719 results about "Cycloid" patented technology

The invention discloses a high-precision and high-reliability harmonic reducer tooth profile simulation machining design method, and belongs to the field of precision transmission. A composite cycloid flexible gear tooth profile is designed by establishing a harmonic reducer geometrical relationship model, deducing a flexible gear deformation equation, an accurate rotation angle relationship and a meshing theory based on an envelope method, and a conjugate region and a conjugate tooth profile are calculated by utilizing MATLAB. Actual deformation and theoretical deformation errors of the flexible gear are analyzed through finite element simulation, flexible gear profile parameters are optimized, an actual neutral layer curve is generated, and then a rigid gear profile is enveloped and calculated. The tooth profile design adopts a non-zero inclination angle composite cycloid, so that the meshing area is expanded by more than 30%, and the maximum stress of the flexible gear is reduced by 22.75% in combination with a linear modification method and a finite element modification method. In addition, through a multi-physical field simulation verification system (including static deformation, dynamic contact and fatigue life prediction) and a neural network optimization tooth shape parameter, the transmission performance is remarkably improved. According to the method, the torsional rigidity can be improved by 66%, and the transmission error is controlled within a high-precision range.

The present invention discloses a cycloid motor and a braking method thereof. The cycloid motor comprises: a motor assembly, a brake housing, one end of the brake housing being connected to the motor assembly; an output shaft, the output shaft being connected to the other end of the brake housing and one end of the output shaft being located within the brake housing; a linkage shaft, the linkage shaft being located within the output shaft, one end of the linkage shaft being connected to the motor assembly and the other end of the linkage shaft being connected to the output shaft; a brake assembly, the brake assembly being located within the brake housing and sleeved on the output shaft; an elastic member, the elastic member being installed within the brake housing and being located on one side of the brake assembly; and a piston, the piston being installed within the brake housing and being located on the other side of the brake assembly. The present invention arranges the elastic member and the piston on both sides of the brake assembly, respectively. While achieving a braking function, it can also significantly reduce wear on the piston and increase the service life of the cycloid motor.

The invention relates to the technical field of cycloid cyclone separation machining, in particular to a cycloid cyclone separation machining machine tool, system and method capable of synchronously machining multiple teeth. The cutter shafts are used for fixing and driving cutters, and the number of the cutter shafts is at least two; the workpiece driving piece is used for driving the workpiece shaft; the cutter shaft driving part is used for driving the cutter shaft; the cutter shaft regulation and control unit is used for regulating and controlling the position of the cutter shaft; when the machine tool runs, the cutter shaft driving part and the workpiece driving part run according to a preset rotating speed ratio, and the rotating speeds of the cutter shafts are the same. According to the cycloid rotational separation machining tool, multi-tooth synchronous machining can be achieved, and the cycloid rotational separation machining efficiency and precision can be further improved by combining the cycloid rotational separation machining tool with the cycloid rotational separation machining system and method.

The invention provides a CFD-EDM-based pulse jet power-assisted on-film precision seeding device and a design method, the CFD-EDM-based pulse jet power-assisted on-film precision seeding device comprises a hole making device and a seed sowing device which are arranged in parallel, the hole making device comprises a bottom plate, a motor fixed on the bottom plate through a bracket, a crank fixedly connected with the motor and a first connecting rod hinged with the crank, the device further comprises a second connecting rod, a third connecting rod and a fourth connecting rod. The tail end of the fourth connecting rod is connected with a guide rod. A drill bit is fixedly connected to the guide rod; the seed-metering device comprises a shell, a seed-metering wheel and a blocking wheel, the seed-metering wheel is rotationally connected with the shell, one side of the seed-metering wheel is attached to the inner wall of the shell, and a plurality of nest holes are formed in the seed-metering wheel; a seeding opening is formed in the bottom of the shell, and a cycloid guide rail and an air injection pump are arranged at the seeding opening. According to the invention, the cooperative working mode of the hole making device and the seed metering device is comprehensively considered, and the seed metering success rate of seeds with small and medium particle sizes can be obviously improved through simulation optimization design, so that the seed filling is stable, and the seed metering is uniform.

