100results about How to "Simple production and assembly" patented technology

Using geometric characteristics of outer margin curves of two light spots at different distances along direction of beam transmission, the disclosed method obtains divergence angle of laser. Through rotational scanning detection, concentric placed two light detectors perpendicular to each other obtain outer margin curves. Multiple optical fibers are distributed on the said light detector evenly. The disclosed device is composed of drive power supply, cooling water platform, cooling water circulation system, 4D traveling platform, electrical motor set, drive, data acquisition module, and PC etc. The light-receiving module includes light detectors. The light-receiving module, data acquisition module, and PC are connected electrically. The invention solves issue of test error caused by regarding face radiation of area array laser as spot light source so as to avoid damaging and burning detector caused by too large power of laser. Advantages are: accurate and reliable.

The present invention provides nano particle size measuring method and device with scattered dynamic low-strength laser. The method includes: radiating liquid sample with monochromic laser beam of proper length to produce scattered light signal; collecting and transmitting to light signal with single-modular fiber with gradient refractive index; recording with single-photon counter module the scattered photons and converting into output electric pulse signal; and processing the signal in an autocorrelator. The device includes: light source, polarizer, focusing lens, two-layered refractive index sample matching pool, fiber, single-photon counter module, autocorrelator and computer. The present invention can measure nano particle size fast and accurately.

A fast measuring method and a device for the photosynthetic speed of delayed light generated by plant leaf under induction of visual light are disclosed. Said method incldues such steps as visual light induction of plant leaf for generating delayed light, converting the light to electric signal, A / D conversion, data processing to obtain light intensity, and searching a match in database to obtainits photosynthetic speed. Said device is composed of light exciting module, light receiving module, A / D converter, computer and data processing software.

The invention relates to a polarization light splitter and an LCOS liquid crystal stereographic projection system which uses the polarization light splitter. The polarization light splitter mainly comprises a non-light tight prism and polarization light splitting faces arranged on the prism, wherein, the polarization light splitter comprises three polarization light splitting faces and is combined into a whole by three or four prisms; thereby the polarization light splitter has the advantages of simple structure and good light utilization factor; moreover, unpolarized lights which pass through the polarization light splitter can be split into an S polarized light and a P polarized light which are relative high in purity. The LCOS liquid crystal stereographic projection of the invention adopts the polarization light splitter and two LCOS liquid crystal panels synchronously driven by image signals; before the S polarized light and the P polarized light are finally projected onto the projecting lens, the S polarized light and the P polarized light undergo three filtrations and two filtrations respectively, which contributes to the relatively high contrast; moreover, the separation between the S polarized light and the P polarized light which carry different image signals respectively is quite high. The projection system of the invention has the advantages of compact structure, and good image quality and stereo display effect.

A radial permanent magnet floating bearing, comprising: a horizontal shaft (2), a support bearing (4), and a radial permanent magnet floating bearing (3); the permanent magnet floating bearing (3) comprises a stator pull-push magnet (31) disposed on a stator casing (1) via a magnetic substrate (322), and a rotor pull-push magnet (32) disposed on the horizontal shaft (2) correspondingly via an annular magnetic substrate (322), having a radial gap and forming an axial pull-push magnetic circuit with the stator pull-push magnet (31); the rotor pull-push magnet (32) consists of two or more annular permanent magnets axially and closely attached, with magnetic poles alternately arranged in the axial direction; the stator pull-push magnet (31) consists of two or more annular permanent magnets axially and closely attached, with magnetic poles alternately arranged in the axial direction, disposed over the horizontal panel where the axle center of the horizontal shaft (2) is located, and being symmetrical about the perpendicular bisection plane of the horizontal axis. The bearing has a simple structure and greatly reduces energy consumption, without wear or bearing maintenance.

A tool for hob peeling rotating workpieces having pre-machined teeth comprises a gear-wheel shaped main body and tooth-shaped cutting inserts (1.2) which at the end face in the region of the tip circle are disposed on the main body. Each cutting insert comprises at least one cutting tooth. The cutting tooth forms a cutting edge (6) which runs at least along one of the flanks of the cutting tooth, and a cutting face and a clearance face. The cutting face along the cutting edge is provided with a cutting face chamfer (7) which in relation to the cutting face (5.5) runs so as to be inclined by a chamfer angle. The chamfer angle varies along the cutting edge. Moreover, the cutting edge is rounded by a radius.

