Hand-cranking supporting device for aircraft seat

Abstract

The invention discloses an aircraft seat hand-cranking supporting device, and belongs to the technical field of aircraft seat hand-cranking supporting devices. The rotating plate mechanism is connected with the seat rotating plate base through a first C-level hexagon bolt, a first flat washer, a second C-level hexagon nut and a first elastic washer, and the rotating plate mechanism can rotate around the seat rotating plate base to form a single-side wing spreading type structure. The lead screw mechanism is used for pushing the rotating plate mechanism to rotate around the seat rotating plate base. The device is simple and practical in structure, has very high safety and rapidness compared with the prior art that corresponding universal tools are selected only by manpower, and meanwhile, can provide better angle selection repair efficiency during maintenance after the seat in the aircraft control system is disassembled; and the inaccurate navigation attitude angle parameters of the seat and the scrapping probability of the whole seat caused by decomposition, maintenance and damage are reduced.

Description

Technical Field

[0001] The invention relates to a hand-cranked support device for an aircraft seat, and in particular to a support device for a lower stripe of an aircraft rocket ejection seat, and belongs to the technical field of hand-cranked support devices for aviation seats. Background Art

[0002] During the overhaul of a certain type of aircraft, the rocket ejection seat weighs about 200Kg. When simulating the flight attitude, it needs stable support and must form an angle between 90 degrees and 155 degrees with the ground. The seat's control system must be specially repaired, requiring the rocket ejection seat to have a self-locking function at any angle after assembly, that is, after two people cooperate in assembly, one person can independently complete the maintenance. The repair personnel need an operation certificate, and the redundant personnel can repair the remaining aircraft or double cabins at the same time. It is safe and reliable to avoid incorrect angles of the rocket ejection seat and invalid parameters when simulating the flight attitude.

[0003] The original aircraft seat of a certain type did not have a dedicated hand-cranked support device. The aircraft seat hand-cranked support device is used to fill the gap in the disassembly and installation of the seats of a certain type of aircraft using special tools. The structure of the invention is simple and practical. Compared with the connection and installation method of the prior art that only manually selects the corresponding universal tools, it has high practicality. At the same time, it can also provide better angle support efficiency of the aircraft seat and reduce the parameter failure caused by the selection of universal tools due to the seat attitude repair angle, which may cause the scrapping probability of the entire aircraft seat after repair. Summary of the invention

[0004] The present invention aims to solve the problems existing in the prior art and provides a hand-crank support device for aircraft seats. The original seat disassembly support of a certain type of aircraft has no special device, and can only be placed on a table or the ground for repair after disassembly, which is very likely to cause inaccurate parameters after repair due to inaccurate angles. The hand-crank support device for aircraft seats is used to fill the gap in the repair angle of the slide support under the seat of a certain type of aircraft.

[0005] The technical solution of the present invention:

[0006] A hand-crank support device for an aircraft seat, comprising a rotating plate mechanism 1, a screw mechanism 2, a seat rotating plate base 3, a cross recessed countersunk screw B1, a first C-level hexagonal head bolt B2, a first flat washer B3, a second C-level hexagonal head nut B4, a first elastic washer B5, a third C-level hexagonal head bolt B6, a second flat washer B7, and a second elastic washer B8.

[0007] The rotating plate mechanism 1 is connected to the seat rotating plate base 3 through a first C-level hexagonal bolt B2, a first flat washer B3, a second C-level hexagonal nut B4, and a first elastic washer B5. The rotating plate mechanism 1 can rotate around the seat rotating plate base 3 to form a single-sided "spread-wing" structure. The screw mechanism 2 is used to push the rotating plate mechanism 1 to rotate around the seat rotating plate base 3.

[0008] Further, the transfer plate mechanism 1 includes a transfer plate support plate A1-1, a transfer plate baffle plate 1-2, a transfer plate movable support rod 1-3, a transfer plate bolt sleeve 1-4, and a transfer plate support plate B1-5. The transfer plate support plate A1-1 and the transfer plate support plate B1-5 are arranged in parallel. On the one hand, the two are connected and fixed by the transfer plate movable support rod 1-3. On the other hand, a transfer plate bolt sleeve 1-4 is arranged between the two. The first C-level hexagonal head bolt B2 passes through the transfer plate bolt sleeve 1-4 to achieve a rotational connection with the seat transfer plate base 3; the transfer plate baffle plate 1-2 is respectively arranged on the inner side of the transfer plate support plate A1-1 and the transfer plate support plate B1-5, and a cylindrical groove is arranged on the inner end surface;

[0009] Furthermore, the connection between the rotating plate baffle 1-2 and the rotating plate support plate A1-1 and the rotating plate support plate B1-5 is connected by cross recessed countersunk screws B1.

