The working principle of elevator safety tongs
Both ends of the working principle of the traction rope are respectively connected with the elevator car and counterweight, wound on the traction wheel and the guide wheel, traction motor through reducer gear drives the traction wheel to rotate by the traction rope and the traction wheel traction force generated by the implementation of the car and the heavy lifting movement, to achieve transportation purpose.
The car is a box body for carrying passengers or other loads. Counterweight is used to balance the load on the car and to reduce the power of the motor. The compensating device is used for compensating the tension and the weight change in the traction rope movement, so that the traction motor load is stable and the car can be accurately docked. The electric system realizes the control of the elevator movement, and completes the selection, leveling, speed measurement and lighting work at the same time. Indicates that the calling system shows the movement direction of the car and the position of the floor at any time. Safety device ensures the safety of elevator operation.
The guide shoe fixed on the car can move up and down along the fixed guide rail mounted on the wall of the building hoistway to prevent the car from skewing or swinging during operation. Normally closed block brake in the motor work, loose brake, so that the elevator running, in the case of power failure braking, so that the car stopped lifting, and at the designated level station to maintain its static state, for personnel and cargo access.
The elevator is provided with a layer door, a car running direction indicator lamp, a mathematical display car, a running position indicator layer and a calling lift button at each service layer. When the lift call button is used, go upstairs and press the button on the upper direction, then go downstairs and press the direction button. Two, the car arrived, floor shows the direction of motion direction of the car, the passengers to judge and determine the normal to the direction of the elevator after entering the car, pay attention to door closed, not in the layer with the car at the entrance door butt stay. Three, the car has position display, control panel and open and close button and floor selection button. After entering the car, lift the floor button as you want to go to the floor. To close the door immediately, push the button to close the door. The car floor position indicator light will reach the floor and leave when the door is open. Four, the elevator rated load of 13 people, can not overload operation, personnel overload, please take the initiative to withdraw. Five, passenger elevators can not often used as cargo elevator, it is absolutely not allowed to ship flammable and explosive products. Six, when abnormal or fault occurs in the elevator, should keep calm, you can call the car rescue call, must not be allowed to escape from the car door.
