B-type hydraulic universal tester

Abstract

The invention discloses a B-type hydraulic universal tester, comprising a base, a main cylinder, a main cylinder piston, a testing bench, a lower beam and an upper beam, wherein the main cylinder is arranged inside the base; the main cylinder piston is arranged inside the main cylinder; the testing bench is connected to the upper end of the main cylinder piston; the lower beam is arranged above the testing bench; the upper beam is arranged above the lower beam; upright posts are respectively arranged at two ends of the base, and pass through the lower beam; the upper ends of the upright posts are arranged inside guide holes at two ends of the upper beam; the testing bench is connected with the upper beam through a polish rod; clamps are respectively arranged at the middle position of the upper part of the upper beam and the middle position of the lower part of the lower beam; lifting cylinders are also arranged at two ends of the base; lifting cylinder piston rods are arranged inside the lifting cylinders, and connected with the lower beam; lock cylinders are arranged at two ends of the lower beam; the upright posts pass through the lock cylinders. The B-type hydraulic universal tester has the advantages that mechanical impact is removed, and the reliability and the stability of the tester, and the accuracy and the consistency of the measurement result are improved.

Description

technical field [0001] The invention belongs to the technical field of material testing machines, and relates to a B-type hydraulic universal testing machine used for testing the mechanical properties of various materials. Background technique [0002] Universal testing machine is a device used to test the mechanical properties of various materials. Through tensile and compression tests, the basic mechanical properties of materials can be obtained, such as yield strength, tensile strength, elongation, elastic modulus, etc. [0003] Tensile testing of materials is a destructive test in which the specimen being tested is usually broken by the test force. For high-strength materials, such as metals, the test force is usually larger, and the usual test force range can reach 3000kN. At the moment when the sample breaks, the pressure potential energy stored in the test machine frame, the pressure oil in the pressure circuit and the pressure oil of the main cylinder, and the elas...

AI Technical Summary

Problems solved by technology

However, during the heavy load test, due to the large potential energy accumulated in the frame of the testing machine and the hydraulic system, once the sample 16 is broken, it is composed of the upper beam 13, the polished rod 15, the test bench 8, and the main cylinder plunger 6. The parts will appear "jump up", this kind of "jump up" often causes the limit mechanism 17 to be damaged, thus losing the limit function, if the fault is not discharged in time, the plunger 6 of the main oil cylinder may be damaged. The situation where the pressure oil is pushed out of the cylinder 5

Images