54results about How to "Advanced and reliable performance" patented technology

The invention relates to a spring operating mechanism matched with a 126kV vacuum high-voltage circuit breaker, the invention designs the contour trajectory of a cam to achieve the best match of the output characteristics and the load characteristics; when in closing process, the speed at instant of touching is controlled in the reasonable range to effectively reduce the closing bounces, and the mechanism can also be ensured to overcome the reaction force of a contact spring at the end of the closing; the design of the size and the position of an oil drain hole on a wall of a buffer can allow the circuit breaker to ensure higher speed at instant of touching during the opening process to allow an arc-extinguishing chamber to rapidly enter the short arcing time, thus allowing the average speed to be maintained within a certain range, ensuring the long arcing time of the circuit breaker and further being conductive to the arc extinguishment; the spring operating mechanism can solve the problem of poor match of the output force of the mechanism in the past with the load characteristics of the vacuum circuit breaker, reasonably distribute energy to the overall motion process of the circuit breaker and reduce the opening and closing works of the mechanism.

The invention provides a rollover-type iron charging transport vehicle which is used for charging molten iron in an electric furnace. The rollover-type iron charging transport vehicle comprises a frame, a molten iron tank rotationally connected to the frame, a drive device connected to the frame, connected with the molten iron tank, and capable of driving the molten iron tank to roll over, and a drainage groove arranged on the frame, and provided with a flow-out end capable of stretching in the electric furnace from a lateral direction and with a flow-in end located in the lateral direction of the molten iron tank, wherein the molten iron in the molten iron tank can be poured in the flow-in end of the drainage groove through rollover. According to the rollover-type iron charging transport vehicle provided by the invention, rollover of the molten iron tank is driven through the drive device, the molten iron is poured from the molten iron tank, and injected in the electric furnace from the lateral direction of the electric furnace through the drainage groove, the molten iron directly contacts with waste steel in the electric furnace while being injected, and splashing of furnace water and molten steel is avoided; because a furnace cover is in a closed state, the amounts of smoke and dust released into the atmosphere are greatly reduced, and pollution is avoided; and meanwhile, because the furnace cover does not need to be opened, a smelting operation process cannot be interrupted, and the working efficiency of the electric furnace is increased.

The invention relates to a slide-valve vacuum pump suitable for a tile vacuum extruder, belongs to the technical field of vacuum pumps, is suitable for the industries of building materials, chemical engineering, medicines, electrons and ceramics as vacuum extraction equipment, and is especially suitable for the slide-valve vacuum pump used in the tile vacuum extruder. The slide-valve vacuum pump comprises an air inlet fine filter, a one-way check valve, a pump body, a one-piece slide bar and sliding sleeve, an eccentric wheel, a one-piece slide block, a main shaft, a belt pulley, a belt, a motor, an exhaust valve, a first exhaust oil-gas separation chamber, a second exhaust oil-gas separation chamber, a third exhaust oil-gas separation chamber, a pump oil cyclic cooling device and a base; the air inlet fine filter is arranged on a vacuum pump air inlet pipe on one side of the pump body through the one-way check valve; the air inlet fine filter comprises a shell, a fine filter filtering element, an air passing pipe, a cover board and a seal ring; and the one-way check valve comprises a valve body, a one-way check valve air inlet, a one-way check valve air outlet, a one-way check valve core, a valve core mounting base and a spring.

The invention discloses a built-in transmission device of a pedal electric power-assisted bicycle without manual speed regulation. The device comprises a pedal transmission mechanism, a motor transmission mechanism and a pedal moment induction mechanism. The motor transmission mechanism comprises a hollow output shaft of a hollow-shaft high-speed power-assisted motor, a motor planet wheel decelerator and a sprocket wheel shaft. The pedal transmission mechanism comprises a pedal central shaft, a central shaft planet wheel decelerator and a sprocket wheel shaft. The sprocket wheel shaft is rotatably arranged in the output shaft. The pedal central shaft is rotatably arranged in the shaft sleeve of the sprocket wheel shaft. The motor planet wheel decelerator is arranged at one side of the output shaft of the hollow-shaft high-speed power-assisted motor. The central shaft planet wheel decelerator is arranged at the other side of the hollow-shaft high-speed power-assisted motor. The device disclosed by the invention has the characteristics of being concise and intensive in structure, good and reliable in performance, good in process and the like. A motor power-assisted system and physical drive are organically linked but cannot be interfered with each other. The transmission efficiency is very high.

