阅读说明：本技术 一种舱门提升开启破冰机构 (Hatch door promotes opens mechanism that opens ice ) 是由 马岩 陶金库 李忠霖 杨炎通 张秀丽 李金鹰 于 2020-12-17 设计创作，主要内容包括：本发明属于民机舱门机构领域,提供了一种舱门提升开启破冰机构,具有与舱门结构铰接连接的闩轴,在闩轴上固定连接有闩摇臂；与口框结构固定连接的闩支座,闩支座包括闩功能表面结构和破冰功能表面结构；闩功能表面结构用于阻止舱门因惯性载荷产生的上窜运动,破冰功能表面结构仅在结冰状态下起作用。本机构通过闩机构实现舱门的破冰功效,不需要额外设计破冰机构,简化了舱门的机构形式,减少了零件数量,可以有效降低舱门的机构重量,并提高机构基本可靠性。机构简单,适用范围广。本发明机构传动关系简单,采用的都是常用并且非常成熟的典型机构,本发明可以推广应用到各类具有破冰要求的舱门上。(The invention belongs to the field of civil aircraft cabin door mechanisms, and provides a cabin door lifting opening ice breaking mechanism which is provided with a latch shaft hinged with a cabin door structure, wherein a latch rocker is fixedly connected to the latch shaft; the bolt support is fixedly connected with the mouth frame structure and comprises a bolt functional surface structure and an ice breaking functional surface structure; the latch functional surface structure is used to prevent the upward movement of the hatch door due to inertial loads, and the ice breaking functional surface structure is only active in icing conditions. The mechanism realizes the ice breaking effect of the cabin door through the bolt mechanism, does not need to additionally design an ice breaking mechanism, simplifies the mechanism form of the cabin door, reduces the number of parts, can effectively reduce the mechanism weight of the cabin door, and improves the basic reliability of the mechanism. The mechanism is simple, and the application range is wide. The mechanism of the invention has simple transmission relationship, adopts common and mature typical mechanisms, and can be popularized and applied to various doors with ice breaking requirements.)

1. The utility model provides a hatch door promotes opens mechanism that opens ice which characterized in that: the cabin door lifting, opening and ice breaking mechanism is provided with a latch shaft (2) hinged with a cabin door structure, and a latch rocker (1) is fixedly connected to the latch shaft (2); the bolt support (3) is fixedly connected with the mouth frame structure, and the bolt support (3) comprises a bolt functional surface structure (4) and an ice breaking functional surface structure (5); the bolt functional surface structure (4) is used for preventing the upward movement of the cabin door caused by inertial load, and the ice breaking functional surface structure (5) only acts in an icing state;

the bolt functional surface structure (4) and the ice breaking functional surface structure (5) are integrally in a Pi-like shape;

the bolt functional surface structure (4) is in an L-like shape with an included angle larger than 90 degrees, and the included angle between the bolt rocker arm (1) and the bolt plane is 75 degrees; wherein the latch plane is a plane within the latch functional surface structure (4);

the ice breaking functional surface structure (5) is in a circular arc shape, and the circle center of the ice breaking functional surface structure is positioned in the upper area of the rotating axis of the latch rocker arm (1); the position and the size of the ice breaking functional surface structure (5) are obtained by fitting according to the rotating angle of the latch rocker arm (1) and the lifting height of the cabin door, so that the latch rocker arm (1) is ensured not to be in contact with the ice breaking functional surface structure (5) after rotating angle under the lifting height; under the non-lifting state, the latch rocker arm (1) is in contact with the ice breaking functional surface structure (5) after rotating for an angle;

when the cabin door is normally opened, the moving handle rotates to drive the latch shaft (2) to rotate, the latch shaft (2) drives the latch rocker arm (1) fixedly connected with the latch shaft to rotate, the latch rocker arm (1) rotates to complete the unlocking process of the cabin door, then the cabin door is lifted upwards and opened under the driving of the lifting mechanism, the latch rocker arm (1) rotates under the action of the handle and moves along with the cabin door to be separated from the latch support (3), and the full-motion process is not contacted with the latch support (3);

when the cabin door is frozen, the moving handle rotates to drive the latch shaft (2) to rotate, the latch shaft (2) drives the latch rocker arm (1) fixedly connected with the latch shaft to rotate, and the latch rocker arm (1) rotates to complete the unlocking process of the cabin door; the handle is further rotated, the cabin door cannot be normally lifted due to the obstruction of an ice layer and is still in a closed position, the latch rocker arm (2) is driven by the handle shaft to be in contact with the ice breaking functional surface structure (5) of the latch support (3), ice breaking is realized through knocking between the latch rocker arm and the handle shaft, and the latch rocker arm and the handle shaft are repeatedly knocked when necessary, so that the aim of vibrating and breaking ice is fulfilled.

Technical Field

The invention belongs to the field of civil aircraft cabin door mechanisms, and particularly relates to a mechanism which is applied to a cabin door of a civil aircraft and can break an ice layer possibly existing between the cabin door and a port frame when the cabin door is lifted upwards and opened.

