CN212172575U

CN212172575U - Floor turnover mechanism for airplane passenger cabin

Info

Publication number: CN212172575U
Application number: CN201922005428.6U
Authority: CN
Inventors: 汪静; 丁先良; 黎明; 徐卫东; 江鹏
Original assignee: Jiangxi Hongdu Commercial Aircraft Co ltd
Current assignee: Jiangxi Hongdu Commercial Aircraft Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-12-18
Anticipated expiration: 2029-11-20

Abstract

The utility model relates to an aircraft cabin floor tilting mechanism belongs to aircraft frock manufacturing technical field. The device comprises a left bracket, a shape-keeping frame and a right bracket, wherein movable supports are arranged on a support frame of the left bracket and the right bracket and are connected with a lead screw transmission device; in the left stent: a reduction gearbox is arranged on one side of the support frame and is respectively connected with the rocker arm and the universal coupling; the shape-preserving frame is provided with turnover shafts at the left and right centers of the grid frame, and four hanging rings are arranged around the grid frame. The utility model discloses overcome the driving handling and add artifical guide mode and carry out big, the difficult scheduling problem of operation of impact load in the upset process to aircraft cabin floor.

Description

Floor turnover mechanism for airplane passenger cabin

Technical Field

The utility model relates to an aircraft cabin floor tilting mechanism belongs to aircraft frock manufacturing technical field.

Background

In order to meet the requirements of the shape precision of large-sized wall plate type parts of an airplane, the assembly process is completed on the same shape-preserving frame as much as possible, but the assembly process is limited by conditions such as space and the like, and in order to meet the requirements of manufacturing precision and the like, the parts are often required to be turned over on a shape-preserving machine. The conventional overturning generally adopts a mode of crane lifting and manual guiding, a crane steel cable is used for lifting a hook on one side of the shape-preserving frame during operation, and the shape-preserving frame is overturned to a proper position through manual guiding.

When the passenger cabin floor protection frame is turned over, the gravity center is unstable, the gravity center may not be on the surface where a product is toppled over, the gravity center position needs to be adjusted in a manual pulling mode on site, the protection frame and the passenger cabin floor are heavy in weight, the gravity center position can be adjusted only by manually pulling repeatedly, severe shaking of the protection frame and the passenger cabin floor can be caused in the adjustment process, and potential safety hazards are brought to personnel and the product.

Disclosure of Invention

The utility model discloses an overcome the driving handling and add artifical guide mode and carry out big, the difficult scheduling problem of operation of impact load in the upset process to aircraft cabin floor, the utility model aims to provide an aircraft cabin floor tilting mechanism.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:

a floor turnover mechanism for an airplane passenger cabin comprises a left support, a shape-preserving frame and a right support, wherein movable supports are arranged on a support frame of the left support and the right support and are connected with a lead screw transmission device;

in the left stent: a reduction gearbox is arranged on one side of the support frame and is respectively connected with the rocker arm and the universal coupling;

the shape-preserving frame is provided with turnover shafts at the left and right centers of the grid frame, and four hanging rings are arranged around the grid frame.

Furthermore, the movable support is formed by welding a floor, a supporting plate and two reinforcing plates.

Furthermore, the universal coupling is formed by mechanically connecting an input shaft, an intermediate shaft, a cross shaft, an output shaft, a shaft and a shaft retainer ring, wherein the input shaft is connected with the output shaft of the reduction gearbox, and the output shaft is connected with the turnover shaft of the shape-keeping frame.

Furthermore, the rocker arm consists of a handle, a rocker arm positioning plate, a rocker handle and a bolt with a handle;

the rocker arm positioning plate is provided with an angle, positioning holes are arranged on the rocker arm positioning plate at fixed angles, the handle is provided with a parking bolt hole, and the positioning holes and the parking bolt hole are concentric in the rotation process of the rocker handle.

Furthermore, the lead screw transmission device consists of a lead screw handle, a baffle, a support, a lead screw and a lead screw nut;

the support is connected with the support frame, the screw rod nut is connected with the bottom plate of the movable support through a bolt, and the operating screw rod handle is connected with one end of the screw rod.

When the airplane cabin floor overturning device works, a protection frame (a cabin floor is fixed on the protection frame) is vertically lifted out, a lead screw transmission device rocking handle on a left support and a right support is operated, a movable support is pushed out, an overturning shaft of the protection frame is slowly placed on the movable support, a steel cable is loosened, the overturning shaft is connected with a universal coupling on a left support, a reducer rocker arm on the left support is operated to overturn the protection frame, a parking device is arranged on the rocker arm to realize parking in the overturning process at any time, after the protection frame is overturned to a horizontal position, the steel cable is connected with 2 lifting rings on the other side, the overturning shaft is disconnected with the universal coupling, the protection frame is horizontally lifted, the lead screw transmission device is operated to reset the movable supports on the supports at the two ends, then the protection frame is slowly placed on an original horizontal station frame, and the airplane cabin floor.

