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570results about How to "Reduce purchasing costs" patented technology

Large cross-section weak surrounding rock tunnel three-step and six-part short-distance construction method

ActiveCN102562075AMeet the requirements for enhanced controlsSpeed ​​up early closure timesUnderground chambersTunnel liningShortest distanceRock tunnel
The invention discloses a large cross-section weak surrounding rock tunnel three-step and six-part short-distance construction method, which comprises the steps as follows: (1) annularly excavating an upper step of an upper part arc pilot tunnel, transferring excavated earthwork of the upper step to a lower step; (2) excavating a left part of a middle step about 4.5-5 meters behind the upper step, and transferring excavated earthwork to the lower step; (3) excavating a right part of the middle step about 3-4 meters behind the left part of the middle step, and transferring excavated earthwork to the lower step;(4) excavating a left part of the lower step about 6-8 meters behind the left part of the middle step or about 3-4 meters behind the right part of the middle step, and conveying excavated earthwork of the left part of the lower step out of the tunnel; (5) excavating a right part of the lower step about 3-4 meters behind the left part of the lower step, and conveying excavated earthwork of the lower step out of the tunnel; and (6) excavating the rest part of the tunnel bottom about 20-25 meters behind the right part of the lower step, excavating continuously according to the steps in a circulating and interlacing manner, and finally realizing tunnel excavating construction. The method can be used for building a large cross-section tunnel in a safe, rapid and economic manner.
Owner:CCCC SECOND HIGHWAY ENG CO LTD +1

Synchronous control circuit and method for rail-vehicle-rescue emergency braking

PendingCN107235041AAchieving Brake Synchronization RequirementsAvoid the "discount" problemBrake safety systemsIsolation valveEmergency rescue
A rail vehicle rescue emergency braking synchronous control circuit, which is connected in parallel to the normally closed contact of the linked relay and the emergency braking relay on the emergency braking train line circuit of the lead car of the rescue vehicle and the faulty vehicle, and is used for rescue trains Rebuild the emergency braking train line circuit after connecting with the faulty train; at the same time, configure the brake isolating switch on the head car of the rescue vehicle and the faulty car, connect the rescue head and tail relay and brake isolation relay in parallel, and the emergency braking of the driver's station The normally closed contact of the button is connected in series to the circuit of the emergency brake train line, and the brake isolation solenoid valves of all vehicles are connected in parallel to the circuit of the emergency train line, and the power is supplied by the circuit of the emergency train line. The valve realizes the synchronous control of emergency braking under rescue conditions. The control method of the present invention is safe and reliable, and the synchronization is precise, which saves more than 3 million yuan in procurement costs for the entire project, saves equipment installation space, and ensures installation and maintenance space for the configuration of full-motion vehicles + driverless vehicles.
Owner:CRRC CHANGCHUN RAILWAY VEHICLES CO LTD

Efficient and reliable power supply architecture of data center electronic equipment

The invention aims at providing a power supply system for electronic equipment and a corresponding frame power supply, wherein the power supply system comprises a back-up type high-voltage direct-current power supply and a frame power supply, the input end of the back-up type high-voltage direct-current power supply is of high-voltage alternating-current input, the output end of the back-up type high-voltage direct-current power supply is of high-voltage direct-current output, and the back-up type high-voltage direct-current power supply comprises a rectifier device used for charging a storage battery; and the frame power supply comprises a first module, a second module and a control switching device, wherein the first module is used for converting the high-voltage alternating-current input into a low-voltage direct-current output, the second module is used for converting the high-voltage direct-current input into a low-voltage direct-current output, output ends of the first module and the second module are connected in parallel together, output through a low-voltage direct-current bus and are used for supplying power for a plurality of electronic equipment, and the control switching device is used for controlling the switching of the first module and the second module and ensuring that the first module supplies power to the plurality of electronic equipment when the high-voltage direct-current power is normal and the second module supplies power to the plurality of electronic equipment when the high-voltage direct-current power is interrupted. Compared with the prior art, the power supply system has the advantages of high efficiency, high reliability and small investment.
Owner:BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD

Oblique three-dimensional aerial measurement data acquisition system and acquisition method and control terminal

The invention relates to an oblique three-dimensional aerial measurement data acquisition system, which comprises a flight platform and the control terminal. The flight platform comprises a multi-rotor unmanned aerial vehicle and a single camera arranged on the multi-rotor unmanned aerial vehicle. The control terminal comprises a task area planning module for planning the flight course; and a parameter setting module for setting flight parameters of the multi-rotor unmanned aerial vehicle, the flight parameters comprising start point position, final point position, inclination angle of a nose, airplane flying height, forward overlap degree and side overlap degree. The multi-rotor unmanned aerial vehicle flies according to the planned number of flight, the flight course and the set parameters. The camera is used for collecting data in the flying process. The invention also provides a data acquisition method and the control terminal. Compared with the prior art, the brand-new flight data acquisition method is designed to adapt to a single-lens, multi-rotor and individual oblique photograph acquisition work mode; furthermore, full-automatic flight acquisition is realized, and operation process is normalized; and achievement quality is ensured and work efficiency is improved.
Owner:广州优飞信息科技有限公司

Medical information management system based on two-dimensional code and cloud service and method thereof

