48results about How to "Reduce the number of transmission stages" patented technology

The invention relates to a combination-drive wind generator speed increasing gear box which is characterized in that: ring gears are arranged between a front box body and a rear box body and connected with each other in turn; a rear end cover is arranged on the rear box body; an input planet carrier and a sun gear are coaxial; a front end and a rear end of the input planet carrier are arranged on the front box body and the rear box body through bearings; three planet wheels are evenly arranged on the periphery of the input planet carrier and simultaneously meshed with the ring gears and the sun gear; one end of a sun gear shaft is connected with the input planet carrier through a bearing; an unclosed end face cover is arranged on an end part of the sun gear shaft; an end part on the other end of the sun gear shaft is connected with an output spline shaft through a spline; the output spline shaft passes through the rear box body; sealing devices are arranged on the connecting position of the front end of the input planet carrier and the front box body, in the unclosed end face cover on the connecting position of the input planet carrier and the sun gear shaft, and on the connecting position of the output spline shaft and the rear box body; lubricating pipes leading to the bearings are arranged inside the front box body, the rear box body and the input planet carrier.

The invention discloses a transmission device capable of changing reciprocating rotation motion into unidirectional rotation motion. According to the transmission device, a multistage gear transmission mode is utilized, the reciprocating rotation motion of an input shaft is subjected to multistage gear transmission through two unidirectional couplers, and claw wheels of the unidirectional couplers are driven to rotate clockwise or counterclockwise, so that the two unidirectional couplers can rotate clockwise or counterclockwise; therefore, an output shaft always keeps rotating clockwise in spite of counterclockwise rotation or clockwise rotation of the input shaft, so that the unidirectional rotation output of the output shaft is realized; and the device has the characteristics of reciprocating rotation driving and unidirectional rotation output, is widely applied and is particularly suitable for a reversing device of a sea-wave power generation device. The transmission device is low in gear transmission stage number and high in efficiency and has the characteristics of compact structure and high reliability, and high coaxiality of the input shaft and the output shaft can be kept. Compared with the prior art, the transmission device has the advantages that the device has a simple structure, is high in transmission efficiency and high in reliability and is easy to replace.

The invention provides a small-sized single-rotor unmanned helicopter speed change system, which comprises an engine, a gearbox and a tailing box, wherein the gearbox comprises a box base and a box upper cover; the box upper cover is arranged on the box base in a sealed way; an inner cavity is formed between the box upper cover and the box base; and the small-sized single-rotor unmanned helicopter speed change system also comprises a one-stage transmission mechanism, a tail rotor mechanism and a propeller mechanism. The small-sized single-rotor unmanned helicopter speed change system has the advantages that a transmission system only has two-stage transmission; and a tail rotor and a propeller obtain power from two-stage transmission. Compared with the three-stage transmission of the existing small-sized single-rotor unmanned helicopter speed change system, the small-sized single-rotor unmanned helicopter speed change system has the advantages that the transmission stages are reduced; the transmission noise is reduced; the transmission efficiency is improved; components are reduced; the weight is reduced; the load on the engine during the flight is reduced; the gearbox part only comprises one-stage transmission; during the operation, the vibration is reduced, so that the interference of the vibration on electronic equipment is reduced; and the flight safety and the flight reliability are guaranteed.

The invention discloses a magnetic suspension sliding automatic door. The magnetic suspension sliding automatic door comprises a door machine, a door body and a door pocket. The door machine is fixedly connected to a cross beam at the top of a door opening through a bolt, the door pocket is fixedly connected to a wall through a bolt, the top of the door pocket is movably connected with the bottomof the door machine, and the door machine comprises a power source, a controller, a left magnetic generator, a right magnetic generator, a door machine guide rail and a door machine permanent magnet module. The left magnetic generator is slidably connected to the left side of the top of the door body, the right magnetic generator is slidably connected to the right side of the top of the door body,and the door machine guide rail is fixedly connected to the wall through a bolt. The door machine of the magnetic suspension sliding automatic door directly drives the door body after electric energyis transformed into electromagnetic force, the energy efficiency ratio is high, and meanwhile, vibration and noises are reduced. The transmission levels of the door machine are decreased, the transmission efficiency is improved, and the problems that an existing automatic door is low in transmission efficiency, high in noise, complex in structure and large in occupied space, and the response timeof the door body operating in the forward and backward directions under an emergency situation is long are solved.

