JP3048832B2 - Two-stage rolling roll chock assembly 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 rolling mill for rolling a workpiece made of a metal material, and is used in a rolling mill.
The present invention relates to an apparatus for assembling a step rolling roll.

[0002]

2. Description of the Related Art Rolling rolls used in rolling mills are:
Typically, it includes a pair of upper and lower driving rolling rolls, and both ends of the upper and lower rolls are rotatably supported by chocks, respectively, and the upper right and left upper chocks supporting the upper roll are lower left and right supporting the lower roll. It is superposed and connected on a chock, and is assembled in a predetermined position of a rolling mill (usually a predetermined rolling roll stand) in such a unitized state. Many rolling mills employing such two-stage rolling rolls include a plurality of sets of the two-stage rolling rolls.

[0003] Since the roll surface of such a two-stage rolling roll wears out as it is used repeatedly, it is regularly taken out of the rolling mill in a state of a two-stage rolling roll unit, and is used for roll grinding and maintenance. The rolls are transported to the workplace, where each roll surface is ground, inspected, and lubricated with chock. Alternatively, disassembly, inspection, bearing replacement, and the like are performed as necessary.

[0004] The transfer to the workplace is typically carried out by placing wheels normally provided in the lower chock on rails leading to the workplace and running them.
Roll grinding work and maintenance work completed at the workplace 2
Each part of the step rolling roll is assembled again into a state of a two-step rolling roll unit, sent out along a rail to a standby area, and then assembled into a rolling mill.

[0005] The assembly of the separated two-stage rolling rolls is usually carried out by a manual operation with a slinger. First, the lower roll with both end shafts supported by the lower chock is moved together with the chock by a crane. The wheels are lifted and suspended on the rails, and the wheels of the lower chock are placed on the rails. Next, the upper roll with both end shafts supported by the upper chock is lifted by a crane, suspended on the lower roll on the rail, and the upper chock is stacked on the corresponding lower chock, and the upper and lower stacks are stacked. The chocks are connected to each other. Thereafter, the two-high rolling unit thus assembled is sent out to the waiting area along the rail. Alternatively, the work may be performed in a place other than the rail, and the assembled two-stage rolling roll unit may be transported by a crane and placed on the rail.

However, in the assembling work described above, at least one crane man who operates the crane is required, and the lower roll and the lower chock to be suspended are positioned near the rail or other storage area near the storage area such as the rail. In this case, at least one person is required to position the upper roll and the upper chock to be suspended or suspended with respect to the lower roll and the lower chock, and thus at least two workers are required.

Further, positioning of the lower roll and the lower chock with respect to the rails and the like, and positioning of the upper roll and the upper chock with respect to them, are heavy and generate a large inertial force. Therefore, it is extremely difficult and dangerous. Therefore, skill is required for the positioning operation. In the conventional technology, a roll chock changing device, a chock attaching / detaching device,
Apparatus for attaching / detaching a roll chock such as a roll exchanging apparatus, transporting / exchanging from a rolling mill to a roll maintenance shop (for example, “Transporting / detaching roll chock for a rolling mill”
200309), “Roll changing device (actually open flat 1-8)
No. 4803)), however, there was no chock assembling apparatus for assembling into the two-high rolling unit described above, and all the assembling was manually performed.

[0008]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a lower roll having both end shafts supported by a lower chock suspended from a predetermined place, and then to an upper roll having both end shafts supported by an upper chock. A two-stage roll roll chock assembling apparatus for hanging the upper stage chock on the lower stage chock and connecting the upper stage chock on the lower stage chock to assemble a two-stage roll.
Rolling roll assembly can be performed, and the crane man 1
It is an object of the present invention to provide a two-high rolling roll chock assembling apparatus that can be configured so that it can be implemented by only a person.

[0009]

According to the present invention, there is provided a two-roll rolling chock assembling apparatus according to the present invention, wherein when a lower roll chock is placed at a place other than a rail, the following is provided. I do. That is, the chocks respectively installed on both outer sides of the predetermined storage space for guiding the lower chock to be moved down along with the lower roll so as to be mounted on the predetermined storage space. A guide device and a first roll axis for guiding the suspended lower roll and lower chock in the lower roll rotation axis direction so as to guide the lower roll and the lower chock to a predetermined position on the predetermined place in the lower roll rotation axis direction. A direction guide device, and the predetermined place for guiding the descending movement of the upper roll so as to guide the suspended upper roll and the upper chock to be placed on the lower roll and the lower chock previously placed in the predetermined place; An upper roll guide device installed on both outer sides of the upper roll, and the upper roll is guided by the upper roll guide device. A second guide for guiding the upper roll and the upper chock in the direction of the upper roll rotation axis such that the upper chock suspended on the lower chock is placed at a predetermined position on the lower chock. And a roll axis direction guide device.

