Lifting frame for fast adjustment of to-be-tested area of detonation schlieren

Abstract

The invention provides a lifting frame for fast adjustment of a to-be-tested area of a detonation schlieren and belongs to the field of schlieren experiment devices. The lifting frame comprises a base, a top plate, a fixing supporting assembly, a sliding assembly, a supporting column assembly, a clamp assembly, adjusting screw rods and adjusting screw nuts, wherein a square through hole and a square groove which are matched with the fixing supporting assembly and the sliding assembly are designed in the base and the top plate correspondingly; the fixing supporting assembly and the supporting column assembly serve as force-bearing parts to support the lifting frame; the sliding assembly can perform large-stroke sliding according to the actual size of a detonation chamber; the two adjustingscrew rods are fixed to the fixing supporting assembly and the sliding assembly correspondingly; the clamp assembly and the adjusting screw nuts are assembled while the clamp assembly clamps the detonation chamber; and the detonation chamber can be driven to slide together by rotating the adjusting screw nuts, and thus fast adjustment of the position of the to-be-tested area is achieved. By meansof the lifting frame for fast adjustment of the to-be-tested area of the detonation schlieren, the problems that an existing lifting table is difficult to fix, and the adjusting range and the size supporting range of the detonation chamber are limited can be solved, and support is provided for smoothly carrying out 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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