1735 results about "Slip ring" patented technology

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 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 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 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.

A slip ring, a sealing assembly, a stator, an electric motor, an electric assembly, and a vehicle. The slip ring is provided with a first cavity and a second cavity which are axially disposed spaced apart from each other; and the slip ring comprises a partition plate for separating the first cavity and the second cavity, wherein a first communication port that connects the first cavity and the second cavity is formed in the partition plate and used for guiding a cooling liquid in the second cavity into the first cavity, and the first cavity is used for accommodating windings of an electric motor.

A slip ring arrangement according to the invention for an electric machine comprises a first slip ring having a radial inner surface and a radial outer surface, a first contact pin forming an electrically conductive sliding contact with the first slip ring, a first conductor extending axially from the first slip ring and electrically connected to the first slip ring, and a substantially hollow cylindrical first support element having a radial inner surface and a radial outer surface. The first slip ring is arranged with its radial outer surface against the radial inner surface of the first support element. The first conductor is enclosed between the radial inner surface and the radial outer surface of the first support element.The first contact pin is guided radially displaceably within a second support element and is subjected to, or can be subjected to, force in a first radial direction. The second support element is arranged in a volume defined radially by the radial inner surface of the first slip ring, and the second support element is rotatably arranged relative to the first support element. Furthermore, the first contact pin can be subjected to force by a fluid on the side radially opposite the sliding contact. The invention further comprises a rotor of a separately excited synchronous machine.

The invention discloses an azimuth gamma testing device and application, and belongs to the technical field of oil and gas logging equipment, the testing device comprises a PC, a rotating table, a rotating table motor, a motor driver, a rotating speed operator, a conductive slip ring and a stabilized voltage supply, the rotating table is sleeved with a rotating disc, and the rotating disc is fixedly connected with a laser; a dial is fixedly connected to the outer circumference of the rotating disc, one end of the rotating table is connected with the rotating table motor, the other end of the rotating table is connected with the conductive slip ring, the conductive slip ring is electrically connected with the azimuth gamma instrument to be measured, the azimuth gamma instrument to be measured is electrically connected with the stabilized voltage supply and the PC, and the rotating speed operator is electrically connected with the motor driver. The motor driver is connected with the rotary table motor, a photoelectric sensor is fixedly connected to the rotary table, and the photoelectric sensor is electrically connected with the azimuth gamma instrument to be detected. According to the invention, double evaluation of the azimuth measurement precision and the pulse counting time correctness of the azimuth gamma instrument can be accurately checked.

The utility model discloses a central lifting rod anti-falling device of a wheel stacking excircle lifting appliance. The central lifting rod anti-falling device comprises a lifting ring, an anti-unhooking door frame, a lifting rod seat, a retractable lifting hook, a central lifting rod and a lifting hook, the upper ends of the lifting ring and the retractable lifting hook are movably arranged at the upper and lower ends of the suspender seat respectively; the suspender seat is vertically provided with a through hole and sleeves the outer side of the central suspender; the upper end of the central suspender is provided with an external thread, and the lower part of the rod body is sequentially sleeved with a conical sleeve, a slip ring and a transverse framework, and the lower end is provided with a cylinder through a bottom nut; the lower end of the retractable hook is movably connected with the bottom of the conical sleeve; the top of the mousing-hook door frame is fixedly welded to the top end of the center hanging rod, and the two sides of the mousing-hook door frame are fixedly welded to the fixing nuts respectively. The transverse framework is in a trifurcate shape, three outer ends of the transverse framework are movably connected with lifting hooks respectively, and the bottom end of each lifting hook is movably connected with a clamping plate respectively; and pull rods are movably arranged between the outer side of the cylinder and the three lifting hooks respectively. According to the utility model, the problem that the center lifting rod of the existing large wheel stacking excircle lifting appliance falls off can be effectively solved.