The invention relates to the technical field of oil field workover treatment, in particular to a rapid blowout wrecking device and method for minor repair operation. According to the technical scheme, a lifting mechanism is installed on workover treatment equipment through a fixing mechanism, a rotary speed reducer is installed at the upper end of the lifting mechanism, a blowout wrecking rotating arm is installed on the upper portion of the rotary speed reducer, the outer end of the blowout wrecking rotating arm is fixedly connected with a fixing base, a turbine is installed in the fixing base, and a rotating short section is installed in the center of the turbine. The lower end of the rotary short section is movably connected with a full-bore plug valve; the worm is installed on one side of the turbine, the worm is driven by the hydraulic cycloid motor to rotate, the worm drives the turbine and the rotary short section to rotate, then the full-bore plug valve is driven to be rotationally connected to an oil pipe of a wellhead, then the switch knob is closed, and blowout wrecking is completed. The full-bore plug valve is installed through mechanical rotation, the follow-up loading function is achieved, potential safety hazards caused by manual installation of the full-bore plug valve are avoided, and rapid blowout wrecking work of blowout is achieved.

The invention is suitable for the field of cycloidal speed reducers, and provides a cycloidal speed reducer which comprises a shell, an input mechanism, an output mechanism, a speed reduction mechanism and a limiting assembly, and is characterized in that the shell comprises a speed reduction supporting front shell and a speed reduction supporting rear shell, and threaded holes are formed in the speed reduction supporting front shell and the speed reduction supporting rear shell; threaded holes are formed in the speed reduction supporting front shell and the speed reduction supporting rear shell in an annular mode, the speed reduction supporting front shell and the speed reduction supporting rear shell are installed in a matched mode through screws, the machining cost of the cycloid speed reducer is reduced, the service life is prolonged, the loss of parts is smaller, meanwhile, the service life can be prolonged by replacing a quick-wear shaft sleeve, and the service life of the cycloid speed reducer is prolonged. And the use cost of the cycloidal-pin wheel speed reducer is further reduced.

The invention discloses a small RV speed reducer for humanoid robot joints. The small RV speed reducer comprises an input assembly, a speed reduction assembly and an output flange. The input assembly drives the transmission sun gear through the input shaft and is meshed with the crank planetary gear set to form first-stage speed reduction. The crank planetary gear set drives the small-tooth-difference gear pair assembly (including the upper / lower winding wheel and the pin wheel housing) to perform planetary motion with a certain angle phase difference, and second-stage speed reduction is achieved. And the output flange is in threaded connection with the input end cover to finish power output. Through compact integration of the planetary gear and the cycloidal gear mechanism, the outer diameter of the speed reducer is controlled within 80 mm, the thickness of the speed reducer is smaller than 30 mm, the high reduction ratio is guaranteed, meanwhile, the size and weight are remarkably reduced, the transmission efficiency is greatly improved, and the speed reducer is suitable for humanoid robot joint scenes with limited space.

The invention discloses a radial brush type-labyrinth sealing device in a cycloid rotor engine. The radial brush type-labyrinth sealing device forms a brush type sealing and labyrinth sealing composite labyrinth mechanism. The brush type-labyrinth sealing device is a dynamic sealing system formed by mutual cooperation of a front baffle, a rear baffle, brush wires, a wave spring piece and a labyrinth groove. The labyrinth groove forms a labyrinth effect, the brush wires form brush type sealing, and the wave spring pieces enhance the multi-layer sealing effect. The labyrinth grooves are square, circular and trapezoidal, a labyrinth effect is formed, gas flow is slowed down through a complex path, and the sealing effect is improved. The brush wires are pushed by the wave spring piece, the brush wires are fixed between the front baffle and the rear baffle, and the brush wires make contact with the outer surface of the rotor to form sealing. And the brush wires are made of cobalt-based high-temperature alloy or carbon fiber materials and are uniformly distributed, so that the sealing efficiency is improved. The radial brush type-labyrinth sealing device is stable under high-speed operation, and the sealing performance and reliability of the cycloid rotor engine under different working conditions are optimized.

