34results about How to "Improve deceleration effect" patented technology

The invention discloses an automatic workover rig, and relates to the technical field of workover equipment. Comprising a mast, a pipe rod conveyor and a wellhead platform, and the wellhead platform is provided with a first main body and a second main body; the mounting seats are annularly distributed and are connected into the first main body and the second main body in a limiting and sliding manner, and rollers are rotationally connected to the positions, close to the central axis of the first main body, of the mounting seats; the first main body and the second main body are provided with installation seats, the number of the guide seats is equal to that of the installation seats, the first main body and the second main body are jointly provided with guide grooves, the number of the guide grooves is equal to that of the installation seats, the guide seats slide in the adjacent guide grooves in a limited mode, and the guide seats are connected with friction pieces in a sealed and sliding mode. The rolling wheels are attached to the side wall of the oil pipe, the moving direction of the oil pipe is monitored, when the oil pipe falls, the friction piece is used for limiting the oil pipe, the oil pipe is prevented from falling continuously, and therefore the probability that the oil pipe falls into a well is reduced.

The invention discloses a drilling machine power head speed change structure which comprises a shell, a top plate is arranged at the top of the shell, a first speed change device is arranged on one side in the shell, a second speed change device is arranged on the other side in the shell, a speed change bin is arranged above the second speed change device, a stabilizing bin is arranged below the second speed change device, and a partition plate is arranged between the speed change bin and the stabilizing bin. A hydraulic motor is arranged in the center of the rotating sleeve, a sleeve gear is arranged on the outer side of the middle of the rotating sleeve in a surrounding mode, and hydraulic sleeves are arranged at the upper end and the lower end of the rotating sleeve. The two-stage speed change structure has the beneficial effects that torque can be superposed or reduced through relative rotation, the torque change range is enlarged, meanwhile, speed change is more uniform and reliable through cooperation of the stepless speed change type structure and the hydraulic motor, meanwhile, stability of the output torque of the motor is guaranteed, and the service life of the motor is prolonged. The drilling machine has the advantages of a motor drilling machine and a hydraulic drilling machine.

The present invention relates to a turntable, wherein a through hole is provided at the center of the rotating table surface of the turntable as a seat hole, and a base is connected to the rotating table surface through a main shaft and a bearing group arranged in the seat hole, and the main shaft is assembled in the center hole of the base, and a secondary plane thrust bearing is arranged on the base outside the main shaft, and one end face of the end faces at both ends of the rotating table surface is a working plane, and the other end face is supported by the secondary plane thrust bearing, and a first outer cylindrical step is also arranged between the end faces at both ends of the rotating table surface, and a main support body is arranged on the base at the periphery of the secondary plane thrust bearing, and a main plane thrust bearing is assembled between the main support body and the first outer cylindrical step, and three or more deceleration grooves arranged in a central symmetrical manner are opened on the large end ring surface of the first outer cylindrical step. The double slewing support system of the turntable has a strong load capacity, a simple structure, and is easy to manufacture, process, transport and install, and is particularly suitable for application under large diameter and heavy load conditions.

The invention provides a composite brake parachute for an aircraft, and belongs to the technical field of aircraft landing deceleration, the composite brake parachute specifically comprises a first parachute body, a plurality of second parachute bodies, a first connecting rope and a plurality of second connecting ropes, the first parachute body is connected with the tail of the aircraft through the first connecting rope, and the second parachute bodies are mutually connected through the second connecting ropes; the umbrella cloth of the first umbrella body is connected with the umbrella rope of the second umbrella body through a second connecting rope. According to the treatment scheme, the requirement for the structural strength of a single brake parachute material is lowered while the speed reduction effect and reliability of the brake parachute are improved.

