A latch-type tightening device structure comprises a body constituted by a seat and a housing, wherein an interior of the body is provided with a one-way braking mechanism which enables a rope to glide in one direction. The base component is mounted on the frame and one end of the link mechanism is mounted on the base component. Each WEC comprises a functional resource and is adapted to wirelessly communicate with other WECs. A safety latch retains the handle in place during operation and until it is desired to remove the pump.