Dead weight type detection interlocking device for airplane ground air conditioner air supply hose trolley

Abstract

The utility model discloses an airplane ground air conditioner air supply hose trolley self-weight type detection interlocking device which comprises a trolley body, a chassis, an elastic reset device, a microswitch and a tray, and an air supply hose is movably placed in the trolley body. The tray is supported through the elastic reset device, so that the tray is jacked up during no-load, and when the air supply hose is placed in the trolley main body, the weight of the air supply hose is applied to the tray, so that the tray moves downwards to be in contact with the microswitch arranged on the chassis, and the tray is lifted up. Accordingly, a corresponding detection signal is generated through the microswitch, and the control system judges that the air supply hose is placed in the trolley body. When the microswitch does not generate a corresponding signal, it is judged that the air supply hose is not returned in time, movement of the boarding bridge is locked, the situation that equipment and an airplane are damaged due to accidental dragging caused by movement of the boarding bridge is avoided, and safe operation of the airport airplane ground air conditioning unit is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of civil aviation equipment technology, and in particular to a self-weight detection interlocking device for an aircraft ground air conditioning supply hose trolley. Background Technology

[0002] Currently, the trolleys commonly used to store air supply hoses in aircraft ground air conditioning units only serve the purpose of storing the hoses. Whether the hoses are returned to the trolley after being removed by ground staff can only be determined visually by observing the trolley; operators of the boarding bridge and related equipment cannot directly see this. Since both the trolley and the hoses are attached to the boarding bridge, if the hoses are not promptly returned to the trolleys when the boarding bridge operator starts the bridge, accidental dragging can easily occur, potentially causing damage to equipment and the aircraft.

[0003] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a self-weight detection and interlocking device for aircraft ground air conditioning air supply hose trolleys. This device solves the problem that if the air supply hose trolleys and the air supply hoses placed on them are not stored back in their proper positions after use, it is impossible to detect and lock the movement of the boarding bridge in time, which may cause accidental dragging and damage to equipment and aircraft. This ensures the safe operation of airport aircraft ground air conditioning units.

[0005] The technical solution of this utility model is as follows: This utility model provides a self-weight detection interlocking device for an aircraft ground air conditioning air supply hose trolley, comprising: a trolley body connected to a boarding bridge, a chassis disposed inside the trolley body, a plurality of elastic reset devices disposed on the chassis, a plurality of micro switches disposed on the chassis, and a tray disposed on the elastic reset devices. An air supply hose is movably placed inside the trolley body. When the air supply hose is placed on the tray, the elastic reset devices are compressed and moved downward, causing the bottom of the tray to make active contact with the micro switches. A control box is disposed on the trolley body, and a control system is built into the control box. The micro switches are electrically connected to the control system.

[0006] Furthermore, the elastic reset device comprises: a guide base disposed on the chassis, a guide sleeve disposed at the bottom of the tray, and a spring disposed between the guide base and the guide sleeve. The guide sleeve is nested on the outside of the guide base, and clearance gaps are respectively provided between the bottom of the guide sleeve and the chassis, and between the top of the guide base and the tray.

[0007] Furthermore, the clearance is greater than the distance from the tray to the maximum stroke of the microswitch.

[0008] Furthermore, the elastic reset device and the micro switch are respectively arranged in a symmetrical array on the chassis.

[0009] Furthermore, the control system built into the control box is connected to the boarding bridge control circuit and feeds back the detection information of the micro switch to the boarding bridge control circuit in real time.

[0010] Furthermore, the control box is equipped with an audible and visual alarm, which is electrically connected to the control system. When the microswitch does not detect that the air supply hose is placed on the tray and the boarding bridge control circuit starts the boarding bridge evacuation operation, the audible and visual alarm is activated.

[0011] Furthermore, the control system built into the control box is connected to the control circuit of the aircraft ground air conditioning unit. The control box is equipped with a touch screen, a working indicator light, and a reset button, which are electrically connected to the control system.

[0012] Furthermore, the trolley body is provided with a connecting rod, and the bottom of the trolley body is provided with several omnidirectional wheels. One end of the connecting rod is connected to the trolley body, and the other end of the connecting rod is connected to the boarding bridge.

[0013] Using the above solution, this utility model supports the tray through an elastic reset device, thereby lifting the tray when unloaded. When the air supply hose is placed inside the trolley body, the weight of the air supply hose is applied to the tray, compressing the elastic reset device and causing the tray to move downwards. This allows it to contact a microswitch mounted on the chassis, generating a corresponding detection signal that enables the control system to determine that the air supply hose has been placed in the trolley body. If the microswitch does not generate a corresponding signal, it is determined that the air supply hose has not returned to its position in time, and the movement of the boarding bridge is locked to prevent accidental dragging and damage to equipment and aircraft caused by the boarding bridge's movement, effectively ensuring the safe operation of the airport aircraft ground air conditioning unit. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is the front view of the present invention.