The present invention relates to the technical field of lifting equipment, and specifically provides a lifting device for containers, comprising two slide rails arranged parallel to each other, a gantry is slidably arranged on the slide rails, a limiting mechanism is arranged at the end of the slide rails, the limiting mechanism comprises a first deceleration block and a second deceleration block, the first deceleration block is elastically and telescopically arranged on the gantry, and the second deceleration block is elastically arranged at the end of the slide rail, and multi-stage deceleration of the gantry is achieved by arranging the first deceleration block and the second deceleration block, so that the gantry can gradually slow down when it stalls in windy weather, which can effectively reduce the inertia force, thereby reducing the damage of the gantry to the track, and at the same time can effectively prevent the gantry from leaving the slide rail, and clamping components are arranged on both sides of the second deceleration block to increase the friction of the second deceleration block, thereby improving the deceleration effect of the second deceleration block, and can more efficiently stop the gantry.

The utility model discloses a tableted candy configuration device, which relates to the technical field of tableted candy production ingredients and comprises a bottom plate, a support frame is fixedly connected to the outer wall of the top of the bottom plate, a bearing seat is fixedly connected to the outer wall of the top of the support frame, and a fixing column is fixedly connected to the inner wall of the circumference of the bearing seat. A tank body is fixedly connected to the end, away from the bearing seat, of the fixing column, a driving assembly for driving the tank body to rotate is arranged at the top of the bottom plate, and a stirring assembly for improving the material mixing efficiency is arranged in the tank body. According to the utility model, various raw materials with different properties can be fully and uniformly mixed, so that the mixing effect of candy materials is effectively improved, the quality of subsequent tabletting and forming products is improved, and the problems of non-uniform taste, non-uniform color and the like are reduced.

The application discloses a panel laminating device for electronic display screen production and relates to the technical field of display screen lamination.The panel laminating device comprises a base, a vacuum laminating machine is fixedly installed at the top of the base, a pneumatic cylinder driving device is arranged in the vacuum laminating machine, a laminating pressing plate is fixedly installed at the output end of the pneumatic cylinder driving device, a linear driving module is fixedly installed at the top of the base, and a carrying sliding table is fixedly installed at the moving end of the linear driving module.The panel laminating device can complete the distance calibration and positioning of four groups of display screen panels at one time through the right-angle positioning function of the cross-shaped baffle, can adapt to the synchronous lamination operation demand of multiple groups of display screen panels, and can shorten the time consumption of single-batch positioning.

The invention discloses magnetic high-energy slump mass impact test equipment based on Ampere force acceleration. The magnetic high-energy slump mass impact test equipment comprises a shell, a left power-on guide rail, a carrier platform, a carrying box, acceleration rollers, a carrying box position sensor, a carrying box power supply guide rail and a right power-on guide rail. The electrified guide rail is divided into an accelerating section, a decelerating section and an insulating part located between the accelerating section and the decelerating section. And during acceleration, a conductive brush is adopted for flexible connection, so that a higher final release speed is realized. During speed reduction, power is cut off through the insulation part, then electromagnetic speed reduction is achieved through reverse power-on, and the length of the speed reduction section is shortened. Through the magnetic field generated by the coil on the inner wall of the object carrying box, the test body is in a suspension state in the object carrying box in a Lorentz force mode, it is guaranteed that the test body does not make contact with the object carrying box in the acceleration process, non-contact lossless carrying of the test body is achieved, the original shape and characteristics of the test body are maintained, and the test accuracy is improved. And the quick release of the test body is realized.

The utility model relates to the technical field of hydroelectric generators, and discloses a hydropower station intelligent adjusting type water delivery power generation device which comprises an intelligent generator body, the intelligent generator body comprises a water turbine and a rotating flywheel, the water turbine is arranged on the upper side wall face of the intelligent generator, and a transmission rotating column capable of rotating is rotationally arranged on the front side wall face of the water turbine. The rotating flywheel is fixedly installed on the outer wall of the transmission rotating column, and a connecting box body is fixedly installed on the upper side wall face of the intelligent generator. In the using process, when water supply of the water turbine is cut off, in order to stop the rotating flywheel, the movable connecting plate moves forwards through the position adjusting mechanism, the transmission sleeve moves forwards along with the movable connecting plate, the second friction plate begins to approach the first friction plate, and finally the second friction plate makes contact with the first friction plate. Friction force generated between the first friction plate and the second friction plate can be used for reducing and braking the rotating flywheel.