The invention relates to a hypocycloidal pin gear speed reducer assembly, a speed reducer and application. The speed reducer comprises an input shaft system, a first output shaft system and a second output shaft system; the number ratio of rotors to stators of the input shaft system is N: (N + 1), the section contours of the rotors and the stators are equidistant lines of a pair of conjugated hypocycloids, the rotors do planetary motion in the stators, the rotors rotate around the centers of the rotors and revolve around the centers of the stators at the same time, and the speed ratio of rotation to revolution is (N + 1): N. An input shaft rotates at the revolution speed of the rotors. Output shafts in the first output shaft system and the second output shaft system are connected through splines on the shafts and rotate according to the difference between the rotation speed and the revolution speed of a rotor, the purpose of speed reduction is achieved, and the speed reduction ratio is N: 1; and the rotor and the stator are made of steel with the hardness of over HRC58. The hypocycloid pin wheel speed reducer has the advantages of being high in transmission efficiency, stable in operation and long in service life, the outer diameter of the hypocycloid pin wheel speed reducer is smaller than the allowable maximum outer diameter of an oil well shaft, the hypocycloid pin wheel speed reducer can be suitable for screw pump oil extraction, and the technical problem that a pin wheel speed reducer cannot be suitable for an oil well all the time is solved.

The invention relates to the technical field of distribution boxes, in particular to an intelligent outdoor comprehensive distribution box which comprises a box body, and a first axis and a cycloid paddle mechanism are arranged in the box body. The first axis extends in the vertical direction; the cycloid paddle mechanism comprises a plurality of blades, the blades are arranged in the circumferential direction of the first axis and can synchronously revolve around the first axis, each blade is provided with a second axis and can rotate around the second axis, and the second axis is parallel to the first axis; during use, a first plane and a second plane are set, and the first plane passes through the local overheating area and coincides with the first axis; the second plane coincides with the first axis and is perpendicular to the first plane so that the interior of the box body can be divided into four heat dissipation areas. When the blades enter the heat dissipation area making contact with the local overheating area, the blades are driven to rotate around the second axis, so that air is guided to the local overheating area in the mode that the swing angle of the blades is changed, and therefore targeted cooling can be conducted.

The invention discloses a compact type planet cycloid joint module. The compact type planet cycloid joint module comprises a first-stage planet wheel speed reducing mechanism, a second-stage cycloid pin wheel speed reducing mechanism and a driving component. A hollow eccentric input shaft of the second-stage cycloidal-pin wheel speed reducing mechanism serves as an output shaft of the first-stage planet wheel speed reducing mechanism, and coaxial transmission is achieved. The hollow eccentric input shaft of the second-stage cycloidal-pin wheel speed reducing mechanism and the output shaft of the first-stage planet wheel speed reducing mechanism share one shaft, so that the axial size of the joint module is small, the module is compact, and the rigidity is improved; an output shaft of a first-stage planet wheel speed reducing mechanism is reduced, meanwhile, a large-diameter hollow eccentric input shaft is adopted, and the weight of the joint module is reduced.

The present invention relates to the technical field of distribution boxes, and specifically to an intelligent outdoor integrated distribution box. The intelligent outdoor integrated distribution box comprises a box body, wherein a first axis and a cycloidal paddle mechanism are arranged in the box body; the first axis extends in a vertical direction; the cycloidal paddle mechanism comprises a plurality of blades, the plurality of blades are arranged circumferentially along the first axis, and can synchronously revolve around the first axis, the blades have a second axis, the blades can rotate around the second axis, and the second axis is parallel to the first axis; when in use, a first plane and a second plane are set, the first plane passes through a local overheating area and coincides with the first axis; the second plane coincides with the first axis and is perpendicular to the first plane, so as to divide the interior of the box body into four heat dissipation areas; when the blade enters the heat dissipation area in contact with the local overheating area, the blade is driven to rotate around the second axis, so as to guide air to the local overheating area by changing its own swing angle, so as to perform targeted cooling.

