JPH0570704U - Roll chock keeper device for rolling mill - Google Patents

Abstract

(57) [Summary] [Object] The present invention is a keeper device that provides a mechanism capable of easily adjusting a gap between a keeper plate for fixing a rolling roll chock and a housing. [Structure] The fine adjustment member having one end fixedly connected to the wedge plate and the bolts implanted in the fixed plate allow the wedge plate to be independently movable, so that the gap adjustment can be performed uniformly and quickly. [Effect] When adjusting the backlash, the work of mounting / removing the studs for fixing the studs and nuts and the uniform tightening work of the nuts on the two bolts are simplified, and the rolling that occurs from the non-rolling target due to the thrust of the backup roll. It is possible to prevent the material from meandering.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a roll chock keeper device for a rolling mill, in which a gap (play) between a keeper plate for fixing a rolling roll chock and a housing can be easily absorbed by adjusting a wedge plate and its fine adjustment member. It provides various mechanisms.

[0002]

[Prior Art]

 FIG. 2 is an explanatory view of the roll chock and the housing, (A) is a side view of the rolling mill, and (B) is a plan view of the rolling mill.

The work roll 1 and the backup roll 2 incorporated in the housing of the rolling mill have a roll chock keeper device provided with the roll chock 3 in the housing 4 to fix the axial movement of the roll to prevent so-called roll thrust. There is.

3A and 3B are explanatory views of a conventional roll chock keeper device. FIG. 3A is an enlarged explanatory view of a portion A of FIG. 2, and FIG. 3B is an enlarged explanatory view of a portion B of FIG. As shown in FIG. 3, a two-piece structure of a keeper plate 5 for fixing the roll chock 3 and a fixing wedge plate 6 for holding the roll chock 3 was attached to the housing 4 with two upper and lower studs 7, 8 and nuts. It is a thing.

That is, the keeper plate 5 is moved forward and backward in a direction perpendicular to the axial direction of the roll chock 3 by the hydraulic cylinder 9 provided on the side portion of the housing 4, and the tip end is provided with the recessed portion 10 provided on the side surface of the roll chock. It has a taper surface 11 that can be inserted into and taken out of and has a thin roll chock side on the back.

The fixing wedge plate 6 has a tapered surface 12 having a thickened wall on the roll chock side. The tapered surface 12 slidably abuts the tapered surface 11 of the keeper plate 5 and a flat surface 13 is provided on the back. Have.

The studs 7 and 8 and the nut are for inserting the keeper plate 5 into a long hole 14 which is cut out in the sliding direction to tightly connect the housing 4 and the fixing wedge plate 6.

[0008]

[Problems to be solved by the device]

 In particular, the roll chock 3 of the backup roll 2 in FIG. 2 is a roll chock keeper device that suppresses thrust force generated in the backup roll when the rolled material bites or when the work roll 1 is axially shifted. Is prone to rattling of the fixing wedge plate 6, bolts 7, 8 and nuts, and is often broken or damaged.

This is because when the one-piece fixing wedge plate 6 is received by the two bolts and nuts, a one-sided phenomenon is likely to occur due to errors such as initial bolt extension, nut slack, and tightening conditions. This is because the thrust impact concentrates in one of the two bolts.

As a result, the conventional keeper device is frequently repaired and adjusted, and the nuts of the studs for implanting the housing are often tightened. In this case, a long repair time is required.

[0011]

[Means for Solving the Problems]

 FIG. 1 is an explanatory view of a keeper device according to the present invention, FIG. 1A is an enlarged explanatory view of a part of FIG. 2, and FIG. The present invention provides an excellent roll chock keeper device which solves the above-mentioned problems, and its characteristic means is to provide a housing 4 of a rolling mill as shown in one embodiment of the present invention shown in FIG. A built-in roll chock keeper device comprising: A hydraulic cylinder 9 provided on the side portion 4 of the housing advances and retreats in a direction perpendicular to the axial direction of the roll chock 3 to allow the tip end to be fitted in and out of the recess 10 provided on the side surface of the roll chock 3 and to the back chock. A keeper plate 5 having a tapered surface 11 whose side is thin; The roll chock 3 has a thickened tapered surface 12, and the tapered surface 12 slidably abuts on the tapered surface 11 of the keeper plate 5 and the flat surface 13 is provided on the back to make a pair of upper and lower adjustments. Wedge plates 6a, 6b ,. A fixing plate 16 for slidably abutting the front flat surface 15 on the back flat surfaces 13 of the wedge plates 6a, 6b; Bolts 7, 8 and nuts which are inserted into the long holes 14a, 14b notched in the sliding direction in the keeper plate 5 and the wedge plates 6a, 6b to tightly connect the housing 4 and the fixing plate 16, respectively. Wedge plate fine adjustment with one end fixedly connected to the anti-chock side of the wedge plates 6a, 6b and the other end movably connected to the anti-chock side of the fixing plate 16 (screw connection by bolts 17a, 17b) It is a roll chock keeper device of a rolling mill having members 19a and 19b.

