Retractable bracket used for screw propeller open water testing device

Abstract

The invention discloses a retractable bracket used for a screw propeller open water testing device. The retractable bracket comprises connection pieces which are connected with the screw propeller open water testing device, and further comprises a retractable rod, wherein the retractable rod is composed of a first rod body and a second rod body, which are vertical and sleeve each other; the first rod body is located on the upper side of the second rod body; the first rod body is a hollow sleeve; the outer diameter of the second rod body is smaller than the inner diameter of the first rod body; the first rod body sleeves the second rod body and the second rod body can do retractable movement along the axis of the first rod body; a locking structure, which is used for locking the second rod body at a needed position so that the second rod body cannot move relative to the first rod body, is arranged between the first rod body and the second rod body; the connection pieces are arranged at the two ends of the retractable rod respectively. With the adoption of the retractable bracket, the water immersing depth of a screw propeller can be adjusted by self-retraction; the retractable bracket can be detached from a guide rail plate and an open water tank and is convenient to maintain.

Description

technical field [0001] The invention relates to the field of ship model testing instruments and equipment, more specifically, relates to a telescopic support for a propeller open water testing device. Background technique [0002] The propeller open water test is an experiment of the propeller model alone in the uniform water flow. The main purpose is to verify and analyze the performance of the propeller. It can be used to correctly select various parameters during design, check and verify theoretical methods, and finally cooperate with self-propulsion tests to analyze propulsion efficiency components and compare the advantages and disadvantages of various related schemes. , to facilitate the selection of the best propeller. [0003] The propeller open water test can be carried out in the ship model test pool, circulating water tank, cavitation water tank or open water test box. The guide rail bracket is usually integrated with the guide rail or the open water tank. Its s...

AI Technical Summary

Problems solved by technology

[0005] The present invention adopts the following technical means to solve the above technical problems: a telescopic support for the propeller open water test device, including a connecting piece for connecting with the propeller open water test device, the telescopic support also includes a telescopic rod, a telescopic rod It is composed of a first rod body and a second rod body that are vertically arranged and nested in each other. The first rod body is on the upper side of the second rod body, wherein the first rod body is a hollow sleeve, and the outer diameter of the second rod body is smaller than that of the first rod body. Inner diameter, the second rod body is sleeved in the first rod body and can perform telescopic movement along the axis of the first rod body. There is a device between the first rod body and the second rod body for locking the second rod body at the required position, so that the second rod body The locking structure that can no longer move relative to the first rod body, the connectors are respectively set at both ends of the telescopic rod

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