The invention discloses a rotary-vane efficient energy-saving environmental-friendly vacuum pump, relates to a rotary-vane vacuum pump for a tile vacuum-extruder, belongs to the technical field of vacuum pumps and is suitable for being used as vacuuming equipment for standby use in building material industry, chemical industry, medicine industry, electronic industry, ceramics industry and the like, especially suitable for the rotary-vane vacuum pump used for the tile vacuum-extruder. The rotary-vane efficient energy-saving vacuum pump comprises a gas-water separator, an air filter, a pump body stator, a rotator, rotary vanes, a vent valve assembly, a side-placed oil tank, an air-cooled oil-pumping cooler, a venting oil mist filter, a centrifugal fan, a housing, a frame and a motor, wherein the gas-water separator comprises a cylinder body, a clapboard, a netting filter net cylinder and a cone river diversion port; the air filter is provided with a filter cylinder body which is internally provided with an exhaust duct; the filter cylinder body is internally provided with a filter core assembly; and the centrifugal fan is arranged on a coupler, the housing is arranged on the outer sides of the pump body and the air-cooled oil-pumping cooler, so as to form an air-cooled oil-pumping cooler and a pump body cooling air duct.

The invention consists of: double speed and tunable DC motor and constant pressure long life carbon brush; planet wheel shift system; power one way automatic on-off system; power taking off excess on-off system; low and high speed excited machine and automatic switching control system. At riding, the feet power can drive the speed control ring gear to make forward and backward rotation and to make the planet speed control system at differential speed control, and that implements stepless acceleration and slowdown.

The invention provides a method for ensuring high sulfur yield and uniform distribution of the sulfur content during the electroslag remelting process of sulfur-bearing steel. The method comprises the following steps: an electroslag remelting process is adopted, the sulfur-bearing steel is used as a consumable electrode, returned slag and new remelted slag are used as electro slag, the moving of sulfur in the sulfur-bearing steel to the electro slag can be inhibited during the remelting process, and the loss of sulfur during the electroslag remelting process of the sulfur-bearing steel is reduced, so that the sulfur retaining purpose is achieved, wherein the returned slag is electro slag recovered after the electroslag remelting process of the sulfur-bearing steel. When the electro slag of the sulfur-bearing steel is remelted by the method, the fluctuation range of the sulfur content in an obtained steel ingot is controlled to be seven per mille, the sulfur retaining rate is controlled to be more than 84%, the sulfur retaining effect is good, the sulfur content in the steel ingot is uniformly distributed, the favorable and reliable performance of the sulfur-bearing steel is ensured, and the yield of the sulfur-bearing steel is improved.

The present invention relates to slope and plane concrete lining apparatus and especially distributor for slipform concrete lining machine. The present invention has the technological scheme that there is at least one screw distributor including motor, reducer, screw feeder supporting bearings. The motor, the reducer and one of the screw feeder supporting bearings are installed on two ends of the material bin; while the other screw feeder supporting bearing is installed on the front board of the material bin. The present invention has very low cost, simple structure, flexible use, convenient installation and detaching and high efficiency.

