阅读说明：本技术 一种舱门重复启闭机构 (Repeated opening and closing mechanism for cabin door ) 是由 苏海 陈德强 柴璇 胡海林 王文宏 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种舱门重复启闭机构,包括支撑板；支撑板的左右两端部,分别固定连接有一个弧形导轨；两个弧形导轨相对一侧,与两个舱门的左右两端相滑动配合连接；支撑板下方固定有蒙皮；蒙皮的左右两端,分别与一个弧形导轨固定连接；支撑板的顶面安装有电机；电机的动力输出轴与第一传动轴相连接；第一传动轴前方平行设置第二传动轴；两个传动轴上分别套有相互啮合的第一主驱动齿轮和第二主驱动齿轮；两个传动轴上还分别套有两个齿条驱动齿轮；两个齿条驱动齿轮下侧分别与一个弧形齿条相啮合；两个弧形齿条的外侧分别与一个舱门相连接。本发明能够解决现有火工式开舱方式破坏舱门结构、无法重复启闭舱门的问题,满足重复开舱的要求。(The invention discloses a repeated opening and closing mechanism of a cabin door, which comprises a supporting plate; the left end part and the right end part of the supporting plate are respectively and fixedly connected with an arc-shaped guide rail; the opposite sides of the two arc-shaped guide rails are connected with the left end and the right end of the two cabin doors in a sliding fit manner; a skin is fixed below the supporting plate; the left end and the right end of the skin are respectively fixedly connected with an arc-shaped guide rail; the top surface of the supporting plate is provided with a motor; the power output shaft of the motor is connected with the first transmission shaft; a second transmission shaft is arranged in parallel in front of the first transmission shaft; a first main driving gear and a second main driving gear which are meshed with each other are respectively sleeved on the two transmission shafts; two rack driving gears are respectively sleeved on the two transmission shafts; the lower sides of the two rack driving gears are respectively meshed with an arc-shaped rack; the outer sides of the two arc-shaped racks are respectively connected with one cabin door. The invention can solve the problems that the existing firer type cabin opening mode damages the cabin door structure and can not repeatedly open and close the cabin door, and meets the requirement of repeated cabin opening.)

1. A repeated opening and closing mechanism of a cabin door is characterized by comprising supporting plates (8) which are transversely distributed;

wherein the longitudinal section of the support plate (8) is arc-shaped;

the transverse middle part of the outer side surface of the support plate (8) is fixedly connected with a plurality of arc-shaped support brackets (10);

the middle parts of the outer side surfaces of the plurality of supporting brackets (10) are fixedly connected with the same supporting cross beams (12) which are transversely distributed;

the left end part and the right end part of the supporting plate (8) are respectively and fixedly connected with an arc-shaped guide rail (5);

the middle parts of the outer side surfaces of the two arc-shaped guide rails (5) are fixedly connected with the left end and the right end of the supporting cross beam (12);

wherein, the front end and the rear end of one side of the two arc-shaped guide rails (5) which are opposite are respectively connected with the left end and the right end of a cabin door (6) which is transversely distributed in a sliding fit manner;

wherein, the outer side below the support plate (8) is fixedly provided with a skin (7), and the skin (7) is positioned on the outer side of the support beam (12);

the left end and the right end of the skin (7) are respectively fixedly connected with the inner side end of one arc-shaped guide rail (5);

the edges of the left end and the right end of the front side and the rear side of the skin (7) are respectively welded with an arc-shaped reinforcing edge strip (70);

the tops of the reinforcing edge strips (70) on the front side and the rear side of the skin (7) are respectively fixedly connected with a process beam (9) which is transversely distributed;

wherein, the motor (1) is fixedly arranged at the transverse middle part of the top surface of the supporting plate (8);

the power output shaft on the right side of the motor (1) is connected with the left end of the first transmission shaft (131) through a coupler;

a second transmission shaft (132) is arranged in parallel at the left front part of the first transmission shaft (131);

the left end of the first transmission shaft (131) and the right end of the second transmission shaft (132) are respectively sleeved with a first main driving gear (21) and a second main driving gear (22);

the first main driving gear (21) and the second main driving gear (22) are meshed with each other;

a first rack driving gear (151) and a second rack driving gear (152) are respectively sleeved at the right end of the first transmission shaft (131) and the left end of the second transmission shaft (132);

the lower side of the first rack driving gear (151) is meshed with the first arc-shaped rack (31);

the lower side of the second rack driving gear (152) is meshed with the second arc-shaped rack (32);

the rear end of the first arc-shaped rack (31) and the front end of the second arc-shaped rack (32) are in linkage connection with the inner side face of the adjacent cabin door (6) respectively.

