56results about How to "Omit design" patented technology

The invention discloses an electric shear type lifting platform, which comprises an upper movable bearing platform, a lower base, a mechanical lifting mechanism and a power driving mechanism, wherein the mechanical lifting mechanism is provided with a plurality of shear fork components, the power driving mechanism is a screw horizontal track feed actuating mechanism and comprises two screws which are parallel to each other and correspondingly arranged side by side, a driven end of each screw is in rotating connection with the position at the bottom end of one side of the bottom shear forks through a bearing, threaded sections of the screws are movably connected with a parallel moving block with internal threads matched with the threaded sections, the parallel moving block is fixedly connected with the bottom end of the other side of the bottom shear forks, folding and unfolding of the bottom shear forks can be realized by the aid of the parallel moving block and horizontal track feed along the screws, and further the upper movable bearing platform is supported to ascend and descend. The power driving mechanism is controlled by means of motor drive, so that folding and unfolding of the shear forks are realized, the upper movable bearing platform is kept parallel to the lower base, and further the lifting platform is stable in operation, low in manufacture cost and wide in application.

The invention discloses an electric power steering pump for an electric automobile. The electric power steering pump comprises a motor and a pump body, wherein the motor and the pump body are mutually connected through a pump connecting body and sealed; an external spline is machined at the end part of the output shaft of the motor; the output shaft penetrates through the pump connecting body and is connected with an oil pump rotor of the pump body through the external spline, and further directly drives the oil pump rotor of the pump body to rotate. The electric power steering pump has the advantages that the motor and the pump body share one transmission shaft, the design of a motor end cover can be omitted, the design of a sealing system between the motor end cover and the output shaft can be correspondingly omitted, the cooling efficiency of the motor can be further enhanced through the design of a circulating oil way, the service life of equipment can be prolonged, and use and maintenance costs are saved.

The invention discloses an electing method for a side span overhang-middle span cable-stayed three-tower self-anchored type combination suspension bridge, which belongs to the erection field of the suspension bridge. In order to solve the problem of safety risk existing in the erection process of the existing side span overhang-middle span cable-stayed three-tower self-anchored type combination suspension bridge and in a temporary consolidation dismantling and horizontal force conversion process, the electing method comprises the following steps of: (1) forming a cable-stayed bridge of a middle tower and a girder suspended by a side tower; (2) closing the girder; (3) erecting a side tower cable lifting system; (4) dismantling a suspension section support; (5) adjusting a cable-stayed backstay, a suspension cable and a cable-stayed bridge; and (6) finishing the bridge. In the electing method, the construction working procedure of construction and dismantling of the temporary consolidation between the side tower and the girder is cancelled and the construction working procedure of ''side tower cable lifting system erection'' is carried out after all closure openings of are closed, thereby shortening the construction period, saving material consumption and cost of machinery one-shift and avoiding security caused by removing the temporary consolidation bearing strong horizontal force.

The invention relates to a press-snorting type heating cigarette smoking set which comprises a braking type heating device and a press type smoke jetting device. The braking type heating device heats cigarettes in a heat radiation mode. The press type smoke jetting device drives a relevant mechanism to compress smoke by pressing a piston support by a user and jets out compressed smoke from a smoke outlet for enjoying of a user. The complicated smoke channel design of a traditional electric heating cigarette smoking set is avoided, local cigarette overheating is avoided, and direct contact between the user mouth and a cigarette holder is also avoided.

A mold press plate comprises a press plate main body, a lower cushion block and an upper cushion block arranged on the lower cushion block, wherein the middle of the upper surface of the press plate main body is provided with a longitudinal groove, a longitudinal through hole is formed at the bottom of the groove, the upper cushion block and the lower cushion block are matched in a cambered surface mode, the upper cushion block and the lower cushion block are both located in the longitudinal groove and are placed on the bottom face of the longitudinal groove, meanwhile the middle of the upper cushion block and the middle of the lower cushion block are provided with an upper through hole and a lower through hole which correspond to the position of the through hole and allow a screw to penetrate. The mold press plate is characterized in that a base plate is arranged on the lower portion of one end of the press plate main body, and the upper end of the base plate is limited in the longitudinal through hole and can move forwards and backwards along the longitudinal through hole. The base plate can be regulated forwards and backwards, and can also be regulated upwards and downwards, so the regulation range is widened, height requirements for different workpiece molds can be met, clamping strength is high, and the utilization and regulation are both convenient; and the overall structure is simple, reasonable and practical.

