Non-contact anti-shaking rod falling alarm device

Abstract

The utility model relates to the technical field of electrical control, and discloses a non-contact anti-shaking rod falling alarm device, which is applied to an airplane power van draw bar and comprises a limit switch, an alarm device and a power supply device which are connected in series. The limiting switch is triggered to be closed when the airplane power van draw bar falls off, so that the power supply device and the alarm device are connected, and the limiting switch is an inductance type proximity switch. The inductive proximity switch sets a signal and a control circuit for early warning, so that the alarm detection of the traction rod of the power van of the airplane is more reliable, the response speed is higher, physical contact impact is avoided, and the service life of the device is greatly prolonged; distance adjustment can be performed according to different use conditions, so that detection is more accurate, and non-alarm and false alarm are prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical control, in particular to a non-contact anti-shaking pole-falling alarm device. BACKGROUND

[0002] In major airports, the towed aircraft ground static power supply is moved by a towing vehicle, and the towing rod has a risk of falling off. Falling off may cause serious accidents, so the user needs to be reminded of the alarm when the rod falls off.

[0003] However, in the related art, the towing rod alarm has the problems of slow response, inconvenient use and short service life of the device. CONTENT OF THE UTILITY MODEL

[0004] To solve the above problems, the present application provides a non-contact anti-shaking pole-falling alarm device to solve the problems in the related art.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] The utility model discloses the following technical scheme:

[0007] The present application provides a non-contact anti-shaking pole-falling alarm device, which is applied to an aircraft power supply vehicle towing rod, comprising: a limit switch, an alarm device and a power supply device, wherein:

[0008] The limit switch, the alarm device and the power supply device are connected in series;

[0009] The limit switch triggers the limit switch to close when the aircraft power supply vehicle towing rod falls off, so as to connect the power storage device and the alarm device, and the limit switch is an inductive proximity switch.

[0010] In some embodiments, the aircraft power supply vehicle towing rod is provided with a metal baffle, and when the aircraft power supply vehicle towing rod falls off, the metal baffle moves along the aircraft power supply vehicle towing rod to approach the limit switch to trigger the alarm device.

[0011] In some embodiments, the proximity switch includes an NPN type proximity switch sensor.

[0012] In some embodiments, the proximity switch includes a PNP type proximity switch sensor.

[0013] In some embodiments, the circuit further comprises a self-resetting unlocking device connected to the limit switch.

[0014] In some embodiments, the self-resetting unlocking device is connected to the alarm device.

[0015] In some embodiments, the alarm device comprises a buzzer.

[0016] In some embodiments, the alarm device further comprises an indicator light.

[0017] In some embodiments, the indicator light comprises an indicator light showing the working state of the limit switch.

[0018] In some embodiments, the power supply device selects a 24V lead-acid battery.

[0019] Compared with the prior art, one or more embodiments of the above scheme can have the following advantages or beneficial effects:

[0020] In the non-contact anti-shaking rod falling alarm device provided in the application, the inductive proximity switch is arranged in a series circuit for early warning, so that the alarm detection for the aircraft power car traction rod is more reliable and faster in response, physical contact impact is avoided, and the service life of the device is greatly prolonged; the distance can be adjusted according to different use conditions, so that the detection is more accurate and false alarms are prevented.

[0021] By arranging the buzzer, the indicator light and the indicator light showing the working state of the limit switch, the reminding effect required by the alarm can be met respectively, so as to better prompt the corresponding staff in different occasions and environmental conditions.

[0022] By arranging the self-resetting unlocking device to access the limit switch and the alarm device, the situation of false alarm can be effectively prevented.

[0023] The 24V lead-acid battery is selected as the power supply device, which is stable and safe in power supply, small in size and meets the airport environment, and can continuously supply power to the alarm device when the limit switch is triggered. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 A non-contact anti-shaking rod falling alarm device principle structure schematic view is provided for the embodiments of the application.

[0026] Figure 2 A non-contact anti-shaking rod falling alarm device connection relationship structure schematic view is provided for the embodiments of the application.

[0027] Figure 3The utility model provides a non -contact type anti -shaking pole falling alarm device working process schematic drawing for the embodiment of the utility model,

[0028] Figure 4 The utility model provides a kind of exemplary NPN type proximity switch sensor structure schematic drawing for the embodiment of the utility model,

[0029] Figure 5 The utility model provides a kind of exemplary PNP type proximity switch sensor structure schematic drawing for the embodiment of the utility model,

[0030] Figure 6 The utility model provides a kind of exemplary aircraft power car drawbar and limit switch cooperation structure relationship schematic drawing for the embodiment of the utility model.

