1. Rope loosening and broken protection device: When the lifting wire rope of the stacker is loosened or broken, the power supply of the lifting motor is automatically cut off, and the brake of the loading platform is stuck on the column to prevent the loading platform from falling. ?

2. The stacker has an overload protection device, which automatically cuts off the power supply of the hoisting motor when the load exceeds 10% of the rated hoisting weight.

3. The stacker is equipped with double protection devices of lifting limit switch and mechanical buffer. When the cargo platform exceeds the normal lifting stroke and reaches the upper and lower limit positions, the switch is triggered to automatically cut off the power supply of the lifting motor, and the cargo platform will stop running. In addition, buffer blocks with good impact resistance are added outside the upper and lower limit positions, forcing the cargo platform to stop running. ?

4. The stacker is equipped with double protection devices of operating limit switch and mechanical buffer block. When the stacker exceeds the normal running stroke and reaches the left and right limit positions, the trigger switch automatically cuts off the power supply of the running motor, and the stacker will stop running. In addition, buffer blocks with good impact resistance are added outside the left and right limit positions, forcing the stacker to stop running. The force acting on the buffer block when the stacker is walking at high speed with full load is calculated. ?

5. The stacker is equipped with a manual emergency stop button, which can cut off the main power supply of the stacker in an emergency. ?

6. Electrical interlocking protection of the stacker.

7. The multi-position stacker is equipped with interlocking device to ensure that the stacker can only be operated from one position at a time.

8. The control modes should be interlocked to ensure that only one of manual, semi-automatic, automatic and computer online control is allowed at a certain moment.

9. When the fork is not in the middle position (it is not in the correct position when it is closed) or the fork is moving, the walking and high-speed lifting of the stacker will be locked; Forks will be locked when the stacker is running, lifting at high speed or the stacker breaks down.

10. The control circuit shall also have the following conventional interlocks and protections: voltage loss protection, zero position protection of operating switch, forward and reverse motor interlock, interlock of different speed classes, short circuit and overload protection. ?

1 1. The stacker is equipped with an audible alarm device. Before the running mechanism is started, the audio signal should be given first. ?

12. The stacker has the functions of fault alarm and self-diagnosis. ?

13, all roadway openings/doors automatically cut off the power supply in case of emergency power failure of the stacker.

14. The cargo platform is equipped with cargo superelevation and collapse detection to avoid accidents caused by cargo exceeding the stacker. ?

15. The cargo platform is equipped with actual or false cargo position detection to confirm whether the cargo position is available or not, so as to avoid repeated warehousing. When there is any goods in the cargo space, the delivery will be stopped and an alarm will be given.

16. Forks are equipped with limit switches and mechanical stoppers. Forks are equipped with a first fork and a second fork, which are used for centering detection to prevent the fork from misoperation when the stacker is walking and lifting. At the same time, the limit switch and mechanical limiter at the terminal of the fork ensure the safety of the stacker in the track roadway.

17. The front fork is equipped with a torque limiter. When the fork encounters an obstacle in the extension process, when the resistance reaches the specified value, the torque limiter of the fork slips and the fork stops extending.

18. There is a track cleaner in front of the walking wheel of the stacker. ?

19. The safety factor of hoisting wire rope selected for stacker is greater than 6. ?

20. The safety protection device shall be installed in a position convenient for inspection and maintenance.

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