95results about How to "Real-time monitoring of stress" patented technology

The invention discloses a method for monitoring an axial force of a scaffold upright rod, which comprises the following steps: arranging a pressure sensor at the bottom end of the scaffold upright rod to acquire the magnitude of the axial force borne by the upright rod; and keeping the communication connection between the pressure sensor and a microcomputer, and transmitting the acquired axial force data to the microcomputer in real time. By adopting the method, the all-weather real-time acquisition of the stress of the scaffold upright rod can be realized by using the pressure sensor, and the acquired stress data are transmitted to the microcomputer so as to be further analyzed and processed. A standard value of the axial force can be preset in the microcomputer; and when the measured axial force received by the microcomputer is larger than the standard value, the microcomputer starts an alarm program. Therefore, the method realizes the real-time monitoring of the stress condition of the scaffold upright rod, alarms immediately once the preset value is passed, and avoids potential safety hazard.

The invention relates to a single-degree-of-freedom occlusion robot applied to food and dental monitoring. The robot comprises a static platform, a power device and a transmission device; the power device and the transmission device are in transmission connection with each other and are both arranged at the upper end of the static platform, an upper jaw fixed platform and a lower jaw adjustable platform are further up and down oppositely arranged at the upper end of the static platform, an upper jaw mounting platform is rotatably connected with the transmission device, and the lower jaw adjustable platform is slidingly connected with the static platform; the lower jaw adjustable platform includes a sliding flat plate, the upper end of the sliding flat plate is provided with a lower jaw mounting platform, and the lower jaw mounting platform is connected with the sliding flat plate through a platform lifting assembly; the upper jaw fixed platform and the jaw mounting platform are also provided with monitoring systems. The robot can simulate the occlusion process of teeth, the deformation state of food in the occlusion process is observed, the force bearing condition of a tooth modelis monitored through the monitoring systems, and therefore for different kinds of food, the whole force bearing conditions of the teeth in the occlusion process can be detected and analyzed.

A metamorphic knuckle mechanism of a snake-imitation rescuing robot comprises a knuckle left end cover, a knuckle right end cover, two RRPRR branches and one RRPRR metamorphic branch. Metamorphic knuckles have two mechanism forms, and the work space and mobility can be changed. In the mechanism form I, a movable pair P in the RRPRR metamorphic branch is in an active moving state, a rotation pair R is in a following state, and then the knuckles have one moving freedom degree and two rotating freedom degrees. In the mechanism form II, the movable pair P in the RRPRR metamorphic branch is in a minimum displacement and locking state, the rotation pair R is in an active state, the knuckles are changed into parallel spherical knuckles in a metamorphic manner, and three rotation freedom degrees are achieved. The metamorphic knuckle mechanism has the beneficial effects of being good in flexibility, high in bearing capability and good in structural robustness and is suitable for the snake-imitation rescuing robot. By means of mutual cooperation of the two mechanism forms of the multiple metamorphic knuckles, the flexibility and adaptability of the snake-imitation rescuing robot under different environments can be effectively improved.

The invention provides a hoisting coupling device with cooperation of multiple cranes and a detection method, and belongs to a hoisting coupling device with cooperation of multiple cranes and dynamic detection thereof. The hoisting coupling device comprises an upper machine, a lower machine and three groups of coupling supports with the same structure. Each group of coupling support comprises a truss, and truss supporting plates arranged at two ends of the truss. A main hydraulic cylinder is arranged in the middle position of each truss supporting plate. four same sub-hydraulic cylinders are uniformly distributed around the main hydraulic cylinder. The bar heads of the main hydraulic cylinder and the sub-hydraulic cylinders are coupled with ring flanges through pherical hinges. The bar tails of the main hydraulic cylinder and the sub-hydraulic cylinders are coupled with ring flanges through pherical hinges. The ring flanges are fixed on a frame fixation plate through bolts. The frame fixation plate is connected with a chassis of a crane through bolts. Four pairs of rings are uniformly distributed in the truss supporting plates and the frame fixation plate. A tensioning wire rope is connected between each pair of rings. The hoisting coupling device has advantages of simple structure, stable coupling, reliable performances, strong bearing capability, strong adaptability and modularization, and can achieve rapid dismounting and installation.

