A boarding ladder

Abstract

The present application relates to the field of aviation machinery, in particular to a kind of for boarding ladder;The present application provides a kind of boarding ladder, be arranged on helicopter, it includes: installation component, can be fastened and installed below the boarding port of helicopter;Height reduction assembly, one end is connected with installation component;And at least one tread component, is connected with the other end of height reduction assembly, when boarding, height reduction assembly opens, and tread component is placed below the helicopter, and makes the tread surface of tread component be in horizontal position, for the pilot boarding;Because the setting of height reduction assembly, makes the tread component be placed below the helicopter when boarding, can solve the problem that pilot boarding is difficult due to the height of helicopter is too high, and the boarding ladder is arranged on helicopter, need not to carry other tools, so that boarding is very convenient.

Description

Technical Field

[0001] This invention relates to the field of aviation machinery, and more specifically to a boarding ladder. Background Technology

[0002] Boarding ladders are widely used on helicopters, facilitating easy boarding and disembarking. They come in various forms, primarily divided into aircraft-integrated ladders and ground-based ladders. Currently, ground-based ladders are bulky and require additional ground crew for operation, making them quite inconvenient.

[0003] A small and easy-to-operate stepless retractable boarding step has emerged. For example, the utility model with publication number CN208731206U, entitled "A Stepless Retractable Boarding Step and a Stepless Retractable Boarding System," discloses that the stepless retractable boarding step includes a mounting bracket, a rocker wheel mechanism, a transmission mechanism, a step, and a connecting arm. The rocker wheel mechanism is located at the top of the mounting bracket, and the transmission mechanism is located at the bottom of the mounting bracket and is connected to the rocker wheel mechanism. One end of the connecting arm is located on one side of the step and is set at an angle to the step. A slide rail mechanism is provided at the bottom of the mounting bracket, and the end of the connecting arm away from the step is slidably connected to the slide rail mechanism. The connecting arm is also connected to the transmission mechanism. The rocker wheel mechanism can drive the connecting arm to slide relative to the slide rail mechanism through the transmission mechanism.

[0004] However, the aforementioned technologies are not applicable to helicopters that are high off the ground, as this would make it difficult for the pilot to board. Summary of the Invention

[0005] This invention was made to solve the above-mentioned problems, and its purpose is to provide a boarding ladder that can be adapted to helicopters at high altitudes.

[0006] The present invention provides a boarding ladder installed on a helicopter, comprising: a mounting component that can be securely mounted below the helicopter's boarding gate; an altitude reduction assembly connected at one end to the mounting component; and at least one foot pedal component disposed on the altitude reduction assembly. When boarding, the altitude reduction assembly opens and positions the foot pedal component below the helicopter, with the foot surface of the foot pedal component in a horizontal position for the pilot to board.

[0007] The boarding ladder provided by the present invention may also have the following features: the height reduction component includes: a long bar, one end of which is rotatably connected to the mounting component; and a limiting pull rod, one end of which is rotatably connected to the mounting component and the other end of which is slidably connected to the long bar; the pedal component includes: a flip pedal one, which is rotatably connected to the long bar, and when the long bar is in the open state, the flip pedal one is perpendicular to the long bar.

[0008] The boarding ladder provided by the present invention may also have the following features: the height reduction assembly further includes a telescopic auxiliary rod that is telescopically and slidably connected to the long rod, and the height reduction assembly further includes a flip-up step three that is rotatably connected to the end of the telescopic auxiliary rod.

[0009] The boarding ladder provided by the present invention may also have the following features: the mounting component is provided with an elongated limiting hole, one end of the limiting rod is provided with a connecting shaft, the connecting shaft is placed in the elongated limiting hole and rotatably connected to the elongated limiting hole, the elongated rod is provided with a telescopic limiting groove, the limiting rod can slide in the telescopic limiting groove, the other end of the limiting rod is provided with a limiting cap, the limiting cap is installed on the outside of the telescopic limiting groove, and the width of the limiting cap is greater than the width of the telescopic limiting groove.

[0010] The boarding ladder provided by the present invention may also have the following features: wherein the flipping step is provided with a flipping abutment and a stepping part, the flipping abutment and the stepping part are arranged perpendicularly, the telescopic auxiliary rod is provided with a telescopic abutment, and during the extension of the telescopic auxiliary rod, the telescopic abutment gradually abuts against the flipping abutment, causing the flipping step to rotate and making the stepping part perpendicular to the long bar.

[0011] The boarding ladder provided by the present invention may also have the following features: the end of the telescopic auxiliary rod is provided with a pedal limiting groove, and the flipping pedal three includes a flipping limiting part. After the telescopic auxiliary rod is opened, the flipping limiting part abuts against the pedal limiting groove, so that the flipping pedal three is perpendicular to the telescopic auxiliary rod.

[0012] The boarding ladder provided by this invention may also have the following feature: the mounting component is provided with a boarding ladder receiving groove, and a locking hook assembly is installed on the boarding ladder receiving groove.

[0013] The long bar is equipped with a ladder mounting cover, which is fitted with a locking pin. When the ladder mounting cover is closed, the locking hook assembly engages with the locking pin, and the height reduction assembly and the step assembly are locked in the ladder receiving slot.

[0014] The boarding ladder provided by the present invention may also have the following feature: the height reduction component further includes a pull rope, one end of which is connected to the boarding ladder mounting cover, and pulling the other end of the pull rope upward causes the boarding ladder mounting cover to rotate upward and close the boarding ladder mounting cover.

[0015] The boarding ladder provided by this invention may also have the following features: a telescopic groove is provided inside the long bar, and a groove limiting rod is provided inside the telescopic groove; a telescopic auxiliary rod can slide inside the telescopic groove, and a limiting groove is provided on the telescopic auxiliary rod; the groove limiting rod is inserted into the limiting groove to limit the sliding distance of the telescopic auxiliary rod; the mounting components include: a boarding ladder mounting frame, which is fastened to the helicopter, and a boarding ladder receiving slot is provided inside the boarding ladder mounting frame; and a pull rod mounting component, which is fastened to the boarding ladder mounting frame; the long bar is rotatably connected to the pull rod mounting component, and two long bar limiting holes are provided on both sides of the pull rod mounting component; telescopic limiting grooves are provided on both sides of the long bar, and there are two limiting pull rods; the height lowering assembly also includes a tension spring, one end of which is connected to the long bar, and the other end of which is connected to the stepping part.

[0016] The boarding ladder provided by the present invention may also have the following features: wherein the height reduction component includes a telescopic rod, one end of which is telescopically and slidably connected to the mounting component, and the pedal component includes a flip-up pedal two, which is rotatably connected to the other end of the telescopic rod. When the telescopic rod is in the open state, the flip-up pedal two is perpendicular to the telescopic rod.

[0017] The role and effect of invention

[0018] According to the present invention, a boarding ladder is provided in which the height-lowering component is arranged so that the step component is placed below the helicopter during boarding, which can solve the problem that the helicopter is too high and makes it difficult for the pilot to board. Furthermore, the boarding ladder is installed on the helicopter and does not require the carrying of other tools, making boarding very convenient.

[0019] Furthermore, the design of the long bar and limit rod makes the structure more stable, improves the load-bearing capacity of the boarding ladder, and makes boarding more stable.

[0020] Furthermore, the telescopic auxiliary rod design makes the boarding ladder a telescopic and folding design, which reduces the boarding height and the space occupied by the boarding ladder.

[0021] Furthermore, the design of the boarding ladder mounting cover, boarding ladder receiving slot, and locking hook assembly allows the boarding ladder structure to be built into the helicopter, saving space and making boarding more convenient. It also prevents the boarding ladder from being exposed, avoiding aerodynamic damage to the boarding ladder during flight and improving its service life.

[0022] Furthermore, the pull rope design makes closing the ladder mounting cover easier and more convenient. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the boarding ladder in Embodiment 1 of the present invention;

[0024] Figure 2This is a schematic diagram of the boarding ladder in the open state in Embodiment 1 of the present invention;

[0025] Figure 3 This is a partial structural diagram of the boarding ladder in Embodiment 1 of the present invention;

[0026] Figure 4 This is a schematic diagram of the tie rod mounting component in Embodiment 1 of the present invention;

[0027] Figure 5 This is a schematic diagram of the limiting rod in Embodiment 1 of the present invention;

[0028] Figure 6 This is a partial structural diagram of the boarding ladder in Embodiment 1 of the present invention;

[0029] Figure 7 This is a partial structural diagram of the boarding ladder in Embodiment 1 of the present invention;

[0030] Figure 8 This is a schematic diagram of the long bar structure in Embodiment 1 of the present invention;

[0031] Figure 9 This is a partial structural diagram of the boarding ladder in the open state in Embodiment 1 of the present invention;

[0032] Figure 10 This is a structural schematic diagram of the telescopic auxiliary rod and its related structures in Embodiment 1 of the present invention; and

[0033] Figure 11 This is a schematic diagram of the telescopic auxiliary rod and its related structures in the open state in Embodiment 1 of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1-Boarding ladder; 2-Installation component; 3-Height reduction assembly; 4-Pedal assembly; 21-Ladder mounting frame; 22-Pull rod mounting component; 23-Locking hook assembly; 31-Ladder mounting cover; 32-Long bar; 33-Limiting pull rod; 34-Telescopic auxiliary rod; 35-Pull rope; 41-Flipping pedal one; 42-Flipping pedal three; 211-Ladder receiving slot; 212-Pulley; 221-Long bar limiting hole; 311-Locking pin; 321-Telescopic limiting groove; 322-Telescopic slide groove; 323-Slide groove limiting rod; 331-Connecting shaft; 332-Limiting cap; 411-Flipping abutment; 412-Stepping part; 341-Telescopic abutment; 342-Pedal limiting groove; 343-Limiting slide groove. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments, in conjunction with the accompanying drawings, will specifically illustrate the boarding ladder of the present invention.

[0037] Example 1

[0038] Reference Figure 1 and Figure 2 This invention provides a boarding ladder installed on a helicopter. The boarding ladder 1 includes: a mounting component 2, an altitude reduction component 3, and a step component 4. The mounting component 2 can be securely installed below the helicopter's boarding gate (the part outlined in the dashed line represents the helicopter surface). One end of the altitude reduction component 3 is connected to the mounting component 2, and the other end of the altitude reduction component 3 is connected to the step component 4. When boarding, the altitude reduction component 3 opens, placing the step component 4 below the helicopter and positioning the step surface of the step component 4 in a horizontal position for the pilot to board.

[0039] Specifically, refer to Figure 2 The altitude reduction component 3 includes a long bar 32 and a limiting rod 33. One end of the long bar 32 is rotatably connected to the mounting component 2; one end of the limiting rod 33 is rotatably connected to the mounting component 2, and the other end of the limiting rod 33 is slidably connected to the long bar 32. The pedal component 4 includes a flip pedal 41, which is rotatably connected to the long bar 32. When the long bar 32 is in the open state, the long bar lowers the flip pedal 41 so that the flip pedal 41 is located below the helicopter, and the flip pedal 41 is perpendicular to the long bar 32.

[0040] The height reduction assembly 3 also includes a telescopic auxiliary rod 34, which is telescopically and slidably connected to the long rod 32. The height reduction assembly 3 also includes a flip pedal 32, which is rotatably connected to the end of the telescopic auxiliary rod 34. When the long rod 32 is in the open state, the telescopic auxiliary rod 34 extends, and the flip pedal 32 extends with it, so that the flip pedal 32 is perpendicular to the telescopic auxiliary rod 34.

[0041] Reference Figures 3 to 6The mounting component 2 is provided with a long strip limit 221. One end of the limit rod 33 is provided with a connecting shaft 331. The connecting shaft 331 is placed in the long strip limit hole 221 and is rotatably connected to the long strip limit hole 221. The long rod 32 is provided with a telescopic limit groove 321. The limit rod 33 can slide in the telescopic limit groove 321. The other end of the limit rod 33 is provided with a limit cap 332. The limit cap 332 is installed on the outside of the telescopic limit groove 321, and the width of the limit cap 332 is greater than the width of the telescopic limit groove 321. Specifically, the mounting component 2 includes a ladder mounting frame 21 and a pull rod mounting component 22. The ladder mounting frame 21 is fastened to the helicopter, and the ladder receiving slot 211 is located inside the ladder mounting frame 21 and is integrally formed. The pull rod mounting component 22 is fastened to the ladder mounting frame 21 and is located inside the ladder receiving slot 211. The long rod 32 is rotatably connected to the pull rod mounting component 22, and both sides of the pull rod mounting component 22 are provided with long limit holes 221. Both sides of the long rod 32 are provided with telescopic limit slots 321. One limit pull rod 33 is installed on the left side of the pull rod mounting component 22, and the other limit pull rod 33 is installed on the right side of the pull rod mounting component 22. This enhances the stability of the long rod 32 in the open state and improves the load capacity. Furthermore, the setting of the limit pull rod also limits the rotation angle of the long rod, allowing the long rod to rotate to a predetermined position, thereby making the stepping part 412 of the flip pedal 41 close to the horizontal position.

[0042] Reference Figure 10 and Figure 11 The flip pedal 41 is provided with a flipping abutment part 411 and a stepping part 412. The flipping abutment part 411 and the stepping part 412 are arranged perpendicularly. The telescopic auxiliary rod 34 is provided with a telescopic abutment part 341. During the extension of the telescopic auxiliary rod 34, the telescopic abutment part 341 gradually approaches and abuts against the flipping abutment part 411, causing the flip pedal 41 to rotate and flip out, thereby making the stepping part 412 and the long bar 32 nearly perpendicular (see reference). Figures 10 to 11 (The process of change).

[0043] The end of the telescopic auxiliary rod 34 is provided with a pedal limiting groove 342, and the flip pedal 32 is provided with a flip limiting part 421. After the telescopic auxiliary rod 34 is opened, the flip limiting part 421 flips out under the action of gravity, and the flip limiting part 421 abuts against the pedal limiting groove 342, so that the flip pedal 32 is perpendicular to the telescopic auxiliary rod 34 (see reference). Figures 10 to 11 (The process of change).

[0044] Reference Figures 1 to 2The long bar 32 is equipped with a ladder mounting cover 31, and a locking hook assembly 23 is installed on the ladder receiving slot 211. A locking pin 311 is installed on the ladder mounting cover 31. When the ladder mounting cover 31 is closed, the locking hook assembly 12 engages with the locking pin 311, and the height lowering assembly 3 and the step assembly 4 are locked inside the ladder receiving slot 211. This allows the boarding ladder 1 to be built into the helicopter, eliminating the need for manual transport of a boarding device and making the boarding process more convenient.

[0045] Reference Figure 2 The height lowering component 3 also includes a pull rope 35, one end of which is connected to the ladder mounting cover 31. Pulling the other end of the pull rope 35 upwards causes the ladder mounting cover 31 to rotate upwards and close. Specifically, the ladder mounting frame 21 is provided with pulleys 212, and two pulleys 212 abut against each other, leaving a gap in the middle for the pull rope 35 to pass through. The other end of the pull rope 35 passes through this gap, making it easier and more convenient to pull the pull rope 35 upwards.

[0046] Refer to 9 to Figure 11 The long rod 32 is provided with a telescopic groove 322, and the telescopic groove 322 is provided with a groove limiting rod 323. The telescopic auxiliary rod 34 can slide in the telescopic groove 322. The telescopic groove 322 and the groove limiting rod 323 are fastened together. The telescopic auxiliary rod 34 is provided with a limiting groove 343. The groove limiting rod 323 is inserted into the limiting groove 343. When the telescopic auxiliary rod 34 slides in the telescopic groove 322 on the long rod 32, the groove limiting rod 323 is used to limit the sliding distance of the telescopic auxiliary rod 34.

[0047] The height lowering assembly 3 also includes a tension spring (not shown in the figure), one end of which is connected to the long bar 32 and the other end of which is connected to the foot pedal 412. Specifically, the end of the tension spring connected to the long bar 32 is located near the locking pin 311, and the end of the tension spring connected to the foot pedal 412 is located on the foot pedal and at the bottom of the foot pedal surface. During the closing of the ladder mounting cover 31, the telescopic auxiliary rod 34 retracts into the long bar 32 under the action of gravity, and the telescopic abutment part 341 on the telescopic auxiliary rod 34 moves away from the flip abutment part 411. At this time, the tension spring can pull the flip pedal 41 back to its original position and make the foot pedal 412 abut against the long bar.

[0048] Example 2

[0049] Unlike the above, the height reduction component 3 includes a telescopic rod, one end of which is slidably connected to the mounting component 2. The pedal component 4 includes a flip pedal 2, which is rotatably connected to the other end of the telescopic rod. When the telescopic rod is in the open state, the flip pedal 2 is perpendicular to the telescopic rod.

[0050] Working principle:

[0051] When boarding is required, the locking hook assembly 23 is opened, and the ladder mounting cover 31 automatically flips out under the action of gravity. Then, the telescopic auxiliary rod 34 inside the long rod 32 also extends under the action of gravity, and the flipping pedal three 42 also automatically flips out under the action of gravity, and is perpendicular to the telescopic auxiliary rod 34. During the extension of the telescopic auxiliary rod 34, the telescopic abutment part 341 on the telescopic auxiliary rod 34 abuts against the flipping abutment part 411, so that the flipping pedal one 41 automatically flips out. After it is in place, the pilot steps on the flipping pedal three 42 and the flipping pedal one 41 to board the aircraft.

[0052] After boarding, the operator pulls the rope 35 upwards, causing the ladder mounting cover 31 to rotate upwards. Consequently, the telescopic auxiliary rod 34 automatically retracts into the long rod 32 under the action of gravity, and the flipping pedal 32 also automatically folds back under the action of gravity. As a result, the telescopic abutment part 341 on the telescopic auxiliary rod 34 moves away from the flipping abutment part 411, and then the tension spring pulls the flipping pedal 41 back to its original position. Finally, the locking hook assembly 12 engages with the locking pin 311, locking the height reduction assembly 3 and the pedal component 4 into the ladder receiving slot 111.

[0053] The above embodiments are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

Claims

1. A boarding ladder, installed on a helicopter, characterized in that, include: Mounting components are securely installed below the helicopter's boarding gate; A height-reducing component, one end of which is connected to the mounting component; as well as At least one pedal component is provided on the height reduction assembly. During boarding, the altitude reduction assembly is deployed, and the pedal component is positioned below the helicopter, with the step surface of the pedal component in a horizontal position for the pilot to board. The height reduction component includes: A long rod, one end of which is rotatably connected to the mounting component; and The limiting rod has one end rotatably connected to the mounting component and the other end slidably connected to the long rod. The pedal component includes: a flip pedal, which is rotatably connected to the long bar. When the long bar is in the open state, the flip pedal is perpendicular to the long bar; The mounting component is provided with an elongated limiting hole, and one end of the limiting rod is provided with a connecting shaft. The connecting shaft is placed in the elongated limiting hole and is rotatably connected to the elongated limiting hole. The elongated rod is provided with a telescopic limiting groove, and the limiting rod can slide within the telescopic limiting groove. The other end of the limiting rod is provided with a limiting cap, which is installed on the outside of the telescopic limiting groove, and the width of the limiting cap is greater than the width of the telescopic limiting groove.

2. The boarding ladder according to claim 1, characterized in that: in, The height reduction assembly also includes a telescopic auxiliary rod, which is telescopically and slidably connected to the long rod. The height reduction assembly also includes a flip pedal three, which is rotatably connected to the end of the telescopic auxiliary rod.

3. The boarding ladder according to claim 2, characterized in that: in, The flip pedal is provided with a flipping abutment and a stepping part. The flipping abutment and the stepping part are arranged perpendicularly. The telescopic auxiliary rod is provided with a telescopic abutment. During the extension of the telescopic auxiliary rod, the telescopic abutment gradually abuts against the flipping abutment, causing the flip pedal to rotate and making the stepping part perpendicular to the long rod.

4. The boarding ladder according to claim 3, characterized in that: in, The end of the telescopic auxiliary rod is provided with a pedal limiting groove, and the flip pedal three includes a flip limiting part. After the telescopic auxiliary rod is opened, the flip limiting part abuts against the pedal limiting groove, so that the flip pedal three is perpendicular to the telescopic auxiliary rod.

5. The boarding ladder according to claim 4, characterized in that: in, The mounting component is provided with a ladder receiving slot, and a locking hook assembly is installed on the ladder receiving slot. The long bar is provided with a ladder mounting cover, and a locking pin is installed on the ladder mounting cover. When the ladder mounting cover is closed, the locking hook assembly is engaged with the locking pin, and the height reducing assembly and the pedal component are locked in the ladder receiving groove.

6. The boarding ladder according to claim 5, characterized in that: in, The height reduction assembly also includes a pull rope, one end of which is connected to the ladder mounting cover. Pulling the other end of the pull rope upward causes the ladder mounting cover to rotate upward and close.

7. The boarding ladder according to claim 6, Its features are: The long bar has a telescopic groove, and the telescopic groove has a groove limiting rod. The telescopic auxiliary rod can slide in the telescopic groove, and the telescopic auxiliary rod has a limiting groove. The groove limiting rod is inserted into the limiting groove to limit the sliding distance of the telescopic auxiliary rod. The mounting components include: a ladder mounting frame, which is securely connected to the helicopter, and a ladder receiving slot disposed within the ladder mounting frame; and A pull rod mounting component is fastened to the ladder mounting frame. The long bar is rotatably connected to the pull rod mounting component, and two long bar limiting holes are provided on both sides of the pull rod mounting component. The long bar is provided with telescopic limiting grooves on both sides, and there are two limiting pull rods. The height reduction assembly also includes a tension spring, one end of which is connected to the long bar, and the other end of which is connected to the foot pedal.

8. The boarding ladder according to claim 1, characterized in that: in, The height reduction assembly includes a telescopic rod, one end of which is slidably connected to the mounting component. The pedal component includes a second flip pedal, which is rotatably connected to the other end of the telescopic rod. When the telescopic rod is in the open state, the second flip pedal is perpendicular to the telescopic rod.

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