Small hydraulic opening and closing machine experimental device for teaching

Abstract

The invention discloses a small hydraulic opening and closing machine experimental device for teaching. The small hydraulic opening and closing machine experimental device comprises a general supportframe, a gate support frame, two connecting rods, a gate, two hydraulic rods, a fixed rod, a fixed block, a gate displacement feedback mechanism, a gate control group mechanism, an oil return tank, anoil pressure pump, a gate electrical control machine cabinet, a gate control cabinet, a bottom sill and a top sill, wherein the gate support frame is arranged on the general support frame; the two connecting rods are hinged to the gate support frame; the gate is connected with the connecting rods; one ends of the two hydraulic rods are hinged with the gate; the fixed rod is connected with the other ends of the hydraulic rods; the fixed block is hinged with the fixed rod and connected with the general support frame; the gate displacement feedback mechanism is connected with one sides of the hydraulic rods; the gate control group mechanism drives the two hydraulic rods to work; the oil return tank is arranged below the gate control group mechanism; the oil pressure pump is connected betweenthe oil return tank and the gate control group mechanism; and the bottom sill is arranged at the bottom end of the gate, and the top sill is arranged at the top end of the gate. The small hydraulic opening and closing machine experimental device has the advantages that the volume is small, the weight is light, the flow direction of the oil in a connecting pipeline can be conveniently observed, the device can be disassembled and assembled, the hydraulic grade of the hydraulic system is low, and teaching training of trainees can be facilitated.

Description

Technical field [0001] The invention relates to the technical field of gates, in particular to an experimental device for a small hydraulic hoist for teaching. Background technique [0002] The hydraulic hoist is generally composed of a hydraulic system and a hydraulic cylinder. Under the control of the hydraulic system, the inner wall of the piston in the hydraulic cylinder performs axial reciprocating motion, thereby driving the connecting rod and gate connected to the piston to perform linear motion to achieve The purpose of opening and closing the orifice. The hydraulic hoist is mainly used in the flood discharge and sand flushing gate control system of hydropower stations. The traditional hydraulic hoist is due to the large size and weight of the gate; the hydraulic oil circuit is enclosed in the valve block and the cylinder, and the oil circuit is invisible, and students can only pass through The principle is to conceive the direction of the oil circuit medium, which is no...

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Problems solved by technology

The hydraulic hoist is mainly used in the flood discharge and sand washing gate control system of the hydropower station, while the traditional hydraulic hoist is large in size and heavy in weight; the hydraulic oil circuit is sealed in the valve group and the oil cylinder, and the oil circuit cannot be seen, so the trainees can only pass through it. It is not conducive to the students' understanding of the principle of the entire hydraulic system to conceive the direction of the oil medium according to the principle; the height of the entire system is relatively high, involving the water facing surface, and there is a risk of falling from a height and falling into the water during on-site work and teaching, especially when the gate and water seal are disassembled , It is difficult to reassemble, which is not conducive to on-site disassembly teaching; the whole system is used for flood control, and the equipment must be in an operational state except for the maintenance period, but the maintenance time is relatively short, and the probability of equipment failure is low, which is not conducive to students' understanding of various failures Learning and mastering; in order to meet the normal opening and closing of the gate and realize the flood discharge function, the hydraulic pressure level of the hydraulic system is usually relatively high, and the flood discharge equipment is not allowed to be operated at will, which is not conducive to safety precautions during on-site teaching and training

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