What protective measures should be taken for elevators, and what are the protective measures for ele

There are many protective measures for elevators, such as power-off protection, overload protection, limit protection, door opening and closing protection, etc.

The elevator itself is a perfect transportation equipment, which adopts a variety of safety measures to eliminate potential safety hazards such as falling and rushing to the top. As long as the elevator is used correctly and regularly maintained and inspected, no safety accidents will occur. The main safety protection devices are speed limiters, safety gears, and buffers.

The speed limiter is an overspeed detection device, which is generally installed on the top of the elevator machine room or elevator shaft, and is also installed in the pit. When the elevator overspeeds to the set electrical action speed, it will cut off the safety circuit of the elevator through the electrical switch, and then cut off the power supply of the system. If the elevator continues to overspeed due to gravity or inertia, the mechanical action device of the speed limiter will be triggered, so that the speed limiting wire rope will stop moving, so as to lift the safety gear.

A safety gear is a braking device that is installed at the bottom of an elevator car or elevator counterweight. It includes two parts: lifting mechanism and braking mechanism.

The function of the lifting mechanism is to transmit the mechanical action of the speed limiter to the braking mechanism and make the braking mechanism move, and the wedge-shaped block inside it will jam the elevator on the guide rail after the braking mechanism acts.

Avoid further falls of the elevator.

The buffer is installed in the pit of the elevator shaft. Its function is to prevent the bottom of the elevator pier. It can reduce the impact at the bottom of the elevator pier to reduce the injury to the elevator itself and the passengers in the elevator.

The protection measures of the elevator control system mainly include the following aspects: 1Elevator Door Lock Protection:

The elevator door lock is an important guarantee for the safety of the elevator, if the door lock is damaged or invalid, it will cause the elevator to operate normally. Therefore, the elevator control system should be equipped with a door lock protection device, when the door lock is damaged or invalid, it can stop the elevator in time. 2.

Elevator speed limiter protection: The elevator speed limiter is an important guarantee for elevator safety, if the speed limiter fails or is damaged, it will cause the elevator to lose control, resulting in serious consequences. Therefore, the elevator control system should be equipped with a speed limiter protection device, which can stop the elevator operation in time when the speed limiter fails or is damaged.

3.Elevator overload protection: Elevator overload is one of the important hidden dangers of elevator safety, if the elevator is overloaded, it will cause the elevator to lose balance, resulting in serious consequences.

Therefore, the elevator control system should be equipped with an overload protection device, when the elevator is overloaded, the elevator operation can be stopped in time. 4.Elevator Fault Protection:

The elevator control system should be equipped with a fault protection device, when the elevator fails, the elevator operation can be stopped in time to avoid greater losses. 5.Elevator Emergency Stop Protection:

The elevator control system should be equipped with an emergency stop device, which can stop the elevator operation in time when the elevator has an emergency to ensure the safety of passengers. 6.Elevator operation monitoring and protection:

The elevator control system should be equipped with an operation monitoring device to monitor the operation status of the elevator in real time, find problems in time and take measures to ensure the safe operation of the elevator.

Summary. Hello dear<>

Elevator door protection: The elevator door is equipped with safety devices, such as infrared sensors, photoelectric switches, etc., which can detect whether there are people or objects at the door to avoid people or objects being caught in the door. 2.

Elevator car protection: The elevator car is equipped with an emergency stop button, an emergency call device, etc., which can stop the elevator operation or contact the outside world in an emergency. 3.

Elevator upward protection: When the elevator is going up, if it is overloaded or the speed is too fast, the elevator control system will automatically stop the elevator operation to ensure the safety of passengers. 4.

Elevator downward protection: When the elevator is going down, if the elevator speed is too fast or there is an obstacle at the bottom of the elevator, the elevator control system will automatically stop the elevator operation to avoid the elevator falling or hitting the obstacle. 5.

Elevator fault protection: The elevator control system will automatically detect the running status of the elevator, and if a fault is found, it will automatically stop the elevator operation, and send out an alarm signal to remind passengers to pay attention to safety. 6.

Elevator emergency rescue protection: The elevator control system is equipped with an emergency rescue device, which can rescue in time when the elevator fails or passengers are trapped.

What are the protective measures of the elevator control system?

Hello dear<>

Elevator door protection: The elevator door is equipped with safety devices, such as infrared sensors, photoelectric switches, etc., which can detect whether there are people or objects at the door to avoid people or objects being caught in the door. 2.