The high-pressure steering gear comprises a shell, a valve element and a valve sleeve, the valve sleeve is arranged in the shell, the valve element is arranged on the inner wall of the valve sleeve, the outer wall of the valve element is sleeved with a return torsion spring with a larger steering angle, a metering cycloid rotor stator pair is arranged on one side of the shell, and the metering cycloid rotor stator pair is arranged on the other side of the shell. An oil inlet groove P, a right steering oil groove R, a left steering oil groove L and an oil tank oil return groove T which are communicated with one another are formed in the shell, and double rows of second rotor and stator oil distribution radial holes and first rotor and stator oil distribution radial holes which are independent in left-right steering are formed in the shell. Advanced technologies such as flow amplification, cylinder damping vibration attenuation and wide steering angle are built in. The hydraulic steering gear has the advantages of being higher in power density, small in pressure loss, resistant to pressure impact, stable in steering and the like.

The invention discloses a built-in cycloid speed reducer of a humanoid robot joint pin type output structure and a joint module. The problems that an existing robot joint module is large in size, complex in structure, insufficient in transmission reliability and bearing capacity and the like are solved. According to the invention, the frameless torque motor and the cycloidal-pin wheel speed reducer are designed in an integrated built-in manner, so that the structure is highly compact; an output mechanism of the cycloidal speed reducer adopts a pin type output structure, a plurality of transmission pin shafts arranged on an output flange are directly meshed with pin holes in a cycloidal gear, planetary motion of the cycloidal gear is accurately converted into pure rotation motion of the output flange, and the pin type output structure has the advantages of being simple in structure, reliable in transmission and high in bearing capacity. In addition, a parabola modification method is adopted for the tooth profile of the cycloidal gear, the meshing characteristic of the gear is optimized, the transmission stability is improved, and noise is reduced. The joint module has the advantages of being high in integration degree, high in torque density, high in rigidity, high in impact resistance and the like, and is particularly suitable for humanoid robot joints with strict requirements for space and performance.

The cycloid rotor electronic pump (1) according to the invention allows an electric motor (9) to be integrated into the cycloid rotor electronic pump (1) by forming permanent magnets (7) on the outer circumference (6) of an external gear (2) which can be surrounded on the outside by a stator (10) in order to form the electric motor (9). As a result, an additional connection between the electric motor (9) and the cycloidal rotor electronic pump (1) can be omitted, such that axial installation space and cost are saved. At the same time, the external gear (2) and the internal gear (3) act as a transmission, via which additional elements (not shown here) can be driven via a drive shaft (11) connected to the internal gear (3) in a rotationally fixed manner.

The utility model relates to a device for measuring tooth profile and tooth direction of an outer rotor of a cycloid rotor pump, and solves the technical problems that the detection efficiency is low, the operation is relatively complicated, the consumed time is long, and the accuracy of a measurement result cannot be completely ensured in the prior art. The horizontal ruler comprises a base, a wheel disc, a tooth-shaped module, a horizontal ruler rod, a vertical rod, a fastening screw and a deep groove ball bearing. An inner ring of the deep groove ball bearing is fixedly connected with the base, and a wheel disc is arranged on an outer ring of the deep groove ball bearing; different tooth-shaped modules are arranged on the wheel disc; the tooth-shaped module comprises a standard module manufactured according to the standard tooth shape of the outer rotor and a non-standard module which is the same as the standard module in shape and is enlarged or reduced in size, and the tooth-shaped module is used for measuring the tooth shape and the tooth direction of the outer rotor; a vertical rod is arranged on the base, a horizontal ruler rod is arranged on the vertical rod in a sleeving mode, and the horizontal ruler rod can move to any position in the circumferential direction or the axial direction of the vertical rod and then is fixed. Height scales are marked on the vertical rod corresponding to the horizontal ruler rod.

