9165results about How to "Achieve regulation" patented technology

The invention relates to a camera automatic regulating crack image acquisition system for a fatigue crack propagation test, which comprises a crack image imaging and acquiring system, a camera position regulating system and a computer processing and analysis control system, wherein the crack image imaging and acquiring system comprises a CCD (Charge Coupled Device) camera, a lens, a light source illuminating device, a camera mounting bracket and an image acquiring card; the CCD camera, the lens and the light source illuminating device are arranged on the camera mounting bracket to form a crack image imaging unit; the image acquiring card is connected with a computer; a camera position regulating device comprises a stepping motor, a camera motion positioning cloud deck, a motion controller and a stepping motor driver; and the computer processing and analysis control system comprise the computer and a camera automatic regulating image acquisition module in an ARM motion controller. The invention also provides a camera automatic regulating crack image acquisition method for the fatigue crack propagation test. According to the camera automatic regulating image acquisition device and method for fatigue crack propagation test provided by the invention, the full-automatic operation is adopted; the control accuracy is high; and the real-time performance is excellent; and the labor intensity is reduced.

The invention relates to a noninvasive radiotherapy system for a robot, and belongs to the medical equipment field. The noninvasive radiotherapy system for the robot consists of seven modules, i.e. a radiotherapy planning system, a three-dimensional numerical-control therapy bed, an automatic tracking system for a four-dimensional real-time image, a robot system, a radioactive source, an adjuvant therapy system and an integrated control system, wherein the automatic tracking system for the four-dimensional real-time image consists of a six-freedom-of-degree G-shaped arm real-time image system and an intelligent tracking system; the six-freedom-of-degree G-shaped arm real-time image system is formed by successively connecting a G-shaped arm, a G-shaped arm sliding rail, a G-shaped arm spindle, a G-shaped arm pitch shaft and a G-shaped arm sliding seat; an X ray source and an X ray dynamic flat panel detector are formed into one group, and two groups are correspondingly installed on the G-shaped arm; and the G-shaped arm sliding seat is installed in a rail (9). According to the noninvasive radiotherapy system for the robot, which is disclosed by the invention, the defects of unmatched projection time, time waste and low therapy precision in the prior art are overcome, the precise therapy of the whole body tumor can be carried out, and the cardiovascular disease therapy and the noninvasive regulation of the renal nerve disease can be carried out.

This invention relates to a double- cycle high efficient heat pipe heat exchanging system that can control the heat exchanging quantity. There are evaporator and condenser two types of heat exchangers. The number of each type is one or several that formed by connected in parallel. This system includes: condensate supplying and distributing system; gas-liquid two phases flowing and separating system; gaseous phase transmitting and distributing system, liquid phase collecting and storing system; heat exchanging quantity controlling system. The evaporator of heat pipe, condenser, gas-liquid separator, liquid storage, solution circulating pump, liquid distributor, the connecting pipeline and related controlling parts are connected together to form the double cycles controllable heat pipe system. The solution pump, liquid distributor, evaporator and gas-liquid separator are connected together to form independent working fluid cycle, which settle the problems that working fluid carrying capacity is not enough and liquid distribution is uneven.

The invention relates to a permanent-magnet type eddy current tuned mass damper which comprises a steel magnetic-conducting baseplate (10), wherein end plates (3) are respectively arranged at two ends of the baseplate (10). The permanent-magnet type eddy current tuned mass damper is characterized by also comprising a circular shaft (4) and a linear bearing seat (5), wherein two ends of the circular shaft (4) are respectively arranged on the corresponding end plates (3), and the linear bearing seat (5) is sleeved on the circular shaft (4) and can slide on the circular shaft (4); the lower part of the bearing seat (5) is connected with a mass block (6), and two ends of the mass block (6) are respectively connected with the corresponding end plates (3) through spiral springs (7); the lower part of the mass block (6) is connected with a permanent magnet (13), and a copper plate (12) is arranged below the permanent magnet (13) and connected with the baseplate (12) through a cushion block (11). By adopting an eddy current damping model with special design, the permanent-magnet type eddy current tuned mass damper realizes the damping adjustability of the damper in a larger range, realizes the complete separation between the system rigidity and the damper, and cancels the mechanical friction energy consumption and stress concentration elements, thereby avoiding the common TMD damage failure.

