136results about How to "Ensure transmission stability" patented technology

The invention discloses a method and an apparatus for establishing a wireless backhaul link and a communication system. The method comprises the steps that an access network device searches one or more signals for establishing the wireless backhaul link; the access network device selects a to-be-used signal from the searched one or more signals; and the access network device establishes the wireless backhaul link according to the selected to-be-used signal. According to the method and the apparatus disclosed by the invention, the technical problem of relatively complex deployment resulting from the use of wired connection in the backhaul link in the prior art is solved.

The invention discloses a linear moving device, which comprises a loading platform and a screw drive mechanism. The screw drive mechanism comprises a screw, a screw nut and a drive mechanism, two sides of the screw are respectively provided with a linear guide rail, a sliding block is arranged on the linear guide rails and is fixedly connected with the loading platform, an adjusting block and a guide block are arranged between the loading platform and the screw nut, the adjusting block is fixedly connected with the loading platform, the guide block is fixedly connected with the screw nut, the adjusting block is provided with at least one rectangular convex block protruding towards the guide block, the guide block is provided with at least one rectangular guide slot, the rectangular convex block extends into the rectangular guide slot, and the width of the rectangular guide slot is more than the width of the rectangular convex block in the direction vertical to extension of the screw. The linear moving device has the advantages that the accuracy of linear transmission can still be ensured when the screw is not parallel to the linear guide rails to certain degree.

The invention relates to a single-oscillating-arm leftward and rightward co-bending type numerical control pipe bending machine and belongs to the technical field of pipe processing. The numerical control pipe bending machine comprises a machine frame, a control unit, a feeding trolley, a machine head, a mold guide unit and a switching unit, wherein the feeding trolley, the machine head, the mold guide unit and the switching unit are installed on the machine frame and controlled by the control unit; the machine head comprises a clamping mold, a round mold, an oscillating arm and a pipe bending motor, the oscillating arm shares the same drive spindle with the round mold, and the pipe bending motor is used for driving the round mold and the oscillating arm to rotate to bend a pipe and to rotate at the leftward pipe bending position or the rightward pipe bending position in a switching mode; and the switching unit is controlled by the control unit to drive the machine head to move transversely or vertically perpendicular to the axial direction of the pipe to be bent relative to the machine frame so that the machine head can be driven to switch between the leftward pipe bending position and the rightward pipe bending position. By means of the single-oscillating-arm leftward and rightward co-bending type numerical control pipe bending machine, leftward and rightward co-bending can be achieved based on the single oscillating arm, the pipe bending quality can be effectively improved, and the numerical control pipe bending machine can be widely applied to the fields of air conditioners, aviation and the like.

The invention discloses an MATLAB based cycloid gear parameter optimization method. The method comprises the following steps: step1. obtaining number ZP of needle teeth and needle teeth central circle radius rp; step2. according to restricting conditions, obtaining an eccentric distance and a needle gear sleeve outer circle radius rrp; step3. determining tooth number range and maximum engagement force involving in engagement simultaneously at the moment when the cycloid gear transmits; and step4. when needle teeth contact stress reaches strength requirement and rotary arm bearing life meets the requirement, outputting the eccentric distance a and the needle gear sleeve outer circle radius rrp, otherwise, executing step 2 until the requirement is met. According to the cycloid gear parameter optimization method, cycloidal gear parameter optimization is completed by analyzing basic principles of cycloid pin gear transmission and a design method of the cycloid gear. In the optimization, main parameters affecting cycloid gear transmission carrying capacity, the eccentic distance and the needle tooth radius rrp, are used as design variables, cycloid pin gear engagement strength and rotary arm bearing life are to-be-solved targets, and certain constraints are met.

