605results about "Using fluid means" patented technology

The invention discloses an InSAR (Interferometric Synthetic Aperture Radar) deformation inversion method for lifting rail offset correction, and mainly relates to the technical field of surface deformation monitoring. In order to solve the problem that the deformation monitoring quantity of the existing multi-dimensional small baseline set formed aperture radar interference is obviously lower than the actual deformation quantity, a time sequence deformation observation equation is established by using multi-orbit synthetic aperture radar data, an ascending-orbit small baseline set InSAR settlement monitoring point cloud and a descending-orbit small baseline set InSAR settlement monitoring point cloud are calculated respectively, point cloud registration is carried out, and the settlement monitoring point cloud of the ascending-orbit small baseline set InSAR settlement monitoring point cloud is calculated to obtain the settlement monitoring point cloud of the descending-orbit small baseline set InSAR settlement monitoring point cloud. Calculating the offset of the monitoring result of the lifting rail in the vertical, east-west and south-north directions; calculating to obtain an ascending orbit incidence angle correction number and a descending orbit incidence angle correction number of the synthetic aperture radar image by using the offsets of the ascending orbit monitoring result in the vertical direction, the east-west direction and the south-north direction; and finally, constructing a multi-dimensional small baseline set InSAR deformation inversion model containing lifting rail offset correction, solving to obtain a corrected deformation monitoring quantity, and improving the deformation monitoring precision.

A topographical measurement system may include a tactile sensor using a contained fluid as an imaging medium.

The invention discloses a plunger piston shoe assembly inner contour measuring method, device and equipment and a storage medium, liquid is added into an inner contour space of a plunger piston shoe assembly, the liquid adding amount in the inner contour space and the pressure in the inner contour space are obtained, and the mapping relation between the liquid adding amount and the pressure is established, the inner contour space comprises a gap between the wrapping and pressing part and the ball head part, a ball head hole and a wrapping and pressing hole; a first area and a second area in the mapping relation are obtained, the first area is used for representing the relation between the liquid adding amount and the pressure when a part of the gap and the ball head hole are filled with liquid, and the second area is used for representing the relation between the liquid adding amount and the pressure when the other part of the gap is filled with the liquid; and establishing a coordinate system, and calculating the inner contour of the wrapping and pressing part according to the physical properties of the liquid, the first region and the second region. According to the method for measuring the inner contour of the plunger piston shoe assembly, the inner contour of the wrapping and pressing part of the plunger piston shoe assembly can be nondestructively detected.

The invention provides a shield tunnel ground surface settlement stress detection device and a pavement settlement treatment method, and relates to the technical field of shield tunnel construction. The detection device comprises a vertically arranged pipe body, the lower end of the pipe body is connected with a hollow elastic bag body, the upper end of the pipe body is connected with a water inlet pipe and an exhaust pipe, the water inlet pipe is provided with a pressure gauge and a water inlet valve, and the exhaust pipe is provided with an exhaust valve. According to the pavement settlement treatment method, an existing ground surface settlement detection mode is changed, measurement of the ground surface settlement amount is changed into measurement of the soil layer internal stress change amount, and a reliable basis is provided for pavement settlement treatment. According to the method, a ground surface settlement area and a soil layer stress reduction area can be quantitatively delineated according to the reduction amount of the water pressure of each elastic bag body, and then targeted grouting is performed, so that the soil layer stress is recovered to a stable and balanced state before tunnel excavation, and the problems of settlement and collapse of a paved pavement after a subway is opened are fundamentally solved.

The invention relates to the technical field of road detection, in particular to a multifunctional municipal road crack detection device which comprises a sweeping board, a detection mechanism is arranged at the top end of the sweeping board, the detection mechanism comprises a damping tube mounted above the sweeping board, a pressing rod slides in the damping tube, a probe is arranged at the bottom end of the pressing rod, and the probe is connected with the sweeping board. Dust and sundries around a crack are removed through a dust suction pump, the accuracy of measuring the depth of the crack through a probe is improved, an operator pulls a grip manually, the depth of the crack is accurately measured through scale marks on a damping pipe, data support is provided for repairing work, meanwhile, a pressing rod and damping liquid are used for pushing a push rod in a sleeve to move, and the repairing efficiency is improved. The position of the blocking plate is adjusted, the pigment flow is accurately controlled, the color depth is marked according to the crack depth, the severity of the crack is visually reflected, clamping of the clamping block and the clamping strip is controlled through air pressure change when the dust suction pump works, the probe is prevented from being damaged due to collision, the service life is prolonged, and the maintenance cost is reduced.