The invention provides an error test system and method for a digitized metering device. The error test system and method can meet requirements for whole error test and dissemination of the value of quantity of the digitized metering device in a semi-breaker wiring mode, and can simultaneously test and compare the whole error and the sum of a single error of an electronic transformer and a single error of a digitized electric energy meter by changing characteristic error influence quantity of the digitized metering device. The test system comprises the digitized metering device, a traditional standard current transformer, a three-phase electronic transformer calibrator, a three-phase standard digitized electric energy meter, a traditional three-phase standard electric energy meter and a three-phase test power supply used for outputting an electric load; the test method based on the test system compares and analyzes the whole error and the sum of single errors of dissemination of the value of the quantity in the digitized metering device by independently testing the whole error, the error of the electronic transformer and the error of the tested three-phase digitized electric energy meter, specific sources of the errors are determined, and operation and regulation are conducted according to actual working conditions.

The invention discloses an auto-coupling welding and packaging mechanical device of a coaxial-type optical transceiving device, which comprises a workbench, an aligning unit, a lifting unit, a propelling unit, a manual lower fixture, a welding unit, a swinging unit, an upper fixture, an equipment housing and a control button, wherein an aligning unit base platform, the propelling unit and a welding workbench are installed on an equipment workbench; the propelling unit comprises a left propelling device and a right propelling device which are distributed in an angle of 45 DEG around a rotating shaft of a Theta z r autorotation platform; the manual lower fixture is placed on the left propelling device; the lifting unit is installed on the Theta z rotating platform; the welding unit and a portal-type frame are installed on the welding workbench, and the welding unit comprises three welding devices which are uniformly disturbed in an angle of 120 DEG around the rotating shaft of the Theta z autorotation platform; the swinging unit is installed on the portal-type frame; a Z-axis automatic linear slipway is installed on a swinging plate of the swinging unit; the upper fixture is installed on the Z-axis automatic linear slipway, and can realize pitching actions by depending on the action of the swinging unit; the equipment housing is installed on the equipment workbench; and the control button is installed on the equipment housing. The auto-coupling welding and packaging mechanical device has the advantages of reasonable and ingenious structural design, strong extendibility, space economization, high degree of automation, convenience for control, simpleness in operation and short operation time, therefore the cost of products is low and the quality is stable; and the problems of coupling, aligning and welding of the coaxial-type optical transceiving device are effectively solved, and the requirements of an industrialized production line are satisfied.

The invention provides a method for controlling the reporting of a plurality of measured results in measurement, which comprises the following steps: a terminal measures a measured target according to measured configuration information sent by a network side; if a measured result of an event meets the reported condition, the measured result is stored; judging whether a delay timer is started or not, if not, starting the delay timer; after the stop of the delay timer, the terminal reports the stored measured result. The invention also provides a terminal for realizing the method. When a plurality of events are triggered, the terminal can effectively report a measured report, reduce a load brought to a network due to excessive measured reports and lead the network to make a more effective policy on mobile management.

The invention discloses a six-axis attitude adjusting platform for installation for a complete set of engines for aircraft engines. The six-axis attitude adjusting platform comprises an operation table, a Y-axis translation mechanism, a C-axis slewing mechanism, four sets of herringbone hinge mechanisms, a cradle type platform frame and an X-axis propelling mechanism. According to the six-axis attitude adjusting platform disclosed by the invention, improvement is performed based on a conventional multi-axis attitude adjusting platform, so that the adjustable freedom degree is increased, and adjusting of the position attitude in six space freedom degree directions of the engines (namely X-axis horizontal propelling, Y-axis horizontal moving, Z-axis vertical lifting, A-axis left-to-right pitching, B-axis front-to-rear pitching, and C-axle horizontal rotating) is realized. Through the adoption of the six-axis attitude adjusting platform disclosed by the invention, in the mounting process of the aircraft engines, the adjusting of the position attitude in six space freedom degree directions is realized; the adjustable freedom degree is high, so that the mounting attitude of each engine is accurate; and the adjusting of the position attitude in the six free degrees of each engine adopts a servo motor to perform digital controlled attitude adjusting, so that the attitude adjusting accuracy and the attitude efficiency are improved; and the mounting efficiency and the mounting quality of the aircraft engines are further improved.

