Abstract: The present disclosure relates to the field of EV-DWPT (electric vehicle dynamic wireless power transfer), and specifically discloses a double solenoid EV-DWPT system and a parameter optimization method thereof. The system is provided with a magnetic coupling mechanism, comprising a transmitting structure and a receiving structure. The transmitting structure includes a plurality of double solenoid transmitting rails arranged equidistantly along a road direction. Each double solenoid transmitting rail includes a square tubular magnetic core perpendicular to the road surface, and transmitting solenoids wound spirally using one and the same Litz wire wound in opposite directions.

Abstract: The present disclosure relates to packaging equipment for continuous automatic net sleeving of a casing, a shirring machine and a packaging method. The packaging equipment is provided with a shuttle; a first gripper, capable of being opened or closed to release or clamp and fix the shuttle; a second gripper, capable of driving an open end of the net bag to make reciprocating motion between a first position and a second position on the shuttle when being closed, and capable of allowing the net bag to move freely in a net bag conveying direction when being opened; a third gripper, configured to clamp the open end of the net bag and pull the net bag to sleeve a whole shirred casing in a penetrating mode; and a fourth gripper, configured to pull the net bag, and designed to be capable of moving with the third gripper.

Abstract: The present disclosure relates to packaging equipment for continuous automatic net sleeving of a casing, a shirring machine and a packaging method. The packaging equipment is provided with a shuttle; a first gripper, capable of being opened or closed to release or clamp and fix the shuttle; a second gripper, capable of driving an open end of the net bag to make reciprocating motion between a first position and a second position on the shuttle when being closed, and capable of allowing the net bag to move freely in a net bag conveying direction when being opened; a third gripper, configured to clamp the open end of the net bag and pull the net bag to sleeve a whole shirred casing in a penetrating mode; and a fourth gripper, configured to pull the net bag, and designed to be capable of moving with the third gripper.

Abstract: A knot tying device is provided. The knot typing device includes a support with a gripper element with one end of the gripper element rotatably connected to the support, and the other end capable of being pressed on and released from the support; a gripper mechanism to grip a free end of a strand of material and carry the strand of material to wrap around the support capable of rising and falling; and a stripping mechanism to separate the strand of material wrapped around the support from the support to form a knot.

Abstract: A knot tying device, comprises: a support with a gripper element with one end of the gripper element rotatably connected to the support, and the other end capable of being pressed on and released from the support; a gripper mechanism to grip a free end of a strand of material and carry the strand of material to wrap around the support capable of rising and falling; and a stripping mechanism to separate the strand of material wrapped around the support from the support to form a knot. After the gripper mechanism carries the strand of material to wrap around the support at a position below the gripper element by at least half of a circle, the support falls so that the strand of material passes through the gripper element, and the gripper element is pressed on the support to make the free end of the strand of material fixedly gripped between the gripper element and the support.