JPH0523718A - Roll chock and its change device - Google Patents

Abstract

PURPOSE:To mechanically change a chock to a roll neck part to save the manpower of change and to improve its efficiency. CONSTITUTION:This device is provided with a thrust clamp ring 5 protruded on the internal circumference, a lug 12 fitted slidably to the annular groove 18 of a roll neck part 1, a locking piece 16 energized so that it is protruded by the action of a coil spring 21 toward the outside and projecting part 14 mounted on both sides of it, and the ring 5 is integrally connected to an adjusting ring 4. When the ring 5 is rotated, fastened and unfastened by the adjusting ring 4, rotated by a given amount, the lug 12 abuts on a stopper bolt 19 mounted in the annular groove 18 and the ring 5 is positioned, the locking piece 16 is fitted by the action of a spring 21 into a locking groove 23 formed in the annular groove 18 and stops the rotation of the thrust clamp ring, that is, the adjusting ring 4 is locked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll chock in which rolls of various rolling mills are rotatably supported, which can be easily and quickly attached to and detached from a roll, and a reshuffling device for changing the chocks. Regarding

[0002]

2. Description of the Related Art Conventionally, when a roll chock is reassembled for roll replacement, a thrust clamp band attached to a thrust clamp ring is loosened by rotating an adjust ring, and then a thrust clamp is divided into two parts. Release the crimping of the ring, then remove the through bolt of the thrust clamp ring and remove the thrust clamp ring from the roll neck, then hang the chock with a crane or lift it to remove it from the roll neck, and reverse the above procedure. Install the chock by inserting it into the roll neck.

When the roll chock is reassembled, the thrust clamp ring is formed as an integral part,
A groove is formed on the inner peripheral surface of the roll, and a protrusion that fits into the groove is formed at the end of the roll.The groove is aligned with the protrusion and the thrust clamp ring is pushed into the annular groove of the roll neck. It is also proposed that the chock is fixed by shifting it from the projection and then rotating and adjusting the adjust ring to fix it (Japanese Utility Model Laid-Open No. 2-38105).

[0004]

When the roll chock is reassembled, the conventional method is to rotate the adjust ring, tighten the thrust clamp band or release it.
It takes a lot of labor and time, such as attaching and detaching through bolts.
The chok rearrangement work was complicated. In the latter method in which the thrust clamp ring is formed as an integral part, the thrust clamp ring can be easily attached and detached, but even in this case, the turning operation of the adjust ring, the pushing operation and the turning operation of the thrust clamp ring are required. In addition, it is considered necessary to attach through bolts to prevent the thrust clamp ring from rotating.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a roll chock and a reshuffling device for reshuffling the chock so that the choc reshuffling work can be performed easily and quickly.

[0006]

The roll chock of the present invention has an annular thrust clamp ring which fits in the annular groove of the roll neck portion, and the ring is provided with a protrusion on the inner periphery thereof.
It fits slidably into the annular groove through the groove from the roll end to the annular groove of the roll neck, and when the thrust clamp ring is rotated a certain amount in the annular groove, it serves as a stopper protruding into the annular groove. The locking claw and spring are always biased by the action of the spring so that it projects from the thrust clamp ring, and it fits into the locking groove formed in the annular groove when the thrust clamp ring is rotated until the claw locks with the stopper. There is a locking piece for joint locking, the locking piece is exposed to the outside, and the operation part that pushes the locking piece against the action of the spring is integrally provided, and the thrust clamp ring further has a roll chock. An adjust ring that is screwed in and moves back and forth in the roll axial direction by rotation is integrally connected.

