Reel protection mechanism of airport air conditioner hose take-up and pay-off vehicle

Abstract

The utility model discloses a reel protection mechanism of an airport air conditioner hose winding and unwinding vehicle, and relates to the technical field of airport air conditioner hose winding and unwinding vehicles, the reel protection mechanism of the airport air conditioner hose winding and unwinding vehicle comprises a speed measuring gear and a rotating speed sensor which are integrally arranged on a vehicle body, and the rotating speed sensor is fixedly installed by facing teeth of the speed measuring gear through a support; a speed measuring gear wheel speed signal detected by the rotating speed sensor is transmitted to the programmable controller, the output end of the programmable controller is connected with the input end of the safety relay, the output end of the safety relay is connected with the input end of the contactor, and the output end of the contactor is connected with the input end of the motor power source. And the programmable controller controls the winding motor to start and stop through on-off of a motor power supply. The speed measuring gear and the rotating speed sensor are arranged to monitor the rotating speed condition of the winding disc, when it is monitored that the rotating speed is lower than a set threshold value, jamming is judged, a motor power source is cut off, it is ensured that the winding motor is reliably shut down when a fault occurs, and protection on the winding motor is achieved.

Description

Technical Field

[0001] This utility model relates to the field of airport air conditioning hose reel technology, specifically to an airport air conditioning hose reel protection mechanism. Background Technology

[0002] When aircraft are parked at an airport, they typically require air conditioning from the air conditioning system to supply air to the aircraft and meet cabin air conditioning requirements. The air supply duct is a flexible hose, which needs to be laid from the air conditioning outlet to the cabin air inlet before air supply. After air supply is completed, it is rolled up and stored in a designated location or warehouse. Due to the large air volume, large duct diameter, and large weight per unit length, airport air conditioning hose reel trucks are usually used for electrically laid and rolled up the hoses.

[0003] When winding the hose, there may be a problem where the hose gets stuck. Direct winding can easily cause the motor to overload due to the large resistance. Therefore, it is necessary to stop the machine for protection when a winding failure occurs, so that on-site personnel can come and check the situation.

[0004] To address the above issues, a mechanism for protecting the reel of an airport air conditioning hose reel is needed. Utility Model Content

[0005] The purpose of this utility model is to provide a reel protection mechanism for airport air conditioning hose reel trucks, which solves the problem of needing to stop the machine for protection when the airport air conditioning hose reel truck experiences a hose reel jamming failure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reel protection mechanism for an airport air conditioning hose take-up and take-down vehicle, comprising a speed measuring gear and a speed sensor integrated on the vehicle body. The speed measuring gear is fixedly mounted on a connecting shaft on one side of the take-up reel, and a driven gear of a belt gear transmission mechanism is fixedly mounted on the connecting shaft on the other side of the take-up reel. The driving gear of the belt gear transmission mechanism is connected to the output shaft of the take-up motor. The take-up motor is powered by a motor power supply to drive the belt gear transmission mechanism to rotate. The speed sensor is fixedly mounted on a bracket facing the teeth of the speed measuring gear.

[0007] The speed sensor detects the speed signal of the speed measuring gear and sends it to the programmable controller. The output of the programmable controller is connected to the input of the safety relay. The output of the safety relay is connected to the input of the contactor. The output of the contactor is connected to the input of the motor power supply. The programmable controller controls the start and stop of the winding motor by switching the motor power supply on and off.

[0008] Preferably, the winding reel is fixed to the upright beam of the vehicle body, and the bracket is fixed to the upright beam.

[0009] Preferably, the input terminal of the programmable controller is connected to the output terminal of the remote module, and the input terminal of the remote module is connected to the output terminal of the emergency stop button.

[0010] Preferably, the output terminal of the programmable controller is connected to the input terminal of the audible and visual alarm.

[0011] Preferably, the audible and visual alarm is integrated into the vehicle body.

[0012] This utility model has the following beneficial effects:

[0013] This invention monitors the rotation speed of the winding reel during winding by setting a speed measuring gear and a speed sensor. When the detected speed is lower than the set threshold, it is judged as jammed, and the motor power is cut off to ensure reliable shutdown in case of failure, thereby protecting the winding motor and facilitating on-site personnel to check the situation. Attached Figure Description

[0014] Figure 1 This is a front view of the present utility model;

[0015] Figure 2 This is a perspective view of the present invention;

[0016] Figure 3 This is a two-dimensional view of the present invention.

[0017] Figure 4 This is a system block diagram of the present invention.

[0018] In the diagram: 1. Vehicle body; 101. Vertical beam; 2. Speed ​​measuring gear; 3. Speed ​​sensor; 4. Rewind reel; 5. Connecting shaft; 6. Belt and gear transmission mechanism; 601. Driven gear; 602. Driving gear; 7. Rewind motor; 8. Motor power supply; 9. Bracket; 10. Programmable controller; 11. Safety relay; 12. Contactor; 13. Remote module; 14. Emergency stop button; 15. Audible and visual alarm. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-4As shown, this utility model provides a technical solution: a protection mechanism for the reel of an airport air conditioning hose take-up and take-down vehicle, including a speed measuring gear 2 and a speed sensor 3 integrated on the vehicle body 1. The speed measuring gear 2 is fixedly installed on a connecting shaft 5 on one side of the take-up reel 4, and the driven gear 601 of the belt gear transmission mechanism 6 is fixedly installed on the connecting shaft 5 on the other side of the take-up reel 4. The driving gear 602 of the belt gear transmission mechanism 6 is connected to the output shaft of the take-up motor 7.

