CN-117002723-B - Lifting device for cabin door of airplane

CN117002723BCN 117002723 BCN117002723 BCN 117002723BCN-117002723-B

Abstract

The invention belongs to the technical field of aircraft design, and particularly relates to an aircraft cabin door lifting device which comprises a connecting piece, a power mechanism, a swing mechanism and a limiting mechanism, wherein one end of the connecting piece is hinged with a door frame of a cabin door through two hinged seats, the power mechanism is arranged on the connecting piece and is in butt joint with the cabin door, the swing mechanism is hinged at one end of the connecting piece, which is far away from the hinged seats, the swing mechanism is hinged with the cabin door, and the limiting mechanism is fixedly connected with the cabin door and the connecting piece. The invention has simple structure and convenient and quick opening and closing of the cabin door.

Inventors

YAN DONGFENG
ZHAO ZEHANG
YE LU
CHEN XI
LI FENGMING
MA PAN
ZHAO GANCHAO
WENG SHUHAO
Ba Liya
Ran Jichao

Assignees

中国民用航空飞行学院

Dates

Publication Date: 20260508
Application Date: 20230906

Claims (3)

1. An aircraft door lifting device, comprising: One end of the connecting piece (2) is hinged with the door frame of the cabin door (1) through two hinging seats (9); the power mechanism is arranged on the connecting piece (2) and is in abutting connection with the cabin door (1); The swinging mechanism is hinged to one end, far away from the hinging seat (9), of the connecting piece (2), and the swinging mechanism is hinged to the cabin door (1); The limiting mechanism is fixedly connected with the cabin door (1) and the connecting piece (2); The power mechanism includes: The screw rod (28) is rotationally connected to the connecting piece (2) through the first bearing (13), the screw rod (28) is vertically arranged with the cabin door (1), and one end of the screw rod (28) far away from the cabin door (1) penetrates out of the connecting piece (2); the rotary disc (12) is coaxially fixedly connected to one end of the screw rod (28) which is transmitted out of the connecting piece (2); The rotating sleeve (14) is positioned in the connecting piece (2) and sleeved on the outer side of the screw rod (28), a second bearing (20) is fixedly connected to the inner edge of the rotating sleeve (14), the second bearing (20) is positioned at one end, far away from the inner side wall of the connecting piece (2), of the rotating sleeve (14), the other end of the screw rod (28) is fixedly connected to the inner edge of the second bearing (20), a sliding groove (21) is formed in the outer side wall of the rotating sleeve (14), and the sliding groove (21) is formed along the length direction of the rotating sleeve (14); A slip ring (18) slidably connected within the rotating sleeve (14) and threadedly connected to the screw (28); The connecting block (19) is in sliding connection in the sliding groove (21), one end of the connecting block (19) stretches into the sliding groove (21) and is fixedly connected with the outer side wall of the sliding ring (18), the other end of the connecting block (19) penetrates out of the sliding groove (21) and is fixedly connected with the push rod (15), and one end, far away from the connecting block (19), of the push rod (15) is abutted with the cabin door (1); the swing mechanism comprises; the mounting plate (3) is vertically fixedly connected in the connecting piece (2); a plurality of rotating seats (8) are fixedly connected to one side, close to the hinging seat (9), of the mounting plate (3), and the rotating seats (8) are arranged at equal intervals from top to bottom; The second swivel (7) is rotationally connected in the rotating seat (8) through a short shaft (22), and the short shaft (22) is vertically arranged; The first rotating shaft (5) is horizontally arranged, and one end of the first rotating shaft (5) is fixedly connected to the outer side wall of the second rotating ring (7); the first rotating ring (6) is rotationally connected to the outer side wall of the first rotating shaft (5); The lantern ring (23) is fixedly connected with the first rotating ring (6) through connecting plates (11), a plurality of connecting plates (11) are arranged in parallel, the lantern ring (23) is rotationally connected with a second rotating shaft (10), and the second rotating shaft (10) is fixedly connected on the cabin door (1); The limiting mechanism comprises; The limiting sleeve (4) is fixedly connected to the mounting plate (3) and is on the same side as the rotating seats (8), and the limiting sleeve (4) is positioned between two upper and lower adjacent rotating seats (8) and is coaxially arranged with the short shaft (22); A rotating rod (24) which is connected in the limit sleeve (4) in a sliding way, the rotating rod (24) does not deviate from the limit sleeve (4), The limiting groove (25) is vertically formed in the side wall of the limiting sleeve (4), the limiting groove (25) is close to the cabin door (1), and the top end of the limiting groove (25) penetrates through the top end of the limiting sleeve (4); The sliding cylinder (26) is horizontally arranged, the sliding cylinder (26) is connected in the limiting groove (25) in a sliding way, and one end of the sliding cylinder (26) extends into the limiting sleeve (4) and is fixedly connected with the outer side wall of the rotating rod (24); the sliding rod (27) is connected in the sliding cylinder (26) in a sliding way, one end of the sliding rod (27) extends out of the sliding cylinder (26) and is fixedly connected with the cabin door (1), and the sliding rod (27) is not separated from the sliding cylinder (26).
2. An aircraft door lifting device according to claim 1, characterized in that the connecting piece (2) is arranged in a 匚 -shape with the opening facing the door (1), and the power mechanism, the swinging mechanism and the limiting mechanism are all located inside the connecting piece (2).
3. An aircraft door lifting device according to claim 1, characterized in that the end of the push rod (15) remote from the connecting block (19) is rotatably connected with a roller (16), the roller (16) being in rolling contact with the door (1).

