25results about How to "Improve running accuracy" patented technology

The invention provides a copper-nickel alloy friction film based wind power gear oil additive composition and a preparation method thereof, belongs to the technical field of lubricating oil, and aims to solve the technical problems of low bearing capacity and poor antifriction effect of a friction film formed by wind power gear oil. The wind power gear lubricating oil comprises the following components in percentage by mass: 0.8%-1.4% of a sulfur-containing extreme pressure agent, 0.4%-1.0% of a phosphorus-containing anti-wear agent, 0.5%-1.5% of copper nanoparticles, 0.5%-1.0% of nickel acetylacetonate, 0.15%-0.25% of an antioxidant, 0.1%-0.20% of an anti-rust agent, 0.015%-0.025% of an anti-foaming agent, 0.04%-0.05% of a demulsifying agent, 0.4%-0.8% of a dispersing agent and 93.8%-97.1% of synthetic base oil, and the sum of the percentages of the components is 100%. Nickel acetylacetonate forms high-activity nickel ions under friction induction, the high-activity nickel ions react with a friction pair substrate to form an alloy interface layer, and meanwhile the alloy interface layer and copper nanoparticles form a high-strength copper-nickel alloy friction film through interface alloy.

The invention relates to the technical field of glass fiber chopping equipment, in particular to an automatic feeding continuous online chopping machine and a control method thereof. The automatic feeding continuous online chopping machine comprises a first chopping unit, a second chopping unit, a first telescopic mechanism, a first lifting mechanism, a second telescopic mechanism and a second lifting mechanism, the first lifting mechanism and the second lifting mechanism are arranged on the rack; the first telescopic mechanism and the second telescopic mechanism are respectively arranged on the first lifting mechanism and the second lifting mechanism; the first chopping unit and the second chopping unit are arranged on the first telescopic mechanism and the second telescopic mechanism respectively. Circulation of the units is completed through lifting and telescopic movement of the two chopping units, the operation difficulty of yarn leading and head feeding and yarn leading and head changing is reduced, the structural complexity of the chopping units is simplified, the equipment operation efficiency and the operation completion precision are improved, and meanwhile, environment pollution and resource waste caused by generation of fine yarn particles can be avoided.

The utility model discloses a servo motor with a multi-structure vibration damping function, and particularly relates to the technical field of servo motors, the servo motor comprises a servo motor body, a vibration damping protection mechanism is arranged on the outer side of the servo motor body, the vibration damping protection mechanism comprises a protection shell, the protection shell is arranged on the outer side of the servo motor body, and threaded holes are formed in the surfaces of the two sides of the protection shell. And threaded rods are in threaded connection in the threaded holes. According to the utility model, through the arrangement of the vibration reduction protection mechanism, and through various structures and modes of the damping plate, the rubber plate, the polymer buffer pad and air compression, the vibration of the motor is buffered and reduced from different layers and angles, the vibration reduction effect is greatly improved, the influence of vibration on the motor and peripheral equipment can be effectively reduced, and the service life of the motor is prolonged. The motor is clamped and fixed conveniently, the stability of the motor is guaranteed, displacement or instability caused by vibration is reduced, the vibration reduction effect is improved, and normal operation and working precision of the motor are facilitated.

The application provides a wheelchair control system based on motor imagery electroencephalogram signals and surface electromyogram signals, and relates to the technical field of brain-computer control, comprising a data acquisition module, a system mode selection module, a signal processing module and a decision module; the data acquisition module is used for acquiring physiological signals of a wheelchair user and sending the physiological signals to the system mode selection module; the system mode selection module is used for selecting a processing mode of the physiological signals; the signal processing module is used for pre-processing the physiological signals and extracting signal features for identification; the signal processing module sends an identification result to the decision module; the decision module is used for fusing multiple instruction information and converting the instruction information into a final wheelchair control instruction, and outputting the control instruction to the wheelchair. The application can improve the operation accuracy of the control system, reduce the fatigue of the user when performing motor imagery behavior, improve the user experience and the application performance of the wheelchair control system, and expand the user range of the brain-controlled wheelchair.