[0031] Reference signs:

[0032] 1, aircraft power car drawbar;11, metal baffle;2, limit switch. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] In the present application, considering that the "pole falling alarm" function is realized by mechanical limit switch, buzzer, indicator light and lead-acid battery direct connection, when the power car drawbar is dropped, it makes the limit switch of rotating shaft position physical displacement, switch closing, buzzer and indicator light conduction start alarm.

[0035] But there is a dependence on the physical contact of drawbar to limit switch, so it will cause alarm trigger instability. The impact of drawbar to limit switch will also greatly shorten the service life of the device. Since the electrical direct connection is used, the alarm state can only be released when the drawbar is lifted, which is not convenient for actual use, and there is the problem of short service life of the device.

[0036] As Figure 1 And Figure 2 As shown in the schematic diagram of the principle structure of the non-contact anti-shaking pole falling alarm device and the connection relationship structure of the non-contact anti-shaking pole falling alarm device provided by the embodiment of the present application.

[0037] Figure 2 In the present application, a non-contact anti-shaking pole falling alarm device is applied to aircraft power car drawbar, comprising: limit switch, alarm device and power supply device, wherein:

[0038] The limit switch, the alarm device and the power supply device are connected in series;

[0039] The limit switch is triggered when the towing rod of the aircraft power supply vehicle is dropped, so as to connect the power supply device and the alarm device, and the limit switch is an inductive proximity switch.

[0040] In the embodiment of the application, the alarm detection adopts an inductive proximity switch instead of a mechanical limit switch, the proximity switch is a three-wire DC inductive proximity switch, has a sensor inside, detects the distance of a metal object by using electromagnetic induction principle, and the inductive proximity switch and related trigger detection alarm detection avoid the physical direct contact control for early warning and physical contact impact, and the service life of the device is greatly prolonged.

[0041] In order to better remind the staff, in some embodiments, the alarm device comprises a buzzer, and the alarm device further comprises an indicator lamp.

[0042] Through different settings of the alarm device, the indicator lamp can be used for early warning at night in the airport, the buzzer can better remind the staff, the buzzer is preferably a piezoelectric active buzzer, the advantages of electromagnetic type and piezoelectric type can be considered, the buzzer meets the required decibel of the alarm, and meanwhile, the buzzer is small in size, light in weight and low in power consumption.

[0043] In some embodiments, in order to better determine the problem of the towing rod of the aircraft power supply vehicle, the indicator lamp comprises an indicator lamp for displaying the working state of the limit switch, and the working state of the limit switch is displayed to better remind the staff to deal with the current abnormal situation.

[0044] In order to ensure safety, in some embodiments, the power supply device selects a 24V lead-acid storage battery, the lead-acid storage battery is more stable and safe in power supply than other types of batteries, is small in size, and is more suitable for the airport environment.

[0045] In some embodiments, the proximity switch comprises an NPN type proximity switch sensor.

[0046] In the embodiment of the application, please refer to Figure 4 , Figure 4 An exemplary NPN type proximity switch sensor structure schematic diagram is provided in the embodiment of the utility model.

[0047] In the drawing, the NPN type proximity switch sensor, when the proximity switch detects that an object approaches, a low-level switch quantity signal is generated at the output end thereof, and a load is connected between the positive electrode of the power supply and the output electrode.

[0048] In some embodiments, the proximity switch comprises a PNP type proximity switch sensor.

[0049] Please refer to Figure 5The embodiment provides an example PNP type proximity switch sensor structure schematic diagram.

[0050] In the embodiment of the application, the PNP type proximity switch generates a high level signal at the output end, and a load is connected between the output end and the negative pole of the power supply.

[0051] In the application, considering that the NPN type proximity switch has stronger driving load capacity because the output end is connected to the positive pole of the power supply, and the NPN type proximity switch has stronger anti-interference capacity because the NPN type proximity switch outputs a low level signal, the NPN type proximity switch sensor is preferred in the application.

[0052] The non-contact anti-shaking dropped rod alarm device further comprises a self-resetting unlocking device, and the self-resetting unlocking device is connected with the limit switch.

[0053] The self-resetting unlocking device is connected with the alarm device.

[0054] In the embodiment of the application, the self-resetting unlocking device can control false alarms or stop alarms by controlling the limit switch and the alarm device.

[0055] The self-resetting unlocking device is connected with the alarm device. Figure 3 , Figure 3 The application provides a non-contact anti-shaking dropped rod alarm device working process schematic diagram.