[0016] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0017] Figure 4 This is the left view of the present invention. Detailed Implementation

[0018] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Please see Figure 1 , Figure 2 This utility model provides a self-weight detection interlocking device for an aircraft ground air conditioning air supply hose 5 trolley, comprising: a trolley body 2 connected to a boarding bridge 1, a chassis 31 disposed inside the trolley body 2, a plurality of elastic reset devices 32 disposed on the chassis 31, a plurality of micro switches 33 disposed on the chassis 31, and a tray 34 disposed on the elastic reset devices 32. An air supply hose 5 is movably placed inside the trolley body 2. When the air supply hose 5 is placed on the tray 34, the elastic reset devices 32 are compressed and moved downward, causing the bottom of the tray 34 to make active contact with the micro switches 33. A control box 4 is disposed on the trolley body 2, and the control box 4 contains a control system. The micro switches 33 are electrically connected to the control system.

[0020] In its stowed state, the air supply hose 5 is placed on the chassis 31 inside the trolley body 2, causing the elastic reset device 32 to compress downwards, making the bottom surface of the tray 34 come into contact with the micro switch 33. The micro switch 33 will then send a corresponding data signal, indicating that the air supply hose 5 is currently placed inside the trolley body 2. When it is necessary to use the aircraft ground air conditioning unit to supply the aircraft with the corresponding cool air, hot air, or fresh air, the air supply hose 5 is removed from the trolley body 2, and the aircraft ground air conditioning unit and the aircraft are connected to meet the air supply requirements. When it is necessary to evacuate the boarding bridge 1, if the air supply hose 5 is not returned to the trolley body 2, the boarding bridge control circuit will determine, based on the data information from the returned micro switch 33, that the air supply hose 5 has not been returned to its position in time, and will lock it to prevent the boarding bridge 1 from moving and causing accidental dragging, which could lead to damage to the equipment and the aircraft. This effectively ensures the safe transport of the airport aircraft ground air conditioning unit.

[0021] In some embodiments, please refer to Figure 3The elastic reset device 32 comprises: a guide base 321 mounted on the chassis 31, a guide sleeve 322 mounted on the bottom of the tray 34, and a spring 323 positioned between the guide base 321 and the guide sleeve 322. The guide sleeve 322 is nested around the outside of the guide base 321. Clearance gaps are provided between the bottom of the guide sleeve 322 and the chassis 31, and between the top of the guide base 321 and the tray 34. When the air hose 5 is placed on the tray 34, the increased weight on the tray 34 causes the spring 323 to compress and contract, moving the tray 34 downwards and contacting the micro switch 33. The micro switch 33 then sends a signal to the control system, indicating that the air hose 5 is placed in the trolley body 2. By setting up the nested guide base 321 and guide sleeve 322, the vertical movement of the tray 34 is guided, preventing uneven weight distribution that could cause warping and prevent effective contact with the micro switch 33, thus avoiding false alarms.

[0022] In some embodiments, the clearance is greater than the distance from the tray 34 to the maximum stroke of the micro switch 33, so as to facilitate effective detection of the downward movement of the tray 34 by the micro switch 33, thereby determining whether the air supply hose 5 is placed on the tray 34 for storage.

[0023] In some embodiments, the elastic reset device 32 and the micro switch 33 are symmetrically arrayed on the chassis 31. The symmetrical array of multiple elastic reset devices 32 on the chassis 31 provides stable support for the tray 34, ensuring that the tray 34 can move stably downwards when the air hose 5 is placed on it, reducing the possibility of warping. Simultaneously, the symmetrical array of micro switches 33 on the chassis 31 allows different micro switches 33 to contact the bottom surface of the tray 34 when warping occurs, generating corresponding data signals to determine whether the air hose 5 has been placed inside the trolley body 2, reducing the possibility of misjudgment.

[0024] In some embodiments, the control system built into the control box 4 is connected to the boarding bridge control circuit and feeds back the detection information of the micro switch 33 to the boarding bridge control circuit in real time. The control system and the boarding bridge control circuit are electrically connected to achieve signal transmission. Before the boarding bridge control circuit starts and drives the boarding bridge 1 to evacuate, it judges the detection signal returned by the micro switch 33. If the micro switch 33 returns an active control signal, it is determined that the air hose 5 has been placed in the trolley body 2, and the boarding bridge 1 can be safely evacuated. If the micro switch 33 does not return a corresponding active control signal, it is determined that the air hose 5 has not been placed back into the trolley body 2 in time. The boarding bridge control circuit then locks the movement of the boarding bridge 1, preventing dragging between the aircraft ground air conditioning unit and the aircraft due to the boarding bridge 1 evacuation, which could lead to accidental damage to the equipment or the aircraft, effectively improving overall operational safety.

[0025] In some embodiments, please refer to Figure 4 The control box 4 is equipped with an audible and visual alarm 41, which is electrically connected to the control system. When the microswitch 33 fails to detect the air hose 5 being placed on the tray 34 and the boarding bridge control circuit initiates the boarding bridge 1 evacuation operation, the audible and visual alarm 41 is activated. When the microswitch 33 fails to detect the air hose 5 being returned to the trolley body 2, and the boarding bridge control circuit has entered the boarding bridge 1 evacuation state, the control system sends a corresponding data signal to the boarding bridge control circuit as a warning. Simultaneously, the audible and visual alarm 41 is activated, with high-frequency flashing lights and a buzzer sound to remind ground operators that the air hose 5 has not yet been returned to the trolley body 2, thereby attracting their attention and prompting timely handling of the problem to prevent damage to the aircraft and equipment due to dragging.