The invention relates to a part diameter measuring device which comprises a base which is provided with a supporting structure used for supporting a part; the two pneumatic measuring instruments are used for measuring the diameter of an outer circle and the diameter of an inner hole respectively, one pneumatic measuring instrument comprises an outer diameter measuring head, the other pneumatic measuring instrument comprises an inner diameter measuring head, the outer diameter measuring head and the inner diameter measuring head are connected to the base and are arranged at intervals in the axial direction of the inner diameter measuring head, and the inner diameter measuring head can rotate relative to the base around a first axis parallel to the axis of the inner diameter measuring head; when the measured part is arranged on the supporting structure, the measured part is located in the outer diameter measuring head, the outer circle axis of the measured part coincides with the first axis, and the inner diameter measuring head can rotate around the first axis to be coaxial with an inner hole of the measured part located on the supporting structure. The part driving mechanism is used for being connected with a tested part located on the supporting structure and used for driving the tested part to rotate around the first axis. The device can measure the outer circle diameter and the inner circle diameter of a part at the same time, and can rapidly complete the detection of the part.

The invention belongs to the field of aero-engines and gas turbines, and particularly relates to a rapid evaluation method for the consistency of the flow area of a guider, the flow area of the guider is evaluated by adopting a comparison method, a small-group ASME nozzle and a large-group ASME nozzle are prepared respectively, and a test system is established to calculate the relative geometric area of the two ASME nozzles, so that the consistency of the flow area of the guider is evaluated. The batch-produced to-be-detected guiders are placed in the same environment for detection, and the effective circulation area of each batch-produced to-be-detected guider is obtained through interpolation according to the interpolation calculation formula; and comparing the effective flow area values of the to-be-tested guiders produced in batches with the standard guiders to complete the consistency evaluation of the effective flow areas of the guiders produced in batches. The method has the advantages that the flow area is evaluated quickly, the measurement process is simple, and measurement within one hour can be realized; the guider does not need to be additionally processed, so that the operability is good; normal-temperature, low-speed and low-pressure air is used as a circulation medium, so that the measurement energy consumption is low; measurement parameters are few, and use is convenient.

The invention discloses a plunger piston shoe assembly inner contour measuring method, device and equipment and a storage medium, the plunger piston shoe assembly inner contour measuring method comprises the following steps: filling the inner contour space of a plunger piston shoe assembly with liquid; liquid in the inner contour space is discharged, the liquid discharge amount in the inner contour space and the pressure in the inner contour space are obtained, and the mapping relation between the liquid discharge amount and the pressure is established; a first area and a second area in the mapping relation are obtained, the first area is used for representing the relation between the liquid discharge amount and the pressure when the liquid in one part of the gaps and the liquid in the ball head hole are discharged, and the second area is used for representing the relation between the liquid discharge amount and the pressure when the liquid in the other part of the gaps is discharged; and establishing a coordinate system, and calculating the inner contour of the wrapping and pressing part according to the physical properties of the liquid, the first region and the second region. According to the method for measuring the inner contour of the plunger piston shoe assembly, the inner contour of the wrapping and pressing part of the plunger piston shoe assembly can be nondestructively detected.

A method of operating a laser additive manufacturing machine includes manufacturing at least one first fluid-flow coupon, that includes a plate defining a plurality of holes, at a corresponding beam offset value of the laser additive manufacturing machine. The method further includes disposing the at least one first fluid-flow coupon in a testing rig, directing a fluid flow towards the at least one first fluid-flow coupon, measuring a fluid flow rate through the at least one first fluid-flow coupon, determining a calibration curve by correlating a beam offset of the laser additive manufacturing machine with a flow parameter based on the fluid flow rate through the at least one first fluid-flow coupon and the corresponding beam offset value, determining a target beam offset value corresponding to a target flow value of the flow parameter, and calibrating and operating the laser additive manufacturing machine using the target beam offset value.