The utility model relates to the technical field of hairdressing equipment, in particular to a rotary adjustable hair curling rod which comprises a shell, a hair curling assembly, a rotary shifting piece and an upper limiting block. The gear set of the rotary base is meshed with the driven gear, and the second gear teeth of the rotary shifting piece are meshed with the gear set, so that accurate rotation control over the curling iron is achieved, the curling angle and the curling direction can be adjusted more flexibly and stably, the curling effect and the user experience are improved, and the practicability is high. The heating piece is guided through the first moving guide rail and the second moving guide rail, the stability and accuracy of the heating piece in the hair curling process are guaranteed, the problems that a traditional hair curling rod is uneven in heating and unsmooth in hair curling are solved, the hair curling quality is effectively improved, and the upper limiting block and the top cover improve the structural stability of the hair curling rod and improve the hair curling efficiency. And in addition, the use safety is improved, the heating piece is prevented from accidentally falling off or shifting, and safer and more reliable use experience is provided for a user.

The invention relates to a non-contact double-layer self-diversion efficient waterproof electric spindle special for an aluminum plate machine, which comprises a machine body, a stator coil and a rotor shaft are arranged in the machine body, and the front end and the rear end of the rotor shaft are rotationally arranged in the machine body through a front bearing pack and a rear bearing pack respectively; the outer side of an inner ring of the front bearing pack is locked through a locking nut, and the outer side of an outer ring is connected with the front cover; an inner ring of the rear bearing pack is installed on the rotor shaft through a gland, and the rear bearing pack is further connected with an elastic pre-tightening structure. A complex contact type sealing structure is abandoned, non-contact type sealing is adopted, and friction is avoided; a double-layer sealing structure is arranged, so that water mist generated by an external complex environment during machining of the aluminum plate machine can be effectively prevented from invading, the machining precision is ensured, and the service life is prolonged; the rotor shaft expands and contracts slightly due to thermal expansion and contraction caused by temperature change in the operation process, and the elastic pre-tightening structure ensures that the bearing can keep a certain pre-tightening force in the thermal expansion and contraction process of the rotor shaft.

The invention discloses a selenium sand melon growth monitoring management method and system based on Internet of Things, and particularly relates to the technical field of data management. A planting area is divided into a plurality of monitoring areas, sensor data are collected in real time, the matching condition of the data and a historical range and the overlapping degree of data of multiple land parcels are analyzed, and the possible problem of equipment binding errors or serial number confusion is recognized; when the data overlapping degree is high, an operation instruction sent by the management system and an equipment feedback signal are recorded, and the fluctuation condition of the equipment response success rate is analyzed; according to the method, data overlapping and response success rate fluctuation are integrated, the accuracy of system operation execution is evaluated, when the accuracy is low, control logic and decision threshold values are dynamically adjusted by predicting an accuracy coefficient in a fixed time period, so that large-area crop loss caused by decision errors is effectively avoided, the accuracy and reliability of system operation are improved, and the system performance is improved. And high efficiency and stability of agricultural production are guaranteed.

A power module (100) is provided, and includes a housing (1), a first bridge arm assembly (2), and a second bridge arm assembly (3). Both the first bridge arm assembly (2) and the second bridge arm assembly (3) are installed in the housing (1), and an insulating member (7) is arranged between the first bridge arm assembly (2) and the second bridge arm assembly (3). The first bridge arm assembly (2) has an alternating current terminal (21). The second bridge arm assembly (3) has a direct current terminal (31). A projection of the alternating current terminal (21) on a plane on which the direct current terminal (31) is located at least partially overlaps the direct current terminal (31). At least a part of the insulating member (7) is arranged between the alternating current terminal (21) and the direct current terminal (31).

