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53results about How to "Improve labor saving" patented technology
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Duplex fiber optic connector plug
InactiveUS20150212282A1Improve operational convenienceEasy to operateCoupling light guidesFiberEngineering
A duplex fiber optic connector plug includes at least one fiber optic connector, a first casing, a second casing and a release lever. The release lever is axially coupled to a surface of the first casing and has an end coupled to a release bracket of the fiber optic connector to form a seesaw design. During operation, the release lever is compressed by the force of the finger, so that an end of the release lever is elevated, and the other end compresses the release bracket downward to release from a fiber optic socket, so as to provide an intuitively convenient operation and improve the convenience of use.
Owner:JYH ENG TECH
Duplex fiber optic connector plug
InactiveUS20160154190A1Improve operational convenienceEasy to operateCoupling light guidesFiberEngineering
A duplex fiber optic connector plug includes at least one fiber optic connector, a first casing, a second casing and a release lever. The release lever is axially coupled to a surface of the first casing and has an end coupled to a release bracket of the fiber optic connector to form a seesaw design. During operation, the release lever is compressed by the force of the finger, so that an end of the release lever is elevated, and the other end compresses the release bracket downward to release from a fiber optic socket, so as to provide an intuitively convenient operation and improve the convenience of use.
Owner:JYH ENG TECH
Mechanical-locking-based wire traction variable stiffness mechanism
ActiveCN107097218ASimple structureSimple designProgramme-controlled manipulatorVariable stiffnessGear wheel
The invention discloses a mechanical-locking-based wire traction variable stiffness mechanism. The mechanism comprises a continuum robot basic structure, variable stiffness locking mechanisms and a variable stiffness traction mechanism. The continuum robot basic structure is composed of connection disks, a central wire and four driving wires distributed circumferentially. The connection disks include the middle connection disks and the tail end connection disk. The tail end connection disk is fixed to the tail end of the central wire and the tail ends of the driving wires through a wedge-shaped locking mouth. The middle connection disks are fixed to the central wire through wedge-shaped locking mouths. Each variable stiffness locking mechanism is a single-degree-of-freedom mechanism composed of sliding bevel wheels, springs, incomplete gears, connecting rods and inlaid metal sheets with each middle connection disk as a rack. The variable stiffness traction mechanism is composed of wire guide sheaths, a tensile metal wire and metal wire lock pieces. The wire guide sheaths and the central wire are concentric. The tensile metal wire penetrates through the wire guide sheaths and the wedge-shaped locking mouths of the central wire and is fixed to the sliding bevel gears through the metal wire lock pieces. The mechanical-locking-based wire traction variable stiffness mechanism is fast in rigid and flexible state switching and high in positioning rigidity.
Owner:TIANJIN UNIV
Optical fiber terminal fixing tool for winding optical fiber and optical fiber winding method
ActiveUS20150008275A1Improve labor-savingImprove efficiencyFilament handlingFibre mechanical structuresWinding machineBobbin
An optical fiber terminal fixing tool includes: a disc-shaped substrate having a plate surface; a holding surface which is provided on the plate surface and interposes the terminal portion of the optical fiber between the holding surface and the first flange portion; and a protrusion which continues in a circumferential direction with a larger diameter than an outer diameter of the first flange portion in an outer circumferential portion on the plate surface while protruding toward the bobbin in a state where the fixing tool is mounted on the rotating shaft of the optical fiber winding machine.
Owner:THE FUJIKURA CABLE WORKS LTD
Replacement structure of ratchet wrench
A replacement structure of a ratchet wrench comprises a wrench rod, wherein at least one of the two ends of the wrench rod is provided with a head part; the head part is provided with a hollow pulley groove the bottom edge of which is provided with a butting edge; the head part is provided with a fork groove at the periphery of the pulley groove adjacent to the wrench rod; the head part is provided with a containing groove at the inner wall surface of the fork groove and the top surface of the head part is locked with a cover plate; a registration wheel is arranged on the butting edge of the pulley groove of the head part, the outer edge of the registration wheel is provided with a plurality of ratchets, and a position adjacent to the top edge, on the outer edge of the registration wheel is provided with a spacing ring groove; a brake pad is arranged in the fork groove of the head part and is provided with the plurality of the ratchets for braking the registration wheel in an engaged mode; the middle section adjacent to the top edge, of the brake pad is provided with a limit bump corresponding to the spacing ring groove; the top surface of the brake pad utilizes a connecting rod to fix zipper pulls which are attached to and abutted against the top surface of the cover plate to move; and the brake pad is provided with a fixed seat in the containing groove of the head part. The structure in the invention can enhance labor-saving performance and stationarity of the movement of the brake pad, enables the replacement of the registration wheel to be more smooth and convenient, enhances the structure strength, prolongs the service life and prevents component loss.
