Novel control mechanism of luggage conveying turntable

Abstract

The utility model relates to a control mechanism of a novel luggage conveying turntable. The control mechanism comprises a control box for controlling a conveying belt and equipment buttons for controlling the conveying belt to work, the time relay is connected with the equipment stop button; the photoelectric switch is connected with the time relay; the turntable supplies power to the time relay and the photoelectric switch by using an auxiliary contact of an original alternating-current contactor; when the conveyor belt stops, the original alternating current contactor loses power and trips, and the time relay and the optoelectronic switch are powered off synchronously. According to the novel luggage conveying rotary table, a simple photoelectric sensor combination mode is adopted, it is guaranteed that whether luggage exists or not is accurately judged, intelligent automatic stop control over the luggage rotary table is achieved in a relatively simple and low-cost mode, and the practicability is high; the long-time idling phenomenon is avoided; in the actual application of multiple flights, the automatic shutdown success rate reaches 100%, and the problems that manpower is wasted due to manual shutdown and energy is wasted due to the fact that shutdown is not timely in the past are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to aviation consign technology field, concretely relates to a transmission mechanism of to the port luggage, especially relates to a control mechanism suitable for to the post luggage conveying turntable of Tonghua airport. BACKGROUND

[0002] At present, in Tonghua airport, when luggage enters the port, the luggage turntable needs ground service personnel to manually open after loading the luggage, and the staff closes again after the passenger takes the luggage, so the work efficiency is low. Even because of closing not in time, it leads to equipment continues empty running, equipment running time increases, causes equipment wear and tear, causes energy waste. Based on this, it is urgent to develop a new type of luggage conveying turntable to effectively solve the above problems. SUMMARY

[0003] The utility model discloses a luggage conveying turntable suitable for the luggage consignment of Tonghua airport, to solve the problem that the luggage conveying turntable stops running when the time relay does not receive the reset signal after detecting the luggage, effectively improve work efficiency, reduce energy consumption and equipment wear and tear, improve the energy saving of airport operation and the scientific nature of equipment management.

[0004] The utility model discloses a control mechanism of a new type of luggage conveying turntable, including the control box for controlling the conveying belt and the equipment button of controlling the work of transmission belt, still including two electrical components, respectively with the time relay of equipment stop button connection and with the photoelectric switch of time relay connection;

[0005] A control mechanism of a new type of luggage conveying turntable, including the control box for controlling the conveying belt and the equipment button of controlling the work of transmission belt, still including two electrical components, respectively with the time relay of equipment stop button connection and with the photoelectric switch of time relay connection;

[0006] Among them, the photoelectric switch is photoelectric sensor, installs on the luggage turntable, is used to detect whether there is luggage on the turntable, the time relay is installed in the control box near the turntable, and the time relay is connected with the photoelectric sensor and motor control circuit respectively, and the auxiliary contact of the motor AC contactor is connected with the time relay and photoelectric switch in series, and the auxiliary contact of the motor AC contactor is used as the power supply of the time relay and photoelectric switch, after the conveying belt stops, the AC contactor loses power and releases, and the time relay and photoelectric switch are powered off synchronously;

[0007] The photoelectric sensor has 4 lines, wherein 2 lines are connected with the auxiliary contact of the AC contactor, and the other 2 lines are connected with the time relay 1 foot and 3 foot reset, the photoelectric switch, the time relay 2 foot and 7 foot are powered through the auxiliary contact, and the time relay 5 foot and 8 foot are connected in series between the stop button and PLC;

[0008] When luggage passes by, it blocks the light, and the photoelectric sensor can send a reset signal to the time relay controller to reset the countdown. After there is no luggage, the time relay delays to the set time, sends a stop signal, disconnects pins 5 and 8, and disconnects the stop button circuit.

[0009] Furthermore, the main control equipment for the conveyor belt is located inside the conveyor belt control box. The equipment buttons include start and stop buttons, which are connected to the PLC inside the control box.

[0010] Furthermore, the stop button is a normally closed button.

[0011] Furthermore, the time relay is an electronic time relay with a reset function.

[0012] Furthermore, the photoelectric sensor is arranged along the edge of the turntable and fixed to the luggage turntable by a bracket.

[0013] Furthermore, the photoelectric sensor is selected as a diffuse reflection type photoelectric sensor, whose detection distance can cover the cross-section of the turntable.

[0014] Furthermore, pins 2 and 7 of the time relay are power supplies, pins 1 and 3 are reset connections to the photoelectric switch, and pins 5 and 7 are connected to the stop button.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model relates to a novel baggage conveyor turntable. An external time relay and photoelectric switch are connected, with the time relay and photoelectric switch connected in series via the auxiliary contacts of the motor's AC contactor (i.e., the original AC contactor's auxiliary contacts power the time relay and photoelectric switch; when the conveyor belt stops, the original AC contactor de-energizes and trips, simultaneously de-energizing the time relay and photoelectric switch). The photoelectric switch detects whether there is baggage on the turntable. If there is baggage, it sends a reset signal to the time relay, which restarts the timing. When all baggage is removed from the turntable, the photoelectric switch detects no more baggage. After a set delay, the time relay activates the stop button, shutting down the device. This utility model achieves automatic shutdown without altering the original equipment's function, allowing the turntable to automatically stop working when there is no baggage. This improves work efficiency, reduces energy consumption, and extends the equipment's lifespan. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This utility model presents a schematic diagram of the connection of a novel luggage conveyor turntable control mechanism.

