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52results about How to "Meet length requirements" patented technology
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Extension structure of pipeline laying drilling machine
ActiveCN112855202AMeet length requirementsIncrease flexibilityPipe laying and repairDerricks/mastsStructural engineeringMechanical engineering
The invention discloses an extension structure of a pipeline laying drilling machine. The extension structure comprises a mounting bottom plate, wherein a fixed support is arranged on the mounting bottom plate; a pipe pushing telescopic piece is arranged on the fixed support; the pipe pushing telescopic piece is connected with a pipe holding device; the pipe pushing telescopic piece drives the pipe holding device to advance and retreat along the mounting bottom plate; the mounting bottom plate comprises a fixed plate and a movable plate which are in sliding fit with each other; the movable plate slides linearly along the fixed plate, and the sliding direction of the movable plate is consistent with the telescopic direction of the pipe pushing telescopic piece; the movable plate retreats to the fixed plate to form a storage state, and extends out of the fixed plate to form a working state; the fixed support is arranged on the fixed plate; and the pipe holding device is positioned on the movable plate. The extension structure has the remarkable effects that a base for the pipe holding device to walk is arranged in a sliding fit way in a segmented way, so that a short storage state for transportation and transfer can be formed, and the flexibility and the passing ability during transfer and transportation are enhanced; and a long working state for pipe pushing can be formed, so that stable support is provided for the movement of the pipe holding device.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Distributed video transcoding method applicable to frame rate up-conversion
ActiveCN109348309AMeet length requirementsSharding operations are losslessSelective content distributionComputer graphics (images)Transcoding
The invention provides a distributed video transcoding method applicable to frame rate up-conversion. Frame information of an input video is read before the video is subjected to transcoding, and available cutting points are determined. According to the frame rate of the input video, the frame rate of an output video, and the length of an image group, the unit length of a fragment is computed, andthen the length of the fragment except redundancy is computed, and according to the distribution of the cutting points of the input video, a cutting scheme with redundancy is determined. After the video is fragmented according to the cutting scheme, the video fragment is decoded and processed in a distributed manner according to an output parameter, and meanwhile, the quantity of redundant videoframes needing to be cut off at the start and end positions of the fragment is computed. The front redundancy and back redundancy of a video stream after processing are cut off according to a computing result, coding is performed and the video fragments are spliced into the complete video code stream according to a time sequence, and then the complete video code stream is multiplexed and packagedwith an audio stream. According to the method provided by the invention, the redundancy is introduced to solve the video quality loss when fragmenting is performed during distributed video transcoding, and meanwhile the distributed frame rate up-conversion transcoding of the image group with the fixed size is achieved.
Owner:SHANGHAI JIAO TONG UNIV
Medical material for treating uterine prolapse
The invention discloses a medical material for treating uterine prolapse. The medical material is characterized in that an anchor net is arranged to be a strip-like sheet, wherein clamping fins raised and extending from the two side edges are arranged at the bottom of the anchor net; cutting separation lines are arranged on an upper section of the anchor net on a body of the anchor net; when the anchor net is transversely sheared at the upper ends of the cutting separation lines, the anchor net at the positions of the cutting separation lines on a lower section can be separated into net pieces; a lead fixing hole and a bottom fixing hole are formed at an interval along the length direction of the anchor net in the lower section of the anchor net; the line end of a suspending line can sequentially penetrate through the bottom fixing hole and the lead fixing hole and form a contracted and fixed net knot around the lead fixing hole surrounding the anchor net. According to the medical material, the anchor net can be ensured to be accurately placed, the net pieces are conformally and loosely rooted to the abdominal wall to ensure and improve the anchor effect of the anchor net in the abdominal wall, and the middle part of the suspending line is accurate in positioning.
