2results about How to "Easy and quick release" patented technology

The utility model relates to the technical field of wheelchairs, in particular to a wheelchair protection fixing device which comprises a safety belt, the safety belt is transversely fixed to the upper portion of a wheelchair body, a protection assembly is installed on the front portion of the wheelchair body, the bottom of the protection assembly is fixed to the bottom of a backrest of the wheelchair body, and the top of the protection assembly is connected with the middle of the safety belt. An extension assembly is installed on the front side of the bottom of the wheelchair body, the protection assembly comprises a gasket, the gasket is located on a seat cushion of the wheelchair body, the top of the front end of the gasket is connected with a flexible cushion, the top of the flexible cushion is connected with screen cloth, and the top of the screen cloth is clamped and matched with the middle of a safety belt through a connecting mechanism. According to the wheelchair protection fixing device, the safety belt is transversely fixed to the upper portion of the wheelchair body and tightly connected with the protection assembly on the front portion, and the risk of slipping or injury is effectively avoided; and through the design of the connecting mechanism, clamping and releasing of the safety belt become simple and rapid, use habits of different passengers are adapted, and the practicability of the device is improved.

The application belongs to the technical field of petroleum drilling equipment, and discloses an integrated hydraulic chuck device, which comprises a shell, end covers, an adjusting mechanism and a clamping mechanism. The end covers are provided in two, and the two end covers are respectively detachably fixed at the two ends of the shell. The adjusting mechanism and the clamping mechanism are arranged in the interior of the shell. The adjusting mechanism comprises two piston guide blocks and two piston bodies. The two piston guide blocks are respectively fixedly connected with the two end covers. The piston bodies are respectively in sliding connection with the shell and the piston guide blocks. The clamping mechanism comprises two jaw seats and two jaw bodies. The two jaw seats are respectively fixedly connected with the two piston bodies. The two jaw seats are respectively provided with dovetail grooves. The jaw body is installed on the jaw seat through the dovetail groove. The two jaw bodies are oppositely arranged to form a clamping hole. The application has compact structure and convenient jaw replacement. During work, the drilling rod can be conveniently and quickly clamped and released, and the operation difficulty and the scratching risk are reduced.