85results about How to "Easy to standardize design" patented technology

The invention relates to a banded transportation junction formed by paralleling parallel elevated road stations and elevated railway stations, belonging to the technical field of railway station construction and aiming at solving the problem of inconvenience brought about for people by the conditions that the stations of various transport means of a large-scale integrated transportation junction are excessively concentrated, a scale is excessively huge, and transport is separated from commerce. The parallel elevated road stations are arranged parallel to one or more than one elevated railway station at short distances to form the banded transport hub; stop stations of island platforms of the parallel elevated road stations correspond to entrances / exits of the elevated railway stations, and passengers can take buses which are convenient for positive-direction and reverse-direction transfer on parallel elevated roads to reach and leave the entrances / exits of elevated railway stations on which the passengers need to take; and when the parallel elevated road stations are parallel to the elevated railway stations in an overlapping way, the parallel elevated road stations are positioned below the elevated railway stations.

The invention relates to a splicable flange plate of a bridge. In the invention, one side of the splicable flange plate is provided with a secondary casting cast-in-situ wet joint section; reserved connecting reinforcing steel bars conforming to the structure are respectively arranged at the side of an advanced prefabricated flange and above the flange; and moreover, transverse reinforcing steel bars (vertical to the spanning direction of the bridge) at the upper edge and the lower edge in the splicable flange plate both adopt stressed thick reinforcing steel bars to ensure that the structure can simultaneously bear positive and negative bending moments. The invention establishes a foundation for the design and construction standardization of the splicing and broadening reformation of the bridge, simplifies complicated bridge designs and defines complicated stressing modes. The total cost of the splicable flange plate is greatly reduced, and the social benefit is obviously increased. After the splicable flange plate is applied to the construction of interchange bridges constructed in stages or bridges which are designed by modules and simultaneously constructed, fully-prefabricated splicing can be realized, and the construction schedule is accelerated; the splicable flange plate can be used for guaranteeing the using functions and the integral coordination of a main bridge and is convenient for continuous construction; and the splicable flange plate provides great adjustment leeway for subsequent design optimization and also provides a technical support for upgrading and reforming.

The invention relates to a high-voltage direct-current transmission converter valve control device and a converter valve, and belongs to the high-voltage direct-current transmission technology field. An information collection unit is arranged in a converter valve system additionally, and information of all the converter valve monitoring modules is gathered and processed through the information collection unit, and then is uploaded to a pole control system. A received control command sent by the pole control system is subjected to copy and expansion and then is sent to each monitoring module, and consistency and reliability of command sending of the pole control system are ensured. Information interaction between valve control and pole control is achieved through the information collection unit, valve control and pole control interfaces are simplified, the valve control information processing function is determined, thus the valve control system function is independent relatively, and valve control system standard design and modularized expansion are convenient.

The invention relates to a household solar water heater with optical electromechanical integration, which belongs to the field of solar energy utilization devices and solves the problem of applicability of a household split solar water heater. The household solar water heater comprises a basic structure of the system-wide press-resistance household split solar water heater, a heat collector, a water storage tank (5) with a built-in heat exchange device (6) and a heat conductive working medium and a circulation system thereof, as well as a photovoltaic power supply (16) and a photovoltaic pump(7) driven by the photovoltaic power supply (16) which are used for forced circulation of the heat conductive working medium and form a three-in-one structure with the heat collector, and matching circuits thereof. The household solar water heater has the advantages that the household solar water heater overcomes the deficiencies of the ordinary solar water heater and the conventional household split solar water heater, improves, enriches, ensures and expands the advantages of the two; the three-in-one structure can carry out light-heat conversion and photoelectric conversion simultaneously and synchronously, and supplement collected heat while carrying out the photoelectric conversion; the automatic intelligent control of the forced circulation is safe, reliable, economic, practical and strong in applicability; and the household solar water heater facilitates standard design and mass production, is matched with the corresponding architectural design for construction and installation,is particularly applicable to multi-storey and high-rise residential buildings in cities and can meet the demands of a large number of residents.