Owner:凌安东
Gun-barrel-length-adjustable grease gun for car overhaul
InactiveCN107514535AMeet length requirementsStructural scienceManual lubricationEngineeringGun barrel
The invention relates to the technical field of car overhaul, in particular to a gun-barrel-length-adjustable grease gun for car overhaul. The grease gun comprises a gun head, a grease cylinder and a pull rod; the gun head is in sealing connection with the grease cylinder through a grease inlet sealing cover; a plunger is fixedly mounted on the upper end face of the gun head; a connecting piece is fixedly arranged on the outer end face of the gun head, and a connecting rod is hinged to the outer end of the connecting piece; a grease outlet of the gun head is in sealing connection with a grease outlet pipe, and a grease outlet valve is fixedly mounted on the outer end face of the grease outlet pipe; a telescopic pipe is mounted on the inner end face of the grease cylinder, and a grease storing cavity is formed in the telescopic pipe; a sleeve is slidably connected to the outer end face of the grease cylinder, and the outer end face of the sleeve is in sealing connection with a sealing plug; the pull rod is slidably connected into the sealing plug; one end of the pull rod is fixedly connected with a leather cup, and the other end of the pull rod is fixedly connected with a handle; a spring is slidably connected to the outer end face of the pull rod; and a graduation ruler is fixedly mounted on the outer end face of the sleeve. The gun-barrel-length-adjustable grease gun for car overhaul is scientific in structure, reasonable in design, convenient to use and high in practicability.
Owner:合肥鑫诚轿车技术服务有限公司
A kind of grease gun for automobile overhaul with adjustable gun barrel length
InactiveCN107514535BMeet length requirementsStructural scienceManual lubricationEngineeringGun barrel
Owner:合肥鑫诚轿车技术服务有限公司
Greening isolation belt construction method based on constructional engineering
ActiveCN113261446AGuaranteed Position AdjustmentAvoid planting width adjustmentsSewerage structuresGeneral water supply conservationEnvironmental resource managementWater storage tank
The invention discloses a greening isolation belt construction method based on constructional engineering. The greening isolation belt construction method specifically comprises the following steps: installing a water storage tank, respectively installing isolation water collecting devices on two sides of a main road, connecting an isolation water collecting seat with a water inlet of the water storage tank by adopting a water collecting pipe, installing a filtering and impurity removing device at the upper end of the water collecting pipe, installing greening isolation side plates, one side of a water supply pipe communicates with a water spraying head through a water conveying pipeline on the greening isolation side plates, the other side of the water supply pipe communicates with a water outlet of the water storage tank, matching a width limiting supporting plate with an inserting hole in a filtering plate to fix the distance between the two greening isolation side plates, and filling the space between the two greening isolation plates with soil. The greening isolation belt construction method particularly relates to a greening isolation belt, through installation and structural design of a greening isolation device and the isolation water collection devices, rainwater in a greening belt is collected and filtered, the planting width of the greening isolation belt is adjusted, the adaptability of the greening isolation belt is improved, and the protection on the plants is improved.
Owner:广东韩江工程总承包有限公司
Straw cleaning and harvesting device with three cutter shafts
PendingCN112956328ARealize cutting and crushingClean thoroughlyMowersHeadersAgricultural scienceAgricultural engineering
The invention relates to a straw cleaning and harvesting device with three cutter shafts and belongs to the technical field of agriculture and husbandry machinery. The straw cleaning and harvesting device with three cutter shafts is mainly applied to different types of straws and can be used for cleaning and harvesting standing or laying straws. According to the design, straw is smashed and rubbed mainly through a front cutter shaft, a middle flail cutter shaft, a rear auger, an adjustable fixed cutter and a fixed cutter welding part, the smashed straw is cleaned through fan blades and feeding cylinders on two sides, such that a straw smashing effect and a straw rubbing effect are better, and forage is cleaner.