In the case of this chock assembling apparatus, a part of the first roll axial direction guide device may also serve as the second roll axial direction guide device. In addition, the first and second roll axis direction guide devices can be configured to be position adjustable in the roll axis direction so as to correspond to various lengths of the upper and lower rolls.

Further, in the two-roll rolling chock assembling apparatus according to the present invention for solving the above-mentioned problems, when the lower roll chock is placed on a rail, the lower roll whose both end shafts are supported by the lower chock with wheels is mounted at a predetermined assembly position. The wheels of the lower chock are placed on the rails laid down on the rails laid on the rails, and then the upper roll with both end shafts suspended above the lower rolls while the upper rolls supported by the upper chock are lifted off and the upper chock is removed. A two-stage rolling roll chock assembling apparatus for assembling a two-stage rolling roll by overlapping and connecting on the lower-stage chock, comprising:

That is, each of the lower chock wheels suspended along with the lower roll is placed on both outer sides of the rail for guiding the lower chock to move downward so that the wheel is placed on the rail. An installed chock guide device, and a first rail direction guide device for guiding the lower roll and the lower chock to be suspended in a rail longitudinal direction so as to guide them to a position on a predetermined rail in the rail longitudinal direction. The upper roll and the upper chock to be suspended are both guided on the lower roll and the lower chock, which are previously arranged at predetermined positions on the rail. An upper roll guide device installed on the outside, and the upper roll guide is guided by the upper roll guide device. A second rail direction guide for guiding the upper roll and the upper chock in the longitudinal direction of the rail such that the upper chock suspended on the lower chock is overlapped at a predetermined position on the lower chock. Device.

In this chock assembling apparatus, a part of the first rail direction guide device may also serve as the second rail direction guide device. Further, the first and second rail direction guide devices can be configured to be position-adjustable in the rail longitudinal direction so as to correspond to various lengths of the upper and lower rolls.

[0014] Further, a delivery device for delivering the two-high rolling roll assembled on the rail along the rail may be provided near the rail. In any of the above-mentioned chock assembling apparatuses, the above-mentioned chock guide device for guiding the downward movement of the lower chock, for example, reciprocates between a guide position for guiding the downward movement of the lower chock and a retreat position retracted therefrom. It is conceivable to have a movable guide member and its drive. In this case, it is conceivable that the drive section can move the guide member forward to an appropriate guide position in accordance with the size of the lower chock.

In any of the chock assembling apparatuses, the upper roll guide device may be, for example, a guide member capable of reciprocating between a guide position for guiding the downward movement of the upper roll and a retreat position retracted therefrom. And a drive unit for the same. As an example, a lower switch sensor such as a limit switch, a proximity switch, or the like provided on the guide member detects that the drive unit moves closer to the lower roll due to the advance of the guide member. It is conceivable that the guide member is stopped and its position is set as the upper roll guide position of the guide member. This utilizes the fact that the outer diameters of the upper and lower rolls in a two-high rolling roll are generally substantially equal. However, it is also conceivable to adopt a drive unit of another mode which can advance and position the guide member to an appropriate guide position according to the roll diameter.

Further, the first and second roll axial direction guiding devices in the chock assembling apparatus when the lower roll chock is located at a place other than the rail, and the chock assembling apparatus when the lower roll chock is located on the rail. As the first and second rail direction guide devices in the above, for example, any one of a suspended chock or (and) a combination of a roll and a chock such as a roll shaft end that may protrude therefrom A guide member for guiding the lowering movement of the roll and the chock by contacting the ends, and after the lowering movement of the combination of the roll and the chock, or together with the lowering movement, the drive unit drives the roll in the axial direction or the rail longitudinal direction. In the direction of the roll axis or the longitudinal direction of the rail. Those that lead to is considered. In this case, the guide member is retracted to the retracted position by the drive unit after the guide in the roll axis direction or the rail longitudinal direction.

