46results about How to "Drive compact" patented technology

The invention discloses a lever ratchet wheel linkage bicycle, comprising a bicycle frame, a front bicycle wheel, a rear bicycle wheel, a rear wheel shaft and a bicycle wheel drive device, wherein, the bicycle wheel drive device comprises a left lever and right lever up-to-down conversion device and a left ratchet wheel and right ratchet wheel drive device, wherein, the left lever and right left up-to-down conversion device comprises a lever, a lever connector, a frame connector, a sun wheel, a planet wheel, a gear ring and a central shaft; and the left ratchet wheel and right ratchet wheel drive device is a friction-type ratchet wheel mechanism comprising a roller, a slope-type one-way clutch, a ratchet wheel hub and a ratchet wheel connector. In the invention, the drive, speed change and the acting force are wholly centralized on the rear wheel shaft to lead the length of the lever to be 3-5 times of a crank mechanism; the lever can be retracted; a seat cushion can be moved front and back; the pedal rotating angle of both feet is changed to form the action of stepless speed regulation; and the speed is changed by a star wheel structure, so as to lead the transmission to be compact and the operation to be reliable. The invention provides a bicycle which is brand new, has simple structure, high transmission rate, long service life, low failure rate, convenient maintenance and comfort and stable riding.

The invention discloses a polishing and grinding machine capable of changing the diameter through the cooperation of a screw and a bevel gear, which comprises a first motor, a top cover, a circular tube-shaped fixing sleeve, a dust collecting cover seat, an end gear, a second motor, and a grinding groove Disk, screw fixing frame and air ring, the dust collection cover seat is meshed with the end face gear, the fixed sleeve is connected with the dust collection connecting pipe through the bearing, a dust storage chamber is formed between the grinding groove plate and the dust collection cover seat, the air ring and the storage The dust chamber is connected, the fixed sleeve is provided with a collector ring, the second motor is electrically connected with the collector ring, the second motor is connected with the active bevel gear, the polishing groove plate is slid in the radial direction and connected with the polishing and polishing assembly, and the polishing and polishing assembly A variable-diameter screw is threaded, and the variable-diameter screw is connected with a driven bevel gear, the driven bevel gear meshes with the driving bevel gear, and the grinding groove disc is provided with a dust suction hole; the invention can realize the adjustment of the active radius of the polishing and grinding assembly, thereby It can solve the problem of relatively large grinding dead angle, high polishing efficiency and low cost.

The invention discloses a maintenance instrument for a moisturizing beauty pen, comprising a body, a first cavity is arranged in the body, a waste water tank is connected to the lower end surface of the body, and a waste water tank is arranged in the waste water tank A waste water chamber with an upward opening, the waste water chamber communicates with the first cavity and is provided with a downpipe, the top inner wall of the first cavity is embedded with a motor located at the upper end of the downwater pipe, and the lower end of the motor is The power is connected to the first transmission shaft that extends up and down on the right, and the lower end of the first transmission shaft is fixedly connected with the first coupling disk, and the first coupling disk is provided with a coupling groove that opens downward, and the coupling shaft The grooves are opposed to each other and connected with a second drive shaft extending up and down, and the lower end of the second drive shaft is fixedly connected with a pen tube; the present invention has simple structure, convenient operation, and the centrifugal rotation fully air-dries the water vapor inside the root of the pen, and the structure of the Fushun beauty pen ensures that the beauty pen No deformation.

A wall climbing robot with V-shaped permanent magnet chain sheets buffered by elastic steel sheets solves the problem that an existing water-cooled water robot is not flexible in movement and climbing. Every two adjacent elastic steel sheets are arranged in a crossing mode. Two crossed elastic steel sheet assemblies are arranged vertically. The two elastic steel sheets in the middle of the left side are hinged to a main frame body on the left side through a first pin. The two elastic steel sheets in the middle of the right side are hinged to the main frame body on the right side through a first pin. The upper elastic steel sheet and the lower elastic steel sheet on the left side are hinged to corresponding fixing pieces through second pins respectively. The upper elastic steel sheet and the lower elastic steel sheet on the right side are hinged to corresponding fixing pieces through second pins respectively. Each fixing piece is fixedly arranged on a corresponding connecting rod. Each driven wheel fixing frame is fixedly provided with a probe supporting mechanism. Each trapezoid synchronous belt is evenly provided with a plurality of V-shaped supports. The V-shaped openings of the V-shaped supports are right opposite to the length direction of the trapezoid synchronous belts. A magnet is arranged on the inner wall of each V-shaped sheet of each V-shaped support. The wall climbing robot is used for detecting the water-cooled wall.