2. Door re-opening and closing mechanism according to claim 1, characterized in that the longitudinal middle position of the skin (7) is fixedly connected to the supporting beam (12).

3. Door re-opening and closing mechanism according to claim 1, characterized in that the support plate (8) is fixedly connected to the support bracket (10), the support beam (12) and the curved guide (5) by means of a plurality of bolt and nut assemblies, respectively.

4. The door re-opening and closing mechanism according to claim 1, wherein the left and right ends of the first transmission shaft (131) and the second transmission shaft (132) are connected to the inner race of a linear bearing (14), respectively;

each linear bearing (14) is fixedly connected with a linear bearing supporting seat (140);

and the linear bearing supporting seat (140) is fixedly connected with the supporting plate (8).

5. The door re-opening and closing mechanism according to claim 1, wherein the outer bottom side of the first arc-shaped rack (31) is connected with the first arc-shaped rack guide rail assembly (111) in a sliding fit manner;

the first rack guide rail assembly (111) is fixedly arranged in a first rack guide rail opening groove which is arranged on the support plate (8) and distributed in an arc shape;

the outer side of the bottom of the second arc-shaped rack (32) is connected with a second rack guide rail component (112) which is distributed in an arc shape in a sliding fit manner;

and the second rack guide rail assembly (112) is fixedly arranged in a second rack guide rail opening groove which is arranged on the support plate (8) and distributed in an arc shape.

6. Hatch door re-opening and closing mechanism according to claim 1, characterized in that the first curved rack (31) and the second curved rack (32), respectively, are connected to an adjacent one of the doors (6) by means of an adjustable rocker (4).

7. The hatch door repeat opening and closing mechanism according to claim 5, characterized in that the first rack guide rail assembly (111) and the second rack guide rail assembly (112) each comprise a guide opening slot (500);

each guide open slot (500) is internally provided with a plurality of pairs of rotatable guide wheels (501) which are symmetrically distributed left and right and are arrayed in an arc shape;

the guide opening groove (500) is used for being connected with the first arc-shaped rack (31) and the second arc-shaped rack (32) in a sliding fit manner;

the bottom surfaces of the first arc-shaped rack (31) and the second arc-shaped rack (32) are contacted with the top surface of the guide wheel (501).

8. The repetitive hatch opening and closing mechanism according to claim 7, characterized in that the rear end of the first curved rack (31) and the front end of the second curved rack (32) are connected to a first connecting block (401), respectively;

the left end and the right end of each first connecting block (401) are respectively hinged with one end of an adjustable rocker (4);

the other end of the adjustable rocker (4) hinged with each first connecting block (401) is hinged with the middle edge of the inner side surface of one end of the adjacent cabin door (6) far away from the supporting plate (8).

9. The repetitive hatch opening and closing mechanism according to claim 8, characterized in that the medial border of the inner side of each hatch (6) near the other end of the support plate (8) is hinged to one end of each of the other two adjustable rockers (4);

for each door, the other ends of the other two adjustable rockers (4) are hinged with a second connecting block (402);

each second connecting block (402) is respectively connected with one arc-shaped limiting strip (403);

each arc-shaped limiting strip (403) is used for being in sliding fit with the outer side part of the guide opening groove (500).

10. The hatch door repeat opening and closing mechanism according to claim 9, characterized in that each adjustable rocker (4) comprises a rocker telescoping arm (4001), a first adjusting nut (4002), a second adjusting nut (4003), a guide bush (4004) and a rocker sleeve (4005);

the rocker telescopic arm (4001) is provided with one end with a hinge hole and is hinged with the first connecting block (401) or the second connecting block (402);

the connecting column arranged at the other end of the rocker telescopic arm (4001) penetrates through the first adjusting nut (4002) and then extends into the inner cavity of the rocker sleeve (4005);

a connecting column at the other end of the rocker arm (4001) extends into the inner cavity of the rocker arm sleeve (4005) and is respectively connected with a second adjusting nut (4003) and a guide sleeve (4004);

one end of each rocker sleeve (4005) with a hinge hole is hinged with one hinge lug on the cabin door (6).