The invention discloses an interface hermetic packaging method for an electronic circuit module. By adoption of the interface hermetic packaging method, hermetic packaging problems of high-frequency sockets, high and low frequency electric connectors and cylinder heads or sunk screws frequently used in engineering can be solved. According to the following technical scheme, the interface hermetic packaging method is achieved by comprising the steps that according to assembly interfaces of connector assemblies and fasteners in the electronic circuit module, a high-frequency socket, insulators and a soldering ring corresponding to the high-frequency socket are firstly mounted; soldering rings are fixed to corresponding preset soldering ring holes; a sunk screw and a shape memory alloy ring are separately assembled to corresponding assembly interfaces, a soldering curve meeting requirements of the devices at the same time is set in a vacuum soldering furnace, powerful contraction generated by the heated shape memory alloy ring in the soldering process squeezes a cavity and an annular wall reserved at the interface of the sunk screw, and the high-frequency socket, a radio frequency electric connector, a feed through connector and a coaxial connector in the microwave and millimeter wave electronic circuit module are integrally packaged into the cavity through the sunk screw.

The invention relates to an implementation method for separating a display system from an image processing system and a TV. The method is characterized in that an image and voice frequency processing system and a power supply source of the TV are separated from the TV and arranged in an installing box body, and the image and voice frequency processing system and the power supply source are connected with the display system of the TV through a high-speed differential transmission line. According to the method, an existing TV system is divided into two parts, the two parts are connected in a butt joint mode through the high-speed differential transmission line, the size of the TV can be reduced, the two parts are easy to replace, and the defect that the whole machine is eliminated on account of backwardness of the image processing module technology before the service life of a Panel of an existing TV ends is overcome.

The invention relates to a flexible parallel connection device suitable for an energy storage battery. An independent capacitor is added to a battery pack string, and flexible adjustment of the voltage of the battery pack string is realized through the control of an isolated DC / DC converter to the independent capacitor, and flexible parallel connection of different battery pack strings in an energy storage system is achieved, the flexible parallel connection device can be applied to the energy storage system adopting a new battery and a echelon utilization battery, and different brands or different specifications of lithium ion batteries can be adopted in different groups of strings working in parallel; the simple and efficient serial-parallel implementation problem of the battery pack string in the energy storage system is solved; meanwhile, the use mode of the echelon utilization battery is taken into consideration.

The invention relates to a photovoltaic-driven household split flat-plate type solar water heater which belongs to the field of solar energy utilization devices and solves the problems of system-widepress-resistance and forced circulation. The photovoltaic-driven household split flat-plate type solar water heater adopts a flat-plate type heat collector (1) which directly constitutes a forced water circulation system with a water storage tank (10) through a photovoltaic pump (11) which is driven by a photovoltaic power supply (12), and the photovoltaic power supply (12), the photovoltaic pump(11) and the flat-plate type heat collector (1) are arranged on a rack respectively or in a three-in-one manner. The photovoltaic-driven household split flat-plate type solar water heater has the advantages of good heat collection effect, less heat loss, rapid startup temperature increase, system-wide press-resistance, smooth operation, reliability, long service life, ability of maximizing the utilization of solar energy resources, synchronous light-heat conversion and photoelectric conversion, automatic intelligent control of forced water circulation, simple structure, ability of saving energy and resources, economy, practicality and strong applicability, thereby being particularly applicable to multi-storey and high-rise residential buildings in cities, facilitating standard design and manufacture and being easy to be matched with the corresponding architectural design for construction and installation.

The invention discloses a mobile terminal WIFI antenna system, a control method and a mobile terminal. The mobile terminal WIFI antenna system comprises a built-in antenna arranged in the mobile terminal, a signal intensity detection circuit and a radio frequency change-over switch which are respectively connected with the built-in antenna, and an external antenna which is electrically connected with the radio frequency change-over switch, wherein the radio frequency change-over switch is connected with the signal intensity detection circuit; and the radio frequency change-over switch selectsand switches a WIFI antenna of the mobile terminal into an external antenna according to the signal intensity received by the built-in antenna and detected by the signal intensity detection circuit when the signal intensity is smaller than preset intensity. According to the embodiment of the invention, the external module or the rear shell of the existing mobile terminal is shared, and the antennaradio frequency switch is added and the main radio frequency circuit is connected through a coupled feeding or direct contact method, so that the WIFI antenna function is realized, and the antenna space is saved, and the wireless performance of the mobile terminal in a weak signal environment is improved.