Owner:HUHHOT BRANCH OF CHINESE ACAD OF AGRI MECHANIZATION SCI
Multifunctional earphone
InactiveCN103379398AMeet length requirementsAvoid tearingEarpiece/earphone attachmentsTransducers for subaqueous useTear resistanceHeadphones
The invention discloses a multifunctional earphone, comprising a connecting line, earphones and speaker grills; the tail of the connecting line is provided with an extending line; the surfaces of the earphones are uniformly coated with waterproof materials; a speaker grill is provided at a speaker mouth; the periphery of the speaker grill is adhered to a housing of an earphone through organic glue; the connecting interface between the connecting line and the earphones is provided with a tearing resistance sleeve. The multifunctional earphone can meet requirements for earphone line length by different players through the extending line; the tearing resistance sleeve can effectively prevent earphone lines from being torn and protect the earphone lines; meanwhile, the multifunctional earphone is waterproof, thus can be used for swimming, diving, etc.
Owner:徐秋平
Grass trimmer
The invention discloses a grass trimmer according to which the problem that a connecting rod is large in occupied space and unfavorable for transportation and packaging is solved. According to the technical scheme for solving the problem, the grass trimmer mainly comprises a machine body, a connecting rod and a handle. The machine body and the handle are connected with the two ends of the connecting rod respectively, and the connecting rod comprises a first connecting pipe, a second connecting pipe and a pipe sleeve. The end of the first connecting pipe is arranged at one end of the pipe sleeve in a sleeved mode, the pipe sleeve is in clamped connection with the first connecting pipe, and the other end of the pipe sleeve extends into the second connecting pipe and is in threaded connection with the second connecting pipe. The connecting rod not only facilitates users' dismantling and installation, but also enables the joint of the first connecting pipe and the second connecting pipe to be good in strength and rigidity, and relative vibration between the first connecting pipe and the second connecting pipe is avoided.
Owner:ZHEJIANG YAT ELECTRICAL APPLIANCE CO LTD
Multi-functional walking stick
InactiveCN106963060AMeet length requirementsMeet entertainment needsWalking sticksMusic playerEngineering
The invention relates to the technical field of walking sticks and specifically relates to a multi-functional walking stick which comprises a supporting frame, a connecting rod, an electric telescopic rod and a supporting foot, wherein the supporting frame is connected to the electric telescopic rod by the connecting rod, and a free tail end of the electric telescopic rod is connected to the supporting foot; the connecting rod is hollow, a radio device, a music player, a GPS positioning device, a phone communicating device, a micro processor and a storage battery are disposed at intervals inside the connecting rod, and a loudspeaker, a microphone and a lamp head are disposed on the outer side wall of the connecting rod; and an oxter supporting part and a holding handle are disposed on the supporting frame, the holding handle is located between the oxter supporting part and the connecting rod, and a controller is disposed on the holding handle. The multi-functional walking stick provided by the invention has a simple structure, diversified functions and high practicability and is suitable for promotion in the field.
Owner:易以代
Adjustable packaging tape cutting machine
The invention discloses an adjustable packaging tape cutting machine, and relates to the field of packaging equipment. The adjustable packaging tape cutting machine comprises a workbench, the two sides of the workbench are each provided with a support rod in a vertically upward mode, an installing plate is arranged at the upper ends of the support rods, and an air cylinder is arranged on the installing plate; a movable rod is arranged on the workbench, a piston rod of the air cylinder is connected with the movable rod, the side wall of each support rod is provided with a sliding groove, the two ends of the movable rod are arranged in the sliding grooves respectively, the side wall of the movable rod is provided with a plurality of positioning holes and tool bit fixing handles, the tool bit fixing handles and the positioning holes are connected through bolts, and a cutting knife is arranged at the lower end of each tool bit fixing handle; the workbench is provided with a cutting base plate, the cutting base plate is arranged under the cutting knives, a packaging tape is arranged on the cutting base plate, the side wall of the lower end of each support rod is provided with a fixing device, and the fixing devices make contact with the packaging tape. According to the design, the structure is simple and reasonable, multiple segments can be cut at a time, the length of each cut segment can be adjusted according to different products, the cutting efficiency is high, and the cut end openings are flush.
