JPS5857258B2 - Lifting Souchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a carriage orientation and lifting device 1 for a twin belt continuous casting machine.

Such twin-belt casters use a pair of thin, wide, endless metal belts forming the upper and lower casting surfaces of the casting zone.

These belts rotate around cantilevered upper and lower carriages.

It is often necessary to disassemble these carriages to replace casting belts, or to replace edge frames, and to repair carriages and rolls, as well as for periodic inspections. For example, U.S. Pat. -235, No. 2904
No. 860, No. 303.634-8, No. 3041686
No., No. 3123874, No. 3142873, No. 31
．． No. 67830, No. 3228072 and No. 33108
A twin-bell continuous casting machine like No. 49 No. 1 shown here has been around for a long time.

Over time, the operating requirements for these twin-belt casting machines have become much more demanding.

This is because it is desired to manufacture large, thick castings with extremely high precision.

Therefore, there is currently a demand for a casting machine + ship to supply a large amount of molten metal over a period of about 4 hours of operation.

A number of features of the present invention include the provision of very wide and large cast belt carriages in exactly parallel relation to each other, and the upper carriage being raised a considerable distance upward while maintaining parallel relation to the other carriages. There is one thing I have done to improve my ability.

Riff 1~ which is effectively a parallelogram that lifts the upper carriage
This allows the carriage to be separated as desired and the lower carriage to be rigidly attached to the main chassis frame without having to compete with other functions.

The driven roll is vertical and curved cylindrical segment is caster back 1
The radius of curvature of this engaged and curved safety member 1- plus the radius of the driven roll is equal to one lift arm length between the fulcrum and the pivot connection with the upper carriage.

Therefore, parallelism can be maintained without the complexity of a fourth companion link and associated pivot.

As a result, a substantial amount of vertical lift is given to the equipment and large casting healds can be removed from the casting machine allowing large mold sizes.

For example, in the described embodiment, the basement has a width of up to 100 inches and a width of 116 inches.
95 m) or more - L, and a belt casting space r (17') slightly larger than these dimensions is devised to provide 17'.

The vertical lift structure of the upper carriage also reduces the "descent time"
Equipment for accurately and often changing casting dimensions 1
Casting belts, depending on the size of the casting machine
Easy to change the frame, tundish, nose piece and nozzle assembly.

The large gap between the carriages created by raising the upper carriage one tenth is extremely advantageous in providing easy access for personnel to the machine for necessary inspection, maintenance and repairs.

In the continuous casting machine 1 illustrated as an embodiment of the present invention,
Spread the molten metal upwards and -F direction endless, flexible casting bell 1~1
0) at the upper end of the casting machine between 2 and 14 is the implant l
-j supply.

The molten metal is placed in the casting zone C (FIGS. 2 and 5) defined by the parallel surface gaps of the upper and lower casting bells 12 and 14.

The two casting belts 12 and 14 are supported and driven by upper and lower belt carriages, indicated by U and ■ in FIGS. 1.2 and 4, respectively.

The upper carriage carries two main rolls 16 and 1 (second
), around which the casting belt 12 rotates once in the direction of the arrow.

The roll 16 near the input end of the casting machine is called the T-side roll, and the other roll i8 is called the -F-side roll.

At the same time, the lower carriage L is the main upper and lower roll 2
0 and 22 and around them a lower casting belt 14
rotates.

A carriage L protrudes from a chassis 24 (FIGS. 2 and 4) that tilts at various casting angles.

In order to adjust the inclination of this chassis 24 appropriately, it requires two pivot connectors and an adjustment link.
It is attached to the bottom 261 of the casting machine by a single point support.

The two pivot connections 28 and 30 are located at the lower end 1 of the casting machine.
One adjustment link 21 is provided near the upper end.

This link is fixed at pivots 31 and 32, but can be removed and replaced with a longer link if it is desired to increase the slope or vice versa.

1.2 and 3. As shown in Figures 1 and 2, the base beams 34 and 36, which extend parallel to each other with a gap in the horizontal direction, are both bolted together to form the rest of the casting machine. They form an integrated horizontal support unit B.

