Abstract: A central traction device for a straddling monorail train includes a traction pin and a traction beam. A central sleeve is provided at the center of the traction beam, and the traction pin is mounted in the central sleeve. An inner cavity of the central sleeve has a corset-shaped structure having large diameters on an upper end and a lower end and a small diameter at a middle part, forming double tapered bevels, and a resilient rubber bush is provided between an inner wall of the central sleeve and the traction pin. The device has a simple and compact overall structure and facilitates connection and separation between the train body and the bogie; by providing the lift assembly, the traction device is fixedly connected to the frame, thus the traction device can be wholly lifted; and operation process and environment of raising and lowering the vehicle are improved.

Abstract: Disclosed herein is a floating ball filling-control device for a cryogenic tank with enhanced structural stability. The floating ball filling-control device comprises a liquid feeding pipe (2) with a liquid discharging end disposed in the liquid storage tank (1), the liquid feeding pipe (2) having liquid spraying holes (3) located on the pipe wall at the top of the pipe, and a slide valve (4) arranged on the top end of the liquid feeding pipe, wherein the slide valve is in a sliding fit with the liquid feeding pipe in a vertical direction via a floating ball lever driving mechanism, and forms an open/close mechanism for the liquid spraying holes via a control mechanism.

Abstract: Disclosed herein is a floating ball filling-control device for a cryogenic tank with enhanced structural stability. The floating ball filling-control device comprises a liquid feeding pipe (2) with a liquid discharging end disposed in the liquid storage tank (1), the liquid feeding pipe (2) having liquid spraying holes (3) located on the pipe wall at the top of the pipe, and a slide valve (4) arranged on the top end of the liquid feeding pipe, wherein the slide valve is in a sliding fit with the liquid feeding pipe in a vertical direction via a floating ball lever driving mechanism, and forms an open/close mechanism for the liquid spraying holes via a control mechanism.

Abstract: An oceanic wave energy utilization system includes a floating energy collection device, an energy transfer device and an energy conversion device. The floating energy collection device is connected to the energy conversion device via the energy transfer device. The floating energy collection device is made up of a hull-shaped float and a float limitation device. Vertical energy collection plates are arranged at the underside of the float, while the energy transfer device is made up of a fixed seat and an energy transfer rod, said fixed seat being fixed at shore-side or at the seabed and movably connected to the energy transfer rod. The energy transfer rod is movably connected to the floating energy collection device and to the energy conversion device.

Abstract: An oceanic wave energy utilization system includes a floating energy collection device (1), an energy transfer device (2) and an energy conversion device (4). The floating energy collection device is connected to the energy conversion device via the energy transfer device. The floating energy collection device is made up of a hull-shaped float and a float limitation device. Vertical energy collection plates (101) are arranged at the underside of the float, while the energy transfer device is made up of a fixed seat and an energy transfer rod, said fixed seat being fixed at shore-side or at the seabed and movably connected to the energy transfer rod. The energy transfer rod is movably connected to the floating energy collection device and to the energy conversion device.