72results about How to "Easy to install and test" patented technology

The invention discloses a method and a device for high-speed and accurate measurement of a tunnel section. The method comprises the steps as follows: overlapping a plurality of linear lasers end to end so as to obtain a large-angle tunnel section; synchronously acquiring laser profiles by a plurality of high-speed cameras, and carrying out image processing on the laser profiles; and carrying out model calculation from image coordinates to space coordinates so as to obtain a real coordinate of the tunnel section. The device comprises a laser scanning and distance measuring module, a photography measurement module and a data acquiring and processing module. According to the invention, the laser scanning and distance measuring technology and the photogrammetric triangulation technology are combined, the problem of difficultly processed data due to large data quantity in high-speed dynamic detection is solved, and the measurement requirements of high speed and high precision are satisfied. In addition, the device has the characteristics of compact structure and convenience in mounting and measurement.

The invention discloses a method for diagnosing the bridge arm IGBT open-circuit fault of an energy storage converter exteriorly. The method comprises the following steps: detecting a three-phase current on the alternating current side of the energy storage converter through a current transformer; calculating the fundamental component, the second harmonic component and the direct current component of the three-phase current through Fourier transform; respectively calculating the second harmonic contents of the three-phase current; when the second harmonic content of any phase in the three-phase current exceeds a preset threshold value, judging that an open-circuit fault occurs in an IGBT of the phase; when the open-circuit fault occurs in the IGBT of any phase in the three-phase current, if the direct current component of the phase is larger than zero, judging that the open-circuit fault occurs in an upper bridge arm IGBT of the phase; if the direct current component of the phase is smaller than zero, judging that the open-circuit fault occurs in a lower bridge arm IGBT of the phase. Based on the second harmonic detection of alternating current and the direct current component detection, the method can accurately and effectively diagnose the bridge arm IGBT open-circuit fault of the energy storage converter, and thus guaranteeing safe and stable operation of an energy storage system.

The invention belongs to an aircraft strength testing technology, and relates to a loading device under the condition that a wing is largely deformed. The loading device for aircraft wing large deformation tests comprises a frame, an actuator cylinder, rolling wheels, roller wheel supports, starting bolts, a steel cable, guide wheels and a movable bearing beam. One end of the actuator is connected with the bottom of the frame while the other end is connected with the movable bearing beam. Two rolling wheel supports are respectively mounted at two ends of the movable bearing beam, and the bosses of the two rolling wheel supports respectively stretches into chutes in inner side surfaces of two sides, being close to the bosses, of the frame. The four guide wheels and the starting bolt are mounted on the movable bearing beam, two guide wheels are mounted at the top of the frame, after a ring at one end of the steel cable is connected to the starting bolt, the other end of the steel cable penetrates out from the top of the frame after sequentially winding around the guide wheels. The loading device provided by the invention is of an integrated frame structure, is convenient and safe to mount for test, high in control accuracy, and flexible in motion of the movable bearing beam and coordinating when in loading, and can meet the loading requirement on large deformation of the wing.

The invention provides a measurement instrument for the radial loading torque of a bearing, and the measurement instrument comprises a drive device, a torque sensor, a support seat, a loading device,an outer ring fixing device, and a control unit. One end of the torque sensor is connected with the drive device through a first shaft coupler, and the other end of the torque sensor is connected withone end of a rotating shaft through a second shaft coupler, wherein the other end of the rotating shaft passes through an inner ring of a bearing sample, and an outer ring of the bearing sample is provided with the outer ring fixing device which is used for fixing the outer ring of the bearing sample. The outer ring of the bearing sample is provided with the loading device, and the control unit is connected with the drive device, the torque sensor, and the loading device. The measurement instrument is simple in implementation operation, is accurate in test result, is convenient in testing andinstallation and is stable in test process. Moreover, a torque value can be displayed through the graphic data during the test, which is more visual and clear, and facilitates the inquiry for findingthe defects.

The present invention relates to an optical module high-and low-temperature test device. The optical module high-and low-temperature test device is used for testing an optical module. The optical module high-and low-temperature test device comprises a base and a test frame arranged on the base; the optical module is arranged on the test frame; a thermocouple probe is arranged above the test frame; the thermocouple probe contacts with the optical module arranged on the test frame; and the thermocouple probe is fixed through a support. According to the optical module high-and low-temperature test device, the thermocouple probe is fixed through the support, and therefore, after the optical module is fixed on the test frame, the thermocouple probe can directly contact with the optical module, and thus, installation and testing techniques are convenient; the thermocouple probe does not move, so that the problem of inaccurate test data caused by the change of the displacement of the thermocouple probe can be avoided. Compared with the prior art, the optical module high-and low-temperature test device is simple in structure.