The invention relates to a movable counterweight system used for engineering mechanical equipment, which comprises a counterweight, an information acquisition device, a computation module, a control module and an adjusting device, wherein the information acquisition device is used for acquiring working state information of the engineering mechanical equipment; the characteristic parameter information of the engineering mechanical equipment is stored in the computation module in advance, and the computation module computes the ideal counterweight position of the counterweight according to the working state information and the characteristic parameter information; the control module compares the ideal counterweight position with the practical counterweight position of the counterweight and outputs control signal; and the adjusting device receives the control signal output by the control module, and adjusts the counterweight to the ideal counterweight position. The invention further provides engineering mechanical equipment and a movable counterweight control method. Through the engineering mechanical equipment, the movable counterweight system and the control method, the adjustment of counterweight position can be realized, and the working stability and safety of the engineering mechanical equipment are improved.

The invention discloses a distributed type power supply zone branch circuit three-phase load current balance monitoring method and device and belongs to the field of power supply and distribution devices. At least one three-phase load current balance main controller is arranged, load current signals of each phase circuit in each branch loop are collected, according to the obtained load current signals of each phase circuit, the three-phase current unbalance rate or the mean value of the three-phase current unbalance rate of each branch loop is computed, and the unbalance situation of three-phase load current of each branch loop is judged. The magnitude of load current in each unit meter box of each branch loop is collected, and the phase of unit meter box load which needs to be adjusted is determined. According to the three-phase load current unbalance situation of a certain branch, a control instruction is issued to an automatic phase-changing switch in a unit meter box corresponding to the branch loop, converting of load phases is carried out, adjusting of three-phase load current balance of each branch loop on the low-voltage side of a distribution transformer is achieved, and the real balance of distribution transformer low-voltage side main loop three-phase load current is guaranteed.

The invention discloses a laser rust-removing device, which comprises a central controller, a laser, a working table controller, a working table, an acoustic sensor and a rust-removing head. The laser is guided into the cylindrical rust-removing head through a light guide pipe; a light outlet is vertical to the cylindrical metal inner wall; and the automatic control and precise positioning in the laser rust-removing process are realized by combining the acoustic sensor, the central controller and the working table. The laser rust-removing device solves the problem of removing rust on the cylindrical metal inner wall and other special surfaces.

The invention provides an image processing method, a mobile terminal and a computer readable storage medium. The method is applied to the mobile terminal, comprising: receiving a first input that a user slides on a target area when a first preview image is displayed on a shooting preview interface, the first input being used for adjusting a shooting field; and in response to the first input, displaying a second preview image in the shooting preview interface, the second preview image being: a preview image obtained after the shooting field is adjusted according to the operation direction of the first input based on the shooting field of the first preview image; wherein, the target area comprises a preset area in the shooting preview interface or a back touch area of the mobile terminal. Compared with the prior art in which post processing and correction of an image are required, the method can realize the adjustment of the shooting field in a single direction more easily.

The invention relates to a dynamic gas elastic foil bearing with stability and adaptive control functions, comprising a bearing casing, a plurality of bearing pads, an elastic foil, and a piezoelectric ceramics micro displacement actuator. The dynamic gas elastic foil bearing is characterized in that the bearing pads are uniformly distributed along the inner wall of the bearing casing; the bearing pads are welded with a bottom bump foil and one end of a top foil; the other end of the top foil is lapped over an adjacent top foil, wherein the piezoelectric ceramics micro displacement actuator with one end fixed on a set screw and the other end arranged on a jig is connected with two bearing pads; the piezoelectric ceramics micro displacement actuator is connected with a feedback controller PID; an input of the feedback controller PID is connected with an eddy current displacement sensor. The dynamic gas elastic foil bearing with stability and adaptive control functions has the advantages of strengthened equivalent rigidity and equivalent damping of the elastic foil, restrained vibration of rotor system, improved bearing capacity and stability of the bearing, reduced size and structure, increased control precision of displacement, and quickened response speed.

The invention relates to a full-automatic intermittent multi-specification carton boxing machine which comprises a machine frame, a carton opening system, a carton conveying system, a material conveying system, a material pushing device, a semi-finished carton cabin, a carton sealing device and a transmitting mechanism. The material conveying system the carton box conveying system synchronous drive and are partially overlapped, the carton opening device is distributed at the beginning end of a carton conveying chain, the carton conveying system and the carton opening device are arranged in a carton conveying cabin, the material pushing device is distributed above the overlapped portion between the material conveying system and the carton conveying system and is perpendicular to the carton conveying system, the semi-finished carton cabin is arranged on the carton conveying cabin and distributed above the carton opening system, and the carton sealing device is arranged on the carton conveying system. The full-automatic intermittent multi-specification carton boxing machine is simple in structure, low in manufacturing cost and good in generality and can meet the carton opening requirements of various-specification cartons by adjusting the carton opening device, the semi-finished carton cabin and the carton conveying system according to the sizes of different products.