Owner:SHANGHAI XUNXI INFORMATION TECH CO LTD
Telescopic pipe
InactiveCN108180327ASmall sizeOvercoming elastic elongationFlexible pipesArchitectural engineeringWater pressure
The invention discloses a telescopic pipe. The telescopic pipe comprises an inner pipe and an outer pipe which is connected to the exterior of inner pipe in a sleeving mode, and is characterized in that the inner pipe is provided with an elongated allowance in the axial and / or radial direction of the inner pipe, and the allowance can be released when the inner pipe is filled with water and regenerated after the water filling state is eliminated; the outer pipe is used for the receiving of the inner pipe in the condition that the allowance of the inner pipe is in a non-released state, and for the forced expansion when the allowance of the inner pipe is released, and the expansion includes the elongation of the axial and / or radial direction of the outer pipe and is reversible or partially reversible. The telescopic pipe is provided with the inner pipe and the outer pipe, the inner pipe can be lengthened in the axial direction, and the outer pipe can be stretched by elastic deformation inthe axial direction; and through the coordination of the outer pipe and the inner pipe, a smaller size can be achieved due to the existence of external pipe elastic force when the telescopic pipe isnot used, and when the telescopic pipe is in use, the elastic elongation of the outer pipe can be overcome under the action of water pressure to meet length requirements for corresponding use.
Owner:SUZHOU NINGLIN PHOTOELECTRIC SCI & TECHCO
A handheld portable bionic picking device
The invention discloses a hand-held portable bionic picking device, which is an auxiliary artificial portable fruit picking device, comprising a picking chuck, a multi-stage adjustable telescopic rod, and a stepless transmission handle, wherein the picking mechanical chuck is suitable for picking small fruits , such as cherries, jujubes, oranges, etc.; the length of the rod is fixed by metal shrapnel after the extension or contraction of the telescopic rod; the steel wire rope of the stepless transmission handle, the closed terminal, the handle and the trigger; the present invention fixes the fruit through the clamp on the picking chuck At the same time, the blade on the chuck is used to cut the fruit handle of the fruit, which saves manpower, is easy to pick, and avoids the same fruit being affected by the pulling effect of the external force. The extension and contraction of the rod part of the multi-stage adjustment telescopic rod Determined by the button of the rope receiving device on the handle, the length of the steel wire is fixed after the button is released, which can realize the telescopic function within a certain length range and can be adjusted freely, while the stepless transmission handle realizes the effect of transmitting mechanical force.
Owner:WUHAN UNIV OF SCI & TECH
Intelligent multi-functional walking stick
InactiveCN109924627AMeet length requirementsMeet entertainment needsWalking sticksIntelligent lightingEngineering
The invention relates to the technical field of walking sticks, in particular to an intelligent multi-functional walking stick. The intelligent multi-functional walking stick comprises a supporting frame, a connecting rod, an electric telescopic rod and a supporting foot; the supporting frame is connected with the electric telescopic rod through the connecting rod, and the free tail end of the electric telescopic rod is connected with the supporting foot; the connecting rod is hollow, the inner portion of the connecting rod is provided with a sound collecting device, a music playing device, aGPS positioning device, a communication device, a microprocessor and a storage battery at intervals, and the outer side wall of the connecting rod is provided with a horn, a microphone and a lamp cap;the supporting frame is provided with an oxter supporting part and a grip, wherein the grip is located between the oxter supporting part and the connecting rod, and the grip is provided with a controller. The multi-functional walking stick has a simple structure, diverse functions and high practicability, and is suitable for being popularized in the field.
