All-electric ground strength testing device

Abstract

The invention discloses an all-electric ground strength testing device and belongs to the technical field of measurement. The device mainly solves the problems that a hydraulic actuator is high in requirement for environment and low in efficiency, and the detection period of a wedging type technique is long. The device is mainly characterized by comprising an installation machine frame, a pressure sensor, a transmission device, a servo motor, a ball screw, a piston rod, a cylinder barrel, a transition sleeve, a spring, a spring base and a force measurement contact, the cylinder barrel is installed on the machine frame, and the piston rod is located in the cylinder barrel; the ball screw is in thread fitting with the axial center of the piston rod; the transmission device and the servo motor are installed on the cylinder barrel; the pressure sensor is installed on the top of the ball screw; the spring and the spring base are located in the transition sleeve, the spring base is connected with the transition sleeve, and the spring is installed on the bottom of the piston rod; the force measurement contact is installed on the spring base. The device can detect the bearing strength of the ground quickly and accurately so as to meet the requirements of different kinds of equipment for ground strength, and is mainly used for detection the bearing strength of the ground.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a device for detecting ground pressure bearing strength. Background technique [0002] With the continuous development of our country's economy and the strength of our national strength, more and more investment in infrastructure construction, more and more mileage of road and railway construction, and higher and higher requirements for construction quality, but there will still be fraudulent tofu dregs projects . In order to eliminate false projects and improve quality, project monitoring needs to be more accurate. [0003] Some equipment must first test the bearing strength of the ground where it is located before use. Only after the test proves that the ground of the location meets a certain bearing strength can the operation be carried out. For example: mobile lifting equipment, when lifting heavy objects, it is necessary to use the supporting feet to lift t...

AI Technical Summary

Problems solved by technology

[0007] Disadvantages of hydraulic actuator technology: 1. System oil leakage due to seal failure, which affects product reliability is the most common phenomenon in all hydraulic systems

2. The requirements for the environment are relatively high, especially in the harsh environment and the environment with large temperature differences, the seal failure is more frequent

3. The efficiency is low and the response time is slow, especially in the cold field

[0008] Disadvantages of wedging technology: the measured ground strength is related to the length of the insertion rod. The measured ground strength is actually the strength of the soil layer with the same insertion depth as the insertion rod, and cannot truly reflect the strength of the ground when the heavy object stays in a certain place. Bearing capacity, the detection cycle is relatively long

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