The invention provides a method for adjusting screen display, which comprises the following steps: A, correspondingly storing a screen parameter inputted when a user adjusts the screen display and acquired environmental information beforehand; B, reading the stored screen parameter which corresponds to the environmental information according to the currently acquired environmental information; and C, adjusting the screen display according to the read screen parameter. The invention also provides a device for adjusting the screen display, which comprises an environmental information acquisition unit, an image analysis unit, a screen adjustment unit, a memory unit and a control unit. The invention can realize the adjustment of different screen displays according to different user settings.

The invention discloses a novel lower extremity exoskeleton rehabilitation training device and a training method; in accordance with problems on efficiently and safely recovering the walking capacity of lower extremities of a patient, enhancing the adaptability of the training device and other problems in a human lower extremity rehabilitation training process, the rehabilitation training device disclosed by the invention can achieve all-directional rehabilitation training with five freedom degrees of motion on the human lower extremities. The rehabilitation device is added with angle, displacement and pressure sensors, and by detecting related motion parameters of the patient, self-adaptive adjustment is achieved; and since lower extremity exoskeleton, width regulating and height regulating mechanisms and an anti-gravity treadmill are subjected to modular design, training intensity and amplitude can be regulated in accordance with the figure of the rehabilitation patient as well as a rehabilitation progress, so that adaptability is enhanced. By integrating the designed lower extremity exoskeleton on the anti-gravity treadmill, the comfort of the patient in the rehabilitation training is enhanced, and meanwhile, the effect of the rehabilitation training is improved as well.

The invention provides a zero-counterweight barycenter deploying method for a parallel tiling tank satellite. The method comprises the following steps: (1) preliminarily calculating a satellite barycenter position; (2) preliminarily calculating an adjustable scope of a barycenter; (3) after testing mass characteristics of the satellite, acquiring a measured value of the barycenter, analyzing and calculating the mass and position of a to-be-adjusted propellant according to the measured value, and causing the barycenter to approach to the original point; (4) performing propellant filling for the satellite according to a calculating result of the filling quantity of the propellant of each tank, controlling different filling quantities, and meanwhile, setting a work state after filling. The invention provides the new barycenter deploying method for a parallel tiling tank layout high-orbital satellite; under the condition of not increasing the total mass of the satellite, the original barycenter offset of the satellite is reduced, so that the barycenter variation of a satellite orbital transfer section is reduced, the disturbance torque is reduced, the safety of the satellite orbital transfer is ensured, the consumption of the propellant is reduced, and the service life of the satellite is prolonged.

The invention relates to an angular rate gyroscope which has the variable-thickness axisymmetric multi-curved surface fusion structural feature and takes an oscillator with a campaniform structure as a sensitive element. The angular rate gyroscope consists of the oscillator, an oscillator support structure, an airtight cover, a cylindrical outer frame and a system circuit, wherein the oscillator is made of a quartz material and is machined integrally for forming with a phi-shaped support rod; the upper and the lower ends of the support rod are respectively fixed to the top end of a support cover and the central position of a support base plate; a driving electrode and a vibration mode stable electrode are attached to the support cover; a detection electrode is arranged in the inner space of the campaniform oscillator; the airtight cover and the cylindrical outer frame are sequentially arranged outside a support structure; and the system circuit is positioned between the bottom of the airtight cover and the outer frame. The angular rate gyroscope is suitable for the application field of measuring medium and low-precision angular rate in the high dynamic environment, and the oscillator with the campaniform structure has the high quality factors and high overload capacity resistance and has the characteristics of hold facility during power failure, simple structure, suitability for batch production and the like.

The invention provides a method and a device for constructing a map. The method and the device solve the technical problem that the existing SLAM scheme is low in map construction accuracy in the prior art. The method comprises the following steps: in the process of controlling the movement of an AGV (automatic guided vehicle), a laser radar is used for carrying out scanning and ranging on the surrounding environment of the AGV at different positions, and obtaining a point cloud data frame containing the obstacle information, wherein the obstacle information comprises a plurality of obstacle points and the relative position information of each obstacle point relative to the AGV; when the number of scanned point cloud data frames reaches a preset frame number N, generating a local map on the basis of the scanned N point cloud data frames; when it is determined that the AGV repeatedly passes the same position, calculating a difference value between a first local map generated when the AGV first passes the same position and a second local map generated when the AGV passes the same position for the first time; optimizing all generated local maps according to the difference value between the first local map and the second local map.