[0026] In some embodiments, the control system built into the control box 4 is connected to the aircraft ground air conditioning unit control circuit. The control box 4 is equipped with a touch screen display 42, a working indicator light 43, and a reset button 44, which are electrically connected to the control system. By electrically connecting the control system to the aircraft ground air conditioning unit control circuit, the working indicator light 43 is activated when the aircraft ground air conditioning unit is working, indicating the working status of the aircraft ground air conditioning unit. This allows for comparison of the working status of the aircraft ground air conditioning unit with the information detected by the microswitch 33, determining whether the aircraft ground air conditioning unit is in working condition during the evacuation of boarding bridge 1, effectively ensuring overall safety. Simultaneously, the working status and duration of the aircraft ground air conditioning unit are displayed on the touch screen display 42, meeting the operator's needs for monitoring and tracking the working status of the aircraft ground air conditioning unit. It also allows the operator of boarding bridge 1 to determine whether the current status is suitable for evacuation work, improving safety.

[0027] In some embodiments, the trolley body 2 is provided with a connecting rod 21, and the bottom of the trolley body 2 is provided with a plurality of casters 22. One end of the connecting rod 21 is connected to the trolley body 2, and the other end of the connecting rod 21 is connected to the boarding bridge 1. The trolley body 2 and the boarding bridge 1 are connected by the connecting rod 21, and the trolley body 2 is provided with a plurality of casters 22 at the bottom of the trolley body 2, so that the trolley body 2 moves synchronously with the boarding bridge 1 while the boarding bridge 1 moves.

[0028] In summary, this invention uses an elastic reset device to support the tray, thus lifting the tray when unloaded. When the air supply hose is placed inside the trolley body, the weight of the hose compresses the elastic reset device, causing the tray to move downwards and contact a microswitch mounted on the chassis. The microswitch generates a detection signal, allowing the control system to determine that the air supply hose is properly positioned within the trolley body. If the microswitch does not generate a signal, it indicates that the air supply hose has not returned to its original position, and the movement of the boarding bridge is locked to prevent accidental dragging and potential damage to equipment and the aircraft. This effectively ensures the safe operation of the airport's aircraft ground air conditioning units.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-weight detection interlocking device for an aircraft ground air conditioning supply hose trolley, characterized in that, include: The system includes a trolley body connected to a boarding bridge, a chassis located inside the trolley body, several elastic reset devices mounted on the chassis, several micro switches mounted on the chassis, and a tray mounted on the elastic reset devices. An air supply hose is movably placed inside the trolley body. When the air supply hose is placed on the tray, the elastic reset devices are compressed and moved downward, causing the bottom of the tray to make active contact with the micro switches. A control box is mounted on the trolley body, and the control box contains a control system. The micro switches are electrically connected to the control system.

2. The self-weight detection interlocking device for the aircraft ground air conditioning supply hose trolley according to claim 1, characterized in that, The elastic reset device comprises: a guide base disposed on the chassis, a guide sleeve disposed at the bottom of the tray, and a spring disposed between the guide base and the guide sleeve. The guide sleeve is nested on the outside of the guide base, and clearance gaps are respectively provided between the bottom of the guide sleeve and the chassis, and between the top of the guide base and the tray.

3. The self-weight detection interlocking device for the aircraft ground air conditioning supply hose trolley according to claim 2, characterized in that, The clearance is greater than the distance from the tray to the maximum travel point of the microswitch.

4. The self-weight detection interlocking device for the aircraft ground air conditioning supply hose trolley according to claim 1, characterized in that, The elastic reset device and the micro switch are symmetrically distributed in an array on the chassis.

5. The self-weight detection interlocking device for the aircraft ground air conditioning supply hose trolley according to claim 1, characterized in that, The control system built into the control box is connected to the boarding bridge control circuit and feeds back the detection information of the micro switch to the boarding bridge control circuit in real time.

6. The aircraft ground air conditioning supply hose trolley self-weight detection interlock device according to claim 5, characterized in that, The control box is equipped with an audible and visual alarm, which is electrically connected to the control system. When the micro switch does not detect that the air supply hose is placed on the tray and the boarding bridge control circuit starts the boarding bridge evacuation operation, the audible and visual alarm is activated.

7. The self-weight detection interlocking device for the aircraft ground air conditioning supply hose trolley according to claim 1, characterized in that, The control system built into the control box is connected to the control circuit of the aircraft ground air conditioning unit. The control box is equipped with a touch screen, a working indicator light, and a reset button. The touch screen, the working indicator light, and the reset button are electrically connected to the control system.

8. The self-weight detection interlocking device for the aircraft ground air conditioning supply hose trolley according to claim 1, characterized in that, The trolley body is equipped with a connecting rod, and the bottom of the trolley body is equipped with several omnidirectional wheels. One end of the connecting rod is connected to the trolley body, and the other end of the connecting rod is connected to the boarding bridge.

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