A coextrusion adapter for an extrusion installation with extruders and a tool for producing a composite coextrusion structure of thermoplastic material. The coextrusion adapter has a central conduit with an end at an inlet side for connecting an extruder and an end at an outlet side for connecting the tool. The coextrusion adapter has at least one coextrusion conduit with an inlet end and an outlet end. A second extruder can be connected to the inlet end. At an end facing the outlet end the adjusting elements have a wedge-shape adjusting section with one wedge surface facing the central conduit and another wedge surface facing the outlet end of the coextrusion conduit. The adjusting section of the adjusting elements is pivotal around an axis extending over the width of the outlet end by the actuating drives. When an increase of the inside diameter of the respective transverse section of the outlet end occurs the corresponding transverse section of the central conduit is narrowed, and vice versa.

The invention relates to a multi-index combined detection marker protein paper chip, and belongs to the technical field of disease detection. The paper chip comprises two parts including a detection channel region and a water absorption region. The detection channel region is divided into hydrophilic detection channels between adjacent wax areas through wax spraying and printing of the rectangularwax areas on a nitrocellulose membrane. The detection channel is divided into a sample region, a reaction region and a color developing region, and is a place for reaction detection. The water absorption region is partially overlapped with a detection region through water absorption filter paper, provides chromatography power and absorbs excessive reactants. Maker protein in a sample reaches thereaction region through chromatography, and is combined with a specific antibody coated with colloidal gold; the color developing region is used for presenting a detection result in a red strip visible to naked eyes so that the paper chip can be suitable for daily family diagnosis. The paper chip has high accuracy and provides a simple and fast tool for joint detection of disease-related marker protein.

The invention provides a cover opening device of an electric pressure cooker and the electric pressure cooker. The cover opening device comprises a cover opening piece and a linkage sliding block, wherein the cover opening piece and the linkage sliding block are rotationally arranged on an inner cover of a cooker cover of the electric pressure cooker, and the rotating center of the cover opening piece and the rotating center of the linkage sliding block are not concentric; when the cover opening piece is rotated to a first setting position, the cover opening piece can drive an exhaust valve to be separated from an exhaust valve core for exhausting gas; the cover opening piece is connected with the linkage sliding block through the matching of a column body and a groove body, the linkage sliding block can be connected with a pot cover of the cooker cover of the electric pressure cooker, the cover opening piece can drive the linkage sliding block to rotate through the matching of the column body and the groove body during a process that the cover opening piece is rotated from the first setting position to a second setting position, and a pot tooth on the pot cover is separated from a pot tooth on a cooker body of the electric pressure cooker when the linkage sliding block drives the pot cover to rotate to the second setting position; the cover opening piece enables a cooker cover buckle to be separated from the cooker body when the cover opening piece is continuously rotated to a third setting position. According to the cover opening device and the electric pressure cooker, provided by the invention, the structure is simple, the manufacturing is easy, and the use is reliable.

A 3D (three-dimensional) protection device comprises a light source, a polarizing beam splitting device, two rotary liquid crystal display panels and a screen. The light source emits a beam, the polarizing beam splitting device is arranged on the path of the beam emitted by the light source and divides the beam into P polarized light and S polarized light, the polarization directions of the P polarized light and the S polarized light are perpendicular to each other, the S polarized light is reflected through the P polarized light, the beam paths of the P polarized light and the S polarized light are perpendicular to each other, the two rotary liquid crystal display panels are opposite in polarity, one rotary liquid crystal display panel is arranged on the beam path of the P polarized light, perpendicular to the beam path and used for reflecting the P polarized light into the S polarized light, the other rotary liquid crystal display panel is arranged on the beam path of the S polarized light and used for reflecting the S polarized light into the P polarized light, and the screen is used for imaging the received light. The invention aims to provide the 3D protection device and a 3D projection method, which can be used for achieving synchronism of optical distances, fine focusability, high pixel and brightness, compact structure and signal synchronization.

The invention relates to an LED ceiling lamp with a light guide plate. The LED ceiling lamp comprises a power shell, a power box cover, the light guide plate, a light and power source panel, an LED light source, a reflecting film and wiring terminals. The light guide plate is annular. The annular reflecting film is arranged on the lower surface of the light guide plate. The upper surface of the light guide plate is of a prism structure, and a concave point is formed in the lower surface of the light guide plate. The light and power source panel is arranged below the reflecting film and provided with the wiring terminals. The power shell and the power box cover are sequentially arranged above the light guide plate. The LED light source is arranged below the light guide plate. According to the LED ceiling lamp with the light guide plate of the structure, the point light source light emitting mode of a light source part is designed to be an area light source light emitting mode; the producing and assembling process is simplified; the light emitting effects that the cost is optimized, assembling is easy, and light source assemblies of one type can adapt to covers of different appearances are achieved; and the wider application range is achieved.

