7results about How to "Guaranteed bending performance" patented technology

The invention relates to the technical field of medical flexible lenses, and discloses a 360-degree bendable medical flexible lens cannula which comprises an insertion part and an operation part, a flaring ring is arranged on the side, away from the insertion part, of the operation part, two pull wires are arranged in the insertion part and the operation part, the pull wires are arranged in the insertion part and the operation part in a penetrating mode, and the flaring ring is arranged on the side, away from the operation part, of the operation part. The bending angle of the far end of the insertion part is changed under the driving of the operation part; the insertion part consists of a lining layer, a supporting layer and a coating layer, and is sequentially divided into a far-end insertion part, a middle-section insertion part and a near-end insertion part in the length direction; a wheel shaft used for pulling the pull wire and a hand wheel arranged outside the wheel shaft in a sleeving mode are arranged in the operation part. According to the medical flexible lens cannula, the hand wheel rotates and draws the two traction lines which are arranged in a penetrating mode, so that the far end of the insertion part is bent and deformed in at least two perpendicular directions, and the problem that the clinical operation flexibility is insufficient due to the fact that most traditional medical flexible lens cannulas adopt one-way traction is solved.

This utility model discloses a heat-insulating pre-embedded channel component. The heat-insulating pre-embedded channel component includes a channel steel and an anchor fixedly connected by welding. The anchor includes a sheet-like substrate with a rectangular notch on its front side for embedding into the channel steel. The front end face of the sheet-like substrate is flush with the front end face of the channel steel. The front end face of the channel steel is covered with a heat-insulating layer. A horizontally arranged strip-shaped protrusion is provided on the lower side of the sheet-like substrate, and a concave notch is provided on the upper side of the sheet-like substrate. The longitudinal length of the area of ​​the sheet-like substrate in front of the concave notch is greater than the longitudinal length of the area of ​​the sheet-like substrate in rear of the concave notch. This utility model optimizes the structure of the pre-embedded channel component by adding a heat-insulating layer, thereby integrating heat insulation into the pre-embedded channel component and achieving the effect of thermal break heat transfer. This utility model achieves pull-out resistance in the pre-embedded channel component and ensures bending resistance in the anchor.

The invention provides a track body capable of ensuring the flexibility of the track body and preventing the up-and-down vibration of the rollers as much as possible when the rollers cross the protruding portions of the core bones. The track body is provided with core bones (10) embedded at substantially equal intervals in the track body (9) and rolling paths (12, 13) for the rollers arranged on both sides in the track width direction of the track body (9) on the side opposite the ground contact surface. The track body is provided with protruding portions (24-27) protruding from each core bone (10) to both sides in the track rotation direction and supporting each rolling path (12, 13) on both sides in the track rotation direction of each core bone (10). At least the tip end portions of each protruding portion (24-27) of each core bone (10) corresponding to each rolling path (12, 13) are arranged offset from each other in the track width direction within the width of each rolling path (12, 13). The tip end of the protruding portion (25) of one core bone (10) and the tip end of the protruding portion (26) of the other core bone (10) are arranged close to or overlapping each other in the track rotation direction.

The ablation device and tube assembly comprises an inner tube and a sheath tube arranged outside the inner tube in a sleeving mode, the inner tube communicates with a liquid supply device, and the liquid supply device is used for providing cooling liquid for the inner tube; the ablation unit is arranged on the far-end side of the inner tube in a sleeving mode, ablation electrodes distributed annularly are arranged at the far end of the ablation unit, and the ablation electrodes are used for being attached to the inner wall of the targeted tissue and releasing ablation energy; the collecting unit is connected with the far end of the inner tube and axially spaced on the far end side of the ablation unit, spraying holes used for spraying cooling liquid to the ablation electrode are formed in the portion, between the ablation unit and the collecting unit, of the inner tube, and the collecting unit is used for collecting the sprayed cooling liquid. In the ablation process, the cooling liquid is recycled while the ablation electrode is cooled, and the possibility of other diseases caused by the fact that the cooling liquid enters human body targeted tissue is reduced.

This utility model relates to the field of oilfield surface gathering and transportation pipelines, and particularly to a heated flexible composite pipe for oilfield gathering and transportation. It includes a composite flexible pipe, an installation box, and a joint insulation sleeve. A photovoltaic panel is fixedly installed at the front end of the installation box. An energy storage module is fixedly installed on the left side inside the installation box, and an intelligent control module is fixedly installed on the right side inside the installation box. A heating module and a monitoring module are fixedly installed inside the installation box next to the intelligent control module. A connecting ring is fixedly installed on the surface of the composite flexible pipe. This utility model significantly improves the comprehensive performance of the intelligent fiber-reinforced insulated heated flexible composite pipe through an innovative multi-layer composite structure design and an intelligent temperature control and heating monitoring system. The integrated intelligent system monitors the pipeline status in real time and provides timely warnings of potential problems, achieving efficient, safe, and reliable pipeline operation. It integrates high performance, efficient heating, excellent insulation, and intelligent management.

The invention discloses low-iron-loss non-oriented electrical steel for an electric vehicle motor and a processing method thereof, and relates to the technical field of non-oriented electrical steel, and the low-iron-loss non-oriented electrical steel comprises the following components in percentage by weight: 3.0-3.8% of Si, 0.25-0.35% of Als (% of Si), 0.40-0.55% of Mn (% of Si), less than or equal to 0.1% of P, less than or equal to 0.2% of N, less than or equal to 0.003% of C, less than or equal to 0.004% of C + Ti, less than or equal to 0.02% of S, and the balance of Fe and inevitable impurity elements. Through the gradient structure design of fine equiaxed grains on the surface layer and thick equiaxed grains on the core part, the high and low frequency working conditions of the electric vehicle driving motor are accurately matched. Under low frequency, the magnetic hysteresis loss is obviously reduced by coarse grains at the core part; under high frequency, surface layer fine grains improve resistivity by utilizing skin effect, eddy current loss is effectively inhibited, iron loss P1.5 / 50 is less than or equal to 2.35 W / kg, P1.0 / 400 is less than or equal to 14.00 W / kg, and P1.0 / 1000 is less than or equal to 38.0 W / kg, a cold rolling process adopts different-diameter rolling core design, and a gradient energy storage and grain structure can be formed through dynamic matching of the roller diameter of an upper working roller and the reduction rate of the current pass without additional nitriding and other complex processes.