The invention discloses a seabed type static cone penetrating device and a control method thereof. The seabed type static cone penetrating device comprises a penetrating mechanism, a winding mechanism and a flexible tooth-shaped post, wherein the penetrating mechanism comprises an aligning tube and a gear transmission mechanism; the winding mechanism comprises a winch and a guide plate; the flexible tooth-shaped post comprises a steel cable and a plurality of tooth-shaped post sections which are in sliding sleeve on the steel cable and are connected in series; one end of the flexible tooth-shaped post is in winding connection with a winch; the other end of the flexible tooth-shaped post gets across a guide disc and then passes through the aligning tube; adjacent tooth-shaped post sections positioned in the aligning tube are in splicing connection; the two sides of each tooth-shaped post section are engaged with the gear transmission mechanism; the flexible tooth-shaped post has a straight state and a bent state, is convenient to operate, and is high in stability; the tooth-shaped post sections are connected in series automatically, and are not additionally connected, so that seabed static penetration under a deep-layer condition is conveniently realized; and through a dual-engagement structure that the gear transmission mechanism is engaged with the two sides of each tooth-shaped post section, collimation degree and pressure needed for penetrating are guaranteed.

The invention discloses a wool scouring device used for cloth material. The wool scouring device comprises a cloth-feeding device, a cleaning device, a traction padder and a cloth-falling device. The cleaning device comprises a cuboid cleaning water tank, left and right side walls of which are provided with cloth-feeding gaps. Upper and lower sides of each cloth-feeding gap are provided with middle rollers. Upper and lower layers of cloth guide rollers are arranged in the cleaning water tank. Cloth guide rollers at the upper layer and cloth guide rollers at the lower layer are arranged at intervals. Front and back side walls of the cleaning water tank are provided with multiple water sprayers capable of swinging up and down. The water sprayers are located in the middle between the upper and lower layers of cloth guide rollers. Water sprayers on the front wall of the cleaning water tank and water sprayers on the back wall of the cleaning water tank are arranged at intervals. A detachable filtering net is arranged in the cleaning water tank and disposed below the cloth-guide rollers. The bottom surface of the cleaning water tank is an oblique plane, the lowest position of which is provided with a water outlet. The water outlet is communicated with a water supply pipe of the water sprayers via a water pipe. The wool scouring device used for cloth material is high in cleaning efficiency and used for water circulation.

A shipborne expendable optical-fiber bathythermograph comprises an all optical fiber probe, transmission optical fibers and a deck unit, wherein the probe measures the seawater temperature through LPG (long period fiber gratings) and measures the seawater depth through FBG (fiber bragg gratings), and seawater temperature and depth profiles are measured independently at high sensitivity; the deck unit comprises a broadband light source, a dynamic fiber grating fast and high-precision demodulation module, an optical fiber isolator, a first optical fiber coupler, a second optical fiber coupler, an upper fiber shaft and a telescopic support mounted on the board of the stem of a working ship. The thermograph solves the problems of cross sensitivity and sensitization of a sensor, the sensitivity of temperature and depth measurement is improved, errors caused by enameled wire channels are overcome, the signal transmission rate and the stability are guaranteed, single light path cascade of FBG and LPG is realized, a light path structure is optimized, the spectral region is allocated reasonably, temperature and depth synchronous detection is realized, the thermograph is simple to manufacture, the probe is low in cost, and a new technical means is provided for detection of the seawater temperature and depth profiles.

The invention discloses a double supporting rollers-type double circular molds granulator, which comprises a first supporting roller, a first rotating shaft, a first circular mold, a casing, an impeller, an impeller shaft, a hopper, a support, a second circular mold, a second rotating shaft, a second supporting roller, a door cover, a material collecting trough, a first scraper, a second scraper, a first bearing sleeve, a first belt wheel, a residual material groove, a gear reducer, a main motor, a second belt wheel, a second bearing sleeve, a first synchronous belt, a third belt wheel, a first compaction wheel, a second compaction wheel, a fourth belt wheel, a second synchronous belt, and an impeller motor. The double circular molds granulator has the advantages that dismounting and replacing of the circular molds are convenient and fast, the supporting rollers support the circular molds, support rigidity of the circular molds can be greatly increased, the granulator can be used for extruding the difficultly-extruded materials, width of the circular molds can be increased greatly, granulation efficiency is greatly increased; the scraper is employed for cooperating the material collecting trough for collecting the material, the material collecting trough is arranged on the door cover, when the door cover is opened, a cutter on the scraper is dismounted so that the circular molds can be rapidly replaced.

