KR20030094706A - Automatic clamping and unclamping device for back up roll autoclamp - Google Patents

Abstract

PURPOSE: An apparatus for automatically clamping and unclamping automatic clamp for back up roll is provided to easily separate and connect the clamp and substantially reduce danger of safety accident by installing a supplementary equipment for rotationally supporting the clamp when separating or connecting heavy clamp from or to chock. CONSTITUTION: The apparatus comprises a plate(92) installed in such a way that the plate is moved along rails(94); a pair of shafts(82) arranged on an upper surface of the plate(92); an operation table(74) installed in such a way that the operation table(74) is moved along the shafts(82) by back and forth moving cylinder(80); a fixed base(73) arranged in such a way that the fixed base(73) is vertically moved by lowerable and liftable cylinder(70) fixed to the operation table(74); a housing fixed to an upper surface of the fixed base(73); a central part ring bar fixed to a front surface of the housing; a cylinder(50) fixed to an inner circumference of the central part ring bar; and a link(52) comprising a plurality of clamp bars(54) connected to the cylinder(50), extended to a head part of the back up roll and elastically clamped to fixed pad of the head part.

Description

AUTOMATIC CLAMPING AND UNCLAMPING DEVICE FOR BACK UP ROLL AUTOCLAMP}

The present invention relates to an autoclamp automatic desorption apparatus for a backup roll, which is improved to easily and safely disassemble and assemble a clamp for a high load backup roll used in a rolling facility.

In general, as shown in Figure 1, the rolling rolls used in the rolling field of steel mills are coupled with a driving bearing at the bottom of the rolling roll of the rolling stand for driving the rolling roll, and the choke 101 surrounding the driving bearing is provided. The clamp 103 is fastened to prevent separation of the driving bearing during the rolling operation, and a backup roll 100 which is simultaneously driven while contact-pressurizing the rolling roll is provided.

The back-up roll 100 of such a structure is to increase the fatigue and poor shape and roundness of the back-up roll 100 after the operation of the cumulative tonnage of about 10 to 150,000, the grinding work to correct this is performed, grinding Since the work is not possible in the state assembled in the rolling equipment is moved to the choke machine from the rolling stand to work after disassembling the additionally coupled devices and choke 101.

However, in the related art, when disassembling or fastening the choke 101 and the clamp 103 in the backup roll 100, two or more workers had to manually fasten or disassemble the high load clamp 103, thereby reducing work efficiency. Of course, the risk of safety accidents was very high.

The present invention has been made in view of the above-described problems of the prior art, and has been created to solve the above problem, and by providing an additional facility capable of rotatably supporting the clamp of a heavy clamp when detaching or tightening the clamp, It is an object of the present invention to provide an automatic clamp auto-removable device for a backup roll for disassembling and fastening work and significantly reducing the risk of a safety accident.

1 is an exemplary view showing a process of mounting a clamp on a conventional backup roll,

2 is an external perspective view of the device of the present invention;

3 is a perspective view illustrating main parts of an autoclamp and a head support table constituting the present invention device;

4 is an exploded perspective view showing a drive unit constituting the present invention device;

5 is an operating state of the device of the present invention,

6 is a sectional view of the main parts of FIG. 5;

Explanation of symbols on the main parts of the drawings

10: auto clamp 21: guide roller

22: Table 32: Rotating Gear

34: torque motor 40: center ring bar

54: clamp bar 64: fixed pad

90: drive motor 92: plate

The above object of the present invention is a plate movably installed along a rail; A pair of shafts disposed on the upper surface of the plate; An operation table movably installed by the forward and backward cylinder along the shaft; A fixed base disposed to be movable by a lifting cylinder fixed to the operation table; A housing fixed to an upper surface of the fixed base; A center ring bar fixed to the front end surface of the housing; A cylinder fixed to an inner circumference of the center ring bar; Providing an auto-clamp automatic demounting device for a backup roll comprising a link extending to the cylinder and extending toward the head of the backup roll and having a plurality of clamp bars elastically fastened to the fixed pad of the head. Is achieved.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is an external perspective view of the mounting device according to the invention, Figure 3 is a perspective view of the main part showing a table for supporting the auto clamp and the head portion constituting the mounting device according to the present invention.