The automobile part torsional fatigue test bench comprises a bench body, a driving mechanism is arranged at one end of the top surface of the bench body, a workpiece carrying structure is arranged at the other end of the top surface of the bench body, a force application structure is arranged at the position, close to the driving mechanism, of the top surface of the bench body, and the driving mechanism comprises a driving bin. The end, away from the force application structure, of the driving bin is fixedly connected with a servo motor, and the two sides of the middle of the interior of the driving bin are fixedly provided with a cycloidal-pin wheel speed reduction assembly and a planetary speed reduction assembly correspondingly. The driving mechanism is driven by the servo motor, a huge oil supply hydraulic system does not need to be used, the occupied area is small, the output torsion load can be switched through the cycloidal-pin wheel speed reduction assembly or the planetary speed reduction assembly, the load output through the planetary speed reduction assembly is low, constant loads can be repeatedly applied to a workpiece for a long time, and the working efficiency is improved. The output load of the cycloidal-pin wheel speed reduction assembly is high, destructive testing of the maximum load can be carried out, and two detection modes can be considered.

The invention is suitable for the field of cycloidal speed reducers, and provides an RV speed reducer which comprises a shell assembly, an input assembly and a speed reduction assembly and is characterized in that the shell assembly comprises a front supporting shell, a rear supporting shell, a positioning bolt and a positioning shaft, and the front supporting shell and the rear supporting shell are fixedly installed through the positioning bolt; positioning holes are annularly formed in the supporting front shell and the supporting rear shell, the positioning shaft is installed in the positioning holes in a rolling mode, the speed reduction assembly comprises a speed reduction sealing cover, a planet assembly and a main speed reduction assembly, the speed reduction sealing cover is installed in the supporting front shell through a bearing, and the circle center of the speed reduction sealing cover coincides with the circle center of the supporting front shell; and the kinetic energy transmission efficiency and the maximum running speed are improved, so that the joint is more suitable for high-speed robot speed reduction joints. Pitting corrosion, micro pitting corrosion and eccentric wear of the balance wheel are avoided, and the service life of the speed reduction assembly is prolonged.

A cycloid rotor pump with an improved pump body structure comprises a pump body, a pump cover, a stator assembly, a rotor, a rotor shell, an inner rotor and an outer rotor, the stator assembly comprises an iron core, a framework, an enameled wire and an inserting piece, the rotor shell comprises a main body part and a surrounding edge part, an axial through shaft hole is formed in the center of the main body part, and an axial through liquid inlet hole is formed in the radial outer side of the shaft hole. The pump body is formed by placing the stator assembly and the rotor shell as inserts in the mold cavity in an injection molding mode, the side, facing the rotor, of the main body part is provided with a first positioning part for preventing the rotor shell from rotating in the mold cavity, and the iron core is provided with a second positioning part for preventing the stator assembly from rotating in the mold cavity. The plastic of the pump body wraps the framework, the enameled wire, the iron core and the periphery of the rotor shell and forms an installation cavity for containing the rotor, and at least the first positioning part, the second positioning part and the tooth part end face of the side, back to the rotor shell, of the iron core are exposed out of the pump body. According to the cycloid rotor pump with the design, production of the pump body is facilitated, and meanwhile the stability of the pump body is considered.