The invention discloses an annular coaxial powder feeding head for underwater laser cladding. The annular coaxial powder feeding head comprises a nozzle top, a nozzle middle part, a nozzle lower part, a drainage upper part, a drainage middle part and a drainage lower part which are sequentially mounted and connected from top to bottom, an upper laser cavity is formed in the middle hollow part of the top of the nozzle; a plurality of powder feeding screw holes are formed in the upper surface of the nozzle top and penetrate through the nozzle top and the nozzle middle to form a powder feeding channel, and a first air curtain / water curtain flow channel is formed in the nozzle top; the nozzle lower part and the nozzle middle part are similar in structure, the middle of the drainage upper part is a laser powder cavity, the upper surface of the drainage upper part is provided with two third air curtain / water curtain flow channels which are connected with the first air curtain / water curtain flow channels in a penetrating manner, and the drainage middle part and the drainage lower part are similar in structure; a water curtain, an air curtain structure and a nozzle are combined, an expanding protection curtain is formed at the bottom, the protection range is larger, and meanwhile the influence on powder feeding airflow and powder flow is smaller.

The utility model relates to the field of high-magnetic-resistance permanent magnet synchronous rotors, and discloses a high-magnetic-resistance permanent magnet synchronous rotor structure of a new energy automobile driving motor, which comprises an outer shell and a magnet, and is characterized in that the inner wall of the outer shell is rotatably provided with a rotating shaft, and the surface of the rotating shaft is fixedly connected with a plurality of rotor iron cores; the center of the rotor core and the center of the rotating shaft are located on the same straight line, the two ends of the magnet are provided with electromagnetic blocks, the surfaces of the electromagnetic blocks are connected with a connecting frame in a clamped mode, one end of the connecting frame is fixedly installed on the inner wall of the outer shell, and the surface of the magnet is fixedly connected with the inner wall of the rotating shaft; according to the invention, the magnet is installed on the surface of the rotating shaft, the two ends of the magnet are provided with the electromagnetic blocks, and the electromagnetic blocks are installed on the inner wall of the housing through the connecting frame, so that after the rotating shaft stops rotating, the electromagnetic blocks are electrified to generate magnetic force to attract one end of the magnet on the surface of the rotating shaft, thereby reducing the rotation speed of the rotor core. The stopping speed of the rotating shaft is effectively accelerated.

The utility model provides privacy pants, and belongs to the technical field of medical supplies. Comprising arc plates, placing bags are arranged outside trouser legs, placing holes are formed in the placing bags, the arc plates are installed in the placing holes, the two arc plates are installed on the inner sides and the outer sides of the trouser legs respectively, arc clamping plates are installed in circular grooves of the arc plates, and the arc clamping plates are fixedly connected into the circular grooves of the arc plates in a sleeved mode. A plurality of fixing gaskets are installed on the inner walls of the arc-shaped clamping plates, and a plurality of anti-skid protruding blocks are installed on the outer walls of the fixing gaskets. By arranging the arc plates, the arc-shaped clamping plates and the fixing gaskets, when the arc plates are fixed into the containing holes formed in the trouser legs, the catheter can be fixed into a speed reduction cavity formed by the arc-shaped clamping plates in the two arc plates, and meanwhile the catheter can be clamped and fixed through the fixing gaskets installed in the arc-shaped clamping plates; and the problem that the catheter falls off when being pulled can be avoided.