This support unit 1-B is generally 1, lower carriage L
There are two base beams 34 and 36 extending below the caster and extending outwardly of the caster.

Chassis frame 24, carriage U and L base 2
6 and the above-mentioned pivot support which can be tilted to an arbitrary casting angle in an alignment relationship 1, and are attached to the base 261.

This chassis frame 24 forms the main chassis of the casting machine so that it can be distinguished in a strict sense from the base support unit I-B.

A rigid upright box frame 38 is attached to one surface 1 of the chassis 24.
It is tightened tightly with bolts.

This box frame 3 constitutes the upright back (2) of the casting machine,
At its upper end 1 there are two uprights 41 and 43 which support the lift arm 40 with a pivot pin assembly at its fulcrum 42 (FIG. 5).

As shown in FIG. 5, the box frame 38 has a horizontal stiffener 46 and a vertical lift support member 4 between them.
Vertical front and rear plates 44 and 4 having a pair of upright end plates 4γ and 48 (Figures 2 and 3) in which 1 and 43 are parfocaled.
5 and 7.

The lift arm 40 has two fluid motion cylinders - 50 and 51.
The piston rods 52 of these cylinders are rotatably attached at 53 to a bracket 54 fixed to the rear plate 45 of the box frame 38.

The cylinders 50 and 51 each have a trunnion attached to the rear end of the lift arm 40 so that the cylinder 561 can rotate freely.

The upper carriage U has a lower shift assembly 61 provided with one outer pot of the lift arm 40, and one front end of the lift arm 40 is rotatably mounted thereon.

This lift arm has a thick ab section near the pivot 42 that tapers at both ends, which
In FIG. 5, there is a stone wall, and a top plate 5γ is fixed between bottom plates 58 and 59 by a vertical web.

While adjusting the direction of f to keep it parallel to the lower carriage L1, move the upper carriage up and down.
In fact, we have modified the parallelogram lift 60 as shown in Figures 5 and 6.

The rear part 38 of the casting machine forms a parallelogram link 1 which is pivoted by the central part 42 of the lift arm 40 and this rift.
- The front part of the arm forms the second link 2.

Upper carriage U has an inwardly facing vertical frame structure 62 depending from a pivot shift assembly 61;
In general, one side of the belt support part is supported by a vertical part 62, as shown by 63 in FIG.

Thus, as shown in FIGS. 5 and 7, the upper carriage is L-shaped or dogleg-shaped.

The third link is formed by the vertical dogleg portion 62 of the upper carriage upon which the bracket member 66.6γ (FIG. 8) and the roll 65 are mounted.

The fourth link appears to be a link with two other pivots, X and Y, which appear to be pivots, as shown by the broken line in FIG.

In fact, since there is no link connection between the pair of links at the pivot points X and Y, these are apparently called pivots.

This apparent fourth link and pivot l-X and Y is a convex bolted front plate of the vertical rear part 38 to a curved cylindrical safety member 1 64 and inside the vertical frame structure 62 of the upper carriage. The driven port 651 attached by attaching the S members 66 and 6γ (FIG. 8) to the plate 681 can be seen here.

A roll 65 is mounted on the upper carriage near the elbow of an L-shaped frame structure formed by an upright frame member 62 and carries a belt on one side that supports section 63.

Radius and roll of convex curved cylindrical segment 65
The sum of the zero radius is the pivots 42 and 61 in the front of the lift arm.
(i.e., the length of the upper link 2 is equal to 1).

The axis of the cylindrical segment 64, ie, the center of the curved surface, is apparently provided with a pivot X1, and the pivot assembly 61
It extends parallel to one axis of the fulcrum, and also extends from a pivot 1 parallel to the pivot member 61 to one axis of the fulcrum.

1 length (the length of link 1), pivoted from axis X]
・Distance to the axis of 42 (which is the length of link 3) Roll 6
The distance between the axis Y of 5 and the axis of pivot 61 is equal to 1.

Although a curved septum 1-64 is shown here, which is exactly one cylindrical, a segment 4 having a surface close to the desired shape, such as one cylindrical or round, can also be used to reduce operating costs.