Description

Lifting device for cabin door of airplane Technical Field The invention belongs to the technical field of aircraft design, and particularly relates to an aircraft cabin door lifting device. Background The opening process of the semi-blocking type cabin door needs to lift the cabin door to avoid the stop block, in the normal case, the semi-blocking type cabin door is provided with a set of independent lifting mechanisms to complete the process, and the lifting mechanisms also need to keep the cabin door in a lifting end state after the cabin door is lifted, bear the gravity of the cabin door, so that the subsequent opening process is completed, therefore, the lifting mechanisms are generally complex, and the design difficulty is high. There is therefore a need for an aircraft door lifting device that solves the above mentioned problems. Disclosure of Invention The object of the present invention is to provide an aircraft door lifting device which solves the above-mentioned problems. In order to achieve the above object, the present invention provides the following solutions: an aircraft door lifting device comprising: One end of the connecting piece is hinged with the door frame of the cabin door through two hinged seats; the power mechanism is arranged on the connecting piece and is abutted with the cabin door; the swinging mechanism is hinged to one end, far away from the hinging seat, of the connecting piece and is hinged with the cabin door; And the limiting mechanism is fixedly connected with the cabin door and the connecting piece. Preferably, the connecting piece is shaped like 匚 and the opening part faces the cabin door, and the power mechanism, the swing mechanism and the limiting mechanism are all located on the inner side of the connecting piece. Preferably, the power mechanism includes: the screw rod is rotationally connected to the connecting piece through a first bearing, the screw rod is perpendicular to the cabin door, and one end of the screw rod, which is far away from the cabin door, penetrates out of the connecting piece; The rotary disc is coaxially fixedly connected with one end of the screw rod, which is transmitted out of the connecting piece; The rotating sleeve is positioned in the connecting piece and sleeved on the outer side of the screw rod, a second bearing is fixedly connected to the inner edge of the rotating sleeve, the second bearing is positioned at one end of the rotating sleeve, which is far away from the inner side wall of the connecting piece, the other end of the screw rod is fixedly connected to the inner edge of the second bearing, a sliding groove is formed in the outer side wall of the rotating sleeve, and the sliding groove is formed along the length direction of the rotating sleeve; the slip ring is connected in the rotating sleeve in a sliding manner and is in threaded connection with the screw rod; the connecting block is in sliding connection in the sliding tray, the one end of connecting block stretch into in the sliding tray and with the lateral wall rigid coupling of sliding ring, the other end of connecting block wears out the sliding tray and rigid coupling have the push rod, the push rod keep away from the one end of connecting block with hatch door butt. Preferably, the swing mechanism includes; the mounting plate is vertically fixedly connected in the connecting piece; the rotating seats are fixedly connected to one side, close to the hinging seat, of the mounting plate, and the rotating seats are arranged at equal intervals from top to bottom; the second swivel is connected in the rotating seat through a short shaft in a rotating way, and the short shaft is vertically arranged; One end of the first rotating shaft is fixedly connected to the outer side wall of the second rotating ring; the first rotating ring is rotationally connected to the outer side wall of the first rotating shaft; The lantern ring is fixedly connected with the first rotating ring through connecting plates, a plurality of connecting plates are arranged in parallel, the lantern ring is rotationally connected with a second rotating shaft, and the second rotating shaft is fixedly connected on the cabin door. Preferably, the limiting mechanism comprises; The limiting sleeve is fixedly connected to the mounting plate and is on the same side as the rotating seat, and the limiting sleeve is positioned between two upper and lower adjacent rotating seats and is coaxially arranged with the short shaft; The rotating rod is connected in the limit sleeve in a sliding way, the rotating rod does not deviate from the limit sleeve, The limiting groove is vertically formed in the side wall of the limiting sleeve, the limiting groove is close to the cabin door, and the top end of the limiting groove penetrates through the top end of the limiting sleeve; The sliding cylinder is horizontally arranged, the sliding cylinder is connected in the limiting groove in a sliding way, and one end of the sliding