That is, according to the present invention, the wedge plates 6a and 6b, which are divided into a pair of upper and lower parts, can be independently moved in the roll chock direction and the opposite direction by rotation of the bolts 17a and 17b of the wedge plate fine adjustment members 19a and 19b. Therefore, the gap adjustment among the initial keeper plate 5, the adjustment wedge plates 6a and 6b, and the fixing plate 16 can be uniformly and quickly performed. With this, during rolling, it is possible to prevent one-sided effects of thrust impacts received from the rolling rolls and to prevent play in the entire device from occurring slightly or completely.

Even if looseness occurs due to the thrust force received by the keeper plate 5 from the rolling rolls via the chocks 3 during the rolling operation after the initial adjustment, the fine adjustment of the advance / retreat of the wedge plates 6a, 6b is performed within a slight amount. Only by doing so, you can quickly and exactly eliminate all.

Accordingly, the keeper plate 5 and the wedge plates 6a and 6b are inserted into the long holes 14a and 14b, which are long notches in the sliding direction, and the housing 4 and the fixing plate 16 are tightly connected to each other. The bolts 7 and 8 and the nuts 20a and 20b are prevented from being broken or damaged due to looseness over a long period of time, and their lifespan is greatly extended, and the rolling operation is stabilized at a high level.

Next, a procedure for mounting the roll chock keeper device of the present invention on the housing 4 will be described. Attach the studs 7 and 8 at predetermined positions on the side surface of the housing 4. Next, the piston rod of the hydraulic cylinder 9 installed on the side of the housing is connected to the rear part of the keeper plate 5, and the guide block GA of the keeper plate 5 is attached.

Wedge plates 6a and 6b, which are divided into two studs each having two studs on the back side, are superposed on the back tapered surface 11 in guides provided on both sides of the back side of the keeper plate 5 and in the center. The fixing plate 16 which covers the whole with the cover 18 provided on the side is attached. After adjusting the gap between each plate, tighten the hexagon nuts 20a and 20b to fix.

The connection between the keeper plate 5 and the hydraulic cylinder 9 is such that the front end of the keeper plate 5 is fitted into the recess 10 provided on the side surface of the roll chock 3 and the keeper plate 5 is clamped by the wedge plates 6a and 6b. In this state, when the clearance between the center of the trunnion of the hydraulic cylinder 9 and the center of the pin at the stroke end and the wedge plates 6a and 6b is zero, the adjustment is made so that the hydraulic cylinder becomes the stroke end.

The adjustment method of the gap (play) between the receiving surface for fixing the roll chock 3 and the housing 4 is to tighten the play adjusting bolts 17a, 17b with the keeper plate 5 clamped by the wedge plates 6a, 6b. The wedge plates 6a and 6b for absorbing backlash are moved to the side opposite to the chock.

When the loose adjustment fine bolts 17a and 17b are no longer tightened, the clearance between the keeper plate 5 and the wedge plates 6a and 6b becomes 0, which means that the adjustment is completed. In this way, the backlash of the roll chock keeper device is reduced, and the backlash can be adjusted in a short time, and the facility maintenance can be simplified.

[0020]

[Effect of the device]

 As described above, according to the roll chock keeper device of the present invention, it is troublesome to install / remove the studs and studs of the implant bolts and nuts when adjusting the play of the device, and the even tightening of the nuts to the two bolts. , It took a long time to be simplified, and it became easier to adjust.

The greatest effect is to reliably prevent the thrust received from the work roll of the backup roll, to prevent the meandering of the rolled material caused by the thrust of the backup roll from the non-rolling target, and to stabilize the rolled steel sheet of good quality. This is what made it possible to manufacture.

[Brief description of drawings]

FIG. 1 is an explanatory view of a roll chock keeper device of the present invention,
2 is an explanatory view of a roll chock and a housing, and FIG. 3 is an explanatory view of a conventional roll chock keeper device.

[Explanation of symbols]

1: Work roll, 2: Backup roll, 3:
Roll chock, 4: Housing, 5: Keeper plate, 6: Wedge plate, 6a (6b): A pair of upper and lower wedge plates, 7: Implant bolt, 8:
Implant bolt, 9: Hydraulic cylinder, 10: Recessed portion of roll chock, 11: Tapered surface, 12: Tapered surface, 13: Flat surface, 14: (14a, 14
b): long hole, 15: front flat surface of fixing plate, 16: fixing plate, 17a (17b): bolt, 18: cover, 19a (19b): wedge plate fine adjustment member, 20a (20b): nut.

Claims (1)

[Scope of utility model registration request] 1. A roll chock keeper device incorporated in a housing of a rolling mill, comprising: A hydraulic cylinder provided on the side of the housing moves forward and backward in the direction perpendicular to the axial direction of the roll chock to allow the tip to fit in and out of the recess provided on the side of the roll chock, and a tapered surface with a thin roll chock on the back. A keeper plate having; A pair of vertically adjustable wedge plates having a tapered surface with a thickened roll chock side in the front part, which slidably abuts the tapered surface of the keeper plate and has a flat surface in the back part. When, . A fixing plate that slidably abuts the front flat surface on the back flat surface of the wedge plate; Bolts and nuts for inserting a long hole notched in the sliding direction into each of the keeper plate and the wedge plate to tightly connect the housing and the fixing plate, A roll chock keeper device for a rolling mill having a wedge plate fine adjustment member, one end of which is fixedly connected to the anti-chock side of the wedge plate, and the other end of which is connected to the anti-chock side of the fixing plate so as to be able to advance and retreat.