Technical Field

The invention relates to the technical field of cabin door design, in particular to a repeated opening and closing mechanism of a cabin door.

Background

For some specific devices (such as the mother bullet of a shrapnel), which have an opening mechanism thereon, it is necessary to release the articles (such as the sub-ammunition) placed inside through the door by the opening operation. However, if these devices use initiating explosive devices as the power source for opening the cabin, after one cabin opening, the structure of the cabin door is destroyed, and the cabin door cannot be opened again, i.e. the cabin door cannot be opened and closed repeatedly.

For example, for a mother-son warhead (i.e., a shrapnel), the mother-son warhead can effectively increase the killing range by preparing a certain number of bullets in a mother bomb, opening the mother bomb at a predetermined throwing point, and throwing the bullets from the mother bomb to form a certain spreading area and density.

The opening mechanism arranged on the shrapnel is an important component of the shrapnel, and at present, initiating explosive devices are mainly used as a power source for opening the chamber. The opening and throwing of the initiating explosive device has the advantages of high energy density, small volume, fast instantaneous property and the like, so the application is wide. However, the opening of the initiating explosive device inevitably damages the structure, and the secondary dimension and the scattering strike of the hatch cover cannot be realized.

At present, the requirement of secondary/multiple cabin opening shape maintenance and dispersion of the bullet and the bullet is very urgent. The existing initiating explosive device cabin opening mode is difficult to meet the repeated cabin opening and scattering and repeated shape maintenance requirements of the follow-up primary and secondary warhead cabin opening cover.

Therefore, a new mechanism needs to be developed at present, and the problems that the existing firer type cabin opening mode damages the cabin door structure and the cabin door cannot be opened and closed repeatedly can be solved.

Disclosure of Invention

The invention aims to provide a repeated opening and closing mechanism of a cabin door, aiming at the technical defects in the prior art.

Therefore, the invention provides a repeated opening and closing mechanism of a cabin door, which comprises supporting plates which are transversely distributed;

wherein the longitudinal section of the support plate is arc-shaped;

the transverse middle part of the outer side surface of the supporting plate is fixedly connected with a plurality of arc-shaped supporting brackets;

the middle parts of the outer side surfaces of the plurality of supporting brackets are fixedly connected with the same supporting cross beam which is transversely distributed;

the left end part and the right end part of the supporting plate are respectively and fixedly connected with an arc-shaped guide rail;

the middle parts of the outer side surfaces of the two arc-shaped guide rails are fixedly connected with the left end and the right end of the supporting beam;

the front end and the rear end of one side of the two arc-shaped guide rails, which are opposite to each other, are respectively connected with the left end and the right end of a cabin door which is transversely distributed in a sliding fit manner;

wherein, the outer side below the supporting plate is fixedly provided with a skin, and the skin is positioned on the outer side of the supporting beam;

the left end and the right end of the skin are respectively fixedly connected with the inner side end of an arc-shaped guide rail;

the edges of the left end and the right end of the front side and the rear side of the skin are respectively welded with an arc-shaped reinforcing edge strip;

the tops of the reinforcing edge strips on the front side and the rear side of the skin are respectively fixedly connected with a process beam which is transversely distributed;

wherein, the motor is fixedly arranged at the transverse middle part of the top surface of the supporting plate;

the power output shaft on the right side of the motor is connected with the left end of the first transmission shaft through a coupler;

a second transmission shaft is arranged in parallel at the left front part of the first transmission shaft;

a first main driving gear and a second main driving gear are respectively sleeved at the left end of the first transmission shaft and the right end of the second transmission shaft;

the first main driving gear and the second main driving gear are meshed with each other;

the right end of the first transmission shaft and the left end of the second transmission shaft are respectively sleeved with a first rack driving gear and a second rack driving gear;

the lower side of the first rack driving gear is meshed with the first arc-shaped rack;

the lower side of the second rack driving gear is meshed with the second arc-shaped rack;

the rear end of the first arc-shaped rack and the front end of the second arc-shaped rack are respectively in linkage connection with the inner side face of the adjacent cabin door.

