JP2982983B2 - Roll chock and its rearrangement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll chock which rotatably supports the rolls of various rolling mills, which can be easily and quickly attached to and detached from the rolls, and a rearrangement apparatus for rearranging the chocks. About.

[0002]

2. Description of the Related Art Conventionally, when a roll chock is changed for a roll change, a thrust clamp is divided into two parts by loosening a thrust clamp band attached to a thrust clamp ring after loosening by rotating an adjust ring. Release the crimp of the ring, remove the thrust clamp ring through bolts from the thrust clamp ring, remove the thrust clamp ring from the roll neck, and then remove it from the roll neck while hanging or lifting the chock with a crane, etc. The chock is inserted into the roll neck and fixed.

[0003] In addition, when changing the roll chock, a thrust clamp ring is formed as an integral part.
A groove is formed on the inner peripheral surface and a projection is formed at the end of the roll to fit into the groove.The groove is aligned with the projection, the thrust clamp ring is pushed into the annular groove of the roll neck, and then the groove is turned by a fixed amount. There has also been proposed one in which the chock is fixed by displacing the protrusion from the projection and then rotating and fixing the adjuster ring (Japanese Utility Model Application Laid-Open No. 2-38105).

[0004]

Conventionally, when changing the roll chock, the rotating operation of the adjust ring, the tightening or release of the thrust clamp band,
It requires considerable labor and labor such as attaching and detaching through bolts,
The chocking work was complicated. In the latter method in which the thrust clamp ring is formed as an integral part, the attachment / detachment of the thrust clamp ring is easy, but even in this case, the rotating operation of the adjust ring, the pushing and the rotating operation of the thrust clamp ring are necessary, and In addition, it may be necessary to mount 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 in which the chocking operation can be performed easily and quickly and a changing device for changing the chocks.

[0006]

A roll chock according to the present invention has an annular thrust clamp ring fitted into an annular groove of a roll neck portion, the ring being protruded from an inner periphery of the ring.
A stopper that is slidably fitted into the annular groove through the groove from the roll end to the annular groove of the roll neck, and is projected into the annular groove when the thrust clamp ring is rotated by a certain amount in the annular groove. The claw to be locked and the spring are always urged to protrude from the thrust clamp ring by the action of the spring, and fit into the locking groove formed in the annular groove when the thrust clamp ring is rotated until the claw is locked to the stopper. A locking piece for engaging and locking is provided.The locking piece is externally exposed, and an operating part for pushing the locking piece against the action of the spring is provided integrally, and the thrust clamp ring is further provided with a roll chock. An adjust ring that is screwed in and moves forward and backward in the roll axis direction by rotation is integrally provided.

When changing the roll chock, the operating portion is operated to push the locking piece against the action of the spring and to release the locking piece from the locking groove. This allows the thrust clamp ring to rotate within the annular groove, and then rotates the thrust clamp ring until the pawl coincides with the groove. Accordingly, the adjust ring also rotates in the loosening direction. After aligning the claw with the groove, remove the chock from the roll neck together with the adjust ring and the thrust clamp ring. The chocks are mounted in the reverse order.
That is, the chock is inserted into the roll neck together with the thrust clamp ring fixed to the adjust ring, and the claw of the thrust clamp ring is further pressed in accordance with the groove.
When the pawl hits the annular groove, the thrust clamp ring is rotated together with the adjust ring in a direction to tighten. When the pawl is rotated until it hits the stopper, the locking piece is fitted and locked in the locking groove, the rotation of the adjust ring and the thrust clamp ring is stopped, and at the same time, the roll end is rotated by the rotation of both. The chock is tightened and fixed by the movement of.

The fixation or release of the chock by the rotation of the thrust clamp ring can be manually performed, for example, by inserting the rod in the thrust clamp ring or the adjust ring in the radial direction and rotating the rod. It is made to be performed mechanically by the device, more preferably by pushing the operating part against the action of the spring by the operating device to release the locking piece from the locking groove,
At the same time, it is performed by rotating the thrust clamp ring while pinching the protrusion protruding from the thrust clamp ring.

