A lifting frame for rapid adjustment of the area to be tested for detonation schlieren

Abstract

The present invention proposes a lifting frame for fast adjustment of the area to be tested for detonation schlieren, belonging to the field of schlieren experimental devices, including a base, a top plate, a fixed support assembly, a sliding assembly, a support column assembly, a clamp assembly, an adjustment screw and Adjusting nuts; the base and the top plate are respectively designed with square through holes and square grooves that match the fixed support assembly and the sliding assembly. The fixed support assembly and the support column assembly are used as load-bearing parts to support the lifting frame. The actual size slides with a large stroke, and the two adjusting screws are respectively fixed on the fixed support assembly and the sliding assembly. The clamp assembly holds the detonation chamber and is assembled with the adjustment nut at the same time. By rotating the adjustment nut, the detonation chamber can be driven to slide together, so as to realize the Quick adjustment of the position of the measurement area. The invention can overcome the problems of difficulty in fixing the existing lifting platform, limited adjustment range and size support range of the detonation chamber, and provides support for the smooth development of the detonation schlieren experiment.

Description

technical field [0001] The invention relates to a lifting frame that can quickly adjust the area to be tested in a detonation chamber when the schlieren technique is used to study the propagation process of the detonation wave, and belongs to the field of schlieren experimental devices. Background technique [0002] In the field of detonation research, schlieren is one of the most commonly used optical measurement methods. On the one hand, it is attributed to the simple structure and low cost of the schlieren system. On the other hand, it can directly display the interaction of shock waves in the process of flame propagation. The process helps researchers to understand the mechanism of knock formation. [0003] The common layout of the schlieren system is "Z" shape, that is, the point light source is reflected by the first concave mirror to form parallel light, passes through the area to be tested, and then reflects from the second concave mirror through the knife edge, and ...

AI Technical Summary

Problems solved by technology

First of all, the detonation chamber will generate thrust and slide when it is working, and the table top of the lifting table is mostly smooth, so an additional set of fixtures must be ordered to fix the two, which will greatly increase the cost of the experiment; secondly, for a certain size The height adjustment range of the lifting table is limited (for example, the adjustment range corresponding to the size of the 20×20cm table is generally not more than 30cm), which may not meet the adjustment range required by the experiment; in addition, the detonation chamber is generally placed horizontally on the lifting table, which means When adjusting the area to be tested, it is necessary to move the detonation chamber in the horizontal direction, so the vertical lifting performance of the lifting platform will be useless

Throughout the research at home and abroad, there is still no mechanism that is particularly suitable for the rapid adjustment of the knocking schlieren area to be tested. Therefore, a lifting frame with a simple structure, low cost, and a wide range of application is designed. The smooth development of the schlieren experiment is of great significance

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