Background

The semi-blocking type translational type cabin door has the advantages of being safer to open under the conditions of residual pressure and the like, almost not occupying the space in the cabin in the opening process, facilitating emergency evacuation of passengers, being more convenient and faster to close the door, being higher in safety and the like, is widely applied to cabin door design of various airplanes all the time, and becomes the most mainstream cabin door design scheme at present.

Such hatch opening is divided into two movement steps of upward lifting and outward opening. Before the hatch door is opened, water vapor condensation may occur between the hatch door structure and the opening frame structure, so that the icing phenomenon is caused, and the hatch door cannot be normally lifted and opened. Therefore, for the machine type with the ice breaking requirement, corresponding ice breaking measures need to be designed, the ice layer is quickly broken, and the normal opening of the cabin door in the icing state is ensured, so that the design requirement that the emergency exit type cabin door specified by the airworthiness regulation CCAR25 is completely opened within 10 seconds is met.

The translation type cabin door of the prior advanced type mostly adopts a mechanism scheme of compressing the hinge arm through the cabin door transmission mechanism to realize upward lifting and opening of the cabin door, and can effectively solve the sinking problem caused by deformation of the hinge arm when the cabin door is opened outwards. However, in the frozen state of the cabin door, if the lifting mechanism breaks ice, a large force is continuously applied to the tail end of the hinge arm serving as the cantilever structure, so that the risk of damaging the hinge arm is caused, and after the ice breaking is completed, the deformation of the hinge arm generates resilience, so that the cabin door vibrates up and down.

Disclosure of Invention

The invention provides a mechanism for lifting and opening a cabin door to break ice, which can efficiently break an ice layer under the condition of icing between a cabin door structure and a mouth frame structure, ensures the quick opening of the cabin door and avoids the damage to the cabin door. Through the mechanism, the problems that ice cannot be broken when the cabin door is opened, the door is blocked when the cabin door is opened, the cabin door vibrates up and down after the cabin door is opened and the like in the prior art are solved.

The technical scheme of the invention is as follows:

a hatch door lifting opening ice breaking mechanism is provided with a latch shaft 2 hinged with a hatch door structure, and a latch rocker arm 1 is fixedly connected on the latch shaft 2; a latch support 3 fixedly connected to the mouth frame structure, the latch support 3 comprising a latch functional surface structure 4 and an ice breaking functional surface structure 5; the bolt functional surface structure 4 is used for preventing the upward movement of the cabin door caused by inertial load, and the ice breaking functional surface structure 5 only acts in an icing state;

the bolt functional surface structure 4 and the ice breaking functional surface structure 5 are integrally in a nearly Pi shape;

the bolt functional surface structure 4 is of an L-like shape with an included angle larger than 90 degrees, and the included angle between the bolt rocker arm 1 and the bolt plane is 75 degrees; wherein the latch plane is a plane within the latch functional surface structure 4;

the ice breaking functional surface structure 5 is in a circular arc shape, and the circle center of the ice breaking functional surface structure is positioned in the upper area of the rotating axis of the latch rocker arm 1; the position and the size of the ice breaking functional surface structure 5 are obtained by fitting according to the rotating angle of the latch rocker arm 1 and the lifting height of the cabin door, so that the latch rocker arm 1 is ensured not to be in contact with the ice breaking functional surface structure 5 after rotating angle under the lifting height; in the non-lifting state, the latch rocker arm 1 is in contact with the ice breaking functional surface structure 5 after rotating for an angle;

when the cabin door is normally opened, the moving handle rotates to drive the latch shaft 2 to rotate, the latch shaft 2 (drives the latch rocker arm 1 fixedly connected with the latch shaft to rotate, the latch rocker arm 1 rotates to complete the unlatching process of the cabin door, then the cabin door is lifted upwards and opened under the driving of the lifting mechanism, the latch rocker arm 1 rotates under the action of the handle and moves along with the cabin door to be separated from the latch support 3, and the whole moving process is not contacted with the latch support 3;

when the cabin door is frozen, the moving handle rotates to drive the latch shaft 2 to rotate, the latch shaft 2 drives the latch rocker arm 1 fixedly connected with the latch shaft to rotate, and the latch rocker arm 1 rotates to complete the unlatching process of the cabin door; the handle is further rotated, the cabin door cannot be normally lifted due to the obstruction of an ice layer and is still in a closed position, the latch rocker arm 2 is driven by the handle shaft to be in contact with the ice breaking functional surface structure 5 of the latch support 3, ice breaking is realized through knocking between the handle shaft and the latch rocker arm, and the latch rocker arm is repeatedly knocked when necessary, so that the aim of vibrating and breaking ice is fulfilled.

The invention has the beneficial effects that:

(1) the mode of knocking and vibrating to break ice is adopted, so that the cabin door can be effectively broken ice in an icing state, the deicing capability of the mechanism is obviously improved, the problem that the cabin door cannot be normally opened due to icing is solved, and the probability that the cabin door cannot be normally opened is reduced.