The invention discloses a device and method for testing tensile and compressive creep of inter-hole rock bridges by using an expansion agent. The device comprises a rock sample for testing, wherein aplurality of small holes are processed inside the rock sample, the expansion agent is filled inside the small holes; a rock bridge is formed between two adjacent small holes, and distributed optical fibers, transparent mesh paper or stress monitoring points for measuring stress on the rock bridges are arranged in different regions of the rock bridges; steel plates are placed on both sides near therock bridges inside the small holes, and two adjacent steel plates are connected by steel bars. The method can monitor and measure various mechanical parameters and timely feedback on the force of the rock sample in real time, is simple in operation, low in cost and simple in structure, can be applied to quantity detection of tensile and compressive molds of rock samples of various shapes and sizes, and has a wide range of engineering practice significance and application prospects.

The invention discloses a supporting and hanging frame stress monitoring system for a main steam line of a thermal power generating unit. The system comprises at least one optical fiber grating stress sensor which is arranged on a supporting and hanging frame of the main steam line and connected with an optical fiber sensing demodulation system through a transmission optical fiber, wherein the optical fiber grating of the optical fiber grating stress sensor covers a C wave band, and the strain monitoring range is between 0-2%; and the optical fiber sensing demodulation system consists of a wideband light source, a channel switching module, a spectrum analysis module and an embedded processing module. By utilizing the system, the stress condition of all supporting and hanging frames of the main steam line of the whole thermal power generating unit can be monitored in real time for a long time with accurate and effective monitoring data, reliable monitoring data can be provided, technicians in a power plant are helped to accurately hold the stress condition of the whole line, and the tightness degree of the supporting and hanging frame can be adjusted according to the actual stress to ensure that the line stress achieves a perfect state, so that great maintenance cost of the supporting and hanging frame can be saved, and the service life of the line is prolonged by improving the line stress.

The invention provides a construction method of a suspension steel structure. The construction method comprises the steps that according to the preset positions and preset specifications of temporary diagonal tension braces of all floors obtained in advance, cantilever steel beams and the temporary diagonal tension braces of all the floors are installed layer by layer from bottom to top; according to the preset positions and preset specifications of temporary supports obtained in advance, the temporary supports used for supporting a top-layer cantilever steel truss are installed on the top faces of the cantilever steel beams of the topmost floor; the top-layer cantilever steel truss is installed above the cantilever steel beams located on the topmost floor to form a stable frame; hanging columns are installed on the top faces of the cantilever steel beams of all the floors layer by layer from top to bottom; and after all the hanging columns are installed, the temporary supports and the temporary diagonal tension braces are unloaded. According to the construction method, the stress requirement of the hanging columns can be met, construction is safe and controllable, the construction quality and precision can meet the design requirement, the construction efficiency is improved, and the construction cost is reduced.

The invention discloses an anchor rod (cable) drawing intelligent monitoring device, which comprises an anchor rod (cable), a hydraulic oil cylinder, a hollow hydraulic jack supported on the ground surface and a displacement sensor box body with a built-in laser wireless displacement sensor, the hydraulic jack is arranged in an inner cavity of the hydraulic oil cylinder, and clamps are arranged atthe upper end and the lower end of the hydraulic jack, a measuring rod is arranged on the displacement sensor box body, and a probe arranged at the top of the measuring rod is adsorbed to the lower portion of the hydraulic oil cylinder through a small powerful magnet. A traditional hydraulic mode is further improved, the intelligent wireless transmission technology is well combined, the stress condition and the relation between force and displacement in the anchor rod drawing process can be monitored in real time in the whole process, the anchoring quality and the maximum load value of the anchor rod are inspected, the supporting reliability is verified, and meanwhile, the quality problems of damage and breakage of the anchor rod, displacement of an anchoring section and the like possiblycaused by insufficient anchoring force of the anchor rod in field construction are solved.