Further, it is arranged from the beginning in a position where it can guide the descending movement of the roll and chock combination to a predetermined position in the roll axis direction or the rail longitudinal direction, or it is advanced to that position by a drive unit, A member including a guide member that can be retracted from that position is also conceivable. In any chock assembling device, each of the guide devices can be wired or wirelessly operated from the position of the crane man who operates the crane, thereby, and also for suspending the roll and chock combination,
By using the hanging tool operated by the crane man, assembling of the two-stage rolling roll can be performed by one crane man.

In the above-mentioned chock assembling apparatus in which the lower-stage roll chock storage area is a rail, when an assembling two-stage rolling roll delivery apparatus is employed, it is, for example, a piston-cylinder apparatus arranged along the rail between rails or the like. The piston rod may be provided with an engagement claw, and the engagement claw can selectively take a protruding position at which the engagement claw can engage with the chock or a retreat position retracted therefrom. As the rod reciprocating operation length, the entire two-stage rolling roll can be advanced a part of its length by projecting the piston rod in a state where the claw is engaged with the lower lower chock on the front side in the rail direction. With the retraction of the claw and the retraction of the piston rod, the claw is now engaged with the lower lower chock on the rear side, and in that state, Which can feed the rest of the 2-high rolling rolls by projecting the fine piston rod can be considered.

[0019]

According to the chock assembling apparatus of the present invention, after work such as inspection and maintenance, the assembled lower roll and lower chock are suspended by a crane and lowered onto a rail laid at a predetermined place or at a predetermined position. . At this time, the downward movement of the lower chock is guided by the chock guide device, and the chock is placed in a predetermined place or the wheels of the chock are placed on the rail. In this mounting, the lower roll and the lower chock are guided in the lower roll rotation axis direction by the first roll axial direction guide device or in the rail longitudinal direction by the first rail direction guide device. It is lowered to a predetermined position in the storage space or a predetermined position on the rail.

Next, the upper roll and the upper chock are hung by a crane and lowered onto the lower roll and the lower chock at the predetermined position. At this time, the downward movement of the upper roll is guided by the upper roll guide device, so that the upper roll and the upper chock are arranged on the lower roll and the lower chock, and the entire upper roll is guided by the second roll axial direction guide device. Each upper chock is overlapped and connected to the corresponding lower chock by being guided in the rotation axis direction of the roll or guided by the second rail direction guide device in the rail longitudinal direction.

The two-roll mill thus assembled is carried out by a crane when the place is other than a rail, and is sent out by a crane when the place is a rail or along the rail. Also, in that case, when the above-mentioned delivery device is provided, the delivery device is delivered along the rail. In the two-stage rolling roll chock assembly described above, the first and second roll axial direction guide devices may be configured to be position-adjustable in the rotation axis direction of the roll, or the first and second rail direction guide devices may be configured such that When the position is adjustable in the longitudinal direction of the rail, the position can be adjusted to correspond to various lengths of the upper and lower rolls.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of an embodiment, and FIG. 2 is a side view of the embodiment. FIG. 2 also shows a roll hanger. FIG. 3 is a front view of a part of the embodiment. The illustrated two-stage rolling roll chock assembling apparatus A includes a plurality of pairs of parallel paired rails 11 and 11 and 12 laid at predetermined assembly positions.
And 12 are provided. The lower roll 91 and the shafts 911 and 91 at both ends thereof after finishing the work such as roll grinding.
2 are suspended by a crane (not shown) using, for example, a suspending tool 10 as shown in FIG. 2 and guided by the chock assembling apparatus A to any one of the pair of rails (the illustrated example). Are mounted at predetermined positions on the rails 11 and 11). After that, the upper roll 94 and the upper chock 95, 96 supporting the shafts 941, 942 at both ends thereof are also suspended by a crane using the lifting device 10, and guided by the chock assembling apparatus A to lower the lower roll 91.
The upper chock 95, 96 is disposed on the lower chock 92, 93, and is connected to the lower chock 92, 93.

