CN210858336U

CN210858336U - Cabin opening driving mechanism limiting device and cabin opening driving mechanism

Info

Publication number: CN210858336U
Application number: CN201921473050.6U
Authority: CN
Inventors: 刘亮亮; 崔文博; 莫明珠; 赵钢; 范瑞敏
Original assignee: Shenyang Aircraft Design and Research Institute Aviation Industry of China AVIC
Current assignee: Shenyang Aircraft Design and Research Institute Aviation Industry of China AVIC
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-06-26
Anticipated expiration: 2029-09-05

Abstract

The application relates to a drive mechanism stop device opens cabin, it includes: the limiting structure is provided with a limiting body, a first hook part and a second hook part extend outwards from the limiting body to form a first accommodating space and a second accommodating space, and a movable space for the driving mechanism to pass through is formed between the first hook part and the second hook part; and the supporting structure is arranged on the fixed structure and used for supporting the limiting structure. The spacing device of the driving mechanism for opening the cabin can enable the driving mechanism for opening the cabin to avoid over-high requirements on conditions such as structural strength, rigidity and manufacturing precision of a peripheral structure and a normal operation driving mechanism when high-impact working media such as explosive gas are used as working media of the driving mechanism for emergency unlocking, and can also avoid the phenomenon of throwing caused by the fact that the normal operation driving mechanism loses connection support along with the movement of an aircraft after a piston rod of the emergency unlocking driving mechanism is separated, so that the safety of peripheral equipment and the structure is ensured.

Description

Cabin opening driving mechanism limiting device and cabin opening driving mechanism

Technical Field

The application belongs to the technical field of airplane cabin doors, and particularly relates to a cabin opening driving mechanism limiting device and a cabin opening driving mechanism.

Background

The use of two cabin opening drive mechanisms using different working media to achieve normal actuation drive and emergency unlocking drive, respectively, is one of the common forms of aircraft cabin door drive. The normal operation and driving of the cabin door aims at meeting the requirements of personnel and equipment for entering and exiting the cabin, and the performance requirements of driving speed and driving force are relatively low; the emergency unlocking drive needs to unlock the cabin door to provide a precondition of opening the cabin door under a certain flow field condition or a certain clamping and deformation condition of the cabin door structure, and the requirements on the performance of the driving speed and the driving force are relatively high.

As shown in fig. 1, the existing hatch driving mechanism is used in a form that two pieces of first driving mechanism 1 for realizing normal operation driving and second driving mechanism 2 for realizing emergency unlocking driving are directly installed in a butt joint mode. The first driving mechanism 1 is hinged with a bracket 3 on a fixed structure, the second driving mechanism 2 is fixed on the cabin door structure 4 and is connected to a guide groove 51 of the guide mechanism 5 through a roller 41 on the cabin door structure 4, a constant force shearing component is arranged between a piston rod of the second driving mechanism 2 and the shell, the constant force shearing component connects the piston rod and the shell into a whole at ordinary times and shears to separate the piston rod and the shell when working. The two cabin opening driving mechanisms are hinged at the end part.

As shown in fig. 2 and 3, in the normal actuation driving mode, the second driving mechanism 2 does not work, and only acts as a fixed structural member on the integrated door structure 4, and only serves as a connection interface between the door structure 4 and the first driving mechanism 1. Along with the extension driving of a piston rod (or a linear stroke output device such as a lead screw) of the first driving mechanism 1, the second driving mechanism 2 of the emergency unlocking driving and the cabin door structure 4 act together.

As shown in fig. 4, in the emergency unlocking driving mode, the first driving mechanism 1 of the normal operation driving does not work, after the constant force shearing component of the second driving mechanism 2 of the emergency unlocking driving is sheared, the piston rod extends out of the housing, the piston rod is in an immobile state by taking the first driving mechanism 1 as a structural strut in the extending process, the housing drives the cabin door structure 4 to perform translational motion through the guide mechanism 5 connected together, and when the piston rod is separated from the housing at the end of the stroke, the cabin door structure 4 also achieves the unlocking position through the translational motion.