Owner:巨琩有限公司
Steel wire rope end ring compressing device
ActiveCN106835783ASimple structureEasy to carryMetal-working apparatusRope making machinesPulleyWire rope
The invention discloses a steel wire rope end ring compressing device, and belongs to the technical field of compressing devices. The compressing device comprises a sliding rail, and a fixed clamping plate and a supporting plate which are fixed to the two ends of the sliding rail. The sliding rail is sleeved with a rail sleeve. The lower end of a movable clamping plate is fixedly connected with the rail sleeve. The movable clamping plate is driven by a driving device to slide along the slide rail together with the rail sleeve. The compressing device is simple in structure, convenient to carry, capable of adapting to any construction site, capable of flattening a steel wire rope end ring with the large diameter, convenient to use and capable of saving time and labor. The bent portions of the movable clamping plate and the fixed clamping plate are matched with protrusion portions, so that steel wire rope end rings with different diameters can be compressed. The steel wire rope end rings obtained after being flattened by the compressing device can smoothly pass through a pulley or a U-shaped ring or other positions.
Owner:STATE GRID CORP OF CHINA +2
Tread splicing apparatus
InactiveCN101143488AImprove labor savingQuality improvementTyresLength measurementGobio gobio obtusirostris
An automatic thread splicing apparatus is provided to cut the thread of tyre semifinished product wound on the trolley into a predetermined length to wind on a molding belt drum. A thread is supplied to a convey belt through a loop unit, and cut into a predetermined length by a cutter unit. The cut thread passes through a compression roll, and is wound onto a molding belt drum and spliced. A width guide unit for guiding the initial width of the thread is arrange in front of the cutter unit, and a marking unit is arrange in rear of the cutter unit. A length measurement unit is interposed between the marking unit and the molding belt drum so as to measure the length of the cut thread and has a marked portion formed by the marking unit. A splicing checking unit is spaced apart from the molding belt drum so as to check the splicing interval of the thread wound on the molding belt drum.
Owner:HANKOOK TIRE WORLDWIDE
Rapid undercarriage moving equipment and using method
The invention provides rapid undercarriage moving equipment and a using method. The rapid moving equipment comprises a frame body, a lifting bottom plate, a rear pull rod and a bogie used in the rotating direction of the frame body. The bogie is mounted in front of the frame body; a plurality of universal wheels are mounted at the front end of the bottom of the frame body; a first driving unit ismounted on the frame body; the output end of the first driving unit is detachably and fixedly connected with the rear pull rod, and the lifting bottom plate is installed in a closed area defined by the rear pull rod and the frame body; the lifting bottom plate can rotate upwards from the end close to the rear pull rod to the side close to the bogie. A first baffle is mounted on the lifting bottomplate; and two adjustable brackets are mounted at the side, close to the bogie, of the rear pull rod. According to the rapid undercarriage moving equipment, an aircraft can be rapidly separated from arunway, so that the residence time of the aircraft on the runway is shortened, and the normal flight order of an airport is rapidly and effectively recovered.
Owner:中安(天津)航空设备有限公司
Integrated point of interface (POI)
ActiveCN105489992AReduce investmentImprove product qualityWaveguide type devicesClassical mechanicsMechanical engineering
Owner:COMBA TELECOM TECH (GUANGZHOU) CO LTD +1
Disinfection sterilization holding device for medical instruments in operating rooms
The invention discloses a disinfection sterilization holding device for medical instruments in operating rooms. The disinfection sterilization holding device comprises a box body. The four corners ofthe bottom of the box body are respectively provided with rollers. The front wall body on one side of the box body is provided with an air inlet. The rear wall body on one side of the box body is provided with a drainage port. The upper wall body on one side of the box body is provided with a handle. The top on one side of the box body is provided with a handwheel translation mechanism. A sealingcover is arranged below the handwheel translation mechanism. By arranging a water discharge mechanism, condensed water in the sealing cover can be easily drained out, thereby preventing the condensedwater from flowing to ground after the sealing cover is opened. By arranging a supporting mechanism, the condensed water subject to disinfection and sterilization can be drained out when medical instruments are placed on the supporting mechanism, thereby reducing the work intensity during cleaning. By arranging a limit mechanism, the entire supporting mechanism can be more stable when being lifted, thereby avoiding influence on the lifting due to shaking.