The invention discloses a control system capable of perceiving a posture state of a toothbrush. The control system is arranged in a handle of the electric toothbrush. The electric toothbrush comprises a vibration motor for driving a toothbrush head of the electric toothbrush to work. The control system comprises a gyroscope accelerometer sensor, an LED alarm lamp, a micro-loudspeaker, a control chip, a wireless data transmission module and a power module, wherein the gyroscope accelerometer sensor, the LED alarm lamp, the micro-loudspeaker, the power module, the wireless data transmission module and the vibration motor are all electrically connected with the control chip; and the control chip is in wireless data connection with an external display terminal through the wireless transmission module. The control system capable of perceiving the posture state of the toothbrush has the characteristics of good correction effect, visual correction function, small size and low cost.

The invention discloses a refrigerated container combined refrigeration house belonging to the technical field of a container. According to the combined refrigeration house, a sealing space is formed by splicing two container units with single-side wall boards, or a sealing space is formed by splicing the two container units with the single-side wall boards and at least one container unit without the side wall board; the container units without the lateral wall board are arranged between the container units with the single-side wall boards, connection devices are respectively connected between two adjacent top angle pieces (11) and two adjacent bottom angle piece (15) between the container units; a gap between the adjacent container units is 5-80mm; and thermal insulation sealing devices are respectively arranged in gaps among the two top beams (4), the two bottom beams (10) and two angle posts (21) of the adjacent container units. The refrigerated container combined refrigeration house provided by the invention has the advantages of being reasonable and simple in structure, easy in production assembly, good in intensity, economical and practical, and convenient to transport, manufacture, assemble and use, enlarging the application field of the refrigerated container, and having a high cost performance.

The invention relates to a positioning method and a positioning system for photographing devices. The positioning system comprises detection equipment and photographing equipment. The detection equipment comprises a first GPS (global positioning system) positioning module, an image acquisition through hole and a positioning fixing device. The photographing equipment comprises a camera, a storage device, a second GPS positioning module and an execution system. The execution system comprises a positioning information indication module, a position prompt module, an image acquisition display module and a positioning identification module, wherein the positioning information indication module is used for operating and invoking positioning information indicating diagrams, the position prompt module is used for extracting various position information, the image acquisition display module is used for acquiring the positioning information indicating diagrams and the various position information and displaying the same, and the positioning identification module is used for displaying relative position in the positioning information indicating diagrams according to the position of the camera and the image acquisition through hole. The photographing equipment is moved to enable the camera to be moved to the target position, and the positioning fixing device is used for fixing the photographing equipment. The method and the system are widely applied to positioning of portable biomedical detection equipment.

The invention discloses a pair of eye moistening spectacles which comprise a spectacles frame, lenses and soft rubber pads; the lenses are mounted in two mounting hole frame bodies of the spectacles frame, the soft rubber pads are mounted on the spectacles frame, a control and heating module is mounted in the spectacles frame, the control and heating module comprises heating assemblies and control units, the heating assemblies are arranged in the mounting hole frame bodies of the spectacles frame in a surrounding mode, and the heating assemblies are connected with the control units; the control and heating module further comprises temperature sensors for being arranged in the frame bodies, and the temperature sensors are connected with the control units. The eye moistening spectacles have the advantages that in the relatively closed space formed by the frame bodies and the soft rubber pads, a proper temperature can be provided, evaporation of tears is prevented, humidity of the peripheries of the eyes is increased, the physical moisturizing function is achieved, heat can be effectively transferred to the ocular surface glands, and a hot compress function is achieved, so that the dry environment of the eyes is effectively improved, and xerophthalmia is solved radically; besides, the eye moistening spectacles have the advantages of being convenient to use, easy to produce and assemble and the like.

