32results about How to "Deformation monitoring" patented technology

The invention discloses a method for carrying out tunnel rapid deformation measurement by close-range photography. The method includes camera calibration for calculating the internal orientation element of an imaging system; image acquisition for placing a stereoscopic photography system in the tunnel to acquire the images of the measurement area; three-dimensional matching for giving the rough offset amount between the two images of the matched image pair; point cloud generation for generating the three-dimensional point cloud of the internal structure of the tunnel to construct a three-dimensional model; deformation detection for acquiring the three-dimensional point cloud generated at different time phase in the same region and fitting the generated three-dimensional point cloud by means of kriging interpolation to obtain a fitted curved surface, making the difference of the fitted curved surface at different time phases to obtain a point cloud interpolation graph, so that the deformation monitoring of the tunnel is realized. According to the method for carrying out the tunnel rapid deformation measurement by close-range photography, the photographing measurement is assisted bya multi-camera stereoscopic photography system to obtain the inner orientation element and the distortion parameter of the camera, so that the three-dimensional modeling of the surface of the tunnel is realized, and the deformation of the tunnel in the construction period is monitored.

The invention discloses a fiber-grating-based power transmission line iron tower deformation on-line monitoring device. The fiber-grating-based power transmission line iron tower deformation on-line monitoring device comprises a monitoring center, a substation and a monitoring terminal, wherein the substation and the monitoring terminal are connected with the monitoring center in sequence. The monitoring terminal comprises a plurality of fiber grating strain sensors. The fiber grating strain sensors are connected with a fiber grating demodulator in the substation through an OPGW. A fiber grating inclination sensor group is also connected with the fiber grating demodulator. The fiber grating inclination sensor group is connected with the fiber grating demodulator in the substation through an OPGW. The fiber grating demodulator is connected with a detection host. The detection host is also connected with a microclimate sensor. The problem that tiny deformation of an iron tower cannot be accurately monitored through an existing detection method is solved. The invention also discloses a monitoring method of the fiber-grating-based power transmission line iron tower deformation on-line monitoring device.

The invention relates to an online monitoring system for a GIS busbar barrel. The online monitoring system comprises a monitoring terminal arranged on the barrel and a data processing unit connected with the monitoring terminal, wherein the monitoring terminal comprises a pull rod resistance displacement rule used for detecting the axial displacement of a barrel wall relative to a support, a stay cord displacement sensor used for detecting the displacement of the barrel relative to the ground, and a three-axis acceleration sensor used for detecting the axial and radial warping degrees of the barrel relative to a horizontal plane. By adopting the monitoring system, real-time monitoring can be realized, routing inspection work of workers is reduced, and the labor cost is reduced. Meanwhile, the operation safety of a busbar is improved, accidents, such as cracking of a busbar support, can be effectively prevented, and safety hazards and economic loss caused by bad breakdown repair can be avoided. The system is particularly applied to northwestern districts with a high diurnal temperature difference, high altitude regions, tundra regions and southern geological sedimentation districts.

The invention belongs to the field of a volume pump, and particularly relates to a convenient-to-dismount diaphragm pump with the advantages that the monitoring can be realized in proper time, and a diaphragm leaf can be fast dismounted and replaced on line. The convenient-to-dismount diaphragm pump comprises a pump body and the diaphragm leaf, wherein liquid inlet and outlet holes and hydraulic holes are respectively formed in the pump wall of the pump body, a located pump cavity of the liquid inlet and outlet holes and a located pump cavity of the hydraulic holes are separated through the diaphragm leaf, the pump body also comprises a repair hole, the repair hole is sealed by an end cover, the appearance of the diaphragm leaf is of a sleeve-shaped structure, a pipe opening formed at one end of the diaphragm leaf is fixedly connected with the hole end surface of the hydraulic holes through screw bolts, a pipe opening formed in the other end of the diaphragm leaf extends towards the repair hole and is provided with an outer flange, the outer flange is arranged in a way of being matched with the surfaces between the hole ends, positioned at the outer wall parts of the the pump body, of the repair hole, and the end cover is pressed on the outer flange and is arranged in a way of being fixedly connected with screw bolts arranged between the pump walls of the pump body. The convenient-to-dismount diaphragm pump has the advantages that the monitoring and dismounting problems of the exiting conventional diaphragm pump can be effectively solved, the dismounting convenience and the maintenance replacement efficiency are high, and the work intensity of maintenance personnel can be greatly reduced.