Preferably, the longitudinal middle position of the skin is fixedly connected with the supporting cross beam.

Preferably, the supporting plate is fixedly connected with the supporting bracket, the supporting beam and the arc-shaped guide rail through a plurality of bolt and nut assemblies respectively.

Preferably, the left and right ends of the first transmission shaft and the second transmission shaft are respectively connected with the inner ring of a linear bearing;

each linear bearing is fixedly connected with a linear bearing supporting seat;

and the linear bearing supporting seat is fixedly connected with the supporting plate.

Preferably, the outer side of the bottom of the first arc-shaped rack is connected with the first rack guide rail assemblies distributed in an arc shape in a sliding fit manner;

the first rack guide rail assembly is fixedly arranged in a first rack guide rail opening groove which is arranged on the supporting plate and distributed in an arc shape;

the outer side of the bottom of the second arc-shaped rack is connected with the second rack guide rail assemblies in a sliding fit manner, wherein the second rack guide rail assemblies are distributed in an arc shape;

and the second rack guide rail assembly is fixedly arranged in a second rack guide rail opening groove which is arranged on the supporting plate and distributed in an arc shape.

Preferably, the first arc-shaped rack and the second arc-shaped rack are respectively connected with an adjacent cabin door through an adjustable rocker.

Preferably, the first rack guide rail assembly and the second rack guide rail assembly respectively comprise guide open grooves;

each guide open slot is internally provided with a plurality of pairs of rotatable guide wheels which are symmetrically distributed left and right and are arrayed in an arc shape;

the guide open slot is used for being connected with the first arc-shaped rack and the second arc-shaped rack in a sliding fit manner;

the bottom surfaces of the first arc-shaped rack and the second arc-shaped rack are contacted with the top surface of the guide wheel.

Preferably, the rear end of the first arc-shaped rack and the front end of the second arc-shaped rack are respectively connected with a first connecting block;

the left end and the right end of each first connecting block are respectively hinged with one end of an adjustable rocker;

the other end of the adjustable rocker hinged with each first connecting block is hinged with the middle edge of the inner side surface of one end of the adjacent cabin door far away from the supporting plate.

Preferably, the middle edge of the inner side surface of each cabin door close to the other end of the support plate is respectively hinged with one end of each of the other two adjustable rockers;

for each cabin door, the other ends of the other two adjustable rockers are hinged with a second connecting block;

each second connecting block is connected with one arc-shaped limiting strip;

each arc-shaped limiting strip is used for being in sliding fit with the outer side part of the guide open slot.

Preferably, each adjustable rocker comprises a rocker telescopic arm, a first adjusting nut, a second adjusting nut, a guide sleeve and a rocker sleeve;

the rocker telescopic arm is provided with one end with a hinge hole and is used for being hinged with the first connecting block or the second connecting block;

the connecting column is arranged at the other end of the rocker arm and penetrates through the first adjusting nut to penetrate into the inner cavity of the rocker arm sleeve;

the connecting column at the other end of the rocker arm extends into the inner cavity of the rocker sleeve and is respectively connected with a second adjusting nut and a guide sleeve;

one end of each rocker sleeve with a hinge hole is hinged with one hinge lug on the cabin door.

Compared with the prior art, the technical scheme provided by the invention has the advantages that the repeated cabin door opening and closing mechanism is scientific in structural design, the problems that the structure of the cabin door is damaged and the cabin door cannot be opened and closed repeatedly in an existing fire type cabin opening mode can be solved, the requirement for repeated cabin opening can be met, and the repeated cabin door opening mechanism has great production practice significance.

The invention realizes the repeated opening and closing of the cabin door by utilizing the gear rack mechanism, and finally realizes the repeated cabin opening dimensional shape of the cabin door in a non-firer mode.