The invention relates to a light-concentrating and heat-conducting LED assembled lamp body and an assembly process thereof, comprising a housing and an LED lamp body, the LED lamp body is arranged in the housing, the housing includes a base and a lampshade, and the lampshade and the base are connected by threads. The LED lamp body is set in the cavity of the base and is close to the bottom surface of the base; the assembly process is as follows: (1) place the LED lamp body in the lamp body fixture; (2) place the lamp body fixture in the cavity of the base (3) Clip the shell on the card slot and fix it with the lampshade. The invention has beneficial effects: all assembly processes of this product do not need to use welding, thereby avoiding the poisonous gas generated by welding from endangering the health of the operator. At the same time, this product has good heat dissipation, fast heat conduction, and good light-gathering ability to improve luminescence The advantage of efficiency. It also has the function of interconnecting and assembling, which can assemble lamps of various shapes, sizes, brightness and colors, and is very convenient for installation and maintenance.

The invention relates to an electromagnetic brake with a permanent magnet, comprising spring plates, a friction plate, a coil baffle, a stand, a coil lining, a coil, a magnetic steel framework, magnetic steel and an engine seat, wherein each spring plate is provided with a fixed hole; a plurality of spring plates are mounted at corresponding positions in the friction plates by hat pegs; the stand is sleeved on the engine seat; the coil is arranged between the engine seat and the stand; the coil lining is arranged on the inner wall of the coil; the coil baffle is arranged on the front end face of the coil; the magnetic steel framework is arranged between the inner end part of the stand and the engine seat; multiple pieces of magnetic steel are arranged in the magnetic steel framework; and a magnetic leakage channel is formed between the end parts of two adjacent pieces of magnetic steel and is bent or curved. The invention has the advantages of simple and compact structure, simple assembly process of products and favorable stability; the brake torque can be greatly increased by the improvement on the permanent magnetic steel; and the elastic service life can be prolonged by the reasonable design of a spring plate.

The invention discloses an engine tensioner. A plunger spring and a plunger are inserted into a plunger hole of a casing, a pawl is arranged on the casing through a pawl pin, the ratchet end of the pawl can be meshed with a tooth groove disposed on the plunger, the non-ratchet end of the pawl abuts against the pawl spring, the pawl spring is arranged in a pawl spring hole disposed on the casing, and a keeping pin used for limiting the rotating range of the pawl is arranged at the position close to the non-ratchet end of the pawl. When the non-ratchet end of the pawl abuts against the keeping pin, and the ratchet end of the pawl is meshed with the tooth groove disposed on the plunger so as to limit the plunger to move outwards. The keeping pin is inserted into a keeping pin hole of the casing, a positioning pin is inserted into an installation hole of the casing, the front end of the positioning pin penetrates out of the casing, and the back end of the positioning pin is fixedly connected with the keeping pin through a locking piece. The invention further discloses an engine with the tensioner. A locking structure is simple and fast, convenient to assemble and install without failure, accident damages caused by the fact that a locking assembly is pulled out in advance or is forgotten to be pulled out are totally avoided.

The invention relates to an integrated filer element seat which comprises a water inlet seat body and a water outlet seat body, wherein the water inlet seat body is connected with the water outlet seat body through a middle seat body or a plurality of middle seat bodies connected in series; both the water inlet seat body and the water outlet seat body are connected with the middle seat body through a connecting rod; interfaces for connecting a filter element of a water purifier are respectively formed in the water inlet seat body, the middle seat body and the water outlet seat body; a water outlet of the water inlet seat body is communicated with a water inlet of the middle seat body through a water conveying pipe; a water outlet of the middle seat body is communicated with a water inlet of the water outlet seat body through the water conveying pipe; a plug is arranged on one end of the water conveying pipe. The integrated filer element seat has the following benefits that the occupied space is small, the water is hard to leak, the production and the assembly are simple, one-time injection molding is realized through an injection mold, the problem of troublesome connection and assembly is solved, and a filtering effect is better as a magnet device additionally mounted on the water conveying pipe.

The invention discloses an ultra-thin LED lamp and a production technology thereof. The LED lamp is characterized in that a radiating lamp body, a rear cover plate, a diffusion plate and a light guide plate are included, the radiating lamp body is provided with a light-emitting face, the rear cover plate is connected and matched with the radiating lamp body, the diffusion plate and the light guide plate are sequentially arranged between the radiating lamp body and the rear cover plate from bottom to top, the light guide plate is sleeved with a flexible LED substrate, the periphery of the flexible LED substrate is evenly provided with LED lamp beads, the front side of the light guide plate is a highlight mirror corresponding to the diffusion plate, the back side of the light guide plate is an uneven grid, and the difference of convex and concave sections is 0.05-0.3 mm. The LED lamp is low in cost, a few of materials are used, production and assembly are easy, the light guide plate has various light reflection functions to meet various requirements of light distribution, LED light rays are fully used, light loss is reduced to the minimum, the whole LED lamp is low in weight, and the aim of miniaturization is achieved.