According to FIGS. 2 and 3, the auto clamp 10 is a disc-shaped member, and four clamps 12b having an arc shape on the inner circumferential surface thereof are arranged at intervals of 90 degrees, and the middle of the clamp 12b and the clamp 12b. The key groove 13 is formed at the point.

One side of the auto clamp 10 is formed with a bolt hole 14 is coupled to the inner and outer parts, the safety pin 11 has been touched by the fixing pad 64 to be described later with a spring from the inside of the auto clamp 10 When it is configured to go inside.

The round table 22 supporting the auto clamp 10 is fixed to the plate 92 by welding the cylinder 20 to the plate 92 according to the outer diameter of the backup roll 100.

In addition, two guide rollers 21 are installed at the upper end of the cylinder 20 to allow the auto clamp 10 to rotate, and the bearings 21a are coupled to both ends thereof to maintain smooth rotation. The fixing block 23 is provided to prevent the detachment of 21a.

As shown in FIG. 4, the head part 60 is fixed to the rotary gear 32 on one side of the shaft 30, and the torque motor 34 is fixed on the outer circumferential surface of the housing 31 by the fixing holder 72. It is fixed, the gear 33 is keyed to the shaft of the torque motor 34 is engaged with the rotary gear 32.

In addition, four bolt holes 35 are processed in the face plate of the rotary gear 32 to be penetrated through the bolt hole 41 by the central ring bar 40 and the connection bolts 42.

In addition, a cylinder penetrates the center of the center ring bar 40 through which a circle 50 is manipulated to operate the link 52, and the cylinder 50 is fastened to the bolt hole 43 by a cylinder connecting bolt 51. do.

The links 52 are welded with the shaft of the cylinder 50 so that the clamp bars 54 have elasticity, and four are formed at 90 °.

The clamp bar 54 is connected to the link 52 by the pin 53 and is inserted into the link groove 61 of the head part 60 to have elasticity.

In addition, four fixing pads 64 are attached to the head part 60, and the springs 63 are pad connection bolts 66 so that the fixing pad 64 can be pushed when the safety pin 11 of the auto clamp 10 is touched. ) Into the roll 62.

As shown in FIG. 5, a rail 94 and a driving roller 93 are installed at a lower portion of the plate 92 so as to move the table 22 by manufacturing a quadrangular plate 92. Both sides are attached to the wheel 91 that can move along the drive motor (90).

Meanwhile, two shafts 82 are installed at the upper end of the plate 92, and four stoppers 81a and 81b are welded to the end of the shaft 82 as shown in FIG. This prevents the departure.

In addition, the front and rear cylinders 80 are installed in the central groove portion of the plate 92 so that the head portion 60 can be advanced back and forth smoothly, the link shaft 83 fixed to the lower surface of the operation table 74 ).

In addition, the lifting cylinder 70 is fixed to the center of the upper surface of the operation table 74, the fixed base 73 as shown in Figure 2 is fixed to the rod end of the lifting cylinder 70, the fixed base ( 73 is installed to be guided up and down by the guide post 71 placed in the upper edge of the operation table (74).

The operating relationship of the present invention made of such a configuration is as follows.

Take out the back-up roll 100 in use in the rolling stand to move the seat by moving the rope to the back-up roll assembly with a crane.

The seated backup roll 100 is first moved forward in the direction of the auto clamp while the operator releases the bolt fastened to the choke 101 while the backup roll clamp automatic loading and detaching device is operated .

Then, by the operator's operation, the round table 22 moves to just under the auto clamp 10, and when the movement is completed, the cylinder 20 is lifted up to be firmly in close contact with the center of the auto clamp 10. Will be supported .

As described above, when the round table 22 is in close contact with the auto clamp 10, the lifting cylinder 70 of the head 60 is raised to form the head 60 and the auto clamp 10 coaxially. The forward and backward cylinder 80 is operated to move the head portion 60 to the auto clamp 10 so that the head portion 60 and the clamp bar 54 are inserted into the clamp bar hole 12a of the auto clamp 10.