The invention discloses a pedal electric power-assisted bicycle with transmission integration and without manual speed regulation, comprising a frame, wheels, a handlebar, a pedal transmission mechanism and an electric transmission mechanism for driving the wheels, and a pedal torque sensing mechanism, wherein the controller of the pedal torque sensing mechanism is disposed on the handlebar; the pedal transmission mechanism comprises a pedal central shaft, a chain wheel shaft and a central shaft planetary gear speed redactor; the electric transmission mechanism comprises a high-speed power-assisted motor, a chain wheel shaft and a motor planetary gear speed redactor; a chain disc on the chain wheel shaft is connected with the flywheel of the rear wheel via a chain; the pedal transmission mechanism, the electric transmission mechanism and the pedal torque sensing mechanism are intensively formed to be a central transmission mechanism using the high-speed power-assisted motor as a main body; and the triangular support and the rear fork of the frame are connected to the shell of the high-speed power-assisted motor. The pedal electric power-assisted bicycle with transmission integration and without manual speed regulation disclosed by the invention simplifies the structure of transmission mechanism and enables the spatial installation position of transmission mechanism to be reduced and suitable for installation for transmission mechanism on the frame of traditional bicycle; and the pedal electric power-assisted bicycle with transmission integration and without manual speed regulation is good in universality.

The invention relates to a clean type solid fuel which is burnt in low temperature and low pressure. The fuel comprises the components of hydroxyl-terminated polybutadiene, ammonium perchlorate, ammonium nitrate, toluene diisocynate, nitro cotton, plasticizer, equalizer and potassic nitrate, and odor regulator and / or flame color regulator can also be added. The fuel has the advantages of strong combustion blaze, good blaze visibility, less burnt residue, clean burning, high burning heat value, smokelessness, innocuity, high wind resistance and high security; the fuel can be continuously and stably burnt particularly under the environmental condition of 0.02 MPa and minus 40 DEG C, and can not be put out in strong wind, heavy rain and heavy snow when being matched with a special burner; the solid fuel with good and reliable performance is provided for delivering a torch at the peaks of summits (including the Everest), and can be limitlessly used on the terrene; the fuel is particularly suitable for the field operation in extremely cold areas, and the portable and reliable solid fuel with high heat value is provided for wild lives, wild mountaineering, expeditions, heating, field training and signal setting off.

The invention discloses an automatic knife positioning system with dynamic running state display and timing control of a freezing microtome and four-point refrigeration, which comprises a case which has a freezing chamber arranged inside and four refrigerating points of a freezing table, a freezing head and a freezing knife, etc., and an automatic knife positioning distance detector is arranged at the leading edge of the freezing knife; software of the automatic knife positioning system includes a timing controlling program and a dynamic displaying program; the automatic knife positioning system has the functions including the control that the machine halt and startup interval lies in 5 minutes or more, the control that the complete machine automatically shuts down after running for 8 hours, the control that a compressor A automatically enters a resting state, the temperature setting of the refrigerating points, the temperature, illumination and ultraviolet disinfection control of the freezing table, the freezing chamber, the freezing head and the freezing knife, the automatic knife positioning and deviation calibration, and the countdown time display. The automatic knife positioning system has ingenious conception, reasonable design and dynamic hardware identification display of the complete machine, adopts the parts of excellent materials and famous foreign brands as well as precise processing and assembly of key parts, can be freely used after startup in any time, overcomes the disadvantages of large power consumption and long waiting time, has perfect, stable and reliable performance and easy operations, and is applicable to research departments and hospitals.

The invention provides a medical multi-temperature zone constant temperature controller which comprises a constant temperature control chip, a multi-channel semiconductor cooling sheet drive module, a temperature acquisition module, a temperature sound and light alarm module, a key input module, a temperature display module and a CAN bus communication interface. The multi-channel semiconductor cooling sheet drive module, the temperature acquisition module, the temperature sound and light alarm module, the key input module, the temperature display module and the CAN bus communication interface are respectively connected with the constant temperature control chip. The invention further provides a control method of the medical multi-temperature zone constant temperature controller. According to the invention, the medical multi-temperature zone constant temperature controller has the advantages of high integration degree, wide temperature control range and high temperature control precision; temperature can be separately controlled by four channels; a temperature control system of higher power can be formed through free combination; debugging and maintenance are simple; the controller is provided with a bus interface, so that multiple controllers can be combined for use; and the versatility is high.

