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179results about How to "Simple implementation" patented technology

Elastic hinge driving truss type foldable unit and foldable supporting arm

The invention relates to truss type foldable units and foldable supporting arms formed by the same and particularly to an elastic hinge driving truss type foldable unit and a foldable supporting arm. The elastic hinge driving truss type foldable unit and the foldable supporting arm aim at solving the problems that the existing hinged supporting arm is complicated in driving mechanism, large in folding size and low in repeated unfolding accuracy and accordingly the structural weight is greatly increased and the unfolding reliability is low. The elastic hinge driving truss type foldable unit comprises an upper frame, a lower frame, N elastic hinge type folding arms and N groups of drawing cable assemblies; the upper frame and the lower frame are arranged in a parallel mode; N vertexes of the upper frame and N vertexes of the lower frame are arranged in an upper and lower corresponding mode; every two corresponding vertex angles formed between the upper frame and the lower frame are supported through the corresponding elastic hinge type folding arm and can be connected with each other in a rotating mode; every group of drawing cable assembly is arranged at the diagonal position in a rectangular plane which is formed by the upper frame, the lower frame and the two corresponding adjacent elastic hinge type folding arms. The elastic hinge driving truss type foldable unit and the foldable supporting arm are applied to a satellite, a space station and a space probe.
Owner:HARBIN INST OF TECH

Complete scissor-like double-layer annular truss extendible antenna mechanism

The present invention provides a complete scissor-like double-layer annular truss extendible antenna mechanism. The mechanism comprises an inner layer annular truss component, an outer layer annular truss component and N inner and outer layer connection truss components; the inner layer annular truss component and the outer layer annular truss component both include N extending units; two common flower discs are connected between adjacent extending units; the inner and outer layer connection truss components are concentrically arranged; two upper and lower flower discs at each side of the inner layer extending units are connected with the corresponding two upper and lower outer layer flower discs at each side of the outer side layer extending units respectively through one inner and outer layer connection truss component to form a double-layer annular truss; and the distance between the length of the rod pieces at the same position of the inner and outer layer extending units and a flower disc rotation secondary axis and a center line satisfies a special proportional relation, and the ratio of the inner layer and the outer layer is (1-sin(180 / N)) / (1+sin(180 / N)). The complete scissor-like double-layer annular truss extendible antenna mechanism is high in rigidity, simple in structure and high in reliability, and can be applicable to a communication satellite, a space station and a space probe.
Owner:YANSHAN UNIV

Method for monitoring effective coverage of concrete vibration in real time

The invention relates to a method for monitoring the effective coverage of concrete vibration in real time, which includes the following steps: a vibrated area is divided into a regular virtual grid according to a set interval; the coordinates of vibrating equipment are acquired by a positioning device in real time; the azimuth of vibration is acquired by an azimuth sensing device in real time, and in combination with the coordinates of the vibrating equipment and vibrated shape data, the effective vibration-affected area of the vibrating equipment is calculated; the effective vibration-affected area is mapped into the virtual grid, and according to whether the effective vibration-affected area is completely covered by the virtual grid, the coverage coefficient of the virtual grid is calculated; and according to the coverage coefficient of the virtual grid, vibration data are statistically analyzed. The method realizes the automatic monitoring of the coverage of concrete vibration, dispensing with manual intervention, and moreover, the method realizes the real-time monitoring of the coverage of vibration, prevents the errors of artificial judgment, and ensures that the process of vibration is more intelligentized, the precision of data is high, and the method is stable and reliable.
Owner:POWERCHINA CHENGDU ENG