The reason why something like this can be applied is that when the upper carriage is lowered by one tenth of the operating position relative to the lower carriage, the upper carriage will move one gauge block on the lower carriage to adjust its final accurate position. This is because it is established.

Therefore, the term ``circularly curved cylindrical segment'' is meant to include similar items.

As mentioned above, the upper carriage has an L-shaped cantilevered structure 63 with an upright half 1, and when lifted, the weight of this upper carriage is transferred to the pivot assembly against the lift arm 401. It is supported by the three-dimensional connector 611, and the direction opposite to this pivot 611 is supported by the roll 65.
As the upper carriage U moves up and down, adjusted by the action of the cylindrical segment 64, the center line (axis) of the pivot 61 relative to the lift arm 401 moves about the axis of the lift arm fulcrum pivot 42. .

In order to keep the upper carriage U parallel to the lower carriage L1, the driven roll 65 is arranged so as to move in the same arc. This allows the sum of the radii to be equal to one length of the link 2.

During the lift operation, roll 65 is under compressive load and follows the precisely machined curved surface of segment 64 to obtain the desired parallelogram motion.

The arc W is used to move the upper carriage U almost horizontally and to perform vertical movements many times.
It is the side part of.

In other words, as shown in FIG. 4, the tangential plane 10 (indicated by dashes and broken lines) to the curved cylindrical segment 641 near the center of the operating area extends perpendicularly.

In order to provide exactly one curved segment 64 in the vertical back plate 44, there is a horizontal straight bar 12 (FIG. 4) - serving as a fixed bar - extending transversely below the bottom end of the curved segment 64.

The fixing rod 12 is held at one position in front of the vertical box frame 38 by a cap screw (not shown).

From this rod 121, it is also easy to provide one plate 73 after the segment 1-64.

Both of these are firmly tightened with box frame 381 holding screws.

This spacer plate 73 is connected to the segment 64 and the box frame 3.
8, and can correct any small misalignment.

This ensures proper contact between the segment 64 and the roll 65 at the entire operating area.

The curved segment is wide enough so that it is in sufficient contact with the roll 65 for all HB of the downward movement of the upper carriage U, including the maximum downward movement of this carriage.

The hardness of the curved surface of the segment 64 is somewhat lower than that of the roll 65, so that ideal conditions can be obtained at the contact portion.

This relative hardness also allows the tolerance in the direction of the upper carriage to be determined and adjusted.

The roll 65 (FIG. 8) is the outer part of the wear-resistant bearing, the inner race of which is the shoulder 76 at one end of the bearing pin γ1, the sleeve 78,
It is held between the bracket members 66 and 61 by the retainer γ5I, which is compressed between the lock washer 19 and a lock nut 80 screwed into the opposite end of the bottle 1γ.

The bearings of the rolls 65 have wear-resistant members 81 and are sealed on both sides with rOJ IJ songs 2 against ingress of coolant and extraneous substances.

This ring moves in a groove around each cage and against the inner surface of the bearing outer race forming the roll 65.

This bearing 65,81. 14 is the internal passage 8 of the holding bottle γ1
Lubricating oil can be injected through 2.

In order to ensure the movement and prevent lateral movement between the roll 65 and the segment 64, the key 84 (FIG. 5) is provided exactly once on the inner plate 681 of the upper carriage and on the bracket members 66 and 6γ. Use one of the following.

Tighten the bracket t-ib materials 66 and 6γ with one side plate holding screw.

This roll is used to withstand high operating loads and operating conditions of coolant, heat and smoke during operation.

In particular, in the case of a long casting machine, one or more rolls 65 may be used with one or more curved surfaces 641 engaged with each other and aligned in the axial direction.

The force required to lift the upper carriage U is obtained by the action of the two hydraulic cylinders 50 and 51.

Since the fluid pressure is applied to the rond ends of these cylinders, the piston rod 52 contracts and exerts a downward force F (FIG. 6) on the back plate 561 of the lift arm 40.

Therefore, the front part of the lift arm 40 swings up around its fulcrum 420, raising the upper carriage.