[0010] Furthermore, the seat turntable base 3 includes a base side plate 3-1, a base bottom plate 3-2, a base turntable 3-3, a base upper plate 3-4, a base clamping plate A3-5, a base clamping plate B3-6, a base panel 3-7, and a turntable 3-8; the two base side plates 3-1 are arranged in parallel, and the top and bottom of the two are respectively connected and fixed by the base upper plate 3-4 and the base bottom plate 3-2, and the side is connected and fixed to the base panel 3-7; the base bottom plate 3-2 is connected by the base turntable 3-3 is connected to the turntable 3-8; there are two sets of base clamping plates A3-5 and base clamping plates B3-6 respectively, wherein the bottom surface of the base clamping plate B3-6 is fixed to the base side plate 3-1, and a through hole is formed after the base clamping plates A3-5 and the base clamping plates B3-6 are opposite to each other, and the axial direction of the through hole is perpendicular to the plate surface of the base side plate 3-1, and the base clamping plates A3-5 and the base clamping plates B3-6 are fixed by the third C-level hexagonal head bolt B6, the second flat washer B7, and the second elastic washer B8;

[0011] Furthermore, the screw mechanism 2 includes a screw block A2-1, a screw 2-2, a screw baffle 2-3, a screw block B2-4, a screw crank 2-6, a screw handle 2-7, a second C-level hexagonal head bolt 2-9, and a one-way thrust ball bearing 2-10; the screw handle 2-7 is fixed to one end of the screw crank 2-6, and the other end of the screw crank 2-6 is fixed to one end of a stepped cylinder, and the one-way thrust ball bearing 2-10 and the screw block B2-4 are sleeved on the stepped cylinder, and the two end faces of the one-way thrust ball bearing 2-10 are respectively passed through the shoulder end face of the stepped cylinder and one side end of the screw block B2-4. The other end face of the screw block B2-4 is limited by the other shoulder end face of the stepped cylinder, and the other end of the stepped cylinder is fixed to one end of the screw 2-2; the other end of the screw 2-2 is connected to the internal thread of the screw block A2-1 through an external thread, and the small cylinders at both ends of the screw block B2-4 are respectively inserted into the through holes formed by the two sets of base clamps A3-5 and the base clamps B3-6 to achieve the positioning of the screw block B2-4 and the seat turntable base 3, and the small cylinders at both ends of the screw block A2-1 are respectively inserted into the cylindrical grooves of the turntable baffle 1-2 to achieve the positioning of the screw block A2-1 and the turntable mechanism 1. The screw handle 2-7 rotates and drives the screw 2-2 to rotate, which in turn causes the screw 2-2 and the screw block A2-1 to rotate relative to each other, causing the displacement of the screw block A2-1 to change, and then drives the turntable mechanism 1 to rotate around the connection point between the turntable mechanism 1 and the seat turntable base 3, so as to achieve the deployment of the turntable mechanism 1. The screw stopper 2-3 is arranged on the outside of the screw block A2-1, connected to the screw 2-2 through the second C-level hexagonal head bolt 2-9, and is used to limit the screw block A2-1.

[0012] Furthermore, when the end faces of the small cylinders of the lead screw block A2-1 and the lead screw block B2-4 are connected, a step pad 2-8 may be provided.

[0013] Beneficial effects of the present invention: The present invention provides a hand-cranked support device for aircraft seats, which can support the lower end surface of a certain aircraft seat at an angle of 90 degrees to 155 degrees, and the hand-cranked screw mechanism can be self-locked at any angle within the range. It has been in field operation for 3 years without any problems, so that the seat of a certain aircraft can be arbitrarily shaped within the range of 90 degrees to 155 degrees during simulation flight. The structure of the present invention is simple and practical, and it has high safety and speed compared to the prior art that only relies on manual selection of corresponding general tools. At the same time, it can also provide better angle selection and repair efficiency when the seat is disassembled and repaired in the aircraft control system, and reduce the probability of inaccurate seat attitude angle parameters and the overall scrapping of the seat due to disassembly and repair damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1( a ) is a front view of the overall structure of the present invention.

[0015] FIG. 1( b ) is a top view of the overall structure of the present invention.