The actuator for the valve comprises a motor, a magnetic sensor and a transmission assembly, the transmission assembly comprises a transmission piece and a magnetic piece, the transmission piece comprises a transmission part and at least one installation part, the transmission part is connected with the motor so as to be driven by the motor to rotate, and the magnetic piece is arranged on the transmission part. The mounting part is arranged on the side, away from the motor, of the transmission part and comprises a plurality of elastic pieces arranged at intervals. At least one mounting hole is formed in the magnetic part, the magnetic part is matched with the magnetic sensor, the mounting part is inserted into the mounting hole and is in limiting fit with the magnetic part in the circumferential direction of the transmission part, and the transmission part is in limiting fit with the magnetic part in the axial direction of the transmission part. According to the actuator for the valve, in the installation process of the magnetic piece, the installation part can generate certain elastic deformation, and the damage risk of the magnetic piece in the installation process can be reduced.

The utility model relates to the technical field of drainage equipment, in particular to a crank gear assembly suitable for a transmission system of a liquid adding pump, which comprises a crank gear used for outputting power; the crank gear comprises a gear disc, a supporting part which is arranged at one shaft side end of the gear disc and is used for supporting the gear disc from the bottom, and a connecting part which is arranged at the other shaft side end of the gear disc and is used for limiting and supporting the gear disc along the radial surface; the connecting part comprises a lower connecting part and an upper guide part, the lower connecting part is arranged in a lower shell of the liquid adding pump and used for being connected with the supporting part to support the gear disc, and the upper guide part is arranged in an upper shell of the liquid adding pump and used for being connected with the joining part; and the connecting part is in sliding fit with the upper guide part.

The present invention discloses a dewatering spiral device, characterized in that: the cavity plate is fixedly installed in the spiral shell, the pressure plate is installed on the cavity plate and a polytetrafluoroethylene plate is installed between the pressure plate and the cavity plate, the skeleton seal is installed in the annular groove on the pressure plate and the skeleton seal is tightly sleeved on the spiral shaft, the left end of the transmission shaft is installed on the left side of the center hole of the bearing seat through an angular contact tapered roller bearing and a left self-aligning bearing, the driven pulley is installed on the left end of the transmission shaft, the right end of the transmission shaft is installed on the right side of the center hole of the bearing seat through a right self-aligning bearing, the right bearing cover is installed on the right side of the bearing seat and the right bearing cover is pressed on the right self-aligning bearing, the right lip seal is installed in the annular groove on the right bearing cover and the right lip seal is tightly sleeved on the transmission shaft. The present invention has good sealing effect, effectively solves the problem of water leakage at the shaft end, meets the use performance of the equipment, operates stably and reliably, improves the drainage effect, and thus improves the output of spiral conveying.

The invention discloses a distributed vibration bilateral servo electric cylinder driving control system for a membrane bioreactor, relates to the technical field of electric cylinder driving control, and solves the technical problems that in the prior art, motors on the two sides cannot be regulated and controlled during operation of the membrane bioreactor, so that the balance of the positions of the left and right ends of the motors on the two sides cannot be ensured. The motor leveling control unit is used for conducting motor regulation and control on the driving process, collecting motor leveling information, substituting the motor leveling information into a formula to obtain a motor leveling control coefficient, and conducting comparison according to a coefficient threshold value to deduce whether motor regulation and control are normal or not. The driving control monitoring unit obtains control deviation information and control delay information, and deduces whether driving control monitoring is normal or not according to information comparison; and the electric cylinder control analysis unit is used for collecting electric cylinder adjustment data and electric cylinder position data and deducing whether electric cylinder control is normal or not according to data analysis and comparison.

The present invention relates to a high-precision magnetic nano film lubrication device. The device mainly solves the technical problems of excessive operating torque and slow response speed of deep groove ball bearings, which greatly reduce the operating life of the bearings or even make them fail. The technical solution of the present invention is: the device includes a rotating shaft, an end cover, a housing and an elastic retaining ring, and also includes a first permanent magnet, a second permanent magnet, a plurality of needle rollers, an outer ring, an inner ring, a retaining frame, an outer ring pressure cover and an inner ring pressure cover, the first permanent magnet is mounted on a first mounting cavity provided on the outer circumference of the outer ring, the second permanent magnet is mounted on a second mounting cavity provided on the inner circumference of the inner ring, a needle roller mounting cavity is formed between the inner circumference of the outer ring and the outer circumference of the inner ring, the plurality of needle rollers are evenly mounted in the needle roller holes of the retaining frame, the retaining frame and the needle rollers are mounted in the needle roller mounting cavity, the inner ring, the second permanent magnet and the inner ring pressure cover are sleeved on the rotating shaft, and the outer ring, the first permanent magnet and the outer ring pressure cover are arranged in the inner cavity provided in the housing.

The present invention relates to a test method for a double-end mechanical seal static pressure operation test bench, which belongs to the technical field of detection equipment. The present invention includes a bearing box, a pressure chamber first section, a pressure chamber tail section, a transmission main shaft, a core shaft, a replaceable sleeve, a flange cover, a liquid receiving chamber, a high-pressure cooling tank, etc. The pressure chamber first section is installed on the bearing box and constitutes a sealed pressure chamber, the pressure chamber tail section is installed on the pressure chamber first section and constitutes a second sealed chamber, one end of the core shaft is positioned with the transmission main shaft through a central cone hole, and the other end of the core shaft is supported by a rolling bearing. A set of accompanying test products and a set of tested mechanical seal products are installed on the core shaft at the same time, and the sealed pressure chamber and the high-pressure cooling tank are connected to each other through a pipeline. During operation, the detection test of double-end mechanical seal products of different sizes can be realized by replacing the replaceable sleeve. The present invention has the advantages of high spindle operation accuracy, high upper limit of allowable pressure, good cycle temperature control effect, wide range of applicable detection products, and convenient operation and maintenance.

The invention provides a running method and device of a development file, equipment and a storage medium, and is used for solving the problem of relatively low file running efficiency. The method at least comprises the following steps: receiving a resource association request from a client; wherein the resource association request carries a file identifier of a target file and a resource identifier of a pre-configured resource; the pre-configured resources comprise schedulable resources pre-allocated from a resource cluster and an operating environment pool pre-configured in the schedulable resources; based on the resource identifier, scheduling the schedulable resource to create a kernel process, and allocating one operating environment in the operating environment pool to the kernel process; establishing a communication connection with the kernel process based on the file identifier; and when a file running instruction for the target file is received, calling the kernel process to run the target file based on the communication connection, and obtaining and returning a file running result. The starting time consumption of the kernel process is reduced through resource presetting, so that the file running efficiency can be improved.

The present invention discloses a double feeding device, including a first feeding mechanism, a second feeding mechanism, and a cutting mechanism arranged at the discharge ends of the first feeding mechanism and the second feeding mechanism; the first feeding mechanism includes a first bracket, a feeding assembly arranged at the first bracket, a cutting assembly arranged at the discharge end of the feeding assembly, and a transfer assembly arranged at the discharge end of the cutting assembly; the transfer assembly is located at the feed end of the cutting assembly. The feeding mechanism of the present invention feeds the film, and the first feeding mechanism feeds the film, and the two meet at the cutting mechanism, and the film is attached to the film. The double feeding device can feed at the same time, and wrap the film on the inner side of the film sheet, so that the mark is not easy to wear. The present invention simplifies the process of shaping the film of the workpiece, and upgrades the film from manual to automatic; the automatic equipment has high manual positioning accuracy, high consistency, and high operation accuracy, which effectively improves production capacity, reduces labor costs, and improves production safety.

The present application relates to the field of medical devices, and more specifically, to a rotating test tube code scanning device, system, and test tube code scanning assembly line. The moving mechanism of the device drives the rotating part and the abutting part to approach each other and abut the test tube, and the rotating mechanism drives the rotating part to rotate, thereby driving the test tube to rotate. Since the barcode of the test tube is attached to the wall of the test tube, the barcode on the wall of the test tube can be rotated by rotating the test tube. Furthermore, the code scanner is arranged at the notch of the accommodating space, and when the rotating part drives the test tube to rotate to the notch, the code scanner can scan the barcode on the test tube. In this way, even if the barcode on the test tube initially installed in the test tube rack is not facing the code scanner, by rotating the test tube, it can be ensured that the barcode on each test tube is scanned by the code scanner. The rotating test tube code scanning device not only greatly improves the accuracy and reduces the occurrence of human errors, but also improves production efficiency.

The utility model provides a spherical roller bearing which meets at least one of the following conditions: a) in the circumferential direction, the first axial circumferential run-out tSd1 of a first axial end face of an inner ring relative to an axis determined by the inner circumferential surface of the inner ring is 2.647 * 10 <-5 > * d + / -2 microns, d is the nominal inner diameter of the inner ring, and the unit is mm; b) in the circumferential direction, the inner ring first perpendicularity tSdr1 of an inner ring first selected position on the inner circumferential surface at the first axial end of the inner ring relative to the second axial end face of the inner ring is 4.412 * 10 <-5 > * d + / -2 [mu] m, where d is the nominal inner diameter of the inner ring and the unit is mm; c) in the circumferential direction, the outer ring first perpendicularity tSD1 of an outer ring first selected position on the outer circumferential surface at the first axial end of the outer ring relative to the second axial end face of the outer ring is 1.25 * 10 <-5 > * D + / -2 [mu] m, where D is the nominal outer diameter of the outer ring and the unit is mm; and d) the radial clearance C between the roller and the inner surface of the outer ring is greater than or equal to 5.588 * 10 <-4 > * d and less than or equal to 7.941 * 10 <-4 > * d, wherein d is the nominal inner diameter of the inner ring, and the unit is mm.

The utility model provides a linear guide rail type AGV (Automatic Guided Vehicle) multi-mode positioning mechanical device, which belongs to the technical field of AGV multi-mode positioning mechanical devices and comprises a linear guide rail, the surface of the linear guide rail is connected with a driving sliding table mechanism in a sliding manner, and the two sides of the driving sliding table mechanism are respectively provided with a lubricating spraying assembly. A mounting platform is fixedly connected to the top of the driving sliding table mechanism, wiping and cleaning assemblies are arranged on the two sides of the bottom of the mounting platform, an AGV body is adaptively mounted on the top of the mounting platform, and the lubricating and spraying assembly comprises a lubricating oil tank. Through the arrangement of the lubrication spraying assembly, lubricating oil can be automatically sprayed between the linear guide rail and the driving sliding table mechanism, the lubrication degree between the linear guide rail and the driving sliding table mechanism is increased, the abrasion degree between the linear guide rail and the driving sliding table mechanism is reduced, and the operation accuracy of the linear guide rail and the driving sliding table mechanism is improved; zero manual maintenance is realized, and the labor capacity of workers is reduced.

The utility model provides a kind of intelligent equipment base sealing type cycloid speed reducer, belong to the field of speed reducer, it includes shell and be located in shell inside first reduction mechanism and second reduction mechanism, shell includes first shell body and second shell body, first reduction mechanism includes the input gear shaft being all arranged in two shell bodies, planetary gear set and front planet carrier, second reduction mechanism includes the rear planet carrier being all arranged in accommodating space, eccentric shaft group, cycloid and multiple needle rollers;First shell body includes the first flange plate, first shell main body and second flange plate integrally connected in turn, second flange plate is connected with second shell body, first shell main body is cylindrical and is coaxial with input gear shaft, along first direction, bearing mounting space and planet carrier installation space are formed in the inside of first shell main body, the diameter of bearing mounting space is less than the diameter of planet carrier installation space.Compared with prior art, the utility model improves the problem that the sealing property and manufacturing cost of existing speed reducer cannot meet the requirements.

The invention discloses an intelligent monitoring method and system for the operating environment of a water meter well, relates to the technical field of environmental control, and solves the technical problem in the prior art that it is impossible to predict the external impact before and after the external impact when monitoring the water meter well environment. Specifically, the method includes prediction before the external impact, before the external impact occurs at the location of the water meter well, and inferring whether the current external impact is prone to occur according to the location environment analysis, determining the priority water flow direction and the synchronous water flow direction inside the water meter well, and obtaining the information before the external impact, substituting it into a formula to obtain the prediction coefficient before the external impact, and inferring the impact prediction probability according to the coefficient comparison; prediction after the external impact, performing real-time prediction and analysis after the external impact occurs at the location of the water meter well, collecting the real-time external impact information and the external continuous impact information, and inferring the impact degree of the current external impact according to the information analysis.

The present invention provides a sidewalk brick maintenance vehicle and method, which includes a rear body, a cab on the rear body, a cement box on the back of the cab; the rear body is connected to the front body by pins, the front body has a fixed support platform, a waste storage mechanism is provided below the fixed support platform, the waste storage mechanism has a telescopic bearing, and the telescopic bearing can push the waste storage box to slide forward and backward; a cleaning arm and an excavation filling arm are provided above the fixed support platform, and the cleaning arm and the excavation filling arm can rotate on the fixed support platform to adjust the angle of the two arms on the horizontal plane; the movement of the whole vehicle is realized by a drive system; the cab controls the operation of the cement box, the waste storage mechanism, the cleaning arm, the excavation filling arm and the drive system. This maintenance vehicle can be used to replace damaged bricks on the road, thereby replacing the traditional manual replacement operation, effectively improving the replacement efficiency and reducing the labor intensity of the operators.

The present invention discloses a design method for a space long-life bearing assembly, comprising the following steps: S1, establishing a bearing dynamics analysis model; S2, optimizing the bearing dynamics analysis model for plastic deformation failure and long-term fatigue failure of the space bearing under harsh working conditions; S3, analyzing the wear life of the space composite material cage for wear failure of the composite material cage, and determining the cage material; S4, designing a supplementary oil supply setting for the space long-life bearing for lubrication failure caused by lubricating oil loss; S5, conducting a long-life test on the space bearing determined in the above steps to verify that the space bearing has long-life performance. The method of the present invention can improve the reliability of the space rotating mechanism, reduce mechanical system failures, improve platform operation accuracy, reduce maintenance requirements, and extend the service life of space equipment.

The present invention discloses a high-speed intelligent pillow packaging machine, on which a material conveying mechanism, a film pulling mechanism, a film pulling longitudinal sealing mechanism, a material guiding mechanism, and a finished product discharging mechanism are sequentially installed on the main engine arch, and a transverse driving power source is installed on the main engine arch and between the material guiding mechanism and the discharging mechanism, and a transverse slide is installed on the transverse driving power source, and upper and lower longitudinal driving power sources are installed on the transverse slide, and an upper longitudinal slide is installed on the upper part of the upper and lower longitudinal driving power sources, and a lower longitudinal slide is installed on the lower part, and an upper heat sealing knife is installed on the upper longitudinal slide through an upper bracket, and a lower heat sealing knife is installed on the lower longitudinal slide through a lower bracket. A cutting knife is installed on the upper bracket and inside the upper heat sealing knife. The present invention effectively simplifies the transmission mechanism of the equipment, reduces the working operation noise, improves the bag mouth sealing effect, and improves the operating speed and precision; it can meet the urgent requirements of users for high-speed production, cost reduction and optimized working environment.

A kind of suspension type maintenance platform, including top frame, motor is fixedly arranged on top frame, first transmission wheel is fixedly arranged on the output shaft of motor, transmission shaft is arranged on top frame, steel wire rope reel is fixedly arranged at the both ends of transmission shaft, lifting platform is arranged below top frame, the steel wire rope of steel wire rope reel is connected with lifting platform;One guide structure is respectively arranged at the four corners of the lower side of top frame, guardrail is arranged around lifting platform, locking mechanism is arranged on guardrail.The utility model drives lifting platform to go up and down by motor, steel wire rope reel and multiple steel wires, and guarantees operating stability by guide wheel and guide structure, ensure that lifting platform is along set path smooth operation, improve operating accuracy, guardrail improves the protection capability of maintenance platform, locking mechanism can improve the high-altitude stability of lifting platform, reduce shaking, ensure that maintenance personnel safely carry out maintenance operation.