The invention relates to a planet electromagnetic chopper stepless speed variator, as picture 1. Wherein, the front end cover 1, the frame 4, the speed reducing inner tooth ring 71, and the back end cover 8 form the sealing chamber, which contains the electromagnetic brake 2, the electromagnetic clutch 3, the tooth ring bearing 5, the planet differential speed adjusting system 6, the planet wheel speed reducing system 7 and the electric control system 9; the front end cover 1, the input bearing 64, the frame 4, the tooth ring bearing 5, the back end cover 8 and the output bearing 75 can confirm the concentricity of axle when inputting, outputting and speed-variable transmission; the electric control system 9 can control the impulse wave of electromagnetic force; the electromagnetic brake 2 and the electromagnetic clutch 3 can operate according to demands. The invention can realize stepless speed variable output.

The invention relates to a rotary-vane vacuum pump suitable for a tile vacuum extruder, which belongs to the technical field of vacuum pumps and is suitable for industries such as building materials, chemical engineering, medicines, electronics, ceramics and the like to be used as vacuumizing equipment and is especially suitable for being used in a tile vacuum extruder. The rotary-vane vacuum pump comprises an air inlet filter, a pump body stator, a rotor, a rotary vane, an exhaust valve assembly, a side-arranged oil tank, an exhaust oil mist filter, an oil temperature control system, a motorsupport seat, a motor and an electric control box, wherein the side-arranged oil tank is connected to the rear side of a pump body and is divided into an oil tank upper cavity and an oil tank lower cavity, the oil tank lower cavity is provided with an oil pumping filtering screen, and the oil tank upper cavity is provided with the exhaust oil mist filter; the pumping oil temperature control system comprises a pumping oil temperature sensor, an electronic temperature controller, an air-cooled pumping oil cooler and an electric heater additionally arranged in the oil tank; the air-cooled type pumping oil cooler comprises a pumping oil cooler, a fan and a motor; and the air inlet filter is provided with a vertical cylindrical cylinder.

The invention provides a passivating method for the front side and side walls of a discrete device chip. The method comprises: step 1), providing a chip wafer and cutting the chip wafer to form multiple cut channels; step 2), providing a screen printing plate which is provided with holes matched with the cut channel pattern of the chip wafer, wherein the screen printing plate and the chip wafer are aligned and fixed; and step 3), based on the screen printing plate, allowing a passivating material to go through the holes and then get attached to the side walls of the cut channels. According to the passivating method, with adoption of a solder resist ink spraying technology, in combination with screen printing plate pattern design for manufacturing, through UV curing, thermocuring and the like, the passivating protection of the front side and side walls of the discrete device chip, especially a SBD product is realized, short circuit caused by draining material during lead bonding of unpacked chip packaging of a chip can be prevented, side wall protection of an electronic chip can be realized well. Compared with a traditional discrete device manufacturing process, the method has the features of low price, stable process, excellent and reliable performance, short manufacturing period, flexible design and the like.

The invention discloses a sliding form concrete lining equipment, which comprises the following parts: walking system, bin frame structure of lifting adjustment device, distributing device on the bin and belt conveyor on the set, wherein the walking system and distributing device are activated by motor; the high frequency electric vibrated rod is placed in the bin. The invention can cut the concrete lining with the thickness ranged from 0.08 to 0.40 m, which can be used in different breadths of concrete lining through changing the assembly pattern.