Drawings

Fig. 1a is a schematic perspective view of a repetitive opening and closing mechanism for a cabin door according to the present invention;

fig. 1b is a schematic perspective view of a repetitive opening and closing mechanism of a hatch door provided by the present invention;

FIG. 1c is an enlarged schematic view of the middle region of FIG. 1 b;

FIG. 1d is an enlarged view of a portion of FIG. 1 c;

fig. 1e is a schematic perspective view of the repetitive opening and closing mechanism of the hatch door provided by the present invention when the hatch door is placed upside down (at this time, the covering is not shown);

FIG. 1f is an enlarged view of a portion of FIG. 1 e;

fig. 2 is a three-dimensional schematic view of a repetitive opening and closing mechanism of a cabin door provided by the invention;

FIG. 3 is a partially enlarged schematic view of FIG. 2;

FIG. 4 is a schematic perspective view of a door re-opening and closing mechanism according to the present invention, wherein an adjustable rocker is provided;

fig. 5 is a schematic perspective exploded view of a hatch door re-opening and closing mechanism provided by the present invention, wherein an adjustable rocker is provided.

Detailed Description

In order to make the technical means for realizing the invention easier to understand, the following detailed description of the present application is made in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In addition, it should be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the term "mounted" and the like should be interpreted broadly, and may be, for example, either fixedly mounted or detachably mounted.

The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.

Referring to fig. 1a to 5, the present invention provides a repetitive opening and closing mechanism for a door, which is installed on an arc opening (e.g. a quarter-circle arc opening) reserved in an external device, and comprises support plates 8 distributed transversely;

wherein, the longitudinal section of the support plate 8 is arc-shaped;

a plurality of arc-shaped supporting brackets 10 are fixedly connected to the transverse middle part of the outer side surface (namely the bottom surface) of the supporting plate 8;

the middle parts of the outer side surfaces (namely the bottom surfaces) of the plurality of supporting brackets 10 are fixedly connected with the same supporting cross beam 12 which is transversely distributed;

the left end part and the right end part of the supporting plate 8 are respectively and fixedly connected with an arc-shaped guide rail 5;

wherein, the middle parts of the outer side surfaces (namely the bottom surfaces) of the two arc-shaped guide rails 5 are fixedly connected with the left end and the right end of the supporting beam 12;

wherein, the front end and the rear end of one side of the two arc-shaped guide rails 5 opposite to each other are respectively connected with the left end and the right end of a cabin door 6 which is transversely distributed in a sliding fit manner;

it should be noted that the left and right ends of the cabin door 6 can slide in the arc-shaped guide rail 5; the sliding fit structure of the prior art can be specifically adopted, for example, the left and right ends of the cabin door are respectively provided with an arc-shaped limiting convex block (sliding block) for sliding fit with the guide groove on the arc-shaped guide rail 5, which is the prior art structure and is not described herein again.

Wherein, the outer side below the support plate 8 is fixedly provided with a skin 7, and the skin 7 is positioned at the outer side of the support beam 12;

the left end and the right end of the skin 7 are respectively fixedly connected with the inner side end of an arc-shaped guide rail 5;

the edges of the left end and the right end of the front side and the rear side of the skin 7 are respectively welded with an arc-shaped reinforcing edge strip 70;

the tops of the reinforcing edge strips 70 at the front side and the rear side of the skin 7 are respectively fixedly connected (for example, through bolts) with a transversely distributed technical beam 9;

wherein, the motor 1 is fixedly arranged at the transverse middle part of the top surface of the supporting plate 8;

the power output shaft on the right side of the motor 1 is connected with the left end of the first transmission shaft 131 through a coupler;

a second transmission shaft 132 is arranged in parallel at the left front of the first transmission shaft 131;

the left end of the first transmission shaft 131 and the right end of the second transmission shaft 132 are respectively sleeved with a first main driving gear 21 and a second main driving gear 22;

the first main drive gear 21 and the second main drive gear 22 are meshed with each other;

a first rack driving gear 151 and a second rack driving gear 152 are respectively sleeved at the right end of the first transmission shaft 131 and the left end of the second transmission shaft 132;

the lower side of the first rack driving gear 151 is engaged with the first arc-shaped rack 31;

the lower side of the second rack drive gear 152 is meshed with the second arc-shaped rack 32;

the rear end of the first arc-shaped rack 31 and the front end of the second arc-shaped rack 32 are linked with the inner side of the adjacent cabin door 6 respectively.

It should be noted that, for the present invention, the supporting plate 8, the supporting bracket 10 and the supporting beam 12 are the main supporting components of the mechanism of the present invention; the arc-shaped guide rail 5 and the technical beam 9 form the main body appearance of the mechanism.

