45results about How to "Test normal" patented technology

The invention discloses a test method for detecting the compressive bearing capacity of a grouting body at the end of a recoverable anchor rod, comprising the following steps: S1. Install the tensionable and recoverable anchor rod top bars on the surface of the grouting body at the top of the recoverable anchor rod S2, start the jack to stretch the bar body, and use the load sensor and displacement meter to collect the tensile displacement and tensile load of the bar body respectively, and draw the tensile load-tensile displacement curve; S3, pass the tensile load - The tensile displacement curve determines the failure node where the grouting body under the bearing plate is damaged, and terminates the test loading after failure; the tensile load of the failure node is the ultimate load of the grouting body at the end of the recoverable anchor rod, and the ultimate load is divided by The compressive safety factor of the grouting body is the compressive bearing capacity of the grouting body; by placing the jack against the surface tensioning bar of the grouting body at the top of the recyclable bolt, the grouting body can achieve self-balance and avoid the grouting body being pulled out and damaged. , to ensure that the grouting body at the pressure-bearing plate is destroyed first, so as to achieve the purpose of testing the compressive bearing capacity of the grouting body on site.

The invention discloses a disk spring hanger with three guide posts and a limiting function, comprising a bottom plate, wherein the bottom plate is connected with the lower ends of the guide posts, a pressing plate is sleeved on the upper parts of the guide posts, the upper end parts of the guide posts above the pressing plate are in threaded connection with guide post nuts, a center hole is arranged in the central position of the pressing plate, a disk spring is arranged between the pressing plate and the bottom plate; the guide posts are in threaded connection with a limiting nut below the pressing plate, the pressing plate and the bottom plate are disk-shaped, the three guide posts are distributed uniformly along the circumferential direction. The invention has the advantages of capable of position limit in pre-operational test, material saving, low cost, and the like.

The invention discloses a device and method for electrochemical hydrogen permeation measurement in a high-temperature environment and belongs to the field of electrochemical hydrogen permeation measurement technologies. The device comprises a cathode chamber, an anode chamber, an external circulating constant-temperature oil bath device, a constant current meter, an electrochemical workstation anda data collection device, wherein an electrolytic solution is contained in the cathode chamber and the anode chamber, organic alcohol with a melting point lower than 80 DEG C and a boiling point greater than 150 DEG C is used as a matrix of the electrolytic solution, phosphoric acid and phosphate are dissolved in the matrix, and the organic alcohol can dissolve the phosphoric acid and the phosphate in an 80-150 DEG C working environment. The test method comprises the steps that a sample is fixed into a double-electrolytic cell, the electrolytic solution is added into the cathode chamber and the anode chamber, and the external circulating constant-temperature oil bath device is utilized to maintain an electrochemical hydrogen permeation test in the cathode chamber and the anode chamber inthe 80-150 DEG C high-temperature environment. Through the device and method, the problem that electrochemical hydrogen permeation is unavailable under the temperature of 80 DEG C or above is solved,the temperature range of the electrochemical hydrogen permeation test is expanded, and important scientific research value is obtained.