CN110723272B

CN110723272B - Power-assisted buffering reel device of boarding door

Info

Publication number: CN110723272B
Application number: CN201911102286.3A
Authority: CN
Inventors: 钱万涛; 王肖扬; 石荣武; 常飞; 高鹏宇; 李渊; 尚宏元
Original assignee: Zhonghang Electronic Measuring Instruments Co Ltd
Current assignee: Zhonghang Electronic Measuring Instruments Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2022-12-13
Anticipated expiration: 2039-11-12
Also published as: CN110723272A

Abstract

The invention belongs to the field of an airplane boarding door power-assisted structure, and particularly discloses a boarding door power-assisted buffer reel device which comprises a rope fixing device, a rope, a rotating body and an elastic element, wherein the rope fixing device is arranged on the rope; one end of the rope is connected with a rope fixing device used for fixing the rope above the cabin door of the airplane, and the other end of the rope is connected with and wound on the rotating body; the rotating body is connected with an elastic element which overcomes the gravity of the gate through elastic deformation. One end of a rope of the boarding door power-assisted buffer reel device is connected with a rope fixing device, one end of the rope is fixed above an airplane cabin door by the rope fixing device, the other end of the rope is connected and wound on a rotating body, the rotating body is connected with an elastic element, the elastic element can be caused to elastically deform when the rotating body rotates, the gravity of the boarding door is overcome by the elastic force generated by the elastic deformation of the elastic element, and therefore the purpose of power-assisted buffer is achieved; the elastic element of the invention has no oil leakage problem, no pollution, easy maintenance and convenient operation.

Description

Power-assisted buffering reel device of boarding door

Technical Field

The invention belongs to the field of an assisting structure of a boarding door of an airplane, and particularly relates to an assisting buffering reel device in the opening and closing processes of the boarding door.

Background

For an airplane with the boarding gate rotating shaft in the horizontal direction, in the opening and closing processes of the boarding gate, the self weight of the boarding gate has a large moment relative to the boarding gate rotating shaft. In the opening process of the boarding door, large impact is generated in the vertical direction due to the action of gravity, abrasion is caused to the boarding door and the connection part of the cabin and the boarding door, and the sealing and fatigue life of the boarding door are not facilitated; during closing of the gate, the operator needs to provide a large operating torque to overcome the gate weight torque. At present, the opening and closing of the boarding doors of most machine types are completed through a hydraulic control system or completely by the manual operation of a driver. For the light boarding door, a hydraulic control system is adopted to lead the door system to be more complex, and the hydraulic system has the defects of easy oil leakage, easy pollution, difficult maintenance and the like. The opening and closing of the boarding gate are completely completed manually by a driver, the operation process is not convenient, and potential safety hazards exist.

The mechanism is convenient and fast to design, easy to maintain, capable of overcoming the gravity moment, playing a buffering role in the opening process of the boarding door, and playing a boosting role in the closing process of the boarding door is very important.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a power-assisted buffering reel device for a gate.

The invention is realized by the following technical scheme:

a power-assisted buffer reel device of a gate comprises a rope fixing device, a rope, a rotating body and an elastic element; one end of the rope is connected with a rope fixing device used for fixing the rope above the cabin door of the airplane, and the other end of the rope is connected with and wound on the rotating body; the rotating body is connected with an elastic element which overcomes the gravity of the gate through elastic deformation.

Preferably, the elastic element comprises a flat spiral spring and a spring mounting box; the planar spiral spring is arranged in the spring mounting box, one end of the planar spiral spring is fixedly connected and wound on the rotating body, and the other end of the planar spiral spring is fixedly connected to the spring mounting box; the plane spiral spring and the rope are respectively positioned at different positions of the rotor, and the winding center line of the plane spiral spring on the rotor is coincided with the winding center line of the rope on the rotor.

Further, the width of the flat spiral spring close to one end fixed on the spring mounting box is gradually reduced.

Further, the rotating body comprises a winding drum, a rotating shaft, a locking device, a first bearing and a second bearing; the winding drum is arranged in the outer circumferential direction of the rotating shaft, and the winding drum is fixedly connected with the rotating shaft through a locking device; a rope is wound on the winding drum, and a plane spiral spring is wound on the rotating shaft; the spring mounting box is arranged on the outer circumference of the rotating shaft, and the two ends of the spring mounting box are connected with the rotating shaft through a first bearing and a second bearing respectively.

Still further, the spring mounting box comprises a spring box and an end cover; the spring box is set into a U shape, the end cover is connected to the U-shaped notch end of the spring box, the end cover is connected with the rotating shaft through the first bearing, and the spring box is connected with the rotating shaft through the second bearing.

Still further, the spring box is provided with at least three mounting lugs for fixing the spring box on the boarding door.