The invention discloses terminal correctional storage box installation equipment. The terminal correctional storage box installation equipment comprises a base, a translation mechanism, a lifting mechanism, a rotating mechanism and an installation arm. According to the terminal correctional storage box installation equipment, the accurate adjustment in all directions of snatching, overturning, up and down, left and right, swinging, front and back, rotating, fine adjustment and the like can be conducted on a storage box, the installation quality can be effectively ensured, conveying and positioning of the storage box are achieved, operation is simple and convenient, and safety and stability are achieved; the adaptability of the equipment is high, installation can be conducted on similar parts of products of various types, operation is simple and convenient, control is accurate, safety and reliability are achieved, and the equipment has a good application prospect and can be conveniently expanded to installation testing of parts of products of other types.

A split cylindrical resonant cavity comprises an upper cylindrical resonant cavity body and a lower cylindrical resonant cavity body which are separated from each other. The upper cylindrical resonant cavity body comprises an upper-portion cylindrical cavity body with one end closed and one end open, a pair of upper-portion strip-shaped conductor flanges, an upper-portion coupling ring and an upper-portion coaxial transmission line, the upper-portion strip-shaped conductor flanges are arranged on the open end of the upper-portion cylindrical cavity body, the upper-portion coupling ring is arranged inside the upper-portion cylindrical cavity body, the upper-portion coaxial transmission line is connected with the upper coupling ring and penetrates the top wall or the side wall of the upper-portion cylindrical cavity body to connect the upper-portion coupling ring to the outside; the lower cylindrical resonant cavity body comprises a lower-portion cylindrical cavity body with one end closed and one end open, a pair of lower-portion strip-shaped conductor flanges, a lower-portion coupling ring and a lower-portion coaxial transmission line, the lower-portion strip-shaped conductor flanges are arranged on the open end of the lower-portion cylindrical cavity body, the lower-portion coupling ring is arranged inside the lower-portion cylindrical cavity body, the lower-portion coaxial transmission line is connected with the lower coupling ring and penetrates the top wall or the side wall of the lower-portion cylindrical cavity body to connect the lower-portion coupling ring to the outside.

A dielectric property testing method for dielectric materials includes connecting an upper coaxial transmission line and a lower coaxial transmission line with a vector network analyzer, enabling an upper cylindrical resonance cavity and a lower cylindrical resonance cavity to be aligned to each other and contact, stimulating a TE0np resonance mode in the cylindrical resonance cavity so that insertion loss of resonance peak in the upper cylindrical resonance cavity and the lower cylindrical resonance cavity is at the minimum, and measuring cavity resonance frequency and quality factor; arranging a dielectric substrate to be tested between an upper strip-shaped conductor flange and a lower strip-shaped conductor flange; stimulating the TE0np resonance mode in the cylindrical resonance cavities and adjusting a coupling ring to enable the insertion loss of the resonance peak in the upper and lower cylindrical resonance cavities to be the minimum, and measuring the prediction value of relative dielectric constant of the dielectric substrate to be tested; calculating dielectric property parameter value of the dielectric materials of the dielectric substrate to be tested.

The invention provides a system for testing dielectric properties by using a strip line testing method. The system comprises laminated testing samples, a testing clamp, a pressure device, a first coupling device, a second coupling device, a first displacement table, a second displacement table, a vision amplification system, a vector network analyzer and a control processing device, wherein the testing clamp is used for clamping the laminated testing samples; the pressure device is used for applying pressure to the testing clamp so as to remove residual air in the laminated testing samples; the first coupling device is coupled with a first end of the testing clamp; the second coupling device is coupled with a second end of the testing clamp; the first displacement table is fixed with the first coupling device; the second displacement table is fixed with the second coupling device; the vision amplification system is used for assisting in coupling between the testing clamp and the first coupling device and coupling between the testing clamp and the second coupling device; the vector network analyzer is connected with the first coupling device and the second coupling device; and the control processing device is connected with the vector network analyzer.

The invention relates to a case mold delivery mechanism in a continuous mold. A power plant, a cam, a slide rail and a follower are arranged in a platform, wherein, the follower is connected with the case mold; the case mold is arranged on a slide rail; the rotation of a power plant is capable of driving the cam to rotate, and the rotation of the cam is capable of driving the follower to move the case mold forward or backward; a plurality of sets punch die devices are arranged above the case mold; the case mold can be moved to below any punch die device for carrying out the punching operations. Through the design, the invention can replace a clamping transfer in the prior art, thus improving stability and accuracy of the production.