[0019] Figure 2 Working principle diagram of photoelectric switch;

[0020] Figure 3 Schematic diagram of photoelectric switch connection;

[0021] Figure 4 A schematic diagram of the operation of the novel luggage conveyor turntable of this utility model;

[0022] Figure 5 A schematic diagram showing the connection between the existing technology and the device stop button in this utility model. Detailed Implementation

[0023] The present invention will be further described below with reference to embodiments:

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figure 1 As shown, the novel baggage conveyor turntable control mechanism of this utility model includes a control box for controlling the conveyor belt and a device button for controlling the operation of the drive belt. It also includes two electrical components: a time relay connected to the device stop button and a photoelectric switch connected to the time relay.

[0027] The photoelectric switch is a photoelectric sensor that can send control signals to the time relay based on the passage of luggage.

[0028] The time relay is an automatic switching device with a delay control function. Some time relays have a set of reset function terminals. The reset function is activated when the time relay starts timing after being powered on. Connecting pins 3 and 1 (only a passive switch can be connected; power supply is strictly prohibited) will return the time relay's delay contact to its initial position, resetting the countdown to zero. This invention uses an electronic time relay with a reset function, which has a long service life and is safe and reliable. The time relay receives a signal from a photoelectric sensor (when luggage passes by) to reset the time relay's countdown. After no luggage is present, the time relay counts down to the set time and sends a stop signal.

[0029] like Figure 3 As shown, in this invention, a time relay and a photoelectric switch are connected in series via the auxiliary contacts of the motor's AC contactor; that is, the auxiliary contacts of the original AC contactor are used to power the time relay and the photoelectric switch. When the conveyor belt stops, the original AC contactor loses power and trips, and the time relay and photoelectric switch are simultaneously de-energized.

[0030] The main control equipment for the conveyor belt is located inside the conveyor belt control box. The equipment buttons include start and stop buttons, connected to the PLC inside the control box. The stop button is a normally closed button. In this invention, pins 5 and 8 of the time relay are energized and then disconnected after a delay, breaking the original stop button circuit. Pins 5 and 8 of the time relay are connected in series between the stop button and the PLC.

[0031] The photoelectric switch and time relay pins 2 and 7 are powered by auxiliary contacts. The reset function (pins 1 and 3 are reset by the photoelectric switch) is activated when there is no luggage on the conveyor belt. When the time relay delays for a set time, pins 5 and 8 are disconnected.

[0032] The photoelectric sensor is installed on the baggage carousel to detect whether there is baggage on the carousel. Specifically, without affecting the structural stability of the baggage carousel, the photoelectric sensor is arranged along the edge of the carousel and fixed to the baggage carousel by a bracket.

[0033] The time relay is installed in the control box near the turntable, ensuring that it is in a dry, ventilated and easy-to-maintain environment. The time relay is connected to the photoelectric sensor and the motor control circuit respectively.

[0034] In this utility model, pins 2 and 7 of the time relay are the power supply, pins 1 and 3 are the reset pins connected to the photoelectric switch, and pins 5 and 7 are connected to the stop button.

[0035] This invention utilizes the principle of a photoelectric sensor emitting and receiving reflected light. When luggage obstructs the light, the sensor signal changes, thus determining the presence or absence of luggage. In this invention, a diffuse reflection type photoelectric sensor is selected, whose detection distance can cover the cross-section of the carousel. It can accurately detect luggage of different colors and materials, and has good anti-interference capabilities, adapting to the complex lighting environment (such as strong light and changing light and shadow) and electromagnetic environment of airports.

[0036] The photoelectric sensor has four wires. Two wires are connected to the power supply (auxiliary contact), and the other two wires are connected to pins 1 and 3 of the time relay for reset (a reset signal is sent to the time relay when luggage is detected). If luggage is on the conveyor belt, a reset signal is sent to the time relay, and the time relay restarts its timing. When all luggage on the carousel is removed, the photoelectric sensor no longer detects luggage. After a set delay, the time relay activates the stop button to shut down the equipment.

[0037] This invention supplies power to a time relay and a photoelectric sensor via the auxiliary contacts of an existing AC power supply contactor. It can collect photoelectric sensor signals in real time and use them as a reset signal for the time relay; it can determine whether the no-baggage stopping condition is met according to pre-set control logic, and accurately time the duration of the no-baggage period through the time relay's timing function; when the stopping condition is met, it can output a valid stop command to the motor control circuit.

[0038] In this utility model, the baggage conveyor turntable, the control box for controlling the conveyor belt, and the buttons for controlling the operation of the transmission belt are all existing technologies. Their composition, structure, and connection relationship are not described in detail here and are not the technical content protected by this utility model.