The invention provides an anisotropic piezoelectric material and a preparing method thereof. The composition chemical formula is as follows: [(1-x) (0.7PbZrO3 - 0.3K0.5Bi0.5TiO3) - xPbTiO3] + yPbZnNb2O5, x = 0.25 - 0.30, y = 0.01 - 0.20. The preparing method comprises the following preparing steps: mixing materials by a mass molar in the formula, ball-grinding by a wet method, briquetting after drying and synthesizing; synthesizing blocks after coarse grinding, carrying out secondary wet ball grinding, and pelletizing polyvinyl alcohol after drying; feeding degummed biscuits in an aluminum oxide crucible and sintering into ceramic; carrying out electrode oil bath polarization on the ceramic to obtain the anisotropic piezoelectric material. The material has high anisotropism, the piezoelectric strain coefficient in the polarization direction is larger than the piezoelectric coefficient in the non-polar direction, and the isostatic pressing piezoelectric sensitivity is as high as 40*10<-3> V.m / N and much higher than that of a lead zirconate titanate piezoelectric material. The material ingredients are reasonable and are easy to sinter and polarize, and the material is particularly suitable for manufacturing high-sensitivity and high-resolution hydrophones.

The invention discloses a motor, a magnet ring magnetizing tool and a magnetizing method of the motor. The motor comprises a stator component, a rotor component, a front-end cover, a rear-end cover and a Hall component; the rotor component comprises a rotor shaft as well as rotor magnet poles and magnet rings which are sleeved on the rotor shaft; the magnet rings are located at the rear end of the rotor shaft and partially suspended to form a central positioning hole; the front-end cover is installed at the front end of the stator component; the rear-end cover is installed at the rear end of the stator component; a central penetrating hole and a circumferential positioning hole are formed on the rear-end cover; the Hall component is installed on the rear-end cover and provided with an assembling column; and the assembling column is matched in the circumferential positioning hole so as to position the Hall component in the circumferential direction of the stator component. The motor can guarantee the special position relation of the Hall component and the stator component in the circumferential direction of the stator component and has the advantages of excellent performance and reliability and the like.

The invention discloses a far-end unit packet control scheduler in a distributed indoor distribution 5G system and a scheduling coverage method. The control scheduler comprises a packet pilot frequency sending module, a pilot frequency measurement report processing module, a user packet management module and a scheduling module. The scheduling coverage method comprises the following steps: 1, grouping all far-end units in the 5G distributed system; 2, the central unit controls to send pilot signals specific to each far-end unit group on different far-end unit groups; 3, receiving a measurementreport of the user equipment for each pilot signal; 4, specifying a far-end unit group serving the user terminal; 5, allocating wireless resources to the user equipment according to the unit groups serving the user equipment. According to the invention, the problem of bottom noise uplift caused by uplink far-end unit signal combination and the problem of uplink and downlink asymmetry in a traditional 5G indoor distributed system are solved.

The invention discloses a remote intelligent dimming system. The system comprises a field controller, a connecting circuit, a power supply, a cloud server and a plurality of controlled illuminating lamps. The power supply, the field controller and the controlled illuminating lamps are all connected with the connecting circuit, the field controller is in communication connection with the cloud server through a public communication network, and the field controller comprises a carrier amplification coupling unit, a carrier modulation unit and a dimming initiating unit. Each controlled illuminating lamp comprises a carrier demodulation unit, a light source driving unit and a light source. The system has the advantage of long-distance dimming signal transmission, cancelling a communication cable, reducing the cost, and being simpler and more convenient in installation and debugging and excellent and reliable in performance.

The invention relates to a clean type solid fuel which is burnt in low temperature and low pressure. The fuel comprises the components of hydroxyl-terminated polybutadiene, ammonium perchlorate, ammonium nitrate, toluene diisocynate, nitro cotton, plasticizer, equalizer and potassic nitrate, and odor regulator and / or flame color regulator can also be added. The fuel has the advantages of strong combustion blaze, good blaze visibility, less burnt residue, clean burning, high burning heat value, smokelessness, innocuity, high wind resistance and high security; the fuel can be continuously and stably burnt particularly under the environmental condition of 0.02 MPa and minus 40 DEG C, and can not be put out in strong wind, heavy rain and heavy snow when being matched with a special burner; the solid fuel with good and reliable performance is provided for delivering a torch at the peaks of summits (including the Everest), and can be limitlessly used on the terrene; the fuel is particularlysuitable for the field operation in extremely cold areas, and the portable and reliable solid fuel with high heat value is provided for wild lives, wild mountaineering, expeditions, heating, field training and signal setting off.