Furthermore, a limiter used for preventing the rope from being separated from the winding drum is arranged on the outer circumference of the winding drum.

Still further, a gap for sequentially winding the rope on the winding drum in a single layer is formed between the outer circumferential surface of the winding drum and the limiting stopper.

Preferably, the cord securing device is an earmuff coupling.

Preferably, the rope is a steel wire rope.

Compared with the prior art, the invention has the following beneficial technical effects:

one end of a rope of the boarding door power-assisted buffer reel device is connected with a rope fixing device, one end of the rope is fixed above an airplane cabin door by the rope fixing device, the other end of the rope is connected and wound on a rotating body, the rotating body is connected with an elastic element, the elastic element can be caused to elastically deform when the rotating body rotates, the gravity of the boarding door is overcome by the elastic force generated by the elastic deformation of the elastic element, and therefore the purpose of power-assisted buffer is achieved; the invention adopts the elastic element, has no oil leakage problem, no pollution, easy maintenance and convenient operation.

Furthermore, the elastic element comprises a plane spiral spring and a spring mounting box, the plane spiral spring is uniformly deformed after being loaded, and the elastic force is stable.

Further, the rotator of the invention comprises a winding drum, a rotating shaft, a locking device, a first bearing and a second bearing, and the rotator arranged in this way enables the connection between the rope and the flat spiral spring to be more convenient and tight.

Further, the spring mounting box comprises the spring box and the end cover, and the arrangement mode enables the spring mounting box to be mounted more conveniently and quickly.

Furthermore, the spring box is provided with at least three mounting lugs, and the spring box is fixed on the boarding door, so that the fixation is more stable.

Furthermore, the limiting stopper is arranged in the outer circumference direction of the winding drum, and the limiting stopper prevents the rope from falling off the winding drum.

Furthermore, a gap is arranged between the outer circumferential surface of the winding drum and the limiting stopper, and the gap enables the rope to be sequentially wound on the winding drum in a single layer mode.

Furthermore, the rope fixing device is an ear-fork joint which is convenient and quick to use.

Furthermore, the rope is a steel wire rope, and the steel wire rope is connected and fastened.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the flat spiral spring mounting of the present invention;

FIG. 3 is a schematic diagram of the operation of the present invention;

FIG. 4 is a schematic view of the present invention when the gate is opened;

FIG. 5 is a graph showing a relationship between a gravity moment of a conventional gate and an output moment of a wire rope;

FIG. 6 is a graph showing the relationship between the gravity moment of the gate and the output moment of the wire rope after the flat spiral spring of the present invention is applied;

FIG. 7 is an expanded view of the flat spiral spring of the present invention;

FIG. 8 is a schematic view of the trapezoidal section of the flat spiral spring of the present invention.

In the figure: 1 is a rope fixing device; 2 is a rope; 3 is a winding drum; 4 is a rotating shaft; 5 is a locking device; 6 is a limiter; 7 is a spring box; 8 is an end cover; 9 is a flat spiral spring; 10 is a first bearing; 11 is a fixed point between the steel wire rope and the machine; 12 is a gate; 13 is a boarding gate power-assisted buffer reel device; 14 is a boarding gate rotating shaft; 15 is a mounting lug; 16 is the boarding gate closed position; and 17 is a fully open position of the gate.

Detailed Description

The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.

Referring to fig. 1-3, a power-assisted buffer reel device for a gate comprises a rope fixing device 1, a rope 2, a rotating body and an elastic element; one end of the rope 2 is connected with a rope fixing device 1 used for fixing the rope 2 above the cabin door of the airplane, and the other end of the rope 2 is connected with and wound on the rotating body; the rotating body is connected with an elastic element which overcomes the gravity of the gate through elastic deformation.

The elastic element comprises a plane spiral spring 9 and a spring mounting box; the plane spiral spring 9 is arranged in the spring mounting box, one end of the plane spiral spring 9 is fixedly connected and wound on the rotating body, and the other end of the plane spiral spring 9 is fixedly connected to the spring mounting box; the plane spiral spring 9 and the rope 2 are respectively arranged at different positions of the rotor, and the winding center line of the plane spiral spring 9 on the rotor is superposed with the winding center line of the rope 2 on the rotor. The resilient element may also be in the form of a helical spring, a leaf spring, a belleville spring, a ring spring.

The rotating body comprises a winding drum 3, a rotating shaft 4, a locking device 5, a first bearing 10 and a second bearing; the winding drum 3 is arranged in the outer circumferential direction of the rotating shaft 4, and the winding drum 3 is fixedly connected with the rotating shaft 4 through a locking device 5; a rope is wound on the winding drum 3, and a flat spiral spring 9 is wound on the rotating shaft 4; the spring mounting box is arranged on the outer circumference direction of the rotating shaft 4, and the two ends of the spring mounting box are connected with the rotating shaft 4 through a first bearing 10 and a second bearing respectively. The rotor may also be in the form of a combination of a rotating shaft and a bearing.

