50results about How to "Guaranteed reset effect" patented technology

The invention provides a combined anti-tension and position-limiting shock-isolation bearing, which includes: an upper connector, a rubber bearing, a lower connector, a cover plate, a plurality of elastic members and a plurality of steel wire ropes, and the cover plate is arranged on the upper connector box In the cavity and the top surface of the cover plate is lower than the top surface of the upper connector, the elastic member is arranged between the cover plate and the upper connector, the rubber bearing is arranged between the bottom plate of the upper connector and the lower connector, and the box-type cavity There is a limit device in the body, and the steel wire rope passes through the box-type cavity, one end of which is anchored on the cover plate and the other end is anchored on the lower connecting piece; when the rubber bearing is subjected to tension, the steel wire rope transmits the tension to the elastic member to bear part of the tension ; When the rubber bearing is deformed too much due to shearing or tension, the limit device restricts its continuous deformation, so that it can not only achieve the shock isolation effect of ordinary vibration-isolation bearings, but also ensure that the rubber bearing itself can withstand a large tensile force. The structure is not easy to be damaged, thus effectively ensuring the safety and reset capability of the upper structure under the action of earthquake.

The invention relates to the field of asphalt gravel mixing, in particular to a rubber asphalt mixing device, which includes a mixing box and two mixing units, each mixing unit includes a rotating tube, a heat exchange tube and a number of mixing parts, and each mixing part includes a stirring unit Frame, baffle, slide plate and push plate, one end of the stirring frame is connected with the rotating pipe, the other end of the stirring frame is hinged with the baffle plate, the sliding plate is set on the stirring frame and runs through the rotating pipe, one end of the sliding plate is hinged with the baffle plate, the sliding plate The other end of the push plate can be in contact with the heat exchange tube, and the push plate is fixedly connected with the slide plate. When the technical scheme is adopted, it is beneficial to improve the mixing effect of gravel and asphalt.

The invention discloses a hydraulic unsealing oil pipe anchor, and relates to the technical field of oil field downhole tools. The hydraulic unsealing oil pipe anchor includes an upper joint, a central pipe, a slip and a setting and unsealing mechanism. The upper joint is threadedly connected to the upper end of the central pipe. The setting and unsealing mechanism includes a cone, a setting piston, a piston sleeve, a lock sleeve, a setting sleeve, a lock spring hook, a lower joint and a setting pin. The cone is threadedly connected to the upper end of the piston sleeve. The setting piston isarranged in the piston sleeve. The piston sleeve and the setting sleeve are threadedly connected into one body. The lock sleeve is threadedly connected to the setting sleeve. The lower joint is threadedly connected to the lower end of the central pipe. The setting sleeve is connected to the lower joint through the setting pin. The lock spring hook is threadedly connected to the central pipe. The side wall of the central pipe is provided with an internal liquid passing hole. The side surface of the cone is provided with an external liquid passing hole. Through the arrangement of the combined setting piston composed of a main piston and an auxiliary piston, the piston sleeve and the setting sleeve are forced to be completely reset.