CN-224226415-U - Timing automatic maintenance device for elevator emergency power supply

CN224226415UCN 224226415 UCN224226415 UCN 224226415UCN-224226415-U

Abstract

The utility model provides an elevator emergency power supply timing automatic maintenance device which comprises a maintenance control module, a person-existence detection sensor and a power-off time preset module, wherein the person-existence detection sensor is connected with the maintenance control module, the person-existence detection sensor comprises an ultrasonic obstacle avoidance sensor which is arranged at the ceiling of an elevator car and is used for detecting whether the elevator car is in a person or not, the maintenance control module comprises a timing maintenance contactor KM, a miniature relay KA1 and a control circuit containing the miniature relay KA2 which are used for testing an emergency leveling device, and when the maintenance timing time stored in the power-off time preset module is up and the ultrasonic obstacle avoidance sensor detects that no person exists in the elevator car, the maintenance control module cuts off the mains supply of the elevator through a machine room main power switch so as to start the emergency power supply of the elevator, and simultaneously controls the internal wiring of an elevator car operating panel so as to enable the elevator car to move to a preset floor for maintenance operation.

Inventors

Sheng Yaomin
WENG XIAODONG

Assignees

福州金三洋电梯工程有限公司

Dates

Publication Date: 20260512
Application Date: 20250507

Claims (10)

1. The automatic maintenance device for the elevator emergency power supply timing is characterized by comprising a maintenance control module, a person-existence detection sensor and a power-off time preset module, wherein the person-existence detection sensor is connected with the maintenance control module, the person-existence detection sensor comprises an ultrasonic obstacle avoidance sensor which is arranged at the ceiling of an elevator car and is used for detecting whether the elevator car is someone or not, the maintenance control module comprises a timing maintenance contactor KM, a miniature relay KA1 and a control circuit containing the miniature relay KA2, the timing maintenance contactor KM, the miniature relay KA1 and the control circuit are used for testing an emergency leveling device, and when the maintenance timing time stored in the power-off time preset module is up, and the ultrasonic obstacle avoidance sensor detects that no person exists in the elevator car, the maintenance control module cuts off the mains supply of the elevator through a machine room main power switch so as to start the emergency power supply of the elevator, and simultaneously controls the internal wiring of an elevator car operating panel so as to enable the elevator car to move to a preset floor for maintenance operation.
2. The elevator emergency power supply timing automatic maintenance device according to claim 1, wherein the power-off time preset module adopts STM32F103C8T6 as an MCU, uses a real-time clock RTC inside the MCU to set years, months, days, hours, minutes and seconds of preset time and displays the settings on an LCD connected with the MCU, uses a small relay KA1 connected with the outside to perform mode switching, sets the mode switching in the idle time of the elevator, and divides the mode into a normal operation mode and a timing maintenance mode; The power-off time preset module MCU level signal passes through the photoelectric coupler to enable the miniature relay KA1 to be electrified.
3. The elevator emergency power supply timing automatic maintenance device according to claim 1, wherein the maintenance control module simulates a power-off scene when the maintenance timing time is up, when the main control chip 32 outputs a high level by the foot PA11, the miniature relay KA1 is electrified through the photoelectric coupler to be matched with the timing maintenance contactor KM to automatically trigger to cut off the mains supply, so that the emergency power supply is started, and the highest-layer button in the elevator car and the miniature relay KA2 are linked to perform automatic operation.
4. The elevator emergency power supply timing automatic maintenance device according to claim 1, wherein when the maintenance timing time stored in the power-off time preset module is up, and the ultrasonic obstacle avoidance sensor detects no person in the elevator car, the power-off time preset module level signal enables the miniature relay KA1 to be electrified, and the automatic triggering action of the timing maintenance contactor KM is matched, the mains supply of the elevator is cut off through a machine room main power switch to enable the emergency power supply of the elevator to be started, and meanwhile, the miniature relay KA2 controls the internal wiring of an elevator car control panel to enable the elevator car to move to a preset floor for maintenance operation.
5. The elevator emergency power supply timing automatic maintenance device according to claim 4, wherein the power-off time preset module cuts off the mains supply of the elevator through a machine room main power switch to enable the emergency power supply of the elevator to be started, and the miniature relay KA2 controls the internal wiring of the elevator car operating panel to enable the elevator car to move to a preset floor for maintenance operation, namely, simulates layer key triggering of the elevator car operating panel by shorting the internal wiring contact of the elevator car operating panel.
6. The automatic timing maintenance device for the emergency power supply of the elevator, according to claim 1, is characterized in that the emergency leveling device is an elevator power-off leveling device with an embedded emergency power supply, and the emergency power supply takes a plurality of groups of lead storage batteries as power storage devices; the automatic maintenance device also comprises a storage battery parameter acquisition module for acquiring the voltage, the temperature and the total charge-discharge current of each unit of the lead storage battery of the emergency power supply.
7. The apparatus of claim 6, wherein the battery parameter collection module collects the voltages of the units of the lead-acid battery of the emergency power supply through a voltage collection circuit comprising a resistor voltage division circuit and an LTC248 multiplexing chip.
8. The elevator emergency power supply timing automatic maintenance device according to claim 6, wherein the battery parameter acquisition module acquires the temperatures of all units of the emergency power supply lead battery through a unit temperature acquisition board attached to the surface of the battery, and a temperature sensor LM35 is arranged at the unit temperature acquisition board.
9. The apparatus of claim 6, wherein the battery parameter acquisition module acquires the total current signal of the charging and discharging loop of the emergency power supply via a Hall effect current sensor ACS 758.
10. The apparatus of claim 6, wherein the emergency floor leveling device further comprises a network communication module for accessing an Internet of things platform.