It should be further noted that, for two craft beams 9, the two craft beams are correspondingly and fixedly installed on a notch (for example, an arc-shaped notch) reserved on one device, and the shape and size of the whole mechanism of the invention are correspondingly matched with the shape and size of the notch. For example, it may be fixedly mounted to a cutout in a device whose body is cylindrical or otherwise shaped (e.g., a cylindrical or otherwise shaped cutout in the body of a shrapnel).

In the present invention, in a specific implementation, when each door 6 moves to the highest position along the curved rail 5, the corresponding position (i.e. the outboard direction) of the door is free of skin.

In the present invention, in a practical implementation, the longitudinal central position of the skin 7, fixedly connected to the supporting cross-member 12 (by means of a plurality of bolt-and-nut assemblies), forms the outer surface of the mechanism of the invention, so as to maintain the aerodynamic profile of the mechanism of the invention.

In the present invention, in a specific implementation, the support plate 8 is fixedly connected to the support bracket 10, the support beam 12 and the arc-shaped guide rail 5 through a plurality of bolt and nut assemblies, respectively.

In the present invention, the left and right ends of the first transmission shaft 131 and the second transmission shaft 132 are respectively connected to the inner ring of a linear bearing 14;

each linear bearing 14 is fixedly connected with a linear bearing support seat 140;

and the linear bearing supporting seat 140 is fixedly connected with the supporting plate 8 (through a bolt and nut assembly).

It should be noted that the portion of the second transmission shaft 132 between the second rack drive gear 152 and the second main drive gear 22, and the portion of the first transmission shaft 131 between the first rack drive gear 151 and the first main drive gear 21 are also connected to the inner race of one linear bearing 14, respectively.

In the present invention, in a specific implementation, the outer side of the bottom of the first arc-shaped rack 31 is connected with the first rack guide rail assemblies 111 distributed in an arc shape in a sliding fit manner;

the first rack guide rail assembly 111 is fixedly arranged in a first rack guide rail opening groove which is arranged on the support plate 8 and distributed in an arc shape;

the outer side of the bottom of the second arc-shaped rack 32 is connected with the second rack guide rail assembly 112 which is distributed in an arc shape in a sliding fit manner;

and the second rack guide rail assembly 112 is fixedly installed in a second rack guide rail opening groove which is arranged on the support plate 8 and distributed in an arc shape.

It should be noted that, for the present invention, the motor 1 and the two rack guide rail assemblies are fixed on the support plate 8. The first rack guide rail assembly 111 and the second rack guide rail assembly 112 are identical in shape and configuration.

In the present invention, in a specific implementation, the first arc-shaped rack 31 and the second arc-shaped rack 32 are respectively connected with an adjacent hatch door 6 through an adjustable rocker 4.

In the present invention, in a specific implementation, the first rack guide rail assembly 111 and the second rack guide rail assembly 112 respectively include a guide opening groove 500;

each guide open slot 500 is internally provided with a plurality of pairs of rotatable guide wheels 501 which are symmetrically distributed left and right and are arrayed in an arc shape;

the guide opening groove 500 is used for being connected with the first arc-shaped rack 31 and the second arc-shaped rack 32 in a sliding fit manner;

the bottom surfaces of the first and second arc-shaped racks 31 and 32 are in contact with the top surface of the guide wheel 501.

In the present invention, in a specific implementation, the rear end portion of the first arc-shaped rack 31 and the front end portion of the second arc-shaped rack 32 are respectively connected to a first connecting block 401;

the left end and the right end of each first connecting block 401 are respectively hinged with one end of an adjustable rocker 4;

the other end of the adjustable rocker 4 hinged to each first connecting block 401 is hinged to the middle edge of the inner side surface of the end of the adjacent cabin door 6 far away from the supporting plate 8.

In the invention, in the concrete implementation, the middle edge of the inner side surface of each cabin door 6 close to the other end of the supporting plate 8 is respectively hinged with one end of the other two adjustable rockers 4;

for each door, the other ends of the other two adjustable rockers 4 are hinged with a second connecting block 402;

each second connecting block 402 is connected with an arc-shaped limiting strip 403;

each arc-shaped spacing bar 403 is used for sliding fit with the outside part of the guide opening groove 500 (i.e. the outside part is a spacing bar guide groove 502, and the spacing bar guide groove 502 is located outside the guide wheel 501).

