CN202420394U

CN202420394U - Equidistant ring gauge for crankshaft bending fatigue strength test

Info

Publication number: CN202420394U
Application number: CN2012200198907U
Authority: CN
Inventors: 吴朝恩
Original assignee: Xiangfan Fuda Dongkang Crankshaft Co Ltd
Current assignee: Xiangfan Fuda Dongkang Crankshaft Co Ltd
Priority date: 2012-01-17
Filing date: 2012-01-17
Publication date: 2012-09-05
Anticipated expiration: 2022-01-17

Abstract

The utility model provides an equidistant ring gauge for a crankshaft bending fatigue strength test, which is used for detecting the engine crankshaft bending fatigue strength during crankshaft assembling. The ring gauge comprises a semi-circular ring-shaped detection body and a handle, wherein an arc surface of the semi-circular ring-shaped detection body is consistent with an arc surface of a main shaft of a crankshaft; and a cambered surface of the semi-circular ring-shaped detection body is consistent with a fillet of the crankshaft. The ring gauge has the following beneficial effects: in a crank clamping process, the side surfaces of the semi-circular ring-shaped detection body cling to vibration plates, the arc surface of the semi-circular ring-shaped detection body is matched with the arc surface of the main shaft of the crankshaft, the vibration plates and the crankshaft are clamped for detection and the ring gauge is taken down after the detection, thus ensuring the consistency of clearances among the vibration plates on two sides and the crank and ensuring that the arc surface of the main shaft of the crankshaft can not be damaged.

Description

Crankshaft bending fatigue test equidistance ring gauge

Technical field

The utility model relates to the testing tool technical field, is a kind of equidistance ring gauge that is used for the Engine Crankshaft for Bending Fatigue Strength test specifically.

Background technology

Bent axle is one of most important parts of engine; In engine, work under hard conditions; Mainly receive bending, reverse and impulsive force; From crankshaft structure and failure conditions, the main failure mode of bent axle is fatigue break and Bearing score, axis tile, so Crankshaft Fatigue Strength is one of most important performance parameter of bent axle.Domestic test to diesel motor crankshaft fatigue strength performance at present mainly is to carry out repeated bend test; It is good with respect to the crankshaft-link rod centre symmetry to guarantee during repeated bend test that the bent axle list turns in the clamping process; Could guarantee in the repeated bend test process in the weak stressed homogeneity in fillet position of crank throw; Guaranteeing again simultaneously that the bent axle list turns does not injure the king journal fillet in the clamping process, be the best just in time to arrive the fillet place, like this reliability and the accuracy of ability warranty test.What take in the prior art is that the mode of estimating satisfies these requirements, but it is too low to estimate precision, weighs fillet or too far away from the fillet distance when still clamping occurring easily wounded, makes bent axle and vibration plate gap too big, causes test figure inaccurate.

Summary of the invention

For overcoming the deficiency of prior art, the goal of the invention of the utility model is to provide a kind of crankshaft bending fatigue test equidistance ring gauge, to realize detecting conveniently, accurately the distance of vibration plate and crankshaft end-face.

For realizing above-mentioned purpose, the utility model is made up of semi-annular shape detection bodies and handle, and the arc surface of semi-annular shape detection bodies is consistent with the crank spindle arc surface, and the cambered surface of semi-annular shape detection bodies is consistent with the fillet of bent axle.

The utility model compared with prior art; In the crank throw clamping process, the side and the vibration plate of semi-annular shape detection bodies are close to, and arc surface and crank spindle arc surface cooperatively interact; Clamp and detect vibration plate and bent axle; Take off ring gauge after the detection, guarantee the consistance in both sides vibration plate and crank throw gap, do not crush and the crank spindle arc surface.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the A-A cutaway view Amplified image of Fig. 1;

Fig. 3 is the application sketch of the utility model.

Embodiment

Like Fig. 1, Fig. 2, shown in Figure 3; The utility model ring gauge 6 is made up of semi-annular shape detection bodies 1 and handle 2; The arc surface 3 of semi-annular shape detection bodies 1 is consistent with bent axle 4 main shaft arc surfaces, and the cambered surface 5 of semi-annular shape detection bodies 1 is consistent with the fillet of bent axle 4, and the internal diameter of semi-annular shape detection bodies 1 is suitable with bent axle 4 king journal diameters; External diameter is suitable with the king journal bench height, and annulus thickness is suitable with the king journal radius of corner.

During use; The side and the vibration plate of semi-annular shape detection bodies 1 are close to, and the arc surface 3 and the crank spindle arc surface of semi-annular shape detection bodies 1 cooperatively interact, and tighten the screw; Take off ring gauge 6 after the detection, guarantee the consistance in both sides vibration plate and crank throw gap and do not crush the fillet of bent axle 4.

Claims

1. crankshaft bending fatigue test equidistance ring gauge; It is characterized in that: form by semi-annular shape detection bodies (1) and handle (2); The arc surface (3) of semi-annular shape detection bodies (1) is consistent with bent axle (4) main shaft arc surface, and the cambered surface (5) of semi-annular shape detection bodies (1) is consistent with the fillet of bent axle (4).