Owner:深圳市新东升物业管理有限公司
Optical fiber terminal fixing tool for winding optical fiber and optical fiber winding method
ActiveUS9810870B2Improve labor-savingImprove efficiencyFilament handlingFibre mechanical structuresWinding machineCircular disc
An optical fiber terminal fixing tool includes: a disc-shaped substrate having a plate surface; a holding surface which is provided on the plate surface and interposes the terminal portion of the optical fiber between the holding surface and the first flange portion; and a protrusion which continues in a circumferential direction with a larger diameter than an outer diameter of the first flange portion in an outer circumferential portion on the plate surface while protruding toward the bobbin in a state where the fixing tool is mounted on the rotating shaft of the optical fiber winding machine.
Owner:THE FUJIKURA CABLE WORKS LTD
Adjustable strap with handles for lifting objects safely
InactiveCN101412466AImprove securityIncrease heightManual conveyance devicesEngineeringErgonomics in Canada
Disclosed is a manual lifting apparatus for providing adjustable handles that allow a person to more effectively, efficiently, and safely lift objects. The present invention provides a webbing attached to two ergonomic handles that assists a user in lifting objects. The handles are adjustable to allow a user to adjust the height from which the user must lift the object thus allowing the user to effectively lift an object from the power zone to more effectively and safely lift objects.
Owner:戴维·希尔 +1
Novel swing
Owner:赵海潮
Simplified method for promoting flower bud early differentiation of strawberry seedlings
InactiveCN110771453AAchieve precociousEasy to manageWatering devicesFertilising methodsFragariaSeedling
The invention discloses a simplified method for promoting flower bud early differentiation of strawberry seedlings. According to the method, trough seedling cultivation is modified into rack seedlingcultivation to realize flower bud early differentiation, early planting and early harvesting of the strawberry seedlings, strawberries come into the market in early November and about 40 days earlierthan that of conventional seedling cultivation, and yield and quality of the strawberries in different batches have no significant difference as compared with those of strawberries in a conventional seedling cultivation mode. The strawberry seedlings cultivated according to the method is strong and early and uniform in flower bud differentiation, although the fruit quality and yield are equivalentto those in a traditional ground seedling cultivation mode, high yield of fruits in an early stage is realized, and a net profit gain of per mu is 12500-15000yuan.
Owner:ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
Overflow dam with flood discharge function for water conservancy project
The invention belongs to the technical field of water conservancy projects, and particularly relates to an overflow dam with a flood discharge function for a water conservancy project. When the overflow dam is used and the upstream water level is full during the flood peak period, water blocked by the overflow dam can be completely released only by slowly lifting an inserting plate, when the inserting plate is lifted, the water flow at the bottom impacts on a first rotating wheel, at the moment, a rope winding wheel starts to wind a rope, then a lifting force is provided for the inserting plate, and the problem that the inserting plate is lifted in a more labor-saving mode is solved. According to the scheme, the overflow dam comprises a dam body, wherein the dam body is of a prism-shaped structure with a cavity; a notch is reserved in the middle of the dam body; T-shaped sliding grooves are formed in the opposite sides of the notch; and the same inserting plate with a flat cuboid structure with a cavity is connected between the two T-shaped sliding grooves in a sliding mode. The overflow dam is novel in structure, good in drainage smoothness performance and good in silt dischargingeffect, the high water level can be reduced in time, and the flood discharge capacity and speed are improved.