A lift device that applies a downward force to the back of the lift arm 40 by acting between fluid-powered lift cylinders 50 and 51, such as hydraulically operated lift cylinders, or pivots 53 and 55 (FIGS. 4 and 5). Although shown as such, it is understood that other lifting devices may be used.

For example, a screwdriver may operate the pivots 53 and 55 while actuating them with an electric or hydraulic motor or manually.
It is effective to have one effect between

The apparent parallelogram configuration described above eliminates the need for actual links γ4 and pivots X and Y, leaving more space available in the box frame back plate 38 for other equipment. be.

The elimination of pivots X and Y also avoids the problems of lubrication and multiple bearing seals.

The lift arm 40 is supported on each side by a single pivot pin 42 (FIG. 9) about which the cannula 86 rotates.

This sleeve is held by a thrust washer 8γ and a cap 88 from the box frame back plate 381 of the casting machine.

An advantage of this rear-extending lever-type lift device 60 is that it is mounted on the rigid box frame with a lift arm above the back plate 38.

In this way, the lift arm 40, which is attached to the upper part of the lift means 50 and 51, does not limit the space required for other functions.
By providing one arm behind the back plate 38, the lift arm and the lift device can withstand one sudden operation condition.

Lift means 50 and 51 are attached to the back plate of the casting machine from this lift device f, the operating range is further expanded, and the lift cylinder 1 can be provided with a convenient situation.

The reason for this is that they are further away from the molten metal in casting zone C, which in turn is further away from the cooling fluid being used on the opposite side of the belt.

The line of action of the lifting means 50 and 51, ie, the line passing through the axes of the pivot points 55 and 53, is the pivot point 42 and 53.
The lift arm arrangement shown in FIG. 1 provides relatively constant mechanical properties of the lift cylinder 1 over the entire lift operating range.

This relatively constant mechanical property results in a substantially constant hydraulic requirement throughout the lift area.

The very limited amount of frictional force allows operation of the lift device to be smooth and easily controlled during all conditions of the lift cycle.

Also, the upper space of the upper carriage is free of obstructions and can be used to accommodate other means such as belt handling means 85.

In addition to one piece to support the knot arm 40,
A single pivot pin assembly can be used to adjust the orientation of the lift arm so that the directions of movement of the upper and lower casting belts are exactly parallel.

This is constituted by an eccentric rotation of the sleeve 86 in the structure 1.

Each camp 88 holds one thrust washer 81 in the upper part of the box edge 38, one cannula 86, and one lift arm 40 in the axial direction.

The cap 88 is attached to the stand member 4 of the box frame using the cap screw 92.
1 and 431 are fixed, and the eccentric bushing 86 does not rotate due to the IL bolt 901.

This eccentric bushing can rotate one angle in either direction in increments of five degrees and allows one horizontal and vertical adjustment of the upper carriage at both its upper and lower ends.

There are eight pre-drilled openings 89 at uniform intervals around the axis of the cap 88, and eight pre-drilled openings 89 are provided at uniform intervals on the end surface of the sleeve 86. Nine sockets are pre-drilled.

In this way, the opening 89 into which the fixing bolt 90 is inserted
The combination of the socket 83 and the socket 83 has a total capacity of 720T, which allows adjustment in five stages.

The peripheral outer surface S (FIG. 9) of each thrust washer 87 adjusts the upper carriage in any direction on both the upper and lower pivot assemblies 42.

In this way, the upper carriage is adjusted to "move" its belt over the casting zone C and over the bottom 1 exactly one parallel to the lower belt.

Therefore, horizontal creep movement of the belt against the casting is avoided.

Accurate movement of the belt reduces wear on the coated casting surfaces of belts 12 and 14 and does not damage the surface finish of the casting.

Pivot bin 42 and eccentric bushing 86 are lubricated through port 91, which is provided with cab 88 and thrust washer 8γ, respectively.

If desired, remove one or both of the eccentric bushings 86 and adjust the alignment between the upper and lower carriages in a larger or more upright position.
- It is also advantageous to replace one with a small eccentric angle.

The upper carriage U is pivoted from the lower shift assembly 611 at FH5 in front of the lift arm 40 and can be moved up to 12 inches independently of all other functions of the caster 10.

