公开(公告)号：US11174125B2

公开(公告)日：2021-11-16

申请号：US16324895

申请日：2016-10-31

Applicant: TAIYUAN UNIVERSITY OF TECHNOLOGY

Inventor： Ziming Kou ,  Juan Wu ,  Jianwei Yang ,  Guijun Gao ,  Jing Zhang ,  Peng Zhang ,  Liangji Zhao

IPC: B66B5/08 ,  B66B5/28 ,  B66B17/04 ,  B66B5/16

Abstract: An overwinding buffer device and method are employed for a vertical hoisting system including a derrick and a hoisting container. A hydraulic buffer device is disposed on the derrick, the hydraulic buffer device including at least one buffering hydraulic cylinder and buffering pressure rollers disposed corresponding to the buffering hydraulic cylinders; the buffering hydraulic cylinders are disposed on the derrick; piston rods of the buffering hydraulic cylinders are disposed horizontally and outer ends of the piston rods face towards the hoisting container; the buffering pressure rollers are horizontally fixed on an outer side wall of the hoisting container and arced surfaces of the buffering pressure rollers face towards the piston rods of the buffering hydraulic cylinders.

公开(公告)号：US10330213B2

公开(公告)日：2019-06-25

申请号：US16133430

申请日：2018-09-17

Applicant: Taiyuan University of Technology

Inventor： Ziming Kou ,  Guijun Gao ,  Yanfei Kou ,  Gongjun Cui ,  Jing Zhang ,  Hao Qin ,  Sijia Meng ,  Jing Liu ,  Liangji Zhao

IPC: F16K47/02 ,  F16K31/05 ,  F16K3/02 ,  F15B15/06 ,  F15B13/02 ,  F15B15/08 ,  F15B11/032 ,  F16K31/143 ,  F16K31/53 ,  F16K31/04

Abstract: Provided is an electromechanical-linkage hydraulic control gate valve actuator. The actuator includes a hand-operated speed-increasing gearbox assembly and a bidirectional throttle valve. In the present invention, a motor is driven to rotate through the hand-operated speed-increasing gearbox and thus a hydraulic system is driven to finally open and close a gate valve. An opening and closing speeds of the gate valve can be regulated and controlled through the bidirectional throttle valve. The present invention drives the motor through the hand-operated speed-increasing gearbox under emergency conditions such as repair and power failure, thereby controlling to open and close the gate valve. Meanwhile, a hydraulic system respectively regulates the speeds of two states of opening and closing through a bidirectional throttling technique, so as to effectively eliminate a water hammer phenomenon. The present invention has simple structure, light weight and modular installation, and enhances safety and reliability.