Owner:孙玮锋
Novel settlement type wire hanging ladder
The invention provides a novel settlement type wire hanging ladder. The novel settlement type wire hanging ladder comprises a suspension ladder body, limiting joints, a self-locking wire hanging headand a hanging head connecting rack, wherein the limiting joints are movably connected to the lower end of the hanging ladder body; the self-locking wire hanging head is hung to and matched with a wire; the hanging head connecting rack enables the self-locking wire hanging head to be movably connected to the lower end of the limiting joint; the self-locking wire hanging head comprises a transverseconnecting seat, a first extending part which vertically downward extends along one side end of the transverse connecting seat and a second extending part which vertically downward extends along the other side end of the transverse connecting seat; the tail end of the first extending part is inward concaved to form an arc shape; the tail end of the second extending part is bent to form a barb; andthe barb is hung to and matched with the wire. The novel settlement type wire hanging ladder disclosed by the invention has the advantages of convenience in operation, specified use, safety and reliability; the self-locking wire hanging head as the wire is connected with a stress buckle; and the hanging head connecting rack is used as an angular transformation structure, is matched with the limiting joint and is connected with the hanging ladder body so as to provide a safe and reliable channel for workers to carry out work at wires.
Owner:CHUZHOU POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CORP +1
A flange head and axle housing body assembly spot welding fixture
ActiveCN107030437BMeet length requirementsIncrease productivityWelding/cutting auxillary devicesAuxillary welding devicesEngineeringFlange
Owner:JIANGXI JIANGLING CHASSIS CO LTD
Diffuse reflection LED line lamp
PendingCN108591866AMeet length requirementsHigh light efficiencyLighting support devicesElectric lightingEngineeringDiffuse reflection
The invention discloses a diffuse reflection LED line lamp. The diffuse reflection LED line lamp comprises a first line lamp body, a second line lamp body and a power connector. The first line lamp body and the second line lamp body each comprise a first end cover, a second end cover, a base plate, an outer shell, a reflecting piece, an LED lamp strip, a power source, a power source input line, apower source output line, a first input socket and a second input socket. One end of the power connector is connected with the other end of a second input socket of the first line lamp body, and the other end of the power connector is connected with the other end of a first input socket of the second line lamp body. In this way, the splicing mode of the diffuse reflection LED line lamp is convenient to implement; the length requirement for the diffuse reflection LED line lamp can be met; meanwhile, mirror surface reflection, onto a metal outer shell, of light rays can be avoided; and the lighting effect of the diffuse reflection LED line lamp is improved.
Owner:GUANGZHOU KERIDA OPTOELECTRONIC TECH CO LTD
Expandable connector
InactiveCN106020375ARealize one to twoEnable connectivityDigital processing power distributionEngineeringElectronic component
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD
Shore power cable drum control method and system and electronic equipment
PendingCN114660986AMeet length requirementsAvoid tight situationsArrangements using take-up reel/drumProgramme control in sequence/logic controllersPower cableControl system
The embodiment of the invention provides a shore power cable drum control method, a shore power cable drum control system and electronic equipment, which can realize timely and accurate take-up and pay-off control. The method comprises the steps that the water level of a wharf boat connected with a cable drum is monitored in real time through a water level monitor, and real-time water level information is obtained; a tension sensor is used for monitoring the tension borne by the cable paid off by the cable drum in real time, and real-time stress information is obtained; and according to the real-time water level information and the real-time stress information, carrying out take-up and pay-off control on the cable drum. The system comprises a water level information acquisition module, a stress information acquisition module and a take-up and pay-off control module. The electronic equipment comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, and the shore power cable drum control method is realized when the processor executes the program.
Owner:XJ POWER CO LTD +2
Multifunctional armrest and stroller
PendingCN107117201ASimple structureEasy to useCarriage/perambulator accessoriesCarriage/perambulator with multiple axesHandrailEngineering
The invention discloses a multifunctional armrest comprising an armrest rod and a supporting rod. The armrest rod is located on the top of the supporting rod. The multifunctional armrest is characterized by further comprising a mounting seat and a gear adjusting device; the bottom of the supporting rod is in hinged connection with the mounting seat through the gear adjusting device; and the gear adjusting device is used for adjusting the relative rotating position of the supporting rod and the mounting seat. A stroller comprises a frame body, wheels and a cushion and is characterized by further comprising the multifunctional armrest.