The invention relates to the improvement of a speed-increasing gearbox of a wind driven generator, which is characterized in that: a gear transmission has 3 to 4 stages, wherein the last stage is a planetary gear transmission; the former stages are all double-circular-arc cylinder herringbone spiral gear transmissions. Compared with the conventional generally-used speed-increasing gearbox which mainly uses the planetary gear transmission, because the low-speed stages (1 to 3 stages) adopt double-circular-arc cylinder herringbone spiral gears with high transmission efficiency and a subsequent stage adopts the planetary gear transmission, the advantages of the double-circular-arc cylinder herringbone spiral gear transmission and the planetary gear transmission are combined together, thus the effective one-off life is long, the transmission efficiency is high and the volume is small; and moreover, the double-circular-arc cylinder herringbone spiral gear is used for the speed-increasing gearbox of the wind driven generator for the first time.

The invention provides a scanning bed and a medical imaging device with the scanning bed. A motor can be arranged at a position away from a magnet, so that it is avoided that the motor affects the regularity of a magnetic field and the linearity of a gradient field; meanwhile, double-stage transmission in which an annular belt and an opening belt are matched is used for improving the transmissionaccuracy. The scanning bed includes a support device, a driving source, a bed plate, a middle plate, the opening belt and the annular belt, the middle plate is fixedly connected with the opening belt,the bed plate is fixedly connected with the annular belt, the front end of the opening belt is provided with a first driving wheel connected with the driving source, so that the first driving wheel drives the middle plate to do forward and backward motion relative to the support device, and the driving source is arranged at the back end; the annular belt sleeves the middle plate and is connectedwith a first connecting piece fixed to the support device, so that the annular belt does synchronous motion when the middle plate does forward and backward motion relative to the support device, and then the bed plate is driven to do homodromous forward and backward motion relative to the middle plate.

The invention relates to a chain feeding device. The chain feeding device comprises a feeding support. The feeding support comprises a left support body group and a right support body group. Each support body group comprises two oblique support bodies. Three chain wheel components are arranged on the feeding support and include the first chain wheel assembly, the second chain wheel assembly and the tensioning chain wheel assembly. The chain feeding device is simple in overall structure, small in transmission stage number, uniform in conveying, low in economic cost, easy to implement and convenient to use and popularize widely. By means of the device, multiple materials are placed into a feeding hopper in sequence, the chain feeding device automatically conveys the materials to a discharging outlet, the materials automatically roll to a next station, and manpower is saved; and as long as the materials are fed on time, uniform feeding can be kept under the condition that the motor set speed is fixed, and the working urgency sense of master workers is relieved.

A combing machine equipped with a rotary tong-basement consists of a frame, a motor, a gear-box and a combing part. The rotary tong-basement, arranged on the combing part and pivoted onto an eccentric transmission sleeve via a linkage bar, can move reciprocally on a slide bed on the frame. The eccentric transmission sleeve is installed on a disc on a eccentric driving shaft connected with the motor via a transmission mechanism. A triangular arm is arranged on the rotary tong-basement, with the upper tong plate at the front end of the triangular arm. Feeding rollers with bearings are installed on the tong-basement. A lower tong plate and top comb are fixed on the front end of the tong-basement. The upper tong plate is also pivoted with a connecting lever, of which the other end is pivoted on an eccentric calender sleeve, which is also arranged on an eccentric disc of an eccentric calender shaft that is connected with the motor via a transmission mechanism. The said machine has high speed, less vibration and noise, with high use ratio of resource and improved air flow condition.