In the invention, each adjustable rocker 4 comprises a rocker telescopic arm 4001, a first adjusting nut 4002, a second adjusting nut 4003, a guide sleeve 4004 and a rocker sleeve 4005;

the rocker telescopic arm 4001 is provided with one end with a hinge hole and is hinged with the first connecting block 401 or the second connecting block 402;

the connecting column arranged at the other end of the rocker arm 4001 penetrates through the first adjusting nut 4002 and then extends into the inner cavity of the rocker arm sleeve 4005;

a connecting column at the other end of the rocker arm 4001 extends into the inner cavity of the rocker arm sleeve 4005 and is respectively connected with a second adjusting nut 4003 and a guide sleeve 4004;

each rocker sleeve 4005 has one end with a hinge hole, which is hinged to a hinge projection on the cabin door 6 (the hinge projection is provided with a hinge hole, which is hinged via a connecting pin)

It should be noted that the adjustable rocker 4 can adjust the amount of expansion, and the two adjustable rockers 4 are respectively used for connecting the first arc-shaped rack 31 and one of the hatches 6, and the second arc-shaped rack and the other hatche 6. The adjustable rocker 4 can adjust the free amount of radial displacement and transmit the locking force for closing the cabin door 6.

It should be noted that, with the present invention, the first arc-shaped rack 31 and the second arc-shaped rack 32 can slide in the first rack guide rail assembly 111 and the second rack guide rail assembly 112, respectively.

It should be noted that, with the present invention, the first main driving gear 21 and the second main driving gear 22 are engaged with each other, so that power can be transmitted to the first arc-shaped rack 31 and the second arc-shaped rack 32 through the first rack driving gear 151 and the second rack driving gear 152, respectively, so that the first arc-shaped rack 31 and the second arc-shaped rack 32 can slide in the first rack guide rail assembly 111 and the second rack guide rail assembly 112, respectively. When sliding, the first arc-shaped rack 31 and the second arc-shaped rack 32 drive the two ends of the connected cabin door 6 to slide in the arc-shaped track 5, so that the opening and closing of the cabin door can be realized. Wherein the hatch 6 is closed when sliding upwards and open when sliding downwards.

In the present invention, in a concrete implementation, the power output shaft of the motor 1 is coaxial with the first transmission shaft on which the first main driving gear 21 is mounted; the first and second main drive gears 21 and 22 corresponding to the two hatches 6 are engaged with each other, while the first and second rack drive gears 151 and 152 corresponding to the two hatches 6 are engaged with the first and second arc-shaped racks 31 and 32, respectively.

In the invention, the skin 7 is 6061 aluminum alloy, the whole skin 7 is subjected to anodic oxidation treatment, the thickness is 3mm, in order to increase the integral rigidity of the skin 7, reinforcing strips 70 are welded on the two horizontal sides of the skin 7, and the reinforcing strips 70 are in bolt connection with the process beams 9.

In the invention, the motor 1 is a band-type brake motor, namely a motor with a band-type brake device, and can be tightly locked under the condition that a power supply is cut off, so that the self-locking of the closed cabin door can be realized.

In the invention, the cabin door 6 is made of aluminum alloy plates by roll bending and milling.

In a specific implementation, each door 6 has a gap of 1.5mm from the inner wall of the skin 7 on the side facing the skin 7 (i.e. the lower side);

the cabin door 6 is positioned above the skin 7;

a sealing strip is stuck in the gap;

the sealing strip is transversely stuck on the inner wall of the skin 7.

It should be noted that the working principle of the present invention is as follows: the invention applies rack and pinion transmission to the repeated opening and closing process of the cabin door, the gear is driven by the motor, the rack is stressed and drives the cabin door to move in pairs, and the cabin door slides in the arc-shaped guide rail, thereby realizing synchronous opening and closing actions.

In the process of opening the cabin, the cabin door is retracted inwards along the arc-shaped guide rail, so that the aerodynamic appearance can be better maintained and the flight resistance can be reduced in high-speed flight. The motor is provided with a band-type brake device (namely the motor 1 is a band-type brake motor), and can tightly lock the motor under the condition that a power supply is cut off, so that the self-locking of the closed cabin door can be realized.