The hanging member 10 is supported by a horizontal frame 101 suspended by a crane (not shown), and a pair of movable frames 10 which can approach and separate from each other in the longitudinal direction.
2. The arm 103 has a hole that is suspended from each movable frame 102 and has a hole that can be fitted to the end shaft of the roll. The two-stage rolling roll chock assembling apparatus A includes two pairs of chock guides 21 and 22, 23 and 24 disposed on both outer sides of the outermost rails 11 among the rails. Between the rail direction guide device 3 and the chock guide device
It includes two pairs of upper roll guide devices 41 and 42, 43 and 44 which are installed on both outer sides of the rolls 1 and 11.

Each of the chock guide devices 21 to 24 has a plate-like guide member 25 having substantially the same shape, and as shown in FIG. 3, a vertical portion 251 parallel to the rail and an integrally continuous upper end thereof. It has an inclined portion 252 that is inclined upward and outward in a direction away from the rail. Each guide member 25
A synthetic resin sheet such as nylon is adhered as a cushion material to the surface (guide surface). Each guide member 25 is supported at the tip of each of two horizontal rods 26 in the vertical direction perpendicular to the rail, and the rod is supported by the chock guide device main body frame 27 so as to be able to advance and retreat in a direction perpendicular to the rail. In this state, the upper end of each guide member 25 is located slightly higher than the upper end of the lower chock when the lower chock guided by the member is placed on the rail.

The body frame 27 has a piston rod 28
A hydraulically operated piston cylinder device 28 of a type capable of arbitrarily determining and stopping the amount of protrusion is mounted horizontally and in a direction perpendicular to the rail, and the piston rod 281 is connected to the guide member 25. Each piston cylinder device 28 is connected by piping to a hydraulic circuit 29 (see FIG. 4) including a hydraulic pump, a control valve for controlling the flow of hydraulic oil, and the like.
The hydraulic circuit is controlled and operated based on an instruction from the control unit 30. The control unit 30 (see FIG. 4) itself is wirelessly operated by a crane man from an operation unit installed at a position of a crane man (not shown).

Thus, the guide member 25 of each of the chock guide devices 21 to 24 is provided with the lower chock 92 to be guided by it.
According to the dimensions of 93, it can advance to the guide position shown by the two-dot chain line in FIGS. 1 and 3 and stop at that position under the operation of the piston cylinder device 28 in accordance with the instruction from the control unit 30. The lowering chock 92, 93 is guided so that the wheel 921, 931 of the lower chock 92, 93 that is lowered is placed on the rail 11, 11. This guidance is smoothly performed by the provision of the inclined portion 252 in each guide member 25. When the role is completed, the user can return to the retracted position shown by the solid line in the figure.

When all the guide members 25 are located at the guide position, the vertical portions 251 and 2
The spacing between 51 is slightly larger than the outer dimension of the chocks 92 (93) guided by their opposing guide members in a direction perpendicular to the rail. The rail direction guide device 3 is provided with a plate-like tall guide member 31 which is integrally connected to a vertical portion 311 perpendicular to the rail and the upper end thereof, and moves upwardly and the chock guide device. And an inclined portion 312 that is inclined in a direction away from the main body. A synthetic resin sheet such as nylon is adhered as a cushion material to the surface (guide surface) of the guide member 31. The guide member 31 is supported by the tips of two upper and lower horizontal rods 32 parallel to the rail, and the rod is supported by the guide device main body frame 33 so as to be able to advance and retreat in the rail longitudinal direction. In this state, the upper end of the guide member 31 is located slightly above the end on the guide member side of the two-stage rolling roll assembled on the rail.

A hydraulically operated piston cylinder device 34 is mounted on the main frame 33 horizontally in the longitudinal direction of the rail, and its piston rod 341 is connected to the guide member 31. The piston-cylinder device 34 is of a type capable of arbitrarily determining the amount of protrusion of the piston rod and stopping the piston rod, and is connected to the hydraulic circuit 29.

The rail direction guide device 3 is mounted on four rails 361 on the base 36 as a whole.
The position adjustment is performed by a pair of hydraulically operated piston cylinder devices 37, 37 connected to the base 36 and the main body frame 33 of the device 3. Will be This device 37 is also of a type capable of stopping the piston rod by arbitrarily determining the amount of protrusion of the piston rod.