When the roll chock is recombined, the operating portion is operated to push the locking piece against the action of the spring and disengage it from the locking groove. This allows the thrust clamp ring to rotate in the annular groove, and then rotates the thrust clamp ring until the pawl is aligned with the groove. Along with this, the adjust ring also rotates in a loosening direction. After matching the claw and groove, remove the chock from the roll neck together with the adjust ring and thrust clamp ring. Attach the chock in the reverse order of the above.
That is, the chock is inserted into the roll neck together with the thrust clamp ring fixed to the adjust ring, and the claws of the thrust clamp ring are aligned with the groove and further pushed.
When the pawl hits the annular groove, the thrust clamp ring is rotated together with the adjust ring in the tightening direction. When the pawl is rotated until it abuts on the stopper, the locking piece fits into the locking groove and locks the adjust ring and thrust clamp ring. At the same time, the rotation of both moves to the roll end side. By moving the, the chock is tightened and fixed.

The chock can be fixed or released by rotating the thrust clamp ring manually, for example, by inserting the rod into the thrust clamp ring or the adjust ring in the radial direction and rotating the rod, but it is preferable to operate. Mechanically by means of a device, more preferably by pushing the operating portion against the action of the spring by the operating device to disengage the locking piece from the locking groove,
At the same time, the thrust clamp ring is rotated by sandwiching the protruding portion protruding from the thrust clamp ring.

In a preferred embodiment of the thrust clamp ring in the case of using the operating device, the operating portion is exposed on the front side surface of the thrust clamp ring, and the locking piece is projected by the action of the spring from the front side surface of the thrust clamp ring to push the operating portion. Along with this, it is extruded into the annular groove from the locking groove formed in the front inner wall of the annular groove. In another aspect, the operating portion is exposed on the circumferential surface of the thrust clamp ring, and the pushing piece rotates the locking piece to form the locking groove formed on the groove bottom of the annular groove or the rear inner wall of the annular groove. It comes off from the locking groove.
In either case, protrusions are provided on both sides of the operating portion to provide a function as a guide for the movement of the locking piece, protect the locking piece from damage, and have a single fork-shaped member. It is desirable that the operation part is pushed in and the projection part is clamped.

In the thrust clamp ring operating device in which the operating portion is exposed on the front side surface of the thrust clamp ring and the protrusions are provided on both sides of the thrust clamping ring, the operation device is bifurcated into a crank that can be swung by a certain amount around the axis of the roll. The rod is attached so that it can move forward and backward toward the front side of the thrust clamp ring,
A projecting piece which is provided at the tip of the rod and which sandwiches the projecting part is provided with a projecting piece which is in contact with the operating part at an intermediate part thereof.

According to this device, when the chock is detached, the bifurcated rod is moved forward and the projecting portion is clamped by the bifurcated,
At the same time, the projecting piece pushes in the operating portion, and the locking piece is disengaged from the locking groove to allow the thrust clamp ring to rotate. After that, when the crank is swung by a certain amount, the thrust clamp ring is rotated together with the adjust ring by the bifurcated portion that sandwiches the protrusion to loosen, and the claw is aligned with the groove. After that, remove the chock from the roll neck together with the thrust clamp ring. The attachment of the chock is performed in the same manner as described above in the reverse order of the above.

For a thrust clamp ring in which the operating portion is exposed on the circumferential surface of the thrust clamp ring and projections are provided on both sides of the thrust clamp ring, the bifurcation of the bifurcated rod extends axially along the circumferential surface of the thrust clamp ring. It moves back and forth, and the projecting piece between the forks pushes the operation part. When the pair of rolls are supported by the support base vertically at a constant interval, it is desirable that the operating devices are also provided at the same vertical intervals so that the chock can be fixed or released at the same time, and more preferably the operating device or At least one of the support bases can be raised and lowered, and the vertical position of the operating device or the roll support bases can be adjusted according to the roll diameter.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 1 is a roll neck portion, 2 is a roll chock having a bearing 3, 4 is an adjust ring, 5 is a thrust clamp ring, and the adjust ring 4 is a roll neck as shown in FIG. The key 7 inserted into the key groove 6 of the portion 1 is connected by a bolt 8 and is screwed into a ring carrier 9 which is integrated with the roll chock 2 and is rotated forward or reverse to axially move on the roll neck portion. The thrust clamp ring 5 is integrally connected to the thrust clamp ring 5 by a bolt 11.

