Semi-automatic boarding step structure

Abstract

The cam is engaged with the pedal and the control wheel, and the control wheel is engaged with the pedal and the control wheel, and the control wheel is engaged with the pedal and the control wheel.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft boarding structures, in particular to a semi-automatic boarding step structure. Background Art

[0002] Boarding steps are a device used by pilots and ground maintenance personnel to get on and off aircraft. For military aircraft, built-in retractable boarding steps are often used. Retractable boarding steps are generally divided into manual and automatic types: manual boarding steps are manually lowered by the pilot or ground crew, and manually retracted by the ground crew after the pilot boards the aircraft; automatic boarding steps are equipped with an electric or hydraulic retraction mechanism in the aircraft, which is automatically retracted and lowered by a motor or hydraulic drive; the advantage of manual boarding steps is simple structure and high reliability, but the disadvantage is that the pilot must be assisted by ground crew to retract the steps after boarding. For some aircraft, in some cases, the pilot is required to independently complete the process of lowering the steps - boarding - retracting the steps, and manual steps cannot meet the requirements; the advantage of automatic boarding steps is that they are easy to use, and both ground crew and pilots can retract and extend the boarding steps. The disadvantage is that they use energy and have a complex structure. Summary of the Invention

[0003] The technical problem solved by the present invention is to provide a semi-automatic boarding step structure to solve the problems in the above-mentioned background technology.

[0004] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0005] A semi-automatic boarding pedal structure comprises a pull ring (1), a base (2), a pulley (3), a steel cable (4), a frame plate (5), a rocker spring (6), a rocker (8), a pulley (9), a pulley (10), a stop spring (11), a pedal support (12), a stop block (13), a pedal (14), a gas spring (15) and a joint (16), wherein the pull ring (1) is arranged on the base (2) near the cabin, and a sliding plate is installed on one side of the base (2). Wheel (3), a frame plate (5) is installed below the base (2), a rocker spring (6), a rocker (8), a pulley (9), and a pulley (10) are provided on the upper part of the frame plate (5), and one end of the rocker spring (6) is installed on the frame plate (5), and the other end of the rocker spring (6) is nested on the rocker (8), and one end of the rocker (8) is provided with a sliding member for supporting the steel cable (4) to pass through; a stop spring (11) is provided in the middle of the frame plate (5), and a pedal is provided at the lower part of the frame plate (5). Support (12), stop block (13), pedal (14), gas spring (15) and joint (16), pedal support (12) is mounted on the frame plate (5), one end of the stop spring (11) is mounted on the frame plate (5), the other end of the stop spring (11) is connected to the stop block (13), the stop block (13) is mounted on the frame plate (5) above the pedal support (12), the pedal (14) is mounted on the pedal support (12), and the pedal (14) is provided There is a groove for embedding a stop block (13) and a boss for driving the stop block (13) to rotate upward around the rotating shaft of the pedal support (12). The joint (16) is installed on the frame plate (5). One end of the gas spring (15) is hinged to the joint (16), and the other end of the gas spring (15) is hinged to the pedal (14); the steel cable (4) connected to the pulley (1) passes through the pulley (3) and enters the pulley (9), the sliding member, and the pulley (10) and is fixed on the stop block (13).

[0006] In the present invention, the rocker arm (8), the pulley (9), and the pulley (10) are respectively mounted on the frame plate (5) via the support (7).

[0007] In the present invention, one end of the rocker arm (8) is mounted on the support (7), and the other end of the rocker arm (8) is provided with a fixed pulley for supporting a sliding member through which the steel cable (4) passes.

[0008] In the present invention, the other end of the rocker arm (8) is configured as a U-shaped structure for mounting a fixed pulley.

[0009] In the present invention, a mounting seat is mounted on the frame plate (5), and a stop block (13) is mounted on the mounting seat.

[0010] In the present invention, a pin hole is provided on the mounting seat, and the stop block (13) is mounted on the mounting seat via a cotter pin.