The invention provides a board-level radio frequency signal testing system, method and device without a radio frequency testing base, which are used for testing radio frequency signals of a radio frequency circuit. The board-level radio frequency signal testing system device comprises a radio frequency test probe, a tuning module and a test instrument module, one end of the radio frequency test probe is connected with an antenna elastic sheet of a radio frequency circuit, and the other end is connected with the tuning module; the tuning module is connected with the test instrument module; thetuning module adjusts the matching impedance according to the return loss; the matching impedance is matched with the impedance of the radio frequency circuit; the radio frequency test probe is directly and electrically connected with the antenna elastic sheet in the radio frequency circuit; then, the tuning module is used for adjusting the matching impedance, and whether the matching impedance ismatched in place or not can be judged according to the return loss until the matching impedance is matched with the impedance in the radio frequency circuit, so that the purpose of directly testing aradio frequency signal through the antenna elastic sheet is achieved; the test result is rigorous and the structure is ingenious; and the design space and the production cost of a radio frequency test base in a radio frequency circuit are saved.

A permanent magnet synchronous motor three-vector model predictive torque control method based on voltage vector screening and optimization comprises: firstly, converting control over torque and stator flux linkage amplitude into control over a stator flux linkage vector, constructing a value function based on stator flux linkage vector errors, and therefore the design process of weight coefficients is omitted; secondly, dividing a voltage space vector complex plane into four quadrants according to polarities of a real part and an imaginary part of a stator flux linkage vector error by deriving a relationship between the stator flux linkage vector error and a reference voltage vector, so as to determine the quadrant where the reference voltage vector is located; selecting two groups of voltage vector combinations according to the selected quadrant, wherein each group of voltage vector combinations comprises two non-zero voltage vectors and a zero voltage vector; for each group of voltage vector combination, respectively calculating duty ratios of the three voltage vectors according to the torque error and the flux linkage error, and dividing one control period into three parts; andfinally, obtaining an optimal voltage vector combination by minimizing a value function.

The invention discloses a measuring device and method for the implantation site in dental implantation. The measuring device comprises a ruler I, a ruler II, a ruler III, a ruler IV, a ruler V and a ruler VI, wherein the ruler I is used for gap measurement and diagnosis and implant positioning when in loss of single premolar tooth; the ruler II is used for gap measurement and diagnosis and implantpositioning when in loss of single molar tooth; the ruler III is used for continuous implant positioning when in loss of continuous teeth; the ruler IV is used for gap measurement and diagnosis and implant positioning when in loss of continuous premolar teeth; the ruler V is used for gap measurement and diagnosis and implant positioning when in loss of continuous molar teeth; the ruler VI is usedfor gap measurement and diagnosis and implant positioning when in loss of continuous posterior teeth. The measuring device and method disclosed by the invention have the beneficial effects that by adoption of the measuring device provided by the invention, auxiliary positioning can be carried out on the conventional oral-cavity implantation surgery at the posterior-teeth area; the cost is low, the operation is simple, the use is convenient, the accuracy is high, the error is small, the ideal position of the implant can be more accurately and quickly positioned in the surgery.

The invention discloses a streetcar gear transmission device for a low-floor streetcar. The streetcar gear transmission device comprises an upper box body, a lower box body, a driving bearing seat assembly and a driven bearing seat assembly, wherein the upper box body is also provided with an oil inlet window, an oil collecting cavity, an oil discharging oil passage and a small oil window, the top of the upper box body is provided with a cover plate, the cover plate covers above a top opening of the oil collecting cavity, the driving gear seat assembly also comprises an oil baffle ring, a sealing ring, a small sealing cover, a first separation sleeve and a second separation sleeve, the driven bearing assembly also comprises a large sealing cover, a first oil seal, a second oil seal and a positioning sleeve, a driven gear is in interference connection onto a driven bearing seat, one end of the driven bearing seat is provided with a driving end surface fluted disc, a matched hole and a first positioning pin hole, the outer periphery of the driven bearing seat is provided with a first step and a second step, the other end of the driven bearing seat is provided with an operation hole and a first screw bolt hole, the matching hole and the operation hole are communicated through a center hole, and an upper end hanging element and a lower end hanging element are arranged on the upper box body. The streetcar gear transmission device has the advantages that the structure is simple and compact, the lubrication sealing effect is good, and the oil level can be conveniently observed.

The invention provides a transistor laser device and a method for manufacturing the same, and belongs to the field of semiconductor laser devices. The transistor laser device is of a multilayer structure and sequentially comprises a substrate, a lower collector electrode layer, a collector electrode layer, a base layer and an emission layer from bottom to top. The base layer at least comprises a base electrode layer and a quantum well layer. The transistor laser device comprises an upper portion and a lower portion. The upper portion is of a columnar structure, and a boundary line of the columnar structure and the lower portion is positioned in the lower collector electrode layer; a columnar hole is formed in the columnar structure, the base layer is arranged at the bottom of the columnar hole, an emitting electrode is arranged on the upper surface of the columnar structure, a base electrode is arranged at the bottom of the columnar hole, and a collector electrode is arranged on the upper surface of the lower portion of the transistor laser device. The transistor laser device and the method have the advantages that feedback does not need to be provided via optical gratings or cleavage planes when the transistor laser device works, closed annular waveguide circuits formed by the columnar structure of the transistor laser device and the columnar hole are used as resonant cavities, and accordingly laser light can be resonated.

