveyed (Int. Cl. ⁶ , DB name) B21B 31/32 B21B 13/06 B21B 27/02 B21C 51/00

Claims (1)

(57) [Claims] 1. A cylinder rod, which has a hollow portion formed therein and presses a rolling roller side, is slidably mounted in a cylinder block pressed by a screw from behind, and an opening at the leading end of the cylinder rod. A tip block is detachably attached to the inner guide is attached to the cylinder block in a state of being housed in the hollow portion,
Further, a detection rod of a position detector is detachably attached to a hollow portion of the cylinder rod, and a detection head of the position detector is detachably attached to a tip of the inner guide. A detector support mechanism for a position control cylinder, wherein the size is set so that the detection head can be taken in and out.