The utility model has the advantages as follows:

(1) because roll-over stand dead weight itself is great, the utility model discloses arrange the position of upset axle in the center of the model frame department, make the type frame focus of keeping coincide with theoretical center mutually, make the impact load greatly reduced of upset process, improved the security of upset process, shortened upset operating time simultaneously, reduced operating personnel quantity, greatly improved work efficiency.

(2) In the overturning process, the overturning shaft of the shape-preserving frame falls on the movable support, is connected with the universal coupling and is driven to overturn by the universal coupling. Because manufacturing and assembly errors cannot ensure that the turnover shaft of the shape-preserving frame and the output shaft of the speed reducer are completely coaxial, a universal coupling is arranged between the output shaft of the speed reducer and the turnover shaft to compensate the assembly and manufacturing errors.

(3) The turnover process is realized by operating the rocker arm on the reduction gearbox, and the parking device is designed on the rocker arm, namely the rocker arm is provided with a positioning plate and a handle bolt, a hole site is arranged on the rocker arm positioning plate every 15 degrees, when the parking is needed, the bolt is inserted into the hole site from the rocker arm handle, so that the protective frame is prevented from continuously deflecting downwards under the action of the gravity center, a protective effect is exerted on the whole turnover mechanism and personnel, and the turnover process is safe and controllable.

Drawings

FIG. 1 is a schematic illustration of an embodiment of a cabin floor turnover mechanism. Wherein 1, the left support, 2, the shape-preserving frame, 3, the right support.

Fig. 2 is a schematic structural view of the left bracket 1. The device comprises a support frame 4, a movable support 5, a universal coupling 6, a reduction gearbox 7, a rocker arm 8 and a lead screw transmission device 9.

Fig. 3 is a structural schematic diagram of the right bracket 3. The device comprises a support frame 4, a movable support 5 and a lead screw transmission device 9.

Fig. 4 is a schematic structural view of the shape-retaining frame 2. Wherein, 10 the turning shaft, 11 the hanging ring and 12 the grid frame.

Fig. 5 is a schematic structural view of the cradle 5.

Fig. 6 is a schematic structural view of the universal joint 6. 13, an input shaft, 14, an intermediate shaft, 15, a cross shaft, 16, an output shaft, 17, 18 and a retaining ring for the shaft.

Fig. 7 is a schematic view of the structure of the rocker arm 8. Wherein 19, the handle, 20, the rocker arm positioning plate, 21, the rocker handle and 22 are provided with handle bolts.

Fig. 8 is a schematic structural view of the screw transmission device 9. The screw rod comprises 23 screw rod handles, 24 baffles, 25 supports, 26 screw rods and 27 screw rod nuts.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention;

please refer to simultaneously and refer to fig. 1, fig. 2, fig. 3, fig. 4, the utility model discloses aircraft cabin floor tilting mechanism includes left socle 1, guarantor's type frame 2 and right branch frame 3, and wherein movable support 5 is installed to left socle 1 in support frame 4 one side, and movable support 5 is connected with screw drive 9, operates this screw drive 9 and can realize the back-and-forth movement of movable support 5 on support frame 4, and reduction box 7 is installed to support frame 4 opposite side, and reduction box 7 is connected with rocking arm 8 and universal joint 6 respectively. The right bracket 3 is provided with a movable support 5 on a support frame 4, the movable support 5 is connected with a lead screw transmission device 9, and the movable support 5 can move back and forth by operating the lead screw transmission device 9. The shape-keeping frame 2 is provided with a turning shaft 10 at the left and right centers of a grid frame 12, and four hanging rings 11 are arranged around the grid frame 12, wherein the structural form of the grid frame 12 can be designed according to the actual component structure.

The utility model discloses a theory of operation does: when the cabin floor protective frame is turned over, the steel cable is used for connecting two lifting rings 11 on the side surface above the protective frame 2 (the protective frame 2 is vertically placed on a standing frame before turning over), the protective frame 2 is vertically lifted out of the standing frame, a turning shaft 10 is slightly higher than movable supports 5 of a left support 1 and a right support 3, a lead screw transmission device 9 is shaken to push out the movable supports 5 on the two supports, then the turning shaft 10 of the protective frame 2 is slowly placed on the movable supports 5, the steel cable is slightly loosened at the moment, a universal coupling 6 is connected with the turning shaft 10, a rocker arm 8 is operated to turn over the protective frame 2, a parking device on the rocker arm 8 can be used for parking at any time in the turning over process, when the protective frame 2 is turned over to a horizontal state, the two lifting rings 11 on the other side of the protective frame 2 are connected with the steel cable, the length of the steel cable is adjusted, then the turned protective frame 2 is horizontally lifted, the lead screw transmission device 9 is shaken, and slowly placing the shape-preserving frame on the original station frame, and finishing the overturning work.