However, although the existing cabin opening driving mechanism is simple in use form, the following problems exist:

a) the selection of working media of the second driving mechanism 2 for emergency unlocking is limited, and when high-impact working media such as explosive gas are used, the requirement on the rigidity condition of peripheral structural environments of equipment such as a fixed structure, a cabin door structure 4 and the like is high, so that the emergency unlocking device is not suitable for being used on a light rack;

b) the structural strength and rigidity of the first drive mechanism 1 for normal steering drive are required to be high, resulting in a large overall weight;

c) the use of the first driving mechanism 1 with larger length and larger axial movable clearance of the piston rod is limited;

d) after the piston rod stroke of the second driving mechanism 2 is separated from the shell, the first driving mechanism 1 loses the connection support, the lower end of the first driving mechanism continues to be connected with the support 3 of the fixed structure, but along with the movement of the aircraft where the fixed structure is located, the other end of the first driving mechanism can form a swinging mode to cause peripheral equipment and structural damage.

Disclosure of Invention

The application aims at providing a cabin opening driving mechanism limiting device and a cabin opening driving mechanism so as to solve any one of the problems.

On one hand, the technical scheme provided by the application is as follows: an open cabin drive mechanism stop device, it includes:

the limiting structure is provided with a limiting body, a first hook part and a second hook part extend outwards from the limiting body to form a first accommodating space and a second accommodating space, and a movable space for a driving mechanism to penetrate through is formed between the first hook part and the second hook part;

and the supporting structure is arranged on the fixed structure and used for supporting the limiting structure.

In an embodiment of the present application, the first hook portion and the second hook portion are symmetrical about a central axis of the limiting body.

In an embodiment of the present application, a plurality of lightening holes or lightening grooves are formed on the limiting structure and the supporting structure.

In an embodiment of the present application, the limiting structure and the supporting structure are made of metal materials.

On the other hand, the technical scheme provided by the application is as follows: an hatch drive mechanism, comprising:

the cabin opening driving mechanism limiting device is arranged on the cabin opening driving mechanism;

a first driving mechanism for normal operation driving;

a second actuating mechanism for emergent unblock driven, second actuating mechanism passes through the connecting piece with first actuating mechanism and is connected, wherein, the connecting piece includes connecting axle, lock nut and gyro wheel, connecting axle and lock nut make first actuating mechanism and second actuating mechanism connect, just the connecting axle have protrusion in first actuating mechanism and/or second actuating mechanism's bulge, bulge at least part is located in first accommodation space and the second accommodation space, make install in the bulge the gyro wheel fall in first accommodation space and the second accommodation space.

In an embodiment of the present application, the first and second receiving spaces have a width greater than a width of the protruding portion.

In an embodiment of the present application, a gap is provided between the roller and the first driving mechanism and/or the second driving mechanism, and an adjusting gasket is provided in the gap.

In one embodiment of the present application, the first drive mechanism is a piston drive or a screw drive; the second driving mechanism is a piston type driving device or a lead screw type driving device.

In one embodiment of the present application, the first drive mechanism has a single lug, the second drive mechanism has two lugs, and the first drive mechanism and the second drive mechanism are connected by a single lug and a double lug.

In one embodiment of the present application, the first driving mechanism has two lugs, the second driving mechanism has one lug, and the first driving mechanism and the second driving mechanism are connected by a single lug and a double lug.

The spacing device of the cabin opening driving mechanism can enable the cabin opening driving mechanism to avoid over-high requirements on conditions such as structural strength, rigidity and manufacturing precision of a peripheral structure and a normal operation driving mechanism on the one hand and on the other hand, can also avoid the phenomenon of throwing caused by the fact that the normal operation driving mechanism loses a connecting support along with the movement of an aircraft after a piston rod of the emergency unlocking driving mechanism is separated, and ensures the safety of peripheral equipment and structures when high-impact working media such as explosive gas are used as working media of the emergency unlocking driving mechanism.

Drawings

In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.

Fig. 1 is a schematic view of the connection of two cabin opening driving mechanisms in the prior art.

Fig. 2 is a schematic view of a prior art normally operated drive mechanism providing an unlocking stroke.

