3230 results about "Slip ring" patented technology

The invention relates to the technical field of semiconductor chemical mechanical polishing, in particular to a pressure-adjustable double-frequency ultrasonic-assisted semiconductor chemical mechanical polishing device which comprises a rotary table, and a tray, a lower vibration plate, an upper vibration plate, a magnetic sheet and a polishing pad are sequentially stacked and fixed to the upper surface of a table plate of the rotary table from bottom to top. A piezoelectric ceramic piece is fixed to the middle of the lower surface of the upper vibration plate, a retaining sleeve is eccentrically placed on the upper surface of the polishing pad, a threaded sleeve is in threaded connection with the upper end of the outer side face of the retaining sleeve, a damping spring is fixed to the outer top face of the threaded sleeve, a supporting piece is fixed to the upper end of the damping spring, and an inner ring of a second electric sliding ring is fixed to the upper surface of the supporting piece. A transmission shaft is fixedly assembled in an inner ring of the second electric slip ring, a clamping sleeve is fixed to the lower end of the transmission shaft, and an ultrasonic vibrator is fixedly assembled in the clamping sleeve. The method solves the problems that an existing semiconductor chemical mechanical polishing technology is low in polishing speed, poor in surface quality after polishing and low in polishing qualification rate, and is suitable for semiconductor chemical mechanical polishing.

The invention provides a method for testing the dynamic strain of the surface of a rotating body in an electromagnetic environment. The method comprises the following steps: constructing a bridge by using strain gauges and acquiring dynamic characteristic data of the rotating part under actual constraint conditions; performing simulation calculation according to the dynamic characteristic data, and determining the optimal pasting position of the strain gauge; pasting a strain gauge and formulating a wiring scheme of a strain gauge wire; the strain gauge is connected with a voltage signal amplifier, the amplified signal is connected with a data acquisition system through a conductive slip ring, and the amplified strain signal is recorded and processed; acquiring strain signals in real time and taking the strain signals as test data, and performing whole-course test in a full-rotating-speed range to complete dynamic strain test on the surface of the rotating body. The system has high sensitivity, the sensitivity and the measurement precision of the system are improved through full-bridge configuration, larger output signals are provided, the full bridge can achieve temperature compensation through symmetrical circuit design, and the system has good linear output characteristics and facilitates signal processing and analysis within the strain range.

The invention discloses a pipeline combined type single-autorotation intelligent counter-current chromatograph, and relates to the technical field of counter-current chromatographs, the pipeline combined type single-autorotation intelligent counter-current chromatograph comprises a rotating disc, a surrounding separation channel is formed in the rotating disc, a filling block is mounted in the surrounding separation channel, one end of the rotating disc is rotatably mounted through a liquid slip ring, and the other end of the rotating disc is rotatably mounted through a liquid slip ring. The other end of the rotating disc is connected with a main shaft, the main shaft is connected with a driving device, unwinding is conducted in a liquid slip ring mode, the rotating disc can complete unwinding action under single rotation, mixing of two phases in the separation channel can be enhanced through a filling block, and therefore arrangement of a planetary gear train can be abandoned; the main shaft is directly driven by the driving equipment to rotate, and the main shaft drives the rotating disc to rotate to realize two-phase separation and extraction, so that a higher rotating speed can be obtained, and the separation efficiency and effect are improved; and secondly, after the planetary gear train is abandoned, the equipment noise is greatly reduced, and good dynamic balance is achieved.

A retractable slip ring transmission mechanism is disclosed, including a housing, a connecting wire, a telescopic component, and a transmitting component. The connecting wire is wrapped around the telescopic component, and the telescopic component is rotatably provided in the housing. The telescopic component includes a first fixed part, an elastic part and a second fixed part. The second fixed part is provided with a holding compartment on one side for placing the elastic part, and the holding compartment is provided with an opening. One end of the elastic part is provided on the outside of the holding compartment, and the other end of the elastic part is coiled within the holding compartment through the opening. Through improvement of the transmitting component, the structure is optimized, which not only can reduce the production process and lower the production cost, but also can increase the power transmission of the product.