The invention discloses a shield end cover fixed type multi-blade hobbing cutter which comprises a cutter ring, a wedge block, a cutter body, a bearing, a lining and a rotary shaft. A pressure monitoring system is installed in each blade, and different signal lines are adopted to monitor working states of hobbing cutter bodies. By means of the shield end cover fixed type multi-blade hobbing cutter, intelligentization level of the shield cutter is further improved, the service life of the hobbing cutter is prolonged, and a foundation is laid for improvement on the shield cutter. The shield end cover fixed type multi-blade hobbing cutter has the advantages of being low in manufacturing cost, easy to install, remarkable in using effect and the like.

The invention discloses a central shaft type inter-dimensional decoupling three-dimensional wireless passive sensor, which comprises a central shaft upper section, a bending moment upper sealing ring,a bending moment strain ring, a bending moment ejector rod, a bending moment outer supporting ring, a bending moment inner supporting ring, a central shaft middle section, a torque outer supporting shell, a torque transmission piece, a torque strain gauge, an axial force strain gauge, an axial force transmission piece, a central shaft lower section and an axial force outer supporting shell. According to the central shaft type inter-dimensional decoupling three-dimensional force/torque wireless passive sensor, the magnitude and the direction of each component force in the coupling force can bedetected at the same time, that is, the coupling force is subjected to structural decoupling; data does not need to be acquired through connection of a power supply line or through a wired interface;the sensor can be applied to the medical field and the human body implanted sensor direction, and greatly reduces the link of wire embedding or secondary operation in the human body after the sensoris implanted into the human body.

The present invention relates to a multidimensional rod structure array pressure sensor. The sensor comprises: a plurality of multidimensional rod sensors and wires. As shown in the figures, the multidimensional rod sensors generally comprise 3-8 rods, the rods are made of flexible piezoelectric materials, and the rods are subjected to tension, pressure or tension combined load to generate signals; the wires are configured to connect one single multidimensional rod sensor into a two-dimensional or three-dimensional array sensor; the signals generated by the sensor is led out through the wires; and the integration method thereof is configured to bury the array sensor into the composite material structure in the manufacturing process of the composite materials. The multidimensional rod structure array pressure sensor can detect the changing of the stress strain of the detection structure so as to detect the portions which are damaged and realize the safety service of the structure.

The invention discloses a bridge pushing and sliding device, which comprises upper and lower support plates respectively provided with grooves, spherical crown liners installed in the grooves of the upper support plates, spherical crown liners The upper plane of the spherical crown liner is in contact with the bottom of the groove of the upper support plate, and the lower spherical surface of the spherical crown liner fits with the radial end surface of the stud. The stud is connected to the lock nut and its upper flange is in contact with the upper support plate. The side wall of the lower support plate is in contact with the side wall; the piston rod is installed in the groove of the lower support plate, the piston rod is provided with a sealing ring that forms a seal with the side wall of the lower support plate, and the side wall of the lower support plate is installed with a screw thread with the piston rod The connecting limit ring, the bottom of the lower support plate is provided with a hydraulic hole connected to the hydraulic system and communicated with the annular flow channel at the bottom of the piston rod, and the lower support plate is embedded in the slideway. Its advantages are: it can meet the two requirements of force measurement and height adjustment at the same time, and it can monitor the force situation of the vertical support points in real time, so as to grasp the dynamic changes of the vertical force of each support point of the bridge.

The invention provides a grid displacement testing system and method based on a ten-shaft sensor. The grid displacement testing method comprises the steps that a ten-shaft sensor chip is embedded intoa geogrid; the ten-shaft sensor chip acquires data information of a monitoring point and uploads the data information to a monitoring cloud management platform; the monitoring cloud management platform obtains geogrid deformation amount and displacement change of the monitoring point through comprehensive analysis according to the acquired data information, conducts error correction processing onthe data information, reduces data error rate and improves data integrity rate; the monitoring cloud management platform synchronously updates the data information acquired by the ten-shaft sensor chip and analysis results to a monitoring database server; a remote monitoring center extracts data in the monitoring database server, obtains the width and extension trend of cracks produced by a wholestructure of the geogrid after further processing, monitors the overall damage trend of the geogrid in real time and finally achieves automatic monitoring of the overall state of the geogrid and early warning of geological disasters.