The invention relates to a high-speed helicopter transmission system, which belongs to the field of space flight and aviation, comprises a main rotor transmission subsystem and a propeller transmission subsystem, adopts a pure bevel gear train in structure, and consists of a propeller horizontal reversing bevel gear pair, a main rotor vertical reversing bevel gear pair and a two-wing horizontal reversing bevel gear pair. Power is input through a helicopter main reduction shaft. Power is transmitted through two paths to drive the main rotor and the two-wing propellers respectively, wherein onepath is transmitted from the main reduction shaft to the propeller horizontal reversing bevel gear pair and the two-wing propeller bevel gear pair and then horizontally reverses through the two-wing propeller bevel gear pair to drive the propeller, and the other path is transmitted from the main reduction shaft to the main rotor vertical reversing bevel gear pair and then drives the main rotor torealize power output. While two functions of driving the main rotor wing by vertical reversing of power and driving the propeller by horizontal reversing are realized, the structure is compact, the weight is light, the transmission efficiency is high, the stability is good, the stable driving capability is realized, and the medium-high speed transmission is realized.

The invention provides an underwater verticality adjusting device for an ADCP (Acoustic Doppler Current Profiler) sensor. The underwater verticality adjusting device for an ADCP sensor comprises an inner ring assembly, an outer ring assembly, a cantilever mechanism assembly, a support assembly and a yoke, wherein the inner ring assembly is connected with the outer ring assembly through a pin; the outer ring assembly is connected with the support assembly through a pin; the cantilever mechanism assembly is connected with the outer ring assembly through an angle aluminium II; the angle aluminium II is in bolted connection with an outer support and an outer ring underframe; the yoke and the cantilever mechanism assembly are connected by adjusting a leading screw; relative to the outer ring assembly, the inner ring assembly is provided with a rotational degree of freedom; relative to the support assembly, the outer ring assembly is provided with a rotational degree of freedom; and therefore, relative to the support assembly, the sensor is provided with two rotational degrees of freedom, and the sensor can be adjusted according to the heeling condition of the inner and outer rings displayed by a sensor theodolite. The underwater verticality adjusting device for an ADCP sensor can solve the problem that an ADCP sensor cannot be arranged at the vertical position at any time because the measured data is not stable. The underwater verticality adjusting device for an ADCP sensor has the advantages of being high in stability, being high in accuracy and low in price.

The invention provides a circular knitting machine with an adjustable pressure plate, and relates to the textile device technical field; the circular knitting machine comprises the pressure plate, a large disc, a bull gear, a plurality of spacing mechanisms and an adjusting mechanism; the spacing mechanisms and the adjusting mechanism are arranged on the large disc; the bull gear is arranged on the large disc; the adjusting mechanism can adjust the pressure plate to move up and down with respect to the large disc; the spacing mechanisms can improve the precision of the pressure plate moving upand down; the adjusting mechanism comprises an adjusting gear wheel that is supported on the large disc; the bull gear is an annular gear; the bull gear outer periphery is engaged with the adjustinggear wheel; the bull gear inner periphery is in threaded fit with the pressure plate; the adjusting gear wheel is rotated so as to drive the bull gear to rotate, and the rotating bull gear can drive the pressure plate to move up and down via the threaded fit, thus adjusting the pressure plate to move up and down.

The invention discloses a fully suspended star wheel flexible transmission device, which comprises an integrated bevel gear meshing pair and a star wheel reduction device; the bevel gear meshing pair is connected with the motor; the star wheel reduction device is connected to the bevel gear meshing pair Coaxial connection, with an output shaft; two identical output shafts of the primary star gear reducer are suspended and connected to the two input shafts on the same side wall of the final stage reducer; two flexible support devices are respectively arranged on The two sides of the bottom of the final reducer realize a modular combination structure. Compared with the existing technology, the structure is compact, the transmission is more reasonable, and the flexible effect is better, which meets the flexible transmission requirements of large-scale equipment under special working conditions at low speed and heavy load. .

The invention discloses a collimator device capable of achieving automatic and rapid switching, a precise movement control method of the collimator device and a collimator recognition method.The collimator device comprises a transmission assembly and at least two sets of collimator assembling assemblies, the transmission assembly is connected with the collimator assembling assemblies, the transmission assembly at least comprises a rotating base assembly, and the rotating base assembly is connected with the collimator assembling assemblies; the collimator assembling assemblies comprise collimators, and the transmission assembly can achieve automatic switching of different collimator assembling assemblies through rotation action. According to the invention, through automatic rotation, automatic identification and automatic locking of the turntable mechanism, rapid switching of different collimators is realized, and the treatment head can rapidly switch the collimators according to a treatment plan in the treatment process. The defect that time is delayed when the collimator is replaced in the prior art is overcome, the collimator can be replaced without stopping treatment under most conditions, the repeated positioning precision of the device is high, safety and reliability of a system can be guaranteed through three-level locking protection, and damage of dark current to a patient can be reduced through the blind hole collimator.

