99results about How to "Short duty cycle" patented technology

The invention relates to a magnetic levitation compound molecular pump which comprises a pump casing, an impeller, spacer rings, stationary blades, a traction-level stator, a permanent magnet high-speed motor, an upper protection bearing, a lower protection bearing, a five-degree-of-freedom magnetic levitation bearing system and a controller. The magnetic levitation compound molecular pump adopts a turbine level and traction level combined design, has a wide pressure range (from 10<-6> Pa to 1 Pa), a high pumping speed, a high compression ratio and a high ultimate vacuum degree, and meets the using requirements of high vacuum and ultrahigh vacuum application industries. meanwhile, the magnetic levitation compound molecular pump adopts a five-degree-of-freedom magnetic levitation bearing, is free of mechanical contact, can achieves a high rotational speed, and has the advantages of no mechanical abrasion, low energy consumption, low noise, long service life, no need for lubrication, no oil stain and the like.

The invention relates to a multi-view three-dimensional reconstruction method and system based on an unmanned aerial vehicle. The method comprises the steps that, an image acquisition device, carried by the unmanned aerial vehicle, acquires a plurality of two-dimensional images of a target building in multiple preset orientations and from multiple preset views; and an image processing, according to the plurality of two-dimensional images acquired by the image acquisition device, generates a three-dimensional model of the target building by use of preset image processing software. The multi-view three-dimensional reconstruction method and system are advantageous in that, the three-dimensional model of the target building can be generated according to multi-view images of the target building, surface data of a target historic building can be obtained in an overall way, implementing difficulty of the method is low, use devices are cheap, work period is short, fund input is reduced, and the two-dimensional reconstruction is with high precision and good effect.

The invention discloses a copper-aluminum socket connector for the electric conduction, the preparation method thereof and the application thereof. The socket connector comprises an aluminum body and a copper plug integrated into a whole by welding. The preparation method comprises the following steps: (1) manufacturing the molded aluminum body and the copper plug, and cleaning the welding surfaces of both the aluminum body and the copper plug; and (2) welding the aluminum body and the copper plug into an integrated part by adopting a flash welder or a spin friction welder to obtain the copper-aluminum socket connector semi-product for the electric conduction. The socket connector is mainly applied to a moving contact, a static contact or a conductive contact arm in a high and low voltage switch cabinet or a vacuum circuit breaker. The socket connector has the advantages of non-contact resistance, no galvanic corrosion, smaller resistance, less current conveyance loss, improved current transmission efficiency and reduced power transmission and transformation loss.

The invention relates to a manual capsule coffee maker which comprises brewing mechanisms (2, 6, 10, 14 and 29), driving mechanisms (21-27), capsule feeding mechanisms (3,4,5 and 7), capsule guiding mechanisms (15-18) and capsule automatic push-out mechanisms (8-13) and is characterized by also comprising a bracket (1),wherein the bracket (1) is provided with gear structures (36 and 38); the capsule guiding mechanisms (15-18) at least have coffee capsule gripping positions and coffee capsule releasing positions; during operation, the brewing mechanisms (2, 6, 10, 14 and 29), the brewing mechanisms (2, 6, 10, 14 and 29), the capsule guiding mechanisms (15-18) and the gear structures (36 and 38) works together to switch the capsule guiding mechanisms (15-18) between the coffee capsule gripping positions and the coffee capsule releasing positions. The invention has the advantages of reliable performance, shorter working period and less mechanical parts.

The invention discloses a mooring system embedded in the sea bottom. The mooring system embedded in the sea bottom comprises a stabilization rack, an anchoring bushing, a knocking hammer and an anchor. The stabilization rack is provided with a connection frame, the anchoring bushing is sleeved with the connection frame in a matched mode, and the anchoring bushing is shaped like a barrel and is provided with an opening. The upper end of the anchoring bushing is fixedly connected with a main inhaul cable. The knocking hammer is arranged on the main inhaul cable in a sleeving mode and can move vertically along the main inhaul cable to knock the anchoring bushing. The anchor comprises an anchor body, an anchor bolt capable of being bent downwards, an anchor hammer and an anchor blade capable of being spread outwards. The anchor is connected in the anchoring bushing in a sliding mode through the opening of the anchoring bushing, and the anchor bolt is located below the anchoring bushing. The knocking hammer knocks the anchoring bushing and the anchoring sleeve impacts the anchor bolt, and therefore the anchor bolt can drive the anchor to be thrown into the sea bottom. After the anchoring bushing impacts the anchor bolt for several times, the anchor bolt is bent downwards, the anchoring bushing impacts the anchor hammer to enable the anchor hammer to abut against the anchor blade, and the anchor blade is deformed and spread outwards to make the anchor be fixed at the sea bottom. According to the mooring system embedded in the sea bottom, the mode of embedding an anchor in the surface layer is changed into a deep layer embedding mode that the anchor is embedded into the sea bottom, and therefore the mooring capacity of the anchor is greatly improved.

The invention relates to an automatic double-station screw assembly and disassembly mechanism. The mechanism is of a left-right symmetric structure, and comprises a hydraulic device, a piston rod, a machine frame, a station outer frame, a direct-current motor, a first bearing, a second bearing, a driving gear, a driven gear, a large-torque-proof device, a first shaft, a second shaft, a third bearing, a mechanics sensor, a screwdriver head and a third shaft. The automatic double-station screw assembly and disassembly mechanism is economical, durable, reliable, excellent in quality, low in price, simple in structure, easy to machine and manufacture, easy to operate, convenient to maintain, suitable for assembly and disassembly of various screws, high in drilling speed and efficiency, short in operation cycle and low in comprehensive cost.

The invention discloses a split spherical roller bearing, which is provided with an outer ring (1) and an inner ring (2); a retainer (6) is arranged between the outer ring (1) and the inner ring (2); and the inside of the retainer (6) is provided with two groups of spherical rollers (4). The split spherical roller bearing is characterized in that: the outer ring (1), the inner ring (2) and the retainer (6) all consist of two axially split parts; the outer ring (1) and the inner ring (2) are connected into a whole through a clamp ring (7); and the retainer (6) is connected into a whole through two elastic connecting sheets or U-shaped clamps. Because the structure is split, and the split spherical roller bearing can be radially assembled, and convenient to assemble and disassemble, the split spherical roller bearing shows obvious advantages in the condition that major axes and multi-diameter shafts are assembled, particularly an intermediate journal is smaller than two ends and the like. The mounting, maintenance, and replacement of parts are simple and convenient, the working period is short and the labor amount is less.

The invention discloses a tool used for taking a casing underground at a fixed point and a using method, belongs to the technical field of a process of taking the casing underground, relates to the tool for taking the casing underground in an oil field and the using method, in particular to the tool used for taking the casing underground at the fixed point and the using method. The tool solves the problem that the casting cannot be taken at the fixed point due to insufficient torque in a construction process, is simple to operate and accurate in positioning. The tool comprises a planetary reducer, a collar locator, a compensator and an anchoring device, which are in threaded connection from top to bottom in sequence. The using method comprises the following steps: step I, feeding the tool used for taking the casing underground at the fixed point into a predetermined depth which needs replacing the casing by virtue of a ground workover operating vehicle; step II, determining a casing collar position; step III, lifting a tubular column to reach load for replacing the casting; and step IV, pulling out the tool used for taking the casing underground at the fixed point and the replaced casing.

The invention relates to a method for simultaneously completing gene loci, chromosomes and linkage analysis, specifically including the acquisition of embryonic cell samples, whole genome amplification, target gene mutation site amplification, whole genome amplification products and target gene mutation sites The main steps of database construction, high-throughput sequencing and data analysis, through the use of whole genome amplification technology combined with high-throughput sequencing, multiple comprehensive tests can be completed in one step, avoiding the use of multiple methods and steps for single-gene genetic diseases Detection of mutation sites, chromosomal disorders and linkage analysis. The method provided by the present invention provides favorable conditions for micro-sample, not only can be used for PGD detection to determine whether the embryo carries a disease-causing gene and abnormal chromosome copy number; it is also suitable for genetic screening of embryos of recurrent miscarriages and elderly women, realizing a Steps to complete multiple detections of a single sample. Because of its simple operation, short period and strong feasibility, it is beneficial to popularization and application.

The invention provides a ZPW-2000A type uninsulated track circuit fault diagnosis method based on a DBM-SVM. The ZPW-2000A type uninsulated track circuit fault diagnosis method based on the DBM-SVM isused for solving the problems of randomness, low diagnosis precision, large error and long period of manual detection. The diagnosis method comprises the following steps: dividing original data intoa training sample set and a test sample set; taking training sample set data as input data of the DBN; extracting features of track circuit fault original data, training a binary tree type support vector machine multi-class classifier by adopting the extracted features of the track circuit fault original data, and sending a test sample set into the binary tree type support vector machine multi-class classifier for classification to obtain a diagnosis result. According to the invention, based on the DBM-SVM model, fault diagnosis is carried out on the ZPW-2000A uninsulated track circuit, the diagnosis performance is stable, the precision is high, the error is small, the work period is short, and the fault diagnosis efficiency of the uninsulated track circuit is improved.

The invention relates to a cross sliding type sublance system, which comprises a sublance system and a frame. The frame comprises a lifting frame and a cross sliding frame; the cross sliding frame comprises a cross sliding trolley frame body, a running wheel group and an upper side guide wheel device which are arranged on the bottom of the cross sliding trolley frame body, an upper orbit which supports the running wheel group and the upper side guide wheel device, and a lower orbit and a lower side guide wheel device, wherein, the upper orbit is arranged on a high level platform which is perpendicular to the lifting frame, and the lower orbit is arranged on a low level platform which is perpendicular to the lifting frame; the lower side guide wheel device is arranged on the lifting frame through a bracket. The cross sliding type sublance system has the advantages that the design is practical, the manufacture is easy, the installation is convenient, the running is stable and reliable, the working cycle is short, etc. The cross sliding type sublance system is especially suitable for the reconstruction project for adding the sublance system in old steelworks.

The invention discloses a collimating tool for the uneven settlement of a self-supporting iron tower, which solves the problems that a current tool is longer in work cycle, requires more operating personnel, and is higher in construction cost. The collimating tool is characterized by comprising an adjustable operation base, two lifting jacks, two zigzag support connecting tools and four thread supporting rods, wherein the adjustable operation base comprises an upper angle iron, an adjusting bolt, adjusting holes and a lower angle iron; each zigzag support connecting tool comprises a lifting baffle, reinforcement triangular irons, a junction plate, ear plates, thread supporting rod holes and a support plate. The collimating tool is simpler in structure, lighter, and easy to carry, is free of limitation of terrain where the pole and tower is, is shorter in work cycle, requires less operating personnel, is lower in construction cost, can achieve due collimating effect, reduces security risk and labor intensity, and improves the working performance.