Patent ID: 9689121
Date: 2017-06-27
CPC Classifications: E01F

Claim:
1. A piston-type variable-speed control device, comprising: a plurality of piston-type speed bump structure apparatuses installed on a road surface; a vehicle speed detection device; a speed controller communicatively connected with the plurality of piston-type speed bump structure apparatuses and the vehicle speed detection device, respectively; and an electrical power supply connected to the speed controller, wherein: each of the piston-type speed bump structure apparatuses comprises a ridge platform having a surface covered with a yellow-and-black-striped rubber material, the ridge platform being raised above the road surface at an initial state of the piston-type variable-speed control device, a plurality of pistons and a plurality of piston rods and a plurality of fluid cylinders are placed under the ridge platform, the ridge platform is connected with the pistons via the piston rods, each of the pistons is contained in a corresponding one of the fluid cylinders, a rubber seal ring is placed at a joint of each of the piston rods and a corresponding one of the fluid cylinders, a piston ring is placed on each of the pistons, a fluid inlet and a fluid outlet that are located at a side surface of each of the fluid cylinders are connected with a pump by a pipeline, each of the fluid cylinders is connected with a fixed base, the fluid cylinders, the pipeline, and the pump are filled with a fluid, a movement of the pistons is controlled by the fluid, the pump is connected with the electrical power supply through the speed controller, and the vehicle speed detection device is connected with the speed controller via a wireless signal receiver.