The invention discloses a real-time monitoring device and method for power transmission line phase-to-phase spacer waving tension. The system comprises a data collection front unit, a phase-to-phase spacer device, a communication converting unit and an industrial personal computer; the data collection front unit comprises a first tension sensor, a second tension sensor and a control module, the first tension sensor is connected with a phase-to-phase spacer of the power transmission line phase A-phase B, the second tension sensor is connected with a phase-to-phase spacer of the power transmission line phase B-phase C, the control module is connected with the first tension sensor and the second tension sensor separately, and signals are sent to the communication converting unit in a wireless communication mode; the communication converting unit transmits the received data to the industrial control computer. The stress phenomenon of the phase-to-phase spacers is obtained in time, electric workers can conveniently improve the design and layout of the phase-to-phase spacers according to the phase-to-phase spacer waving stress phenomenon, the reliability and effectiveness are improved, and finally the phase-to-phase spacer anti-waving effect is improved.

The invention discloses a bridge force-measuring swivel support with real-time monitoring function. The ball pendulum and the lower ball pendulum form a spherical friction pair, the wear-resistant plate is arranged between the upper ball pendulum and the lower ball pendulum, and the sensor mounting plate is fit and installed on the bottom of the lower ball pendulum and is provided with There are several grooves, and several sensors corresponding to the several grooves are arranged between the lower ball pendulum and the sensor mounting plate, and the sensors are connected to display instruments through sensor transmission lines. The invention has the advantages of good impact resistance and strong overload capacity, and can monitor the force applied to the support in all directions of the bridge beam body in real time during the process of rotating the bridge, and reflect the support reaction force on the display instrument through the sensor. In this way, the unbalanced force of the beam body can be quantified, and the stress on the bearing and bridge can be monitored in real time.

The invention discloses a deformable cave filling automatic simulation system. The deformable cave filling automatic simulation system uses a single cave model unit to simulate caves in different shapes, can simulate a practical cave through measurement, analysis, statistics and standard curing, can synthesize cave simulation of different shapes, can improve accuracy of the cave in an practical operation, can properly save filling energy, can monitor stress conditions inside the cave in real time and has strong controllability. The invention also discloses a multi-form cave filling simulationmethod. The multi-form cave filling simulation method adopts multi-form deformable cave units to automatically simulate a cave form, analyzes simulation numerical values as standard parameters and transmits the standard parameters into a practical cave filling control system. Data standards are embedded in a PLC control device for practical cave filling. The deformable cave filling automatic simulation system and the multi-form filling simulation method are easy to control filling of the cave, improve filling efficiency, simulate different data standards according to a specific geologic condition of the cave and satisfy cave filling of different geologic conditions.

The invention discloses a suspended member prestressed suspension cable rotating installation tool. The suspended member prestressed suspension cable rotating installation tool comprises a hinged load-bearing cable mechanism and a hinged lifting device. The hinged load-bearing cable mechanism comprises a traction load-bearing cable and non-traction load-bearing cables. The hinged lifting device comprises a traction cable, direction stabilizing cables, membrane ridge cables, a traction electric winch and stable electric winches. One ends of the traction load-bearing cable and the non-traction load-bearing cables are connected with the bottom end of the suspended member, and the other ends of the traction load-bearing cable and the non-traction load-bearing cables are connected with fixing steel columns. One end of the traction cable is connected with the top end of the suspended member, and the other end of the traction cable is connected with the traction electric winch fixed to one ofthe fixing steel columns. One ends of the direction stabilizing cables are connected with the top end of the suspended member, and the other ends of the direction stabilizing cables are connected with the stable electric winches fixed to fixing steel columns. Both ends of the membrane ridge cables are separately connected with the suspended member and the fixing steel columns. By using the suspended member prestressed suspension cable rotating installation tool, the installation of the suspended member is facilitated, and at the same time, the construction efficiency is improved.

