DE2257937A1 - SWIVEL DRIVE FOR THE SUPPORTING DEVICE OF THE CASTING PANS IN CONTINUOUS CASTING PLANTS - Google Patents

Description

sk / yes a

Maschinenfabrik Augsburg-ITürnberg Corporation

Nuremberg, November 16, 1972.

Swivel drive for the support device of the ladle in continuous casting plants

The invention relates to a swivel drive for the support device of the casting ladles in continuous casting plants.

The rotary drives of the type mentioned are exposed to considerable additional stresses. So arise at the beginning of the pivoting of the support device and when braking the support device as a result of the large masses to be accelerated or braked, considerable torque peaks, which are a relative large dimensioning of the swivel drive. Furthermore, the replacement of the deflated Ladles versus filled ladles are usually associated with considerable impacts, which can lead to damage can lead in the gearbox of the rotary actuator,

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if this is not taken into account from the outset by larger dimensioning of the transmission. These Impact forces can be caused by opening the service brake of the vision drive can be avoided, but this occurs when the brake is released when it is used the ladle on the support device significant Acceleration forces that would additionally load the gearbox of the swivel drive. aside from that this solution is practical for support devices with a two-armed support beam for the ladle not possible because the pouring stream - due to the rotating support device - next to the intermediate container would go.

The invention has for its object to provide a pivot drive in which even when closed Brake the transmission parts are stressed as little as possible despite the additional external forces that occur.

According to the invention, this object is achieved in that when the oscillating drive is equipped with an epicyclic gear known type the sun pinion not with a Drive motor is connected, but only meshes with the planetary gear, and is elastic in the direction of rotation is resiliently supported.

On the one hand, the elastic yielding reduces the torque peaks when starting to pivot and braking the Carrying device has the consequence, and on the other hand by the arrangement of the elastic part close to the output the following gear parts are not affected by the impact forces generated when changing the ladles Reverse torque are claimed, the loading

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overall load on the transmission is relatively low. Furthermore, since the elastic flexibility in the the non-rotating part of the transmission is switched on, the transmission also takes up relatively little space.

In a further embodiment of the invention, the elastically resilient support of the sun pinion takes place by coil springs, Telier springs or torsion bar springs. The design with coil springs has advantages in that the coil springs can be manufactured cheaply, are easy to dimension and install; the version with Telierfedern Allows to a small extent additional friction work, v / as for the Vibration damping is advantageous; the design with torsion bar ". results in a low overall height enables.

According to a further feature of the invention, the coil, plate or torsion bar springs are shock absorbers connected in parallel. This measure prevents the sun pinion from turning back after the Shock absorbed.

So that when the sun pinion is rotated beyond the elastic range, there is no damage to the transmission can occur, is according to a further feature of the invention, the sun pinion with a slip clutch tied together. ~

In the drawing are two embodiments of the. Invention shown schematically. It shows: ·

Pig. 1 the rotary actuator with part of the

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device in plan view,

Pig. 2 shows a section along the line II-II Pig. 1,

Fig. 3 the transmission of the swivel drive, partly in Cut,

4 shows a second embodiment in plan view and

5 shows the variant according to FIG. 4, partly in section.

The swivel drive for the known, denoted by 1, only indicated in FIG. 1 Carrying device for the two ladles in continuous casting plants has a drive motor 2, which over a gear 3 drives the turntable 4 of the support device 1. The gear 3 is an epicyclic gear with a Sun pinion 5, a ring gear 6, a planetary carrier and a planetary gear 8 are formed. The ring gear 6 is via a pinion 9 and -> if necessary - via an intermediate gear 10 with the drive motor 2 in connection. The circulating carrier 7 is a pinion 11 and a large one Gear 12 is connected to the turntable 4. The sun pinion 5 is on one in the housing of the transmission 3 in known V / ice mounted shaft 13 attached. The wave 13 of the sun pinion 5 is not connected to a drive motor, but arranged so that a Torque can be removed ". The shaft 13 is in the direction of rotation via elastically yielding members 14, which can be, for example, coil springs, disc springs, torsion bar springs, hydraulic cylinders or the like,

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supported. The elastic members 14 damping devices 15 are connected in parallel, the possibly occurring Dampen vibrations *

So that when the shaft 13 of the sun pinion 5 rotates beyond the elastic range, there is no damage occur, the shaft 13 is equipped with a slip clutch 16 connected, which slips when a predetermined maximum torque is exceeded. The elastic Links 14 and the damping device 15 engage on the rotatably mounted housing part of the slip clutch 16.

The one in the Pig. Embodiment shown in Figure 4 and 5, the elastically compliant member 14 is a torsion spring which is arranged in the form of a hollow shaft 1 ¹ ^ shaft of the sun pinion. 5 The rotary _^:; The rod spring is connected to a slip clutch 16 analogously to the first exemplary embodiment, to the rotatably mounted housing part of which a damping device acting in the direction of rotation, which can for example consist of two shock absorbers 18, is connected in an articulated manner.

If when reinserting the ladles, not shown, impacts on the support device 1 and the Gear 3 exercised, because the sun pinion 5 and thus also its shaft 13 yields in the direction of rotation, with the elastic members 14 are further compressed. Because the elastically resiliently mounted sun pinion. or whose V / elle is close to the output, the gear parts downstream of the sun pinion are through the Impact forces not used. In the same way, the elastically resilient mounting of the sun pinion 5 a reduction of the torque peaks at the beginning of the operational pivoting movement of the support device as well as when they are slowed down.

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Claims (6)

3k / yes 4 Maschinenfabrik Augsburg-Nürnberg Aktiengesellschaft Nürnberg, November 16, 1972 Patent claims 1. Swivel drive for the support of the ladle in continuous casting plants, characterized in that when equipping the swivel drive with a Epicyclic gear of known type, the sun pinion (5) is not connected to a drive motor, but exclusively meshes with the planetary wheel (8), and is supported elastically resiliently in the direction of rotation. 2. Swivel drive according to claim 1, characterized in that the elastically resilient support of the sun pinion (5) is done by coil springs. 3. Swivel drive according to claim 1, characterized in that that the elastically resilient support of the sun pinion (5) takes place by disc springs. 4. Swivel drive according to claim 1, characterized 40982A / 0430 net that the resilient support of the sun pinion (5) by means of a torsion spring arranged in the hollow shaft (17) of the sun pinion. ·. 5. Swivel drive according to claim 2, 3 or 4-, characterized characterized j that the coil springs or plate springs or the torsion bar spring damping devices (15) are connected in parallel. 6. Swivel drive according to claim 1, characterized in that that the sun pinion (5) with a slip clutch (16) is connected. 409824/0430 Read more