As shown in FIG. 3, the thrust clamp ring 5 includes a pawl 12 projecting at a symmetrical position on the inner periphery and two pawls on the drive side where no thrust load is applied. More than that, for example, four are preferably provided in a cross shape on the work side.) A groove 13 (see FIG. 4) and a groove 13 formed in a diametrical direction at a position corresponding to the claw 12 on the front surface of the thrust clamp ring. The protrusions 14 provided on both sides are fitted into the spaces between the protrusions and in the groove,
Has a locking piece 16 rotatably supported by a pin 15, and the pawl 12 passes through the groove portion 17 of the roll neck portion 1, fits into the annular groove 18, and slides, and its moving range. Is the annular groove 18
It is designed to be regulated by the stopper bolt 19 embedded in the. That is, thrust clamp ring 5
After the claw 12 is pushed into the annular groove in alignment with the groove portion 17, the claw 12 can be rotated to a position where it hits the bolt 19, and the adjust ring 4 and the thrust ring that advance and retreat in the axial direction along with the rotation. When the clamp ring 5 is rotated to a position where the claw 12 comes into contact with the bolt 19, the clamp ring 5 moves axially forward (to the right in FIGS. 2 and 4) and the claw 12 moves to the annular groove 1.
It is crimped to the front inner wall of 8 to stop the axial movement of the roll chock 2.

As shown in FIG. 4, the locking piece 16 has a blind hole 20 in the axial direction, and the blind spring 20 has a coil spring 21 and a rod 22 protruding by the action of the coil spring 21 and abutting the bottom of the groove 13. Are attached, and the locking piece 16 is attached to the coil spring 2
4 is urged to rotate in the counterclockwise direction in FIG. 4, and at the position where the claw 12 hits the bolt 19, the claw 12 is fitted into the locking groove 23 formed in the inner wall of the front side of the annular groove 18. The rotation of the thrust clamp ring 5, that is, the loosening of the adjust ring 4 is prevented.

FIG. 5 shows a reshuffling device for the roll chock 2, in which a support frame 27 is provided vertically on a table 26 that is supported so as to be able to move forward and backward toward the roll 25, and is moved forward or backward by a pinion rack mechanism (not shown). A mounting frame 28 is attached to one side of the mounting frame 28, and a pinion rack mechanism (not shown) provided separately from the above can be used to move up and down to adjust the position, and an operating device 29 for fixing or releasing the chock is provided. It is provided in upper and lower two stages.

Although not shown, each operating device 29 is attached to a crank that rotates a fixed amount around the axis of the roll 25, and the position of which can be adjusted in the radial direction of the crank according to the roll diameter, and the roll. 25, a rod 31 that is supported so as to be able to move forward and backward and is switched between a forward movement position and a backward movement position by a hydraulic cylinder, and has a tip end that holds the projection 14 as shown in FIG. Again 32
And a projecting piece 33 that is located between the fork and presses the end surface of the locking piece side as the operating portion.

On the other side of the support frame 27, a support base 35 is provided in two steps vertically and equidistantly from the operating device 29 toward the roll, and each support base 35 is elastically supported vertically by a leaf spring 37. In addition, the spring 38 also elastically supports it in the left-right direction. A chock cradle 36 is fixed on each of them so that the roll chock 2 can be supported.

Incidentally, the rolls 25 are supported on a roll support base as shown in FIG. 6 in two steps, and the space C between the rolls is constant and does not change even between rolls having different diameters as shown in the figure. The device 29 and the support base 35 are also arranged at the same interval as the above-mentioned interval C. The present apparatus is configured as described above, and the chock at the roll end is recombined as follows.