The invention discloses a side rescue device for an automobile driving wheel, as shown in Figure 1. A mounting disk 71, a rope drum 72, a support shaft 73, a rope guide 74, a steel wire rope 75, a clutch pin 76, a support shaft groove 77 and a locating screw 78 form a wheel winch, and the wheel winch and a thick wheel bar 5 are connected to each driving wheel screw in different sizes through a connecting rod 2 and a fixing disk 3; the motive power of the driving wheel is output through the driving wheel screw 1, and the motive power of the driving wheel can have high and low actions on the road through a wheel bar leg 7 at intervals so as to rescue the automobile from troubles; moreover, the steel wire rope 75 can be freely released through the wheel winch, and after the clutch pin 76 is inserted, the driving wheel drives the wheel winch to rotate so as to pull the steel wire rope 75; and the rope guide 74 is mounted on the rope drum 72 by left side and right side, and can rotate around the rope drum 72 and guarantee that the steel wire rope 75 pulls the wheel out of troubles from multiple angles. The side rescue device is simple and practical.

The invention relates to an automobile wheel hub fan, and belongs to the field of mechanical fans applied to an automobile. The fan can be installed in an automobile wheel hub and can blow and cool the automobile wheel hub and a brake. The automobile wheel hub fan comprises a fan blade seat (1), a ring gear (2), a bearing (3), a solar wheel axle (4), a rear end cap (5), a counterweight (6), a mounting bar (7) and a wheel hub (8), wherein the wheel hub (8) is provided with the automobile wheel hub fan consisting of the fan blade seat (1), the ring gear (2), the bearing (3), the solar wheel axle (4) and the rear end cap (5), and the counterweight (6) is connected onto the periphery of the ring gear (2). When the wheel hub (8) rotates, the ring gear (2) can not rotate a half turn under the action of gravity of the counterweight (6), and then the solar wheel axle (4) accelerates and rotates relative to the wheel hub (8), and drives the fan blade seat (1) to accelerate and rotate to generate air which blows onto the wheel hub (8) and brake, thereby reducing the temperature of the automobile wheel hub and the brake.

The invention provides a stent conveying system. The stent conveying system comprises an inner pipe, an outer pipe and a guide rail lock assembly. A shifting piece assembly and a handle assembly sleeve the outer portion of the guide rail lock assembly. The tail end of the inner pipe is fixedly connected with the tail end of the guide rail lock assembly, and a rear release assembly and a flushing assembly are further arranged at the tail end of the guide rail lock assembly. The outer pipe is arranged at the front end of the inner pipe in a sleeving mode, and the tail end of the outer pipe is connected with a connecting rod in the shifting piece assembly through a detachable lock catch structure. The handle assembly sleeves the outer portion of the shifting piece assembly. Internal threads of a rotating handle in the handle assembly are meshed with external threads of a shifting piece in the shifting piece assembly. The stent conveying system is simple in structure and excellent and reliable in performance. In the release process of a covered stent, the covered stent can be stably and accurately released in the mode of combining rotary accurate release and sliding rapid release, andthe problem that due to the fact that the covered stent blocks blood flow for a long time, a blood vessel or an aneurysm is broken can be avoided; and meanwhile, the problem that the release accuracyof the stent is influenced by the wind bag effect can be avoided.

The invention discloses a rocker arm type tension leveler which comprises a power device, a transmission device connected with the power device, a plurality of rollers, an integrated basic framework, a base framework arranged above the integrated basic framework, and a steel structure bracket spaced from the basic framework with a certain distance, wherein the power device and the transmission device are arranged on the steel structure bracket far away from a cast blank. By the rocker arm type tension leveler, the shortcomings of the conventional five-roller tension leveler are overcome; the rocker arm type tension leveler is simple in structure, does not have an upper stander and is difficultly baked to deform, so that the quality of the cas blank can be guaranteed.