The invention provides a worm-gear transmission system of a reel irrigator, and belongs to the field of agricultural water-saving irrigation. The worm-gear transmission system comprises a transmission body, a first-grade worm-gear power train, a second-grade fixed axis gear train, a third-grade fixed axis gear train, a manual recycling gear train and a gear shifting device. According to the worm-gear transmission system, through control of the position of a shifting fork in the gear shifting device, the worm-gear transmission system achieves gear 1, gear 2, neutral gear and manual recycling speed regulation modes; a brushless direct current motor replaces a water turbine to output power, so that the power performance of a prime mover is improved; and worm-gear transmission replaces parts of straight toothed spur gear transmission, so that the transmission ratio of the reel irrigator is increased, the transmission efficiency of the reel irrigator is improved, the size of a transmission is decreased, and the technical problems that under the low-speed operation condition of a traditional reel irrigator, the water turbine is insufficient in power performance and low in efficiency, a traditional transmission has multiple grades and is low in transmission ratio, large in size and low in efficiency, and the like are solved.

The invention relates to a tilting rotorcraft transmission system. The tilting rotorcraft transmission system comprises an engine output transmission unit, a pair of rotor speed reduction units symmetrically connected to the two sides of the engine output transmission unit, and a pair of tilting units symmetrically arranged on the two sides of the engine output transmission unit and connected with the rotor speed reduction units in a one-to-one correspondence mode. According to the transmission system, one engine is adopted for output, diversion is conducted through bevel gears, power is transmitted to the rotors on the two sides, concentrated transmission of power input in one direction and power output in two directions is achieved, the weight is greatly reduced, and the structural space is reduced; in addition, the tilting unit and the rotor wing speed reduction unit are placed in the same casing, the weight can be reduced, and the structural size can be reduced.

The invention provides a mechanical rectification mechanism, and relates to the technical field of mechanical design. A front cover and a rear cover are both of a two-step ladder disc type structure,and an input shaft is provided with a stepped shaft of a shaft shoulder. An inner ring of a first supporting bearing is in interference fit with the outer diameter of the input shaft, and an outer ring is in interference fit with the inner diameter of the first step of the front cover. An inner ring of a first one-way bearing cooperates with the middle of the input shaft through a key, and the rear end face of the first one-way bearing closely abuts against a front shaft shoulder. An inner ring of a second one-way bearing cooperates with the rear part of the shaft shoulder of the input shaft through a key. An outer ring of the second one-way bearing is connected with the inner diameter of the front end of a boss gear through a key. An inner ring of a fourth supporting bearing is in interference fit with the outer diameter of the middle of an output shaft, and the outer diameter is in interference fit with the inner diameter of the first step of the rear cover. A small gear with one side engaged with the boss gear is arranged on the front portion of a transmission shaft, the other side of the small gear is engaged with an inner gear ring, and the outer diameter of the inner gear ring is in interference fit with the inner diameter of a second supporting bearing. A connecting rod is of a special-shaped rod structure, and through holes in the two ends are fixedly connected with theinner gear ring through bolts.

The invention provides a scanning bed and medical imaging equipment with the scanning bed. The motor can be arranged at a position away from the magnet, thereby preventing the motor from affecting the uniformity of the magnetic field and the linearity of the gradient field. At the same time, an annular belt and an opening are used With matching two-stage transmission, the transmission precision is improved. The scanning bed of the present invention includes a support device, a driving source, a bed board, a middle board, an opening belt and an endless belt, the middle board is fixedly connected with the opening belt, the bed board is fixedly connected with the endless belt, and the front end of the opening belt is provided with a first connecting device connected with the driving source. a driving wheel, so that under the driving of the first driving wheel, the middle plate is driven to move back and forth relative to the supporting device, and the driving source is arranged at the rear end; the annular belt is sleeved on the middle plate, and is connected with the first connecting piece fixed with the supporting device, In order to move synchronously when the middle board moves back and forth relative to the supporting device, and then drive the bed board to move back and forth in the same direction relative to the middle board.