(2) The mechanism integration level is high. According to the invention, the ice breaking effect of the cabin door is realized through the latch mechanism, an ice breaking mechanism is not required to be additionally designed, the mechanism form of the cabin door is simplified, the number of parts is reduced, the mechanism weight of the cabin door can be effectively reduced, and the basic reliability of the mechanism is improved.

(3) The mechanism is simple, and the application range is wide. The mechanism of the invention has simple transmission relationship, adopts common and mature typical mechanisms, and can be popularized and applied to various doors with ice breaking requirements.

Drawings

Fig. 1 is an isometric view of a hatch door lift open ice breaking mechanism.

Fig. 2 is a schematic diagram of a normal open state of a hatch door lifting opening ice breaking mechanism.

Fig. 3 is a schematic diagram of a lifting opening ice breaking state of a hatch door lifting opening ice breaking mechanism.

Fig. 4 is a movement principle line frame diagram of a hatch door lifting opening ice breaking mechanism.

Fig. 5 is a movement principle line frame diagram of a hatch door lifting opening ice breaking mechanism.

In the figure: 1-latch rocker arm; 2, a latch shaft; 3, a bolt support; 4-latch functional surface structures; 5, an ice breaking functional surface structure; 6, latching; 7, an unlocked position.

Detailed Description

The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.

As shown in fig. 1, 2, 3, 4 and 5, the hatch door lifting opening ice breaking mechanism comprises a latch shaft 2 which is hinged with a hatch door structure, and a latch rocker arm 1 is fixedly connected on the latch shaft 2; a latch support 3 fixedly connected to the mouth frame structure, the latch support 3 comprising a latch functional surface structure 4 and an ice breaking functional surface structure 5; the bolt functional surface structure 4 is used for preventing the upward movement of the cabin door caused by inertial load, and the ice breaking functional surface structure 5 only acts in an icing state;

the bolt functional surface structure 4 and the ice breaking functional surface structure 5 are integrally in a nearly Pi shape;

the bolt functional surface structure 4 is of an L-like shape with an included angle larger than 90 degrees, and the included angle between the bolt rocker arm 1 and the bolt plane is 75 degrees; wherein the latch plane is a plane within the latch functional surface structure 4;

the ice breaking functional surface structure 5 is in a circular arc shape, and the circle center of the ice breaking functional surface structure is positioned in the upper area of the rotating axis of the latch rocker arm 1; the position and the size of the ice breaking functional surface structure 5 are obtained by fitting according to the rotating angle of the latch rocker arm 1 and the lifting height of the cabin door, so that the latch rocker arm 1 is ensured not to be in contact with the ice breaking functional surface structure 5 after rotating angle under the lifting height; in the non-lifting state, the latch rocker arm 1 is in contact with the ice breaking functional surface structure 5 after rotating for an angle;

when the cabin door is normally opened, the moving handle rotates to drive the latch shaft 2 to rotate, the latch shaft 2 (drives the latch rocker arm 1 fixedly connected with the latch shaft to rotate, the latch rocker arm 1 rotates to complete the unlatching process of the cabin door, then the cabin door is lifted upwards and opened under the driving of the lifting mechanism, the latch rocker arm 1 rotates under the action of the handle and moves along with the cabin door to be separated from the latch support 3, and the whole moving process is not contacted with the latch support 3;

when the cabin door is frozen, the moving handle rotates to drive the latch shaft 2 to rotate, the latch shaft 2 drives the latch rocker arm 1 fixedly connected with the latch shaft to rotate, and the latch rocker arm 1 rotates to complete the unlatching process of the cabin door; the handle is further rotated, the cabin door cannot be normally lifted due to the obstruction of an ice layer and is still in a closed position, the latch rocker arm 2 is driven by the handle shaft to be in contact with the ice breaking functional surface structure 5 of the latch support 3, ice breaking is realized through knocking between the handle shaft and the latch rocker arm, and the latch rocker arm is repeatedly knocked when necessary, so that the aim of vibrating and breaking ice is fulfilled.

When in specific use:

the hatch door handle is moved, the latch shaft 1 is driven by the handle to rotate, and the latch rocker arm 2 rotates around the latch shaft 1 to complete the unlatching process of the hatch door. The latch rocker arm 2 moves in between the latch functional surface structure 4 and the ice breaking functional surface structure 5 on the latch abutment 3, during which the latch rocker arm 2 is free of contact with the latch functional surface structure 4 and the ice breaking functional surface structure 5.

The handle is further moved, and under the normal opening state, the cabin door starts to be lifted upwards and opened under the action of the lifting mechanism. The latch shaft 1 moves upwards under the driving of the cabin door structure, meanwhile, the latch rocker arm 2 rotates under the driving of the handle, and the latch rocker arm 2 is separated from the latch support 3 under the action of the composite motion.

When the handle is further moved, the cabin door cannot realize upward lifting movement due to the action of an ice layer in an icing state. The latch rocker arm 2 rotates under the drive of the handle and contacts with the ice breaking functional surface structure 5 of the latch support 3. The handle drives the latch rocker arm 2 to rotate, and the ice breaking functional surface structure 5 is repeatedly knocked until the cabin door is completely iced and can be normally lifted upwards.