[0016] Figure 2 This is the structural diagram of the transfer plate mechanism.

[0017] Figure 3(a) is a front view of the screw mechanism structure.

[0018] Figure 3(b) is a top view of the screw mechanism structure.

[0019] Figure 4 This is a structural diagram of the seat swivel base.

[0020] Among them, 1. Turntable mechanism, 2. Screw mechanism, 3. Seat turntable base, B1. Cross recessed countersunk screw, B2. First C-level hexagonal head bolt, B3. First flat washer, B4. Second C-level hexagonal head nut, B5. First elastic washer, B6. Third C-level hexagonal head bolt, B7. Second flat washer, B8. Second elastic washer, 1-1. Turntable support plate A, 1-2. Turntable baffle, 1-3. Turntable movable support rod, 1-4. Turntable bolt sleeve, 1-5 Turntable support plate B, 3-1, base side panel, 3-2, base bottom plate, 3-3, base turntable, 3-4, base upper plate, 3-5, base splint A, 3-6, base splint B, 3-7, base panel, turntable 3-8, 2-1 screw block A, 2-2 screw, 2-3 screw stopper, 2-4 screw block B, 2-5 screw locating pin, 2-6 screw crank, 2-7 screw handle, 2-8 step gasket, 2-9 second C grade hexagon head bolt, 2-10 one-way thrust ball bearing. DETAILED DESCRIPTION

[0021] A hand-crank support device for an aircraft seat, comprising a rotating plate mechanism 1, a screw mechanism 2, a seat rotating plate base 3, a cross recessed countersunk screw B1, a first C-level hexagonal head bolt B2, a first flat washer B3, a second C-level hexagonal head nut B4, a first elastic washer B5, a third C-level hexagonal head bolt B6, a second flat washer B7, and a second elastic washer B8. The first elastic washer B5 is a saddle-type spring washer.

[0022] The rotating plate mechanism 1 is connected to the seat rotating plate base 3 through a first C-level hexagonal bolt B2, a first flat washer B3, a second C-level hexagonal nut B4, and a first elastic washer B5. The rotating plate mechanism 1 can rotate around the seat rotating plate base 3 to form a single-sided "spread-wing" structure. The screw mechanism 2 is used to push the rotating plate mechanism 1 to rotate around the seat rotating plate base 3.

[0023] Further, the transfer plate mechanism 1 includes a transfer plate support plate A1-1, a transfer plate baffle plate 1-2, a transfer plate movable support rod 1-3, a transfer plate bolt sleeve 1-4, and a transfer plate support plate B1-5. The transfer plate support plate A1-1 and the transfer plate support plate B1-5 are arranged in parallel. On the one hand, the two are connected and fixed by the transfer plate movable support rod 1-3. On the other hand, a transfer plate bolt sleeve 1-4 is arranged between the two. The first C-level hexagonal head bolt B2 passes through the transfer plate bolt sleeve 1-4 to achieve a rotational connection with the seat transfer plate base 3; the transfer plate baffle plate 1-2 is respectively arranged on the inner side of the transfer plate support plate A1-1 and the transfer plate support plate B1-5, and a cylindrical groove is arranged on the inner end surface;

[0024] Furthermore, the connection between the rotating plate baffle 1-2 and the rotating plate support plate A1-1 and the rotating plate support plate B1-5 is connected by cross recessed countersunk screws B1.

[0025] Furthermore, the seat turntable base 3 includes a base side plate 3-1, a base bottom plate 3-2, a base turntable 3-3, a base upper plate 3-4, a base clamping plate A3-5, a base clamping plate B3-6, a base panel 3-7, and a turntable 3-8; the two base side plates 3-1 are arranged in parallel, and the top and bottom of the two are respectively connected and fixed by the base upper plate 3-4 and the base bottom plate 3-2, and the side is connected and fixed to the base panel 3-7; the base bottom plate 3-2 is connected by the base turntable 3-3 is connected to the turntable 3-8; there are two sets of base clamping plates A3-5 and base clamping plates B3-6 respectively, wherein the bottom surface of the base clamping plate B3-6 is fixed to the base side plate 3-1, and a through hole is formed after the base clamping plates A3-5 and the base clamping plates B3-6 are opposite to each other, and the axial direction of the through hole is perpendicular to the plate surface of the base side plate 3-1, and the base clamping plates A3-5 and the base clamping plates B3-6 are fixed by the third C-level hexagonal head bolt B6, the second flat washer B7, and the second elastic washer B8;