An electric heating device is adapted to be used in particular as an auxiliary electric heating for motor vehicles. The heating device comprises a plurality of PTC heating elements arranged in a plane of said heating device. The PTC heating elements are in electric contact with contact sheets for supplying current thereto and in thermal contact with radiator elements for transferring the heat produced to an air current to be heated. According to the present invention, the PTC heating elements arranged in this plane are adapted to be controlled separately in at least two groups.

A femoral prosthesis has a stem part and a head part, in which the stem part has a body section for location in the femur of a patient and a neck section including a trunion or spigot. The head part has a bearing surface formed as part of a sphere and a reverse side. The bearing surface has a polar axis extending through a center of the sphere formed thereby. A bore is provided in the reverse side adapted to receive the spigot wherein the bore comprise a bore axis, and in which the bore axis is oblique to the polar axis.

The invention discloses an active-passive combined vibration isolator based on positive-stiffness and negative-stiffness parallel connection. The active-passive combined vibration isolator based on positive-stiffness and negative-stiffness parallel connection comprises a basic platform (10), a load-bearing platform (30), a passive vibration isolation unit and an active vibration isolation unit, wherein the passive vibration isolation unit is provided with a positive-stiffness air spring (20) and a magnetic negative-stiffness mechanism (28) with adjustable negative stiffness in the first direction, so that the inherent frequency in the first direction is decreased, and the passive vibration isolation unit is provided with a stiffness-adjustable positive-stiffness leaf spring and a negative-stiffness inverted pendulum in the second direction, so that the inherent frequency in the second direction is decreased; the active vibration isolation unit is arranged at the outer side of the passive vibration isolation unit, the upper end of the active vibration isolation unit is linked with the load-bearing platform (30), and the lower end of the active vibration isolation unit is linked with the basic platform (10); and the active vibration isolation unit comprises displacement sensors, speed sensors, a proportional pressure valve and a voice coil motor, and the voice coil motor is used for fine adjustment of the load-bearing platform, so that vibration is further isolated. The active-passive combined vibration isolator based on positive-stiffness and negative-stiffness parallel connection has high bearing capacity, and active and passive vibration isolation of two degrees of freedom is achieved at the same time.

The invention discloses an electronic welcome board, an electronic white board and an electronic rostrum. The electronic welcome board, the electronic white board and the electronic rostrum each comprise a touch displayer, a base, a lifting control mechanism, a pitching control mechanism and a rotating mechanism, wherein the lifting control mechanism is mounted on the base, driven by a first motor and used for controlling the touch displayer to ascend and descend; the pitching control mechanism is connected between the upper end of the lifting control mechanism and the rotating mechanism, driven by a second motor and used for controlling the touch displayer to pitch; the rotating mechanism is mounted on the reverse side of the touch displayer and used for controlling the touch displayer to rotate with the center of the plane of its own as a rotating shaft. According to the electronic welcome board, the electronic white board and the electronic rostrum, lifting adjustment, pitching adjustment and rotating adjustment of the displayers can be achieved simultaneously, and multi-view display of screens and operation and use at different heights can be realized conveniently and quickly.

The invention discloses a low-temperature BOG (Boil off Gas) gas cold energy recovering device. A low-temperature BOG gas inlet pipe (1) is sequentially connected with a heater (2), a heat exchanger (3) and a buffering tank (4) in one path, and is connected with a pipeline through a branched pipe A (7) in another path, wherein the pipeline connects the heater (2) with the heat exchanger (3); a buffering tank (4) is connected with a compressor (5); and the compressor (5) is sequentially connected with a booster BOG gas flowing channel and a booster BOG gas outlet pipe (6) of the heat exchanger (3) in one path, and is connected with the booster BOG gas outlet pipe (6) through a branched pipe B (8) in another path. The invention also discloses a cold energy recovering process. The cold energy recovering process has the beneficial effects that the gas obtained by cooling and compressing under the cold energy of the low-temperature BOG gas and the regeneration / cold blowing air before entering a heavy hydrocarbon separator are utilized, the cold and heat process mediums are fully utilized for exchanging heat, so that the energy is saved, and the consumption is reduced; and the pipeline is reasonable and simple in design; the applicable scope is wide; and the convenience is provided for conditioning.