At this time, the fixing pad 64 presses the safety pin 11 of the auto clamp 10 to release the fixing force of the auto clamp 10.

When the insertion is complete, the cylinder 50 is advanced and thus only the end of the clamp bar 54 is pulled up while the link 52 is pulled back.

When the clamp bar 54 is raised upward, the clamp 12b of the auto clamp 10 is pushed backward so that the auto clamp 10 is unclamped on the backup roll 100.

As such, when the auto clamp 10 is dismantled, the operator operates the backup roll 100 de-choking machine, separates the choke 101 from the backup roll 100, transfers it to the workshop through a crane, and performs maintenance work. In addition, the decomposed backup roll 100 is transferred to a grinder to grind in the grinder.

At this time, the separated auto clamp 10 is located on the round table 22.

Polishing is completed, the back-up roll 100 and the maintenance choke 101 is combined again, the back-up roll 100 is assembled by the de-choking machine in the reverse order of disassembly.

When the assembly of the choke 101 is completed, the demounting device is operated again, and the forward and backward cylinder 80 is operated so that the head part 60 is recombined with the auto clamp 10 loaded on the round table 22.

The combined autoclamp 10 is operated by the torque motor 34 for adjusting the key groove so that the key portion of the backup roll 100 and the key groove 13 portion of the auto clamp 10 are operated to engage with the rotary gear 32 and the same. Operated through the gears 33, they coincide with each other.

When the keys are matched, the driving motor 90 is operated while the plate 92 is driven by the driving roller 93 and the wheel 91 is rotated on the rail 94 to move in the axial direction of the backup roll 100 so that the auto clamp ( 10) and the portion of the clamp hole ('102' in FIGS. 1 and 6) of the backup roll 100, the cylinder 50 of the head portion 60 is reversed and the link 52 is advanced accordingly to the clamp bar As the 54 is down, the auto clamp 10 is clamped to the backup roll 100 shaft by the clamp 12b.

In addition, when the head 60 is reversed, the fixing pad 64 holding the safety pin 11 is spaced apart, and the safety pin 11 is firmly fixed to the clamp 12 by the spring 63 .

As described above, when the auto clamp 10 is clamped to the backup roll 100 is firmly fixed by the key portion.

Thereafter, the elevating cylinder 70 is down, and the head portion 60 is returned to its original position, and the plate 92, which has been advanced, is reversed in the reverse order and waits for the next operation.

As described in detail above, according to the present invention, as the operator manually tightens the heavy weight clamp, it is possible to prevent the accident due to the clamp loosening in the stand in advance, and more safely to work alone.

Claims (3)

A plate 92 movably installed along the rail 94; A pair of shafts 82 disposed on an upper surface of the plate 92; An operation table (74) movably installed by the forward and backward cylinder (80) along the shaft (82); A fixed base 73 disposed so as to be movable by a lifting cylinder 70 fixed to the operation table 74; A housing 31 fixed to an upper surface of the fixed base 73; A center ring bar 40 fixed to the front end surface of the housing 31; A cylinder 50 fixed to an inner circumference of the central ring bar 40; A plurality of clamp bars 54 connected to the cylinder 50 and extending toward the head part 60 of the backup roll 100 and elastically fastened to the fixing pad 64 of the head part 60. Autoclamp automatic loading and detaching device for a backup roll, characterized in that comprises a link (52). According to claim 1, wherein the rotating gear 32 is rotatably fixed to the shaft 30 of the housing 31, A portion of the outer circumferential surface of the rotary gear 32 is provided with a torque motor 34 for operatively connecting the gear 33 engaged with the rotary gear 32, Auto-clamp automatic loading and detaching device for a back-up roll, characterized in that the rounded table 22 for rotatably supporting the head portion 60 is installed on the upper end side of the backing roll (60) side of the plate (92). According to claim 2, The table 22 is installed to be adjustable in height in the vertical direction, Auto-clamp automatic loading and detaching device for a backup roll, characterized in that the inner peripheral surface is provided with a pair of guide rollers 21 in contact with the outer peripheral surface of the head portion (60).