The invention discloses a freezing and thawing cycle action based model test box for a tailing dam, and belongs to the technical field of model tests for dam bodies. The freezing and thawing cycle action based model test box for the tailing dam comprises a main box body and a model box, wherein the main box body comprises a heat-preservation box body; the front of the heat-preservation box body is provided with a box door; the top of the heat-preservation box body is provided with a heating-up device; the bottom of the heat-preservation box body is provided with a transmission bottom plate; a first temperature sensor is arranged inside the heat-preservation box body; the rear part of the heat-preservation box body is provided with a compartment; an upper part in the compartment is provided with an air blowing device; the heat-preservation box body which is right ahead the air blowing device is provided with an air ventilation hole; a condensing pipe is arranged inside the compartment; the outer side of the heat-preservation box body is provided with an operation and display double-function panel; the model box comprises a thermal-insulation box body; the inner side wall of the thermal-insulation box body is provided with a stress sensor; a second temperature sensor and a pressure sensor are arranged in the thermal-insulation box body; the thermal-insulation box body is provided with a transverse constraining component, a vertical loading device and a displacement and deformation monitoring device.

The invention discloses a steel truss girder chord member three-direction deformation monitoring and early warning device and an installation method thereof. The steel truss girder chord member three-direction deformation monitoring and early warning device comprises a box-shaped shell. A transverse deformation monitoring mechanism, a vertical deformation monitoring mechanism and a longitudinal deformation monitoring mechanism are sequentially arranged in the box-shaped shell from left to right at intervals, each monitoring mechanism comprises a displacement amplifying unit and a signal transmitting unit, and even micro deformation of a steel truss chord member can be monitored through cooperation of the displacement amplifying units and the signal transmitting units. Corresponding deformation data are obtained through terminal equipment, and meanwhile, when the deformation exceeds a set threshold value, early warning is carried out; in addition, the device further comprises a displacement conduction mechanism and a leveling mechanism, and a plurality of devices can be arranged on the steel truss girder chord member to be detected in an end-to-end connection mode, and initial position adjustment is carried out. The deformation monitoring and early warning device is reasonable in structural design, high in monitoring precision, convenient to install and capable of monitoring and early warning the steel truss chord member in real time in an all-around mode, and it is guaranteed that a bridge runs safely all the time.

The invention discloses a monitoring device for internal deformation and fine particle loss of a track subgrade, and relates to the field of monitoring devices; it includes an internal damage monitoring device arranged in the ballast layer of the roadbed, and the internal damage monitoring device is connected with a resistance collector through a wire. The resistance collector is wirelessly connected with a resistance signal receiver. The device for monitoring the internal deformation and loss of fine particles of the rail subgrade provided by the present invention can realize real-time and continuous monitoring of the deformation and loss of fine particles in the railway subgrade under rail traffic load under remote conditions, and is economical and convenient, and has high practical value.

The present invention relates to a spring for a preloaded bearing, in particular a rolling bearing, with an elastomeric core, wherein the elastomer core comprises a support sleeve of a hardenable material is disposed cohesively, and is formed less elastic than the elastomeric core. The present invention also relates to a structural component, which comprises a housing member, a bearing and the spring.

The invention belongs to the field of a volume pump, and particularly relates to a convenient-to-dismount diaphragm pump with the advantages that the monitoring can be realized in proper time, and a diaphragm leaf can be fast dismounted and replaced on line. The convenient-to-dismount diaphragm pump comprises a pump body and the diaphragm leaf, wherein liquid inlet and outlet holes and hydraulic holes are respectively formed in the pump wall of the pump body, a located pump cavity of the liquid inlet and outlet holes and a located pump cavity of the hydraulic holes are separated through the diaphragm leaf, the pump body also comprises a repair hole, the repair hole is sealed by an end cover, the appearance of the diaphragm leaf is of a sleeve-shaped structure, a pipe opening formed at one end of the diaphragm leaf is fixedly connected with the hole end surface of the hydraulic holes through screw bolts, a pipe opening formed in the other end of the diaphragm leaf extends towards the repair hole and is provided with an outer flange, the outer flange is arranged in a way of being matched with the surfaces between the hole ends, positioned at the outer wall parts of the the pump body, of the repair hole, and the end cover is pressed on the outer flange and is arranged in a way of being fixedly connected with screw bolts arranged between the pump walls of the pump body. The convenient-to-dismount diaphragm pump has the advantages that the monitoring and dismounting problems of the exiting conventional diaphragm pump can be effectively solved, the dismounting convenience and the maintenance replacement efficiency are high, and the work intensity of maintenance personnel can be greatly reduced.

The invention discloses a device for monitoring internal deformation and fine particle loss of a track roadbed, and relates to the field of monitoring devices. The device for monitoring internal deformation and fine particle loss of the track roadbed comprises an internal damage monitoring device arranged in a roadbed railway ballast layer; the internal damage monitoring device is connected with aresistance acquisition instrument through a wire; and the resistance acquisition instrument is wirelessly connected with a resistance signal receiver. According to the device for monitoring the internal deformation and the fine particle loss of the track roadbed, real-time continuous monitoring of the deformation and the fine particle loss in a railway roadbed under a rail traffic load under a remote condition can be realized, the device is economical and convenient, the practical value is higher.

