40results about How to "Increase logarithm" patented technology

The invention discloses a built-in clutch which comprises a mounting shaft, gears, a splined hub, lifting levers and a bidirectional synchronization ring. The gears are sleeved on the mounting shaft, the splined hub is connected with the mounting shaft, cavities are arranged on the gears, inner joint gear rings are arranged on the side walls of the cavities, a hollow shaft sleeve is arranged in the mounting shaft, a slot is formed in the shaft sleeve, one end of each lifting lever is inlaid in the splined hub, the other end of each lifting lever penetrates the shot of the shaft sleeve and is inserted into an inner cavity of the shaft sleeve, an outer gear ring of the splined hub is matched with the inner joint gear rings of the gears, and the bidirectional synchronization ring is arranged among the splined hub and the side walls of the inner cavities of the gears. The built-in clutch has the advantages that the built-in clutch and a gear shifting control mechanism of the built-in clutch are based on an existing parallel shaft type gear transmission, so that gears of the transmission can be closely arranged, the axial size of the transmission can be reduced, the volume of the transmission can be decreased, the transmission can be lightened, and the manufacturing cost can be lowered.

The invention discloses a method for increasing the torque of a magnetic sealing device. A cone coaxial type magnetic sealing device of the following structure is applied; the cone coaxial type magnetic sealing device comprises a rotating shaft, a driving rotor, a driven rotor, an isolation sleeve, outer permanent magnets and inner permanent magnets, wherein shaft holes are respectively formed in the middle parts of the driving rotor and the driven rotor; the inner wall of the driving rotor and the outer wall of the driven rotor are conical surfaces, and the driving rotor covers the driven rotor; the isolation sleeve is arranged between the driving rotor and the driven rotor and is in a conical shape, the inner and outer walls of the isolation sleeve are parallel to the inner wall of the driving rotor, and gaps are formed among the driving rotor, the driven rotor and the isolation sleeve; a plurality of annular grooves are formed in the inner wall of the driving rotor and the outer wall of the driven rotor at intervals in a one-to-one corresponding mode; the permanent magnets are installed in the annular grooves. According to the method, the driving rotor and the driven rotor are designed into conical shapes, the grooves are respectively formed in the driving rotor and the driven rotor, and the permanent magnets are installed in the grooves, so that the torque magnetic sealing is increased.

The invention provides a thermal resistance-type thin film thermopile-type transient heat flow meter and a manufacturing method. The heat flow meter comprises a ceramic substrate, and a positive thermocouple, a negative thermocouple, a thermocouple connection layer, an outer thermal resistance layer and an inner thermal resistance layer arranged on the ceramic substrate, wherein the positive thermocouple and the negative thermocouple are in butt joint via the thermocouple connection layer; the outer thermal resistance layer and the inner thermal resistance layer cover the positive thermocouple and the negative thermocouple; when an external environment applies heat flow in a vertical direction to the heat flow meter, the outer thermal resistance layer and the inner thermal resistance layer have different thicknesses, the positive thermocouple and the negative thermocouple are connected to form hot and cold junctions, a temperature difference exists between adjacent two hot and cold junctions, corresponding electric potential output exists according to Seebeck effects, and the output electric potential is related to the heat flow density. Transient measurement on the heat flow density can be realized, and the thermal resistance-type thin film thermopile-type transient heat flow meter has the advantages of simple structure, small size, few influences on a measured field, quick response speed, large measurement temperature range and high measurement precision.

The invention discloses a conformal preparation method for a thick-film heat flow meter, which belongs to the field of thick-film sensors, comprising: S1 prepares a groove at a part of a substrate to be measured, the groove is used to provide a place for preparing a thermal resistance layer, and S2 prepares a groove in the groove The thermal resistance layer is prepared in S3, the insulating layer is prepared in S3, the thermoelectric positive electrode, thermoelectric negative electrode and thermal junction are prepared on the insulating layer in S4 to form a thermopile pattern, and the surface protection layer is prepared in S5, which is used to improve the stability of the heat flow meter. In the present invention, laser micro cladding technology is used to conveniently and efficiently direct write and micro cladding of electronic paste, so as to prepare heat flow meters on the surface of various substrates, which has the advantages of simple process, no need for masks, short manufacturing cycle and low cost The advantages.