Figure 3 is a schematic view of a prior art door in a folded configuration after unlocking of the drive mechanism by normal operation.

Fig. 4 is a schematic diagram of a prior art emergency unlocking drive mechanism providing an unlocking stroke.

Fig. 5 is a schematic view of the use form of the limiting device of the hatch driving mechanism in the application.

Fig. 6 is a schematic view of a limiting structure in the present application.

Fig. 7 is a schematic view of the connection between the drive mechanism and the stop device in the present application.

Fig. 8 is a schematic view of a drive mechanism providing an unlocking stroke with normal operation of the stop device of the present application.

Figure 9 is a schematic illustration of a door fold-over version after unlocking with the drive mechanism normally operated under the restraint of the present application.

Reference numerals

1-first drive mechanism

2-second drive mechanism

3-support

4-hatch structure, 41-roller

5-guide mechanism, 51-guide groove

6-limiting structure, 61-limiting body, 62-first hook part, 63-second hook part, 64-first accommodating space, 65-second accommodating space, 66-activity space

7-support structure

8-connecting piece, 81-connecting shaft, 82-locking nut, 83-roller and 84-adjusting gasket

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.

In order to solve the problems pointed out in the background art, the invention provides a cabin opening driving mechanism limiting device and a cabin opening limiting driving mechanism using the limiting device, so that when high-impact working media such as explosive gas and the like are used as working media of an emergency unlocking driving mechanism, on the premise of not influencing the operation function, the cabin opening driving mechanism avoids the over-high requirements on the conditions such as the structural strength, the rigidity, the manufacturing precision and the like of a peripheral structural environment and a normal operation driving mechanism on one hand, and on the other hand, after a piston rod of the emergency unlocking driving mechanism is separated, the normal operation driving mechanism loses a connecting support and then causes a throwing phenomenon along with the movement of an aircraft, and the safety of peripheral equipment and structures is ensured.

As shown in fig. 5 and 6, the spacing device of the hatch driving mechanism of the present application mainly comprises a spacing structure 6 and a supporting structure 7 thereof. The limiting structure 6 includes a limiting body 61, and two hook portions, i.e., a first hook portion 62 and a second hook portion 63, extend outwards from the limiting body 61. The hook portion of the first hook portion 62 may form a first accommodation space 64, and the hook portion of the second hook portion 63 may form a second accommodation space 65. A hollow-out active space 66 is arranged between the two hook parts, and the active space 66 is used for a piston rod or a screw rod of a driving mechanism which is normally operated to pass through so as to avoid the interference of the limiting structure 6 and the supporting structure 7 thereof with the movement range of the driving device in the structural appearance. In this embodiment, the movable space 66 is in the shape of a U-shaped groove. The supporting structure 7 is arranged on the fixing structure and can support and fix the limiting structure 6.

It should be noted that the stop structure 6 is supported by the support structure 7 to a desired mounting position and has the necessary structural strength and rigidity, for which purpose both the stop structure 6 and the support structure 7 can be made of metal material. For example, the limiting structure 6 and the supporting structure 7 are made of aluminum alloy materials.

Although in some embodiments, the restraining structure 6 and the support structure 7 are made of lightweight metal materials, in order to reduce the weight of the restraining structure 6 and the support structure 7 to the maximum, a plurality of lightening holes or lightening grooves may be formed in the restraining structure 6 and the support structure 7 to further reduce the weight of the structure.

In the present application, the accommodating spaces 64 to 65 are used for holding the driving mechanism for normal operation after the driving mechanism for emergency unlocking is disconnected, and thus the shapes of the first accommodating space 64 and the second accommodating space 65 should be determined according to the shape of the disconnection portion of the driving mechanism for normal operation. In some embodiments, the driving mechanism breaking portion is symmetrical (see below), so the first hook portion 62 and the second hook portion 63 may be symmetrically disposed about the central axis of the limiting body 61.