[0039] Debugging Process: After installation, standalone debugging was first conducted to simulate different baggage placement scenarios on the carousel, including a no-baggage state. The detection performance of the photoelectric sensors and the control execution of the time relays were observed. Issues such as inaccurate sensor signals and inappropriate stop timing were addressed by adjusting the sensor installation angle and optimizing the delay time. Subsequently, online debugging was performed. In conjunction with the airport's existing baggage handling system, the compatibility and collaborative working capabilities of the entire upgraded system with the original system were tested under actual baggage handling conditions, ensuring normal baggage handling and proper operation of the automatic stop function.

[0040] like Figure 4As shown, this utility model's baggage carousel takes 55 seconds to complete one rotation. If the installed photoelectric sensor does not detect any baggage within the set time interval of 55 seconds, it determines that there is currently no baggage on the carousel. The time relay then sends a stop signal to the carousel's motor control circuit, causing the motor to stop rotating. Simultaneously, considering potential misjudgments such as adding baggage or brief sensor malfunctions, a corresponding error correction mechanism is implemented. When the sensor signal fluctuates abnormally or triggers repeatedly within a short period, the stop operation is not executed immediately; instead, a signal delay verification is performed (the delay is changed to 165 seconds, during which the carousel rotates 3 times), ensuring the accuracy of the stop operation. If baggage passes by within the set time, the time relay resets the timer. After all baggage has been removed (165 seconds), the normally closed contact of the time relay becomes a normally open contact, equivalent to pressing a stop button, and the baggage carousel closes. This improves work efficiency, reduces equipment energy consumption, and extends the equipment's lifespan.

[0041] By adopting this new baggage carousel, 55.8 hours of labor can be saved annually, and the time required for manual closing per flight can be reduced by one (3 minutes * 1116 landing flights = 55.8 hours). 139.5 kWh of electricity can be saved annually (5 minutes earlier closing time per flight * 1116 landing flights * 1.5 kW motor power = 139.5 kWh). The equipment's operating time is reduced by 93 hours annually (reducing equipment wear and tear).

[0042] This invention employs a simple photoelectric sensor combination to ensure accurate detection of baggage presence, achieving intelligent automatic shutdown control of the baggage carousel in a relatively simple and low-cost manner, making it highly practical. After repeated testing and optimization, the improved baggage carousel can accurately detect the presence of baggage on the carousel and reliably stop automatically after 165 seconds without baggage, avoiding prolonged idle operation. In actual application on multiple flights, the automatic shutdown success rate reached 100%, effectively solving the problems of wasted manpower and energy waste caused by untimely manual shutdown.

[0043] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A control mechanism for a new type of luggage carousel, comprising a control box for controlling the carousel and a device button for controlling the operation of the carousel, characterised in that: Two electrical components are also included, namely a time relay connected with the device stop button and a photoelectric switch connected with the time relay; The photoelectric switch is a photoelectric sensor installed on the luggage carousel for detecting whether there is luggage on the carousel; the time relay is installed in the control box near the carousel, and the time relay is connected with the photoelectric sensor and the motor control circuit respectively; the auxiliary contact of the AC contactor is connected in series with the time relay and the photoelectric switch to supply power to the time relay and the photoelectric switch; after the conveyor belt stops, the AC contactor loses power and is tripped, and the time relay and the photoelectric switch are powered off synchronously; The photoelectric sensor has four wires, two of which are connected with the auxiliary contact of the AC contactor, and the other two are connected with the 1st and 3rd pins of the time relay; the photoelectric switch, the 2nd and 7th pins of the time relay are powered through the auxiliary contact; the 5th and 8th pins of the time relay are connected in series between the stop button and the PLC; When there is luggage, the luggage blocks the light, and the photoelectric sensor can send a reset signal to the time relay controller to reset the countdown; after there is no luggage, the time relay delays to the set time, sends a stop signal, disconnects the 5th and 8th pins, and disconnects the stop button circuit.

2. A control mechanism for a novel luggage carousel as claimed in claim 1, wherein: The conveyor belt control device is mainly arranged in the conveyor belt control box, and the device buttons include a start button and a stop button connected with the PLC in the control box.

3. A control mechanism for a novel luggage carousel as claimed in claim 2, wherein: The stop button is a normally closed button.

4. The control mechanism of a new type of luggage transfer carousel according to claim 1, characterized in that: The time relay is an electronic time relay with a reset function.

5. The control mechanism of a new type of luggage transfer carousel according to claim 1, characterized in that: The photoelectric sensor is arranged along the edge of the carousel and is fixed to the luggage carousel through a bracket.

6. A control mechanism for a novel luggage carousel as claimed in claim 1, characterized in that: The photoelectric sensor is a diffuse reflection type photoelectric sensor, and its detection distance can cover the cross section of the carousel.

7. The control mechanism of a new type of luggage transfer carousel according to claim 1, characterized in that: The 2nd and 7th pins of the time relay are power supply, the 1st and 3rd pins are reset connected with the photoelectric switch, and the 5th and 7th pins are connected with the stop button.

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