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CN-117465678-B - Slide pre-positioning mechanism for emergency cabin door of airplane

CN117465678BCN 117465678 BCN117465678 BCN 117465678BCN-117465678-B

Abstract

The application belongs to the technical field of design of slide pre-positioning mechanisms of aircraft emergency cabin doors, in particular to an aircraft emergency cabin door slide pre-positioning mechanism which is designed to establish connection with a cabin door outer handle and a slide throwing mechanism through a handle tension steel rope and a slide throwing push-pull steel rope, the intermediate rotation of the rotating shaft is used for realizing the switching between the pre-positioning state and the pre-positioning releasing state, and the complex mechanical rod system mechanism is replaced, so that the number of components is small, the weight is light, the force transmission path is short, the reliability is high and the maintainability is good.

Inventors

  • GAN YADONG
  • YU MING

Assignees

  • 中国航空工业集团公司西安飞机设计研究所

Dates

Publication Date
20260505
Application Date
20231116

Claims (5)

  1. 1. The airplane emergency cabin door slide pre-positioning mechanism is characterized by comprising a front support plate (4), a pre-positioning handle (5), a rotating shaft (6), a handle tension steel cable (7), a transmission rocker arm (8), a retaining spring (9), a supporting shaft (10), a cam (11), a rear support plate (13), a hinged rocker arm (15), a slide throwing connection steel cable support (16), a slide throwing push-pull steel cable (17) and a handle connection steel cable support (18); The rear support plate (13) is connected to the inner side of the emergency cabin door (1), the outer side of the emergency cabin door (1) is provided with a cabin door outer handle (3), and the inner side of the emergency cabin door is provided with a slide throwing mechanism (2); The front support plate (4) and the rear support plate (13) are arranged oppositely; the rotating shaft (6) is arranged between the front support plate (4) and the rear support plate (13); The pre-positioning handle (5) is connected with the end part of the rotating shaft (6) extending out of the front support plate (4); the transmission rocker arm (8) is arranged between the front support plate (4) and the rear support plate (13), is sleeved on the rotating shaft (6), and is provided with a single lug with a notch and a circular arc-shaped chute; One end of the handle tension steel cable (7) is connected to the handle (3) outside the cabin door, the other end is provided with a ball head, the end bypasses a circular arc chute on the transmission rocker arm (8) and is clamped into a single lug with a notch, a pin is arranged at the circular arc chute, and the handle tension steel cable (7) is limited; the handle connecting steel cable support (18) is sleeved on the periphery of the handle tension steel cable (7) and is connected between the front support plate (4) and the rear support plate (13); One end of a slide throwing push-pull steel cable (17) is connected to the slide throwing mechanism (2), and the other end is hinged with the transmission rocker arm (8); The slide throwing connection steel cable support (16) is sleeved on the periphery of the slide throwing push-pull steel cable (17) and is connected between the front support plate (4) and the rear support plate (13); The cam (11) is connected to the transmission rocker arm (8) through a bolt, and a cam surface of the cam is provided with a prepositioning positioning groove and a prepositioning releasing positioning groove; the hinged rocker arm (15) is provided with a roller wheel which is hinged on the front support plate (4) and the rear support plate (13); The support shaft (10) is arranged between the front support plate (4) and the rear support plate (13); the retaining spring (9) is connected to the supporting shaft (10) and the hinged rocker arm (15), and the roller on the hinged rocker arm (15) is abutted against the cam surface by virtue of elastic force; the pre-positioning handle (5) can drive the rotating shaft (6) to rotate, so that the transmission rocker arm (8) and the cam (11) rotate, and the slide pre-positioning mechanism of the aircraft emergency cabin door has a pre-positioning state and a pre-positioning releasing state; when the slide pre-positioning mechanism of the aircraft emergency cabin door is in a pre-positioning state, the idler wheels on the hinged rocker arms (15) roll into the pre-positioning grooves, the handle tension steel cable (7) is tensioned, and the slide throwing mechanism (2) is pushed by the slide throwing push-pull steel cable (17) to pre-position the slide; When the slide pre-positioning mechanism of the aircraft emergency cabin door is in a pre-positioning releasing state, the roller on the hinged rocker arm (15) rolls into a pre-positioning releasing positioning groove, the handle tension steel cable (7) is loosened, and the slide throwing mechanism (2) is pulled by the slide throwing push-pull steel cable (17) to release the slide pre-positioning; After the aircraft emergency cabin door (1) is closed, arranging an aircraft emergency cabin door slide pre-positioning mechanism in a pre-positioning state, throwing the slide when the emergency cabin door (1) is opened from the inner side, opening the emergency cabin door (1) from the outer side, and driving a rotating shaft (6) to rotate through a handle tension steel cable (7) when the cabin door outer handle (3) is rotated, so that the aircraft emergency cabin door slide pre-positioning mechanism is changed into the pre-positioning state, and the slide is not thrown; After the aircraft emergency cabin door (1) is closed, the aircraft emergency cabin door slide pre-positioning mechanism is arranged in a pre-positioning releasing state, and when the emergency cabin door (1) is opened from the inner side and the outer side, the slide is not thrown.
  2. 2. An aircraft emergency door slide pre-positioning mechanism according to claim 1, characterized in that, The transmission rocker arm (8) is connected with the rotating shaft (6) through a spline.
  3. 3. An aircraft emergency door slide pre-positioning mechanism according to claim 1, characterized in that, The slide throwing connection steel cable support (16) is connected with the front support plate (4) and the rear support plate (13) through pin shafts.
  4. 4. An aircraft emergency door slide pre-positioning mechanism according to claim 1, characterized in that, The retaining spring (9) is connected to the supporting shaft (10) and the hinged rocker arm (15) through hooks.
  5. 5. The aircraft emergency hatch slide pre-positioning mechanism according to claim 1, further comprising a pre-positioning induction target (12), a pre-positioning induction sensor (14); the prepositioning induction target (12) is connected to the transmission rocker arm (8); the prepositioning induction sensor (14) is connected to the inner side of the emergency cabin door (1); when the airplane emergency cabin door slide pre-positioning mechanism is in a pre-positioning state, the pre-positioning induction target (12) rotates to the induction position of the pre-positioning induction sensor (14); when the aircraft emergency cabin door slide pre-positioning mechanism is in a pre-positioning releasing state, the pre-positioning sensing target (12) rotates to deviate from the sensing position of the pre-positioning sensing sensor (14).

