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Adjustment Method of Electric Control Parameters of Proportional Regulating Valve of Twin-cylinder Hydraulic Gate Hoist

A proportional control valve and hydraulic gate technology, which is used in water conservancy projects, marine engineering, coastline protection, etc., can solve problems such as protective shutdown of hydraulic hoists, and achieve the effect of obvious deviation correction, reduction of shutdown frequency, and smooth and stable operation.

Active Publication Date: 2016-03-30
CHANGJIANG SURVEY PLANNING DESIGN & RES
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem that the frequent activation of the synchronous deviation correction function of the current double-cylinder hydraulic gate hoist may easily cause the protective shutdown of the hydraulic gate hoist, the present invention provides a dual-cylinder hydraulic gate hoist proportional adjustment valve electrical control parameter that can quickly and accurately correct the deviation Adjustment method

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  • Adjustment Method of Electric Control Parameters of Proportional Regulating Valve of Twin-cylinder Hydraulic Gate Hoist
  • Adjustment Method of Electric Control Parameters of Proportional Regulating Valve of Twin-cylinder Hydraulic Gate Hoist
  • Adjustment Method of Electric Control Parameters of Proportional Regulating Valve of Twin-cylinder Hydraulic Gate Hoist

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[0032] ΔH max =20mm, ΔH1 =5mm, U 0 = 5V, U max = 9V, U min =1V, Δt=2s.

[0033] 2) Write the functional relationship U between the correction voltage U and the stroke deviation ΔH of the two oil cylinders in the PLC related program module 1 =U 0 +k 1 (U max -U 0 )ΔH 1 / ΔH max , U 2 =U 0 +k 2 (U max -U 0 )ΔH 1 / ΔH max , U 3 =U 0 +k 3 (U max -U 0 )ΔH 1 / ΔH max , when the stroke of the piston rod of the left cylinder is greater than the stroke of the piston rod of the right cylinder H 左 >H 右 , take +, the correction voltage U=5~9V; when the stroke of the piston rod of the left cylinder is less than the stroke of the piston rod of the right cylinder, that is H 左 右 , take -, the correction voltage U = 1 ~ 5V.

[0034] 3) When the double-cylinder hydraulic hoist is started, the piston rods of the left and right oil cylinders are displaced. The stroke detection device converts the stroke signal into an electrical signal and sends it to the PLC. The stroke de...

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Abstract

The invention discloses a method for adjusting electrical control parameters of proportioning valves of a double-cylinder hydraulic gate hoist. Voltage adjusting valves of the proportioning valves of a left oil cylinder and a right oil cylinder are controlled by a PLC (programmable logic controller) of the double-cylinder hydraulic gate hoist to further realize control and acquisition of strokes of piston rods of the left and right oil cylinders. When a stroke difference delta H of the piston rods of the left and right oil cylinders is larger than an allowable deviation threshold delta H1 the strokes of the two cylinders, the proportioning valve in any one of the oil cylinders is adjusted, and voltage values are changed according to change conditions of the acquired stroke difference delta H of the piston rods of the left and right oil cylinders in each deviation change rate examination period until the stroke difference delta H of the piston rods of the left and right oil cylinders is smaller than or equal to the allowable deviation threshold delta H1 the strokes of the two cylinders. The method for adjusting the electrical control parameters of the proportioning valves of the double-cylinder hydraulic gate hoist has the advantages that effectiveness in deviation correction is achieved, a deviation correction function equation is easy to implement by means of PLC (programmable logic controller) programming, and accordingly reliability in operation of a gate is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of gate hoist automatic control technology and the technical field of gate synchronous deviation correction control, and specifically refers to a method for adjusting the electrical control parameters of a proportional regulating valve of a double-cylinder hydraulic gate hoist, which can effectively control the double-cylinder hydraulic opening and closing The stroke difference between the two cylinders of the machine is within the allowable range of gate operation, ensuring safe and reliable operation of the gate Background technique [0002] Large and medium-sized gates are important facilities in water conservancy projects, and play a key role in flood control, drought resistance, water supply and other applications. The gate hoist generally adopts a hydraulic hoist, especially for a gate with a large size and a large distance between lifting points, a double-cylinder hydraulic hoist is used. [0003] In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B7/20
CPCE02B7/20
Inventor 曹阳邵建雄易先举方焱郴秦雅岚潘祥园
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES
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