47results about How to "Relieve contraction" patented technology

The invention discloses a stimulation device comprising: a belt (10) containing at least two vibration modules (5, 7, 9), wherein each of the at least two vibration modules (5, 7, 9) comprises: a pod(4) with a casing (6, 26) and a vibration pad (24) arranged within the casing (6, 26), and a vibration motor (20) with a flywheel (28) within the casing (6, 26), a control panel (15) operating said vibration motors (20) of the at least two vibration modules (5, 7, 9); wherein the vibration motor (20) is mounted to the vibration pad (24) via at least one elastic motor housing (22). The invention further discloses the use of such a device for treating hypoventilation and respiratory depression and a method of treating hypoventilation and respiratory depression by fastening a belt (10) to the abdomen of a user and operating the belt (10), wherein the at least two vibration modules are externally applied to an abdominal region of a user to stimulate the diaphragm, to enhance pulmonary function.

The invention discloses self-compaction concrete and a preparation method of the concrete. The concrete comprises the following ingredients in parts by mass: 158-166 parts of water, 245-256 parts of cement, 108-113 parts of pulverized fuel ash, 48-52 parts of mineral powder, 780-821 parts of sand, 985-1035 parts of stone and 6.2-6.6 parts of high-performance polycarboxylic acid water reducer. Theconcrete can achieve a self-compaction effect without vibration.

The invention discloses a wooden door leaf, which comprises a pool plate and a side frame. The pool plate is spliced ​​by a plurality of auxiliary plates, and the auxiliary plate includes a base plate in the shape of a right-angled trapezoid and a group plate in the shape of a parallelogram. The base plate and the set plate are spliced ​​into a rectangular pool plate, the base plate and the set plate or the set plate and the set plate are connected to form a splicing seam, and the base plate and the set plate or the set plate and the set plate on the upper and lower sides of the splicing seam A drying tank is set between the panels, the drying tank is hidden inside the pool plate, and a desiccant is arranged in the drying tank; the splicing seam is arranged obliquely, and the first and last ends of the splicing seam are arranged There is a threaded hole, the threaded hole runs through to the drying tank, the threaded hole is arranged on both sides of the drying tank, a metal ring is arranged in the threaded hole, and a plug is arranged in the metal ring. The wooden door leaf provided by the invention has the characteristics of good moisture-proof effect, small deformation and long service life.

The invention discloses a nitrogen self-doping carbon-coated silicon oxide negative electrode material and its preparation method and application. The preparation method of the nitrogen self-doping carbon-coated silicon oxide negative electrode material first passes trimethylbenzene in an alcohol aqueous solution The block copolymer is combined with dopamine or acrylate monomer, and then the pH is adjusted so that the dopamine / acrylate monomer self-polymerizes on the outer layer of trimethylbenzene, and the block copolymer is used as a buffer layer, and then the block is removed by alcohol washing Copolymer and trimethylbenzene, and then form a nitrogen self-doped carbon coating layer by high-temperature carbonization, and then put silicon dioxide into the coating layer in the form of a salt solution, and then obtain a nitrogen self-doped carbon coating layer by magnesia thermal reduction reaction Coated silicon negative electrode material, which has high theoretical specific capacity and good cycle stability, and has a certain degree of stretching elasticity, and can alleviate the volume expansion and contraction caused by silicon oxide when deintercalating lithium, effectively overcoming the silicon volume. Loss and chalking results from expansion and contraction.

The invention provides a vacuum arc extinguishing chamber contact, which includes an anode side contact piece, a cathode side contact piece, an anode side conductive rod, a cathode side conductive rod, an anode side cup holder, anode side spring No. No. 1 spring, No. 1 spring on the cathode side, and No. 2 spring on the cathode side. The invention adopts a spring with high temperature resistance, high strength and high elastic coefficient to achieve the effect of buffering and shock absorption, which is beneficial to the huge impact when the contact is opened and improves the overall mechanical strength. At the same time, springs are used to cleverly design the conversion between the normal working structure of the contact and the structure during breaking. During normal operation, the conductive rod contacts the contact piece, and the cross-sectional area through which the current flows increases, which is beneficial to reducing the temperature rise. Extend contact life. The rotation direction of the spring is clockwise (from the anode to the cathode), and the current during interruption can be used to generate a magnetic field, which strengthens the longitudinal magnetic field twice, alleviates arc contraction and is beneficial to arc extinguishing. The use of springs can effectively control the pressure between the dynamic and static contacts to achieve an effective balance between the increase in contact resistance due to too small pressure and the deformation caused by excessive pressure. The number of slots in the contact piece is increased, which further suppresses eddy currents and reduces residual magnetism. Compared with traditional cup-shaped longitudinal magnetic contacts, the vacuum arc extinguishing chamber contacts provided by the present invention have smaller temperature rise during rated operation, larger longitudinal magnetic field during breaking, higher breaking success rate, strong impact resistance, and small residual magnetism. It helps to further improve the breaking capacity of vacuum circuit breakers.

The invention provides a TiO2 and CuO composite porous material for a supercapacitor and a preparation method thereof, belonging to the technical field of electrode materials. The composite porous material has an ordered porous structure, and as the electrode material of the supercapacitor, can effectively reduce the expansion and contraction generated in the charging and discharging process, andkeep the structure stable. The preparation method of the composite porous material comprises the following steps: placing a slide in an ethanol solution of polystyrene microspheres, evaporating ethanol to form a polystyrene film by self-assembly; P123 is stirred and dissolved in ethanol, isopropyl titanate and hydrochloric acid are added, titanium tetrachloride is added dropwise, and cupric chloride dihydrate is added to obtain composite precursor solution of titanium dioxide and cupric oxide; The glass slide loaded with polystyrene film was inserted into the composite precursor solution obliquely, and the ethanol was evaporated to induce the self-assembly of the composite precursor on the polystyrene film. TiO2 and CuO composite porous materials were obtained by calcination in muffle furnace.