[0026] Furthermore, the screw mechanism 2 includes a screw block A2-1, a screw 2-2, a screw baffle 2-3, a screw block B2-4, a screw crank 2-6, a screw handle 2-7, a step gasket 2-8, a second C-level hexagonal head bolt 2-9, and a one-way thrust ball bearing 2-10; the screw handle 2-7 is fixed to one end of the screw crank 2-6, and the other end of the screw crank 2-6 is fixed to one end of a stepped cylinder, and the one-way thrust ball bearing 2-10 and the screw block B2-4 are sleeved on the stepped cylinder, and the two end faces of the one-way thrust ball bearing 2-10 pass through the shoulder end face of the stepped cylinder and the screw block B2-4 respectively. The end face of one side of the screw block B2-4 is positioned, and the end face of the other side of the screw block B2-4 is limited by the other shoulder end face of the stepped cylinder. The other end of the stepped cylinder is fixed to one end of the screw 2-2; the other end of the screw 2-2 is connected to the internal thread of the screw block A2-1 through an external thread, and the small cylinders at both ends of the screw block B2-4 are respectively inserted into the through holes formed by the two sets of base clamps A3-5 and the base clamps B3-6 to achieve the positioning of the screw block B2-4 and the seat turntable base 3, and the small cylinders at both ends of the screw block A2-1 are respectively inserted into the cylindrical grooves of the turntable baffle 1-2 to achieve the positioning of the screw block A2-1 and the turntable mechanism 1. The screw handle 2-7 rotates and drives the screw 2-2 to rotate, which in turn causes the screw 2-2 and the screw block A2-1 to rotate relative to each other, causing the displacement of the screw block A2-1 to change, and then drives the turntable mechanism 1 to rotate around the connection point between the turntable mechanism 1 and the seat turntable base 3, so as to achieve the deployment of the turntable mechanism 1. The screw stopper 2-3 is arranged on the outside of the screw block A2-1, connected to the screw 2-2 through the second C-level hexagonal head bolt 2-9, and is used to limit the screw block A2-1.

[0027] Furthermore, when the end faces of the small cylinders of the lead screw block A2-1 and the lead screw block B2-4 are connected, a step pad 2-8 may be provided.

[0028] The rotating plate mechanism 1 is assembled with the seat rotating plate base 3 as a whole, and is fixed to the circular hole at the left end of the seat rotating plate base 3 by the screw mechanism 2 as a supporting point. The screw mechanism 2 is shaken to drive the rotating plate mechanism 1, so that the end face of the movable rotating plate mechanism 1 can move between 90 degrees and 155 degrees. The rotating plate mechanism 1 can be fixed and self-locked at any time.

[0029] The left end of the seat turntable base 3 is formed with a base clamping plate to form a φ20 circular hole, which limits the cylinders on both sides of the screw block 2 in the screw mechanism 2 without fixing them.

[0030] The described hand-cranked support device for a certain type of aircraft seat is characterized in that the lower end surface of the seat of a certain aircraft is supported at an angle of 90 degrees to 155 degrees through a hand-cranked screw mechanism 2, and the hand-cranked screw mechanism 2 can be self-locked at any angle and has been in field operation for 3 years without any problem, so that the seat of a certain aircraft can be arbitrarily shaped within the range of 90 degrees to 155 degrees when simulating a flight.

[0031] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hand-cranked support device for an aircraft seat, characterized in that: The aircraft seat hand-cranked support device comprises a rotating plate mechanism (1), a screw mechanism (2), a seat rotating plate base (3), a cross recessed countersunk screw (B1), a first C-level hexagonal head bolt (B2), a first flat washer (B3), a second C-level hexagonal head nut (B4), a first elastic washer (B5), a third C-level hexagonal head bolt (B6), a second flat washer (B7), and a second elastic washer (B8); The rotating plate mechanism (1) is connected to the seat rotating plate base (3) via a first C-level hexagonal bolt (B2), a first flat washer (B3), a second C-level hexagonal nut (B4), and a first elastic washer (B5); the rotating plate mechanism (1) can rotate around the seat rotating plate base (3) to form a single-sided "spread-wing" structure; the screw mechanism (2) is used to push the rotating plate mechanism (1) to rotate around the seat rotating plate base (3).