Owner:黄兵修
Cable winding device for electric power maintenance
InactiveCN111186723APlay a role in groomingEasy to fixFilament handlingWinding machineControl theory
The invention discloses a cable winding device for electric power maintenance. A winding mechanism, a drive mechanism and a wire collecting mechanism are included. The winding mechanism is connected with the drive mechanism. A power shaft is arranged at the middle portion of a winding ring. The winding ring and the power shaft are fixedly connected through connecting rods. Through the arrangementof the winding ring, the cable dredging function is achieved. The connecting rod combined manner is a triangular combination, stability of the winding ring is improved, and the compression deformationphenomenon caused by a too heavy cable is avoided. The cable is fixed to a cable head fixing clamp, a runner back plate fixes the winding cable, and cable loosening is avoided. The runner back plateis provided with knotting holes, a bundling rope penetrates through the knotting holes, cable bundle-by-bundle tidying is convenient, and time is saved. When a runner starts to rotate, the cable is twisted on the runner back plate. The device is high in stability, time and labor are saved, the winding meters can be freely set, and the workload of workers is reduced.
Owner:新沂市高新科技产业园运营管理有限公司
A bottom door system with overload protection
ActiveCN112205187BAchieve supporting powerMeet length requirementsCuttersForeign matterStructural engineering
The invention discloses a bottom door system with overload protection. A plurality of strip-shaped knife edges are set through, and a hydraulic buffer is provided on the top surface of the cavity on the left and right sides. The present invention cooperates with the same central shaft by setting fourteen chopping knives to ensure that the fourteen chopping knives can be raised or lowered at the same time, so as to meet the user's demand for the length of straw and the matching power of the chopping knives. The bottom knife wheel cooperates with the bottom knife tension spring to recover the shredding knife after being hit by foreign objects, and the bottom knife cylinder between the bottom door welding and the connecting rod welding uses the principle of lever to amplify the hydraulic pressure to overcome the bottom The elastic force of the knife extension spring realizes the automatic recovery of the chopping knife after being hit by foreign objects, effectively provides protection for the chopping knife, avoids major damage to the chopping knife, and prolongs the service life of the chopping knife.
Owner:哈尔滨华惠农业机械制造有限公司
Bathtub drainer
The invention discloses a bathtub drainer. The bathtub drainer comprises an overflow device and a drainage device, wherein the overflow device and the drainage device communicate with each other and are installed at an overflow opening and a drainage opening of a bathtub respectively, the overflow device is provided with a switch piece and a key assembly, one side of the switch piece is rotatablymounted at the overflow opening, and the key assembly is mounted on the switch piece or the overflow opening to lock or unlock the switch piece; and the bathtub drainer is further comprises a transmission assembly, wherein one end of the transmission assembly is in transmission connection with the drainage device, and the other end of the transmission assembly is rotationally connected with the switch piece, so that when the drainage device closes the drainage opening and the switch piece is unlocked, the switch piece is driven to act to open the overflow opening, or when the switch piece is locked, the drainage device is driven to act to open the drainage opening. According to the bathtub drainer, large-flow overflow can be realized, occupied volume is small, the space between a cylinderbody and a skirt part is reduced, and disassembling and assembling are convenient.