The support frames 4 and the grid frames 12 on the left support 1, the shape-keeping frame 2 and the right support 3 are welded by Q235, and the specific size of the grid frames can be adjusted according to the actual situation; the reduction box is a fixed reduction ratio component and can be selected according to actual requirements.

The structure of the movable support 5 is shown in fig. 5, and is formed by welding a floor, a supporting plate and two reinforcing plates.

The structure of the universal coupling 6 is shown in figure 6, and the universal coupling is formed by mechanically connecting an input shaft 13, an intermediate shaft 14, a cross shaft 15, an output shaft 16, a shaft 17 and a shaft retainer ring 18, wherein the input shaft 13 is connected with the output shaft of the reduction gearbox 7, the output shaft 16 is connected with the turning shaft 10 of the shape-preserving frame 2, and the universal coupling 6 can compensate the problem that the output shaft of the reduction gearbox 7 and the turning shaft 10 are not coaxial due to manufacturing and assembling errors.

The structure of the rocker arm 8 is shown in fig. 6 and comprises a handle 19, a rocker arm positioning plate 20, a rocker handle 21 and a bolt 22 with a handle. The rocker arm positioning plate 20 is provided with an angle, an operator can judge the turning position of the protective frame 2 according to the rotating angle of the rocker arm, positioning holes are formed in the rocker arm positioning plate 20 every 15 degrees, a parking bolt hole is formed in the handle 19, the two holes can be concentric in the rotating process of the handle 19, and if the parking is needed in the turning process, the bolt 22 with the handle is only required to be inserted into the two holes.

The structure of the lead screw transmission device 9 is shown in fig. 8, and the lead screw transmission device is composed of a lead screw handle 23, a baffle 24, a support 25, a lead screw 26 and a lead screw nut 27. The support 25 is connected with the support frame 4, the screw nut 27 is connected with the bottom plate of the movable support 5 through a bolt, and the movable support can move by operating the screw handle 23.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. The utility model provides an aircraft cabin floor tilting mechanism which characterized in that: the device comprises a left support (1), a shape-preserving frame (2) and a right support (3), wherein movable supports (5) are arranged on a support frame (4) of the left support (1) and the right support (3), and the movable supports (5) are connected with a lead screw transmission device (9);

in the left stent (1): a reduction gearbox (7) is installed on one side of the support frame (4), and the reduction gearbox (7) is respectively connected with the rocker arm (8) and the universal coupling (6);

the shape-keeping frame (2) is provided with a turning shaft (10) at the left and right centers of the grid frame (12), and four hanging rings (11) are arranged around the grid frame (12).

2. The aircraft cabin floor turnover mechanism of claim 1, wherein: the movable support (5) is formed by welding a floor, a supporting plate and two reinforcing plates.

3. The aircraft cabin floor turnover mechanism of claim 1, wherein: the universal coupling (6) is formed by mechanically connecting an input shaft (13), an intermediate shaft (14), a cross shaft (15), an output shaft (16), a shaft (17) and a shaft retainer ring (18), the input shaft (13) is connected with the output shaft of the reduction gearbox (7), and the output shaft (16) is connected with a turnover shaft (10) of the shape-preserving frame (2).

4. The aircraft cabin floor turnover mechanism of claim 1, wherein: the rocker arm (8) consists of a handle (19), a rocker arm positioning plate (20), a rocker handle (21) and a bolt (22) with a handle;

the rocker arm positioning plate (20) is provided with angles, positioning holes are arranged on the rocker arm positioning plate (20) at fixed angles, the handle (19) is provided with parking bolt holes, and the positioning holes and the parking bolt holes are concentric in the rotating process of the handle (19).

5. The aircraft cabin floor turnover mechanism of claim 1, wherein:

the lead screw transmission device (9) consists of a lead screw handle (23), a baffle (24), a support (25), a lead screw (26) and a lead screw nut (27);

the support (25) is connected with the support frame (4), the screw rod nut (27) is connected with the bottom plate of the movable support (5) through a bolt, and the operating screw rod handle (23) is connected with one end of the screw rod (26).