This movement is preferred to distribute the molten metal from the casting zone C1 to the oven pool or from the injection method.

The main component of the lower shift assembly 61 is the retaining ring 96)
At the front of the lift arm 40 are vertical arm structures 62 of the upper carriage U, which are tubes 94 that slide in three bushings 95, each holding one member of three bungalows spaced one inch apart. is two rings γ8 and one split link 99
Then, turn the pair of spaced end plate support members 97 firmly attached to the tube 941 to the right.

The upper support member 91 is provided midway between the first and second bungae members 93 (IJ), while the lower support member gL (member 91
is provided midway between the second and third bungae members 93.

Therefore, regardless of whether the upper carriage moves upwards, downwards or in between, this carriage is firmly supported.

For moving the main sliding tube 94, there is a large diameter tubular housing 100 and a lift arm 4 concentric with the main tube 94.
There is a spacer 101 that is fixed with a bolt 931 of the upper bunker member 931.

The cap 102 is attached to the housing 10 with one presser screw.
One end of 0 is fixed.

A thrust shaft having a thread 105 is held by a cap 1021 in the axial direction by a pair of thrust bearings 106, a spacer 107, an IL washer and a locking nut 109.

The end of the chassis 104 is threaded, and the end of the main pipe 94 is screwed into the cap 112I.

Thrust shaft 104 with a wrench on the head end 1141
When rotated, the assembly operates like a screwdriver and moves the carriage U upwardly (7) ten degrees relative to the lift arm 40 and casting machine 1.

The lift device 601 is provided with a positive safety link 116 (FIG. 5) which holds the upper carriage in its fully raised position.

This safety link can be operated manually and can be toggled in either the extended or retracted position, and can be used in all downward travel positions of the three-way carriage.

In use, when supporting the carriage U, the safety link 116
is in the extended position under compressive load, the fixed plate 11 of the upper carriage
There is one space between γ and the pivot 118 of the link 116.

Additionally, there is a load carrying and fixing plate 120 at the front of the box frame 38 as reinforcement for the Viboso N18.

The bottom end of the joint safety link is provided with a safety fixing plate 1201 for gripping with one of the carriage fixing plates 117 when the ring swings out of its extended position.

A safety link is provided so as not to interfere with shifting or other necessary maintenance operations on the casting belt.

FIG. 5 (not shown) 1. There are a pair of edge cutters 121 and 122 that round the edges of the casting area C.

These edge cutters are bent and rotate around the lower carriage as shown in FIG.

They can be removed and replaced with thicker or thinner ones depending on the wall thickness of the metal being cast.

These hems 121 and 122 and also the casting healds 12 and 14 can be changed when the upper carriage is raised as shown in dashed and dashed lines in FIG.

It is also advantageous to inspect and repair the casting machine when the upper carriage is raised.

At this time, the safety link 116 is extended one step to ensure that there is no accidental damage to the upper carriage.

The lift device shown is designed to provide a lift of 20 inches (approximately 50.8 CrrL) to the upper carriage U1.

As another means of adjusting the direction of the carriage.

The lower back carriage pivot 30 (FIG. 3) has a clasp pin 126 and a nut 121.
Note that there is an associated holding clamp with a curved saddle extending 0.

This clamp pole 1-extends through the saddle 124 and pivot 30, which tightens the fixing bracket of the main chassis frame 24 and the pivot 301, removing all tolerances of the pivot.

The main chassis frame is thus preloaded against the base at the dorsal pivot point to prevent any slippage (as shown in Figure 3).
.

Furthermore, in order to accurately align the pivot bracket 54 for the lift cylinder piston rond, the back plate frame 381 is provided from the key 128 (Figs. 4 and 5) in the keyway 130 (Fig. 3). 0)

The belt drive means 132 is mounted on a platform 1. cantilevered from the rear of the main chassis 24. Jz+ is installed 0)
Ru.

In this way, the drive means is located closer to the casting area (a more advantageous position).

Also, the cantilevered platform and drive means 13
2 somewhat counterbalances the ten inch carriage L rigidly cantilevered from the front of the main chassis 24 with the upper carriage U above it.

