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

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 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 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.

An automatic change-over switching device comprises a base plate, a combined support, a motor, two circuit breakers, a mandrel, two release catches, two sliders, two plate springs, two indicator lamp microswitches, two motor stopping microswitches, a double-pole microswitch, a controller and a casing. The motor and the circuit breakers are all fixed on the combined support, so that transmission level of a transmission part can be effectively reduced, accumulated errors of the position of the transmission part caused by multi-level transmission during working can be reduced, the problem of misoperation caused accordingly can be solved, and normal production can be ensured. Further, a transmission operation mechanism on the automatic change-over switching device is reasonable in structure, and an operating member has accuracy in operating switch handles on the circuit breakers and is high in safety.

The invention provides a spindle structure. A first flange plate is arranged on a worktable base, the first flange plate is sequentially provided with a centering roller bearing, a first spacer, a second space, a first angular contact ball bearing, a third spacer, a fourth spacer and a second angular contact ball bearing, then the first flange plate is pressed with a second flange plate, the second flange plate is fixed to the first flange plate, and then a spindle is installed into the second flange plate; a fifth spacer is arranged on the upper portion of the spindle, then a gear is arranged in the fifth spacer, and a gland is used for pressing the gear and a spindle head; a belt wheel is arranged on the lower portion of the spindle and is pressed through the spacers and a fastening nut. The spindle structure is simple, ingenious, reasonable, uniform and stable in transmission process, low in noise, stable and reliable, and transmission series of the spindle are reduced.

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.

An automatic transfer switching device with a combined support comprises a bottom plate, the combined support, a motor, two breakers, a mandrel, a release catch, a controller and a casing. The combined support is installed on the surface of the bottom plate and composed of a lower overall support and a fixed part, the lower overall support is formed by a motor support and two switch fixing supports located on two sides of the motor support integrally, the fixed part is installed at the upper end of the motor support, the motor is installed in a motor installation hole, the two breakers are arranged on the bottom plate surface located on two sides of the motor support, the release catch is installed on an output shaft of the motor, the controller is installed on one side of the bottom plate surface, and the casing is covered outside the combined support. The automatic transfer switching device enables the motor and the breakers to be fixed on the combined support, transmission stages of a transmission member can be reduced, accumulative error of the position of the transmission member because of multistage transmission in an operating process can be reduced so as to avoid malfunction of the breakers caused by the accumulative error, and normal production can be guaranteed.

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 cloud platform camera. According to the cloud platform camera, a worm gear is adopted for being directly connected between a drive device and a driven part, the number of transmission levels between the drive device and the driven part is small, the transmission efficiency is high, other transmission parts are omitted, thus the size of a cloud platform is small, the structure is compact, the size of the overall cloud platform camera is small, and the integration degree is high.

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.