The invention discloses a method, a control terminal and a system for controlling Bluetooth equipment to be networked, and the specific method for controlling the Bluetooth equipment to be networked by adopting the scheme comprises the following steps: firstly, Bluetooth broadcasting is carried out on the Bluetooth equipment needing to be networked, and the content of the Bluetooth broadcasting comprises a first data broadcasting head; the first data broadcasting head is used for identification of the Bluetooth equipment, and due to the fact that there are many Bluetooth broadcasts in the environment, the Bluetooth broadcasts needing to be connected can be scanned more quickly by identifying the specific Bluetooth equipment through the first data broadcasting head; the user selects the corresponding Bluetooth equipment to establish connection with the corresponding Bluetooth device according to the content of the first data broadcasting head, reads the searched WiFi list, selects the specified WiFi to be connected with the Bluetooth device according to the WiFi list, inputs the WiFi information of the corresponding WiFi, synchronizes the WiFi information to the Bluetooth equipmentthrough Bluetooth connection; the Bluetooth equipment performs WiFi connection according to the synchronized WiFi.

The invention discloses an electric-heating superheated steam boiler. The electric-heating superheated steam boiler comprises a lower header, a saturated steam electric heater header, an upper header, a separation header and a superheated steam electric heater header. The upper header and the lower header are connected through a communication pipe I and a communication pipe II, to form an integrated structure. The saturated steam electric heater header is arranged between the upper header and the lower header. The separation header is connected with the upper header. The superheated steam electric heater header is arranged above the upper header and connected with the separation header through an elbow pipe. Saturated steam electric heaters of various specifications are arranged in the saturated steam electric heater header. A superheated steam electric heater is arranged in the superheated steam electric heater header. According to the electric-heating superheated steam boiler, the amount of generated saturated steam is stable, the temperature of superheated steam is stable, the investment cost is low, pollution is small, and the noise is low.

The invention discloses an LED driving circuit and a driving controller and a control method thereof. The LED driving controller comprises a zero-crossing indication circuit which carries out inductive current zero-crossing detection and provides a zero-crossing indication signal, a peak value comparison circuit that is used for generating a peak value indication signal according to a comparison result of the sampling voltage representing the current flowing through the power tube and the first reference voltage, and a driving control circuit which is used for controlling the on and off of the power tube according to the zero-crossing indication signal and the peak indication signal; the zero-crossing indication circuit is used for detecting the inductive current to generate a zero-crossing detection signal and providing a prediction enable signal; and a pulse provided by the zero-crossing detection signal under the condition that the enable signal is predicted to be in the first state as an interference pulse is filtered so as to generate a zero-crossing indication signal. According to the LED driving circuit and the driving controller and the control method thereof, a filter capacitor at the output end of a rectifier bridge can be omitted, interference pulses in zero-cross detection signals can be eliminated, and the problem that inductive current is continuous in a critical conduction mode is solved.

The invention discloses a multi-channel parallel pretreatment device. The multi-channel parallel pretreatment device comprises a magnetic separation transfer device and a first driving device; the magnetic separation transfer device comprises a second mounting bracket fixedly provided with an injector cavity, a mounting plate is arranged at the top of the injector cavity, a plurality of piston rods are arranged on the mounting plate, and the piston rods are movably and hermetically connected with the injector cavity; a second driving device is further arranged on the second mounting bracket; a loading head is arranged on the injector cavity and is of a hollow structure; a magnetic bar is arranged at the free end of the piston rod, the second driving device can drive the magnetic bar on the piston rod to penetrate through the loading head, reciprocating motion of the loading head is achieved through the first driving device and the second driving device, uniform mixing of reaction liquid and resuspension of cleaning liquid can be completed, the structure is simple, reliability is high, and liquid splashing is avoided. Accurate pipetting of a sample or a reagent is achieved, the functions of pipetting, magnetic adsorption, transferring, uniform mixing, unloading and the like are integrated, and the automation degree of the product is greatly improved.

The invention relates to an earphone device which mainly comprises a shell, a wire coiling mechanism, a loudspeaker and a transmission wire, wherein the wire coiling mechanism is axially arranged in the shell and has a holding space to arrange the loudspeaker in the wire coiling mechanism, and the transmission wire is winded on the wire coiling mechanism, and the loudspeaker can be rotated with the wire coiling mechanism when a user pulls out or releases the transmission wire to rotate the wire coiling mechanism.