As shown in fig. 5 and 7, the present application further provides an opening driving mechanism, which includes, in addition to the above-mentioned opening driving mechanism limiting device, a first driving mechanism 1 for normal operation driving and a second driving mechanism 2 for emergency unlocking driving, where the first driving mechanism 1 and the second driving mechanism 2 are connected by a connecting member 8. The connecting member 8 includes a connecting shaft 81, a locking nut 82 and a roller 83, the connecting shaft 81 passes through the first driving mechanism 1 and the second driving mechanism 2 and connects the two together through the locking nut 82, the connecting shaft 81 has a protruding portion protruding out of the first driving mechanism 1 and the second driving mechanism 2, the roller 83 is installed in the protruding portion, and the roller 83 is approximately entirely located in the first accommodating space 64 and the second accommodating space 65.

In the application, two driving mechanisms limited by the limiting structure are connected in a single-lug and double-lug connection structure mode. That is, in one embodiment, the first driving mechanism has a single lug, the second driving mechanism has a double lug, the single lug and the double lug are connected through a connecting shaft 81 and a lock nut 82, and a roller 83 is installed on the outer side of the double lug. In another embodiment, as shown in fig. 7, the first driving mechanism has a double-lug, the second driving mechanism has a single-lug, the single-lug and the double-lug are connected through a connecting shaft 81 and a locking nut 82, and a roller 83 is also arranged on the outer side of the double-lug.

In order to prevent the two hatch drive mechanisms which need to be restrained from having an angular deviation in the horizontal plane, the width of the hook parts 63-64 at the end of the restraining structure 6 is greater than the width of the rollers 83.

In order to ensure that the roller 84 is aligned with the first hook part 62 and the second hook part 63 which are oppositely arranged, an adjusting gasket 84 is arranged in the gap between the roller and the lug, and the position of the roller 83 is controlled by the distribution quantity of the adjusting gasket 84 on the two sides.

The first driving mechanism 1 for normal operation and the second driving mechanism 2 for emergency unlocking may be piston type driving devices or screw rod type driving devices, and the two driving mechanisms may be piston type driving devices at the same time, or may be a piston type driving device or a screw rod type driving device.

When the two cabin opening driving mechanisms are in butt joint to implement the normal driving function of the cabin door, firstly, a piston rod (or a lead screw) of the first driving mechanism 1 for normal operation of the cabin door extends out to push the guide mechanism to drive the cabin door structure to translate so as to complete the unlocking stroke. At this time, the piston rod (or the lead screw) of the first driving mechanism 1 enters the U-shaped moving space 66 between the hook portions at both sides of the limiting structure 6, and the roller 83 also leaves the restriction range of the hook portion at the end of the limiting structure 6, thereby releasing the restriction of upward rotation. The piston rod (or the lead screw) of the first driving mechanism 1 continuously extends out to complete the driving of normal operation and opening of the cabin door.

When the cabin door structure is driven to translate to complete emergency unlocking, a piston rod (or a lead screw) of the second driving mechanism 2 for emergency unlocking rapidly extends out under the action of a high-impact working medium. Because the piston rod is connected with the piston rod of the first driving mechanism 1 through the connecting shaft 81, the roller 8 at the end part of the connecting shaft 81 and the hook part on the limiting structure 6 are buckled and restrained, so that the hook part on the limiting structure 6 can limit the movement range of the roller 83 and the connecting shaft 81, and the effect of limiting the position of the connecting point between the piston rod of the second driving mechanism 2 and the piston rod of the first driving mechanism 1 is achieved.

Under the condition that the supporting state is influenced by the weak structural strength of the first driving mechanism 1, the large axial movable gap of the piston rod and the like, the direct impact load which is brought to the first driving mechanism 1 by the piston rod of the second driving mechanism 2 is eliminated through the blocking and restraining action of the limiting structure 6. After the unlocking function of the cabin door structure is realized, the piston rod (or the lead screw) of the first driving mechanism 1 is continuously limited in the restriction range of the hook part of the limiting structure 6 by the roller 83 and the connecting shaft 81, and when the aircraft is maneuvered, the situation that the position of the first driving mechanism 1 is changed to generate swinging and hitting on peripheral structures and equipment can be avoided so as to avoid danger.