Owner:JOMOO KITCHEN & BATHROOM
An adjustable component pin bending and shearing integrated device
ActiveCN111136196BRealize integrated processing operationImprove the efficiency of bending and shearing operationsIntegrated processingRotating disc
Owner:临沂市汇川电子科技有限公司
A pipe lifting platform for subsea pipeline maintenance
ActiveCN105129641BMeet length requirementsImprove the forcePipe laying and repairCranesMarine engineeringFixed frame
The invention relates to a pipe lifting platform for submarine pipeline repairing. The pipe lifting platform is characterized by comprising a platform deck, a rectangular moon pool is arranged on the platform deck, a pair of sliding rails are arranged on the edges of the two sides of the moon pool in parallel, two pile fixing frames are arranged on the two sliding rails in a sliding manner, each pile fixing frame is connected with a pipe lifting truss in a vertical lift manner, each pipe lifting truss comprises two or more single truss sections, and every two single truss sections are connected through one or more hooping devices.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
A circular composite material continuous sucker rod operating machine
ActiveCN105507832BLifting work is realizedMeet length requirementsDrilling rodsDrilling casingsFiberCarbon fibers
Owner:SHENGLI OIL FIELD XINDA PIPE IND TECH DEV CO LTD
Cable reel
The invention provides a cable reel, and belongs to the field of transformer substation auxiliary tools. The cable reel comprises a supporting shaft and further comprises a first rotary disc and a second rotary disc which are arranged at the two ends of the supporting shaft correspondingly. A cable for testing is wound around the supporting shaft and is located between the first rotary disc and the second rotary disc. The first rotary disc is at least provided with four testing inserting holes used for being connected with a testing instrument. One ends of core wires of the cable are connectedwith the testing inserting holes in a one-to-one correspondence manner, and the other end of the cable is used for being connected with to-be-tested power utilization equipment. According to the provided cable reel, one end of the cable is electrically connected with the corresponding testing inserting holes, the cable is wound around the supporting shaft, and therefore the requirement for different cable lengths in the differential protection test can be met; and the core wires of the cable are electrically connected with the one-to-one correspondence testing inserting holes, the wiring error rate is reduced, the circuit connecting stability is improved, and smooth proceeding of the differential protection test is guaranteed.
Owner:STATE GRID CORP OF CHINA +2
Grass trimmer and grass trimming head thereof
ActiveCN112088644AMeet length requirementsImprove reliabilityLawn-mowersRotational axisAgricultural engineering
The invention discloses a grass trimmer and a grass trimming head thereof. The grass trimmer comprises the grass trimming head and a motor; the grass trimming head comprises a spool, a head shell anda transmission piece, wherein the transmission piece has a first position and a second position relative to the spool; when the transmission piece is located at the first position, the grass trimminghead is in a working state; when the transmission piece is located at the second position, the grass trimming head is in an automatic paying-off state; and the barycenter of the transmission piece isdeviated from a rotating axis, when the grass trimming head is driven by the motor to rotate, the transmission piece is subjected to centrifugal force enabling the transmission piece to have the movement trend from the first position to the second position, and when the head shell rotates around the rotating axis, the head shell also applies resistance to the transmission piece against centrifugalforce to prevent movement of the transmission piece from the first position toward the second position. According to the grass trimmer, automatic paying off can be achieved when the length of the grass trimming rope is shortened to a certain length, paying off conditions do not need to be judged manually, and paying off reliability and use convenience are greatly improved.
Owner:NANJING CHERVON IND
Communication signal processing method and wireless communication system
ActiveCN112104440ALength will not be limitedMeet length requirementsTransmission format adaptationCommunications systemRadio frequency signal
The invention relates to a communication signal processing method, device, equipment and system and a storage medium. The method comprises the following steps: carrying out forward error correction code processing on sent information by adopting a preset forward error correction code to obtain at least one code word corresponding to the sent information and a code word index corresponding to eachcode word, wherein the forward error correction code is a multi-system low-density parity check code; according to the code word index corresponding to each code word, performing multi-system cyclic shift spread spectrum modulation on each code word, and determining a multi-system cyclic shift spread spectrum code corresponding to each code word, wherein the multi-system cyclic shift spreading code is a spreading code with any length; and performing radio frequency processing on the multi-system cyclic shift spreading code corresponding to each code word, and sending an obtained radio frequency signal to a receiving end. By adopting the method, the length of the spreading code obtained when the information is modulated and sent is not limited, i.e., the spreading gain of the system is notlimited.
Owner:深圳市华智芯联科技有限公司
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