The spring mounting box comprises a spring box 7 and an end cover 8; the spring box 7 is set to be U-shaped, the end cover 8 is connected at the U-shaped gap end of the spring box 7, the end cover 8 is connected with the rotating shaft 4 through the first bearing 10, and the spring box 7 is connected with the rotating shaft 4 through the second bearing.

The spring box 7 is provided with at least three mounting lugs 15 for fixing the spring box 7 on a boarding door.

A stopper 6 for preventing the rope 2 from being released from the drum 3 is provided in the outer circumferential direction of the drum 3.

A gap for sequentially winding the rope 2 on the winding drum 3 in a single layer is arranged between the outer circumferential surface of the winding drum 3 and the stopper 6.

The rope fixing device 1 is an ear-fork joint.

The locking device 5 is a locking nut.

The rope 2 is a steel wire rope.

As shown in fig. 3, the shaft winder of the boarding gate of the present invention is fixed to the sidewall of the second step of the boarding gate by 6 mounting lugs on the spring box 7, and the ear-fork joint is fixed to the mechanism above the door of the airplane by bolt connection.

In the process of opening and closing the gate, the gate rotates around the gate rotating shaft 14, and the dead weight of the gate generates a gravity moment relative to the gate rotating shaft 14.

When the gate is opened, the gate rotates downward around the gate shaft 14, and the wire rope stroke becomes long. Further, the wire rope drives the winding drum 3 to rotate, and the winding drum 3 and the rotating shaft 4 are fixedly connected through splines. As shown in FIG. 2, the inner ring of the flat spiral spring 9 is fixed in the slot of the rotating shaft 4, and bearings are installed on both sides of the rotating shaft 4. Further, the rotating shaft connected with the winding drum 3 rotates to drive the inner ring of the flat spiral spring 9 to wind tightly. The outer ring of the plane spiral spring 9 is fixed on the outer ring of the spring box, the output torque and the winding number of turns are increased approximately linearly in the winding process of the plane spiral spring 9, and the elastic potential energy of the plane spiral spring 9 is increased. In the opening process of the gate, the output torque of the flat spiral spring 9 is transmitted to the steel wire rope, and the pulling force on the steel wire rope overcomes the self-gravity torque of the gate relative to the torque of the gate rotating shaft 14, so that the buffer function is realized.

When the gate is closed, the gate rotates upward around the gate shaft 14, and the wire rope stroke is shortened. Further, the plane spiral spring 9 is unwound, the plane spiral spring 9 releases elastic potential energy, and the tension on the steel wire rope overcomes the self-gravity moment of the boarding gate relative to the moment of the boarding gate rotating shaft 14, so that the power assisting function is realized.

As shown in fig. 2, the stopper 6 is spaced from the outer diameter of the drum 3 by a suitable gap which ensures sequential winding of a single layer of the wire rope. Meanwhile, a proper gap is reserved between the limiting stopper 6 and the two sides of the winding drum 3, and the gap ensures that the steel wire rope cannot be separated from the side edge of the winding drum 3 in the opening and closing processes of the boarding gate.

The output torque of the flat spiral spring 9 and the winding turns are close to linear relation. As shown in figure 3, the spring box of the reel has 6 mounting lugs, and the mounting lugs are evenly distributed at intervals of 60 degrees. Furthermore, the initial pre-tightening turns of the flat spiral spring 9 can be adjusted by adjusting the installation position of the installation lug, so that the tension on the steel wire rope is adjusted. When the moment of the tensile force on the steel wire rope relative to the boarding gate rotating shaft 14 is larger than the self-gravity moment of the boarding gate, the boarding gate reel rotates clockwise for adjustment. Otherwise, the boarding gate scroll rotates anticlockwise for adjustment.

As shown in fig. 4, which is a schematic working process of a boarding gate reel, in the figure, a is a closing position of the boarding gate, b is a complete opening position of the boarding gate, c is a movement track of a center of gravity of the boarding gate, d is a movement track of the reel, G is a gravity of the boarding gate, F is a tension of a steel wire rope of the reel, L1 is a moment of the gravity and a rotating shaft 14 of the boarding gate, L2 is a moment of the tension of the steel wire rope and the rotating shaft 14 of the boarding gate, and e is a pull-out length of the steel wire rope, and quantification of matching of the moment of the steel wire rope relative to the rotating shaft of the boarding gate and the gravity moment of the boarding gate is obtained:

k is a moment coefficient, when k is 0.65-0.95, the matching of the gravity moment of the gate and the tension moment of the steel wire rope is good, and the buffering and assisting effects of the shaft winder of the gate are obvious.