The utility model discloses an automatic charging cable take-up and pay-off device which comprises a charging gun, a motor mounting plate, a slip ring mounting plate, a cable guide piece, a gear motor, a spiral winding roll and a plurality of roller rotating shafts, and the motor mounting plate and the slip ring mounting plate are oppositely arranged at the two ends of the cable guide piece in parallel. A plurality of roller rotating shafts are oppositely arranged on the inner walls of the motor mounting plate and the slip ring mounting plate, the gear motor is mounted on the motor mounting bracket, the spiral winding roll is driven by the gear motor, a main body of a charging cable of the charging gun extends along the spiral groove, and the other end of the charging cable extends out of the spiral winding roll and is connected with the charging head. The device is compact in overall structure, small in occupied space, stable and safe, and the cables can be wound and unwound without manual intervention.

The invention discloses a high-precision water pump pressure controller which comprises a pump box, a centrifugal impeller and an adjusting ring set. A bearing frame is arranged on one side of the pump box, a vortex tube and a lining plate are arranged on the surface of the pump box, a rotating speed sensor and a flow speed sensor are arranged on the inner side of the bearing frame and the inner side of the vortex tube respectively, a pressure sensor is arranged on the lining plate, and the output end of the sensor is electrically connected to a data processing module. The centrifugal impeller comprises a wheel seat, a sliding ring, centrifugal blades and a synchronous gear ring, and the centrifugal blades are meshed with a worm gear rack of the synchronous gear ring through transmission tooth grooves. The adjusting ring set comprises a sliding rod, a joint ring and a hand rotating ring and is used for controlling the synchronous gear ring to rotate so as to drive the centrifugal blades to deflect to adjust the exposed area of the centrifugal blades, and therefore dynamic adjustment of pressure output is achieved. The system can realize real-time monitoring and fusion analysis of parameters such as rotating speed, flow velocity and pressure, has the advantages of fast response, high adjustment precision, strong system stability and the like, and is suitable for a precise fluid conveying system.

The utility model discloses a traction type honing machine based on wind power driving, two wind wheels are fixed at two ends of an oilstone mechanism, the two wind wheels are assembled with the movable ends of pneumatic-electric integrated slip rings, the static ends of the two pneumatic-electric integrated slip rings are respectively connected with two traction ropes, the two traction ropes are both connected with the linear free end of a linear execution mechanism, and the linear execution mechanism is connected with a motor. The linear execution mechanism drags the oilstone mechanism to axially move in a to-be-polished hole of a workpiece through the traction rope, air is blown to the wind wheel through the pneumatic-electric integrated sliding ring, the wind wheel is made to rotate, and then the oilstone mechanism is driven to rotate in the to-be-polished hole. According to the honing mechanism, a main shaft stretching into a workpiece and used for supporting the honing mechanism is omitted, the phenomenon that the main shaft swings downwards and shifts due to the fact that the main shaft is too long is avoided, axial movement of the oilstone is achieved in a traction mode of the traction rope, and the using effect is good. The oilstone is driven to rotate through wind power, the structure is simple, radial displacement of the oilstone is supplied through piezoelectric ceramic deformation, the structural design is ingenious and reasonable, redundancy is avoided, and operation is stable.

The invention discloses a system for lowering and recovering a hydraulic pipe of an underwater blowout preventer, which comprises a winch drum, a driving assembly and a bearing seat are respectively arranged on shafts at two ends of the winch drum, the driving assembly is used for driving the winch drum to rotate, and the bearing seat is used for supporting the winch drum; a replaceable chain wheel and a hydraulic slip ring are sequentially mounted on the projecting shaft on the other side of the bearing seat, and the replaceable chain wheel is connected with a cable arrangement device through a chain; a hydraulic pipe of the underwater blowout preventer is led into the winch roller through the hydraulic sliding ring, then led to the cable arrangement device through the winch roller and finally led to the underwater blowout preventer through the cable arrangement device, and the cable arrangement device is used for enabling the hydraulic pipe to be arranged in order along the winch roller. The driving assembly is connected with a pneumatic control system which is used for controlling the driving assembly to drive the winch drum. According to the system, hydraulic pipes with different diameters can be automatically collected and released, the heat dissipation effect is good in the collecting and releasing process, and serious heating of the hydraulic pipes cannot be caused.