Owner:宁夏瑞力建设工程有限公司
Bidirectional screw rod device and care sickbed lifting device
InactiveCN104613151ASmooth rotationPlay a restrictive roleGearingGear vibration/noise dampingEngineeringMechanical engineering
The invention provides a bidirectional screw rod device and a care sickbed lifting device, and belongs to the field of transmission devices. The bidirectional screw device comprises a screw rod body, a left-handed assembly and a right-handed assembly, wherein a left-handed thread and a right-handed thread are arranged at the two ends of the screw rod body respectively; nut fixing baffle blocks are arranged on the screw rod body; the left-handed assembly comprises a left-handed nut and a limiting slide block; the right-handed assembly comprises a right-handed nut and a limiting slide block. The bidirectional screw rod device is quite steady to use, free of noise, good in using effect and long in service life. The care sickbed lifting device comprises a bedstead and a base, wherein two lifting connecting rod assemblies are symmetrically arranged on the two sides of the base; the upper end of each lifting connecting rod assembly is hinged to the bedstead, the lower end of each lifting connecting rod assembly is hinged to the base, and the bidirectional screw device is arranged between the two lifting connecting rod assemblies. During the use, the care sickbed lifting device does not generate noise in the lifting process, so that rest of a patient is not affected, a good rehabilitating environment can be provided for the patient and the patient can heal faster.
Owner:SICHUAN YU FENG MEDICAL APP
Lens centering machine
InactiveCN1575924AThe number of settings is halvedNo wasteEdge grinding machinesOptical surface grinding machinesOptical axisMechanical engineering
Two pairs of processing units 10a, 10b which are supported by a support frame 13 formed on a machine frame and independently acting with each other are provided at the centering and edging machine having one work rest 7 and a loader 9 on the machine frame. The two pairs of processing units 10a, 10b sharing the machine frame, the work rest 7, and the loader 9 are provided on one machine, which realizes the centering and edging machine on which two lenses are simultaneously processed in a roughly equal installation area to the conventional centering and edging machine having only one processing unit.
Owner:NAKAMURATOME SEIMITSU IND
Power-assisted swing with alarming function
The invention discloses a swing with an alarm function and power assistance, which comprises a swing frame, a beam, a bearing, a swing rod, a seat plate, a fixing rod, a counterweight, a mounting rod, a touch switch, an alarm and a solar battery panel. The upper part of the swing frame is provided with a horizontally arranged beam, and the fixed sleeve on the beam is provided with two bearings, and the outer ring of each bearing is fixedly connected with a swing rod, between the lower ends of the two swing rods. A seat plate is fixed, and the outer ring of each bearing is fixed with a fixed rod forming a straight line with the swing rod, and a counterweight is fixed between the outer ends of the two fixed rods, and the swing The front part of the frame is hingedly provided with a mounting rod, the free end of the mounting rod is provided with a touch switch, the touch switch is located on the front side of the swing rod, the outer part of the swing frame is provided with an alarm, and the swing The upper part of the frame is provided with a solar panel, and compared with the prior art, it can improve the labor saving of playing on the swing and improve the safety of playing on the swing.
Owner:赵海潮
Adjustable strap with handles for lifting objects safely
InactiveCN101412466BReduce weightWeight increaseTravelling carriersHoldersEngineeringErgonomics in Canada
Disclosed is a manual lifting apparatus for providing adjustable handles that allow a person to more effectively, efficiently, and safely lift objects. The present invention provides a webbing attached to two ergonomic handles that assists a user in lifting objects. The handles are adjustable to allow a user to adjust the height from which the user must lift the object thus allowing the user to effectively lift an object from the power zone to more effectively and safely lift objects.
Owner:戴维·希尔 +1
Power saving device of transmission mechanism
InactiveCN1424521APlay a power-saving effectThe effect of saving effort is goodGearingDrive shaftEngineering
A labour economizer which is designed based on the lever principle sets driving shaft built by a couple of pressure lever at motive force arm end of lever and sets driven shaft built by a couple of driving structural component at drag force arm end of lever. In the course of one cycle rotation of the driving and driven shafts, each sliding side rod can only push the driven shaft for one angle rotation so that the labour economizer will achieve the optimum effect of labour economizing when the rotary radius formed by the pressure lever and formed by the driving component is the same. To set it on the rickshaw, it will save mush more manpower than the rickshaw set with the economizer in existing technique under the same speed ratio.