The invention relates to a multi-dimensional seismic isolation support based on vertical variable stiffness and horizontal self-return. The support is mainly composed of a sleeve component, a lower connecting plate, a side coaming, concrete, an upper connecting plate and SMA self-return assemblies; under strong vertical seismic excitation, an inner core is bent, and the vertical rigidity of the support is greatly reduced so as to realize seismic isolation; in the horizontal direction, lantern rings are welded to the upper portion of the inner core, the lantern rings are connected through the SMA self-return assemblies, the lantern rings are connected with the side coaming through the SMA self-return assemblies, a structural seismic isolation layer can laterally move to a certain degree toachieve horizontal seismic isolation, and returning can be achieved through the SMA self-return assemblies after lateral movement; and a sensor can be arranged at the position where the inner core possibly makes contact with an outer pipe so as to monitor the working state of the support. Compared with the prior art, the support realizes multi-dimensional seismic isolation through the rigidity change after a pressing rod is bent and the characteristic of self-return after horizontal lateral movement, is suitable for structural multi-dimensional seismic isolation with a vertical vibration control function, and has the characteristics that the structure is simple, the cost is relatively low, and the reliability is relatively high.

The invention relates to a multi-dimensional shock-isolation bearing based on vertically variable stiffness and horizontal self-resetting, mainly composed of a sleeve member, a lower connecting plate, a side panel, concrete, an upper connecting plate, and an SMA self-resetting component. Under strong vertical earthquake excitation, the inner core buckles, and its vertical stiffness will be greatly reduced to achieve seismic isolation; in the horizontal direction, the upper part of the inner core is welded with collars, and the SMA self-resetting components are passed between the collars and the collar and the side wall Connection, the structure isolation layer can have a certain side shift to achieve horizontal vibration isolation, and can be reset through the SMA self-resetting component after the side shift occurs. Sensors can be arranged at positions where the inner core and the outer tube may come into contact to monitor the working state of the support. Compared with the prior art, the present invention utilizes the stiffness change after buckling of the compression bar and the self-resetting characteristics after horizontal lateral displacement to realize multi-dimensional seismic isolation, which is suitable for multi-dimensional seismic isolation of structures in which vertical vibration plays a controlling role, and has a simple structure , low cost and high reliability.

The invention discloses a large hydraulic press crossbeam parallel control system. The large hydraulic press crossbeam parallel control system comprises a hydraulic press crossbeam physical system and an upper computer virtual system which are connected through communication modules. The hydraulic press crossbeam physical system comprises a hydraulic press crossbeam, a plurality of displacement sensors and a plurality of pressure sensors which are arranged at stress concentration positions of the hydraulic press crossbeam, and a PLC; both the displacement sensors and the pressure sensors are connected with the PLC; the upper computer virtual system comprises failure service information and management control information which are directly in communication with and in handshake with the PLC, hydraulic press crossbeam finite element analysis modules are transmitted to hydraulic press crossbeam ideal digital analogy, then the management control information is obtained through a contrastive analysis, and the management control information is in handshake with the PLC through the communication modules. According to the large hydraulic press crossbeam parallel control system, fault emergency monitoring efficiency is improved, and useful empirical data for optimization design of the large hydraulic press in later period, compensation of deflection deformation and the like are provided.

The invention relates to an online monitoring system for a GIS busbar barrel. The online monitoring system comprises a monitoring terminal arranged on the barrel and a data processing unit connected with the monitoring terminal, wherein the monitoring terminal comprises a pull rod resistance displacement rule used for detecting the axial displacement of a barrel wall relative to a support, a stay cord displacement sensor used for detecting the displacement of the barrel relative to the ground, and a three-axis acceleration sensor used for detecting the axial and radial warping degrees of the barrel relative to a horizontal plane. By adopting the monitoring system, real-time monitoring can be realized, routing inspection work of workers is reduced, and the labor cost is reduced. Meanwhile, the operation safety of a busbar is improved, accidents, such as cracking of a busbar support, can be effectively prevented, and safety hazards and economic loss caused by bad breakdown repair can be avoided. The system is particularly applied to northwestern districts with a high diurnal temperature difference, high altitude regions, tundra regions and southern geological sedimentation districts.