Thus, the rail direction guiding device 3 is
Piston cylinder devices 37, 37 according to instructions from 0
Is set to an appropriate position in accordance with the length of the upper and lower rolls of the two-rolling roll to be assembled from now on. The rail direction guide device 3 is placed at a predetermined initial position, and the piston rod 341 of the piston cylinder device 34 for driving the guide member 31 is retracted. Therefore, the guide member 31 is retracted as shown by a solid line in FIGS. In this state, the lower end of the lower roll 91 and the lower chocks 92 and 93 (the roll end shaft 912 in this example) which are suspended and lowered while contacting the guide member 31 are lowered. The downward movement of the roll and the lower chock is guided in the rail longitudinal direction. This guidance is performed smoothly by providing the inclined portion 312 on the guide member 31. In addition, the guide member 31 advances the lower roll 91 and the lower chock 92, 93 placed on the rails 11, 11 under the guidance of the piston cylinder device 34 in accordance with the instruction from the control unit 30. Then, the guide can be guided to a predetermined position on the rail. The guide member 31 is placed in this position until the next upper roll 94 and upper chocks 95 and 96 are assembled, and then retracts to the initial position.

Each of the upper roll guide devices 41 to 44 is provided with a tall plate-like guide member 45, which is a vertical portion 451 parallel to the rail as shown in FIG. And an inclined portion 452 inclined upward and outside the rail. Each of the guide members 45 has a synthetic resin sheet such as nylon adhered thereon as a surface (guide surface) cushion material. Each member 45 is supported by the tips of upper and lower horizontal rods 46, 46 in a direction perpendicular to the longitudinal direction of the rail.
7 is supported so as to be able to advance and retreat at right angles to the rail. A hydraulically operated piston cylinder device 48 is mounted on the main body frame 47 at right angles to the rail and horizontally, and the piston rod 481 is connected to the guide member 45.

The piston cylinder device 48 is of a type which can stop the piston rod by arbitrarily determining the amount of protrusion of the piston rod, and is connected to the hydraulic circuit 29 by piping. Each guide member 4
5 is provided with a limit switch LS as a lower roll sensor, and the detection of the lower roll by this switch is input to the control unit 30. The upper roll guide devices 41 to 41
According to 44, after the lower roll 91 and the lower bearing devices 92, 93 are placed at predetermined positions on the rails 11, 11, the guide devices 41 to 44 are transmitted to the control unit 30 by wireless operation from the operation unit at the crane man position. Is started, the piston rod 481 of the piston cylinder device 48 of each guide device starts to protrude from the retracted position shown by a solid line in FIGS. 1 and 3, and the guide member 45 advances accordingly,
When the limit switch LS contacts the lower roll 91 immediately before the member itself contacts the lower roll 91, the advance of the piston rod 481 and the guide member 45 is stopped.

In this state, the upper roll 94 is suspended by a crane together with the upper chocks 95 and 96, and
Is lowered between the two pairs of guide members 45 and 45, 45 and 45, the downward movement of the upper roll 94 is guided by these guide members, and the upper roll 94 and the upper chock 95, 96 become the lower roll 91 and the lower chock. Guided on 92,93. This guidance is performed smoothly because each guide member 45 has the inclined portion 452.

At this time, one end (the roll end shaft 942 in this example) of the upper roll 94 and the upper chocks 95, 96 has been advanced to the projecting position and has not yet been retracted. It descends while abutting on the upper part of the guide member 31 of the device 3, whereby it is also guided in the longitudinal direction of the rail, and finally the upper tiers 95, 96 are stacked and connected on the corresponding lower tiers 92, 93.
This connection is performed by, for example, fitting a recess (or projection) formed on the lower surface of the upper chock into a projection (or recess) formed on the upper surface of the lower chock in advance.

When the assembling of the two-stage rolling roll is completed in this way, all the guide members are retracted to the retracted position according to an instruction from the crane man. The assembling apparatus A described above is further provided with a delivery device 5 for delivering the assembled two-stage rolling roll. The delivery device 5 is provided between the innermost rails 12 and 12 and includes a hydraulically operated piston cylinder device 51 installed along the longitudinal direction of the rails. The device 51 projects the piston rod 511 by a predetermined amount or retreats by the same amount. The device 51 is connected to the hydraulic circuit 29 by a pipe, and operates according to an instruction from the control unit 30. At the tip of the rod 511, an air cylinder 52 and an engaging claw 53 driven by the air cylinder 52 are mounted. When the engaging claw 53 projects, it takes a position where it can engage with the lower chock. The air cylinder 52 is connected to the pneumatic circuit 31 by piping, and the circuit 31 is controlled and operated by the control unit 30 instructed by a crane man. The piston rod stroke (projection amount) of the piston cylinder device 51 is set so that the two-stage rolling roll can be pushed out from a substantially half-assembled position.