The invention provides a surrounding rock deformation monitoring device and method for a coal seam reaming and slotting cavity. The device comprises an elastic air bag, a liquid pumping assembly and a monitoring assembly, the liquid pumping assembly comprises a pump body, a liquid inlet pipeline and a liquid storage container; the monitoring assembly comprises a liquid outlet pipeline and a monitor; the elastic air bag is positioned in a reaming slotting hole in the coal seam; the pump body is used for pumping the liquid in the liquid storage container to the elastic air bag through the liquid inlet pipeline, so that the elastic air bag is expanded to the size of a hole for reaming and slotting; when the pressure of the liquid outlet pipeline in the elastic air bag is increased, liquid flows out; and the monitor is used for monitoring the liquid pressure and flow of the liquid outlet pipeline and determining the deformation information of the surrounding rock of the cut cavity based on the liquid pressure and flow. Therefore, according to the scheme, by monitoring the deformation condition of the surrounding rock of the slotting cavity in real time, the pressure relief timeliness of the reaming slotting cavity and the advanced mining influence range of the working face can be researched and analyzed.

The invention provides a template anti-expansion test device for bridge high pier construction, and relates to the technical field of template anti-expansion measurement, the template anti-expansion test device comprises three measurement support members, and the three measurement support members are provided with fluid measurement members; the fluid measuring piece is used for detecting template contour errors; a template leakage-proof measuring piece is mounted at the bottom of the lower measuring support piece; the formwork leakage-proof measuring piece is used for being attached to the outer wall of a high pier in an expansion mode, the fluid measuring piece and formwork expansion detection are comprehensive, omission is prevented, meanwhile, special-shaped formworks can be conveniently measured, adaptability is higher, meanwhile, detection work of an inner formwork and an outer formwork is achieved, detection is more efficient and direct, construction efficiency is ensured, and construction cost is reduced. The problems that an existing formwork anti-expansion testing device for bridge high pier construction is poor in measurement comprehensiveness, omission is prone to occurring, and the expansion conditions of an inner mold and an outer mold are inconvenient to measure at the same time are solved.

The invention relates to the technical field of karst cave exploration, and discloses deep hole karst cave exploration equipment which comprises a moving body, a center groove is formed in the center of the moving body, a deformation groove is formed in the side edge of the moving body in an up-down sliding mode, and a telescopic mechanism is arranged between the deformation groove and the side edge of the moving body. By arranging the detection body, the detector, the direction nozzle, the power nozzle, the stable extension pipe, the heat insulation flexible pipe and the like, the device can pass through a deep detection hole and enter a karst cave, the power nozzle sprays air outwards to drive the detection body to move forwards, and the detection body can be driven to move forwards. The direction nozzle sprays air to adjust the angle of the detection body, and the air drives the detection body to be flexibly utilized in the karst cave.

The invention discloses grouting body surface roughness measuring equipment and a measuring method, and the equipment comprises a sample forming device which comprises a sample forming box; the liquid injection device comprises a liquid injection container and a connecting pipe, the two ends of the connecting pipe are connected to the sample forming box and the liquid injection container respectively, and first liquid is loaded in the liquid injection container; the measuring device comprises a measuring container and a balance, the balance detects the weight change of the measuring container, and the measuring container is filled with second liquid; and the cooling device is connected with the sample forming box and transmits cold energy. By injecting the first liquid and adopting a cooling condensation mode, the process of actual grouting and waiting for slurry solidification is simulated, the condensation time is shorter so as to save the experiment time, and after the experiment, the sample can be heated to be melted and recycled, the experiment can be repeated for multiple times, and the waste of materials in the experiment process is reduced. Moreover, the second liquid is used for replacing traditional sand, and the second liquid can flow into various tiny gaps, so that the detection precision is higher.