The invention discloses a safety pin type anti-escape ball head seating device. The safety pin type anti-escape ball head seating device comprises a base, a force transducer, a transition flange, a ball support, a first safety pin, a second safety pin, a process ball head, a first safety pin connecting plate, a second safety pin connecting plate, a cylinder and a cylinder fixing seat, wherein the force transducer is arranged on the base; the ball support is connected with the force transducer through the transition flange; the process ball head is arranged in the ball support and is in spherical hinge connection with the bottom curved surface of the ball support; two parallel pin holes are formed in the ball support; the first safety pin and the second safety pin are inserted into the two pin holes respectively; two ends of the first safety pin and two ends of the second safety pin are connected through the first safety pin connecting plate and the second safety pin connecting plate respectively; the cylinder fixing seat is fixed on the ball support; the cylinder is fixed on the cylinder fixing seat; a piston rod of the cylinder faces the first safety pin connecting plate. The safety pin type anti-escape ball head seating device has two working modes, namely, ball head seating and escape prevention, can monitor pressure load of aircraft components to an attitude adjusting unit in real time and can meet the requirements of the attitude adjusting unit of an aircraft digital assembly system for hoisting seating and attitude adjusting of the aircraft components.

The invention relates to the field of additive manufacturing, in particular to a laser additive manufacturing device and method for manufacturing a large metal component. The method comprises the following steps of forming of a component, aftertreatment of the component, forming of the large metal component and aftertreatment of the large metal component. The laser additive manufacturing efficiency and the forming flexibility of the large metal component are improved, the forming problem of a single-size overlong component is solved, and meanwhile the forming quality of the large metal component is guaranteed.

The invention discloses an intelligent monitoring system of a distributor. The distributor comprises a distributor shell and a rotary barrel in the shell, wherein a tilting motor is horizontally arranged on the outer side of the distributor shell; a slide contact wire is mounted on the distributor shell. Compared with the prior art, the distributor has the characteristics that video monitoring equipment, intelligent detection equipment and intelligent lubricating equipment in the distributor are effectively powered by converting electrical energy of the slide contact wire in the distributor, so that the stress situation, the fatigue situation and the lubrication of parts in the distributor can be monitored in real time, faults are prevented, and the safety performance of the distributor is improved.

The invention relates to an intelligent force-measurement type laminated rubber bearing based on an optical fiber deformation sensor. The intelligent force-measurement type laminated rubber bearing comprises a laminated rubber bearing body and is characterized in that the optical fiber deformation sensor is arranged in the laminated rubber bearing body, an inhaul cable is arranged in the laminated rubber bearing body, one end of the inhaul cable is connected with the optical fiber deformation sensor, the other end of the inhaul cable is fixed to a steel plate in the laminated rubber bearing body, and the deformation sensor adapts to the deformation characteristic of the bearing under dead load and live load stress conditions. By the adoption of the intelligent force-measurement type laminated rubber bearing, sudden and accumulative damage of the bearing can be found in time and recorded, the service condition of the bearing is evaluated, and then reasonable treatment measures can be taken in time. By monitoring the stress condition of the bearing, the traffic load condition of a bridge can be reflected indirectly, and overload vehicles can be found in time.

The invention provides a tibial platform gasket. The tibial platform gasket comprises a shell, a stress measuring unit and a data transmission processing unit, and contact points are arranged on the shell; the stress measuring unit is arranged inside the shell and connected with the contact points to measure tension data of two preset areas of a joint soft tissue in contact with the shell; the data transmission processing unit is connected with the stress measuring unit and a terminal device, used for computing tension difference data of the two preset areas based on the tension data of the two preset areas and transmitting the tension difference data to the terminal device after the tension difference data is processed. Thus, it is possible to accurately measure the balance of the soft tissue in total knee arthroplasty, it is not necessary for a surgeon to make judgment based on experience, technique and subjectivity, and the standardization of a surgery and the final surgical effectare ensured. The problem of being unable to monitor in real time the stress condition of a prosthesis implanted into a human body after the total knee arthroplasty is solved.