That is, initially, the piston rod 511 is retracted, and in this state, the engaging claw 53 is projected by driving the air cylinder 52, and then the piston rod 51
By projecting 1, the claw 53 is engaged with the lower-side chock 92 on the front side, and the entire two-stage rolling roll can be pushed out along the rails 11, approximately half. after that,
After the claw 53 is retracted and the rod 511 is retracted to the initial position, the claw 53 is again projected, and when the rod 511 is projected, the claw 53 is engaged with the lower lower chock 93 on the rear side, thereby performing two-stage rolling. The rest of the roll is pushed forward.

The above-described two-stage rolling roll chock assembling apparatus A is a case where the lower chock is placed on a rail.
The chock assembly may be performed in a place other than the rail, and even in such a case, the chock assembly can be performed using the device A. At that time, the lower chock guide devices 21 to 24 and the upper roll guide devices 41 to 41 are provided on both sides of the predetermined storage space.
The rail direction guide device 3 may be installed as a roll axis direction guide device at a position facing the one end of the predetermined storage space while disposing the 44. The roll axis direction guide device 3 is used to guide the lower roll 91 and the lower chock 92, 93 to a predetermined position in the storage space in the rotation axis direction of the roll, and the upper roll 94 and the upper chock 9
5, 96 are used to guide the upper chock 95, 96 on the lower chock 92, 93 by guiding them in the axial direction of the roll. Such a state of arrangement of each part when the storage place is other than the rail is substantially the same as a state where the rail is removed from the device A installed in relation to the rail. Therefore, the operation of assembling the two-high rolling roll chock by the apparatus A in this case is substantially the same as the case where the rail is present. However, as for the guide member 31 in the roll axis direction guide device 3, it is difficult to push the lower chock 92, 93 forward after the lower chock 92, 93 is placed in the predetermined place to the predetermined position in the place, or If it is not possible, the guide member 31 may be set at a predetermined guide position from the beginning. When the assembling of the two-high rolling roll is completed, it is carried out by a crane after all the guide members have retreated to the retracted position.

According to the above-described chock assembling apparatus A, assembling of the two-stage rolling roll can be carried out simply, reliably and safely, and can be carried out by only one crane man.

[0039]

According to the present invention, the lower roll whose both end shafts are supported by the lower chock is suspended and placed on a predetermined storage area, and then the upper roll whose both end shafts are supported by the upper chock is moved to the lower stage. A two-stage roll-chock assembling device for assembling a two-stage roll by suspending and lowering the upper-stage chock on the lower-stage chock, and assembling the two-stage roll in a simple, reliable and safe manner. It is possible to provide a two-stage rolling roll chock assembling apparatus which can be implemented by one crane man alone.

A part of the first roll axial direction guide device also serves as the second roll axial direction guide device, and a part of the first rail direction guide device also serves as the second rail direction guide device. At times, the device configuration and operation are simplified accordingly. The first and second roll axis direction guide devices are capable of adjusting the position in the rotation axis direction of the rolling roll,
When the position of the first and second rail direction guide devices is adjustable in the rail longitudinal direction, the position of the guide devices can be adjusted according to the length of the rolling roll.

When a delivery device for delivering the two-stage rolling roll assembled on the rail along the rail is provided, the two-stage rolling roll can be easily delivered by this.

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment of the present invention.

FIG. 2 is a side view of the embodiment shown in FIG. 1 together with a roll hanger.

FIG. 3 is a front view of a part of the embodiment shown in FIG. 1;

FIG. 4 is a diagram schematically illustrating a control circuit according to the embodiment of FIG. 1;

[Explanation of symbols]