The invention relates to an electric drill speed reduction structure and an electric drill, and provides the electric drill speed reduction structure which comprises a wheel type continuously variable transmission and a cycloidal pin wheel speed reducer. The invention further provides an electric drill. The electric drill is provided with the electric drill speed reduction structure. The speed reduction structure of the electric drill comprises a wheel type continuously variable transmission and a cycloidal pin gear speed reducer, has the characteristics of wide speed regulation range, stepless speed regulation, balanced operation, low noise and the like, and simultaneously overcomes the problems that lubricating grease of a gear box is easy to flow out of a gear shifting hole and the gear shifting is blocked in the traditional structure; the electric drill provided with the electric drill speed reduction structure is far superior to a traditional gear box type electric hand drill in the aspects of rotating speed, torsion and impact rate in a screw driver mode, and due to the fact that stepless speed regulation can be achieved, no matter how power is needed, a user can always enable a power motor to work under the working condition of the maximum power or the maximum energy efficiency by adjusting the speed ratio of speed reduction all the time.

The present invention provides a gerotor hydraulic motor. The gerotor hydraulic motor comprises a rotor-stator pair, a leakage oil channel and one or more groups of components to be cooled. The leakage oil channel guides the hydraulic oil leaked from the axial side of the rotor-stator pair to flow through the components to be cooled so as to cool the components to be cooled. The present invention guides the hydraulic oil leaked from the housing of the gerotor hydraulic motor to flow through a specially designed flow path (i.e., an internal cooling circuit) to take away the heat generated by the friction of the parts inside the housing of the gerotor hydraulic motor, thereby achieving the purpose of reducing the temperature inside the housing of the gerotor hydraulic motor and extending the service life of the gerotor hydraulic motor.

The utility model discloses a TMTB high-voltage cycloid motor brake increasing device which comprises an output shaft and a shell, the output shaft rotationally penetrates through the middle of the shell, a connecting plate is connected to the side face of the shell, a rear shell is connected to the side face of the connecting plate, the output shaft is fixedly connected to a large connecting shaft, and the large connecting shaft is fixedly connected to the shell. The large connecting shaft is located in the shell, the connecting plate and the rear shell, the end of the large connecting shaft is connected with a small linkage shaft, the small linkage shaft is rotationally arranged in the rear shell, a rear partition plate is arranged between the rear shell and the stator and rotor pair, the rear partition plate is arranged on the outer side of the small linkage shaft in a sleeving mode, and a wet-type copper-based friction plate is adopted. The brake has the advantages that the belleville spring serves as a brake composition unit, the copper-based friction plate does not pollute the cleanliness of oil in the motor, the integrated shuttle valve is used in a matched mode, the brake can be released when the motor is started, synchronous braking is achieved when the motor stops running, the braking state during stopping can be effectively guaranteed, and safety and reliability are achieved.

The invention relates to a speed reducer for a robot joint. The speed reducer comprises an inner gear shell, a high-speed input hollow shaft, a first cycloidal gear, a second cycloidal gear, a first roller pin set, a second roller pin set, a pin shaft, an output flange plate and a low-speed output hollow shaft. A first cam and a second cam are integrally arranged on the circumferential outer wall of the high-speed input hollow shaft; the high-speed input hollow shaft is sleeved with the first cycloidal gear and the second cycloidal gear. The first roller pin set and the second roller pin set are arranged along the driving contours of the first cam and the second cam respectively. A plurality of pin shafts which are circumferentially distributed along the rotation axis of the output flange plate are fixedly arranged on the output flange plate; the pin shaft correspondingly penetrates through the pin shaft holes in the first cycloidal gear and the second cycloidal gear in sequence; the output flange plate is rotationally arranged in the inner gear housing; and the low-speed output hollow shaft on the output flange plate penetrates through the high-speed input hollow shaft. The invention has the characteristics of small axial size, high torque and high rigidity.