[0011] In the present invention, the stop block (13) is a wedge block structure, and the steel cable (4) is fixed in the middle of the wedge block structure.

[0012] In the present invention, in the retracted position, the gas spring (15) is in a retracted state, pulling the pedal (14) into the fuselage;

[0013] When using the boarding pedal, the pilot or ground staff pulls the pedal (14) to overcome the retraction force of the gas spring (15), causing the pedal (14) to rotate around the rotation axis of the pedal support (12). The boss on the pedal (14) drives the stop block (13) to rotate upward around the rotation axis of the pedal support (12). The rotation of the stop block (13) tightens the stop spring (11) on the one hand, and on the other hand, causes the steel cable (4) to move upward. At this time, the pre-tensioning force of the rocker spring (6) drives the rocker arm (8) to swing upward around the support (7), thereby keeping the steel cable (4) in a taut state.

[0014] When the pedal (14) reaches the lowered position, the frame plate (5) restricts the pedal (14) from continuing to swing forward, and the stop block (13) slides over the boss of the pedal (14) and is embedded in the groove, and is pressed against the groove by the pre-tensioning force of the stop spring (11), thereby locking the pedal (14) in the lowered position;

[0015] After the pilot completes boarding by using the pedals (14), the pilot or ground staff pulls the pull ring (1) provided on the base (2) near the cockpit, driving the steel cable (4). The steel cable (4) pulls the stop block (13) through the pulley (3), the pulley (9), the rocker (8), and the pulley (10), overcoming the pulling force of the stop spring (11), so that the stop block (13) is separated from the groove of the pedal (14), completing the unlocking. The pedal is automatically retracted under the retraction force of the gas spring (15), and the pull ring (1) is automatically returned to its original position under the action of the rocker spring (6) and the stop spring (11) tightening the steel cable. Beneficial effects

[0016] 1) The present invention uses built-in boarding steps, so pilots do not need a special boarding ladder to board the aircraft, reducing the workload of ground staff;

[0017] 2) The present invention uses a gas spring to retract the pedals, eliminating the need for an energy-driven structure, resulting in a simple structure and easy maintenance.

[0018] 3) The present invention uses a pull ring to drive a steel cable to automatically retract after the pedal is unlocked. The pull ring is arranged on the outside of the cockpit and can be reached by ground staff outside the aircraft or by the pilot inside the cockpit. This allows ground staff to assist the pilot in boarding, or the pilot to board the aircraft independently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of a preferred embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of a preferred embodiment of the present invention showing the boarding step in a lowered state.

[0021] Figure 3 for Figure 2 Enlarged view of point P in the middle. Implementation Method

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0023] See also Figures 1 to 3 A semi-automatic boarding pedal structure comprises a pull ring (1), a base (2), a pulley (3), a steel cable (4), a frame plate (5), a rocker spring (6), a support (7), a rocker (8), a pulley (9), a pulley (10), a stop spring (11), a pedal support (12), a stop block (13), a pedal (14), a gas spring (15) and a joint (16), wherein the pull ring (1) is arranged on the base (2) near the cabin, a pulley (3) is installed on one side of the base (2), and the bottom A frame plate (5) is installed below the seat (2); a rocker spring (6), a support (7), a rocker arm (8), a pulley (9), and a pulley (10) are provided on the upper part of the frame plate (5), and the rocker arm (8), the pulley (9), and the pulley (10) are respectively installed on the frame plate (5) through the support (7), one end of the rocker spring (6) is installed on the frame plate (5), and the other end of the rocker spring (6) is nested on the rocker arm (8), and one end of the rocker arm (8) is provided with a fixed pulley for supporting the steel cable (4) to pass through; in the frame plate (5), The frame plate (5) is provided with a stop spring (11), the lower part of the frame plate (5) is provided with a pedal support (12), a stop block (13), a pedal (14), a gas spring (15) and a joint (16), the pedal support (12) is mounted on the frame plate (5), one end of the stop spring (11) is mounted on the frame plate (5), the other end of the stop spring (11) is connected to the stop block (13), the stop block (13) is mounted on the frame plate (5) above the pedal support (12), and the pedal ( 14), a groove for embedding a stop block (13) and a boss for driving the stop block (13) to rotate upward around the rotating shaft of the pedal support (12) are provided on the pedal (14), a joint (16) is mounted on the frame plate (5), one end of the gas spring (15) is hinged to the joint (16), and the other end of the gas spring (15) is hinged to the pedal (14); the steel cable (4) connected to the pulley (1) passes through the pulley (3) and enters the pulley (9), the fixed pulley, and the pulley (10) and is fixed on the stop block (13).