As shown in fig. 7 and 8, the outer ring of the flat spiral spring 9 is a trapezoidal structure, and the width of the flat spiral spring 9 near the end fixed on the spring mounting box is gradually reduced.

The width b of a typical plane spiral spring 9 is unchanged, the output torque is in direct proportion to the number of winding turns, the curve of the gravity torque of the gate and the output torque of the steel wire rope is shown in figure 5 under the design method, the gravity torque of the gate is larger than the tension torque of the steel wire rope before the point A, the gate can be opened slowly and automatically under the action of gravity, but after the point A, the rebound phenomenon can occur after the gate is opened to the maximum angle due to the fact that the tension torque of the steel wire rope generated by the spring is larger than the tension torque of the steel wire rope, and the rebound phenomenon enables the gate to be unstable in the opening process and inconvenient to use.

The invention corrects the output torque of the flat spiral spring 9 through a new structure, namely, performs trapezoidal correction on a section of the outer ring of the flat spiral spring 9. Before the point A, when the width b of the flat spiral spring 9 is unchanged, the delta F is the tension increment of the steel wire rope corresponding to each winding turn of the winding drum 3. And at the point A, the steel wire rope pulling force Fa is completely opened from the point A to the gate, and the winding drum 3 needs to rotate for n circles. After the point A, the design width of the spring is m & b, m is a correction coefficient, and the determination principle of m is as follows: when the boarding gate is completely opened: (Fa + m · n · Δ F) · L2= G · L1. After correction according to the method, the matching relationship between the gate gravity moment and the steel wire rope output moment is shown in fig. 6.

The above contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention should not be limited thereby, and any modification made on the basis of the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A power-assisted buffering reel device for a gate is characterized by comprising a rope fixing device (1), a rope (2), a rotating body and an elastic element; one end of the rope (2) is connected with a rope fixing device (1) used for fixing the rope (2) above the cabin door of the airplane, and the other end of the rope (2) is connected with and wound on the rotating body; the rotating body is connected with an elastic element which overcomes the gravity of the gate through elastic deformation;

the elastic element comprises a plane spiral spring (9) and a spring mounting box; the plane spiral spring (9) is arranged in the spring mounting box, one end of the plane spiral spring (9) is fixedly connected and wound on the rotating body, and the other end of the plane spiral spring is fixedly connected to the spring mounting box; the plane spiral spring (9) and the rope (2) are respectively positioned at different positions of the rotor, and the winding center line of the plane spiral spring (9) on the rotor is superposed with the winding center line of the rope (2) on the rotor;

the width of the flat spiral spring (9) close to one end fixed on the spring mounting box is gradually reduced.

2. A gate power assisted buffer reel as claimed in claim 1, characterized in that the rotor comprises a reel (3), a rotating shaft (4), a locking device (5), a first bearing (10) and a second bearing; the winding drum (3) is arranged in the outer circumferential direction of the rotating shaft (4), and the winding drum (3) is fixedly connected with the rotating shaft (4) through a locking device (5); a rope is wound on the winding drum (3), and a plane spiral spring (9) is wound on the rotating shaft (4); the spring mounting box is arranged on the outer circumference direction of the rotating shaft (4), and the two ends of the spring mounting box are connected with the rotating shaft (4) through a first bearing (10) and a second bearing respectively.

3. A gate assisted cushioning reel as claimed in claim 2, characterized in that the spring mounting box comprises a spring box (7) and an end cap (8); the spring box (7) is arranged into a U shape, the end cover (8) is connected to the U-shaped notch end of the spring box (7), the end cover (8) is connected with the rotating shaft (4) through a first bearing (10), and the spring box (7) is connected with the rotating shaft (4) through a second bearing.

4. A gate assisted buffer reel as claimed in claim 3, characterized in that the spring box (7) is provided with at least three mounting lugs (15) for fixing the spring box (7) to the gate.

5. A gate power buffer reel as claimed in claim 2, characterized in that the reel (3) is provided with a stop (6) in the direction of the outer circumference for the rope (2) not to come out of the reel (3).

6. A gate power assisted buffer reel as claimed in claim 5, characterized in that a gap for sequential winding of the rope (2) on the reel (3) in a single layer is provided between the outer circumferential surface of the reel (3) and the stopper (6).

7. A gate power assisted buffer reel as claimed in claim 1, characterized in that the rope fixing means (1) is an ear-fork joint.

8. A gate assisted buffer reel as claimed in claim 1, characterized in that the rope (2) is a wire rope.