The invention discloses a mine goaf deformation and stability evaluation method based on Bouguer gravity anomaly. The mine goaf deformation and stability evaluation method comprises a step1, arrangement of relative gravimeter observation points; a step2, arrangement of base points; a step3, erecting of gravimeters and absolute gravimeters; a step 4, acquisition of relative gravity observation values and absolute gravity observation values; a step 5, the acquisition of the deformation amounts of the relative gravity observation points; a step 6, drafting of a relative gravity observation point deflection curve and acquisition of stable deformation amounts. The mine goaf deformation and stability evaluation method is advantageous in that the steps are simple, a design is reasonable, costs are low, and use operation is convenient; by adopting the Bouguer gravity anomaly, the deformation amounts of the mine goaf is monitored, and monitoring results are accurate; the stability of the mine goaf is evaluated according to the deformation amounts of the mine goaf, and the stable deformation amounts of the mine goaf are acquired, and practicability is strong.

The invention discloses an underground chamber whole-section deformation automatic monitoring device and a method involved in the device. The underground chamber whole-section deformation automatic monitoring device comprises an angle measurement mechanism and a distance measurement mechanism. The angle measurement mechanism is provided with a pointer, a dial, a gradienter, a base and a fixing hole. The distance measurement mechanism is provided with a rotary body, a bearing, a rotary rod, a fixing nut, a laser probe and a displayer. Through efficient coordination of the angle measurement mechanism and the distance measurement mechanism, deformation of any point of the chamber section, the over-excavated volume and the excavated volume of the chamber section at the monitoring point and the supporting thickness of a gunite layer of a chamber can be measured, and the purpose that deformation of each portion of the chamber is accurately, efficiently and rapidly measured is achieved.

The invention provides a permeability test experimental system of low-permeability clay, and belongs to the field of geotechnique clay permeability tests. The system comprises a water head supply unitcapable of supplying tiny water heads and high-pressure water heads, a sample treatment unit for clamping and pressurizing samples, a water supply and storage unit for providing percolating fluid andcollecting the fluid, a data acquiring and processing unit for acquiring and processing experimental data, and an incubator for controlling experimental environments. According to the system, the principles of variable water heads and constant water heads of the geotechnique permeability tests are combined, the modern data acquisition technology is introduced, and the test precision is effectively improved. On the aspect of scientific research, a device can provide temperatures, loads and water head differences to be used as variables, when low-permeability clay samples with different water contents are provided, the water contents can serve as variables for permeability research of the samples, and application of conversion between the constant water heads and the variable water heads can be carried out. On the aspect of engineering parameter requirements, the device can adopt the high-pressure variable water heads to test the permeability coefficient of the low-permeability clay, and the experimental time is effectively shortened.

The present invention relates to a spring for a preloaded bearing, in particular a rolling bearing, with an elastomeric core, wherein the elastomer core comprises a support sleeve of a hardenable material is disposed cohesively, and is formed less elastic than the elastomeric core. The present invention also relates to a structural component, which comprises a housing member, a bearing and the spring.

The invention discloses a method for real-time prediction of the risk of tower sweeping when blades pass through the tower. By installing a millimeter-wave radar at a preset position at the tail of the wind turbine nacelle, reliable measurement information is collected and a clearance model of the wind turbine tower is established; using millimeter-wave The radar detects the overall blade passing through the designated area in the rotation plane of the wind rotor to obtain the spatial position and deformation velocity information of the target point when the blade passes through the designated area in the rotation plane of the wind rotor, and calculates the clearance value at each target point and each target point The amount of deformation when passing through the tower, and assess the risk of blade sweeping the tower, and make different control actions according to the risk level. The invention can predict the tower-sweeping risk when the blades pass through the tower for a certain time in advance, and simultaneously monitor the clearance values ​​of multiple target points and the deformation when passing through the tower, thereby improving the reliability and safety of the system.

The invention provides a self-expansion anchor rod device with a displacement monitoring function. The problems that an existing anchor rod is insufficient in force bearing point, the force bearing point of an anchoring section is prone to being damaged, finally, the effect of the anchor rod is poor, and rock mass deformation cannot be monitored at different levels are solved. The lower end of each sleeve is connected with one end of a displacement sensor, the other end of the displacement sensor on the sleeve at the lowest end is connected to an anchoring end, the other ends of the other displacement sensors are connected to the end face of an adjacent circular truncated cone, a first through hole is formed in the sleeve on one side of each displacement sensor, and a second through hole is formed in the axial outer portion of each sleeve. The device further comprises a wireless signal transmitting device. A wire of each displacement sensor sequentially passes through the first through hole of the sleeve at the axial outer end of the displacement sensor, an inner cavity of the sleeve and the second through hole to be connected to the wireless signal transmitting device. The self-expansion anchor rod device further comprises a wireless signal receiving device used for receiving signals of the wireless signal transmitting device. The wireless signal receiving device is connected with a monitoring host.