The invention discloses an adhesive-free type lipstick packaging pipe which comprises a bottom cover and a median bundle core arranged in the bottom cover, wherein the median bundle core comprises a median bundle and a median segment which are mutually fixed, a helix rotatably arranged in the median bundle in a penetrating manner, and a bead positioned in the median bundle and driven by the helix to axially slide, matched rotary linkage parts are arranged between the periphery of the helix and the inner wall of the bottom cover, matched axial drop-preventing parts are arranged between the periphery of the median bundle core and the inner wall of the bottom wall, the bottom cover comprises an inner bottom cover and an outer bottom cover, matched clamping structures are arranged between the inner bottom cover and the bottom of the outer bottom cover, and a welding groove matched with the upper end part of the outer bottom cover is formed in the inner bottom cover. According to the adhesive-free type lipstick packaging pipe, the median bundle core is connected with the inner bottom cover and the inner bottom cover is connected with the outer bottom cover by adopting a mechanical or welding manner, and an adhesive connection manner in the conventional process is replaced, so that the adhesive-free type lipstick packaging pipe is simply produced and assembled, and the manufacturing cost is reduced.

The invention relates to the technical field of endoscopes, in particular to an endoscope self-locking device and an endoscope. The self-locking device comprises a shell and a rotating handle, a firstlocking piece is fixedly arranged in the shell, a rotating shaft is rotatably connected in the first locking piece, and a locking mechanism used for being matched with the first locking piece is movably connected to the rotating shaft; the locking mechanism comprises a base, a push rod and a second locking piece, the base is fixedly connected to the shell, the interior of the base is connected tothe push rod through a thread, the push rod penetrates through the base and the shell, the push rod is used for pushing the second locking piece, the second locking piece is movably connected to therotating shaft, and the second locking piece moves in the axial direction of the rotating shaft; and the push rod controls the second locking piece to be matched with the first locking piece to realize self-locking. Self-locking can be achieved by the rotating handle, locking of an insertion tube is achieved, the imaging stability of the insertion tube is guaranteed, and meanwhile the fatigue strength of an operator is reduced.

The invention belongs to the technical field of tobacco controlling, and particular relates to a slice controlling device for a slicer. The slicer includes a material feeding device, a material pushing device, a cutter, a material reversing device, a rotation axis, a material stopping device, a material guiding device, a material transporting device and a laser distance measuring sensor. The material pushing device is arranged at the top of the material feeding device and the material pushing device can move against the material feeding device. The outer side of the material feeding device is provided with the material guiding device. The material transporting device operates below the head of the material guiding device. The cutter is arranged at the inclined top of the right end of the material feeding device. The right side of the cutter is provided with the material reversing device. The right side of the material reversing device is provided with the material stopping device. The right side of the material is provided with the laser distance measuring sensor. The rotation axis of the material feeding device is supported on a material feeding bracket. The material stopping device consists of a material stopping top panel and a material stopping side panel. The material stopping side panel is openly provided with a round hole. The right side of the round hole is provided with the laser distance measuring sensor. The device greatly improves the accuracy of the slice and the stability of the tobacco flake flow.

The invention relates to a sonochemistrical luminous tomography method for tumour, which is that after distributing of sonosensitizer in tumour group, generating active oxygen-derived free radicals by scanning point by point and sensitizing used focusing ultrasound; translating the active oxygen-derived free radicals generated during sonosensitizing process real time and directly by chemical luminous agents into photons and radiating out; based on that, simulating the imaging of tumour group by optics detection technique. The apparatus comprises ultrasound producing groupware, light receiving groupware, A / D converter, triaxiality scanning device and computer; wherein ultrasound producing groupware and triaxiality scanning device link to computer, light receiving groupware and A / D converter link to computer in turn. The invention combines strong penetrating ability of focusing ultrasound to body and the advantages of high sensitivity and intactness of optics imaging, brings no radioactive damage to organism.

