Detachable spring pusher mechanism with retaining function
A spring push rod and functional technology, applied in the field of ramjet structure, can solve the problems affecting the adjustable nozzle and ramjet, and achieve the effect of ensuring normal operation, improving reliability and maintainability
Inactive Publication Date: 2020-11-13
BEIJING POWER MACHINERY INST
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Problems solved by technology
In addition, if the mechanism used for limiting the position fails, it will seriously affect the work of the adjustable nozzle and the ramjet engine, so the mechanism must take corresponding measures to prevent function failure
Method used
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[0036] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0037] This embodiment provides a detachable spring push rod mechanism with anti-retraction function, see the attached Figure 1-9 , including: housing 1, limit rod 2, blocking cover 3, direction pin 4, first spring 5, stop pin 6 and second spring 7;
[0038] See attached Figure 10-12 , the housing 1 is a cylinder with a central hole processed at one end and an opening at the other end, a flange is processed at the open end, and a positioning through hole for positioning is processed on the flange; the housing 1 The inner peripheral surface of the central hole end of the housing is processed with a backstop groove 8 along its circumference; the intersection of the two ends of the backstop groove 8 and the inner peripheral surface of the housing 1 is the same double arc transition 9;
[0039] See attached Figure 13 , the limit rod 2 is a rigid rod-shap...
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The invention discloses a detachable spring pusher mechanism with a retaining function. The detachable spring pusher mechanism comprises a shell, a limiting rod, a blanking cap, a direction pin, a first spring, a retaining pin and a second spring, wherein the limiting rod is coaxially installed in an inner cavity of the shell; a third cylindrical section of the limiting rod stretches out of a center hole of the shell; the blanking cap is installed at the opening end of the shell, and an axial blind hole of the blanking cap is matched with the hole axis of a first cylindrical section of the limiting rod; the first spring is installed on the outer portion of the first cylindrical section of the limiting rod; the direction pin is installed in a radial through hole of the blanking cap, and thedirection pin is in sliding fit with a guide groove of the limiting rod; and the retaining pin and the second spring are installed in a blind hole of the limiting rod. By means of the detachable spring pusher mechanism, a reliable limiting effect on a set movement member of an adjustable spraying pipe of a ramjet engine can be achieved, the spring pusher mechanism can be detachable and used repeatedly, therefore, the spring pusher mechanism has the limiting, anti-failure and maintainable functions, and it is ensured that the adjustable spraying pipe of the ramjet engine normally and reliablyworks.
Description
technical field [0001] The invention belongs to the technical field of ramjet structures, and in particular relates to a detachable spring push rod mechanism with a backstop function. Background technique [0002] The adjustable nozzle is an important part of the ramjet engine. It is one of the most important control variables of the ramjet engine to control the working state of the engine by adjusting the throat area of the nozzle. There is a component that can do linear reciprocating motion in the adjustable nozzle of some ramjet engines. For special purposes, the range of motion of this component needs to be limited. The limited position is related to the maximum working throat that the adjustable nozzle can achieve, which is One of the most important parameters must be guaranteed, so it is necessary to design a simple mechanism dedicated to the limit. In addition, if the mechanism used for limiting the position fails, it will seriously affect the work of the adjustabl...
Claims
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Login to View More IPC IPC(8): F02K1/06F02K1/78F02K7/10
CPCF02K1/06F02K1/78F02K7/10
Inventor 白艳琨刘金楠程振璞王永卫牛志刚王健
Owner BEIJING POWER MACHINERY INST