[0021] The take-up reel 4 is fixed on the upright beam 101 of the car body 1. The take-up motor 7 is powered by the motor power supply 8 and drives the belt gear transmission mechanism 6 to rotate. The speed sensor 3 is fixedly installed on the teeth of the speed measuring gear 2 through the bracket 9. The gap between the speed sensor 3 and the teeth of the speed measuring gear 2 is ensured, and the tooth tip is aligned with the center line of the speed sensor 3. The bracket 9 is fixed on the upright beam 101. The speed sensor 3 installed on the bracket 9 observes a stable signal. The speed sensor 3 and the speed measuring gear 2 form a sensing system. A pulse is generated for each tooth detected, which can monitor the take-up speed in real time. The speed sensor 3 needs to be checked regularly for its fixed status and signal quality to ensure long-term stable operation of the system.

[0022] The speed sensor 3 detects the wheel speed signal of the speed measuring gear 2 and sends it to the programmable controller 10. The output terminal of the programmable controller 10 is connected to the input terminal of the safety relay 11. The output terminal of the safety relay 11 is connected to the input terminal of the contactor 12. The output terminal of the contactor 12 is connected to the input terminal of the motor power supply 8. The programmable controller 10 controls the start and stop of the winding motor 7 by switching the motor power supply 8 on and off. The output terminal of the programmable controller 10 is connected to the input terminal of the audible and visual alarm 15. When the winding is stuck, the programmable controller 10 controls the audible and visual alarm 15 to sound an alarm. The audible and visual alarm 15 is integrated on the vehicle body 1, so the alarm location can be determined.

[0023] The input terminal of the programmable controller 10 is connected to the output terminal of the remote module 13, and the input terminal of the remote module 13 is connected to the output terminal of the emergency stop button 14, which enables remote control of the winding stop.

[0024] The motor power supply 8, programmable controller 10, and safety relay 11 can be integrated and installed at the bottom of the vehicle body 1, saving space;

[0025] During the winding process, the speed measuring gear 2 rotates along with the winding reel 4. When the speed sensor 3 detects an abnormality in the speed of the winding reel 4, i.e., when the speed is lower than the set threshold, it is determined to be stuck. The programmable controller 10 cuts off the motor power supply 8 through the safety relay 11 and contactor 12 to ensure that the winding motor 7 can be reliably stopped in case of a fault, thereby protecting the winding motor 7. This facilitates on-site personnel to check the situation. Alternatively, on-site personnel can remotely control the winding motor 7 to stop in advance by using the emergency stop button 14 if they discover a possible winding fault. After the motor stops, the audible and visual alarm 15 will issue an alarm signal.

[0026] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airport air conditioning hose retraction vehicle reel protection mechanism, characterized by: The application relates to a speed measuring device for a vehicle, which comprises a speed measuring gear (2) and a rotating speed sensor (3) integrated on a vehicle body (1), the speed measuring gear (2) is fixedly installed on a connecting shaft (5) on one side of a winding disc (4), a driven gear (601) of a belt gear drive mechanism (6) is fixedly installed on the connecting shaft (5) on the other side of the winding disc (4), a driving gear (602) of the belt gear drive mechanism (6) is connected on an output shaft of a winding motor (7), the winding motor (7) is driven to rotate the belt gear drive mechanism (6) by a motor power supply (8), and the rotating speed sensor (3) is fixedly installed on the teeth of the speed measuring gear (2) through a support (9). The rotating speed signal of the speed measuring gear (2) detected by the rotating speed sensor (3) is transmitted to a programmable controller (10), the output end of the programmable controller (10) is connected with the input end of a safety relay (11), the output end of the safety relay (11) is connected with the input end of a contactor (12), the output end of the contactor (12) is connected with the input end of the motor power supply (8), and the programmable controller (10) controls the start and stop of the winding motor (7) through the motor power supply (8).

2. An airport air conditioning hose retraction vehicle reel protection mechanism according to claim 1, characterised in that: The winding disc (4) is fixed on a vertical beam (101) of the vehicle body (1), and the support (9) is fixed on the vertical beam (101).

3. An airport air conditioning hose retraction vehicle reel protection mechanism according to claim 1, characterized in that: The input end of the programmable controller (10) is connected with the output end of a remote module (13), and the input end of the remote module (13) is connected with the output end of an emergency stop button (14).

4. An airport air conditioning hose retraction vehicle reel protection mechanism according to claim 1, characterized in that: The output end of the programmable controller (10) is connected with the input end of an audible and light alarm (15).

5. An airport air conditioning hose retraction vehicle reel protection mechanism according to claim 4, characterised in that: The audible and light alarm (15) is integrated on the vehicle body (1).

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