With the present invention, during the opening and closing of the door, the adjustable rocker 4 moves radially, ensuring that the door 6 does not interfere with the skin 7 in the outboard direction during the closing, and that the outer surface of the closed door 6 remains flush with the outer surface of the skin 7 (the skin 7 has a door opening for receiving the door in a position corresponding to each door 6). The adjustable rocker 4 also plays a role in applying radial locking force to the cabin door 6, and the sealing requirement of the closed state of the cabin door is ensured.

It should be noted that, for the present invention, the motor 1 drives the two main driving gears to rotate, the two rack driving gears coaxial with the two main driving gears are respectively engaged with the two arc-shaped racks, so as to drive the arc-shaped racks to slide, and the arc-shaped racks drive the cabin door 6 to slide in the arc-shaped guide rail 5 through the adjustable rocker 4, so as to realize the repeated opening and closing of the cabin door 6.

In order to more clearly understand the technical solution of the present invention, the following explains the operation principle of the present invention.

For the invention, the specific operation steps are as follows when in work:

the method comprises the following steps: the motor 1 drives the two transmission shafts and the two main driving gears and the rack driving gears on the two transmission shafts to rotate through the shaft coupling;

step two: the main driving gears on different transmission routes of the two hatches 6 are meshed in pairs (namely, the first main driving gear 21 and the second main driving gear 22 are meshed with each other), so that the transmission synchronism is kept;

step three: two gears (i.e., a first rack drive gear 151 and a second rack drive gear 152) coaxial with the two main drive gears are engaged with the first arc-shaped rack 31 and the second arc-shaped rack 32 connected to the two hatches 6, respectively, so that the rotation of the motor 1 can be converted into the extending and retracting movements of the two arc-shaped racks along the whole mechanism profile.

Step four: the two arc-shaped racks (including the first arc-shaped rack 31 and the second arc-shaped rack 32) are connected with the two hatches 6 through the adjustable rocker 4, so that the hatches 6 are driven to slide in the arc-shaped guide rail 5, the hatches 6 are repeatedly opened and closed, and the action synchronism can be kept.

Based on the technical scheme, the invention can solve the problems that the existing firer type cabin opening damages the body structure and the cabin door can not be opened and closed repeatedly. In the invention, the supporting plate, the supporting bracket and the supporting beam are main supporting parts, the arc-shaped guide rail and the process beam form the appearance of a main body of the device, two ends of the skin are fixedly connected with the arc-shaped guide rail, the middle part of the skin is fixedly connected with the supporting beam to form the outer surface of the device so as to keep the pneumatic appearance of the device, and the motor, the driving gear and the rack guide rail assembly are fixed on the supporting plate. The rotation output of the motor is transmitted to the driving gear through the coupler, the driving gear is meshed with each other and transmits power to the arc-shaped rack, the arc-shaped rack is connected with the cabin door through the adjustable rocker, the sliding of the cabin door in the arc-shaped guide rail is achieved, and therefore the repeated opening and closing of the cabin door are achieved. The invention is used for repeatedly opening and closing the cabin door.

It should be noted that the materials and shapes used in the present invention are not limited by the above examples, and are within the scope of the present patent; the adjustable rocker used by the invention is not limited by the structure and is within the protection scope of the patent; the characteristics of the device adopted by the invention are not limited by the above examples and are within the scope of protection of the patent; other transmission modes, such as link transmission, etc., are within the scope of the present patent.

Compared with the prior art, the repeated opening and closing mechanism of the cabin door provided by the invention has the following beneficial effects:

1. the invention has simple operation, is realized by adopting a non-fire mode, and is a novel repeated opening and closing device of the cabin door.

2. The device of the invention has scientific structure and small whole volume.

Compared with the prior art, the repeated cabin door opening and closing mechanism provided by the invention has a scientific structural design, can solve the problems that the existing firer type cabin opening mode destroys the cabin door structure and the cabin door cannot be opened and closed repeatedly, can meet the requirement of repeated cabin opening, and has great production practice significance.

The invention realizes the repeated opening and closing of the cabin door by utilizing the gear rack mechanism, and finally realizes the repeated cabin opening dimensional shape of the cabin door in a non-firer mode.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.