The invention relates to a mortise and tenon joint and bolt hybrid assembling type steel structure beam-column joint which comprises a steel structure beam, a steel structure column and a beam-columnjoint body. The steel structure beam and the steel structure column are connected together through the beam-column joint. The beam-column joint comprises an embedment mortise arranged at the flange end of the beam, an embedment groove body fixedly formed in the surface of the steel structure column, a web connecting plate and an additional connecting plate. The embedment mortise and the embedmentgroove body are in mortise and tenon joint connection. The web connecting plate, a beam web and the additional connecting plate are fixedly connected together through bolts. The beam-column joint is reasonable in structure, definite in force transmission, simple in installation process, safe, reliable, free of welding on site, free of damage to paint coatings, free for paint supplementing on site,high in speed and capable of saving materials and labor cost, the beam-column rigid connection is realized, and the construction period can be shortened by 15-25% compared with a site welding steel structure beam-column joint; no outward-extending cantilever beam sections are arranged on the column, loading and transporting are facilitated, the transport cost can be reduced by 20-30%; the construction cost is lower after standardized production is adopted.

The invention discloses a method for remotely controlling a terminal. The method is applied to a remote control system, wherein the remote control system comprises a remote controller, a receiver and a terminal. The method comprises the following steps: the remote controller is used for sending remote control signals to a receiver in a 2.4GHZ wireless radio frequency manner; the receiver is used for converting the remote control signals into data of a corresponding format after receiving the remote control signals, wherein the corresponding format is a standard USB HID keyboard mouse format or a standard infrared NEC format; and the receiver is used for sending the data of the corresponding format to a terminal, and the terminal is used for carrying out corresponding operations after receiving the data of the corresponding format. The invention also relates to a device for implementing the method. The method and the device for remotely controlling the terminal have the beneficial effects that the standardized design and production of products can be facilitated, the resources are saved, the management complexity is reduced, the cost is reduced, the universality of the products is improved, the remote control is long in distance, is non-directional and is capable of transmitting obstruction objects, and the method and the device are convenient to use and excellent in user experience.

The invention provides a novel drive clutch self-priming device mainly applied to lifting of medium liquid. The drive clutch self-priming device is technically characterized in that a double-shaft motor is adopted, each of the front and rear ends of the motor is provided with one shaft, the front shaft is connected with a centrifugal pump, a rear shaft is connected with a vacuumizing device through a clutch, an outlet of the centrifugal pump is provided with an outlet connection pipe fitting which is connected with an outlet self-priming valve and a clutch separation pipeline, and the clutch separation pipeline is connected with a clutch separation device which is connected with the clutch. The drive clutch self-priming device has the advantages that the self-priming device and the centrifugal pump are driven by one motor or diesel engine, no electric control system is needed, and accordingly the device is simpler and more compact in integral structure, lower in manufacturing cost, stable in performance and low in failure rate; a diaphragm type vacuumizing device, a gas ring vacuum pump, a roots pump and the like can serve as the vacuumizing device, and the drive clutch self-priming device is suitable for different working conditions of high flow, toxicity, harmfulness and the like.

The invention relates to an electric train braking energy recovery hydraulic energy-saving emission-reducing device with an electric train and a train energy-saving emission-reducing hydraulic device combined. Through combination of motor main power and hydraulic hybrid power energy-saving emission-reducing devices, when a train is in a braking process or an idling state and a transmission shaft of the train is in inertia rotating, mechanical energy is converted into hydraulic energy and is stored in an energy accumulator. When the train is started, the energy accumulator is started, hydraulic oil works through a plunger oil motor, hydraulic energy is converted to mechanical energy, the rotating speed and the torque output by the oil motor drive a main driver of the train, so that the train is started to walk, at the time, an engine can be in a complete idling state, and a hydraulic power device is used as an auxiliary power source to start the train to walk. According to the electric train braking energy recovery hydraulic energy-saving emission-reducing device, the hydraulic hybrid power device and the railway traffic transportation electric train are combined, the braking energy recovery hydraulic energy-saving emission-reducing device is suitable for a high-load multi-carriage multi-motor novel electric train, the purpose of electric train energy conservation and emission reduction is achieved, and the device is also suitable for fuel oil internal combustion engine train.

The invention discloses a high-energy ionized gas purifier with low ozone generating amount, belonging to the technical field of environmental pollution control. In the purifier, a filtering device isarranged at a gas inlet and used for remove particulate matter in odor and reduce the odor humidity, enhance the applicability to different exhaust gases, and pre-equalize flow of the exhaust gases;a multi-return structure of a diversion section and a honeycomb structure of an oxidation catalysis reaction section improve the mixing and reaction time and the complete purification rate; a high-energy ionizer uses dielectric glass, the excitation voltage is low, the energy consumption is reduced, and the purification is more full by using a high-energy ionization process and a photon-dissociation excitation process in sequence. The high-energy ionized gas purifier has the advantages of integrated structure, high integration degree, convenient transportation and small occupied area; with a modular structure in the purifier, maintenance and replacement are convenient, the service life is prolonged, the cost is reduced, and the purifier can be used for processing exhaust with higher concentration and large gas quantity; in the actual operation process, the increased amount of ozone is less than or equal to 0.1mg / m<3>, which effectively avoids secondary pollution caused by the large increased amount of ozone.