The invention relates to the improvement of a speed-increasing gearbox of a wind driven generator, which is characterized in that: a gear transmission has 3 to 4 stages, wherein the last stage is a planetary gear transmission; the former stages are all double-circular-arc cylinder herringbone spiral gear transmissions. Compared with the conventional generally-used speed-increasing gearbox which mainly uses the planetary gear transmission, because the low-speed stages (1 to 3 stages) adopt double-circular-arc cylinder herringbone spiral gears with high transmission efficiency and a subsequent stage adopts the planetary gear transmission, the advantages of the double-circular-arc cylinder herringbone spiral gear transmission and the planetary gear transmission are combined together, thus the effective one-off life is long, the transmission efficiency is high and the volume is small; and moreover, the double-circular-arc cylinder herringbone spiral gear is used for the speed-increasing gearbox of the wind driven generator for the first time.

The invention discloses a speed-variable transmission mechanism of a small single-rotor unmanned helicopter. The speed-variable transmission mechanism of the small single-rotor unmanned helicopter comprises an engine, a transmission box and a tail gear box, wherein the transmission box comprises a box base and a box upper cover; the box upper cover is sealed and mounted on the box base; an inner cavity is formed between the box upper cover and the box base; the speed-variable transmission mechanism also comprises a first-stage transmission mechanism, a tail rotor mechanism and a propeller mechanism. The speed-variable transmission mechanism of the small single-rotor unmanned helicopter has the advantages that a transmission system only has second-stage transmission, and tail rotors and propellers gain power from the second-stage transmission; compared with three-stage transmission of the speed-variable transmission mechanism of the small single-rotor unmanned helicopter in the prior art, the transmission grade number is reduced, the transmission noise is reduced, the transmission efficiency is improved, the parts are reduced, the weight is reduced, and the load of the engine during the flight is reduced. The transmission box part only comprises the first-stage transmission, so that the vibration during running is reduced; the interference of the vibration on electronic equipment is reduced; the safety and reliability of the flight is guaranteed.

A spindle mechanical device uniform in transmission is characterized by comprising a shaft sleeve, fixed tools, a mounting frame, first deep groove ball bearing assemblies, second deep groove ball bearing assemblies, first clamping blocks, plane bearing assemblies, second clamping blocks, a bearing sleeve, a gear, a spindle and a locking nut. The shaft sleeve is arranged below the spindle to be fixed, the first deep groove ball bearing assemblies, the second deep groove ball bearing assemblies and the plane bearing assemblies are sequentially arranged on the spindle, a limiting clamping block is arranged between the bearing assemblies, the bearing assemblies are sleeved with the bearing sleeve and fixed through the mounting frame and the fixed tools, the gear is arranged above the spindle, and the gear is fixed through the locking nut. The spindle mechanical device has the beneficial effects that the spindle mechanical device uniform in transmission is simple and reasonable in structure, the number of transmission levels is reduced, occupied space is small, the phenomena that energy consumption is high, and resource utilization is low are effectively avoided, the device is firm and stable, the transmission process is uniform and stable, and meanwhile the noise pollution is reduced.

The invention belongs to the technical field of engines, and particularly relates to an internal combustion engine and a transmission system.The internal combustion engine comprises a stator, a rotor, an ignition system and a fuel supply system.The rotor is rotatably arranged in the stator, a driving structure is arranged between the rotor and the stator, and the ignition end of the ignition system is fixed to the stator and extends to the driving structure; the driving structure does work and drives the rotor to rotate in the stator, and the fuel supply system penetrates through the stator to supply fuel to the driving structure. The transmission system comprises the internal combustion engine. According to the internal combustion engine and the transmission system, a combination of a piston and a crank connecting rod mechanism is replaced by the rotor, the whole engine structure is effectively simplified, the number of high-speed moving parts is reduced, the failure rate in the using process is reduced, the structure is simple, maintenance is simpler even if faults occur, and disassembly and assembly are convenient.