Double-layer annular truss antenna mechanism based on passive drive

The invention provides a double-layer annular truss antenna mechanism based on passive drive and relates to double-layer annular truss type expandable antenna mechanisms. The problems that an existing large-caliber single-ring annular truss antenna is small in rigidity, the use rigidity requirement can not be met, an existing annular truss antenna mechanism is complex in drive structure and large in weight, inhaul cables are prone to be twisted after being used for unfolding the mechanism, and the unfolding reliability is low are solved. The double-layer annular truss antenna mechanism comprises multiple inner and outer truss foldable unit modules, multiple inner transition folding assemblies and multiple outer transition folding assemblies. Each inner and outer truss foldable unit module comprises an inner folding unit module, an outer folding unit module and two inner and outer connection truss assemblies. Inner supporting vertical rods and outer supporting vertical rods which are opposite are connected through the inner and outer connection truss assemblies. After the inner and outer truss foldable unit modules are unfolded, an inner and outer double-layer annular truss polyhedron is formed. The double-layer annular truss antenna mechanism is used for a satellite, a space station and a space probe.
Owner:HARBIN INST OF TECH

Online measurement device and method for boiler pulverized coal particle parameters

The invention relates to an online measurement device and method for boiler pulverized coal particle parameters. The device comprises an optical signal collection unit and a data processing unit, wherein the optical signal collection unit is used for collecting an optical signal caused by that pulverized coal particles flow through a measurement area, and comprises two paths of light sources, probes and a photoelectric element, the light sources are used for emitting light to irradiate the measurement area, the two paths of probes are inserted into a boiler pulverized coal particle pipeline, the photoelectric element is used for receiving the optical signal of the pulverized coal particles flowing through the measurement area and converting the optical signal into an electrical signal, the data processing unit is connected with the optical signal collection unit, and is used for processing the signal collected by the optical signal collection unit, the data processing unit comprises a data collection system and an analyzing and processing system, the data collection system is used for recording and storing the signal collected by the optical signal collection unit, the data processing unit is used for processing the signal recorded and stored by the data collection system, and a processing result is stored in the data collection system. The online measurement device and method have the advantages that a structure principle is simple, the sensitivity is high, and the like.
Owner:广州敏远能源科技有限公司

Method and system for controlling flow rate by utilizing access control list

The invention relates to the field of data communication and discloses a method for controlling the flow rate by utilizing an access control list by aiming at the condition that the existing interchanger can only limit the message forwarding rate and cannot limit the total flow rate. According to the technical scheme, firstly, a message matching function of the access control list is utilized, meanwhile, a message number statistical function is combined, a volume bucket is defined, when the volume of the volume bucket reaches the specified threshold value, messages are controlled, and the message passing speed can be limited or the message passing is forbidden. The access control list is utilized for controlling the total number of the flow rate entering the interchanger in a certain time period, and clients can flexibly define the flow rate entering the interchanger. The invention also discloses a system for controlling the flow rate by utilizing the access control list. The method and the system provided by the invention have the advantages that according to different matched fields, the control based on ports, VLANs (virtual local area networks) or the whole equipment flow rate total number can be realized on the interchanger, and meanwhile, the flow rate total number can also be controlled in a combined way in modes such as data types and service types.
Owner:MAIPU COMM TECH CO LTD

Well deviation measuring system for gas drilling

The invention discloses a well deviation measuring system for gas drilling used for measuring well deviation and positions in conventional gas drilling. The system realizes precisely, stably and conveniently transmitting signals by adopting a way that wire transmission and wireless transmission are matched. The technical scheme is that the system consists of a measuring head, a cable quick coupling, a signal transmission nipple and ground equipment, wherein the measuring head is placed above a drilling head through a cable, so that signals are transmitted to the signal transmission nipple of a wellhead through a cable; the cables are connected by adopting the cable quick coupling, the signal transmission nipple is arranged between a water faucet and a square drilling rod, and a signal processing circuit board, a power supply and a signal projecter are arranged inside the inner core shell of the signal transmission nipple; a cable sealing joint is arranged at the lower end of the inner core shell, the signal transmitter is connected with an antenna cover plate through a guide wire, and the ground equipment receives signals through a signal receiver. The system can realize measuring and transmitting signals in real time along with drilling, so that the system can be used for gas drilling and unbalanced drilling.
Owner:SOUTHWEST PETROLEUM UNIV

