7results about How to "Free replacement" patented technology

The utility model relates to a tubular aeration device which comprises an aeration pipe, the aeration pipe is formed by sequentially connecting a plurality of aeration branch pipes, one end of each aeration branch pipe is sleeved with a connector, and the other end of each aeration branch pipe is provided with a pipe tail. The adjacent ends of the two aeration branch pipes are connected through the connector to complete the combined installation of the two aeration branch pipes, so that the combined installation of a plurality of aeration branch pipes is realized, the operation is simple and convenient, and the aeration branch pipes can be freely disassembled and replaced, have the characteristics of standardization, combination, universality and the like, and are convenient to disassemble and replace.

The utility model provides a split type ring rivet structure's inlay hard jewelry, it includes hard main part, rivet, inlay component and decorative stone, the plasticity of inlay component is greater than hard main part. The hard main part is provided with the installation groove for installing inlay component, the bottom surface in the installation groove is fixedly provided with the rivet, inlay component is fixed in the installation groove through the rivet, inlay component is provided with inlay groove, and decorative stone is fixed in inlay groove. The split type ring rivet structure's inlay hard jewelry of the utility model can use larger processing cutter to process the installation groove in the hard main part, the cutter is not easy to damage, and the base body is not easy to crack, the processing difficulty is lower, the processing precision is high, then inlay component is fixed in the installation groove through the rivet ring rivet, can improve the processing efficiency, reduce production cost, inlay component can be freely replaced, improve inlay freedom, design can be more flexible, realize diversified inlay effect and decorative style, and inlay firmness is high.

The utility model discloses a kind of gas-insulated metal-enclosed electrical apparatus filling gas valves, including first adjusting assembly, including double-end pipe fitting, first moving part of the double-end pipe fitting inner wall being arranged and first sealing member of the first moving part outer wall being arranged;And, second adjusting assembly is connected with the side of the first adjusting assembly, including single-end pipe fitting, second moving part is slidably connected with the single-end pipe fitting inner wall, second sealing member is arranged in the second moving part outer wall.When first adjusting assembly leaks, first adjusting assembly can be directly screwed off, so that second moving part plugs single-end pipe fitting, so that the air tightness of equipment can be guaranteed when replacing first adjusting assembly, so as to reduce the influence on electrical equipment.

The utility model discloses a kind of iron hoop locking structure spades, including spade head, the central place of spade head is equipped with trousers, the outside of trousers is equipped with hoop ring, the front end of spade head is equipped with U ring, the rear end of spade head is equipped with blade ring, U ring and blade ring are fixedly installed on spade head mutually combined, by modularization design, the blade part of more easily wearing can be freely replaced, to save use cost;The design of blade ring three sides open blade can improve soil breaking efficiency, so that hard soil operation is more labor-saving;Anti-skid groove can be set on treading part to improve the stability of foot treading force;Hoop ring avoids the problem that spade handle is not combined stably due to the larger gap of traditional trousers back seam.

The utility model relates to the technical field of electric power pipeline field, an anti -aging electric power pipeline, including outer layer and connecting ring, the end of outer layer is connected with connecting ring fixedly, the outer wall of connecting ring is connected with fixed screw threadedly, the inner wall of fixed screw is connected with connecting strip threadedly, the outer wall of connecting strip is inlayed with connecting ring, the outer wall of connecting strip is connected with compression -resistant mechanism. Through and break the installation ring and form the gap and be put into the outer layer of electric power pipeline, and the both ends of arc plate are slipped into the circular groove of installation ring gradually, control screw rod and nut separate and install from installation ring, can arc plate carry out free replacement, need not special tool in the installation process, only need simple operation to complete the assembly, disassembly and assembly are simpler.

This invention relates to the field of electric spindle technology and discloses a cooling mechanism and method for the electric spindle of a permanent magnet synchronous motor. The mechanism includes a spindle housing with a coolant inlet pipe and a coolant outlet pipe. Inside the spindle housing are a steel cylinder and a cooling sleeve with cooling channels. A tail cap is installed at the tail end of the spindle housing, and a rotary joint is provided on the tail cap. A cooling assembly is installed inside the spindle housing. This invention, through the design of the cooling assembly, including a rear cooling chamber, a bushing channel, a stator ventilation area, a front bearing cooling channel, a water-cooled ring, a steel cylinder cooling channel, a motor water-cooled sleeve annular dual-flow cooling groove, and a rear seat cooling channel, achieves multi-directional cooling of key components such as the rear bearing, front bearing, and stator of the electric spindle.

The utility model relates to the technical field of pipeline machining equipment, in particular to an expansion repairing device for a communication pipeline. The expansion repairing device comprises a hydraulic oil cylinder and an expansion head. A detachable expansion head is arranged on the side, provided with the telescopic rod, of the hydraulic oil cylinder, and the inner diameter of the expansion head in the direction away from the hydraulic oil cylinder is gradually reduced. The telescopic rod can penetrate through the expansion head, and the diameter of the telescopic rod is in clearance fit with the end, with the maximum inner diameter, of the expansion head. The expansion head extends into the deformed communication pipeline, and when the hydraulic oil cylinder drives the telescopic rod to penetrate through the expansion head, the expansion head generates uniform radial deformation, so that the deformed communication pipeline is repaired.