The invention provides a fluid filling and recovery device. The device comprises a first module; a second module and a connecting pipe; the first module comprises a first channel block, wherein the channel block is provided with a first fluid channel and a fluid connector connected with the fluid filling and recovery device, the first channel block is provided with a filling control valve and a recovery control valve, and the first fluid channel is communicated with the fluid connector and the filling control valve and is communicated with the fluid connector and the recovery control valve; the second module comprises a second channel block provided with a second fluid channel, the second channel block is provided with a connector used for installing a fluid ingredient separating device and is communicated with a connector used for installing the fluid ingredient separating device; the connecting pipe is externally provided with a first channel block and a second channel block and is communicated with the fluid channel and the second fluid channel through fluid. According to the fluid filling and recovery device provided by the invention, the arrangement of the channels can be simplified when all functions can be realized, and the space needed by the channels can be saved; furthermore, the fluid filling and recovery device is likely to be dismounted and detected.

The invention discloses a part air tightness detection device and a detection method thereof, which sequentially comprise from bottom to top: a base plate, a support rod, an upper connecting plate, a hydraulic action rod, and a tooling mechanism; wherein, the two sides of the base plate are arranged symmetrically There is a threaded hole for installing the support rod; a through hole is processed at the center of the bottom plate; the tooling mechanism includes: a mounting slot for detecting the outer contour of the workpiece, a tooling platform, and an overvoltage protection mechanism; the center position of the tooling platform is An air inlet installation hole is provided; the upper end surface of the tooling platform is provided with a detection workpiece outer contour installation card slot installation position; the detection workpiece outer contour installation card slot passes through the detection workpiece set on the upper end surface of the tooling platform The outer contour installation card slot installation position is fixedly installed on the upper end surface of the tooling platform; the overpressure protection mechanism includes: a hydraulic rod, and a pressure regulating valve; the pressure regulating valve is used to control the bearing pressure of the hydraulic rod .

The invention discloses a test board for a magnetic motor, and belongs to the technical field of tests for motors. The test board specifically comprises a rack, wherein a test head assembly and a protection arm assembly are arranged on the rack; the test head assembly is in drive connection with the motor fixed in the rack; a protection arm is arranged just above the test head assembly, and hinged with the rack. The test board disclosed by the invention is capable of meeting various tests on the performances of magnetic motors with different structures, high in universality, safe and reliable in test, and capable of increasing the test efficiency.

The invention relates to an electric locomotive speed reducer assembly noise testing device and a testing method thereof. The electric locomotive speed reducer assembly noise testing device comprisesa rack, a speed reducer connecting mechanism, a half-shaft axle housing connecting mechanism and a load mechanism are connected with the rack, and the speed reducer connecting mechanism comprises a transmission mechanism which comprises a rotating base and a motor connecting flange base; the speed reducer assembly is pressed on the rotating base through a first driving air cylinder, the motor connecting flange base is connected with a driving motor in driving connection with the speed reducer assembly, the half-shaft axle housing connecting mechanism comprises an axle housing body, an upper axle housing body connecting oil filling port, a lower axle housing body connecting oil filling port and an oil drain valve, two half shafts penetrate through the two sides of the axle housing body, andthe axle housing body is further connected with a second driving air cylinder. The load mechanism comprises a sliding shaft, the two ends of the sliding shaft are connected with a rotating shaft anda third driving air cylinder respectively, the rotating shaft is connected with a disc brake disc, and the sliding shaft matching the disc brake disc is connected with disc brake pincers. The electriclocomotive speed reducer assembly noise testing device and the testing method thereof are used for testing noise generated when the speed reducer assembly runs, and testing installation and operationare simple.

The invention discloses a building insulation board detection device comprising a machine body, a display screen is arranged at the lower end of one side of the machine body, and a control panel is arranged on the outer surface of one side of the display screen. A numerical value of the device is set through a rotary button, then test operation is performed through an operation button, an operator can observe test data through the display screen so as to record the test data, and a charging device can place the equipment on a charger for direct charging, transmit power through a charging wire, connect a charging chassis for conversion and finally contact a charging sensor. The advanced induction technology is adopted on the sensor, charging is convenient, a multi-hole socket device can provide a plurality of connectors during use, different test heads can be conveniently installed and tested, a test extrusion device can ensure the high-efficiency stability of the test during the test, and the damage of the test guide pin caused by the test is reduced. And a test guide pin can be directly inserted into the insulation board for testing, so that the working efficiency is greatly improved, and the practicability is realized.