Hydraulic servo synchronous lifting device and control method thereof
A technology of synchronous lifting and hydraulic servo, which is applied in the direction of lifting devices, etc., can solve the problems of poor synchronization accuracy of lifting and lowering of tundish trucks
Inactive Publication Date: 2012-01-25
LAIWU IRON & STEEL GRP
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Problems solved by technology
[0004] The purpose of the present invention is to provide a high-precision hydraulic servo synchronous lifting device and its control method to solve the problem of poor synchronous lifting accuracy of the tundish car during the protective pouring of the special-shaped billet continuous casting machine, and then realize the protective pouring lifting device
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[0036] Now, embodiments of the present invention will be described in detail with reference to the drawings. Throughout the drawings, the same reference numerals always indicate the same elements.
[0037] figure 1 Is a front view of a synchronous lifting device for a tundish car according to an embodiment of the present invention, figure 2 Is a top view of a synchronous lifting device for a tundish car according to an embodiment of the present invention, image 3 It is a schematic view of a hydraulic system of a synchronous lifting device for a tundish car according to an embodiment of the present invention.
[0038] Such as figure 1 As shown, the two ends of the tundish car synchronous lifting device 1 according to the embodiment of the present invention are respectively connected to the tundish car body 2 and the tundish lifting platform 3, and the tundish lifting platform 3 passes through a plurality of guides on the tundish car body 2. The sliding plate 4 is connected to the ...
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The invention provides a high-precision hydraulic servo synchronous lifting device of the tundish car of a special-shaped blank conticaster and a control method thereof. The high-precision hydraulic servo synchronous lifting device comprises a plurality of hydraulic actuating mechanisms, a hydraulic station, sensors and a central controller, wherein each hydraulic actuating mechanism comprises a servo cylinder and a servo valve; the hydraulic station is connected with the plurality of hydraulic actuating mechanisms by a hydraulic pipeline to form a hydraulic loop; each servo cylinder is provided with a sensor for detecting the displacement of the piston rod of the corresponding servo cylinder; the central controller presets the ideal curve of the displacement or the speed of the piston rod of the servo cylinder, and is communicated with each sensor by the control line; and a result detected by the sensor is compared with the ideal curve of the displacement or the speed of the piston rod of the servo cylinder, which is preset in the central controller, thereby controlling the operation of the hydraulic actuating mechanisms.
Description
Technical field [0001] The invention relates to a hydraulic servo synchronous lifting device and a control method thereof, in particular to a high-precision hydraulic servo synchronous lifting device and a control method thereof. Background technique [0002] In the prior art, the lifting of the tundish car of the near-net shaped billet continuous casting machine is realized by driving a platform with 4 hydraulic cylinders. Because the tundish synchronous lifting device used in the prior art cannot well control the synchronization accuracy during the lifting process, in addition, the thickness of the web of the shaped billet mold is small (only 90mm), and the outer diameter of the nozzle during the protection pouring is 50mm. Therefore, the existing synchronous lifting device causes the nozzle to tilt during the descending process. When the inclined nozzle enters the crystallizer, it will easily cause the nozzle to break when it hits the inner wall of the mold web, so that the pr...
Claims
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Inventor 孟宪俭侯风岭马志海王建军
Owner LAIWU IRON & STEEL GRP