A flexible vibration device for continuous casting

Abstract

The invention provides a flexible vibration device for continuous casting. The arc imitation of a vibrating rack of the device is realized under the guide of a guide plate spring; and flexible vibration is realized under the flexible drive of a buffer, pull rods and a driving mechanism, no lubrication is needed, the service life is long, and the flexible vibration device for the continuous casting is suitable for the requirement of high-frequency vibration. The device comprises a fixing rack, a vibrating rack, the guide plate spring, the buffer, the pull rods, an elastic push rod, the drivingmechanism, a positioning pin, a limit stop mechanism and a protective cover. The flexible vibration device for the continuous casting is characterized in that the outer arc side of the vibrating rackis connected with the buffer supported on the fixing rack, the right-and-left direction of the vibrating rack is provided with the pull rods for the elastic staggered connection of the vibrating rackand the fixing rack, the inner arc side of the vibrating rack is fixedly connected with the elastic push rod, the lower end of the elastic push rod is connected with the driving mechanism which is fixedly connected to the fixing rack, the vibrating rack and the fixing rack are supported by the buffer, and the effect of the flexible vibration is really realized by externally adding the flexible connection of three points which are the two points of a left pull rod and a right pull rod and one point of the elastic push rod of the driving mechanism totally.

Description

technical field [0001] The invention relates to a flexible vibration device for continuous casting, in particular to a flexible vibration device for a crystallizer of a continuous casting machine for square billets, round billets and special-shaped billets, and belongs to the technical field of continuous casting equipment in the iron and steel metallurgy industry. Background technique [0002] In the iron and steel metallurgy industry, in the continuous steel casting production line, the molten steel is injected from the top of the crystallizer, and the molten steel in the crystallizer is forced to cool through the water-cooled copper tube to make the molten steel crystallize from the outside to the inside of the copper tube to form a billet with a liquid core. In order to prevent molten steel from adhering to copper tubes or copper plates during the solidification process in the crystallizer, resulting in sticking or leaking, it is necessary to use a vibration device to dri...

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Problems solved by technology

[0003] Since the continuous and stable high-frequency vibration can ensure good surface quality of the slab, continuous improvements have been made to the vibration device, such as changing from the previous true arc vibration (which is not affected by thermal expansion) to short-arm four-connection The rod imitates the arc (the wear of the four-link bearing affects the vibration accuracy), then changed to a half-leaf spring (there is still wear in the bearing link), and then changed to a full-leaf spring (due to the cantilever arrangement structure, the leaf spring is not easy to tension), and later There is full leaf spring vibration in which the center of vibration coincides with the center of mass. Although the center of vibration coincides with the center of mass, there is only one or two points of support on each side between the leaf spring and the vibrating frame, and the leaf spring cannot be effectively straightened and given Appropriate pre-tightening force makes the performance of series-connected leaf springs unfavorable for effective performance; on the other hand, although two-point support on one side can also achieve arc imitation, it requires high processing and adjustment accuracy and adjustment of leaf springs, otherwise It is difficult to achieve the accuracy of imitation arc vibration, such as the invention patent "A device for continuous casting of metals and especially steel" (application number: 01802725.3 application date: 2001-05-05) applied by German SMS Dimag AG in China, That is, the above-mentioned full leaf spring vibration structure in which the center of vibration coincides with the center of mass; Figure 5 As shown in the domestic traditional leaf spring, leaf spring fixing seat and leaf spring side support series connection fixed structure, the support of the leaf spring and the vibrating frame is realized through the transition of fixed support beams. The shortcomings of this structure It is inconvenient to connect and adjust the fixed seat of the leaf spring to the fixed frame. The leaf spring and the vibrating frame are not directly connected. Secondly, the vibrating device is in a cantilever state. The distance between the vibration center L3 of the structure and the center of gravity L4 of the mold is relatively large. Far, resulting in unreasonable stress state of the system, low vibration accuracy and large error

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