The invention discloses a spring energy storage mechanism for a vacuum load switch. According to the spring energy storage mechanism for the vacuum load switch, the capability of resisting an electric impact force of a dynamic thermal stable current of the switch in the case of a short-circuit current in the switching-on operating process is greatly improved and meanwhile, the breakage factors that a vacuum arc extinguish chamber is burnt out by a large current or devices are damaged by a shaking force and the like are avoided. A switching-off tripping part of a switching mechanism is flexible and reliable, parts are simply matched and connected, the switching-on and switching-off time of the switch is shortened, the breaking performance of the switch is ensured stable, and the switch is maintenance-free. The energy storage mechanism has various advantages that the energy storage mechanism is simple, convenient and flexible to produce and assemble and has short assembling hours, stable quality, high technical content, strong practicality and the like. The assembly of production parts of a complete machine is modularized. The spring energy storage mechanism is structurally optimized as further as possible. The parts are reduced. The part design is optimized. The part purchasing cost is reduced. The production efficacy is improved. The production cost is reduced. The spring energy storage mechanism is ensured to be strongly approved and used by market users.

The invention discloses an extremely-simple type hydraulic rotary buffer. The extremely-simple type hydraulic rotary buffer only comprises a shaft sleeve, a rotating shaft, a gland and a sealing ring,the shaft sleeve is symmetrically provided with two separation ribs connected with a cavity bottom surface, and two arc-shaped table sections are arranged on the oil cavity wall on one sides of the two symmetric separation ribs; a convex ring and an inner shaft section of the rotating shaft sleeve an oil cavity, two convex strips are symmetrically arranged on the inner shaft section, each convexstrip is provided with an elastic flexible oil wing, and the flexible oil wings are separated from the oil cavity wall or are elastically pressed against the arc-shaped table sections in a contactingmode; the oil cavity is fixed to the oil cavity in a pressing connection mode, the convex ring sleeves a step hole in the inner end face of the gland, the inner side face and the inner end face of theconvex ring are flush with the top surfaces of the separation ribs in a flush manner, and the flexible oil wings make contact sliding fit with the inner end face; the shaft sleeve and the gland is sealed by the sealing ring, the flexible oil wings, the oil cavity wall, and the arc-shaped table sections form a one-way oil passing switch for controlling the rotating speed of the rotating shaft. Theextremely-simple type hydraulic rotary buffer is ingenious in design, can realize one-way damping rotation, automatic voltage regulation and overload protection functions, does not need to add othercomponents, and is simple and reliable in structure function and low in production and manufacturing cost.

The invention relates to a hydraulic system of an aerial operation truck with two folding booms. The hydraulic system is provided with an oil cylinder I, an oil cylinder II and a rotary motor, wherein the oil cylinder I is a lower boom variable-amplitude oil cylinder, the oil cylinder II is an upper boom variable-amplitude oil cylinder, and the rotary motor is a cycloid hydraulic motor. The hydraulic system is characterized in that the oil cylinder I is connected with a reversing valve I-A through a flow valve I, the oil cylinder II is connected with a reversing valve I-B through a flow valve II, the rotary motor is connected with a reversing valve III, the reversing valve II is simultaneously communicated with the reversing valve I-A, the reversing valve I-B and the reversing valve III, and is communicated with a hydraulic valve, the hydraulic pump is communicated with an oil tank, the oil tank is communicated with the hydraulic pump through an oil absorbing filter, the oil tank is communicated with the reversing valve III through an oil return filter, the oil cylinder I and the oil cylinder II are respectively communicated with atmosphere through pipelines, and a damping throttling plug is arranged between the reversing valve III and the rotary valve. The hydraulic system has the advantages that under the condition of low cost, the hydraulic system of a boom frame is stably and reliably controlled, and the problems of shaking, instability and large impact when the aerial working truck operates and controls the boom frame to lift are solved.

The invention provides a drive circuit suitable for a silicon controlled rectifier of a rectifier circuit of a frequency converter, and relates to the technical field of circuits. A silicon controlled rectifier control circuit can control the on and off of a diode according to the phase of an input alternating voltage, a control panel performs signal control on the silicon controlled rectifier control circuit through an SOFT control signal, and an R-phase circuit, an S-phase circuit and a T-phase circuit are is integrally controlled by the silicon controlled rectifier control circuit, so that a silicon controlled rectifier gate level receives pulse driving voltage before sine-wave voltage passes zero, and heating caused by great loss generated by wave generation at high reverse voltage is avoided; the silicon controlled rectifier control circuit is used for controlling the S-phase circuit, the R-phase circuit and the T-phase circuit, a rectification soft start loop is formed by adding a diode, and the silicon controlled rectifier controls the on and off of the diode according to the phase of the input AC voltage, so that the loss of the silicon controlled rectifier is reduced, the production and assembly process of the product is simplified, and the cost of the whole machine is reduced.