Ultra-high hydraulic lifting valve group for double-acting hydraulic oil cylinder

Abstract

The invention relates to a super high hydraulic lift group valve for a double-acting hydraulic cylinder. The lift group valve is characterized in that: the group valve consists of a pilot operated check valve and a one-way throttle valve, wherein the pilot operated check valve is arranged in a valve body; one end of the pilot operated check valve is connected with a rodless cavity oil port of a receiving cylinder, the other end is connected with one end of the one-way throttle valve, and the lower end is respectively connected with an oil inlet of a first valve and an oil inlet of a second valve; the other end of the one-way throttle valve is connected with the rodless cavity oil port of the receiving cylinder. The lift group valve has the advantages that the impact caused by valve closing due to pressure loss of a hydraulic control port of the pilot operated check valve can be effectively avoided .

Description

Ultra-High Hydraulic Lift Manifolds for Double-Acting Hydraulic Cylinders technical field The invention relates to an ultra-high hydraulic lifting valve group for a double-acting hydraulic oil cylinder, which belongs to the technical field of valves. Background technique With the improvement of manufacturing capacity in industry and construction, there are more and more large components ranging from hundreds of tons to thousands of tons. However, the lifting capacity of large cranes on land is generally about 100 tons to 600 tons. , so there is a problem of land lifting of large components. For large components that exceed the range of lifting capacity, manufacturers usually use ultra-high pressure hydraulic cylinders as lifting equipment for cost and feasibility considerations. As a lifting device, the ultra-high hydraulic cylinder has the advantages of scalable lifting capacity, flexible construction, and low total cost. It is precisely because of these advantages of ...

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