In a preferred embodiment of the thrust clamp ring when the operating device is used, the operating portion is exposed to the front surface of the thrust clamp ring, and the locking piece projects from the front surface of the thrust clamp ring by the action of the spring, and pushes the operating portion. With this, it is pushed into the annular groove from the locking groove formed on the front inner wall of the annular groove. In another aspect, the operating portion is exposed on the peripheral 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. From the locking groove.
In any case, the projections are provided on both sides of the operation portion, thereby providing a function as a guide for the movement of the locking pieces, protecting the locking pieces from being damaged, and a single fork-shaped member. It is desirable that the pushing of the operation unit and the clamping of the projection are performed by the operation.

An operating device for a thrust clamp ring having an operating portion exposed on the front side surface of the thrust clamp ring and provided with projections on both sides thereof is provided with a bifurcated crank that can rotate a fixed amount around the axis of the roll. The rod is attached to be able to advance and retreat toward the front side of the thrust clamp ring,
A fork projecting from the tip of the rod is provided at a fork that sandwiches the protrusion, and a protrusion that hits the operating portion is provided at an intermediate portion thereof.

According to the present apparatus, when the choke is removed, the forked rod is advanced and the forked portion is clamped.
At the same time, the protruding piece pushes the operating portion, and the locking piece is released from the locking groove, so that the thrust clamp ring can be rotated. Thereafter, when the crank is turned by a predetermined amount, the thrust clamp ring is rotated together with the adjust ring with the fork that clamps the protruding portion, is loosened, and the claw coincides with the groove. Then, remove the chock from the roll neck together with the thrust clamp ring. The chocks are mounted in the same manner as described above by the reverse procedure.

[0012] For a thrust clamp ring in which an operating portion is exposed on the peripheral surface of the thrust clamp ring and projections are provided on both sides thereof, a bifurcated rod has a bifurcated rod which extends axially along the peripheral surface of the thrust clamp ring. It moves forward and backward, and the protruding piece between the forks pushes the operation unit. When a pair of rolls are supported vertically at regular intervals by the support base, it is preferable that operating devices are also provided at the same intervals vertically so that the chock can be fixed or released at the same time, more preferably the operating device or At least one of the supports can be moved up and down, and the vertical position of the operating device or the roll support can be adjusted according to the roll diameter.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 1 is a roll neck, 2 is a roll chock provided with 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 is inserted into the key groove 6 of the part 1 and screwed into a ring carrier 9 which is connected by a bolt 8 and integrated with the roll chock 2, and is axially moved on the roll neck part by forward or reverse rotation. The thrust clamp ring 5 is integrally connected to the thrust clamp ring 5 by bolts 11.

As shown in FIG. 3, as shown in FIG. 3, the thrust clamp ring 5 has two claws 12 projecting at symmetrical positions on the inner periphery. (The number of the claws may be two on the drive side where no thrust load is applied. Also, the thrust load is applied. More, for example, four, in the form of a cross may be provided on the work side), a groove 13 formed in the diameter direction at a position corresponding to the claw 12 on the front surface of the thrust clamp ring (see FIG. 4), The protrusions 14 projecting from both sides are fitted between the protrusions and in the groove, and the protrusions 14
And a locking piece 16 rotatably supported by a pin 15. The pawl 12 passes through a groove 17 of the roll neck portion 1, fits into an annular groove 18, slides, and moves within the range. Is an annular groove 18
It is regulated by a stopper bolt 19 embedded in the base. That is, the thrust clamp ring 5
After the claw 12 is pushed into the annular groove in alignment with the groove 17, the claw 12 can rotate to a position where the claw 12 hits the bolt 19. When the clamp ring 5 rotates to a position where the claw 12 comes into contact with the bolt 19, the clamp ring 5 moves forward in the axial direction (to the right in FIGS. 2 and 4) so that the claw 12
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. In the blind hole 20, a coil spring 21 and a rod 22 protruding by the action of the coil spring 21 and abutting against the bottom of the groove 13 are formed. 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 is engaged with a locking groove 23 formed on the front inner wall of the annular groove 18 at a position where the claw 12 hits the bolt 19. The thrust clamp ring 5 is prevented from rotating, that is, the adjust ring 4 is prevented from loosening.

