A kind of oil cylinder control system and control method
A control system and oil cylinder technology, applied in the fluid pressure actuation system components, servo motor components, servo meter circuits, etc., can solve the problems of high system construction cost, large system back pressure, and hydraulic oil heating, etc., to solve the problem of large flow The effect of back pressure, reducing system heat generation, and reducing cooling system load
Active Publication Date: 2020-06-30
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Problems solved by technology
[0006] Aiming at the problems existing in the prior art, the object of the present invention is to provide an oil cylinder control system and control method to solve the existing problems in the prior art such as large system back pressure, serious heating of hydraulic oil, high system construction cost, and poor versatility , high energy consumption and other issues
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Embodiment 1
[0033] In accordance with the above technical solutions, combined with Figure 1~4 , each letter label in the figure is for the convenience of description. This embodiment provides an oil cylinder control system, which is used to reduce the consumption of oil source, control the expansion and contraction of the oil cylinder 1, and the oil source provides hydraulic oil to the oil cylinder 1. The control system includes a multi-way valve 5 and a first one-way valve 2. The oil cylinder 1 has a rod The chamber is connected to the multi-way valve 5, and the rodless chamber of the oil cylinder 1 is connected to the multi-way valve 5 through the first one-way valve 2. The multi-way valve 5 is preferably a hydraulic control proportional multi-way valve; the oil cylinder control system is also connected to a controller 10. Bypass circuit unit, pressure sensing unit, multi-redundant unit and energy storage unit, the controller 10 is connected to the bypass circuit unit through the press...
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The invention discloses an oil cylinder control system and method for reducing oil source consumption and controlling oil cylinder expansion. The oil cylinder system comprises a multi-way valve and afirst one-way valve, wherein an oil cylinder rod cavity is connected with the multi-way valve; an oil cylinder rodless cavity is connected with the multi-way valve through the first one-way valve; theoil cylinder control system is further provided with a controller, a bypass circuit unit, a pressure sensing unit, a multi redundancy unit and an energy storage unit; the controller is connected withthe bypass circuit unit through the pressure sensing unit, and controls the bypass circuit unit to work through the command of the pressure sensing unit; and the multi redundancy unit is connected with the energy storage unit to control the oil cylinder expansion. According to the oil cylinder control system and method, a bypass circuit is used to achieve the hydraulic cylinder control, so that the system construction cost, the system heating and the cooling system load are reduced; the control system adopts the electro-hydraulic control technology, and has high scalability, so that the automatic control is convenient to achieve; the speed control circuit load adaptability is improved; and the energy-saving effect is better, and the system control accuracy is improved.
Description
technical field [0001] The invention belongs to the field of electro-hydraulic, in particular to an oil cylinder control system and a control method. Background technique [0002] Hydraulic cylinders are widely used in the machinery industry. Hydraulic cylinders generally have two oil chambers, through which oil can be fed into and returned from different chambers to realize the extension and retraction of the piston rod of the cylinder. Restricted by the structure and use of the cylinder, the hydraulic oil action area of the rodless cavity of the general oil cylinder is different from that of the rod cavity. We refer to the ratio of the rodless cavity area to the rod cavity area as the cylinder-rod ratio. The cylinder-rod ratio is generally greater than 1. . When oil enters the rod cavity and returns oil to the rodless cavity, the oil return flow is shown in the following formula. [0003] Q 有 -i·Q 无 [0004] It can be seen from the above formula that when the oil s...
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IPC IPC(8): F15B21/08F15B1/02F15B13/04
CPCF15B1/02F15B13/04F15B21/08F15B2211/25F15B2211/30525F15B2211/6309F15B2211/6313F15B2211/6653F15B2211/6656F15B2211/865
Inventor 凡东鲁飞飞田宏亮常江华孙道明翁寅生
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP