Aircraft maintenance platform and ladder assembly anti-collision alarm system

Abstract

The utility model discloses an anti-collision alarm system for an aircraft maintenance platform and a ladder assembly. The anti-collision alarm system comprises the aircraft maintenance platform or the ladder assembly, an alarm, a proximity sensor and a travel switch, the bottom of the aircraft maintenance platform or the ladder assembly is provided with rollers and foot supports which can be folded or unfolded; the proximity sensor is mounted on the aircraft maintenance platform or the ladder assembly, is electrically connected with the alarm and is used for driving the alarm to give an alarm when sensing that an obstacle approaches; the travel switch is electrically connected with the proximity sensor and used for controlling the proximity sensor to be powered on or powered off, the travel switch is installed on the aircraft maintenance platform or the ladder assembly, and the travel switch can be triggered or switched off when a foot support on the aircraft maintenance platform or the ladder assembly is folded or unfolded. The device can give an alarm and warn in the moving process of the aircraft maintenance platform or the ladder assembly, so that the aircraft maintenance platform or the ladder assembly is prevented from colliding with an aircraft or other obstacles.

Description

Technical Field

[0001] This utility model relates to the field of aviation technology, specifically to an aircraft maintenance platform and a ladder anti-collision alarm system. Background Technology

[0002] Aircraft maintenance platforms or ladders are manually pushed to the side of the aircraft. Due to their large size, blind spots exist during this process, potentially leading to collisions. Existing maintenance platforms and ladders are simple frame structures, requiring manual observation of distances during movement. However, since each person's viewing angle differs, the risk of collision remains. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an anti-collision alarm system for an aircraft maintenance platform and ladder, which serves to alarm and warn during the movement of the aircraft maintenance platform or ladder, thereby preventing the aircraft maintenance platform or ladder from colliding with the aircraft or other obstacles.

[0004] This utility model provides an anti-collision alarm system for an aircraft maintenance platform and ladder, including an aircraft maintenance platform or ladder, wherein the bottom of the aircraft maintenance platform or ladder is provided with rollers and retractable or retractable foot supports.

[0005] It also includes alarms, proximity sensors, and limit switches;

[0006] The proximity sensor is installed on the aircraft maintenance platform or ladder and is electrically connected to the alarm, which is used to activate the alarm when an obstacle is detected approaching.

[0007] Limit switch, which is electrically connected to proximity sensor, is used to control the proximity sensor to be powered on or off. The limit switch is installed on the aircraft maintenance platform or ladder, and can be triggered or disconnected when the legs on the aircraft maintenance platform or ladder are raised or lowered.

[0008] Furthermore, each of the rollers and foot supports is provided with four and is located at the four corners of the bottom of the aircraft maintenance platform or ladder;

[0009] The limit switch is provided in four series, and each limit switch corresponds to one of the foot supports.

[0010] Furthermore, the proximity sensor is a photoelectric switch.

[0011] Furthermore, the aircraft maintenance platform or ladder is equipped with a power supply;

[0012] The positive terminal of the power supply is connected to the first terminal of the photoelectric switch via a limit switch, and the second terminal of the photoelectric switch is connected to the negative terminal of the power supply.

[0013] The positive terminal of the power supply is connected to the third terminal of the photoelectric switch, the fourth terminal of the photoelectric switch is connected to the first terminal of the alarm, and the second terminal of the alarm is connected to the negative terminal of the power supply.

[0014] Furthermore, the power source is a storage battery.

[0015] Furthermore, the photoelectric switch is located on the upper part of the aircraft maintenance platform or ladder, while the alarm and battery are located on the lower part of the aircraft maintenance platform or ladder.

[0016] Furthermore, the alarm is a buzzer.

[0017] Furthermore, the foot support includes a telescopic column facing downward and a support plate located at the lower end of the telescopic column. The side of the support plate is connected to a contact member extending upward outside the telescopic column, and the upper end of the contact member is provided with a driving inclined surface facing obliquely upward.

[0018] The limit switch is horizontally fixed to the bottom of the aircraft maintenance platform or ladder, and the end of the limit switch push rod abuts against the drive ramp.

[0019] The beneficial effects of this utility model are reflected in:

[0020] During the movement of the aircraft maintenance platform or ladder, the bottom supports are retracted, the rollers touch the ground, and the aircraft maintenance platform or ladder can move normally. When the supports are retracted, they touch the limit switch, causing the proximity sensor to turn off and become active. During the movement, if an obstacle or aircraft enters the sensing area of ​​the proximity sensor, the proximity sensor will trigger an alarm, thereby alerting the staff that the aircraft maintenance platform or ladder is approaching the aircraft or other obstacles, thus preventing the aircraft maintenance platform or ladder from colliding with the aircraft or other obstacles.

[0021] When the aircraft maintenance platform or ladder is stationary, its bottom supports are lowered and placed on the ground to prevent the platform or ladder from moving. When the supports are lowered, the limit switch automatically disconnects, turning off the proximity sensor and keeping it in a non-power-off state. If a person or object approaches the proximity sensor at this time, the alarm will not be triggered.

[0022] Therefore, this application can ensure that the aircraft maintenance platform or ladder avoids collisions with aircraft or obstacles during movement, thereby improving the safety of equipment and aircraft. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0025] Figure 2 This is a front view of an embodiment of the present utility model;

[0026] Figure 3 for Figure 2 AA section view;

[0027] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0028] Figure 5 This is a circuit schematic diagram of an embodiment of the present invention.

[0029] In the attached diagram, 100-Aircraft maintenance platform or ladder; 200-Roller; 300-Foot support; 310-Telescopic column; 320-Support plate; 330-Contact component; 331-Drive ramp; 400-Alarm; 500-Proximity sensor; 600-Limit switch; 700-Power supply. Detailed Implementation

[0030] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0031] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0032] like Figures 1-5 As shown, this utility model embodiment provides an anti-collision alarm system for an aircraft maintenance platform and ladder, including an aircraft maintenance platform or ladder 100, an alarm 400, a proximity sensor 500, and a limit switch 600.

[0033] Reference Figure 1 , Figure 2 and Figure 3The bottom of the aircraft maintenance platform or ladder 100 is equipped with casters 200 and retractable or retractable foot supports 300. The casters 200 facilitate the movement of the aircraft maintenance platform or ladder 100. When the aircraft maintenance platform or ladder 100 does not need to be moved, the foot supports 300 can be lowered to support it on the ground.

[0034] Generally, there are four casters 200 and four feet 300, located at the four corners of the bottom of the aircraft maintenance platform or ladder 100.

[0035] Reference Figure 2 The proximity sensor 500 is installed on the aircraft maintenance platform or ladder 100 and is electrically connected to the alarm 400. It is used to activate the alarm 400 when an obstacle is detected approaching. The photoelectric switch is specifically located on the upper part of the aircraft maintenance platform or ladder 100.

[0036] Optionally, the proximity sensor 500 is preferably a photoelectric switch.

[0037] Optionally, the alarm 400 is a buzzer.

[0038] Reference Figures 3-5 Limit switch 600 is electrically connected to proximity sensor 500 and is used to control proximity sensor 500 to be powered on or off. Limit switch 600 is installed on aircraft maintenance platform or ladder 100 and can be triggered or disconnected when the foot support 300 on aircraft maintenance platform or ladder 100 is raised or lowered.

[0039] In some embodiments, refer to Figure 3 and Figure 4 The foot support 300 includes a telescopic column 310 facing downward and a support plate 320 located at the lower end of the telescopic column 310. The side of the support plate 320 is connected to a contact member 330 extending upward outside the telescopic column 310. The upper end of the contact member 330 is provided with a driving inclined surface 331 facing diagonally upward.

[0040] Limit switch 600 is horizontally fixed at the bottom of the aircraft maintenance platform or ladder 100, and the end of the push rod of limit switch 600 abuts against the drive ramp 331.

[0041] When the telescopic column 310 retracts and raises the support plate 320, the support plate 320 will drive the contact member 330 to move upward. The contact member 330 will push the push rod of the limit switch 600 to the side through the drive ramp 331 at its upper end, thereby triggering the limit switch 600. In this way, the limit switch 600 can be triggered when the foot support 300 on the aircraft maintenance platform or ladder 100 is retracted. When the telescopic column 310 extends and lowers the support plate 320, the support plate 320 will drive the contact member 330 to move downward. The push rod of the limit switch 600 will reset, and the limit switch 600 will return to the normally open state. In this way, the limit switch 600 can be disconnected when the foot support 300 on the aircraft maintenance platform or ladder 100 is lowered.

[0042] In some embodiments, refer to Figure 5 Meanwhile, there are four limit switches 600 connected in series, and each limit switch 600 corresponds to one of the legs 300. In this way, the proximity sensor 500 can only be powered on and work when all four legs 300 of the aircraft maintenance platform or ladder 100 are retracted and the four limit switches 600 are triggered at the same time.

[0043] In some embodiments, refer to Figure 5 The aircraft maintenance platform or ladder 100 is equipped with a power supply 700, which may be a battery. The alarm 400 and the battery are specifically located at the lower part of the aircraft maintenance platform or ladder 100.

[0044] The positive terminal of the power supply 700 is connected to the first terminal (brown wire terminal) of the photoelectric switch via the limit switch 600, and the second terminal (blue wire terminal) of the photoelectric switch is connected to the negative terminal of the power supply 700.

[0045] The positive terminal of the power supply 700 is connected to the third terminal (white wire terminal) of the photoelectric switch, the fourth terminal (black wire terminal) of the photoelectric switch is connected to the first terminal (red wire terminal) of the alarm 400, and the second terminal (black wire terminal) of the alarm 400 is connected to the negative terminal of the power supply 700.

[0046] When the four limit switches 600 are closed, the photoelectric switch is energized. When the photoelectric switch senses something approaching, it outputs a signal to drive the alarm 400 to work and trigger an alarm.

[0047] It is understood that the photoelectric switch in this embodiment can drive the alarm 400 to work by driving the load through a transistor. The principle is as follows: the output signal of the photoelectric switch is connected to the base of the transistor. When the photoelectric switch is triggered and outputs a high level, the transistor is turned on, so that the alarm 400 connected between the collector and the power supply 700 is powered on and works. If the photoelectric switch outputs a low level, the transistor is turned off, and the alarm 400 is powered off. This technology is existing technology and will not be described in detail here.

[0048] During the movement of the aircraft maintenance platform or ladder 100, its bottom support 300 retracts, the rollers 200 touch the ground, and the aircraft maintenance platform or ladder 100 can move normally. When the support 300 retracts, it touches the limit switch 600, causing the proximity sensor 500 to turn off and become active. During the movement, if an obstacle or aircraft enters the sensing area of ​​the proximity sensor 500, the proximity sensor 500 will activate the alarm 400 to alert the staff, thereby prompting the personnel that the aircraft maintenance platform or ladder 100 is approaching the aircraft or other obstacles, thus preventing the aircraft maintenance platform or ladder 100 from colliding with the aircraft or other obstacles.

[0049] When the aircraft maintenance platform or ladder 100 is stationary, its bottom foot support 300 is lowered and supported on the ground to prevent the aircraft maintenance platform or ladder 100 from moving. When the foot support 300 is lowered, the limit switch 600 is automatically disconnected, so that the proximity sensor 500 is turned off and in a non-power-off state. At this time, if a person or object approaches the proximity sensor 500, the alarm 400 will not be triggered.

[0050] Therefore, this application ensures that the aircraft maintenance platform or ladder 100 avoids collisions with aircraft or obstacles during movement, thereby improving the safety of the equipment and aircraft.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An aircraft maintenance platform and ladder anti-collision alarm system, comprising an aircraft maintenance platform or ladder, the bottom of the aircraft maintenance platform or ladder being provided with rollers and retractable or extendable outriggers, characterized in that: it further comprises an alarm, a proximity sensor and a travel switch; the proximity sensor is mounted on the aircraft maintenance platform or ladder and electrically connected to the alarm, and is configured to drive the alarm to alarm when an obstacle is sensed to approach; the travel switch is electrically connected to the proximity sensor, and is configured to control the power-on or power-off of the proximity sensor; the travel switch is mounted on the aircraft maintenance platform or ladder, and is configured to be triggered or disconnected when the outriggers of the aircraft maintenance platform or ladder are retracted or extended.

2. The aircraft maintenance platform and ladder anti-collision alarm system according to claim 1, characterized in that: the rollers and the outriggers are each provided with four and are respectively located at the four corners of the bottom of the aircraft maintenance platform or ladder; the travel switch is provided with four, and the four travel switches are connected in series, and each of the travel switches corresponds to each of the outriggers.

3. The aircraft maintenance platform and ladder anti-collision alarm system according to claim 1, characterized in that: the proximity sensor is a photoelectric switch.

4. The aircraft maintenance platform and ladder anti-collision alarm system according to claim 3, characterized in that: the aircraft maintenance platform or ladder is provided with a power supply; the positive pole of the power supply is connected to the first terminal of the photoelectric switch through the travel switch, and the second terminal of the photoelectric switch is connected to the negative pole of the power supply; the positive pole of the power supply is connected to the third terminal of the photoelectric switch, the fourth terminal of the photoelectric switch is connected to the first terminal of the alarm, and the second terminal of the alarm is connected to the negative pole of the power supply.

5. The aircraft maintenance platform and ladder anti-collision alarm system according to claim 4, characterized in that: the power supply is a storage battery.

6. The aircraft maintenance platform and ladder anti-collision alarm system according to claim 5, characterized in that: the photoelectric switch is arranged on the upper part of the aircraft maintenance platform or ladder, and the alarm and the storage battery are arranged on the lower part of the aircraft maintenance platform or ladder.

7. The aircraft maintenance platform and ladder anti-collision alarm system according to claim 1, characterized in that: the alarm is a buzzer.

8. The aircraft maintenance platform and ladder anti-collision alarm system according to claim 1, characterized in that: the outrigger comprises a telescopic column arranged downward and a support plate arranged at the lower end of the telescopic column, the side of the support plate is connected with a touch piece extending upward outside the telescopic column, and the upper end of the touch piece is provided with a driving inclined surface inclined upward; the travel switch is horizontally fixed on the bottom of the aircraft maintenance platform or ladder, and the end of the push rod of the travel switch abuts against the driving inclined surface. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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