 A Two-stage rolling roll chock assembling device 11, 12 Rail 21, 22, 23, 24 Chock guide device 25 Guide member 251 Vertical portion 252 Inclined portion 26 Support rod 27 Guide device main frame 28 Piston cylinder device 281 Piston rod 29 Hydraulic circuit 30 Control Part 31 Pneumatic circuit 3 Rail direction guide device (Roll axis direction guide device) 31 Guide member 311 Vertical portion 312 Inclined portion 32 Support rod 33 Guide device body frame 34 Piston cylinder device 341 Piston rod 36 Base 37 Piston cylinder device 41, 42 , 43, 44 Upper roll guide device 45 Guide member 451 Vertical portion 452 Inclined portion 46 Support rod 47 Guide device body frame 48 Piston cylinder device 481 Piston rod 5 Delivery device 51 Piston syringe Device 511 the piston rod 52 the air cylinder unit 53 engaging pawl 91 top rolling rolls 92, 93 lower chocks 921 and 931 wheel 94 top rolling rolls 95 and 96 upper chocks

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hiroyuki Doi 5-3-1 Tokai-cho, Tokai-shi, Aichi Prefecture Inside Nippon Steel Corporation Nagoya Works (72) Inventor Teruo Yokokura 5-chome, Tokai-cho, Tokai-city, Aichi Prefecture 3 Nippon Steel Corporation Nagoya Works (72) Inventor Kunio Takano 5-3-1 Tokai-cho, Tokai-shi, Aichi Prefecture Taihei Kogyo Co., Ltd., Tokai Branch (56) References JP-A-52-47520 (JP) JP-A-50-87131 (JP, A) JP-A-7-60319 (JP, A) JP-A-6-304617 (JP, A) JP-A-5-123719 (JP, A) 5-115905 (JP, A) JP-A-5-23721 (JP, A) JP-A-6-19905 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21B 31/10

Claims (5)

(57) [Claims] 1. A lower roll whose both end shafts are supported by a lower chock with wheels is hung on a rail laid at a predetermined assembly position, and wheels of the lower chock are placed on the rail. A two-stage roll roll chock assembling device for hanging an upper stage roll supported by an upper stage chock above the lower stage roll and overlapping and connecting the upper stage chock onto the lower stage chock to assemble a two-stage roll. Chock guide devices respectively installed on both outer sides of the rails for guiding the downward movement of the lower chock so that the wheels of the lower chock suspended with the lower roll are placed on the rail. And lower the lower roll and the lower chock to be guided to a position on a predetermined rail in the longitudinal direction of the rail. A first rail direction guide device for guiding the upper roll and the upper chock to be guided in the longitudinal direction of the lower rail and the lower chock which are first arranged at predetermined positions on the rail. An upper roll guide device installed on both outer sides of the rail for guiding the downward movement of the upper roll, and suspending the upper roll by guiding the upper roll by the upper roll guide device. A second rail direction guide device for guiding the upper roll and the upper chock in the longitudinal direction of the rail so that the upper chock coming in is overlapped with a predetermined position on the lower chock. Roll-chock assembly device. 2. The two-stage roll-chock assembling apparatus according to claim 1, wherein a part of said first rail direction guide device also functions as said second rail direction guide device. 3. The two-stage rolling roll chock assembling apparatus according to claim 1, wherein the first and second rail direction guide devices are position-adjustable in the longitudinal direction of the rail. 4. The two-stage rolling roll chock assembling apparatus according to claim 1, wherein a feeding device for feeding the two-stage rolling roll assembled on the rail along the rail is provided near the rail. . 5. A lower roll whose both end shafts are supported by a lower chock is suspended and placed on a predetermined place, and then an upper roll whose both end shafts are supported by an upper chock is suspended above the lower roll. A two-stage rolling roll chock assembling apparatus for assembling a two-stage rolling roll by stacking and connecting the upper-stage chock on the lower-stage chock, wherein each of the lower-stage chockes suspended along with the lower-stage roll is placed in the predetermined place. Chock guiding devices respectively installed on both outer sides of the predetermined storage space for guiding the lower chock to move downward, and the lower roll and the lower chock to be suspended are moved in the lower roll rotation axis direction. A first roll axis direction for guiding them in a lower roll rotation axis direction so as to guide them to a predetermined position on the predetermined storage space; A guide device, and the predetermined storage space for guiding the downward movement of the upper roll so as to guide the suspended upper roll and the upper chock to be placed on the lower roll and the lower chock that are first placed in the predetermined storage space. An upper roll guide device installed on each of the outer sides, and the upper chock suspended on the lower chock by being guided by the upper roll by the upper roll guide device is at a predetermined position on the lower chock. A two-stage roll roll chock assembling device, comprising: a second roll axial direction guide device for guiding the upper roll and the upper chock in the rotation direction of the upper roll so as to be superposed.