Description

Slide pre-positioning mechanism for emergency cabin door of airplane Technical Field The application belongs to the technical field of design of slide pre-positioning mechanisms of aircraft emergency cabin doors, and particularly relates to an aircraft emergency cabin door slide pre-positioning mechanism. Background The aircraft is provided with an emergency cabin door and is provided with a slide, the emergency cabin door is required to be opened from the inner side when the slide is in a pre-position state under the condition that the cabin door is closed, the slide is thrown, the emergency cabin door is opened from the outer side, the slide is not thrown, the emergency cabin door is opened from the inner side and the outer side when the slide is in a pre-position state, the slide is not thrown, a pre-position mechanism is designed for the purpose, and the cabin door outer handle and the slide throwing mechanism are connected. The existing pre-positioning mechanism is mostly a complex mechanical rod system mechanism, has a large number of parts, has large weight, long force transmission path, low reliability and poor maintainability. The present application has been made in view of the above-described technical drawbacks. It should be noted that the above disclosure of the background art is only for aiding in understanding the inventive concept and technical solution of the present application, which is not necessarily prior art to the present patent application, and should not be used for evaluating the novelty and creativity of the present application in the case where no clear evidence indicates that the above content has been disclosed at the filing date of the present application. Disclosure of Invention The application aims to provide an aircraft emergency cabin door slide pre-positioning mechanism which overcomes or alleviates at least one technical disadvantage of the known aspects. The technical scheme of the application is as follows: an airplane emergency cabin door slide pre-positioning mechanism comprises a front support plate, a pre-positioning handle, a rotating shaft, a handle tension steel rope, a transmission rocker arm, a retaining spring, a support shaft, a cam, a rear support plate, a hinged rocker arm, a slide throwing connection steel rope support, a slide throwing push-pull steel rope and a handle connection steel rope support; The rear support plate is connected to the inner side of the emergency cabin door, an outer cabin door handle is arranged on the outer side of the emergency cabin door, and a slide throwing mechanism is arranged on the inner side of the emergency cabin door; the front support plate and the rear support plate are arranged oppositely; The rotating shaft is arranged between the front support plate and the rear support plate; the pre-positioning handle is connected with the end part of the rotating shaft extending out of the front support plate; The transmission rocker arm is arranged between the front support plate and the rear support plate and sleeved on the rotating shaft, and is provided with a single lug with a notch and a circular arc chute; One end of the handle tension steel cable is connected to the handle outside the cabin door, the other end is provided with a ball head, the end bypasses a circular arc chute on the transmission rocker arm and is clamped into a single lug with a notch, a pin is arranged at the circular arc chute, and the handle tension steel cable is limited; The handle connecting steel cable support seat is sleeved on the periphery of the handle tension steel cable and connected between the front support plate and the rear support plate; one end of the slide throwing push-pull steel cable is connected to the slide throwing mechanism, and the other end is hinged with the transmission rocker arm; the slide throwing connection steel cable support seat is sleeved on the periphery of the slide throwing push-pull steel cable and is connected between the front support plate and the rear support plate; The cam is connected to the transmission rocker arm through a bolt, and the cam surface of the cam is provided with a prepositioning positioning groove and a prepositioning releasing positioning groove; the hinged rocker arm is provided with a roller wheel which is hinged on the front support plate and the rear support plate; The support shaft is arranged between the front support plate and the rear support plate; The holding spring is connected to the supporting shaft and the hinged rocker arm, and the roller on the hinged rocker arm is abutted against the cam surface by virtue of elastic force; the pre-positioning handle can drive the rotating shaft to rotate, so that the transmission rocker arm and the cam rotate, and the slide pre-positioning mechanism of the aircraft emergency cabin door has a pre-positioning state and a pre-positioning releasing state; When the slide pre-positioning mechanism of the aircraft emergency cabin door is in a