The invention discloses a face gear planetary transmission system dynamic uniform load test platform and test method, and belongs to the field of gear transmission, and the test platform comprises a rack, a drive motor, a step-up gear box, a face gear planetary transmission system, a magnetic powder brake, a torque sensor, a slip ring, a stress strain test system and the like. The face gear planetary transmission system comprises an input face gear, a planet wheel, a planet carrier, a fixed face gear and the like. According to the dynamic uniform load test, stress values at the tooth root of the face gear and the tooth root of the planetary gear are measured mainly through strain gauges, and the corresponding relation between the tooth root stress and the meshing force at the gear meshing point is obtained through finite element simulation. And calculating the dynamic uniform load coefficient according to the dynamic meshing force root-mean-square values and the average values obtained at the tooth roots of the face gear and the planetary gear. By testing and analyzing the dynamic uniform load coefficient, the load distribution characteristic of the face gear planetary transmission system can be accurately revealed, a scientific basis is provided for structural parameter optimization, meshing performance improvement and reliability design of the face gear planetary transmission system, and then accurate and high-performance design of the transmission system is achieved.

The invention discloses a pipeline-assembled single-rotation intelligent countercurrent chromatograph, which relates to the technical field of countercurrent chromatographs, and comprises a rotating disk, wherein a surrounding separation channel is provided in the rotating disk, wherein a filling block is installed in the surrounding separation channel, wherein one end of the rotating disk is rotatably installed through a liquid slip ring, and the other end of the rotating disk is connected to a main shaft, wherein the main shaft is connected to a driving device, and unwinding is performed by means of a liquid slip ring, so that the rotating disk can complete the unwinding action under single rotation and can rely on the filling block to strengthen the mixing of two phases in the separation channel, thereby abandoning the setting of a planetary gear system, and the main shaft directly drives the main shaft to rotate through the driving device, and the main shaft drives the rotating disk to rotate to realize two-phase separation and extraction, thereby being able to obtain a higher rotation speed and improving the efficiency and effect of separation; secondly, after abandoning the planetary gear system, the equipment noise is greatly reduced, and the device has good dynamic balance.

The utility model provides an injection mold. The injection mold comprises a lower mold base and an upper mold base arranged above the lower mold base, a left sliding block and a right sliding block are arranged between the upper die base and the lower die base, concave cavity faces are arranged on the opposite side faces of the left sliding block and the right sliding block, positioning protrusions are arranged on the cavity faces at intervals in the vertical direction, and a cylindrical cavity is formed between the two opposite cavity faces after the left sliding block and the right sliding block are oppositely combined. A concave cavity with a downward opening is formed in the lower portion of the upper die base, an inserting column arranged in the vertical direction is fixed in the concave cavity, when the upper die base and the lower die base are oppositely combined, the inserting column is inserted into the center of the interior of the cylindrical cavity, at the moment, the left sliding block and the right sliding block are located in the concave cavity, and a sliding groove formed in the left-right direction is formed in the position, below the cylindrical cavity, of the lower die base. And the outer port of the chute extends to the side wall of the lower die holder. The structure of the injection mold is designed, and the injection mold can adapt to the center shaft of the through hole conductive slip ring subjected to integral injection molding processing, so that the production efficiency can be effectively improved, the production quality is ensured, and the injection mold has good practicability.

A lockable differential assembly includes a lock plate that is rotatable about a rotational axis. The differential assembly also includes actuator assembly having a stator and an armature, the actuator assembly being switchable between energized and de-energized states. A radial alignment of the stator is provided based on a piloting feature provided at an outer diameter of the stator housing. A slip ring assembly configured to axially translate based on the locked state or the unlocked state of the differential assembly is provided, including a slip ring that interfaces with the armature at a slip surface, and one or more pins rotationally coupling the slip ring to the lock plate. The slip ring assembly is configured to transmit an axial locking force and an axial return force between the actuator assembly and the lock plate.

The invention discloses an indoor research and development test platform for a multi-rotor unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicle testing, the indoor research and development test platform comprises a test bench, a main control unit is arranged on the test bench, the main control unit is provided with a flight path resolving algorithm, and the test bench comprises a rectangular cubic frame. An annular outer ring is arranged in the rectangular cubic frame in a connected mode through a three-degree-of-freedom rotating shaft connecting piece and a frame body connecting plate, and an annular middle ring is arranged in the annular outer ring in a connected mode through a three-degree-of-freedom rotating shaft connecting piece and a ring connecting piece. The interior of the annular middle ring is connected with an annular inner ring and an annular outer ring which serve as unmanned aerial vehicle connecting plates through three-degree-of-freedom rotating shaft connecting pieces and fixing grooves, magnetic encoders are arranged on the middle ring and the inner ring, and meanwhile the cubic frame and the outer ring, the outer ring and the middle ring and the middle ring and the inner ring are connected through conductive sliding rings; according to the invention, an indoor unmanned aerial vehicle testing environment which is safe, reliable, accurate in data, simple to operate, friendly in interface, visual and efficient can be provided for users.

The invention relates to a satellite rotating cabin radio frequency signal transmission system and method based on a photoelectric slip ring, and the system comprises a baseline conversion module which is located in a satellite rotating cabin and is used for converting a radio frequency signal into an optical signal or converting the optical signal into the radio frequency signal; the photoelectric slip ring is located in the rotary table, the photoelectric slip ring comprises a smooth slip ring and an electric slip ring, the photoelectric slip ring is driven by the rotary table to rotate, and the photoelectric slip ring is used for non-contact transmission of optical signals or radio frequency signals; and the platform conversion module is located in the satellite platform cabin, and the platform conversion module is used for converting the radio frequency signal into an optical signal or converting the optical signal into the radio frequency signal. According to the satellite rotating cabin radio frequency signal transmission system based on the photoelectric slip ring provided by the invention, the photoelectric slip ring is used for realizing single-channel or multi-channel transmission of multiple radio frequency signals, and light weight and miniaturization of complex signal transmission of a satellite-borne system are facilitated.

The invention provides a wind generating set, a differential speed regulation device and a control method thereof, the wind generating set comprises the differential speed regulation device, a multi-port converter and an electro-magnetic synchronous generator, and the differential speed regulation device comprises a permanent magnet motor, a differential planetary gear train, a quasi planetary gear train and a speed regulation motor. A permanent magnet motor rotor is connected with a differential planetary gear train planet carrier, and a speed regulating motor rotor is connected with a quasi planetary gear train sun gear. The differential planetary gear train sun gear drives the electro-magnetic synchronous generator rotor to operate at a first preset rotating speed. One port of the multi-port converter is connected with the permanent magnet motor stator, one port is connected with the speed regulation motor stator, and the other port is connected with the electro-magnetic synchronous generator rotor through the slip ring. According to the differential speed regulation device, variable-speed input, self-energized speed regulation and constant-speed output are achieved, and the differential speed regulation device is compact in overall structure, small in size and light in weight; the black start can be realized without taking power from a power grid; and the electro-magnetic synchronous generator is directly connected to the grid, so that the power grid supporting capacity is high.

The invention discloses a mining small-sized anti-vibration trepanning directional measurement device and method. The mining small-sized anti-vibration trepanning directional measurement device comprises a battery module, a measurement module, a vibration reduction module, a display module, a power switch and a charging interface, the measurement module comprises an MEMS gyroscope, an MEMS accelerometer, a conductive slip ring, a servo mechanism, an IMU module, a main control board, a motor control board and an external interface connector. Based on the high-precision small-size MEMS gyroscope, the MEMS accelerometer and the integrated small IMU, the equipment size is reduced, the cost is reduced, and the power consumption of the whole machine is reduced; through a four-position north-seeking method, the measurement time is shortened, and high-precision autonomous orientation is realized; based on an integrated small IMU, the tapping direction is updated in real time through quaternion calculation, and dynamic tracking measurement is achieved in the drilling machine adjusting process; according to the vibration reduction module and the vibration reduction method, the vibration resistance problem of an MEMS device is solved, the data quality of an MEMS gyroscope and an MEMS accelerometer is improved, vibration reduction filtering in the tracking process is achieved, and the equipment orientation precision is improved.

The invention discloses a self-adaptive cutter system for brake disc machining. The self-adaptive cutter system comprises a cutter handle, a cutter disc, a cutting blade, a suspension sleeve, an electromagnet and a control system. The permanent magnet is embedded in the circular truncated cone section of the cutter handle, the suspension sleeve is circumferentially fixed to the cutter head through the flat key, the flat key is pasted with the strain gauge to detect cutting force in real time, and the electromagnet and the permanent magnet are oppositely arranged in the radial direction to form magnetic suspension supporting. And the control system adjusts the current of the electromagnet according to the strain signal, dynamically adjusts the radial rigidity and the suspension position of the cutterhead, and realizes axial-radial decoupling support in combination with the thrust bearing. In a preferable embodiment, the cutting blade realizes micron-order cutting depth adjustment through a piezoelectric ceramic driving gasket, the service life of the cutter is prolonged due to the alternative opening design of a cutter head mounting boss, and the problem of winding of a rotating lead is solved by a conductive slip ring assembly. Working conditions such as sand holes and hardness sudden change can be responded in real time, broadband vibration is restrained, the machining precision is improved, the service life of the cutter is prolonged, and the method is suitable for high-precision brake disc machining.

The invention relates to a bending moment-torque composite loading device for testing the load capacity of a steering engine, and belongs to the technical field of ammunition weapon system testing. In the device, the pressure head, the pressurizing rod and the composite loading slip ring synchronously rotate along with the rotation of the rudder wing, so that the applied pressure can be ensured to be always perpendicular to the rudder surface and is closer to the real wind resistance working condition during flight. The bending moment output device and the torque output device are coupled together through the composite loading slip ring, so that the bending moment and the torque can be loaded at the same time and are closer to the actual flight condition.

The invention discloses an anti-interference system for a slip ring communication technology, and belongs to the technical field of communication. Aiming at the problems of electromagnetic interference, mechanical vibration and unstable contact of monocrystalline silicon furnace equipment, a collaborative solution is provided. The system comprises a conductive slip ring assembly, a dynamic shielding module, an asymmetric differential transmission module, an intelligent filtering module, an environment sensing module and a contact impedance compensation module, and real-time cooperative control is realized through a bus controller. The dynamic shielding module adopts a liquid metal micro-channel layer and a piezoelectric driving layer, the shielding density is dynamically reconstructed according to the electromagnetic interference frequency band and the vibration intensity, and broadband noise is suppressed; the asymmetric differential transmission eliminates common-mode interference through dynamic phase compensation; the intelligent filtering module adaptively adjusts parameters of a band elimination filter based on a deep learning model, and accurately suppresses time-varying interference; the carbon nanotube composite electric brush stabilizes contact impedance through a pressure feedback mechanism. The system is obviously superior to a traditional static shielding and fixed filtering scheme, and reliable communication requirements are guaranteed.

The invention relates to a 3D printing device with a dispensing needle head capable of rotating by 360 degrees without limitation and a printing head, and solves the technical problems that in the printing process of existing equipment for carrying out multi-material 3D printing on fibers and glue solutions, electric wires and air pipes are likely to be twisted or wound, and rotation by 360 degrees or above cannot be achieved. The 3D printer comprises an X-axis direction linear module, a Y-axis direction linear module, a Z-axis direction linear module, a platform and a printing head, the printing head comprises a vertical supporting plate, a fixing plate, a wire feeding device connecting plate, a rotating cylinder connecting plate, a pneumoelectric slip ring support, a rotating arm, a wire feeding device, a rotating arm rotation driving motor, a pneumoelectric slip ring, a pipeline, a pipeline fixing plate, an outer cylinder, a connecting sleeve, an upper bearing, a lower bearing, a driving gear, a driven gear, a fiber output needle and a dispensing needle connecting arm rotation driving motor. The device comprises a small synchronous pulley, a synchronous belt, a large synchronous pulley, a dispensing needle connecting arm, a dispensing needle, a rotary hollow shaft, a glue tube and a glue injection cylinder. The method is widely applied to the technical field of multi-material 3D printing.

The utility model discloses a ring-shaped inductor component convenient to adjust inductance value, which comprises a ring-shaped inductor, an insulating base, a metal slip ring and a movable metal rod, the ring-shaped inductor comprises a magnetic core and an enameled coil, the ring-shaped inductor and the metal slip ring are respectively arranged on the insulating base, the T-shaped end of the movable metal rod is arranged between the metal slip ring and the ring-shaped inductor, and the movable metal rod is arranged on the insulating base. The two sides of the T-shaped end are in contact with the inner wall of the metal slip ring and the corresponding enameled coil on the annular inductor respectively and can slide in the circumferential direction. According to the utility model, by utilizing the structure that the movable metal rod is in conductive contact with one turn of enameled coil of the annular inductor and is led out through the metal slip ring, the purpose of changing the effective turn number of the enameled coil, namely changing the inductance value, is realized, and the function of adjusting the inductance value can be easily realized on the premise of not disassembling any part of the inductor assembly; operation is easy and convenient, the application cost is reduced, the adjustment number of inductance values is large, and the requirement for adjustment of a large number of inductance values can be met.

The invention belongs to the technical field of transformer heat dissipation, and particularly relates to a power transformer heat dissipation device with an alarm function, which comprises a protection assembly, an adjusting device is mounted in an inner cavity on one side of the protection assembly, a heat dissipation assembly is mounted on the adjusting device, and the adjusting device can drive the heat dissipation assembly to slide up and down in the height direction of the protection assembly. The heat dissipation assembly can slide up and down in the shell through cooperation of a linear motor sliding rail and a linear sliding block, a corrugated pipe is arranged on the heat dissipation assembly in a communicating mode, and the exhaust end of the corrugated pipe is movably arranged in a hole formed in the intersection position of sliding holes formed in the longitudinal swing plate and the transverse swing plate in a penetrating mode. The multiple sections of meshing teeth arranged on the vertical plate are matched with the gear to drive the exhaust end of the corrugated pipe to swing up and down, meanwhile, the sliding ring arranged on the insulation guide rod in a sleeving mode is matched with the linkage rod to drive the exhaust end of the corrugated pipe to swing left and right, cold air is evenly dispersed to all positions of the shell, and it is ensured that electric appliance elements in the shell are evenly cooled.

The invention discloses a high-precision eccentricity-adjustable hole milling device and a using method thereof. The device comprises a cutter 1, an output shaft, a main shaft 2, an inner sleeve 3, an outer sleeve 8, a sleeve shell 7 and three transmission mechanisms. According to the device, three independent transmission systems are used for achieving rotation, revolution and feeding motion of a cutter, and the eccentric position of the cutter is accurately controlled by combining the piezoelectric micro-displacement technology. The first motor drives the outer sleeve to rotate around the axis of the outer sleeve, the second motor drives the spindle to rotate at a high speed for cutting, and the third motor controls the lead screw to complete axial movement of the tool. And the built-in conductive slip ring ensures stable power supply of the rotating part. The design is particularly suitable for precision machining tasks needing to flexibly and accurately control the cutting path, and excellent operation flexibility and machining precision are provided.

The invention provides a magnetic energy circulation type lotus rotary opening device which comprises a base, a rotary disc, a vertical shaft, a plurality of lotus petals, a direct-current motor and a control circuit. The direct-current motor is arranged in the base, the output end of the direct-current motor is connected with the vertical shaft, and the upper portion of the vertical shaft is fixedly connected with the rotary disc. The control circuit comprises a phase-change switch K2, a speed regulator TS, a battery E0 and a carbon brush, the input end of the speed regulator TS is connected with the battery E0, the output end of the speed regulator TS is connected with a direct current motor through the phase-change switch K2, the output end of the direct current motor is connected with the carbon brush, and the electric push rod is connected with the wiring ends S1 and S2 of the carbon brush through a slip ring. The direct-current motor is adopted to drive the vertical shaft, so that the lotus petals rotate at a low speed, the push rod is linked with the pull rod to slowly open and close the lotus petals, a fixed shape is changed into a movable shape, and the ornamental value and interestingness are increased.

The invention discloses a yaw collecting ring temperature intelligent control system, method and device, a medium and a product, and relates to the field of wind power generation, and the method comprises a temperature collection unit which is used for collecting temperature information of the surface of a collecting ring in real time; the temperature characteristic analysis unit is used for processing the temperature information to obtain a multi-dimensional temperature characteristic value; the data management unit is used for collecting multi-dimensional temperature characteristic values to construct a historical database; the temperature prediction and abnormality diagnosis unit is used for obtaining a temperature prediction result and an abnormality judgment result based on historical data in the historical database and the real-time multi-dimensional temperature characteristic value; the temperature control unit is used for adjusting the working temperature of the collecting ring on the basis of the real-time temperature information when the temperature prediction result exceeds a preset safety threshold value or the abnormity judgment result shows an abnormal condition; according to the method and the device, the crossing from passive control to active prediction can be realized, so that the problem that predictive maintenance is difficult to realize in the traditional technology is effectively solved.

The invention discloses an extra-strong frost heaving area cast-in-situ bored pile protection structure and a construction method.The extra-strong frost heaving area cast-in-situ bored pile protection structure comprises a forming cylinder body, a displacement cylinder body arranged on the outer side of the forming cylinder body in a sliding and sleeving mode and a fixed cylinder body arranged on the outer side of the forming cylinder body in a sleeving mode, and the fixed cylinder body is located above the displacement cylinder body; the fixed cylinder body is fixed below the seasonal frozen soil through a fixing assembly, and a clamping assembly is arranged between the forming cylinder body and the displacement cylinder body, so that when the forming cylinder body moves upwards to a preset position, the forming cylinder body and the displacement cylinder body are fixed together through the clamping assembly to limit the ascending displacement of the forming cylinder body; a slip ring is arranged at the top of the displacement barrel, a fixing ring with a conical structure is fixed to the bottom of the outer side of the fixing barrel, and the inner circumferential inclined face of the slip ring is in sliding fit with the outer circumferential inclined face of the fixing ring. By means of the displacement of frost heaving and thaw collapse of the formed cylinder, returning of the formed cylinder and application of acting force of anti-frost heaving displacement are achieved, and the generation of the frost heaving amount is reduced.

The utility model relates to the field of wind power generation, aims to solve the problems that in the prior art, an anti-rotation test cannot be carried out on a slip ring, an anti-vibration test cannot be carried out on the slip ring, and various types of slip rings cannot be tested at the same time, and provides a vibration test bench tool for a variable pitch system slip ring test, which comprises a base, a shell is arranged on the top face of the base, the end, close to the base, of the shell is connected with the base, a servo motor is arranged in the shell, the end, close to the base, of the servo motor is detachably connected to the base, an output shaft of the servo motor is perpendicular to the top of the shell, a rotating mechanism is arranged at the top end of the shell, and the output shaft of the servo motor is fixedly connected to the rotating mechanism. A stop rod is arranged on one side of the rotating mechanism, and the end, close to the top face of the shell, of the stop rod is perpendicularly and fixedly connected to the top face of the shell. The slip ring testing device has the advantages of being simple in structure, convenient to disassemble and assemble, and capable of simultaneously or respectively testing the rotation working condition and the vibration working condition of the slip ring and testing various types of slip rings.

The invention relates to a slip ring seal assembly, which is configured for sealing isolation on a rotating component (22), comprising: a slip ring seal (2) having a rotating slip ring (3) with a sliding surface (3a) and a stationary slip ring (4) with a sliding surface (4a), the rotating slip ring and the stationary slip ring defining a sealing gap (5) between the sliding surfaces (3a, 4a), wherein the rotating slip ring (3) and the stationary slip ring (4) are made of an electrically conductive material, and wherein the rotating slip ring (3) is electrically connected to the rotating member (22); and a monitoring device (6) having an electrical circuit (7), a measuring unit (60) and an evaluation unit (61), the electrical circuit (7) comprising a first cable (71) electrically connecting the stationary slip ring (4) to the voltage source (70), a second cable (72) electrically connecting the rotating component (22) to the voltage source (70), and a capacitor (73), the capacitor (73) being configured as a plate capacitor, the plate capacitor being formed by the rotating slip ring (3) and the stationary slip ring (4), the measuring unit (60) being configured to measure the rotating component (22), and the evaluation unit (61) being configured to evaluate the rotating component (22). Wherein the measuring unit (60) is designed to detect a change in an electrical parameter of the circuit (7), and wherein the evaluation unit (61) is designed to evaluate the electrical parameter detected by the measuring unit (60).

The invention relates to the technical field of electric digital data processing, in particular to a single point mooring system liquid slip ring spring energy storage sealing ring optimization design method which comprises the following steps: establishing a two-dimensional axial symmetry model of a liquid slip ring spring energy storage sealing ring; the peak contact stress, the linear contact stress and the maximum shear stress of the liquid slip ring spring energy storage sealing ring under the actual working condition are obtained; establishing a sealing performance evaluation system of the liquid slip ring spring energy storage sealing ring; screening out key structure parameters to form a data set; constructing a back-propagation neural network model, training the weight and bias of the back-propagation neural network model, evaluating the trained back-propagation neural network model, and finally obtaining an optimal parameter combination and a finite element model based on the optimal parameter combination. According to the method, the optimal parameter combination meeting the sealing performance requirement can be determined, so that the overall sealing effect is improved, and the sealing reliability is improved.

The invention relates to a direct-current electric field sensing system with a rotating structure, which realizes accurate measurement of a direct-current electric field. The system comprises a laser, a rotating structure and a detector, the rotating structure comprises a single-mode fiber slip ring, a collimating mirror, a polarizing film, a 1 / 4 wave plate, a crystal and a multimode fiber slip ring. Experimental results show that the scheme has the advantages of high response speed and strong anti-electromagnetic interference capability, and the aims of inhibiting light beam offset, realizing light beam collimation and achieving high-precision measurement can be fulfilled by utilizing the rotating structure and the optical fiber slip ring.