The three-phase cycloidal planetary reducer comprises eccentric shaft assemblies, cycloidal gears, a planet carrier and a pin wheel housing, the eccentric shaft assemblies are arranged in the circumferential direction of the planet carrier at intervals of 120 degrees, and each eccentric shaft assembly comprises an eccentric shaft, a falling-off type needle bearing and a second needle bearing. The eccentric shaft is provided with three sections of eccentric parts with the same eccentricity, the eccentric directions of the eccentric parts are distributed at intervals of 120 degrees, the eccentric part located in the middle is provided with a falling-off type needle bearing, and the eccentric parts located on the two sides are provided with second needle bearings; one end of the eccentric shaft is connected with a planetary gear through a spline; the eccentric shaft is connected with the planet carrier through a bearing; the cycloidal gear is in transmission connection with the eccentric shaft through a falling-off needle bearing or a second needle bearing at the corresponding position; the planet carrier is connected with the pin wheel housing through a main bearing; a roller pin is installed on the inner side of the pin wheel housing, and the cycloidal gear is meshed with the roller pin. The transmission mechanism has the advantages of being good in integrity, small in transmission error and convenient to assemble.

The invention aims to solve the problem that an existing motor needs to be externally provided with a speed reducer in order to obtain large torque; according to the hypocycloid motor with the floating male rotor, the floating stator is arranged and matched with the inner pin roller, the outer pin roller, the rotor and the oil supply structure, oil pressure distribution in the first gap is changed, under the limiting effect of the outer pin roller, the floating stator is made to deviate and swing, the inner pin roller on the inner side of the floating stator is pushed, the inner pin roller drives the rotor to rotate under the thrust effect, and the floating male rotor is driven to rotate. Finally, the purpose that the output shaft outputs large-torque rotation is achieved. In addition, the floating stator in eccentric offset motion is arranged, so that the rotor can move around the axis of the rotor, and convenience is provided for integrating a sensor, a speed reducer and other structures at the follow-up shaft end of the rotor and the output shaft.

An electric drill reduction structure and an electric drill. The present invention relates to an electric drill reduction structure and an electric drill, and provides an electric drill reduction structure, wherein the electric drill reduction structure comprises a wheel-type continuously variable transmission and a cycloidal pinwheel reducer. The present invention also provides an electric drill, which has the above-mentioned electric drill reduction structure. The electric drill reduction structure comprises a wheel-type continuously variable transmission and a cycloidal pinwheel reducer, and has the characteristics of a wide speed regulation range, stepless speed regulation, balanced operation, low noise, etc., and overcomes the problems of gear box grease easily flowing out of the shift hole and gear shift jamming in traditional structures. The electric drill equipped with the electric drill reduction structure is far superior to traditional gear box hand drills in terms of speed, torque and impact rate in screwdriver mode. Because stepless speed regulation can be achieved, no matter how much power is required, the user can always adjust the speed ratio of the reduction to make the power motor always operate under the maximum power or highest energy efficiency condition.

The invention discloses a double-cycloid speed reducer belonging to the technical field of speed reducers, which comprises an input shaft, a first cycloid mechanism and an output shaft, and is characterized in that a second cycloid mechanism is arranged between the first cycloid mechanism and the output shaft, the second cycloid mechanism is connected in series with the first cycloid mechanism through a transmission shaft, the transmission shaft is linked with the first cycloid mechanism, and the output shaft is connected with the output shaft. The input shaft rotates to drive the transmission shaft to rotate at a reduced speed through the first cycloid mechanism, and the transmission shaft rotates to drive the output shaft to rotate at a reduced speed through the second cycloid mechanism. The first cycloid mechanism and the second cycloid mechanism are arranged in series through the transmission shaft to form a two-stage speed reduction structure of the speed reducer, large-speed-ratio transmission of the speed reducer is achieved, and low noise, low temperature rise, high bearing capacity and high rigidity of the speed reducer in the operation process are kept.

