A hydraulic control method and device
A control method and technology of a hydraulic control system, which are applied to fluid pressure actuating devices, fluid pressure actuating system components, servo motors, etc., can solve problems such as residual pressure and damage, and achieve the effect of eliminating continuous load and improving service life.
Active Publication Date: 2019-06-07
SHOUGANG JINGTANG IRON & STEEL CO LTD
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Problems solved by technology
[0004] By providing a hydraulic control method and device, the present invention solves the technical problem in the prior art that the traverse hydraulic cylinder is easily damaged due to residual pressure when used in conjunction with the walking beam
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Embodiment Construction
[0032] In order to solve the technical problem in the prior art that the traverse hydraulic cylinder is easily damaged due to residual pressure when used in conjunction with the walking beam, the present invention provides a hydraulic control method and device.
[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0034] An embodiment of the present invention provides a hydraulic control method, wh...
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The invention relates to the field of hydraulic control, in particular to a hydraulic control method and device. The hydraulic control method comprises the steps that whether a control instruction used for switching the motion state of a stepping beam connected with a transverse movement hydraulic cylinder into the stop state exists or not is detected; when the control instruction exists, a power source of a reversing valve in a hydraulic main circuit of the transverse movement hydraulic cylinder is cut off; and the preset time is delayed, and a power source of a reversing valve in a hydraulic bypass of the transverse movement hydraulic cylinder is cut off. According to the hydraulic control method and device, after the power source of the reversing valve in the hydraulic main circuit of the transverse movement hydraulic cylinder is cut off, the power source of the reversing valve in the hydraulic bypass is cut off in a delayed mode; the pressure in the transverse movement hydraulic cylinder and the pressure in a hydraulic oil pipe directly communicating with the transverse movement hydraulic cylinder are both removed through the meso-position function of the reversing valve in the hydraulic main circuit; and accordingly, no pressure remains in the transverse movement hydraulic cylinder after the transverse movement hydraulic cylinder is stopped, the continuous load of the transverse movement hydraulic cylinder is eliminated, and the service life of the transverse movement hydraulic cylinder is effectively prolonged.
Description
technical field [0001] The invention relates to the field of hydraulic control, in particular to a hydraulic control method and device. Background technique [0002] Walking beam is one of the most commonly used steel coil transportation equipment in rolling mills. The steel coils coming out of the hot rolling coiler are generally transported through the walking beam first, and then transported to the finished product warehouse through the fast chain and the slow chain. Usually, the entrance and exit of cold rolling, galvanizing and continuous annealing lines also use walking beams to transport steel coils. Walking beams are divided into entrance walking beams and exit walking beams according to different layout positions. No matter at the entrance or exit, walking beams undertake the task of transporting steel coils across regions and production lines. Once the equipment fails, Will seriously restrict the pace of production. [0003] Generally, in a hydraulic control syst...
Claims
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IPC IPC(8): F15B11/08F15B21/02
CPCF15B11/08F15B21/02F15B2211/86F15B2211/875
Inventor 郑建利马进峰董宇吴子楠刘佳琦
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD