78results about How to "Exempt from installation" patented technology

The invention relates to a machine fish, wherein it is characterized in that: it comprises a fish head module sealed, left and right chest fin modules, at least two driving modules, and caudal fin; said fish head module has controller and main motor for floating the left and right chest fin modules whose main axles via movable sealing device are connected to the main motor; the left and right chest fin modules both have assist motors to drive the chest fins up and down; the axle of chest fin via the movable sealing device is connected to the assist motors; the driving module via the swing rod is connected; the first driving module via the head-tail connector is fixed on the back of fish head module; the caudal fin via the connector is connected to the back of driving module. The invention can be used in underwater detection, etc.

The invention relates to the device field of controlling the synchronous motor, to be specific, relates to a tracking method of a rotor position of a salient pole permanent magnet synchronous motor in a motion state. The tracking method is characterized in that a, comparison is carried out; b, input of a PWM inverter is carried out; c, current i alfa beta of an alfa beta axis can be acquired; d, a current signal i alfa beta comprising the rotor position information can be acquired; e, whether the polarity of the estimated rotor position is identical to the polarity of the actual position can be determined, when the polarities are opposite, the compensation is required; f, after the current i afla beta is transmitted to the phase-locked loop, the estimated rotor angular speed omega r and the estimated rotor position theta r can be acquired by combining with the polarity determining module. The tracking method has advantages of high accuracy, strong applicability, safety, and reliability.

It is an object to decrease an occupied space in a printed board to carry out space saving and to reduce the size of a unit without sacrificing the performance of a transformer and increasing a cost. A transformer 11 is constituted by a bobbin 13 having at least a primary winding 15 and a secondary winding 17 wound therearound and a core 21, and the side surface of the bobbin 13 is provided with a component holding section for holding high-voltage components such as a capacitor 31 and a diode 33 which constitute a voltage doubler rectifying circuit for rectifying a high voltage having a high frequency from the secondary winding 15.

The invention discloses a frequency voltage switching circuit, which comprises a frequency adaptation controller and a frequency voltage switching module. A charge pump output resistance end of the frequency voltage switching module is connected with an adjustable resistor; a frequency gear signal is input into the frequency adaptation controller; and the frequency adaptation controller adjusts the adjustable resistor. The adjustable resistor is a sliding contact type adjustable resistor; and the frequency adaptation controller comprises a frequency gear step switching module and a stepper. The frequency gear signal is input into the frequency gear step switching module and transformed into a step control signal to be output to the stepper through the frequency gear step switching module;and a step control end of the stepper is connected with the sliding contact of the adjustable resistor. The invention also discloses a multi-gear frequency voltage switching method. A frequency gear / step number pair table is established in the frequency adaptation controller. Therefore, when the frequency gear is changed, the frequency adaptation controller can drive the adjustable resistor to change so as to realize the frequency-voltage transformation in the same circuit by searching corresponding step number.

The invention relates to a WEB management-based wireless data card and an implementation method thereof. The Web management-based wireless data card comprises a service flow screening module, an embedded Web server module and a local database module, wherein the service flow screening module screens and differentiates the application layer service from a PC host to judge which service is the local access service; the embedded Web server module responds to a Web browser request from the PC host and processes inquiry operation and setting operation of a user; and the local database module maintains the local service content. The Web service flow from the PC host is screened by embedding a Web server into the data card; the functions which need to be implemented by management software on the PC host conventionally are finished by the embedded Web server; and thus the requirement of managing the data card equipment through a Web browser of the PC host is realized.

An air dryer includes a housing with an air inlet, an air outlet and a liquid drain outlet; and a membrane separator having surfaces extending between a first and second ends of the membrane. A first passage in the housing is connected to the air inlet and air outlet at it respective ends and extends between the first and second ends of the membrane separator along the surfaces of the membrane separator. A second passage in the housing is connected to the drain outlet and air outlet at it respective ends and extends between the first and second ends of the membrane along a surface of the membrane separator. A valve is connected between the second passage and the drain outlet for controlling the draining of the liquid and sweep air flow through the second passage. The dryer is to be inserted in a reservoir at its inlet or outlet. A coalescing filter may be provided in the housing in series with the membrane separator and the housing would include a second drain for the coalescing filter.

An improved high power special filter, system and method. In the system, an optical fiber is disposed inside a ferule channel structure, and the channel structure is aligned with a focusing lens system. The end of the fiber is at a distance D from the channel opening that faces the focusing lens system, and D is determined by the system's numeric aperture factor and the cladding thickness of the optical fiber.

The invention discloses an RFID (Radio Frequency Identification Device) technology-based displacement sensing positioning system and a positioning method thereof. The system comprises a plurality of positioning communication units, wherein each positioning communication unit is composed of two base stations and a certain length of leakage cable with two ends connected with the two base stations; the base stations on the two ends of the leakage cable send signals with time marks to a mobile station, and the mobile station in any position between the two base stations monitors and receives the signals sent by the two base stations, and the accurate position of the mobile station between the two base stations can be analyzed and calculated out according to the signal sending time of the two base stations and the signal arrival time, as well as the known speed and distance of the signal sending between the mobile station and the two base stations through the leakage cable, thereby completing the displacement sensing positioning communication. According to the invention, the displacement sensing positioning communication of the mobile station in a laneway is realized, and the installation and debugging of positioning card readers, substations and the like which are used in a traditional positioning communications system are avoided, thereby simplifying the system, reducing installation workload and maintenance workload in a later period, and improving the stability and performance of the system. Therefore, whole-journey continuous accurate positioning communication is realized in the system coverage.

In this application is described a method and a system for streaming multi channel digital isochronous data. The method is used for streaming multi channel digital isochronous data, e.g. audio data, in a standard wireless local area network transmission system where bandwidth is reserved for both contention-based traffic and contention free traffic and the audio data (10) formed by samples (9) is organized in audio frames (174) and sent to receivers (6) using multicasting, within consecutive beacon intervals (137). In accordance with the invention the contention free traffic (138) of the beacon interval (137) is adjusted to an optimum value, and the length of the beacon interval (137) is adjusted such that a required amount of audio data (9) can be sent to the receivers (6) with minimum system delay.

The invention discloses a special power supply device for direct current smelting. The special power supply device comprises an overall box body. The special power supply device is characterized in that the overall box body comprises a transformer and a rectifier, wherein the transformer and the rectifier are arranged in a communicated oil chamber respectively; a forced oil-circulated cooler capable of enabling an oil body to flow circularly is arranged at the outer side of the oil chamber; the transformer is connected with a current induction limiter; the current induction limiter is used for limiting the current magnitude of the transformer; and an output end connected with a direct current smelting furnace is also arranged at the side part of the overall box body.

The invention discloses a sound production device, and the sound production device comprises: a housing which is provided with two through ends, and comprises a first housing and a second housing which are distributed in the through direction of the housing and cooperate with each other; a vibrating diaphragm, wherein the vibrating diaphragm and the first shell are integrally formed; and a side concentrating flux plate, wherein the side concentrating flux plate and the second shell are integrally formed. According to the technical scheme, the reliability of connection between the side concentrating flux plate and the shell can be improved.

A system and method for reconciling a healthcare payment account includes receiving: (a) a first file that includes sorted and rebalanced explanation of benefits information from a healthcare payer, the first file generated by segregating comingled data for multiple healthcare providers or accounting systems; (b) a second file that includes payment information for a bank account of a healthcare provider; and, (c) a third file that includes accounting information from the healthcare provider; using reassociation and file splitting processes to match transactions of at least two files using rules based logic, and to calculate variances of transactions between at least two files; and, displaying at least one of variance via at least one GUI to facilitate reconciliation.

The invention relates to a displacement sensing positioning system on the basis of a radio frequency identification technology and a positioning method thereof. The system comprises a fixed station communicated with an upper computer; a first microprocessor MCU (Microprogrammed Control Unit) is arranged in the fixed station; the fixed station is connected with a group of coaxial radio frequency cables; each reference step-length coaxial radio frequency cable is provided with a positioning area; a shielding layer of each cable in each positioning area has two states, namely opening a leakage window or keeping shielding; a radio frequency communication device is arranged in a mobile station; and the mobile station is in radio frequency communication with the fixed station sequentially by the radio frequency communication device and the leakage windows of the shielding layers of the coaxial radio frequency cables. According to the invention, leakage states of one group of coaxial radio frequency cables in each positioning area are combined and coded into position codes of the position of the positioning area; a positioning function of a card reader can be totally replaced; the installation of the card reader is totally avoided; the system is simplified; the installation workload and the post maintenance workload are reduced; and the stability of the system is improved.

An electromagnetic wave absorptive film for absorbing electromagnetic waves by means of destructive interference is disclosed to include a compound layer, which has single-layer and / or double-layer wave-absorbing and / or wave reflecting grains embedded therein and a thickness equal to 1 / 4n times of the wavelength of the electromagnetic wave to be absorbed, and a reflective layer, which is covered on one side of the compound layer and has a refractive index greater than the compound layer.

A semiconductor wafer holder (12) and process eliminating the need for wafer mounting using sticky tape, UV exposure, and manual de-taping from sticky tape during processing and inspection. The present invention comprises a semiconductor holder having an opening (14) securely receiving a semiconductor wafer (16) about its edges in an interference fit. The holder securely holds the wafer in place during handling, and without the need for using sticky tape to hold the wafer backside to a wafer tray (30). The wafer holder is utilized as an insert that is concentric to the wafer tray, which tray includes a perforated film (32) having vacuum openings (34). Advantageously, sticky tape is only interposed between the wafer holder (12) and a perimiter of the wafer holder (30), which sticky tape is later removed using UV exposure.

A method and apparatus provide for remote control, monitoring and / or servicing of heat-treatment equipment via wireless communications networks. Specifically, the method and apparatus can be used in pre and post-weld heat-treatment applications for steel pipes in a variety of industries, including, but not limited to, power plants, chemical and petrochemical plants and refineries. Importantly, the embodiment generates and manages all the documentation necessary to input and verify the specified heat-treatment process. It will produce and deliver to the customer the reports and certificates required by the applicable quality control standards, requirements and regulatory authorities.

The invention discloses a rope-rod hybrid driving super-redundant robot. The rope-rod hybrid driving super-redundant robot comprises a base, a plurality of motors arranged on the base, a plurality ofrod system branched chains, a plurality of rope branched chains and a plurality of movable platforms; the plurality of movable platforms are sequentially connected in series to form an integrated structure through the rod system branched chains and are connected to the base; the plurality of movable platforms are sequentially connected with a wire winding wheel disc of the motors on the base through the rope branch chains. Compared with a traditional rigid branched-chain hyper-redundant robot, has a larger working space, and is higher in flexibility and smaller in quality, low in manufacturingcost, easy to install and the like, the sliding friction between the rope and the platform is eliminated, the rope-rod hybrid driving super-redundant robot can be used for a large-range attitude adjustment, position tracking, motion simulation and the like in a high-speed / heavy-load occasion.

The invention discloses a slide-moving mechanism which is mainly used for moving components in the machining process. The slide-moving mechanism has the advantages of being simple in structure, high in efficiency and accurate in positioning. The slide-moving mechanism comprises two parallel guide rails and a sliding platform connected with the guide rails in a sliding mode. A rack and a positioning device are arranged on the guide rails, the positioning device is right opposite to a machining table, and driving devices are arranged on the two sides of the sliding platform. When the slide-moving mechanism works, the sliding platform is pushed by the driving devices 5, so that the sliding platform for carrying the components to be machined is made to move towards the machining table and then is accurately positioned through the positioning device. The slide-moving mechanism overcomes the defect that in the prior art, multiple sliding platforms cannot be erected on one slide-moving mechanism, the steps of mounting and detaching the components in the continuous machining process are eliminated, and thus the whole component machining process is more smooth and efficient.

The invention provides an infrared focal plane analog front-end circuit. The circuit includes a control module circuit. The control module circuit includes a current mirror and a bias unit. The bias unit is used for controlling the initial current of the infrared focal plane analog front-end circuit. The initial current of the infrared focal plane analog front-end circuit will no longer be decided by resistance influenced by ambient temperature, and installation of a semiconductor cooler is not necessary.

The invention discloses a hinge assembly of a flat-top tower crane. The main body structure of the hinge assembly of the flat-top tower crane is a steel structure which is formed by welding a square steel tube, a seamless steel tube, a formed square steel tube and a steel plate in a combined manner, wherein the square steel tube is manufactured by squaring of angle steel; the steel structure is fastened with a revolving tower body, a balance arm and a crane boom by a pin roll and an opening pin in a connected manner, respectively; and a transitional segment is a key part of the hinge assembly. The hinge assembly of the flat-top tower crane has the advantages of being high in efficiency, low in cost, good in safety, good in reliability, less in material dosage, light in weight and convenient to install.

The invention relates to a controllable shock absorber, in particular for a vehicle suspension. The shock absorber comprises a cylinder pipe with a hydraulic fluid sealed therein, a piston (2), which can be moved axially inside the cylinder pipe along a cylinder pipe axis and which sub-divides the cylinder pipe into two working chambers, and a piston rod running parallel to the cylinder pipe axis and connected to the piston (2). The piston (2) has at least two fluid passages (12, 22), by means of which one working chamber is connected to the other working chamber, and a first valve arrangement is located at a first fluid passage (12) in order to damp the movement of the piston in a first actuation direction and a second valve arrangement is located at a second fluid passage (22) in order to damp the movement of the piston in a second actuation direction. In the piston (2), in addition to the fluid passages (12, 22) a bypass channel (7) having flow cross-sections of differing sizes for the two flow directions is provided, or multiple bypass channels (7) are provided, the sum of the flow cross-sections of said multiple channels differing in size for the two flow directions. By means of the single bypass channel (7) one fluid connection is formed between the two working chambers, bypassing the pre-chambers, or by means of the multiple bypass channels (7) multiple fluid connections are formed between the two working chambers, bypassing the pre-chambers.

The invention relates to a pressure filter device (1), especially a hydraulic filter device, comprising a filter housing (2) provided with a filter housing pot (3) and a filter housing cover (4) that can be connected in a pressure-tight manner to said pot, and at least one filter element (5) arranged in the filter housing (2). According to the invention, a vent line (6) fixed to the filter housing pot (3) connects a dirty-side gas collection region (7) located directly beneath the filter housing cover (4) to a (hydraulic liquid) tank (8), or a vent line (6) fixed to the filter element (5) and guided through an upper end disk (11) of same connects a dirty-side gas collection region (7) located directly beneath the filter housing cover (4) to a (hydraulic liquid) tank (8) via a clean side (13) of the filter element (5).

The invention provides a pump body assembly of a compressor. The pump body assembly comprises a crankshaft (1), a rotor (7), an air cylinder (4) and a slip sheet (8), and further comprises a grooved wheel structure (4) which is arranged at the lower end of the crankshaft (1) and rotates with the crankshaft (1), wherein the position, corresponding to the slip sheet (8), on the grooved wheel structure (4) is provided with a guide slot (62); and a guide rod (81), which is inserted into the guide slot (62) and driven by the guide slot (62) for enabling the slip sheet (8) to be in reciprocating motion in the air cylinder (4), is arranged on the slip sheet (8). By virtue of the pump body assembly of the compressor provided by the invention, a novel pump body assembly of the compressor is provided, so that mounting of an original spring is effectively cancelled, and therefore, the occurrence of refrigerating capacity decline of the compressor due to a blow-by phenomenon between a compression cavity and a gas absorption cavity when the compressor slip sheet and a roller are not tightly fitted because of spring dropping is effectively avoided.

The invention discloses a train emergency parking braking and bogie monitoring control circuit wiring practical training device. A micro-breaking switch and a key simulation switch are arranged on a practical training plate; a green pantograph-ascending simulation button, a red pantograph-descending simulation button and a pantograph indicator lamp can simulate control operation of a pantograph ofa train; a main circuit breaker closing green simulation button, a main circuit breaker opening red simulation button and a high-speed circuit breaker simulation indicator lamp are arranged, and thuscontrol operation of a high-speed circuit breaker can be simulated; and a three-position rotating simulation switch, a four-position rotating simulation switch and a braking indicator lamp are arranged, and thus traction braking of the train can be simulated. The train emergency parking braking and bogie monitoring control circuit wiring practical training device is further provided with a plurality of wiring terminal rows, students can detect whether a circuit has a fault or not by detecting the wiring terminal rows, and simulative maintenance and troubleshooting are conducted; and the students can master basic operation of train traction and braking control and basic operation of the pantograph and the high-speed circuit breaker, and the skills such as mounting, wiring, operating and fault analyzing and eliminating of a traction and braking control system are mastered.

The invention provides electronic equipment. The electronic equipment comprises a low-frequency processing module, a high-frequency processing module, a coil and at least one capacitor, wherein the low-frequency processing module is electrically connected with two ends of the coil; the high-frequency processing module is electrically connected with the two ends of the coil; and each capacitor in the at least one capacitor is connected in parallel with the coil. The invention provides electronic equipment which can be applied to the field of wireless communication, cellular network signals sent by network equipment can be transmitted from outdoors to indoors in a wireless mode, a PoE network cable does not need to pass through a window or a wall, professional engineering installation and punching are omitted, and user experience can be greatly improved.

The invention discloses an assembly type partition wall with a self-locking function and a mounting method thereof. The assembly type partition wall with the self-locking function comprises a plurality of batten partition walls arranged side by side and mounting keels used for fixing the batten partition walls to a top beam / ground, and each batten partition wall comprises a batten body; one side of each batten body is provided with a rabbet, and the other side of each batten body is provided with an insertion opening matched with the corresponding rabbet; the rabbet of each batten partition wall is inserted into the insertion opening of the batten partition wall adjacent to the rabbet; and a self-locking structure is arranged at each rabbet. According to the assembly type partition wall with the self-locking function and the mounting method thereof, the batten partition walls are convenient to mount, the mounting problem caused by the size error of the batten partition walls is eliminated, the leakproofness between the batten partition walls is enhanced, and the sound insulation effect is guaranteed.

A rapid conveying device for building materials comprises a hole body and a plurality of rails arranged at the bottom of the hole body, a plate trailer for going in and out of the hole body is arranged on the rails, the plate trailer is composed of a comb plate and a plurality of rows of moving wheels at the bottom of the comb plate, a plurality of protruding blocks are installed at the bottom of the comb plate, and the front face and the rear face of each protruding block are connected with one end of a steel cable. The other ends of the two steel cables connected with each protruding block are connected with the corresponding wire stranding wheels, the wire stranding wheels are connected with a power device, a supporting plate is movably installed on the top of the comb plate, switch valves are arranged on the first pipeline, the second pipeline and the third pipeline, wedge-shaped blocks are arranged at the movable ends of the fourth oil cylinders, and the wedge-shaped blocks face the directions of the adjacent rails. A second strip-shaped plate is installed at the top of the second shear fork rod, one-way swing pieces are arranged on the two sides of the moving wheel correspondingly, and the one-way swing pieces can be in sliding contact fit with the wedge-shaped blocks. The conveying device is used for conveying building materials such as fired bricks, at least half of loading and unloading work can be omitted, and the working efficiency is doubled.

The invention discloses an alternative biochemical pond which comprises a middle pond, a side pond I, a side pond II and an anaerobic pond, wherein, the side pond I, the middle pond and the side pond II are symmetrically provided with two sets of water collecting and distributing device which comprises a central water collecting and distributing drum, a stabilizing feed well and a water collecting and distributing pipe. A sewage treatment method comprises the following steps that: S1, the side pond I carries out anoxic or aerobic treatment, the middle pond carries out aerobic treatment, and the side pond II carries out vertical flow sedimentation; and S2, the side pond II carries out anoxic or aerobic treatment, the middle pond carries out aerobic treatment, and the side pond I carries out vertical flow sedimentation. A sewage treatment system comprises the alternative biochemical pond and further comprises a grating drain, a sand basin, a sludge dehydration device and a contact disinfection pool. According to the invention, the phenomena of appearance of a dead zone and instable discharging of water in a biochemical pond are avoided, water conditions are improved, energy consumption in sewage treatment and maintenance cost for a sewage treatment plant are reduced, a utilization rate of capacity of the biochemical pond is improved, and cost for sewage treatment is reduced.