The application discloses a punching device for motorcycle exhaust muffler pipes and particularly relates to the technical field of punching devices, which comprises a supporting frame, a clamping and punching assembly arranged on the supporting frame, the clamping and punching assembly comprising a central cylinder arranged in the supporting frame, one end of the central cylinder being provided with an adjusting circular truncated cone cylinder, and a plurality of clamping blocks being arranged on the middle part of the adjusting circular truncated cone cylinder. The clamping blocks can be synchronously contracted or expanded along the radial direction, and the arc-shaped fitting grooves on the clamping blocks and the rubber pads can stably clamp the motorcycle exhaust muffler pipes with a certain range of outer diameter differences. The punching device can solve the problem that the traditional punching device can only be adapted to single-specification pipes and the time-consuming replacement of molds, greatly improve the universality of the equipment, simultaneously punch different positions of the same section of the muffler pipe, and automatically feed the slip ring through the motor-driven screw rod, so that the clamping, angle adjustment, punching and resetting linkage operation can be completed, manual intervention is reduced, and the operation strength is reduced.

The invention relates to the technical field of visual inspection, and discloses a vision-based semi-closed sheet metal part inner wall appearance detection device. The device comprises a detection conveying table, a rack and a visual detection assembly, the visual detection assembly comprises a rotating mechanism and a reciprocating mechanism. The rotating mechanism drives a gear ring through a servo motor and drives a front shell provided with a visual camera to rotate, and comprehensive scanning of the inner wall in the circumferential direction is achieved. Meanwhile, the reciprocating mechanism utilizes worm and worm gear transmission and a swing arm connecting rod structure to convert motion into reciprocating swing of the visual camera, all-directional detection is covered, and the problems of detection dead angles and low efficiency existing in a traditional method are effectively solved; the device is further provided with a wiring channel penetrating through the worm and a conductive slip ring, continuous and stable power and signal transmission in the dynamic detection process is ensured, the device is compact in structure and high in automation degree, and detection comprehensiveness, accuracy and efficiency are remarkably improved.

The utility model discloses a petroleum transmission pipeline, and mainly relates to the technical field of transmission pipelines. Comprising two pipeline bodies and a butt joint structure, the section of each pipeline body is round, the butt joint structure is located at the ends, close to each other, of the two pipeline bodies, the butt joint structure comprises a connecting cylinder, the two ends of the connecting cylinder are attached to the ends, close to each other, of the two pipeline bodies correspondingly, and two sliding rings are slidably connected to the outer wall of the connecting cylinder; the sides, away from each other, of the two sliding rings are fixedly connected with top plates, the sections of the top plates are in a right trapezoid shape, the outer wall of the connecting cylinder is fixedly connected with a positioning rod, the section of the positioning rod is in a Z shape, and the arc face of the positioning rod is slidably connected with a positioning plate. The petroleum transmission pipeline butt joint device has the advantages that a worker can conveniently conduct butt joint or separation on petroleum transmission pipelines, the petroleum transmission pipelines can be adjusted to the proper length according to actual needs, and therefore the application range of the petroleum transmission pipelines is widened.

The utility model provides a dual-redundancy aircraft propeller wireless variable pitch system. The system comprises a driving integrated control board, a power supply distribution assembly box, a Lora communication system, a wireless data transmission radio station, a wireless power supply system, a transmitting double antenna, a receiving double antenna, a variable pitch motor and a propeller mechanical mechanism. Wherein the wireless power supply system comprises a transmitting coil group and a receiving coil group; the transmitting dual-antenna comprises an antenna I and an antenna II, and the receiving dual-antenna comprises an antenna III and an antenna IV; according to the system design provided by the utility model, an electric slip ring used in wired pitch change is replaced by a wireless pitch change mode, and wireless electric energy supply and wireless signal control of the pitch change motor are realized. And meanwhile, a dual-redundancy design of a Lora communication system and a wireless data transmission radio station is adopted to carry out wireless communication so as to control the variable-pitch motor.

A method is proposed for determining a zero-force reference position of a wet-running brush actuator (2) for external excitation of a rotor of an electric motor (EM) arranged on a rotor shaft (RW). While an electric vehicle with an electric motor (EM) is stationary and the rotor is externally excited, a spindle (10) of the brush holder (2), which has an electric stepper motor (4) with an integrated spindle drive, is moved away from the grinding brushes (B1, B2) until the contact between the grinding brushes (B1, B2) and the associated slip rings (SR1, SR2) reaches a contact quality limit, the position assumed by the spindle (10) being defined as the zero-force reference position, from which the steps of the stepper motor (4) are counted in order to variably press the grinding brushes (B1, B2) against the slip ring (SR1, SR2) as required. In addition, a computer program, a computer program product, a system, and an electric vehicle are proposed.

The application discloses a high-frequency welded pipe laser cutting device and method, and belongs to the field of high-frequency welded pipe processing. The device comprises a supporting part, a hollow air-electric slip ring connected to the inside of the supporting part, and a cutting assembly connected to one side of the hollow air-electric slip ring. The cutting assembly comprises an axial displacement part fixed to one side of the hollow air-electric slip ring. The lens is isolated from the airflow inside the nozzle by high-transparency glass, so that zinc vapor and oxide particles are prevented from adhering to the lens. A wind ring is arranged inside the nozzle. The air outlet of the wind ring faces the exhaust port of the nozzle. The air outlet and the wind focusing cover are designed in a wind focusing mode. The auxiliary gas entering the wind ring is discharged from the air outlet and guided through the wind focusing cover. The auxiliary gas guided through the wind focusing cover converges downward in the nozzle to form a dynamic air curtain, which blocks the zinc vapor backflow path from the lower cutting area, effectively preventing zinc vapor and oxide particles from adhering to the high-transparency glass.

A slip ring arrangement according to the invention for an electric machine comprises a first slip ring module, comprising a first slip ring for electrical contact, a first conductor extending axially from the slip ring and electrically connected to the first slip ring, and a substantially hollow cylindrical first support element. The first slip ring is arranged on the support element in a first axial section on a radial outer surface. In a second axial section, the first conductor is enclosed by the first support element between a radial inner surface and a radial outer surface. Furthermore, a circumferential first web is arranged on the outer surface between the first axial section and the second axial section. The invention further comprises a rotor of a separately excited synchronous machine.

The utility model is applicable to the technical field of slip rings, and provides a high-precision slip ring applicable to ultra-long service life, which comprises a rotor part and a stator part, and is characterized in that the rotor part comprises a main shaft and a bearing fixed on the side wall of the main shaft; the stator part comprises a protective cover and a shell fixed on the protective cover; the side wall of the bearing is fixed on the shell; a first air circulation pipeline is arranged in the main shaft, an air inlet hole is formed in the main shaft, and the air inlet hole is communicated with one end of the first air circulation pipeline. A pipeline of the fan is connected with an air inlet hole of the main shaft, first air circulation pipelines are evenly distributed on the main shaft below the conducting ring, cold air flows to the first air circulation pipelines through the air inlet hole, the conducting ring, the gold-plated row brush and the bearing are cooled firstly, and then the cold air passes through a second air circulation pipeline connected with the shell to cool the conducting ring and the gold-plated row brush. Cold air enters the stator to cool the brush carrier, and finally the air is exhausted from the two sides of the stator side protection cover, so that a circulating cooling system is formed.

The invention belongs to the field of vehicle reliability detection, and particularly relates to a real-time acquisition device and method for the axial force of a wheel connecting bolt. Comprising a wheel adapter plate, a data transmission slip ring, a large electric connector, a small electric connector, a flexible supporting assembly, a data acquisition unit and an axial force measuring bolt. A working strain gauge is embedded in an axial stress concentration area of the axial force measuring bolt, a temperature compensation strain gauge is pasted on a bolt head to form a half-bridge measuring circuit, and a strain signal rotating along with a wheel is transmitted to a fixed end data acquisition unit through a signal lead via a small electric connector and a data transmission slip ring. The acquisition unit can calculate real-time axial force according to a pre-stored calibration coefficient and output the real-time axial force to a vehicle-mounted terminal or a remote server in a wireless or wired mode. According to the method, the whole-course waveform data of the axial force of the wheel connecting bolt can be continuously obtained under any vehicle speed, load and temperature conditions, changes caused by dynamic impact and heat effect are accurately captured, and the precision and traceability of wheel train connection fatigue life prediction and safety evaluation are improved.

The present invention provides a sealing unit for a hydraulic slip ring, which relates to the technical field of conductive slip rings and includes a rotor and a stator assembly. The stator assembly is used to enhance the sealing performance of the hydraulic slip ring. The lower protective shell is installed on the rotor, the upper protective shell is connected to the lower protective shell through the connecting piece, the inner ring protrusion is fixedly connected to the rotor, the inner ring protrusion is embedded in the groove of the lower protective shell, the outer periphery of the inner ring protrusion is plug-connected to the internal groove of the upper protective shell, the inner ring protrusion is provided on the rotor, and grooves matching the inner ring protrusion are machined in the lower protective shell and the upper protective shell, and the grease applied between the grooves reduces the wear of the stator assembly and the rotor, thereby increasing the service life of the unit. In addition, the O-ring made of rubber has strong plasticity and can achieve sealing of hydraulic slip rings in different working states.

The invention discloses an internal detection robot cable take-up and pay-off device which comprises a bearing frame, a reel is rotationally installed on the bearing frame, shaft barrels are fixedly arranged at the two ends of the reel respectively, the two shaft barrels are rotationally installed on the bearing frame, one of the two shaft barrels is connected with the rotating end of an optical fiber sliding ring in an inserted mode, and the other end of the optical fiber sliding ring is connected with a cable. The fixed end of the optical fiber slip ring is fixedly arranged on the bearing frame, a pulley is arranged on the bearing frame above the reel along the axial direction of the reel in a sliding manner, and a first driving structure for driving the reel to rotate and a second driving structure for driving the pulley to slide on the bearing frame are arranged on the bearing frame. According to the cable winding and unwinding device for the internal detection robot, an active winding and unwinding structure is adopted, cables are wound and unwound in a vertical wire inlet and outlet mode, in the winding and unwinding process, the cables can be wound on a reel or unwound from the reel in sequence at a constant speed, and the working efficiency of the robot is improved.

The invention provides a non-linear pipe fitting wrapping system and method, and relates to the technical field of insulated tubular busbars, the wrapping system comprises a wrapping head, the wrapping head comprises a mounting plate, a winding mechanism and a tension control mechanism, and the side wall of the mounting plate is provided with a through hole for a pipe fitting to pass through; an annular disc of the winding mechanism is coaxial with the through hole, a tape reel is arranged on the annular disc, and a driving assembly drives the annular disc to rotate; the tension control mechanism comprises a conductive slip ring, a rotating source, a guide roller, a tension sensor and a control unit. The conductive slip ring realizes electric signal transmission between the rotating part and the fixed part, and the tension sensor monitors the tension of the wrapping tape. The control unit receives tension signals in real time, when the tension is too high, the rotating source and the annular disc are controlled to rotate in opposite directions to loosen the wrapping tape, and when the tension is too low, the wrapping tape rotates in the same direction to be tensioned. The system automatically adapts to the bending change of the pipe fitting through intelligent tension control, adjusts the tension in real time, ensures that a wrapping layer is uniform and compact, and remarkably improves the wrapping quality and efficiency.

The utility model is applicable to the technical field of slip rings, and provides a slip ring applicable to a medical dual-mode imaging system, which comprises a rotor part and a stator part, and is characterized in that the stator part comprises an elastic sheet, a protective cover, a support, brush wires, an optical fiber baffle and a shell flange; the shell flange is fixed on the side wall of the protective cover, the support is fixed in the protective cover, the elastic piece is fixed on the support through a special jig, and the elastic piece is in a splayed shape. A row of brush wires are spot-welded at the tail end of the elastic sheet to serve as contacts for increasing the contact area between the conductive ring and the brush wires; the rotor part comprises a rotating shaft, a conducting ring, an insulating layer, an optical fiber assembly, a synchronizing wheel and an FC conversion component; and the rotating shaft is rotationally connected into the protective cover through a bearing. According to the slip ring, the problems that a common slip ring is short in service life and large in radial run-out at the rotating speed of 6000 rpm are solved, and continuous long-time normal transmission of the slip ring can be effectively guaranteed.

Provided is a slip ring for use with a sealing assembly, a sealing tool, and a method for sealing an annulus within a wellbore. The slip ring, in at least one aspect, includes an expandable metal ring member having a width (w), a wall thickness (t), an inside diameter (di) and an outside diameter (do), the expandable metal ring member comprising a metal configured to expand in response to hydrolysis. The slip ring, in at least one aspect, further includes one or more cuts located in the wall thickness (t) and spaced around a circumference of the expandable metal ring member, the one or more cuts configured to allow the expandable metal ring member to move between a radially reduced state and a radially enlarged state.

The invention discloses a space light photoelectric composite slip ring which comprises a bearing, a rotor assembly and a stator assembly. The rotor assembly comprises a photoelectric slip ring main shaft frame, a conductive slip ring loop and an optical fiber collimator; the conductive slip ring loop is separated by a conductive slip ring insulating ring and is arranged at the periphery of the photoelectric slip ring main shaft frame; the photoelectric slip ring main shaft frame is connected with the inner ring of the bearing through a bearing inner pressing ring; the stator assembly comprises a photoelectric slip ring main shaft seat, a conductive slip ring brush holder and an eccentric gland. The conductive slip ring brush holder is connected with the photoelectric slip ring spindle seat; the eccentric gland is connected with a photoelectric slip ring spindle seat, and an unequal-thickness adjusting ring is arranged between the eccentric gland and the photoelectric slip ring spindle seat; the optical fiber collimator is mounted on the eccentric gland; the photoelectric slip ring spindle seat is connected with the outer ring of the bearing through an eccentric gland. An optical transmission system and an electric transmission system are integrated into the same shaft system, the purposes of miniaturization and light weight are achieved, the cost is controlled, precision and reliability are high, and the optical transmission system has good environmental applicability and long service life.

The invention discloses a magnetic field auxiliary dry type electrochemical polishing device and method for the inner surface of a pipeline, and the device comprises a base which is provided with a double-sliding-block displacement table, and the double-sliding-block displacement table is provided with a lower sliding block and an upper sliding block; a motor clamp is arranged on the upper sliding block, a motor is arranged on the motor clamp, the motor is connected with an electrode clamp, and the electrode clamp clamps an electrode; a workpiece clamp is arranged on the lower sliding block, a workpiece is arranged on the workpiece clamp, a lower container is arranged below the workpiece, an annular magnet is arranged outside the workpiece in a surrounding mode, and an inner space formed by the workpiece and the lower container is filled with a solid medium. The electrode clamp is connected with the rotating end of the conductive slip ring, and the static end of the conductive slip ring is connected with the anode of the power supply through a wire. The magnetic field assists in regulating and controlling ion migration, dry type electrochemical polishing is achieved by combining the synergistic effect of the two electrodes, liquid electrolyte pollution is avoided, and the device has the advantages of being high in polishing uniformity, convenient and fast to operate and low in cost and is suitable for precise runner inner surface treatment of the additive manufacturing pipeline.

The utility model discloses a mobile photovoltaic cleaning robot, which relates to the technical field of cleaning robots and comprises a vehicle body component, cleaning rolling comb components mounted on two sides of the vehicle body component and a water slip ring component mounted on the upper side of the vehicle body component. A driving synchronous wheel and a driven synchronous wheel are arranged on the two sides of the box body frame respectively, a crawler belt is connected between the driving synchronous wheel and the driven synchronous wheel, and the water slip ring assembly comprises a rotating joint. The photovoltaic panel cleaning device can automatically move on a photovoltaic panel for cleaning, through a precise system framework, the system waterway is perfect, the cleaning rolling brush assembly is convenient to install, and the photovoltaic panel cannot be damaged during cleaning.

The utility model provides a liquid-cooled ultrahigh rotation speed liquid conductive slip ring, which belongs to the technical field of conductive slip rings, and comprises a shell, a bearing, a rotor shaft and a stator shaft, the stator shaft is arranged at one end of the shell, the rotor shaft is rotatably arranged at the other end of the shell through the bearing, a cooling liquid flow channel is arranged in the shell around the periphery of the bearing, and the cooling liquid flow channel is communicated with the stator shaft. A cooling liquid opening communicated with the cooling liquid flow channel is formed in the cooling liquid flow channel; the cooling liquid flow channel is arranged in the shell, and the cooling liquid opening is formed in the cooling liquid flow channel, so that cooling liquid can be effectively introduced for heat dissipation, heat accumulation generated when a bearing and a sealing piece rotate at a high speed is reduced, the overheating condition is prevented, lubrication failure and part abrasion caused by overheating are reduced, and the service life of the bearing is prolonged. Therefore, the service life of the slip ring is prolonged and the reliability of the conductive slip ring is improved.

The utility model discloses a slip ring for a motor, relates to the technical field of electric slip rings, and aims to solve the problems that the slip ring provided by the background technology is damaged due to long-time operation, low inter-ring insulation, low ground insulation and the like easily occur, and the existing slip ring is large in size, heavy in weight and low in practicability. Comprising an installation mechanism, the installation mechanism comprises an inner steel sleeve and an inner insulation sleeve, a slip ring assembly is arranged outside the inner insulation sleeve, the slip ring assembly comprises three slip ring sleeves, three leads and two inter-ring insulation sleeves, connecting grooves are formed in the outer walls of one sides of the slip ring sleeves, the three leads are fixedly arranged on the inner walls of the three slip ring sleeves respectively, and the outer walls of the inner insulation sleeve are sleeved with the two inter-ring insulation sleeves respectively. A small end cover is arranged outside the sliding ring sleeve, and six installation openings are formed in the small end cover. The utility model has the advantages of small volume, light weight, compact structure and large conductive bearing capacity, the phenomena of low inter-ring insulation, low ground insulation and the like are not easy to occur in the long-time operation process, and the practicability is improved.

The utility model discloses a tensile copper stranded wire, comprising a copper wire group, the copper wire group is formed by winding a plurality of copper wire cores, the two ends of the copper wire group are fixedly connected with fixing heads, the heads of the fixing heads are provided with connectors, the outer circumferential surface of one end of each connector is provided with two projections, one end of each connector is provided with a clamping head, and the clamping head is provided with a clamping groove. During installation, the fixing head is in threaded connection with the interior of the threaded hole of the connector, the two protruding blocks of the connector sequentially penetrate through the first cutting groove and the second cutting groove, so that the bottoms of the protruding blocks are clamped to the sliding ring, it can be guaranteed that the head of the connector is located above the sliding ring by rotating the connector, and installation is easy and convenient; the connector pulls the sliding ring to slide downwards along the sliding groove, the buffer spring is pressed to buffer the sliding ring, the copper wire core can be buffered and extended, the copper wire core is prevented from being pulled and damaged, the tensile property of the copper wire core is improved, and the service life of the copper wire core is further prolonged.

The invention relates to the technical field of oil field oil production engineering, in particular to an underground data acquisition unit with flow, pressure and temperature monitoring functions and a method. The method is suitable for underground working condition monitoring of submersible motor type lifting equipment such as submersible screw pumps, submersible plunger pumps and submersible centrifugal pumps. The unit comprises a pressure-resistant shell, wherein a central pipe, an electromagnetic flowmeter, two pressure and temperature sensors and an underground parameter collector are integrated in the pressure-resistant shell; the two sensors are used for measuring the temperature and pressure of liquid flow of the central pipe and the temperature and pressure of an oil casing annulus respectively; the electromagnetic flowmeter measures the flow, and real-time temperature and pressure data are used for compensation to improve the precision. The unit is further provided with a collecting pipe, an upper end, a lower end, a connecting sliding ring, an annulus / oil pipe inner testing channel, a sealing rubber ring and the like. Through the integrated design, synchronous high-precision in-situ monitoring of underground key parameters is achieved, the problem that underground data of multiple instruments are not synchronous is solved, and a reliable data terminal is provided for an intelligent oil field.