[0024] In this embodiment, one end of the rocker arm (8) is mounted on the support (7), and the other end of the rocker arm (8) is provided with a fixed pulley for the steel cable (4) to pass through.

[0025] In this embodiment, the other end of the rocker arm (8) is configured as a U-shaped structure for mounting a fixed pulley.

[0026] In this embodiment, a mounting seat is mounted on the frame plate (5), and the stop block (13) is mounted on the mounting seat.

[0027] In this embodiment, a pin hole is provided on the mounting seat, and the stop block (13) is mounted on the mounting seat via a cotter pin.

[0028] In this embodiment, the stop block (13) is a wedge block structure, and the steel cable (4) is fixed in the middle of the wedge block structure.

[0029] In this embodiment, in the retracted position, the gas spring (15) is in a retracted state, pulling the pedal (14) into the fuselage;

[0030] When using the boarding pedal, the pilot or ground staff pulls the pedal (14) to overcome the retraction force of the gas spring (15), causing the pedal (14) to rotate around the rotation axis of the pedal support (12). The boss on the pedal (14) drives the stop block (13) to rotate upward around the rotation axis of the pedal support (12). The rotation of the stop block (13) tightens the stop spring (11) on the one hand, and on the other hand, causes the steel cable (4) to move upward. At this time, the pre-tensioning force of the rocker spring (6) drives the rocker arm (8) to swing upward around the support (7), thereby keeping the steel cable (4) in a taut state.

[0031] like Figure 2 、 3 As shown, when the pedal (14) reaches the lowered position, the frame plate (5) restricts the pedal (14) from continuing to swing forward, and the stop block (13) slides over the boss of the pedal (14) and is embedded in the groove, and is pressed against the groove by the pre-tensioning force of the stop spring (11), thereby locking the pedal (14) in the lowered position;

[0032] After the pilot completes boarding by using the pedals (14), the pilot or ground staff pulls the pull ring (1) provided on the base (2) near the cockpit, driving the steel cable (4). The steel cable (4) pulls the stop block (13) through the pulley (3), the pulley (9), the rocker (8), and the pulley (10), overcoming the pulling force of the stop spring (11), so that the stop block (13) is separated from the groove of the pedal (14), completing the unlocking. The pedal is automatically retracted under the retraction force of the gas spring (15), and the pull ring (1) is automatically returned to its original position under the action of the rocker spring (6) and the stop spring (11) tightening the steel cable.