The invention discloses an automatic time compensation correction method and a synchronous sampling universal module. The method comprises steps of reserving a sampling channel L0 in a digital-to-analog conversion chip, dividing a debugging analog signal into two paths, and connecting two paths to a conditioning filter circuit channel L1 and the channel L0 of the digital-to-analog conversion chip; the sampling point time Tn0 and the sampling point time Tn1 of the channel L0 and the channel L1 being obtained; tn1-Tn0 is a time error value of the analog signal conditioning filter circuit, digital-to-analog conversion acquisition of channels L1 to L8 is completed, total time Ts1 is recorded, a channel L0 is added for secondary digital-to-analog conversion reading, and the total time of digital-to-analog conversion acquisition is Ts2; and Ts2-Ts1 is a single-channel digital-to-analog conversion time error. The universal module comprises a control module, a time synchronization module, a clock module, a sampling module, a power supply module and an interface module, inherent time error correction is carried out in the time synchronization module, time compensation is carried out in the sampling module by utilizing an automatic time compensation correction method, synchronous sampling precision is high, and applicability is wide.

The invention provides a resonant column structure processing method, which comprises the following steps: processing a pipe body with a lower hopper-like connector from aluminum, steel, copper or brass bars; processing a flange from aluminum, steel, copper or brass bars; and connecting the flange with the pipe body through pins to obtain the resonant column. The method has the advantages of high material utilization rate, less processing time, low processing cost, no need for auxiliary equipment (such as mold), simple procedure, and easy implementation of standard design.

The invention provides an integrated electro-hydraulic servo rotary actuator which is characterized in that a hydraulic execution element, a hydraulic control element, a hydraulic power element, a sensor, a motor and a control system are modularly and integrally arranged, so that the power density ratio and the power volume ratio can be greatly improved, the system can be simplified, and system installation control, online real-time monitoring and intelligent protection are facilitated. The integrated electro-hydraulic servo rotary actuator comprises a spiral oscillating cylinder, an integrated motor pump, an integrated valve block, an energy accumulator, a controller and an RVDT angle sensor, the spiral oscillating cylinder comprises a cylinder body, an output shaft and a piston, the piston and the output shaft are arranged in an inner cavity of the cylinder body, the piston is connected with corresponding first meshing inner teeth of the inner cavity of the cylinder body in a meshing manner through outer spiral teeth, the outer cylindrical surface of the piston is in clearance fit with the annular surface of the inner wall of the inner cavity of the cylinder body, and the connecting end of the output shaft is meshed with inner spiral left teeth of a positioning cavity of the piston through outer spiral left teeth.

A floating type ship collision prevention system with metal dampers is formed by a floating body, anchors, rope chains and the metal dampers. The floating body is moored through the anchors and the rope chains. The metal dampers are mounted on the floating body and connected with the rope chains. When the floating body is pushed by a ship to move, the metal dampers bear the function of tension of the rope chains, and therefore materials of the metal dampers deform, resistance is provided, the situation that the ship moves towards a pier to consume ship kinetic energy is avoided, and the moving direction of the ship is changed so that the ship can avoid the pier. The floating type ship collision prevention system with the metal dampers is high in ship stop capacity, relative constancy is kept, and the maintenance workload is low.

The invention relates to a laser diode pump solid-state laser, in particular to an optical fiber coupling output laser diode pump solid-state laser and a manufacture process. The optical fiber coupling output laser diode pump solid-state laser is characterized by comprising a laser medium and an output optical fiber which are fixed in a casing, wherein a 1064 nm full reverse film and a 808 nm full transparent film are plated on one end surface of the laser medium, a 1064 nm partial transmission film and a 808 nm full reverse film are plated on the end surface of the output optical fiber in the casing, the end surface of the laser medium plated with the 1064 nm full reverse film and the end surface of the output optical fiber plated with the 1064 nm partial transmission film form a resonant cavity in the casing, and a the laser medium laser diode out-of-cavity pump on the ended surface of the laser medium forms 1064 nm oscillatory output in the cavity. The optical fiber coupling output laser diode pump solid-state laser is small in volume and high in reliability and coupling efficiency.