The invention relates to a slide valve type vacuum pump applicable to a tile vacuum extruder, belonging to the technical field of vacuum pumps. The vacuum pump can be used as a vacuumizing device in the industries of building materials, chemical engineering, medicine, electrnics, ceramics and the like, especially can be used as the slide-valve-type vacuum pump in the tile vacuum extruder. The slide-valve-type vacuum pump comprises an air intake filter, a pump body, a slide valve sleeve, an eccentric wheel, a conjoined slide block, a main shaft, a belt wheel, a belt, an electromotor, an exhaust valve, a side-sited oil tank, an exhaust oil mist filter, a pump oil circulation and oil temperature control device, a base seat and an electric control box; the air intake filter is installed at one side of the vacuum pump, and comprises an upper cylinder body, a lower cylinder body, a baffle plate, a coarse filter element and a fine filter element; the pump body is installed on the base seat; the pump body is provided with a pump cavity and the slide valve sleeve internally; the eccentric wheel is arranged in the slide valve sleeve and installed on the main shaft; the main shaft is installed on the pump body through a bearing; the end part of the main shaft at one side of the pump body is provided with a flywheel; and the end of the main shaft at the other side of the pump body is provided with the belt wheel; and the electromotor is installed on the base seat.

The invention relates to a waterproof button module, comprising a waterproof adhesive film in a pre-tightened state and isolating the touch assembly from the bottom case, the edge of the waterproof adhesive film is fixed at the position where the front case and the bottom case are connected, and , the touch assembly is supported on the waterproof adhesive film; in the button module of the present invention, the edge of the waterproof adhesive film is fixed at the position where the front case and the bottom case are connected, and the touch assembly and the bottom case can be connected through the waterproof adhesive film Completely isolated, even if there is a gap between the touch component and the casing, water will not enter the bottom casing through the waterproof film, thereby realizing the waterproof performance of the button module.

The invention relates to a planet electromagnetic chopper stepless speed variator, as picture 1. Wherein, the front end cover 1, the frame 4, the speed reducing inner tooth ring 71, and the back end cover 8 form the sealing chamber, which contains the electromagnetic brake 2, the electromagnetic clutch 3, the tooth ring bearing 5, the planet differential speed adjusting system 6, the planet wheel speed reducing system 7 and the electric control system 9; the front end cover 1, the input bearing 64, the frame 4, the tooth ring bearing 5, the back end cover 8 and the output bearing 75 can confirm the concentricity of axle when inputting, outputting and speed-variable transmission; the electric control system 9 can control the impulse wave of electromagnetic force; the electromagnetic brake 2 and the electromagnetic clutch 3 can operate according to demands. The invention can realize stepless speed variable output.

The invention provides a passivating method for the front side and side walls of a discrete device chip. The method comprises: step 1), providing a chip wafer and cutting the chip wafer to form multiple cut channels; step 2), providing a screen printing plate which is provided with holes matched with the cut channel pattern of the chip wafer, wherein the screen printing plate and the chip wafer are aligned and fixed; and step 3), based on the screen printing plate, allowing a passivating material to go through the holes and then get attached to the side walls of the cut channels. According to the passivating method, with adoption of a solder resist ink spraying technology, in combination with screen printing plate pattern design for manufacturing, through UV curing, thermocuring and the like, the passivating protection of the front side and side walls of the discrete device chip, especially a SBD product is realized, short circuit caused by draining material during lead bonding of unpacked chip packaging of a chip can be prevented, side wall protection of an electronic chip can be realized well. Compared with a traditional discrete device manufacturing process, the method has the features of low price, stable process, excellent and reliable performance, short manufacturing period, flexible design and the like.