[0033] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-automatic boarding step structure, comprising a pull ring (1), a base (2), a pulley (3), a steel cable (4), a frame plate (5), a rocker spring (6), a rocker (8), a pulley (9), a pulley (10), a retaining spring (11), a step support (12), a stop block (13), a step (14), a gas spring (15) and a joint (16), characterized in that: The pull ring (1) is arranged on a base (2) near the cabin, a pulley (3) is installed on one side of the base (2), a frame plate (5) is installed below the base (2), a rocker spring (6), a rocker (8), a pulley (9), and a pulley (10) are arranged on the upper part of the frame plate (5), and one end of the rocker spring (6) is installed on the frame plate (5), and the other end of the rocker spring (6) is nested on the rocker (8), and one end of the rocker (8) is provided with a sliding member for supporting the steel cable (4) to pass through; a stop spring (11) is provided in the middle of the frame plate (5), and a pedal support (12), a stop block (13), a pedal (14), a gas spring (15) and a joint (16) are provided at the lower part of the frame plate (5), the pedal support (12) is installed on the frame plate (5), the stop spring (11) ) one end is mounted on the frame plate (5), the other end of the stop spring (11) is connected to the stop block (13), the stop block (13) is mounted on the frame plate (5) above the pedal support (12), the pedal support (12) is mounted with a pedal (14), the pedal (14) is provided with a groove for embedding the stop block (13) and a boss for driving the stop block (13) to rotate upward around the rotating shaft of the pedal support (12), the joint (16) is mounted on the frame plate (5), one end of the gas spring (15) is hinged to the joint (16), and the other end of the gas spring (15) is hinged to the pedal (14); the steel cable (4) connected to the pulley (1) passes through the pulley (3) and enters the pulley (9), the sliding member, and the pulley (10) and is fixed on the stop block (13).

2. A semi-automatic boarding step structure according to claim 1, characterized in that: The rocker arm (8), the pulley (9), and the pulley (10) are respectively mounted on the frame plate (5) via the supports (7).

3. A semi-automatic boarding step structure according to claim 2, characterized in that: One end of the rocker arm (8) is mounted on the support (7), and the other end of the rocker arm (8) is provided with a fixed pulley for supporting a sliding member through which the steel cable (4) passes.

4. A semi-automatic boarding step structure according to claim 3, characterized in that: The other end of the rocker arm (8) is configured as a U-shaped structure.

5. The semi-automatic boarding step structure according to claim 1, characterized in that: A mounting seat is mounted on the frame plate (5), and a stop block (13) is mounted on the mounting seat.

6. The semi-automatic boarding step structure according to claim 5, characterized in that: The mounting seat is provided with a pin hole.

7. The semi-automatic boarding step structure according to claim 1, characterized in that: The stop block (13) is a wedge block structure, and the steel cable (4) is fixed in the middle of the wedge block structure.

8. A semi-automatic boarding step structure according to any one of claims 1 to 7, characterized in that: In the retracted position, the gas spring (15) is in a retracted state, pulling the pedal (14) into the fuselage; When using the boarding pedal, the pilot or ground staff pulls the pedal (14) to overcome the retraction force of the gas spring (15), causing the pedal (14) to rotate around the rotation axis of the pedal support (12). The boss on the pedal (14) drives the stop block (13) to rotate upward around the rotation axis of the pedal support (12). The rotation of the stop block (13) tightens the stop spring (11) on the one hand, and on the other hand, causes the steel cable (4) to move upward. At this time, the pre-tensioning force of the rocker spring (6) drives the rocker arm (8) to swing upward around the support (7), thereby keeping the steel cable (4) in a taut state. When the pedal (14) reaches the lowered position, the frame plate (5) restricts the pedal (14) from continuing to swing forward, and the stop block (13) slides over the boss of the pedal (14) and is embedded in the groove, and is pressed against the groove by the pre-tensioning force of the stop spring (11), thereby locking the pedal (14) in the lowered position; After the pilot completes boarding by using the pedals (14), the pilot or ground staff pulls the pull ring (1) provided on the base (2) near the cockpit, driving the steel cable (4). The steel cable (4) pulls the stop block (13) through the pulley (3), the pulley (9), the rocker (8), and the pulley (10), overcoming the pulling force of the stop spring (11), so that the stop block (13) is separated from the groove of the pedal (14), completing the unlocking. The pedal is automatically retracted under the retraction force of the gas spring (15), and the pull ring (1) is automatically returned to its original position under the action of the rocker spring (6) and the stop spring (11) tightening the steel cable.

Images