The utility model discloses a flatness measuring device for constructional engineering, which relates to the technical field of flatness measurement and comprises a shell, a top cover is rotatably connected to the position, close to the left side, of the upper surface of the shell, and four universal wheels distributed in a rectangular shape are rotatably connected to the positions, close to the four corners, of the lower surface of the shell. The inner wall of the shell is movably sleeved with three powder storage boxes which are linearly arranged, and the lower surfaces of the three powder storage boxes are fixedly connected with marking structures. According to the flatness measuring device for constructional engineering, through movement of the shell, when the flatness measuring device encounters a concave place, the detection wheel descends, so that the discharging box located on the right side spills powder for marking, and when the flatness measuring device encounters a place protruding out of a plane, the detection wheel moves upwards, and the discharging box located on the left side spills powder for marking. And meanwhile, the detection wheel passes through the mark on the left side and is rolled, so that different marks can be distinguished.

The invention discloses a stator oil hole detection device based on air flow change and a detection method thereof, and aims to provide an efficient, accurate and reliable stator oil hole detection device based on air flow change and a detection method thereof. An oil hole detection device is arranged above the workbench, and a conveying device used for conveying a to-be-detected piece to a detection position is arranged below the workbench. The oil hole detection device comprises a rotating support arranged on the workbench, detection assemblies symmetrically distributed at the two ends of the rotating support, a driving assembly driving the rotating support to rotate, clamping air cylinders evenly and symmetrically distributed in the four directions of the rotating support, and air pressure detection pieces arranged on the clamping air cylinders. The detection assembly comprises a guide disc arranged on the rotating support and a plurality of plug pins evenly distributed on the guide disc, and the rotating support is provided with a displacement groove enabling the plug pins to act synchronously to be inserted into the oil holes. The method is suitable for the technical field of stator oil hole detection.

The invention provides a high-precision optical microcrystalline glass analysis system, and belongs to the technical field of microcrystalline glass detection. Wherein the detection core is arranged in the cylinder body in a sliding fit manner. The sleeve is connected with the detection core. One end of the driving rod is in sliding fit with the sleeve, and the other end is in transmission fit with the second driver. And a first elastic piece is abutted between the driving rod and the sleeve. The liquid storage pipe is arranged in the vertical direction, and the barrel is communicated with the liquid storage pipe. During detection, the controller is used for controlling the first driver to drive the barrel to be close to the objective table, so that the distance between the detection core and the objective table is a first preset distance. The controller is also used for determining the distance between the detection core and the surface of the glass-ceramic standard component according to the first preset distance and the thickness of the glass-ceramic standard component, and recording the distance as a standard distance. The controller is further used for controlling the second driver to drive the detection core to move towards the objective table by a second preset distance, and the second preset distance is larger than the standard distance. On the basis of guaranteeing the detection precision, the structure simplification and the low cost are realized at the same time.

The invention provides a broken paper judgment and recovery system which comprises a U-shaped mounting frame, an electric control box, an upper detection table, a lower detection table and a broken hole detection mechanism. The broken hole detection mechanism comprises a light transmitting plate, a net plate, a light emitting array, a light receiving array, a transverse electric sliding table, a vertical electric sliding table, a first electric push rod, a moving plate, a micro fan, a contact plate, a connecting rod, a diameter adjusting mechanism and an air volume sensor; whether a broken hole exists in the paper or not can be determined through the light transmission amount, the position of the broken hole is roughly determined, then the paper is moved to the net plate, the moving plates arranged up and down are moved to the position of the broken hole in the paper, the micro fan can blow air to the broken hole, and the contact plate can make contact with the bottom face of the broken hole in the paper. The diameter of the through hole can be adjusted through the diameter adjusting mechanism, and the hole diameter of the broken hole can be determined according to air volume data collected by the air volume sensor.

The invention relates to the field of height measurement, disclosing a method and a device for improving the stability of height difference measurement based on a corrugated tube. The method comprises: improving the structural stability of a height difference measuring device between a first pressure sensor and a second pressure sensor, obtaining the structural stability improvement result; collecting a first pressure from the first pressure sensor, detecting whether the first pressure is affected by external interference; when the first pressure is not affected by external interference, performing pressure screening on the first pressure to obtain a screening pressure, and calculating a first pressure average value of the screening pressure; collecting a second pressure from the second pressure sensor, calculating a second pressure average value of the second pressure; based on a historical pressure average value of the second pressure sensor, detecting the pressure accuracy of the second pressure average value; when the pressure accuracy is accurate, updating the second pressure by utilizing the second pressure average value to obtain an updated pressure; calculating the dynamic height difference of the height difference measuring device, utilizing the dynamic height difference to determine a dynamic stability improvement result of the height difference measuring device. The invention can ensure the stability of pressure measurement.

