Clamping device for bent axle fatigue test

Abstract

The invention relates to a clamping device for a bent axle fatigue test. The clamping device comprises an inner sleeve, an outer sleeve, a compaction sleeve and a vibrating plate, wherein a main journal of a bend axle is arranged in the inner sleeve, the outer sleeve is located in a through hole of the vibrating plate, two conical surfaces which bulge towards the middle are respectively arranged on the outer surface of the inner sleeve and the inner surface of the outer sleeve, two conical surfaces corresponding to the conical surfaces of the inner sleeve and the outer sleeve are correspondingly arranged on the compaction sleeve, the compaction sleeve is symmetrically arranged between the inner sleeve and the outer sleeve from two sides, a connecting bolt is arranged in the middle of the compaction sleeve, the two compaction sleeves move towards the middle through tensioning the connecting bolt on the compaction sleeve so as to extrude the inner sleeve to compact the main journal of the bent axle, the outer sleeve compacts the pore wall of the vibrating plate, and thus the purpose of firmly clamping a bent axle sample on the vibrating plate is realized. The clamping device is reasonable in structure, large in firmness of clamping the sample, and easy to dismantle, and is an ideal clamping device for the bent axle fatigue test.

Description

technical field [0001] The invention relates to a crankshaft strength test device, in particular to a crankshaft fatigue test clamping device. Background technique [0002] The crankshaft fatigue test uses a special fixture to clamp the test crankshaft or crank, and then repeatedly applies a load to a certain point of the fixture through a vibrator or an eccentric wheel to test the fatigue strength of the crankshaft. The expansion sleeve is a keyless connection device, which generates a positive pressure between the expansion sleeve and the shaft or sleeve surface by tightening high-strength bolts, accompanied by friction, and realizes a keyless connection for load transmission. The expansion sleeve connection mainly has the following advantages: no need for high-precision manufacturing tolerances; high strength, stable and reliable connection; easy installation and disassembly; good interchangeability. [0003] At present, the domestic crankshaft fatigue test clamping meth...

AI Technical Summary

Problems solved by technology

[0003] At present, the domestic crankshaft fatigue test clamping method adopts a single inner and outer tapered sleeve to tighten the sample. This clamping method is not easy to tighten for large load tests, and the threaded hole on the outer tapered sleeve is often subjected to increased axial force. But easy to damage, low utilization rate

The crankshaft fatigue test is often unable to be carried out due to the loose clamping of the sample

Images