The application discloses a shooting parameter regulation method and device and a terminal, and relates to the field of human-computer interaction. The method is applied to the terminal with a foldingdisplay screen. The folding display screen has a folding first screen region and a folding second screen region. The method comprises the steps of: controlling the first screen region to display a shooting preview interface, wherein the shooting preview interface is an image obtained by shooting according to shooting parameters; monitoring a folding angle between the first screen region and the second screen region; and according to changes of the folding angle, regulating the shooting parameters. According to the application, by changing the folding angle between the first screen region andthe second screen region, regulation on the shooting parameters is implemented; and compared to the prior art in which a plurality of touch operations are adopted to carry out regulation on controls displayed on the folding display screen, changing of the folding angle can be completed only by few user operations, and normal display of the shooting preview image cannot be influenced, so that human-computer interaction efficiency is improved.

The invention relates to a volume control method and system for a TV. The volume control method comprises the following steps: A, collecting environment background sound including the sound given out by the TV, as well as communication sound, on the phone side when a call is answered; and B, adjusting the volume of the TV according to the volume of the collected environment background sound and that of the communication sound. The system provided by the invention comprises a call / hang-up signal detection unit, a sound acquisition unit, a volume control unit and a control unit, can more flexibly control the TV volume when the phone rings, and can adjust the TV volume according to the volume of the collected environment background sound and that of the communication sound.

The invention discloses a load positioning device for a structural test. The device consists of a positioning block, a bottom plate, retaining blocks, an anti-overturn screw, adjusting screws and locknuts. The device is connected and fixed with a steel member or a steel embedded piece of a concrete member through the bottom plate; the positioning block is connected with a jack, is arranged in an area enclosed by the retaining blocks of the surface of the bottom plate, and moves longitudinally and transversely by screwing the adjusting screws; the anti-overturn screw passes through slots on the transverse retaining blocks, and then is anchored into a threaded hole which is formed on the side surfaces of the positioning block so as to prevent the positioning block from being separated from the bottom plate, so that the positioning device is applicable to vertical loading working conditions, and can also be applied to horizontal loading working conditions; scale marks are marked on the upper surface of the bottom plate, and are used for improving the adjusting speed and the adjusting accuracy; and the quantity of the longitudinal adjusting screws is increased and decreased according to the displacement adjustment range. The whole device has a clear principle, can be simply manufactured, is convenient to use, is high in load positioning accuracy, and can be applied to civil engineering teaching and scientific research tests.

The invention relates to a numerical-control electric frame truck for airplane engine mounting and belongs to the technical field of assembly automation. The numerical-control electric frame truck is characterized by comprising a multi-shaft posture adjusting platform (1), a posture adjusting platform frame (2), a long-shaft feed mechanism (3), a truck body frame (4), left and right rotation mechanisms (5), an auxiliary support mechanism (6), hydraulic support legs (7), a driving wheel system (8), a truck body underframe (9), steering wheel systems (10), a driving cab (11), a hydraulic control system and a servo control system. Posture of five shafts is driven and adjusted by a servo motor, and posture of the rest one shaft is manually adjusted. Travelling of the frame truck is driven by the mode of electric vehicle. The numerical-control electric frame truck has the advantages that positioning accuracy is high, maneuverability is good, stability is high, engine mounting efficiency is improved, and labor intensity of operators is reduced. Besides, the numerical-control electric frame truck is applicable to automatic mounting operation of heavy complicated shaft parts requiring multi-shaft posture adjustment.

The invention relates to a raft plate basic high-precision overall pre-embedded large-diameter bolt group structure. The structure is characterized in that the structure comprises an upper-layer positioning plate, a lower-layer positioning plate, a bottom support seat, pre-embedded foundation bolts, connecting bolts, fine-adjustment bolts and leveling bolts; unit positioning steel plates are connected and assembled through node plates and the bolts to respectively form the upper- and lower-layer positioning plates, the pre-embedded foundation bolts are disposed between the upper- and lower-layer positioning plates, the pre-embedded foundation bolts and the upper-layer positioning plate are connected through the fine-adjustment bolts, the pre-embedded foundation bolts is in anchor connection with the lower-layer positioning plate; and the leveling bolts are disposed between the lower-layer positioning plate and the bottom support seat to perform connection, and the bottom support seat and a concrete cushion are connected through the pre-embedded bolts. The bolt group structure can perform three-dimensional dynamic adjustments on the pre-embedded bolts, ensures accuracy of center coordinates and scale heights of the bolts, achieves high-precision pre-embedment of a bolt group, and has a good economic technical benefit. The invention further provides a construction method for the raft plate basic high-precision overall pre-embedded large-diameter bolt group structure.