The invention relates to an optical-fiber side surface coupled laser diode pumped solid-state laser and a manufacture technology. The laser is characterized by comprising a laser medium and an output optical fiber, wherein the laser medium and the output optical fiber are fixed in a shell; one end surface of the laser medium is plated with a 1064nm total-reflection film and a 808nm total-penetration film; the end surface of the output optical fiber in the shell is plated with a 1064nm partial-penetration film and a 808nm total-reflection film; the end surface of the laser medium, which is plated with the 1064nm total-reflection film, and the end surface of the output optical fiber, which is plated with the 1064nm partial-penetration film, form a resonant cavity in the shell; one side surface of the laser medium is provided with a side-surface laser diode; the laser medium is subjected to cavity-outside pumping by the side-surface laser diode; and para-1064nm oscillation output is formed in the cavity. The optical-fiber side surface coupled laser diode pumped solid-state laser disclosed by the invention has the advantages of small volume, high reliability and high coupling efficiency.

The invention discloses an optical-fiber coupled output end surface pumped solid-state laser and a manufacture technology. The optical-fiber coupled output end surface pumped solid-state laser comprises a laser medium and an output optical fiber, wherein the laser medium and the output optical fiber are fixed in a shell; one end surface of the laser medium is coated with a 1064nm total-reflection film and a 808nm total-penetration film; the end surface of the output optical fiber in the shell is coated with a 1064nm partial-penetration film and a 808nm total-reflection film; the end surface of the laser medium, which is coated with the 1064nm total-reflection film, and the end surface of the output optical fiber, which is coated with the 1064nm partial-penetration film, form a resonant cavity in the shell; the end surface laser diode in the cavity acts on the laser medium; the laser medium is subjected to extra-cavity pumping by the end surface laser diode; and paired 1064 oscillation output is formed in the cavity. The optical-fiber coupled output end surface pumped solid-state laser disclosed by the invention is favorable for improving the light beam quality and simplifying a DPL (diode pumped solid-state laser) optical fiber output coupling structure. Because the diameter of the optical fiber end surface is small, high-order mode oscillation in the resonant cavity can be inhibited, and the defects of the traditional coupled mode are overcome.

The invention discloses a gravity and lateral force separated fabricated energy dissipation structural system and a design method. The gravity and lateral force separated fabricated energy dissipation structural system comprises fabricated shear walls and frame columns, a main beam is installed between the fabricated shear wall and the frame column adjacent to the fabricated shear wall, the main beam is installed between the frame columns adjacent to the fabricated shear walls, secondary beams are installed on a floor layer which is formed by the main beam, the fabricated shear walls and the frame columns and is perpendicular to the fabricated shear walls, a metal damper is installed in the span of the main beam, and a support is arranged below the metal damper. The design method comprises the steps of determining the design scheme of the main beam, the secondary beams and a laminated slab composite floor system, determining the design scheme of the fabricated shear walls and the frame column, determining the design scheme of the metal damper and the support and determining the design scheme of connecting joints. According to the gravity and lateral force separated fabricated energy dissipation structural system and the design method, gravity and a lateral force system can be separated, standardized design and manufacturing of parts are facilitated, the engineering cost is reduced, the energy dissipation capacity of the structure under the earthquake action is enhanced, and the anti-seismic safety of the structure is improved.

The invention relates to a reverse boring cutter, and belongs to the technical field of a machining cutter. The reverse boring cutter comprises a cutter bar (1), a cutter body, a slide valve (2), a mandril (4), a blanking cap (5), a spring (6) and a hinge pin (8), wherein the tail part of the cutter bar is provided with a high through cooling fluid through hole (101), the middle part of the cutter bar is provided with a cavity (102) for holding the slide valve and a cavity (103) for holding the cutter body, and the head of the cutter bar is provided with a cavity (104) for holding the mandril, a spring and the blanking cap and a hole for installing the hinge pin (8); the slide valve is arranged in the cavity (102), and can slide axially along the cutter bar, the cutter body is installed in the cavity (103) through the hinge pin and can rotate freely by taking the hinge pin as a shaft in the cavity, the mandril sliding axially along the cutter bar and the spring fixedly connected with the cutter bar are arranged in the cavity (104). According to the reverse boring cutter provided by the invention, the problems that the reverse boring cutter is complicate in structure, high in manufacturing cost and low in durability, and cooling equipment needs to be installed additionally at work can be solved.