The invention belongs to the technical field of motor shaft casting detection, and particularly relates to a motor shaft casting strength detection device which comprises a detection table, a guide table, supporting frames, a closed type clamping mechanism and a resistance detection type strength measurement mechanism, the supporting frames are symmetrically arranged on the upper wall of the detection table, and the guide table is arranged on the upper walls of the supporting frames; the closed type clamping mechanism is arranged on the guide table, the resistance detection type strength measuring mechanism is arranged on the closed type clamping mechanism, and the closed type clamping mechanism comprises a guide mechanism, a wall attaching mechanism and an impurity removing mechanism. According to the strength detection device for the motor shaft casting, dust attached to the surface of the motor shaft casting can be cleaned through gas flowing force, and the accuracy of the strength detection result of the motor shaft casting through gas flow is improved.

The invention belongs to the technical field of mold detection, and particularly relates to a powder metallurgy mold contourgraph which comprises a base plate, an upper heat insulation seat and a lower heat insulation seat, the base plate is arranged between the lower heat insulation seat and the upper heat insulation seat, the outer side wall of the base plate is integrally formed and sleeved with a heat insulation frame, and the heat insulation frame is detachably connected with the upper heat insulation seat and the lower heat insulation seat. A controller is fixedly installed on the outer side wall of the heat insulation frame, and a movable mold is installed between the base plate and the upper heat insulation base. Whether the outlines of the movable die and the static die deviate or not can be judged at a time, step-by-step scanning is not needed, the detection efficiency is high, secondly, influence of dead angles of the die cavity is not likely to happen, detection is more accurate, meanwhile, impurities such as powder possibly left in the die cavity can be rapidly discharged before outline detection, and the detection accuracy is improved. The precision of contour detection is improved, and personnel can be reminded to increase the smearing amount and smearing uniformity of the mold release agent subsequently based on the powder concentration.

The invention discloses a device for detecting leakage of a fuel evaporation control system and a diagnosis method. The device comprises a communicating pipe, and the communicating pipe is provided with an air inlet end connected with the atmosphere and an air outlet end connected with an EVAP system in an on-off mode; the flow detector is used for detecting the flow of the gas; the pressure detector is used for detecting pressure; the calibration assembly comprises a plurality of standard holes and a plurality of switching parts; and the main control module is used for receiving the data from the flow detector to generate calibration data, and calculating the leakage equivalent aperture based on the calibration data and the current flow data when the air outlet end is connected with the EVAP system. According to the scheme, the flow is calibrated through the standard hole with the known hole diameter in the marking stage, and the corresponding relation between the flow and the hole diameter is established. During detection, the leakage equivalent aperture of the EVAP system is accurately calculated based on the calibration data and the flow detected by the flow detector, the severity of system leakage is judged, and the problem that an existing detection method cannot accurately judge the size of the leakage aperture is effectively solved.

The utility model provides a driving assembly, a vehicle and driving assembly detection equipment, and relates to the technical field of vehicle parts, the driving assembly comprises a driving shaft, a hub bearing and a fastener, one axial end of the driving shaft is provided with a first end face spline and a connecting shaft, one axial end of the hub bearing is provided with a second end face spline, and the connecting shaft is provided with a second end face spline. A bearing hole penetrating in the axial direction of the hub bearing is formed in the hub bearing, the driving assembly further comprises a sealing piece, the connecting shaft is sleeved with the sealing piece, the sealing piece is inserted into the bearing hole along with the connecting shaft, and the sealing piece is configured to enable the connecting shaft and the bearing hole to be assembled in a sealed mode when the first end face spline and the second end face spline are meshed. A cavity is formed among the inner wall of the bearing hole, the fastening piece, the connecting shaft and the sealing piece, and the driving assembly is further provided with a vent hole communicating the cavity with the external environment. Whether end face splines of a driving shaft and a hub shaft are assembled in place or not can be detected into whether a sealing piece seals a connecting shaft and a bearing hole or not, and the detection mode is simple and efficient.