Due to the blocking effect of the limiting device, the acting force of the piston rod of the second driving mechanism 2 is directly borne by the limiting structure 6 instead of acting on the first driving mechanism 1, so that the conditions of structural strength, rigidity requirement, manufacturing precision requirement and the like of the first driving mechanism 1 are reduced on one hand, and on the other hand, high-impact working media such as explosive gas and the like can be selected for the second driving mechanism 2, the driving performance is improved, and meanwhile, the structure of a matching device and the maintenance workload of related equipment can be simplified. Under the condition that the strength and rigidity conditions of the surrounding structural environment are relatively weak, the piston rod of the second driving mechanism 2 can be caused to swing upwards by the blocking action of the limiting device, so that the stable movement of the guide mechanism and the cabin door structure is influenced. After the upper part of the limiting structure 6 is provided with the hook part, the movable range of the idler wheels 83 on the connecting ends of the two driving mechanisms can be limited to the minimum degree through the hook part when the situation occurs, and the purpose of limiting the upward deflection of the piston rod is achieved. After the piston rod is separated from the shell, the hook part limits the moving range of the roller 83, so long as the piston rod of the first driving mechanism 1 does not extend out to act, the driving mechanism can be limited between the fixed structure and the limiting device, and the phenomenon of throwing and hitting caused by the movement of an aircraft can be avoided, so that potential safety hazards are avoided.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A cabin opening driving mechanism limiting device is characterized in that the limiting device comprises

The limiting structure (6) is provided with a limiting body (61), a first hook part (62) and a second hook part (63) extend outwards from the limiting body (61) to form a first accommodating space (64) and a second accommodating space (65), and a movable space (66) for a driving mechanism to pass through is formed between the first hook part (62) and the second hook part (63);

a support structure (7), the support structure (7) being arranged on the fixed structure for supporting the limit structure (6).

2. An opening drive mechanism limiting device according to claim 1, wherein the first hook part (62) and the second hook part (63) are symmetrical about a central axis of the limiting body (61).

3. A hatch drive mechanism limiting device according to claim 1 or 2, characterised in that the limiting structure (6) and the support structure (7) are provided with a plurality of lightening holes or lightening slots.

4. A hatch drive mechanism limiting device according to claim 3, characterised in that the limiting structure (6) and the support structure (7) are made of a metal material.

5. The cabin opening driving mechanism is characterized by comprising

An hatch drive mechanism limiting device according to any of the claims 1 to 4;

a first drive mechanism (1) for normal operation drive;

a second actuating mechanism (2) for emergent unblock is driven, second actuating mechanism (2) are connected through connecting piece (8) with first actuating mechanism (1), wherein, connecting piece (8) are including connecting axle (81), lock nut (82) and gyro wheel (83), connecting axle (81) and lock nut (82) make first actuating mechanism (1) and second actuating mechanism (2) are connected, just connecting axle (81) have protrusion in the bulge of first actuating mechanism (1) and/or second actuating mechanism (2), the bulge is at least partly located in first accommodation space (64) and second accommodation space (65), make install in the bulge gyro wheel (83) fall in first accommodation space (64) and second accommodation space (65).

6. An hatch drive mechanism according to claim 5, characterised in that the width of the first accommodation space (64) and the second accommodation space (65) is larger than the width of the protruding part.

7. A hatch drive mechanism according to claim 5, characterised in that the roller (83) has a clearance with the first drive mechanism (1) and/or the second drive mechanism (2), in which clearance a regulating washer (84) is arranged.

8. A hatch drive mechanism according to claim 5, characterised in that the first drive mechanism (1) is a piston drive or a screw drive; the second driving mechanism (2) is a piston type driving device or a lead screw type driving device.

9. An hatch drive mechanism according to claim 8, characterized in that the first drive mechanism (1) has a single ear and the second drive mechanism (2) has two ears, the first drive mechanism (1) and the second drive mechanism (2) being connected by a single-double connection.

10. An hatch drive mechanism according to claim 8, characterized in that the first drive mechanism (1) has two ears and the second drive mechanism (2) has one ear, the first drive mechanism (1) and the second drive mechanism (2) being connected by a single-double connection.