10results about How to "Improve normal use" patented technology

The utility model discloses a TBM (Tunnel Boring Machine) high-voltage cable recovery device which comprises a roller frame, a bottom plate is arranged on the lower surface of the roller frame, fixing structures are symmetrically and fixedly connected to the upper surface of the bottom plate, the bottom plate is connected with the roller frame through the fixing structures, a groove is formed in the outer wall of a roller, and circular plates are symmetrically and fixedly connected to the side walls of the roller. And the other side of the circular plate is in clearance fit with the inner side wall of the rotating roller frame. A groove is formed in the side wall of the rotating roller, the groove can be attached to a cable, the cable can be wound conveniently, meanwhile, circular plates are arranged on the two sides for shielding, the circular plates are designed to be large in specification, the TBM high-voltage cable can be wrapped on the outer wall of the rotating roller, the TBM high-voltage cable is prevented from being wound to the gap in the winding process, the orderly winding process is carried out while the safety of the TBM high-voltage cable is guaranteed, and the TBM high-voltage cable winding efficiency is improved. Abrasion is reduced to prolong the service life of the cable, the use efficiency and the working performance of the TBM are improved, and the quality, the service life and the working safety of the cable are ensured.

The invention relates to a solar cell and a preparation method thereof, and the method comprises the steps: preparing a first electrode layer on a substrate, forming a first groove in the first electrode layer, and enabling the first electrode layer to be a transparent layer; a photoelectric conversion unit is prepared on the first electrode layer, a second groove is formed in the photoelectric conversion unit, the first groove is filled with the photoelectric conversion unit, the photoelectric conversion unit comprises a first functional layer and a photoelectric conversion layer, and the first functional layer is located between the photoelectric conversion layer and the first electrode layer; preparing an isolation layer on the photoelectric conversion unit, and arranging a third groove on the isolation layer; a second electrode layer is prepared on the isolation layer, a fourth groove is formed in the second electrode layer, and the third groove is filled with the second electrode layer; according to the invention, after the second electrode layer is prepared, the second electrode layer and the photoelectric conversion layer are separated by the isolation layer, thereby effectively preventing the halogen element in the photoelectric conversion layer from corroding the second electrode layer, prolonging the service life of the solar cell, and improving the working performance of the solar cell.

The present invention discloses an LED flash control circuit and control method capable of detecting water ingress and egress, comprising a power conversion circuit electrically connected to a power source, a single-chip computer system electrically connected to the power conversion circuit, a water ingress and egress detection circuit and a power control circuit, the water ingress and egress detection circuit electrically connected to the single-chip computer system, the single-chip computer system electrically connected to the power control circuit, the power control circuit electrically connected to the light detection circuit, and also comprising a light detection circuit electrically connected to the single-chip computer system, an LED control circuit and a flash frequency setting circuit. The control circuit disclosed in the present invention has the advantages of simple circuit structure, low cost, long effective working time, adjustable LED flash frequency, high reliability, etc. The control method disclosed in the present invention can enable the control circuit to stably and reliably identify water ingress and egress status, thereby extending the service life and effective working time of the equipment.

The utility model discloses an automatic lubricating device for motorcycle chain, including oil storage tank, top adjusting unit, vacuum valve, pipeline and oil outlet device, the oil storage tank is equipped with the feeding opening, the top adjusting unit sets up at the top of oil storage tank, and it contains rotatable adjusting part, the pipeline flows from the oil storage tank into the oil outlet device, the bottom of oil storage tank is equipped with the inclined flow guide surface, can guide lubricating oil smooth flow to the oil outlet channel, the oil storage tank still includes user operation device, vacuum device, distributor oil pipe and valve device, the automatic lubricating device for motorcycle chain, the inclined flow guide surface of oil tank bottom can guide lubricating oil smooth flow to the oil outlet channel, and cooperate rotatable adjusting part of top adjusting unit and the scale mark on its surface, can accurate control oil outlet channel cross -section area, and then realize accurate regulation to the oil discharge capacity, ensure that motorcycle chain obtains sustained, appropriate lubrication, and the service life of chain is improved and the working performance.

The application relates to the technical field of graphene thermal interface material, and discloses a graphene TIM film which is arranged as an elastic layer and a heat-conducting layer along the thickness direction, wherein the graphene TIM film is obtained through chemical reduction, drying treatment and heat treatment of a graphene oxide film, the transient compressive stress F1 of the graphene TIM film is less than or equal to 8 psi, the static compressive stress F2 of the graphene TIM film is less than or equal to 5 psi, and the in-plane thermal conductivity of the graphene TIM film is 60-100 W / (m.K); a hydrazine hydrate solution is used as a foaming agent in the chemical reduction step, the concentration of the hydrazine hydrate solution is 6%-12%, when the ratio of the spraying amount of the hydrazine hydrate solution to the mass of the graphene oxide film is 0.35-3.05, and the areal density of the graphene oxide film is controlled to be 100 g / m2-115 g / m2, the thickness difference A between a graphene foaming film and the graphene TIM film is less than 100 mu m, and the graphene foaming film refers to an intermediate obtained through chemical reduction and drying treatment of the graphene oxide. The graphene TIM film with controllable thickness and good in-plane thermal conductivity is obtained by means of process control.