The utility model belongs to the technical field of medical equipment, and particularly relates to a whole respirator air passage. The breathing machine whole machine air channel comprises a main machine and a humidifying heater, a humidifying air channel is formed in the humidifying heater, the main machine comprises a turbofan, a fixing shell and a speed reducing part, the fixing shell comprises a top shell and a bottom shell, and the top shell covers the bottom shell to define a containing cavity and an air inlet channel; the turbofan is arranged in the containing cavity, an air outlet channel is formed in the top shell, the turbofan is provided with an air flow channel, and the air inlet channel, the air flow channel, the air outlet channel and the humidifying air channel are sequentially communicated; the speed reduction part is installed in the air inlet channel and comprises a plurality of streaming pieces distributed at intervals and partition plates connected between every two adjacent streaming pieces, a noise reduction channel allowing air to circulate is formed between every two adjacent streaming pieces, and the partition plates are located in the noise reduction channel and divide the noise reduction channel into two branch channels; a silencing air inlet is formed in the first end of each branch channel, and a silencing air outlet is formed in the second end of each branch channel.

The utility model discloses a barrier gate for an intelligent parking system, relates to the technical field of parking barrier gates, and solves the problems that a gate rod is not blocked by an automobile and can be driven by a torsion spring to rotate and reset, but the gate rod collides with a protective cover due to inertia, so that secondary damage of the gate rod is possibly caused. A brake bar is mounted on the inner side of the mounting seat, a mounting shaft penetrates through the inside of the brake bar, the brake bar is rotationally connected with the mounting seat through the mounting shaft, two symmetrically distributed torsion springs fixedly sleeve the outer side of the mounting shaft, and the brake bar rotating and resetting device further comprises a speed reduction structure used for reducing the speed of rotating and resetting of the brake bar; by installing the speed reduction structure, the brake bar can be decelerated, the brake bar is prevented from impacting the installation base due to inertia, secondary damage to the brake bar is prevented, the resistance of the cam moving on the friction plate can be further increased by arranging the inclined tooth grooves in the friction plate, and therefore the speed reduction effect of the speed reduction structure can be further improved.

The utility model relates to a fan speed reducer which comprises a speed reducing mechanism and an installation base, the speed reducing mechanism is installed on the installation base, and the speed reducing mechanism comprises a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a first straight gear, a second straight gear, a third straight gear, a fourth straight gear, a first bevel gear and a second bevel gear. The first rotating shaft is fixedly sleeved with the first straight gear, the second rotating shaft is fixedly sleeved with the second straight gear, the third rotating shaft is fixedly sleeved with the fourth straight gear, the third rotating shaft is fixedly sleeved with the first bevel gear, the fourth rotating shaft is fixedly sleeved with the second bevel gear, and the fourth rotating shaft is fixedly sleeved with the third bevel gear. Wherein the first straight gear is meshed with the second straight gear, the third straight gear is meshed with the fourth straight gear, and the first bevel gear is meshed with the second bevel gear.

The utility model discloses a material conveying turning structure of an aluminum material extruding machine, which relates to the field of profile processing, and adopts the technical scheme that the material conveying turning structure comprises a base and a baffle plate positioned on the top surface of one side of the base, the top surface of the base is connected with a speed brake in a sliding manner, one side of the speed brake close to the baffle plate is fixedly connected with a sliding rod, and magnetic blocks are linearly arrayed on the sliding rod; the baffle is fixedly connected with a copper ring, the sliding rod penetrates through the copper ring, and the magnetic block can penetrate through the copper ring. According to the utility model, the speed reducing plate abuts against the raw material and pushes the sliding rod to slide relative to the copper ring, when the magnet passes through the copper ring, the magnet is subjected to resistance based on electromagnetic induction and Lenz's law, so that the movement of the speed reducing plate and the raw material is slowed down, the kinetic energy is smaller when the raw material is contacted with the baffle plate, and the higher the raw material rolling speed is, the more obvious the speed reducing effect is; the surface of the raw material is prevented from generating flaws to influence the quality of the aluminum profile.

