8results about How to "Guaranteed fastening force" patented technology

The utility model discloses an ophthalmic cavity instrument multi-channel cleaning frame, specifically relates to ophthalmic cavity instrument cleaning technical field is equipped with the connecting pipe, and the connecting pipe includes: rigid fixed head, is connected on the connecting pipe, and the faraway connecting pipe one end is equipped with the help suction connecting portion, is used for with the help suction hole detachable connection of injection suction handle, the elastic hose is equipped in the side of rigid fixed head, and the front end is equipped with perfusion connecting portion, is used for with the perfusion hole sealed connection of injection suction handle. The utility model through setting up rigid fixed head on the basis, the elastic hose is installed in the side, realizes the one side channel of cavity instrument and is fixed in rigid fixed head place, and the other side uses the butt joint of elastic hose and connects, realizes double channel simultaneous flushing, guarantees the cleaning effect of instrument cleaning, also reduces the manual work of staff, improves the work efficiency.

The invention discloses a multifunctional pipe wrench, and relates to the technical field of pipe wrenches. Comprising a fixed plier handle, a fixed plier head is fixedly installed at the end of the fixed plier handle, a movable plier groove is formed in the fixed plier head, an adjusting bolt is rotationally installed in the movable plier groove, and a movable plier head is movably installed on the upper end face of the fixed plier head; a fastening assembly is arranged on the fixed tong head and the movable tong head, a driving assembly is arranged on the fixed tong handle, a positioning assembly is arranged on the driving assembly, clamping force between the pipe tong and a pipeline is enhanced through cooperation of the fastening assembly and the positioning assembly, and the fastening assembly comprises a positioning wheel rotationally installed on the movable tong head. And the positioning wheel is fixedly connected with a fastening chain. According to the pipe wrench, through cooperative use of the fastening assembly, the driving assembly and the positioning assembly, the fastening force between the pipe wrench and a pipeline is ensured, the more uniform and stable fastening effect on the pipeline is achieved, and meanwhile the working efficiency and safety are improved.

The invention discloses an equal-height grinding method and device for a cylindrical fragile part. The method comprises the steps that one end face of the cylindrical fragile part is selected as a base face; a fastening ring is arranged on the cylindrical fragile piece in a sleeving mode; the clamping assembly is arranged on a magnetic suction cup of a grinding machine, the base face of the cylindrical fragile part is tightly attached to the magnetic suction cup, the clamping assembly is located on the peripheral side of the cylindrical fragile part, and the fastening ring is arranged between the cylindrical fragile part and the clamping assembly in a clamped mode; a magnetic suction cup of the grinding machine is magnetized, and the clamping assembly is moved in the direction close to the cylindrical fragile part till the cylindrical fragile part is clamped by the clamping assembly; and performing equal-height grinding on the cylindrical fragile part. According to the equal-height grinding method and device for the cylindrical fragile part, the machining time can be effectively shortened, raw materials are saved, and the cost is reduced.

The present invention relates to the technical field of fasteners, and in particular to an embedded axial pressure compensating flange anti-loosening nut; the invention comprises a flange nut, an insert and a compensating energy accumulator, wherein a first groove and a second groove are arranged inside the flange nut, the insert is arranged inside the first groove, the compensating energy accumulator is arranged inside the second groove, a side wall on one side of the insert contacts the inner wall of the flange nut, and a side wall on the other side of the insert contacts the compensating energy accumulator, and the insert and the compensating energy accumulator are sleeved on the outside of a screw; the first groove is provided with an inner conical surface, the insert is provided with an outer conical surface, and the outer conical surface of the insert abuts against the inner conical surface of the first groove; the first groove is interference fit with the insert; an opening is arranged on the insert; the present invention improves the anti-loosening ability of the nut while ensuring the service life of the nut.

The invention relates to the technical field of steel bar connection, in particular to a high-load shockproof lock bolt sleeve. The clamping plates are evenly arranged in the circumferential direction of the reinforcing steel bars at intervals and cover the outer sides of the axial abutting positions of the reinforcing steel bars, and the clamping plates can initially position the reinforcing steel bars and prevent displacement and shaking; the sleeve sleeves the outer side of the clamping plate and is in threaded connection with the clamping plate, and the sleeve and the clamping plate are matched to form a double-layer structure to provide stable fastening force for steel bar connection so as to cope with high-load conditions; the pair of plug covers respectively sleeve the reinforcing steel bar and are in threaded connection with the reinforcing steel bar and the sleeve, so that the clamping plate can be axially locked and prevented from loosening, meanwhile, the plug covers can effectively resist loosening or displacement during complex stress, and the stability of a connecting part is greatly improved; the elastic sleeve wraps the sleeve and the outer side of the plug cover, the protection effect is achieved, and the reliability and stability of steel bar connection in the high-load and complex stress environment are effectively improved.

The invention relates to an integrated conductive structure in a small space, a use method and an installation tool. The integrated conductive structure comprises an isolation insulation pull rod which is connected with an isolation insulation crank arm and moves transversely, and an isolation moving contact which is connected with the isolation insulation pull rod and moves transversely. A static contact of the vacuum arc-extinguishing chamber is connected with an isolation moving contact through an isolation middle contact, a static side outgoing line insert is connected with the isolation moving contact through a static side spring contact finger, and the isolation middle contact is located between the static side spring contact finger and an isolation insulation pull rod. A traditional swing type structure is replaced by the isolation insulation pull rod and the isolation moving contact which move transversely, and the isolation switch is suitable for switching on and switching off in a small space; through the arrangement of the solid-sealed polar pole and the integrated pouring, the strength can be enhanced, the space can be saved, and through the arrangement of the gap, a worker can directly judge the switching-on or switching-off condition through the position of the isolation moving contact in the gap, so that the observation is more visual.

The centrifugal pump with the friction-resistant rigid coupler comprises a bottom plate, a motor shaft and a pump shaft, connecting bases and connecting covers are attached to the ends, close to each other, of the motor shaft and the pump shaft, and the connecting bases are fixedly connected with the corresponding connecting covers through two symmetrically-arranged connecting assemblies. The ends, close to each other, of the two connecting bases are fixedly connected with a first coupling and a second coupling respectively, the sides, close to each other, of the first coupling and the second coupling are fixedly connected with a second coupling petal and a first coupling petal respectively, the second coupling petal and the first coupling petal are connected in a matched and inserted mode, and an interlayer pad is arranged between the first coupling petal and the second coupling petal. The connecting assembly comprises two connecting plates and two anti-loosening assemblies symmetrically arranged at the bottom of the lower connecting plate. By means of the structure, friction abrasion between the first coupling and the second coupling can be reduced by arranging the interlayer pad, the fastening force of the nut is guaranteed by arranging the anti-loosening assembly, and the reliability and stability of operation of the centrifugal pump are improved.

The utility model provides a diameter-expandable nylon rod pin which comprises a nylon rod body, and a through hole is formed in the axial center of the nylon rod body. The high-strength countersunk bolt comprises a countersunk end and a screw part, the diameter of the countersunk end is larger than the aperture of the through hole, the countersunk end is embedded into the counter bore in one end of the nylon rod body, and the screw part penetrates through the through hole; the countersunk head nut comprises a countersunk head groove, and the countersunk head nut is in threaded connection with the tail end of the screw rod part; the outer surface of the tail end of the countersunk nut and the end face of the end, away from the high-strength countersunk bolt, of the nylon rod body are coplanar. The diameter of the nylon rod pin can be expanded or shrunk within a certain range, so that the overall connection strength is improved, and different assembly size requirements are met.