Apparatus for determining a needle size including a phacoemulsification probe having a distal tip. The probe has an aspiration channel that transfers aspiration fluid from the distal tip and that has a first pressure sensor coupled with the channel, and an irrigation channel that transfers irrigation fluid to the distal tip and that has a second pressure sensor coupled with the channel. A needle-sleeve combination, consisting of a sleeve coaxially surrounding the needle, is coupled with the probe distal tip. A processor acquires from the first pressure sensor a first pressure profile of the aspiration fluid passing the first pressure sensor and acquires from the second pressure sensor a second pressure profile of the irrigation fluid passing the second pressure sensor. The processor formulates a difference between the two profiles, and determines the size of the needle of the needle-sleeve combination in response to the difference.

The invention belongs to the technical field of medical instrument evaluation, particularly relates to a tendon cross-sectional area measuring device and a tendon cross-sectional area measuring method, and provides the tendon cross-sectional area measuring device and the tendon cross-sectional area measuring method on the basis of a volumetric method and a die forming technology. The long and thin cylindrical measuring cylinder is used for containing normal saline, the pressure sensor is used for measuring the hydraulic pressure change caused by the fact that the tendon is immersed in the normal saline, then the liquid volume change is obtained, and the average cross sectional area of the tendon under the corresponding displacement is obtained based on the displacement of the tendon immersed in the liquid. Further, the minimum point of the tendon cross section area is accurately measured, and a reference is provided for a later tensile test.

The invention discloses high-precision automatic detection equipment and method for the collapse amount of an upper cover of a battery pack of a new energy automobile. The equipment comprises a rack, a detection platform, a profiling positioning block, a pressing mechanism, an operation unit and a pneumatic displacement sensor. The sensor consists of a fixed seat, a pneumatic unit and a contact piece with a magnet, wherein the magnet is adsorbed and fixed with a steel block on the fixed seat. The method comprises the following steps: matching and positioning the upper cover of the battery pack through the profiling positioning block, acquiring product identity information by the code scanning unit, clamping a workpiece by the pressing mechanism, enabling a contact piece of the pneumatic displacement sensor to be in contact with the surface of the upper cover, converting the sinking amount into an air pressure signal and detecting, and finally binding and storing the sinking amount and the identity information. According to the invention, rapid workpiece positioning, stable clamping and high-precision detection are realized, and the requirements of battery pack upper cover collapse amount full detection and data tracing in automatic production are met.

The utility model discloses an online depth gauge calibration device for an underwater vehicle, and belongs to the technical field of ocean detection equipment. Comprising a manual hydraulic pump, a pressure sensor, an underwater vehicle depth gauge and a base plate, the manual hydraulic pump and the pressure sensor are installed on the base plate, the underwater vehicle depth gauge is sealed in an end cover of an underwater vehicle, an output port is further formed in the base plate, the manual hydraulic pump is connected with the pressure sensor and the output port through oil pipes, and the pressure sensor is connected with the output port through an oil pipe. The output port is connected with a pressure output pipe, and the pressure output pipe blocks the end cover, so that the underwater vehicle depth gauge is located in a closed space, and the pressure sensor and the underwater vehicle depth gauge collect depth data at the same time in the same pressure environment. The device has the advantages that on-line calibration can be achieved on the underwater vehicle, the situation that the sealing performance of the pressure-resistant cabin of the underwater vehicle is affected due to disassembly and assembly of the depth gauge of the underwater vehicle is avoided, the pressure-resistant sealing test needing to be conducted again after disassembly and assembly each time is omitted, the calibration efficiency can be remarkably improved, and the cost is reduced.

The invention relates to the technical field of track plate monitoring, in particular to an intelligent track deformation monitoring system which comprises a detection unit used for displaying the liquid level height, an acquisition unit used for collecting liquid level height data and a conveying unit used for conveying the liquid level height data. The analysis unit is used for judging whether the track structure meets the standard or not based on the liquid level height data, analyzing the reason for not meeting the standard and generating a corresponding processing instruction; and the control unit is used for re-determining the operation parameters of the track deformation intelligent monitoring system based on the received processing instruction, and sending out a corresponding notice or sending out a track deformation alarm. According to the invention, real-time monitoring and accurate analysis of track deformation are effectively realized, and the use efficiency of the track is effectively improved.