Owner:王乃武
A kind of wire rope rope head ring compactor
ActiveCN106835783BSimple structureEasy to carryMetal-working apparatusRope making machinesEngineeringPulley
The invention discloses a steel wire rope end ring compressing device, and belongs to the technical field of compressing devices. The compressing device comprises a sliding rail, and a fixed clamping plate and a supporting plate which are fixed to the two ends of the sliding rail. The sliding rail is sleeved with a rail sleeve. The lower end of a movable clamping plate is fixedly connected with the rail sleeve. The movable clamping plate is driven by a driving device to slide along the slide rail together with the rail sleeve. The compressing device is simple in structure, convenient to carry, capable of adapting to any construction site, capable of flattening a steel wire rope end ring with the large diameter, convenient to use and capable of saving time and labor. The bent portions of the movable clamping plate and the fixed clamping plate are matched with protrusion portions, so that steel wire rope end rings with different diameters can be compressed. The steel wire rope end rings obtained after being flattened by the compressing device can smoothly pass through a pulley or a U-shaped ring or other positions.
Owner:STATE GRID CORP OF CHINA +2
Portable loading and unloading transport vehicle
The invention relates to a portable loading and unloading transport vehicle which comprises an underframe, first arc-shaped sleeve pipes, second arc-shaped sleeve pipes, third arc-shaped sleeve pipes,hoisting frames and sleeve pipe withdrawing devices, wherein the first arc-shaped sleeve pipes, the second arc-shaped sleeve pipes and the third arc-shaped sleeve pipes are jointed in sequence in a sleeved mode to form arc-shaped telescopic pipes, and two arc-shaped telescopic pipes are arranged on the underframe side by side; each hoisting frame is arranged at one end of the corresponding arc-shaped telescopic pipe, and the other end of the arc-shaped telescopic pipe is arranged on the underframe and is provided with the corresponding sleeve pipe withdrawing device; and each sleeve pipe withdrawing device is used for withdrawing the corresponding extended arc-shaped telescopic pipe. According to the portable loading and unloading transport vehicle, the triple sleeve pipes are sleeved together and is hung on the underframe, so that the occupied space can be reduced, and the purpose of portability is achieved.
Owner:CHANGAN UNIV
Replacement structure of ratchet wrench
InactiveCN101905451BEasy to replaceMobile saves effortSpannersWrenchesEngineeringUltimate tensile strength
Owner:巨琩有限公司
Front drive reciprocating type stepless labor-saving bicycle
InactiveCN103523146AReduced pedaling cycle timeGood for riding speedChain/belt transmissionRider propulsionFreewheelDrive wheel
The invention discloses a front drive reciprocating type stepless labor-saving bicycle which comprises existing components. A shaft sleeve is welded at the front end of a frame and is close to the rear of the front end of the frame, a flywheel is fixed to one ends of bearings via an axial bar, and a chain wheel and another flywheel are fixed to the other ends of the bearings; a bearing pulley is connected to the outer periphery of a front fork barrel in a sleeved manner; a left lever and a right lever of pedals are connected onto the frame and the lower ends of the two flywheels; a chain comprising steel wire ropes is arranged in the middle sections of the flywheels, is wound around the bearing pulley to be meshed with two rear ends of the two flywheels and is connected with rear positions of the front ends of the two levers; a reducing driving wheel is arranged at the right end of the axis of the frame, and a pinion of the reducing driving wheel is connected the chain wheel by a chain, and a gear wheel of the reducing driving wheel is connected with a rear-circle flywheel by another chain. The front drive reciprocating type stepless labor-saving bicycle has the advantages that the stepping cycle can be shortened, riding acceleration can be facilitated, circulation disappearance of a moment arm lever effect can be prevented, power consumption can be halved, a moment arm is triple a resistance arm, a large quantity of power can be saved, and the pedals can slide along the levers, so that the speed can be steplessly changed, and a labor saving effect is better than a labor saving effect of a speed-variable bicycle; the requirement on riding power can be met by the gravity of the two legs of a rider, so that the rider does not feel tired, the front drive reciprocating type stepless labor-saving bicycle is applicable to long journal and favorable for jam decrease, emission reduction, energy conservation and low-carbon life, and great economical and social benefits can be realized.