FIG. 5 shows a rearrangement device for the roll chock 2. A support frame 27 is vertically provided on a base 26 which is supported so as to be able to advance and retreat toward a roll 25, and which advances or retreats by a pinion rack mechanism (not shown). A mounting frame 28 is attached to one side thereof and can be moved up and down by a pinion rack mechanism (not shown) provided separately from the above to adjust the position. 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 has a crank that rotates by a fixed amount about the axis of the roll 25, and is mounted so as to be adjustable in the radial direction of the crank according to the roll diameter. 25, a rod 31 which is supported so as to be able to move forward and backward and is switched between an advanced position and a retracted position by a hydraulic cylinder. Also 32
And a protruding piece 33 which is located between the two forks and pushes the end face on one side of the locking as an operation part.

On the other side of the support frame 27, support stands 35 are provided at upper and lower stages at regular intervals with the operating device 29 toward the roll, and each support stand 35 is elastically supported vertically by a leaf spring 37. Also, it is elastically supported by the spring 38 in the left-right direction. On each of them, a chock receiving base 36 is fixed so that the roll chock 2 can be supported.

The rolls 25 are supported on a roll support table as shown in FIG. 6 in two stages, and the distance C between the rolls is constant and constant even for rolls having different diameters as shown in FIG. The device 29 and the support 35 are also arranged at the same interval as the interval C. The present apparatus is configured as described above, and the rear end of the chocks in the roll is rearranged as follows.

With the table 26 advanced as shown in FIG. 5, the roll 25 is placed on the roll support table and the chock 2 is placed on the receiving table by crane operation. Chock 2
The receiving table 36 on which 1 is placed sinks by a required amount due to the bending of the leaf spring 37, and supports the roll. As described above, the rolls 25 are respectively supported in two upper and lower stages. Next, in each of the upper and lower operation devices 29, the rod 31 is switched to the forward position, the fork 32 clamps the projection 14, and the projection 33 pushes the locking piece 16 against the action of the coil spring 21. Remove from the stop groove 23. After the rod 31 is switched to the forward position, the rod 31 rotates by a predetermined amount due to the rotation of the crank, grips the projection 14 sandwiched between the forks 32, and holds the thrust clamp ring 5 together with the adjust ring 4 in FIG. Rotate a fixed amount counterclockwise. As a result, the adjust ring 4 and the thrust clamp ring 5 move to the left in FIG. 2 and release the pressure contact of the pawl 12 to the side wall of the annular groove to cause slack.

When the thrust clamp ring 5 is rotated by a predetermined amount and the pawl 12 is aligned with the groove 17, the table 26 in FIG. 5 is retracted to the left in the figure.
The chocks 2 mounted on the rolls 6 come off the roll necks 1 respectively. When the chock 2 is mounted on the roll neck 1, the table 26 is advanced in the opposite manner to the above, and the vertical position of the roll is adjusted to perform centering. Then, the rotation of the thrust clamp ring 5 is adjusted so that the claw 12 and the groove 17 are aligned. Thereafter, 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 shifted left and right,
The support 35 is displaced to the left and right by the bending of the spring 38, and the required amount is inserted to compensate for the shift. Next, the rod 31 is switched to the forward position, the projection 14 is clamped by the fork 32, and the projection 33 pushes the locking piece 16 into the annular groove.
Thereafter, the thrust clamp ring 5 is rotated by a fixed amount by the rotation of the rod 31, and when the pawl 12 is stopped by hitting the bolt 19, the locking piece 16 is fitted into the locking groove 23 and the rotation of the thrust clamp ring 5 is stopped. The tightened adjust ring 4 is prevented from loosening.

The roll chock 2 is mounted on the roll neck as described above.
Retreats leaving the roll chock 2 fixed to the roll neck.

[0023]

According to the roll chock of the present invention, the thrust is fixed by tightening the thrust clamp ring only by turning the thrust clamp ring by a predetermined amount until the pawl is locked by the stopper, and the locking piece is fitted into the locking groove to allow thrust. The rotation of the clamp ring is stopped, that is, the roll chock is prevented from loosening, and when the roll chock is removed, the fixing is released only by turning the thrust clamp ring in the opposite direction by a fixed amount,
There is no need to rotate the adjust ring or remove the through bolt by attaching the through bolt, and the chocks can be easily and quickly replaced.