2. The hand-cranked support device for an aircraft seat according to claim 1, characterized in that: The rotating plate mechanism (1) comprises a rotating plate support plate A (1-1), a rotating plate baffle plate (1-2), a rotating plate movable support rod (1-3), a rotating plate bolt sleeve (1-4), and a rotating plate support plate B (1-5). The rotating plate support plate A (1-1) and the rotating plate support plate B (1-5) are arranged in parallel. On the one hand, the two are connected and fixed by the rotating plate movable support rod (1-3). On the other hand, a rotating plate bolt sleeve (1-4) is arranged between the two. The first C-level hexagonal head bolt (B2) passes through the rotating plate bolt sleeve (1-4) to achieve a rotational connection with the seat rotating plate base (3); the rotating plate baffle plate (1-2) is respectively arranged on the inner side of the rotating plate support plate A (1-1) and the rotating plate support plate B (1-5), and a cylindrical groove is arranged on the inner end surface.

3. The hand-cranked support device for an aircraft seat according to claim 2, characterized in that: The rotating plate baffle (1-2) is connected to the rotating plate support plate A (1-1) and the rotating plate support plate B (1-5) through cross-slot countersunk screws (B1).

4. The hand-cranked support device for an aircraft seat according to claim 2, characterized in that: The seat turntable base (3) comprises a base side plate (3-1), a base bottom plate (3-2), a base turntable (3-3), a base upper plate (3-4), a base clamping plate A (3-5), a base clamping plate B (3-6), a base panel (3-7), and a turntable (3-8); the two base side plates (3-1) are arranged in parallel, and the top and bottom of the two are respectively connected and fixed by the base upper plate (3-4) and the base bottom plate (3-2), and the side is connected and fixed to the base panel (3-7); the base bottom plate (3-2) is connected to the base turntable (3-3) by the base clamping plate (3-4). -3) is connected to the turntable (3-8); the base clamping plate A (3-5) and the base clamping plate B (3-6) are respectively provided with two sets, wherein the bottom surface of the base clamping plate B (3-6) is fixed to the base side plate (3-1), and the base clamping plate A (3-5) and the base clamping plate B (3-6) are opposite to each other to form a through hole, and the axial direction of the through hole is perpendicular to the plate surface of the base side plate (3-1), and the base clamping plate A (3-5) and the base clamping plate B (3-6) are fixed by a third C-level hexagonal head bolt (B6), a second flat washer (B7), and a second elastic washer (B8).

5. The hand-cranked support device for an aircraft seat according to claim 3, characterized in that: The screw mechanism (2) comprises a screw block A (2-1), a screw (2-2), a screw stopper (2-3), a screw block B (2-4), a screw crank (2-6), a screw handle (2-7), a second C-class hexagonal head bolt (2-9), and a one-way thrust ball bearing (2-10); the screw handle (2-7) is fixed to one end of the screw crank (2-6), the other end of the screw crank (2-6) is fixed to one end of a stepped cylinder, and a one-way thrust ball shaft is sleeved on the stepped cylinder. The two end faces of the one-way thrust ball bearing (2-10) are positioned by the shoulder end face of the stepped cylinder and one end face of the screw block B (2-4), respectively. The other end face of the screw block B (2-4) is limited by the other shoulder end face of the stepped cylinder. The other end of the stepped cylinder is fixed to one end of the screw (2-2). The other end of the screw (2-2) is connected to the internal thread of the screw block A (2-1) through an external thread. The screw block The small cylinders at both ends of B (2-4) are respectively inserted into the through holes formed by the two sets of base clamps A (3-5) and the base clamps B (3-6) to realize the positioning of the screw block B (2-4) and the seat turntable base (3); the small cylinders at both ends of the screw block A (2-1) are respectively inserted into the cylindrical grooves of the turntable baffle (1-2) to realize the positioning of the screw block A (2-1) and the turntable mechanism (1); the screw handle (2-7) is rotated to drive the screw (2-2) to rotate, thereby The screw (2-2) and the screw block A (2-1) are caused to rotate relative to each other, causing the screw block A (2-1) to change its displacement, thereby pushing the turntable mechanism (1) to rotate around the connection point between the turntable mechanism (1) and the seat turntable base (3), thereby realizing the deployment of the turntable mechanism (1); the screw stopper (2-3) is arranged on the outside of the screw block A (2-1), connected to the screw (2-2) by a second C-grade hexagonal head bolt (2-9), and is used to limit the position of the screw block A (2-1).

6. The hand-cranked support device for an aircraft seat according to claim 5, characterized in that: When the end faces of the small cylinders of the lead screw block A (2-1) and the lead screw block B (2-4) are connected, a step pad (2-8) can be sleeved thereon.

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