As mentioned above, a space on the upper carriage which is easily accessible is provided with belt processing means 85 (Nos. 1, 2 and 4).

This belt processing means is as shown in FIG.
This belt extends across the width of the upper cast bell 1-12 and is used to provide a belt treatment such as a coating.

As shown in FIG. 4, the pivot latch 136 in the operating position 1 has a hook 13γ that engages a recessed hole in the upper carriage frame.

Spring 1381 forces the latch into its locking position around latch pivot 139.

To remove the launch and raise the handling means 85, there is a tension member, e.g. loft or cable, connected at the upper end of the latch 141 and at the lift arm 142 above the level of the pivot 61. .

Therefore, when the lift arm swings up around the fulcrum 42,
The first leg of this upward movement releases the tensile material 140 from the tensioning means 85 by swinging the upper carriage up (as shown in FIG. 5 140).

This upward swing away from the upper carriage makes removal of the belt 12 easier.

'JA of the equipment where a constant tilting of the casting zone C is desirable.
In this case, the main chassis frame 24 can be rigidly attached to the U-shaped base means B1.

Supporting the casting machine at three points is generally achieved by using three foot pads.

In this case, two of the three pads are provided at the outward ends of each base beam 34 and 36, that is, at the two arms of the U-shaped base.

A third footpath is then placed at the bottom center behind the base frame 26.

[Brief explanation of the drawing]

1 is a perspective view of the input at the upstream end of a continuous strip-casting machine according to an embodiment of the present invention, viewed from a front position on the outside of the twin healds; FIG. Twin bells! Figure 3 is an elevational view of the casting machine looking towards the outside of the carriage; Figure 3 is an elevational view of the casting machine looking towards the back of the support frame inside the casting machine; , an elevational view of the continuous casting machine, looking away from the upper end; FIG. FIG. 6 is a schematic diagram illustrating the apparent parallelogram linkage provided by the lift device 1 in the casting machine 1 of the present invention; FIG. 7 is a perspective view of the upper carriage shift device. FIG. 8 is a cross-sectional elevational view of the roll mount taken along line 1 of FIG. 4, and FIG. FIG. 3 is a cross-sectional elevational view of the arm bearing and mounting assembly. L...Lower carriage; U...Upper carriage; 12...Upper casting bell l-; 14
...Lower blade casting belt; 24...Casting machine frame; 38...Back plate; 40...Lift arm; so, 51. 52-=-... Lifting means; 61... Assembly to pivot 1; 64...
- Convex cylindrical member; 65...Rolling means.

Claims (1)

Claims: 1. A caster frame 24 having a chassis with a back plate 38 extending upwardly; a carriage L; a fulcrum pivot 42 on the back plate above the lower carriage level; a back portion extending one length behind the back plate; and a front portion extending one length in front of the back plate; A lift arm 40 is attached to the lift arm 40 so as to be able to freely pivot from the fulcrum pivot, and a lift means connected to the back of the lift arm that pulls the back of the lift arm downward in order to swing up the front part of the lift arm 40. 50,51
, 52, and the rift 1 to the front part of the arm are connected by a pivot assembly 61, and the upper part is arranged above the lower carriage and rotates 1 part in parallel with the lower belt. an upper carriage U having a cast belt 12, a convex cylindrical member 69 provided with the back plate at a level below the fulcrum pivot, and in rotational engagement with the convex irregularity at a level below the pivot assembly; Relation 1: the roll means 65 attached to the upper carriage and the convex cylindrical member extend one length parallel to the axis of the pivot assembly and one length parallel to the axis of the fulcrum pivot. , the distance from the axis of the fulcrum pivot to the convex cylindrical portion is equal to one distance from the axis of the pivot assembly to the axis of the roll member, and the effective radius of curvature of the convex cylindrical portion and the roll means The sum of the radii is the distance 1 between the axis of the fulcrum pivot and the axis of the pivot assembly.
When the upper carriage is raised and lowered by the lift arm, the upper carriage is kept parallel to the lower carriage by directing the direction of the twin-belt continuous casting machine and lift equipment.