In the case of a roll chock having projections projecting from both sides of the operating portion, the locking pieces are guided by the projections so that the movement is smooth, and the locking pieces can be prevented from being damaged. By providing the protruding piece at the intermediate portion, it is possible to grip the protruding portion and push the operation unit. According to the assembling apparatus provided with the operating device of the present invention, the above-mentioned roll chock can be mechanically fixed and released, and the chock assembling work can be labor-saving and efficient.

If the operating device is provided in two stages vertically at the same interval as the roll, and at least one of the operating device and the roll support can be moved up and down, the roll chock is simultaneously and simultaneously fixed to the upper and lower rolls, or The fixing can be released, and the present invention can be applied to rolls having different diameters. In addition, the provision of the movable chock receiving base allows the chock to be pulled out from the roll neck or inserted without depending on the crane operation.

[Brief description of the drawings]

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

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

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

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

FIG. 7 is a diagram showing a state when a protrusion is sandwiched between forks.

[Description of sign]

DESCRIPTION OF SYMBOLS 1 Roll neck part 2 Roll chock 4 Adjust ring 5 Thrust clamp ring 12 Claw 13 Groove 14 Protrusion part 16 Locking piece 17 Groove part 18 Annular groove 19 Stopper bolt 21 Coil spring 22 Rod 23 Lock groove 25 Roll 26 Rollers 28 Mounting frame 29 Operation Apparatus 31 Rod 32 Bifurcated 33 Projection 35 Support base 36 Chock receiving base

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B21B 31/02 B21B 31/10

Claims (8)

(57) [Claims] An annular thrust clamp ring fitted into an annular groove of a roll neck portion is provided on the ring so as to protrude from an inner periphery of the ring through a groove extending from a roll end to an annular groove of the roll neck portion. A claw which is slidably fitted in the annular groove, and which engages with a stopper provided in the annular groove when the thrust clamp ring is rotated by a predetermined amount in the annular groove. A locking piece that is urged to protrude and is fitted and locked in a locking groove formed in the annular groove when the thrust clamp ring is rotated until the pawl is locked by the stopper. The operating part is exposed to the outside, and the operating part that pushes the locking piece against the action of the spring is provided integrally, and the thrust clamp ring is further screwed into the roll chock, and the adjuster ring moves forward and backward in the roll axis direction by rotation. But one Chocks provided linked to. 2. The operating portion is exposed on the front surface of the thrust clamp ring, and the locking piece projects from the front surface of the thrust clamp ring and fits into a locking groove formed on a front inner wall of the annular groove. Roll chock. 3. The locking device according to claim 1, wherein 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 in a groove bottom of the annular groove or a rear inner wall of the annular groove. Roll chock. 4. The roll chock according to claim 2, wherein a protrusion is provided on the thrust clamp ring inside the operation portion. 5. The rearrangement device for roll chocks according to claim 2, wherein the projections are provided on both sides of the operation portion, and the rod is directed toward the front surface of the thrust clamp ring on the crank that can turn a fixed amount around the axis of the roll. A rearrangement device having an operating device attached so as to be able to advance and retreat, protruding from a rod tip, and having a bifurcated portion for holding the protruding portion and a protruding piece corresponding to an operating portion at an intermediate portion thereof. 6. The roll chock reassigning device according to claim 3, wherein a projection is provided on both sides of the operation unit, wherein the rod is provided along a circumferential surface of the thrust clamp ring on a crank that can turn a fixed amount around the axis of the roll. It is attached so that it can advance and retreat,
A rearrangement device including an operating device protruding from a rod tip and having a bifurcated portion for holding the protruding portion or a protruding piece corresponding to an operating portion at an intermediate portion thereof. 7. A pair of rolls are supported by a support table in two upper and lower stages with a constant center distance, and operating devices are provided in two upper and lower stages at the same interval, and at least one of the roll support table and the operating device is provided. The reordering device according to claim 5, wherein the repositioning device can be moved up and down and the vertical position can be adjusted. 8. A chock receiving stand for moving back and forth toward a roll, supporting the chocks, extracting the chocks from the roll neck portion, or inserting the chocks into the roll neck portion. The reassignment device according to claim 1.