Full-hydraulic continuous-penetration static sounding machine with double oil cylinder groups

Abstract

The invention relates to a full-hydraulic continuous-penetration static sounding machine with double oil cylinder groups. Two groups of oil cylinders are adopted and mounted on a frame in a cross shape in a manner of being divided into an upper layer and a lower layer; each group of oil cylinder is fixedly connected together through a cross beam; hydraulic chucks are mounted on the cross beams; stroke limiting switches are mounted below the oil cylinders; a probe rod passes through center inner holes of the two hydraulic chucks; and a hydraulic control system is further provided with valve groups, reversing valves, a hydraulic pump, an electro-hydraulic proportional speed regulating valve KT, a relief valve, a pressure gauge and an oil box. The static sounding machine adopts double oil cylinder group feeding and automatic reversing control; the double hydraulic chucks automatically clamps or loosens the probe rod and automatically achieves continuous uninterrupted feeding through the cooperation of the movement of the oil cylinders; and steady uniform speed feeding is achieved by utilizing the electro-hydraulic proportional speed regulating valve. The static sounding machine has the advantages of simple structure, reliable operation, high efficiency, economy and durability, is convenient for operation, is suitable for the technical field of geotechnical engineering, such as geotechnical engineering, high-speed railway construction, expressway construction and port engineering, and has a wide application prospect.

Description

technical field [0001] The invention relates to a fully hydraulic continuous penetration static penetration penetrating machine with double oil cylinders. Background technique [0002] As a method of in-situ testing of soil in the field of geotechnical engineering technology, static penetration testing is to use the feeding device to penetrate the probe rod with the probe at the bottom into the soil layer, and evaluate parameters such as penetration resistance and friction. The basic physical and mechanical properties of the soil, such as the deformation modulus of the soil, the allowable bearing capacity of the soil, etc. According to the technical specifications of static penetration testing, the probe rod is required to maintain continuous and stable constant-speed feeding during the process of penetrating into the soil layer. The general feeding speed is 2cm / s, so that continuous and stable soil layer test data can be obtained. . Traditional mechanical and hydraulic st...

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Problems solved by technology

Traditional mechanical and hydraulic static penetrating machines, because of the intermittent feed mode of the single oil cylinder group, usually have a significant acceleration process at the beginning of one probe rod, and at the same time between the two probe rods There is a period of pause between them, which is used for the return of the feeding mechanism and the addition of the probe rod, so that the speed of the probe rod penetrating into the soil layer is not uniform, continuous and stable. At the beginning and end of each probe rod due to the penetration The speed does not meet the specification requirements, resulting in bad test data, which affects the acquisition of complete soil layer data

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