Elevator car protection: The elevator car is equipped with an emergency stop button, an emergency call device, etc., which can stop the elevator operation or contact the outside world in an emergency. 3.

Elevator upward protection: When the elevator is going up, if the elevator is overloaded or the speed is too fast, the elevator control system will automatically stop the elevator operation to ensure the safety of passengers. 4.

Elevator downward protection: When the elevator is going down, if the elevator speed is too fast or there is an obstacle at the bottom of the elevator, the elevator control system will automatically stop the elevator operation to avoid the elevator falling or hitting the obstacles. 5.

Elevator fault protection: The elevator control system will automatically detect the running status of the elevator, and if a fault is found, it will automatically stop the elevator operation, and send out an alarm signal to remind passengers to pay attention to safety. 6.

Elevator emergency rescue protection: The elevator control system is equipped with an emergency rescue device, which can rescue in time when the elevator fails or passengers are trapped.

Pro, it should be noted before dressing up that the above protection is only part of the elevator control system, and the safety of the elevator also requires passengers to consciously abide by the elevator use regulations, as well as the regular maintenance and maintenance of elevator maintenance personnel.

The protection measures of the elevator control system include:1Overcurrent Protection:

When the elevator current is abnormal, the flashlight will be automatically cut off to avoid damage to the motor. 2.Overload Protection:

When the elevator is not overloaded, an alarm will be issued and stopped to avoid safety accidents. 3.Overvoltage Protection:

When the elevator voltage is abnormally high, the power will be automatically cut off to avoid damage to the electrical equipment. 4.Undervoltage Protection:

When the elevator voltage is abnormally low, it will automatically cut off the power to avoid damage to the electrical equipment. 5.Over Temperature Protection:

When the temperature of the elevator motor is too high, it will automatically stop to avoid damage to the motor. 6.Galvanic Isolation Protection:

Set up electrical isolation switch in the elevator equipment to ensure the safety of electrical equipment. 7.Fire protection in the computer room:

Set up smoke detectors, fire extinguishers and other equipment in the computer room to avoid fire accidents. 8.Emergency Stop Protection:

An emergency stop button is set in the elevator to stop in time in case of emergency. 9.Camera Surveillance Protection:

Set up cameras in the elevator to monitor the elevator operation and prevent malicious damage and safety accidents. 10.Door Lock Protection:

Anti-pinch devices and door locks are installed on the elevator doors to ensure the safety of passengers.

Power supply system off-stage, off-phase protection device or protection function.

Overspeed (runaway) protection; The speed limiter-safety gear system is linked.

Bottoming (topping) protection: buffers.

Excess stroke protection: forced speed switch, liquid limit switch and polar wheel limit switch.

Landing door and car door electrical interlocking device.

Emergency operation device and stop protection device: alarm bell, **, overload protection, speed limiter rope break switch, etc.

Overhaul and sell buried letter running device, car top priority.

1. Protection against exceeding the stroke: forced deceleration switch, limit switch, limit switch;

2. Protection against elevator overspeed and broken rope: speed limiter, safety gear;

3. Protection against personnel shearing and falling: the door, door lock and door electrical safety contact are jointly undertaken;

4. Buffer device: buffer;

5. Alarm and rescue device: alarm device includes: alarm bell, intercom device, internal straight line alarm or network networking; Rescue devices include:

The emergency manual operation device of the traction machine and the manual unlocking device of the landing door, the emergency electric running device, the hoistway safety door, the car safety door, and the car safety window.

6. Stop switch and maintenance and operation device: The stop switch is generally called the emergency stop switch, and the stop switch must be installed between the car roof, pit and pulley as required. The overhaul operation is set to facilitate overhaul and maintenance, and is controlled by the overhaul operation device installed on the car top or other places, when the parts other than the car roof are such as:

When the machine room and car also have maintenance and operation devices, it is necessary to ensure that the maintenance switch on the car top is "preferred".

7. Fire fighting function.

8. Protection against mechanical injuries.

9. Electrical safety protection: protection against direct electric shock, protection against intermittent contact, and protection against electrical faults - protection against power supply phase failure and phase error;

10. Residual gear of electric anti-destruction volcanic gas safety device: directly cut off the safety contact of the power contactor or intermediate relay of the driving host; The safety contacts that do not directly cut off the above contactors or intermediate relays and the contacts that do not meet the requirements of the safety contacts.