InactiveCN105303495ASolve the incomplete collection of informationThe solution cannot be sharedPayment architecturePaymentData management
The invention discloses a medical information management system based on a two-dimensional code and a cloud service. The medical information management system comprises an information acquisition module, a payment module, a two-dimensional code generation module and a cloud-side data management module. The information acquisition module is used for acquiring all examination and diagnosis and treatment information of a hospital and compressing and encrypting the information and then storing the information in a cloud-side database. The payment module is used for generating a two-dimensional code with a payment function for each piece of examination and diagnosis and treatment information in the cloud-side database for a user to complete payment. The two-dimensional code generation module is used for generating a unique identity two-dimensional code for the user completing payment. The cloud-side data management module is used for establishing a cloud platform for saving the examination and diagnosis and treatment information, managing the examination and diagnosis and treatment information of the user in the cloud-side database and browsing, downloading, management and uploading for the user. The invention also discloses a medical information management method based on the two-dimensional code and the cloud service.
Owner:CHENGDU KNOT MEDICAL TECH

Steel rail induction butt welding and heat treatment method

The invention discloses a steel rail induction butt welding and heat treatment method which includes the following steps: locating two steel rails through locating pieces which are installed on the lower portions of center shafts of an induction welding device in a connected mode, enabling jaws of two sets of clamp forceps to clamp the two steel rails respectively and carry out centring, enabling an opening-closing type induction heating coil to be moved to the joint of the two steel rails with the help of auxiliary oil cylinders and wrap the steel rails, enabling two sub-coils to be in contact with electrode structures, enabling a PLC to control the induction heating coil to heat the joint of the steel rails, when the temperature reaches the preset welding temperature of 1200 DEG C to 1430 DEG C, enabling upsetting oil cylinders to exert preset upsetting force to enable the end faces of the two steel rails to be tightly welded together, enabling a protrusion eliminating device to cut welding beading at the joint of the steel rails, enabling the induction heating coil to heat the weld joint of the steel rails again, after the temperature reaches the preset normalizing temperature of 830 DEG C to 950 DEG C, starting an air blasting system to cool the weld joint of the steel rails, and enabling the two sub-coils to be separated through the locating oil cylinders to enable the jaws of the two sets of clamp forceps to be opened to loosen the steel rails. The steel rail induction butt welding and heat treatment method is automatic in operation and high in efficiency.
Owner:CHANGZHOU RUITAI ENG MASCH CO LTD +1

Modifiable tracking control method for images of hot-rolled plate blanks

The invention discloses a modifiable tracking control method for images of hot-rolled plate blanks, and belongs to the field of automatic control. The modifiable tracking control method includes that an automatic modification function module, a first manual correction module and a second manual correction module are added in a 'tracking' program of a PLC (programmable logic controller), and corresponding manual correction operation buttons are added to a human-machine interface of a terminal in a field; when a plate blank within a certain confidence interval is detected by a hot metal detector in the field, large correction cycle is started by the PLC if the current actual position of the plate blank is inconsistent with the position of an image, so that the image of the plate blank is automatically modified; when finding that the image of the plate blank is inconsistent with the actual position of the plate blank, operators in the field can select image areas required to be modified and image modification directions via the corresponding buttons on a picture of the human-machine interface of the terminal in the field, so that a manual image position modification function can be realized. The modifiable tracking control method has the advantages that the actual position of the plate blank can be accurately reflected, the hot-rolled plate blank tracking control precision is improved, a technological process can be controlled effectively, energy consumption is reduced, the quality of products is improved, and the modifiable tracking control method can be widely applied to the field of automatic control for hot-rolling production processes.
Owner:BAOSHAN IRON & STEEL CO LTD

Motor driving-charging integrated device with 220 volt alternating current (VAC)/380VAC charging function

The invention relates to the electromobile motor driving-charging integrating technology, aims at solving the problems that in the existing electromobile technology, a motor driving device and a vehicle-mounted high-voltage battery pack charger are independently arranged and are large in vehicle-mounted space occupation and vehicle-mounted electrical device weight and a ground large-power fast charging device is needed to be configured, and provides a motor driving-charging integrated device with a 220 volt alternating current (VAC)/380VAC charging function. The motor driving-charging integrated device with the 220VAC/380VAC charging function comprises a boosting/depressurizing direct current (DC)/DC conversion device, a support capacitor, a motor driving inverter bridge, a 380VAC charging conversion switch circuit and a 220VAC charging conversion switch circuit. The motor driving-charging integrated device can improve efficiency of the inverter bridge of a motor during low speed and improve efficiency of the motor during high speed; enables the inverter bridge capacity to be greatly reduced under the condition of driving an electromobile to use the motor with the same power; and can achieve fast charging of a high-voltage battery pack without using the ground large-power charging device.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Servo drive device and servo control system

The invention discloses a servo drive device and a servo control system. The servo drive device includes a power module, a processing module and a coding interface module. The output ends of the power module are respectively connected with each power input end of the processing module and the coding interface module to provide power supply for the processing module and the coding interface module. The coding interface module comprises at least a first position feedback interface unit, a second position feedback interface unit and a power supply interface unit. The output ends of the first position feedback interface unit and the second position feedback interface unit are connected with the processing module, and correspondingly used for acquiring code data of an incremental encoder and an absolute-type encoder and delivering the code data to the processing module after corresponding processing of the code data. The input end of the power supple interface unit is connected with the output end of the power module, and provides working voltage for an external encoder connected with the first position feedback interface unit or the second position feedback interface unit selectively according to configuration parameters. The servo drive device and the servo control system can be compatible with multiple types of encoders including photoelectric rotary encoders with the same or different working voltages.
Owner:BEIJING A&E TECH
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