JPH0734973B2 - Guide device for the mold installed on the lift of the continuous casting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a guide device for a mold of a continuous casting apparatus installed on a frame-shaped lifting platform that vibrates with respect to a support platform, On the other hand, it is provided with a laterally long support and guide elements which are fixed to both ends of the support and are parallel to the support and elastically deformable. On the other hand, it relates to a guide device fixed to a support platform.

[Prior Art] A guide device of this type is well known as a patent EP-A-0151357. Here, the support body is formed as a vertical support body supported by the support platform at the central portion. The support also has ridges at the ends, where leaf springs are secured so as to place the vertical support in an overtensioned state to bridge it. The mold lifting table is fixed to the leaf spring at the center thereof.

Here, the vertical support must be particularly robust in order to avoid deformation due to tensile tension due to deflection of the leaf spring. Such deformation is not desirable because the pre-tension of the leaf spring changes and the mold guide becomes inaccurate. For this reason also, the vertical support must be made particularly heavy and stable, since it is subjected to large bending stresses which impair the service life of the guide device.

[Problems to be Solved by the Invention] Expansion of the elevating table with respect to the support platform lying laterally with respect to the longitudinal extension of this well-known guide device causes twisting and warping of the leaf spring, and There is a possibility that the leaf spring will be damaged because the required things cannot be controlled.

The present invention avoids these drawbacks and difficulties, makes it possible to use a lighter, material-sparing support and guarantees a trouble-free guide of the mold, and furthermore, it is elastically deformable. An object of the present invention is to provide a guide device for realizing protection of a guide element for bending from bending stress.

Means for Solving the Problems The purpose is to provide, in a guiding device, the support is formed from a tube, the tube being at least one in one position between the two ends.
Two openings, through which openings project into the interior space of the tube, and at least one leash as a guide element fixed to the lid, one of which is the support and the other of which closes the tube. Achieved by

[Operation] By using a leash as the elastically deformable guide element, the movement of the lifting platform relative to the support platform, eg due to thermal expansion, can simply be taken into account in the design of the guiding device. Appears only as a simple vertical load that can be evaluated and evaluated.

In order to provide longitudinal pretensioning, the ends of the fixed rope are preferably connected to tension bolts, which penetrate through the lid and are fixed by a fixing device such as a nut. ing.

In order to increase the safety (in the case of a rope break) and the accuracy of guidance, it is preferable to use a plurality of ropes (preferably four ropes) arranged radially symmetrically with respect to the tube axis.

According to the invention, a support in the form of a tube also plays a role of protecting the rope, so that a case for protecting the rope is not particularly necessary. For example, if the inside of the pipe is required to have an absolute hermeticity, such as filling the inside with a fluid, a hood that covers the opening of the pipe and surrounds the support is provided between the support and the outside of the pipe. It is preferable to provide such a closed facility. The tube is preferably in the shape of a rectangular tube.

Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings.

A mold 1 having a straight mold cavity 2 through which the strands pass in a continuous casting device is removably fixed to a lift 3. The lifting table 3 makes a periodic periodic vibration motion with respect to a fixed support frame 4. In order to produce this movement, a cyclic vibration drive 5 is used, which drives an eccentric shaft 7 via a corner gear transmission 6 which changes direction by 90 °. The eccentric shaft 7 vibrates the lifting table 3 in the vertical direction via the shaft joint 8.

In order to vibrate the mold 1 laterally, i.e., exactly vertically to the vertical axis 9 of the mold cavity 2 without lateral displacement, the lifting platform 3 comprises a support platform fixed via three guide devices 10. Guided at rack 4. As can be seen in FIG. 1, one guide device 10 is arranged parallel to the wide side of the mold 1 and two guide devices 10 are arranged close to both narrow sides of the mold 1 in parallel respectively. ing. The guide devices 10 have the same structure as each other, one of which is shown in section in FIGS. 3 and 4.

Each guide device 10 is in the form of a tube 13 having a substantially square cross section and is supported on the support platform 4 via a support bracket 14 in the middle of its longitudinal length. The support bracket 14 comprises for this purpose a flange plate 14 'which is screwed onto the support platform.