Description

Timing automatic maintenance device for elevator emergency power supply Technical Field The utility model relates to the technical field of elevator operation and maintenance, in particular to an automatic timing maintenance device for an elevator emergency power supply. Background At present, an elevator power failure emergency power supply is arranged on an elevator, so that when a power grid fails, the emergency power supply is automatically put into operation, and three-phase emergency power supply is provided for an elevator control system, so that an elevator car slowly runs to a flat floor position and a door is opened to release passengers. The elevator outage and leveling device functions by means of an emergency power source (such as a storage battery), but long-term non-use or non-timed maintenance may cause battery aging or failure. Because the maintenance of the storage battery depends on manual operation, the risks of detection omission, insufficient detection frequency or irregular operation exist, an automatic test means is lacking, and the emergency power supply can not be ensured to be in a usable state all the time. The elevator emergency power supply timing automatic maintenance device provided by the utility model can simulate power grid power failure when an elevator is in an idle state and is not in a car, so that the emergency power supply is put into use and is in a charging and discharging state, the highest floor operation can be automatically selected, various parameters of an emergency power supply storage battery, such as the voltage of each unit storage battery, the surface temperature of the storage battery, the total current of a storage battery charging and discharging circuit, the maintenance time and the maintenance frequency, information acquisition of maintenance states, operation faults and the like, are transmitted to an Internet of things platform through a network communication module, maintenance personnel can monitor the use real-time condition of the emergency power supply on a mobile phone or a computer, know various parameters of the storage battery, and can timely replace the storage battery if the storage battery has a problem. Disclosure of utility model The utility model provides an elevator emergency power supply timing automatic maintenance device which can perform timing automatic maintenance on an elevator emergency power supply. The utility model adopts the following technical scheme. The automatic maintenance device comprises a maintenance control module, a human existence detection sensor and a power-off time preset module, wherein the human existence detection sensor is connected with the maintenance control module, the human existence detection sensor comprises an ultrasonic obstacle avoidance sensor which is arranged at the ceiling of an elevator car and used for detecting whether a person exists in the elevator car, the maintenance control module comprises a timing maintenance contactor KM, a miniature relay KA1 and a control circuit containing a miniature relay KA2 which are used for testing an emergency leveling device, when the maintenance timing time stored in the power-off time preset module is up, and the ultrasonic obstacle avoidance sensor detects that no person exists in the elevator car, the maintenance control module cuts off the mains supply of the elevator through a machine room total power switch so as to start the emergency power supply of the elevator, and simultaneously controls the internal wiring of an elevator car control panel so as to enable the elevator car to move to a preset floor for maintenance operation. The power-off time presetting module adopts STM32F103C8T6 as an MCU, uses a real-time clock RTC in the MCU to set years, months, days, hours, minutes and seconds of preset time and display the preset time on an LCD connected with the MCU, uses a small relay KA1 connected with the outside to switch modes, sets the mode in the idle time of the elevator and divides the mode into a normal operation mode and a timing maintenance mode; the power-off time preset module MCU level signal enables the small intermediate relay KA1 to be electrified through the photoelectric coupler. When the maintenance timing time stored in the power-off time preset module is up, and the ultrasonic obstacle avoidance sensor detects that no person is in the elevator car, the power-off time preset module level signal enables the small intermediate relay KA1 to be electrified, the automatic triggering action of the timing maintenance contactor KM is matched, the mains supply of the elevator is cut off through a machine room main power switch to enable the emergency power supply of the elevator to be started, and meanwhile the internal wiring of the elevator car control panel is controlled by the small relay KA2 to enable the elevator car to move to a preset floor for maintenance operation. After the power-off time preset module cuts off the mains su