The utility model discloses a bearing type miniature RV speed reducer which comprises a cycloidal shell, an eccentric shaft, an input end flange, a first cycloidal gear, a second cycloidal gear, a cycloidal roller pin, a pin column, a shell locking screw and an output integral cross bearing, and the output integral cross bearing comprises a cross bearing outer ring, a cross bearing inner ring, a cross roller, a plug and a plug screw. The integral filling type crossed roller bearing is directly adopted as an output mechanism, the diameter of the speed reducer can be reduced, assembly is more convenient, the outer ring of the crossed bearing is arranged into a whole, no screw is exposed outside the outer ring of the crossed bearing, the appearance attractiveness of the speed reducer is greatly improved, meanwhile, the length of the speed reducer can be shortened, and the cost of the speed reducer is reduced. And the production cost and the weight of the speed reducer are reduced. In addition, roller pin type bearings without inner and outer rings and retainers can be adopted between the eccentric part of the eccentric shaft and the two cycloidal gears, and the diameter of the speed reducer can be further reduced.

The utility model discloses a cable take-up machine which comprises a driving mechanism, a take-up wheel, a pneumatic box and a cycloid mechanism, the driving mechanism is rotationally connected with a power chuck, one side of the pneumatic box is rotationally connected with a pneumatic chuck, and the two ends of the take-up wheel are connected with the power chuck and the pneumatic chuck respectively; a left sliding rod support is fixedly arranged at the top of the driving mechanism, a servo motor is fixedly arranged on the left sliding rod support, and an output shaft of the servo motor is fixedly connected with a driving chain wheel. A right sliding rod support is fixedly arranged on the top face of the pneumatic box and rotationally connected with a driven chain wheel, and the driving chain wheel and the driven chain wheel are in transmission connection through a chain. The cycloid mechanism comprises a sliding rod, the two ends of the sliding rod are fixedly connected with a left sliding rod support and a right sliding rod support respectively, the sliding rod is slidably connected with a sliding seat, the sliding seat is fixedly connected with a chain, the sliding seat is fixedly provided with a balance wheel support, the balance wheel support is rotationally connected with a set of cycloid wheels, and a cable sequentially bypasses the surfaces of the two cycloid wheels. And the cable can be uniformly and tightly wound on the take-up wheel, and the take-up efficiency is improved.

The invention relates to a hypocycloid mechanism comprising: a shaft (4); a gearwheel (7) rotatable about its center and coupled to the shaft (4); a pinion (8) parallel to the gearwheel (7), the pinion being rotatably mounted on an axle eccentrically passing through the gearwheel (7); a cylinder (1) having a piston (2); a connecting rod (3), one side of which is connected to the piston (2) and the other side of which is rotatably connected to the pinion (8), such that the rotation of the gearwheel (7) and the pinion (8) is associated with the reciprocating movement of the piston (2); at least one bearing-supported stationary part (6) in which the gearwheel (7) is rotatably mounted. The present invention is characterized in that: a fixed member (6) is an annular member provided with teeth on the inner side, and a pinion gear (8) provided with teeth on the outer side and meshing with internal teeth (6 ') of the fixed member (6); the gearwheel (7) is provided with teeth on the outside and is rotatably mounted in the stationary part (6) by means of a bearing (6 '') such that the teeth (6 ') of the stationary part (6) extend over a portion of the thickness of the stationary part, and the stationary part further comprises a toothless surface extending over a portion of the thickness of the stationary part and having a bearing support (6''), a gearwheel (7) having a toothless surface complementary to the bearing (6 '') of the stationary part, the gearwheel (7) being coupled by its teeth (7'') to the shaft (4); the connecting rod (3) has two arms (3a, 3b) extending on both sides of the gear assembly (7, 8) wherein a first arm (3a) is connected to the pinion (8) at a first pivot point (O) on one side of the gear assembly (7, 8) and a second arm (3b) is connected to the pinion (8) at a second pivot point (O) on one side of the gear assembly (7, 8). And the second arm (3b) is connected to the pinion (8) at a second pivot point (O ') on the other side of the gear assembly (7, 8) wherein the orthographic projection of the first point (O) on the plane of the gearwheel (7) and the orthographic projection of the second point (O') on the same plane of the gearwheel (7) are always equal. The invention also relates to an engine and a compressor comprising such a mechanism.