With the base 26 advanced as shown in FIG. 5, the roll 25 is placed on the roll support base and the chock 2 is placed on the receiving base by a crane operation. Chock 2
The pedestal 36 on which No. 1 is placed is sunk by a required amount by the bending of the leaf spring 37 and supports the roll. As described above, the rolls 25 are supported in upper and lower two stages, respectively. Next, in each of the upper and lower operating devices 29, the rod 31 is switched to the forward position, the fork 32 holds the projection 14, and the projection 33 pushes the locking piece 16 against the action of the coil spring 21. It is detached from the stop groove 23. After the rod 31 is switched to the forward position, the crank 31 is rotated to rotate the rod 31 by a certain amount, and the projection 14 sandwiched by the forks 32 is grasped to hold the thrust clamp ring 5 together with the adjust ring 4 in FIG. Rotate a fixed amount counterclockwise. Along with this, the adjust ring 4 and the thrust clamp ring 5 move to the left in FIG. 2 to release the crimping of the claw 12 to the side wall of the annular groove to cause slack.

When the thrust clamp ring 5 rotates by a certain amount and the claws 12 are aligned with the groove portions 17, the base 26 of FIG. 5 is retracted to the left in the drawing, and in the middle of that, the respective choke receiving bases 3 are provided.
The chocks 2 attached to the rollers 6 come off the roll neck portions 1, respectively. When the chock 2 is attached to the roll neck portion 1, the base 26 is moved forward in the opposite manner to the above, and the vertical position of the roll is adjusted to perform centering. Then, the thrust clamp ring 5 is rotationally adjusted to align the claw 12 and the groove portion 17. After that, the table 26 is further advanced to insert the upper and lower chocks 2 into the roll neck portion 1, respectively. At this time, when the roll ends of the upper and lower rolls 25 are displaced to the left and right,
The support base 35 is displaced left and right due to the bending of the spring 38, and the required amount is inserted to compensate for the displacement. Next, the rod 31 is switched to the forward position, the projection 14 is sandwiched by the fork 32, and the projection 33 pushes the locking piece 16 into the annular groove.
After that, when the thrust clamp ring 5 is rotated by a certain amount by the rotation of the rod 31, and the pawl 12 is stopped by hitting the bolt 19, the locking piece 16 is fitted in the locking groove 23, and the rotation of the thrust clamp ring 5 is stopped, and The tightening of the tightened adjust ring 4 is prevented.

The roll chock 2 is attached to the roll neck portion as described above, and after the attachment is completed, the base 26
Moves backwards, leaving the roll chock 2 fixed to the roll neck.

[0023]

According to the roll chock of the present invention, the thrust clamp ring is fixedly rotated by a fixed amount until the pawl is engaged with the stopper, and the locking piece is fitted into the engaging groove to thrust the thrust. The rotation of the clamp ring is stopped, that is, the slack of the roll chock is prevented, and when removing the roll chock, the thrust clamp ring is released in a reverse direction by a fixed amount to release the fixation.
There is no need to rotate the adjust ring, stop rotation by attaching the through bolts, or remove the through bolts, and can easily and quickly change the chock.

In the roll chock in which the projections are provided on both sides of the operating portion, the locking pieces are guided by the projections so that their movements are smooth, and the locking pieces can be prevented from being damaged. By providing the protrusion in the intermediate portion, the protrusion can be gripped and the operating portion can be pushed. According to the reassembling device provided with the operating device of the present invention, the roll chock can be fixed and released mechanically, and the choc reassembling work can be labor-saving and efficient.

If the operating devices are provided in two stages, upper and lower, at the same intervals as the rolls, and at least one of the operating device and the roll supporting base can be raised and lowered, the roll chocks can be fixed to the upper and lower rolls at the same time, or at the same time. The fixing can be released, and it can be applied to rolls having different diameters. In addition, by providing an advancing / retreating chock cradle, it is possible to pull out or insert the chock from the roll neck portion without operating the crane.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a roll chock.