Bias guiding mechanism of static pointing type rotary steering well drilling tool and control method

ActiveCN110043188AReduce the difficulty of orientationSimple implementationDirectional drillingBorehole drivesElectric energyPetroleum
The invention discloses a bias guiding mechanism of a static pointing type rotary steering well drilling tool and a control method, and belongs to the technical field of petroleum and natural gas welldrilling. The bias guiding mechanism of the static pointing type rotary steering well drilling tool comprises a drill bit connecting shaft and a non-rotary outer cylinder, and further comprises a flexible hose, bias mechanisms and a sliding block connecting piece; the flexible hose is connected with the drill bit connecting shaft, and the bias mechanisms are installed in the non-rotary outer cylinder; the bias mechanisms comprise center adjusting sliding blocks, spiral telescopic mechanisms and control motors; the sliding block connecting piece is arranged on the outer part of the drill bit connecting shaft in a sleeving mode; and the center adjusting sliding blocks are connected with the control motors through the spiral telescopic mechanisms and are installed in the sliding block connecting piece, the center adjusting sliding blocks are driven by the control motors to move forward and backward to push the drill bit connecting shaft, and control over structure bend angles and tool face angles is realized. The disturbance and the load applied on the motors are both small and stable in the process of making a connection, the electric energy requirement of a system is reduced obviously, and the service life of the guiding tool is prolonged; and the scheme is simple and easy to operate, and the structure is compact.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Anastomat for prepuce cutting

The invention discloses an anastomat for prepuce cutting. The anastomat comprises a shell, a prepuce fixing component, a cutting component and a drive component. A nail bin is arranged at the head of the shell, and an adjusting knob capable of rotating in the circumferential direction is arranged at the tail of the shell; the prepuce fixing component comprises a glans penis cover, a connecting rod is arranged at the tail of the glans penis cover, and the tail of the connecting rod is matched with the adjusting knob through a thread; a first visible portion is arranged on the side wall of the shell of the anastomat for prepuce cutting, and a first indication portion is arranged on the connecting rod; a second visible portion is arranged on the adjusting knob, and a fourth indication portion is arranged on the connecting rod. In this way, the relative position relation between the glans penis cover and the nail bin can be determined by comparing the position of the first indication portion relative to the first visible portion or the position of the fourth indication portion relative to the second visible portion, the position of the glans penis cover can be visualized, then the accuracy and effectiveness of cutting operation are guaranteed, early warning can be made for possible operation risks, and the reliability of an operation is greatly improved.
Owner:BEIJING BIOSIS HEALING BIOLOGICAL TECH

Over-constrained shear fork-type double-layer annular truss deployable antenna mechanism

The invention relates to an over-constrained shear fork-type double-layer annular truss deployable antenna mechanism. The over-constrained shear fork-type double-layer annular truss deployable antenna mechanism comprises an inner-layer annular truss assembly, an outer-layer annular truss assembly and 2N inner and outer-layer connection truss assemblies; the inner-layer annular truss assembly includes N inner-layer folding and unfolding units; adjacent inner-layer folding and unfolding units are connected with each other through two common inner-layer disc chucks, so that the inner-layer annular truss assembly can be formed; the outer-layer annular truss assembly includes N outer-layer folding and unfolding units; adjacent folding and unfolding units are connected with each other through two common outer-layer disc chucks, so that the outer-layer annular truss assembly can be formed; and two inner-layer disc chucks at the upper part and lower part of the same side of each of inner-layer folding and unfolding units are connected with four outer-layer disc chucks of a certain outer-layer folding and unfolding unit through two inner and outer-layer connection truss assemblies, so that the shear fork-type double-layer annular truss deployable antenna mechanism can be formed. The shear fork-type double-layer annular truss deployable antenna mechanism of the invention has good manufacturing process, high rigidity and large folding ratio.
Owner:河北科讯通信器材有限公司
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