A continuous ionic adsorption and exchange device system comprises resin tanks and a porous distributing valve, wherein the porous distributing valve comprises a fixed valve array and a movable valve array. Each movable valve and each fixed valve are respectively provided with an upper port and a lower port, an inlet of each resin tank is communicated with the upper port of one fixed valve, and an outlet of each resin tank is communicated with the upper port of another fixed valve, the upper ports of the movable valves are in one-to-one butting design with the lower ports of the fixed valves in the working process, and the lower ports of the movable valves are communicated with each other or communicated with the outside. The continuous ionic adsorption and exchange device system is compact in device, simplified in system, reduced in pipeline and small in occupation area, overcomes the shortcomings of bias current phenomena easily occurring in the adsorption process, vacancy and wasteof partial resin, low using efficiency of resin, large using amount and serve waste of chemical agents in the desorption and regenerative process, large discharging amount of effluent, long operationperiod, large quantity of connection pipelines and valves, fussy operation and the like.

The invention relates to a swing pin chain which bears large torque and impact load, a continuously variable speed change device equipped with the swing pin chain, and a power machine equipped with the continuously variable speed change device. Through the specific setting of the mutual proportional relationship and shape of the chain links, chain plates, swing pins and other components of the swing pin chain, and at the same time through the specific setting of the matching parts of the swing pin chain and the continuously variable transmission device, the continuously variable transmission is improved. The variable speed performance increases the load capacity of the continuously variable transmission, making it more suitable for high-horsepower machinery, and achieves technical effects such as impact resistance and fatigue life improvement.

A light emitting diode (LED) chip electrode structure capable of promoting transverse current diffusion and with dual reflection surfaces relates to the technical field of production of an LED chip. The LED chip electrode structure comprises trapezoid structured electrode expansion bars which upwards and sequentially wrap the surface layer of a GaN layer, wherein each trapezoid structured electrode expansion bar comprises a Cr layer, a first Al layer, at least one pair of TiN / Pt layers, an Au layer, a second Al layer and a TiN outer layer. With the electrode structure disclosed by the invention, the transverse current diffusion can be increased, and an effect of multi-surface reflection of light can be achieved.

The invention relates to a high-fuel-efficiency internal combustion engine comprising an air cylinder, a piston and a push rod, wherein the piston is positioned into the air cylinder, the push rod is used for driving the piston to move in a reciprocating way. The internal combustion engine is characterized by also comprising a cam and a central shaft, pairs of peak-valley grooves are formed on the cam, the central shaft passes through the center of the cam and is connected with the cam, the cam and the push rod are mutually driven through the peak-valley grooves, and a torque is output by thecentral shaft. The cam is used for replacing a crank to reduce lost fuel efficiency generated by operating the crank, and one air cylinder can generate a plurality of explosion strokes when the cam is rotated once.

The invention relates to a bidirectional conjugate tooth profile design method for harmonic gear drive. The bidirectional conjugate tooth profile design method for harmonic gear drive comprises the steps of firstly, expressing a flexible wheel top-section convex tooth profile coordinate through a parameter equation, converting to a rigid wheel coordinate system, solving to obtain discrete point coordinates of a theorical conjugate concave tooth profile and a concave tooth profile of a flexible wheel top-section convex tooth profile, determining the working tooth depth of a rigid wheel tooth profile through least square fit, determining a fitted curve section to be a rigid wheel bottom-section concave tooth profile and a rigid wheel top-section concave tooth profile, and calculating to accomplish a tooth profile design of a rigid wheel; and then expressing a rigid wheel top-section convex tooth profile coordinate through a parameter equation, converting to a flexible wheel coordinate system, solving to obtain discrete point coordinates of a theorical concave conjugate tooth profile in a flexible wheel bottom-section range, determining the tooth depth of a flexible wheel through least square fit, determining a fitted curve to be a flexible wheel bottom-section concave tooth profile, and calculating to obtain a flexible wheel working tooth profile. According to the bidirectional conjugate tooth profile design method for harmonic gear drive provided by the invention, the flexible wheel tooth profile and the rigid wheel tooth profile with bi-conjugate and secondary-conjugate phenomena are directly obtained, so that a conjugate contact area and a meshing zone are increased, the tooth surface contact stress is reduced, and the drive accuracy of a harmonic reducer is improved.