The utility model relates to a pressing and unfolding device of a satellite antenna, which does not need an independent locking and releasing mechanism. Comprising the steps that a flexible antenna is arranged on the side face, facing a solar panel, of a satellite body; when the solar panel is in a locked state, the flexible antenna is bent and arranged between the satellite body and the solar panel and is in a compressed state; when the solar panel is unfolded, the flexible antenna is unfolded along with the solar panel, the compressed state is converted into the natural state, the flexible antenna is smoothly unfolded, an additional locking and releasing mechanism is not needed in the whole process, the manufacturing and maintenance cost is reduced, and the risk of task failure caused by complex mechanism faults is reduced.

The invention discloses a heat dissipation and cooling method for an automobile fuel cell. The heat dissipation and cooling method comprises the following steps: S1, arranging a cooling liquid circulation pipeline around an automobile fuel cell stack; s2, a cooling liquid pump is arranged in the cooling liquid circulation pipeline; s3, radiating fins are arranged in the cooling liquid circulation pipeline; s4, a cooling fan is arranged around the cooling fins, and the cooling efficiency is improved; s5, arranging a temperature sensor on the fuel cell stack, and monitoring the temperature of the fuel cell stack in real time; and S6, the temperature sensor is connected with a controller, and the controller receives a temperature signal sent by the temperature sensor and controls the working states of the cooling liquid pump and the cooling fan according to the temperature signal. According to the heat dissipation and cooling method for the automobile fuel cell, through the synergistic effect of liquid cooling and air cooling, heat generated by the automobile fuel cell can be quickly dissipated and cooled, the working temperature of the automobile fuel cell is effectively reduced, the service life of the automobile fuel cell is prolonged, the working performance of the automobile fuel cell is improved, and the use requirements of users are met.

The invention discloses a numerical control gear grinding machine for high-precision gear machining, and relates to the technical field of numerical control gear grinding machines, the numerical control gear grinding machine for high-precision gear machining comprises a workbench, a gear connecting seat, a grading grinding mechanism, a feeding mechanism, a linear reciprocating driving part and the like, the lifting plate controls rack position switching through a micro motor, a second turbine worm self-locking speed reducer and a screw rod; in the aspect of high-precision graded grinding, through unique design, rough, medium and accurate grinding processes of tooth grooves are achieved, the grinding amount and precision are precisely controlled, the size, shape precision and surface roughness of the tooth grooves are improved, the tooth surface waviness and tooth profile errors are reduced, the gear transmission stability is enhanced, vibration noise is reduced, and the service life is prolonged; the racks are switched and matched efficiently, multiple procedures are completed on the same equipment, the carrying and clamping frequency is reduced, and the machining efficiency and precision are stabilized.

The invention discloses a cleaning device which comprises a floor brush assembly, a cleaning assembly and a control assembly, the floor brush assembly comprises a floor brush shell, and the floor brush shell is provided with a fan cavity and an air inlet communicating with the fan cavity; the sewage tank is arranged on the upper side of the floor brush shell and detachably connected with the floor brush shell, a sewage cavity is defined in the inner side of the sewage tank, and the air inlet is located in the outer side of the sewage tank and communicates with the sewage cavity. According to the cleaning device, the air inlet is located in the outer side of the sewage tank and communicates with the sewage cavity, normal work of the cleaning device can be guaranteed, meanwhile, the situation that sewage dripped from the sewage tank enters the fan through the air inlet, and consequently the fan breaks down and is damaged can be effectively avoided, and therefore the service life of the fan can be prolonged, and the working performance of the fan can be improved.

The invention belongs to the technical field of laser welding, and particularly discloses a laser welding tool for ball valve production, the laser welding tool for ball valve production comprises a box body, a guide rail is arranged in the box body, a laser welding device is arranged on the guide rail, and the laser welding device comprises a laser welding head arranged on one side of the guide rail and used for welding. The angle of the second nozzle is adjusted through the driving structure, when a complex curved surface welding seam is welded, the fitting degree of the rear dragging air curtain can be guaranteed, and the situation that when different areas of the curved surface welding seam are welded, airflow dead angles occur, the welding seam is still in contact with air, and oxidation discoloration is caused is prevented; the bottom of the first nozzle can be protected and shielded, the probability that air holes in the bottom of the first nozzle are blocked by metal splashes generated during ball valve welding is reduced, the first nozzle is prevented from being collided and affecting use, and then the service life of the first nozzle is prolonged, and the working effect of the first nozzle is improved.