[0056] The proximity switch can be provided with a control panel, if a rod is not dropped, the proximity switch only outputs a high level, triggers the control panel to not output, and the circuit does not alarm; if a rod is dropped, the proximity switch outputs a low level, and the trigger control panel receives a falling edge signal of the proximity switch from a high level to a low level, closes an output switch, and the circuit starts to alarm; if the traction rod is lifted, the proximity switch generates a rising edge signal from a low level to a high level, and then continuously outputs a high level; at this time, the trigger control panel disconnects the circuit, and the buzzer stops alarming; if the self-resetting unlocking button is pressed, an edge signal is also generated and input to the trigger control panel; at this time, even if the traction rod is still in a dropped state, the control panel stops outputting, and the buzzer stops alarming.

[0057] Meanwhile, in order to eliminate the influence of the shaking of the dropped rod, the trigger control panel processes the signal input by the proximity switch in a certain delay, filtering, isolation and the like.

[0058] In order to prevent the circuit from being frequently turned on and off, and to alarm intermittently, the trigger latch is used in the internal circuit of the control panel; when the trigger control panel outputs to close the circuit, if the external state does not change (the unlocking button is pressed or the traction rod is lifted), the output remains in the previous state, and the buzzer continuously alarms.

[0059] The non-contact anti-shaking dropped rod alarm device comprises a 24V lead-acid storage battery, an unlocking button, a proximity switch, a trigger control panel and a piezoelectric active buzzer.

[0060] Wherein, the lead-acid battery provides 24V DC required by the circuit, the self-resetting unlocking device can unlock and reset the alarm; the inductive proximity switch detects the drop lever action and converts it into switch output; the control board in the trigger proximity switch integrates various logic devices, completes series signal processing and logic control, and the buzzer is the main alarm device.

[0061] Please refer to Figure 6 , Figure 6 An exemplary structural relationship diagram of the aircraft power car towing rod cooperating with the limit switch is provided for the embodiments of the present application.

[0062] Figure 6 In the embodiment, the aircraft power car towing rod 1 is provided with a metal baffle 11, which can be specifically arranged near the position where the aircraft power car towing rod 1 is rotationally connected. When the aircraft power car towing rod 1 falls off, the metal baffle 11 moves close to the limit switch 2 along the aircraft power car towing rod 11 to trigger the alarm device to operate.

[0063] It should be noted that the alarm device and the power supply device can be electrically connected with the limit switch 2. After the limit switch 2 is triggered by the aircraft power car towing rod 1, the signal is transmitted to the corresponding position of the staff through the alarm device to complete the early warning. At the same time, the proximity limit switch 2 can move left and right to adjust the triggering distance to meet different use requirements.

[0064] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, and any modification and replacement based on the technical solutions and the inventive concept provided by the present application should be covered in the protection scope of the present application. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the present application omits the description of known components and processing technologies and processes to avoid unnecessary limitation of the present application.

[0065] Other embodiments of the present application will be readily apparent to those skilled in the art upon considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application following, in general, the principles of the present application and including such variations, uses, or adaptations of the present application as come within the general scope of the present application. It should be understood that the present application is not limited to the precise structures and methods described herein and as shown in the drawings, and that various modifications and changes can be made without departing from the scope of the present application. The scope of the present application is limited only by the claims appended hereto.

Claims

1. A non-contact anti-shaking pole-falling alarm device, characterized in that, The application is applied to the aircraft power car traction rod, comprising: limit switch, alarm device and power supply device, wherein: The limit switch, alarm device and power supply device are connected in series. The limit switch triggers the limit switch to close when the aircraft power car traction rod is off, so as to connect the power supply device and the alarm device, and the limit switch is an inductive proximity switch.

2. A non-contact anti-shaking falling rod alarm device according to claim 1, characterized in that, The aircraft power car traction rod is provided with a metal baffle, and when the aircraft power car traction rod is off, the metal baffle moves along the aircraft power car traction rod to approach the limit switch to trigger the alarm device.

3. The non-contact anti-shaking falling rod alarm device according to claim 1, characterized in that, The proximity switch comprises an NPN type proximity switch sensor.

4. The non-contact anti-shaking falling rod alarm device according to claim 1, characterized in that, The proximity switch comprises a PNP type proximity switch sensor.

5. A non-contact anti-shaking falling rod alarm device according to claim 3, characterized in that, The device further comprises a self-resetting unlocking device connected to the limit switch.

6. A non-contact anti-shaking falling rod alarm device according to claim 5, characterized in that, The self-resetting unlocking device is connected to the alarm device.

7. The non-contact anti-shaking falling rod alarm device according to claim 1, characterized in that, The alarm device comprises a buzzer.

8. A non-contact anti-shaking falling rod alarm device according to claim 7, characterized in that, The alarm device further comprises an indicator light.

9. A non-contact anti-shaking falling rod alarm device according to claim 8, characterized in that, The indicator light comprises an indicator light for displaying the working state of the limit switch.

10. The non-contact anti-shaking drop rod alarm device according to claim 1, characterized in that, The power supply device selects a 24V lead-acid storage battery.

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