The invention provides an overlapped-type zero-leakage hydraulic lock valve which comprises inserted type zero-leakage hydraulic lock valves and an installation valve block. The installation valve block is provided with six faces, one pair of opposite faces are each vertically provided with an inserted valve hole, the two inserted valve holes are oppositely formed, the inserted zero-leakage hydraulic lock valves are inserted into the first inserted valve hole and the second inserted valve hole correspondingly, and each inserted zero-leakage hydraulic lock valve is connected with an electric plug. The overlapped-type zero-leakage hydraulic lock valve can reduce the design and machining work amount, save materials and achieve standard design conveniently as an ordinary overlapped-type hydraulic lock valve; and meanwhile, the overlapped-type zero-leakage hydraulic lock valve furthermore has a zero-leakage function, and an execution element which is required to work at any position in a travel range can achieve non-deviation position maintenance.

The invention discloses a transformer tap switch flexible to install and a transformer applying the same, and belongs to the field of transformers. According to the invention, three groups of split-connection mechanisms of the transformer tap switch are divided into at least two independent switch parts, and the switch parts are in transmission connection with the switch operation mechanism through the transmission sleeve pipeline. According to the closed-loop tap switch, the switch operation mechanism synchronously controls the moving contact assemblies in the three groups of split-connection mechanisms to slide relative to the corresponding static contact assemblies so as to change the connection position of the moving contact and the static contact, so that the installation positions of the three groups of split-connection mechanisms in the transformer are more flexible; the wiring position of each tapping mechanism can be closer to the lead outgoing position of the corresponding coil winding of the transformer, so that the lead length of the coil winding is reduced, and the installation and operation of the tapping switch are facilitated; and the occupied space of the tap switch in the transformer can be reduced, so that the structure of the transformer is more compact, and the transformer can be suitable for the existing triangular three-dimensional transformer and planar rectangular transformer.

The invention discloses a balcony and a cruise ship. The balcony comprises a walkway platform and a handrail part, the handrail part is arranged on the outer side of the walkway platform, the walkwayplatform comprises a supporting piece and a floor, the floor is arranged on the upper side face of the supporting piece, the interior of the supporting piece is of a hollow structure, and the hollow structure of the supporting piece is used for arranging a pipeline. The balcony is designed to be the walkway platform and the handrail part, so the design form of the balcony is simplified, the integrity of the balcony is improved, standardized design of the balcony is facilitated, modular balcony building is facilitated, and an assembly line manufacturing process for the balcony is facilitated. The supporting piece of the walkway platform is designed to be of the hollow structure, and the pipeline is laid in the hollow structure, so the installation difficulty of the pipeline can be reduced,and the installation efficiency of the pipeline can be improved.

The present invention relates to a high-precision multi-cone deep hole detection device and a detection method, and belongs to the technical field of mechanical processing inspection. The detection device includes: an indicator (2) and a set gauge (1), where the indicator is used to indicate whether a test piece (3) is qualified by a reading; and a central opening, where the outermost side of thebig end matches a hole shape of the end of the test piece, the step surface is centrally vertical to the shape of the outermost side, the small end is a slender shaft, a plane is milled at a positionL4 from the lamination surface of the indicator, L4 is the origin 0 of coordinates, and 10 lines of 1 mm are engraved from the upper left and the lower right. The set gauge is used to measure the testpiece, and includes a handle shaft (1-1) and a cone-shaped column (1-4), the cone-like column is matched with the measured cone hole, and the handle shaft is cooperatively inserted into the center hole of the indicator through the clearance and slides therein, and two alignment lines L1 and L2 are engraved on the handle shaft along the circumference according to the calculated size. Compared withthe prior art, the device of the present invention is easy to process, install and use, has low costs and high durability; and the measurement method is stable and reliable, and the measurement is accurate.

The invention provides a modularized management system based on PDM product data, which comprises an auxiliary file module, a project file module, a library file module and a learning material module; the auxiliary file module comprises various sketch combinations and accelerates the product design speed, and the project file module is used for managing PDM product information. The library file module is used for reducing repeated work in PDM product design, the learning material module is used for PDM operation instructions checked by operators, and the system has the advantages that the number of folder layers is small, and use is convenient; the design document and the management document are located in the same directory, so that the retrieval speed is high; design is reasonable, and scheduling is convenient; different products have different structures; documents enter and exit from the PDM system in order, and standardized design of products is promoted; data centralized management, background monitoring, data sharing management and data flow management are achieved; approval is completed through the server, and paperless office is achieved; combination with OFFICE, CAD and ERP is achieved, and operation of the whole system can be connected from design.