The invention discloses a polishing and grinding method. The polishing and grinding method involves a first motor, a top cover, a circular tubular fixing sleeve, a dust-collecting cover base, a face gear, a second motor, a grinding groove disc, a screw fixing frame and an air ring; the dust-collecting cover base is meshed with the end face gear, the fixing sleeve is connected with a dust-collecting connecting pipe through a bearing part, a dust storage chamber is formed between the grinding groove disc and the dust-collecting cover base, the air ring is in communication with the dust storage chamber, the fixing sleeve is provided with a current collecting ring, the second motor is electrically connected with the current collecting ring, the second motor is connected with a driving bevel gear, the polishing groove disc is in connection with a polishing grinding assembly in a radial sliding way, the polishing grinding assembly is in threaded connection with a variable-diameter screw rod,the diameter-variable screw rod is connected with a driven bevel gear, the driven bevel gear is meshed with the driving bevel gear, and the grinding groove disc is provided with a dust suction hole.According to the polishing and grinding method, the movable radius of the polishing grinding assembly can be adjusted so that the problem of large polishing dead angle can be solved, the polishing efficiency is high, and the cost is low.

The invention provides a coaxial type unmanned helicopter main driving structure, belongs to the technical field of air vehicles, and aims at solving the problems in the prior art that a main driving chain is long, the transmission is not stable and the volume mass is great. A synchronized reversing mechanism comprises an inner shaft, an outer shaft, an inner sleeve assembly, an outer sleeve assembly and a driving bracket, wherein the inner shaft and the outer shaft are hollow shafts, and are coaxially sleeved; the outer sleeve assembly is fixedly connected with the outer shaft; the inner sleeve assembly is fixedly connected with the inner shaft; a roller which is positioned by the driving bracket is arranged between the inner sleeve assembly and the outer sleeve assembly; the inner sleeve assembly and the outer sleeve assembly are in eccentric structures; the roller is tangent to the inner ring surface of the outer sleeve assembly and the outer ring surface of the inner sleeve assembly respectively; the upper end of the inner shaft is fixedly connected with an upper rotor wing mechanism, and the upper end of the outer shaft is fixedly connected with a lower rotor wing mechanism; the upper rotor wing mechanism and the lower rotor wing mechanism commonly provide a lifting force; the lower end of the inner shaft is fixedly connected with an output shaft of a brushless motor by a plum-blossom-shaped shaft coupler; and the lower end face of the brushless motor is fixedly connected with the lower end face of a main supporting frame.

The invention relates to a climbing arm robot with V-shaped permanent magnetic chain sheets and a spring buffering mechanism so as to solve the problems that existing water wall robots move and climb inflexibly. Each crossed spring assembly comprises two springs which are arranged in a crossed mode, two sets of the crossed spring assemblies are arranged in an up-down mode, and the adjacent four springs are formed into a rhombus; the two springs in the middle of the left side are hinged to a left main frame body through a first pin, and the two springs in the middle of the right side are hinged to a right main frame body through a first pin; the upper spring and lower spring on the left side are hinged to corresponding fixed pieces through second pins respectively, and the upper spring and lower spring on the right side are hinged to corresponding fixed pieces through second pins respectively; each fixed piece is fixedly installed on a corresponding connecting rod, and a probe supporting mechanism is fixedly installed on each driven wheel fixing frame; a plurality of V-shaped brackets are uniformly distributed on each trapezoid synchronous belt, and a magnetic block is arranged on the inner wall of the V-shaped sheet of each V-shaped bracket. The climbing arm robot with the V-shaped permanent magnetic chain sheets and the spring buffering mechanism is used for water wall inspecting.