Owner:张俊岭
Precision electrical appliance control cabinet
InactiveCN107148181AAvoid more difficult problems when hanging on the wallEasy to installCasings/cabinets/drawers detailsElectrostatic chargesPolyethylene glycolEngineering
The invention discloses a precision electrical appliance control cabinet. The precision electrical appliance control cabinet comprises a main cabinet body panel, an installation fixing piece and a protruding platform, wherein the installation fixing piece is connected with the main cabinet body panel by an installation fixing connection rod, the protruding platform is arranged at a right middle position of a front surface of the main cabinet body panel, and the main cabinet body panel comprises a reinforcement core board, a shaping plate, a corrosion-prevention plate and an anti-static layer, the reinforcement core board is arranged at the innermost layer of the main cabinet body panel, the corrosion-prevention layer is arranged outside the anti-static layer in an extruded manner, a layer of anti-static thin film is arranged on an outer surface of the anti-static layer in an extruded manner, and the anti-static thin film comprises the following raw materials: 18-22 parts of silica powder, 3-5 parts of titanium dioxide, 1-4 parts of curing agent, 2-5 parts of polyethylene glycol and 4-5 parts of ammonium ethoxy alkyl ammonium sulfate. The precision electrical appliance control cabinet has the advantages of labor saving, higher safety and the like, and is more convenient to install, and the problem that an existing control cabinet is relatively difficult to hang on a wall is prevented.
Owner:滁州市朝友精密制造有限公司
Labor-saving perforating machine
The invention discloses a labor-saving perforating machine, which comprises a base (1), a handle (2), tools (3) and a support (4), wherein the support (4) is fixedly connected with the base (4); the handle (2) is hinged to the support (4); the tools (3) are connected to the support (4) in a sliding way; the base (1) is provided with punched holes (11) which correspond to the tools (3) one by one; a bevel (12) is arranged on the base (1) right below the tools (3); the included angle a between the axes of the tools (3) and the bevel (12) is smaller than 90 degrees; the punched holes (11) are formed in the bevel (12). Compared with the prior art, the force used when the labor-saving perforating machine is used for perforating is at least 10 % smaller than the force used when a labor-saving perforating machine in the market is used for perforating, so that the labor-saving perforating machine has the characteristics of fewer parts, simple structure, lower cost, easiness in assembly and convenience in use.
Owner:NINGBO DELI BINGING EQIPMENT CO LTD
System, information processing apparatus, information processing method, and storage medium including an improved function for adding information used to sort scanned data
ActiveUS9041961B2Improve labor savingPictoral communicationDigital output to print unitsInformation processingComputer hardware
Owner:CANON KK
Novel multifunctional garden scissors
The invention discloses novel multifunctional garden scissors. The scissors include a first tool holder, a second tool holder, a hinge shaft, a first tool bit, a second tool bit, a mounting groove, aradio, a storage battery, a covering plate, a rubber sleeve, multiple reflective strips, a concave blade and jags; the first tool holder is hinged to the second tool holder through the hinge shaft, the first tool bit is integrally arranged at the upper end of the first tool holder, a second tool bit is integrally arranged at the upper end of the second tool holder, and the mounting groove is formed in the side portion of the first tool holder; the mounting groove is internally provided with the radio and the storage battery, the storage battery is electrically connected with the radio, the covering plate is hinged to the opening of the mounting groove through a hinge, the rubber sleeve slidingly sleeves the first tool holder, and the annular reflective strips are arranged at the exteriorsof all the first tool holder and the second tool holder. Compared with the prior art, the garden scissors have the advantages that thick branches can be sawed off conveniently, the radio can be organically combined with the garden scissors, the labor-saving performance and the practicability of the garden scissors are improved, the structure is simple, and the garden scissors are convenient to use.
Owner:XINCHANG SHENGXIA MACHINERY PLANT
Lever servo unit with changeable elevation angle
InactiveCN1843889AReduce distanceElevation angle increasesLifting framesEngineeringHydraulic cylinder
The invention discloses a lifter of vehicle, especially providing an elevation-variable lever device, which comprises a bottom support, a platform, brackets, a piston rod and a hydraulic cylinder. Wherein, the brackets are connected between the bottom support and the platform; the brackets are hinged to each other; the piston rod is matched with hydraulic cylinder, whose two ends are connected to the bracket, while at least one connection is hinged by connecting blocks. The invention has the advantages that: the platform has small distance from bottom support, without digging out sand; the position of lifter can be freely changed; the elevation is increased caused by hinged connecting block, to improve the lifting speed.
Owner:上海太平洋机电制造有限公司
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