Inside the tube 13, four ropes 15 are stretched, which are parallel to each other with respect to the longitudinal axis 13 'of the tube and which are radially symmetrical. This rope is
One end 16 is fixed to 18 which closes the end 17 of the tube. For this purpose, the rope ends 16 are each connected to a tension bolt 19, which penetrates a lid 18,
The nut 20 can be fixed to the lid 18.
The tension bolt 19 allows the rope 15 to have a pre-tension by connecting a hydraulic pulling device to the threads on the outside of the tension bolt 19. By pretensioning, the tension bolts 19 will each be fitted with a nut 20 and a lid 18
It is fixed against the. To protect the tension bolt 19, the lid 18 is covered with a lid 22. Each lid 18 is equipped with a flange 23, which is screwed onto a mating slug 24 welded to the end 17 of the tube.

There is an opening 25 in the middle of the length of the tube 13 opposite the support bracket 14. Through this opening 25, the support portion 26
Sticks out inside. The support portion 26 is screwed to the lifting table 3 of the mold 1, and is a rope embedded in the support portion 26.
15 is fixed to the supporting portion 26 by a fixing means 27.

A support portion 26 projects from the opening 25 of the tube 13 to the outside.
In order to prevent foreign substances and water droplets from entering the inside of the pipe 13, the opening 25 of the pipe is blocked by the pipe 13 on the one hand and the hood 28 fixed on the support 26 or the lift 3 on the other hand. There is.

The rope 15 is not only such that it extends from lid 18 to lid 18, i.e. over the entire tube 13, but for example each
It can be like stretching the support 26 and one of the lids 18.

Only one rope from lid 18 to lid 18 and its longitudinal axis and the longitudinal axis of tube 13
The function of the guide device 10 according to the present invention is satisfied by being stretched so as to coincide with 13 '. Further, in order to maintain the function of the guide device 10 even when the rope is broken, it is preferable that a plurality of ropes 15 are radially stretched around the longitudinal axis 13 ′ of the pipe 13. As shown in FIG. 4, a form using four ropes is preferable as an embodiment. In this example, 4
Even with the rope 15 of the book, there is still ample room for the fastening means 19, 20 of the rope 15, typically during adjustment of the guide device 10 from the outside.

The guide device 10 according to the present invention can also be applied to molds having a circularly curved mold cavity. In this case, the guide device 10 may be arranged in a substantially radial direction, and the support between the lift 3 and the support 4 may be eccentric.

EFFECTS OF THE INVENTION The guide device according to the present invention ensures that the support is light and allows the material to be used sparingly, guarantees that the mold is guided without failure detection, and is elastically deformed. Protects the guide element from bending stress.

[Brief description of drawings]

FIG. 1 is a plan view showing a mold fixed to a lift table. FIG. 2 is a partial side sectional view seen from the direction of arrow II. FIG. 3 shows an enlarged sectional view taken along the line III-III in FIG. FIG. 4 shows an enlarged sectional view taken along the line IV-IV in FIG. 1 ... Mold, 3 ... Lifting platform, 4 ... Supporting platform, 10 ... Guide device, 13 ... Supporting body, 15 ... Rope, 18 ... Lid, 25 ... Opening, 26 ... Supporting part .

Claims (5)

[Claims] 1. A guide device for a mold of a continuous casting device, which is installed on a frame-shaped lifting platform that vibrates with respect to a support platform, comprising a support body that is long in the vibration direction and both ends of the support body A guide element which is fixed and parallel to said support and which is elastically deformable, said guide device being fixed between its ends, on the one hand on a lifting platform and on the other hand on a support platform, The body is formed of a tube, said tube being coupled to said support platform, said tube being at least 1 between its ends.
Two openings, through which the support projects into the interior space of the tube, which support is connected to the lifting platform, the guide elements described above, one for closing the support and the other for closing the tube. A guide device, characterized in that it is at least one rope fixed to a lid that is open. 2. An end of the rope fixed to the lid is connected to a tension bolt, which penetrates the lid and is fixed to the lid by a fixing device. The guide device according to item 1. 3. A plurality of ropes, in particular four ropes, arranged radially symmetrically with respect to the longitudinal axis of the tube, as claimed in claim 1 or 2. The described guiding device. 4. A sealing device which covers the opening of the pipe between the support and the outside of the pipe and surrounds the support, and further comprises a sealing device. Either one
Guide device according to the item. 5. The guide device according to claim 1, wherein the pipe has a prismatic shape.