The invention relates to a pneumatic winch capable of automatically tensioning and arranging ropes. The pneumatic winch comprises a rope arranging mechanism, a transmission mechanism and a steel wire rope tensioning mechanism, wherein the rope arranging mechanism comprises a guide rod, a screw rod, a rope arranging seat, a slider, a pressure spring, a spring pressing cover, a pull pin and a sliding sleeve; the transmission mechanism is connected with the screw rod; the steel wire rope tensioning mechanism is connected with the rope arranging mechanism. According to the pneumatic winch capable of automatically tensioning and arranging ropes disclosed by the invention, the steel wire rope is winched without disordering and loosening, and the steel wire rope is maintained at a tensioning state no matter when the rope is wound or unwound. The steel wire rope is guided by a rope arranging and clutch device to be uniformly wound along a roller without rope pressing and jumping, and the rope can also separated from the device; the power of the rope arranging mechanism is from the pneumatic winch, and the speed of the rope arranging mechanism is matched with the speed of the pneumatic winch, so that the transmission stability is ensured.

The invention discloses a cleaning device for electronic semiconductor machining. The cleaning device comprises a megasonic cleaning shell, wherein an elastic vibration plate which vibrates periodically is arranged at the bottom of the megasonic cleaning shell; the elastic vibration plate movably covers the bottom of the megasonic cleaning shell; a megasonic resonant cavity transducer is arranged on the outer side of the megasonic cleaning shell; the cleaning device further comprises a cleaning liquid storage device, an electromagnetic pulse vibrator, a cleaning pipeline assembly, a driving part and a vibration assembly, and periodic vibration is generated on the elastic vibration plate; the electromagnetic pulse vibrator and the megasonic resonant cavity transducer are matched to realize high-efficiency cleaning of an electronic semiconductor; and the semiconductor material is flushed more cleanly and cleaned more thoroughly, and the cleaning efficiency and effect are improved.

The invention discloses a semiconductor material cleaning device, which comprises: a cleaning box capable of hierarchically cleaning a semiconductor material in the height direction, a vibrating plateis arranged at the bottom of the cleaning box, and the vibrating plate is elastically arranged at the bottom of the cleaning box; a liquid storage tank which is used for storing cleaning liquid, wherein the cleaning liquid is pumped into the cleaning tank through a pump body, so that the semiconductor material is flushed by layers in a circumferential array manner; a circulating material stirringbarrel which is in a thin-plate cylindrical shape, the top and the bottom of the circulating material stirring barrel are open, wherein a plurality of material stirring rods are arranged on the circumferential inner side wall of the circulating material stirring barrel; cleaning pipeline assemblies which are distributed on the inner side wall of the cleaning box in an annular array mode; a cleaning roller assembly which is located at the bottom of the cleaning box and conducts rolling cleaning on the semiconductor material; a driving part which can simultaneously control the circulating material stirring barrel body and the cleaning roller assembly to synchronously rotate; and a vibration assembly which generates periodic vibration on the vibration plate, wherein overturning and positionreplacement of the semiconductor material are realized by matching with a material stirring rod, and therefore, the semiconductor material can be flushed more cleanly and cleaned more thoroughly, andthe cleaning efficiency and effect are improved.

The invention discloses a method for determining formation of a linear light spot in a multi-reflection air chamber. The method comprises the steps: setting a relative distance range of a first reflector and a second reflector, and constructing a relative distance array based on a preset distance interval; for each relative distance value in the relative distance array, setting light to be incident at a preset initial incident point coordinate and a preset initial incident angle, and setting the incident light to pass through the central symmetry axis of the two reflecting mirrors, so that a plurality of light spots formed on the reflecting mirrors form a linear light spot pattern, and determining the path of the light in the multi-reflection air chamber according to an optical model; selecting a path of which the reflection frequency is within a preset reflection frequency range and the light spot spacing is within a preset light spot spacing range in the linear light spot pattern asa first candidate path, and obtaining a corresponding first linear light spot pattern; and generating a candidate path set and a candidate linear spot pattern set. In addition, the invention also discloses a method for determining the test of various gases in the multi-reaction gas chamber and the multi-reaction gas chamber.

