Elevator safety protection device for preventing cage from accidental movement and working method of elevator safety protection device

[0026] Embodiment: An elevator safety protection device for preventing accidental movement of the car, which is characterized in that it includes a pair of double-axis ball screw rail slides 2, a pair of steel bars 3, a pair of protective covers 6, a pair of control switches 4, Stepper motor driver and motor controller, the pair of protective covers 6 are respectively fixed on the top and bottom of the car 1, the double-axis ball screw track slide 1 is fixed in the protective cover 6, and the square steel 3 is fixed On the movable sliding block 7 of the double-axis ball screw track slide table 2, a control switch 4 for controlling the power on and off of the car door is provided on the slideway of the double-axis ball screw track slide table 2 on the top of the car 1 , the slideway of the double-axis ball screw track slide 2 at the bottom of the car 1 is provided with a control switch 4 for controlling the power on and off of the leveling door, and a square steel hole 5 is provided in the hoistway where the elevator is located. In the state, the square steel 3 is flush with the square steel hole 5, and the dual-axis ball screw track slide 2 is provided with a stepper motor. The stepper motor is connected to the stepper motor driver through a wire, and the stepper motor The driver controls the operation of the stepping motor, the stepping motor driver is connected to the stepping motor controller through wires, the stepping motor controller converts electrical signals into pulse signals, and the stepping motor controller is connected to the general elevator controller through wires.

[0027] The above-mentioned square steel 3 is connected with the movable sliding block 7 of the dual-axis ball screw track slide 2 through four long screws.

[0028] The above-mentioned control switch 4 is arranged at the end point of the bottom of the double-axis ball screw track slide 2 close to one end of the square steel hole 5 .

[0029] The above-mentioned square steel 3 is a steel body structure with a size of 1500 mm in length, 100 mm in width and 100 mm in height.

[0030] The above-mentioned protective cover 6 is a steel square cylindrical structure with an inner diameter of 110 mm×110 mm.

[0031] The above-mentioned control switch 4 for controlling the power on and off of the car door and the control switch 4 for controlling the power on and off of the leveling door both use travel switches.

[0032] Two brackets 8 are provided on the side of the above-mentioned dual-axis ball screw track slide 2 that is close to the square steel hole 5 .

[0033] A working method of an elevator safety protection device for preventing accidental movement of a car, characterized in that the specific steps are as follows:

[0034] (1) When the elevator is in normal running state and car 1 reaches the leveling area, the running state changes from constant linear motion to deceleration stop. At this time, the elevator master controller sends a signal to the stepper motor controller, and the stepper motor controls The controller converts the electrical signal into a pulse signal and transmits it to the stepper motor driver. The stepper motor driver controls the double-axis ball screw track slide table 2 arranged at the top and bottom of the car to push the square steel 3 to extend out. Partially inserted into the square steel hole 5 that is flush with the square steel 3;

[0035] (2) During the process of extending the square steel 3, the movable slider 7 automatically presses the control switch 4 that controls the power on and off of the car door and the control switch 4 that controls the leveling door with the movement of the square steel. connection, the car door and the landing door can be opened;

[0036] (3) If the car 1 moves unexpectedly during the process of opening the door to welcome guests, the square steel 3 restrains the car 1 so that it cannot move. 2. If it is completely damaged, the protective cover 6 will withstand the square steel 3, so that the square steel 3 can restrain the car 1 and make it unable to move;

[0037] (4) When the car 1 is ready to leave the leveling area, after the car door is closed, the elevator master controller sends a signal to the stepper motor controller, and the stepper motor controller converts the electrical signal into a pulse signal and transmits it to the stepper motor. The motor driver and the stepper motor driver control the double-axis ball screw track slide 2 to pull the square steel 3 to retract inward. At the same time, the movable slider 7 leaves with the movement of the square steel 3 to control the on-off of the car door. The electric control switch 4 and the control switch 4 for controlling the power on and off of the leveling door make the control switch automatically lift up. At this time, the access is disconnected, and the car door and leveling door cannot be opened.

[0038] In the above-mentioned step (3), when the car 1 moves unexpectedly, the square steel 3 is supported by two brackets 8 on one side of the double-axis ball screw track slide 2, and the square steel 3 is evenly stressed to avoid long screws. torn off.