FIG. 2 is an enlarged sectional view of a main part of a roll chock.

FIG. 3 is a cross-sectional view of a roll neck portion equipped with a thrust clamp ring.

FIG. 4 is an enlarged sectional view of a main part of another part of the roll chock.

FIG. 5 is a schematic diagram of a recombination device.

FIG. 6 is a schematic view of a roll support base.

FIG. 7 is a diagram showing a state in which the protrusion is sandwiched by two forks.

[Explanation of sign]

1 Roll Neck 2 Roll Chock 4 Adjust Ring 5 Thrust Clamp Ring 12 Claw 13 Groove 14 Projection 16 Locking Piece 17 Groove 18 Annular Groove 19 Stopper Bolt 21 Coil Spring 22 Rod 23 Locking Groove 25 Roll 26 Stand 28 Mounting Frame 29 Operation Device 31 Rod 32 Two-pronged 33 Projection piece 35 Support stand 36 Chock support stand

Claims (8)

[Claims] 1. An annular thrust clamp ring fitted in an annular groove of a roll neck portion, the ring having a ring-shaped thrust clamp ring projecting from the inner periphery of the roll neck portion and passing through a groove portion extending from the roll end to the annular groove of the roll neck portion. A claw that slidably fits in the annular groove and that engages with a stopper that projects in the annular groove when the thrust clamp ring is rotated a certain amount in the annular groove, and the action of the spring always keeps the thrust clamp ring from the thrust clamp ring. Provided with a locking piece that is biased to project and engages and locks with the locking groove formed in the annular groove when the thrust clamp ring is rotated until the claw locks with the stopper. Is exposed to the outside, and the operating part that pushes the locking piece against the action of the spring is integrally provided, and the thrust clamp ring is further screwed into the roll chock and is moved forward and backward in the roll axial direction by rotation. Is one Chocks provided linked to. 2. The operating portion is exposed on the front side surface of the thrust clamp ring, and the locking piece projects from the front side surface of the thrust clamp ring and fits into a locking groove formed on the front inner wall of the annular groove. Roll chock. 3. The operating portion is exposed on the peripheral surface of the thrust clamp ring, and the locking piece is fitted in a locking groove formed on the groove bottom of the annular groove or on the rear inner wall of the annular groove. Roll chock. 4. The roll chock according to claim 2, wherein the thrust clamp ring is provided with a protrusion on the inner side of the operating portion. 5. The roll chock reassembling apparatus according to claim 2, wherein projections are provided on both sides of the operating portion, and the rod is directed toward the front side surface of the thrust clamp ring in a crank that can be swung by a certain amount about the axis of the roll. A reassembling device equipped with an operating device which is attached so as to be able to move forward and backward, and which is provided so as to project from the tip of the rod, and a projecting piece that is in contact with the operating part is provided in the middle of the forked part that sandwiches the projecting part. 6. The roll chock reassembling device according to claim 3, wherein the operating portion has projections on both sides thereof, and the rod is arranged along the circumferential surface of the thrust clamp ring in a crank which can be swung by a certain amount about the axis of the roll. It is attached so that it can move forward and backward,
A recombining device provided with an operating device that is provided at a tip of a rod and has a projecting piece that is in contact with an operating unit at an intermediate portion of a fork that sandwiches the projecting portion. 7. A pair of rolls are supported by a support base in upper and lower two stages with a constant axial distance, and operating devices are provided in upper and lower two stages at equal intervals, and at least one of the roll supporting base and the operating device is provided. 7. The recombination device according to claim 5, wherein the recombination device can be moved up and down and the vertical position can be adjusted. 8. A chock cradle for advancing and retreating toward a roll, supporting the chock and pulling out the chock from the roll neck portion, or providing a chock cradle for inserting the chock into the roll neck portion. The recombining apparatus according to claim 1.