4 results about "Double tongue" patented technology

The utility model discloses adjustable ground wire hook device relates to power transmission line safety appliance technical field, specifically includes double tongue tension type metal hook, male head, female head, insulating operating stick and ground copper wire, and the double tongue tension type metal hook is with male head through first screw fastening connection and constitutes first detachable assembly, and female head is with insulating operating stick through second screw fastening connection and constitutes second detachable assembly, and first detachable assembly is with second detachable assembly through male head and female head realizes detachable connection. The application can set up ground wire in different angles for various types of tower in power transmission line through adding adjustable device between ground wire hook and insulating operating stick, improves the close degree of ground wire setting, the qualified proportion, simultaneously, the function of its adjustment angle can reduce the displacement frequency of high altitude operation personnel on the transmission tower, reduces the operation risk, and protects the safety of operation personnel.

The invention discloses a manufacturing method of a double-baffle-tongue volute for a centrifugal pump and the double-baffle-tongue volute, and aims to provide the double-baffle-tongue volute for the centrifugal pump, which is used for improving the poor flow phenomenon of the centrifugal pump, improving the efficiency and the stability, optimizing the flow state of an internal flow field, reducing the energy consumption, reducing the pulsation characteristic and improving the performance of the centrifugal pump. According to the technical scheme, the manufacturing method is characterized by comprising the steps of integrated blank preparation, preliminary quality detection and finish machining, separation tongue gap detection, cooling, qualified product surface strengthening treatment, residual stress detection, bullet breakage rate detection and performance detection. And unqualified products can be found in time, the products which can be trimmed can be trimmed, the quality of the products is ensured, and the reliability and the stability of the products are improved. The invention is suitable for the technical field of centrifugal pumps.

The utility model belongs to the technical field of insulating operating rods, in particular to an electric disassembly and assembly insulating operating rod, comprising a telescopic insulating rod with a hollow structure, and a bracket head arranged on the top of the telescopic insulating rod, and also comprising an upper double-tongue component and a lower double-tongue component arranged on the bracket head, and a hammering component arranged on the bracket head. The bracket head is pushed to the top of the cable through the telescopic insulating rod, and then the bracket head is moved downward. The cable passes through the lower double-tongue component and enters the interior of the bracket head, and then the upper lever is toggled to rotate. The upper lever pulls the limit slider to slide inside the limit slide cylinder through a pull rope and a tension spring, and stretches the tension spring. At this time, the cable is clamped between the hammering components, and then the force applied to the upper lever is released. At this time, the tension spring is reset to exert an outward impact on the limit slider, so that the hammer head on the limit slider breaks the ice layer on the outer layer of the cable, thereby ensuring the grounding effect and improving safety.

The utility model relates to the technical field of sealing structures, and discloses a double-tongue-groove sealing structure of a rotational molding box, which comprises a box body and a box cover, the box cover is arranged above the box body, the top of the box body is provided with a bulge, the bottom of the box cover is provided with a groove at a position corresponding to the bulge, and the groove is matched with the bulge in a clamping and embedding manner. A sealing rubber strip used for sealing is embedded in the groove, and a flange structure used for improving the sealing effect is further arranged on the inner wall of the groove. According to the utility model, the flange structure is additionally arranged at the bottom of the groove of the box cover, when the rubber strip is mounted, the rubber strip is tightly fitted with the groove of the box cover through pre-pressing force, at the moment, the middle line position of the arc surface of the rubber strip is elastically deformed, and the rubber strip and the flange structure form a sealing line with certain pressing force, so that the sealing effect between the sealing rubber strip and the groove is enhanced; tests prove that the sealing effect is obviously improved through the structure.