The invention, which belongs to the communication technology field, discloses a communication plugboard and a communication device, so that whether a connector is plugged firmly can be detected accurately and thus a transmission quality and stability of a high-speed signal are ensured. The communication plugboard comprises a plugboard connector and a firm plugging detection apparatus. Specifically, the plugboard connector being plugged with an opposite connector includes a plugboard signal pin and a plugboard detection pin; a sum of the length of the plugboard detection pin and a length of an opposite detection pin of the opposite connector is less than a sum of the length of the plugboard signal pin and a length of an opposite signal pin of the opposite connector. And the firm plugging detection apparatus that is connected with the plugboard detection pin is used for detecting whether the plugboard detection pin is contacted with the opposite detection pin.

The invention provides a modular structure chain type tool magazine and an automatic tool change control method; the modular structure chain type tool magazine compriess a machine frame, a main controller, a linear mechanism, an ATC automatic tool change mechanism, an ATC translation motor and a virtual main shaft, wherein the ATC automatic tool change mechanism comprises an ATC motor and a cutterarm driven by the ATC motor to change the tool; a plurality of sub-module tool magazines are arranged on the machine frame in the movement direction of the ATC automatic tool change mechanism on thelinear mechanism; an independent servo motor, a sensing mechanism and a unit controller are arranged in each sub-module tool magazine; the unit controllers in the sub-module tool magazines are connected with a main controller circuit through a bus interface and a field bus respectively; and each submodule tool magazine is independently controlled by the main controller. With reasonable structure design, the tool magazine provided by the invention can solve the problem of large capacity of the tool magazine effectively under the condition of ensuring transmission stability, precision and structural rigidity; and the tool change efficiency is effectively improved.

The invention relates to a suspension support speed reducing transmission device, which belongs to the technical field of a mechanical transmission device. The device comprises a motor, a primary speed reducer and a secondary speed reducer, wherein the motor is arranged on a motor support seat, the input end of the primary speed reducer is coupled with an output shaft of the motor, the input end of the secondary speed reducer is coupled with the output end of the primary speed reducer, the motor support seat is fixedly connected with a case of the secondary speed reducer, the motor support seat is sheathed with a support shaft through an eccentric shaft, the support shaft is parallel to the output shaft of the motor, a support seat block extends from one side of the case of the primary speed reducer, a slide block is arranged in the support seat block, a support hole is formed in the slide block, the slide block and the support seat block form a moving pair vertical to the direction of the output shaft of the motor, and the outer end of the support shaft is arranged in the support hole. The invention can conveniently regulate the assembly position of the motor and the primary speed reducer according to the requirement so that the motor and the primary speed reducer can be in an ideal transmission state. In addition, the structure brings great convenience for the dismounting and the installation of the primary speed reducer, and the repair and the maintenance are convenient.

A tripod type constant velocity joint comprises a housing having three track grooves which are defined at trisected positions of the housing along a circumferential direction and extend in a radial direction; a spider having three polyhedral trunnions which are projectedly formed at trisected positions of the spider along the circumferential direction to be respectively inserted into the track grooves and each of which has at least two polygonal surfaces; inner rollers a circumferential inner surface of each of which has a curved contour for surrounding the polyhedral trunnion; a plurality of needle rollers assembled to a circumferential outer surface of each inner roller; and outer rollers each formed to be rotated through the needle rollers, to be moved in an axial direction of the inner roller, and to be moved in an axial direction of the track groove along a guide surface of the housing.

The invention discloses a timing sequence calibration method, and a chip test machine. The method comprises the following steps: calibrating an internal timing sequence of the chip test machine; sequentially adjusting a timing sequence window corresponding to each data channel of a workpiece to be tested; and calculating a timing sequence calibration value according to the timing sequence window corresponding to each data channel, and configuring the timing sequence calibration value in each data channel. By adoption of the timing sequence calibration method disclosed by the embodiment of theinvention, the timing sequence calibration of an MIPI signal is achieved without adding any device, thereby ensuring the transmission rate and stability of the MIPI signal, and reducing the maintenance and use costs of the device.