This invention relates to a spoiler device for automotive wind tunnel testing. The spoiler device is installed in an automotive wind tunnel testing apparatus, which includes a wheel rotation unit and a moving belt unit. The wheel rotation unit includes a working belt and a wheel rotation unit chamber. The working belt is installed at one end of the wheel rotation unit chamber, and a gap exists between the working belt and the wheel rotation unit chamber. The spoiler device includes a spoiler installed within the gap between the working belt and the wheel rotation unit chamber. Compared with existing technologies, this invention has advantages such as reducing the influence of the aerodynamic characteristics of the wheel rotation unit on the surrounding flow field by installing a spoiler between the working belt and the wheel rotation unit chamber, thereby reducing aerodynamic drag errors during testing; the spoiler can be a strip plate, a brush, or an air pipe, adapting to the needs of different wheel rotation unit rotation speeds and shapes.

The invention discloses a planetary harmonic reducer and a middle motor using the planetary harmonic reducer. The planetary harmonic reducer comprises a wave generator, a flexible gear, an output flange plate, a crossed roller bearing, a rigid gear, a needle bearing, a sun gear, a planetary gear, a planetary gear carrier and a planetary gear ring. The planetary harmonic reducer is arranged, output power of a motor rotor is transmitted to the wave generator through the center gear, the planetary gear and the planetary gear carrier, the wave generator rotates and drives the flexible gear to rotate in a speed reduction mode, and therefore speed reduction is achieved, and compared with an existing wave generator, the double-speed-reduction mode is adopted, torque is increased, and the speed reduction effect is better.

The invention relates to the technical field of four-wheel drive farmland management machines, and discloses a gearbox structure applied to a micro four-wheel drive farmland management machine, comprising an upper case body and a lower case body, wherein the upper case body is connected to the lower case body, and a clutch assembly is arranged in the upper case body, a bevel gear shaft is rotatably supported in the upper case body, a bevel gear combination is splined on two shafts, the bevel gear combination is transmitted to three shafts and three teeth of three shafts in the lower case body, power is transmitted from three shafts and three teeth to three shafts, large double-linked teeth for travel on three shafts are respectively combined with two teeth of four shafts and one tooth of four shafts on four shafts, so as to realize the first gear and second gear shifting function of travel, large double-linked teeth for travel are combined with six large double-linked teeth of six shafts, and a reverse gear function is realized through transmission of one tooth of four shafts, and when the double-linked teeth of four shafts are respectively combined with one tooth of three shafts and three teeth of three shafts, the third gear and fourth gear shifting function of travel is realized, and the scheme has a simple structure, can provide multiple gear selections, has obvious deceleration effect, has high clutch transmission efficiency, low power consumption and long service life.

The invention discloses a new energy automobile hybrid power output transmission system which comprises a frame, a front axle, a rear axle, wheels, a transmission shaft and a connecting shaft, the frame is fixedly connected with an engine, the engine is in transmission connection with a gearbox through a clutch, the tail end of the gearbox is movably connected with a transmission main shaft used for transmitting power, and the transmission main shaft is fixedly connected with the front axle. A speed change device for changing the speed of the transmission main shaft is arranged at the bottom of the transmission main shaft; through a pneumatic motor of an acceleration mechanism, when a vehicle accelerates, especially shifts gears, an electric control system in the vehicle accurately controls the air inflow to adjust the rotating speed and the torque according to the rotating speed, the gears and other information of an engine, and when the power connection of the engine at the low gear and the rising gear is delayed, the pneumatic motor can rapidly provide the strong torque which is transmitted to a transmission main shaft through a transmission assembly; the power gap is effectively filled, the vehicle jerking is avoided, the acceleration process is stable, and the driving comfort is remarkably improved.

The utility model discloses a light fixing type automobile hub, relates to the technical field of automobile accessories, and provides the following scheme that the light fixing type automobile hub comprises a rotating rod and a fixing mechanism arranged outside the rotating rod, and the fixing mechanism comprises a fixing assembly and other assemblies. The hub outer ring is supported through the first supporting rods, the second supporting rods and the third supporting rods, so that the hub outer ring can stably keep running, due to the fact that the two sets of first supporting rods, second supporting rods and third supporting rods are arranged, the hub outer ring can be more effectively supported, meanwhile, the appearance of the third supporting rods and the hub outer ring is triangular, and therefore the hub outer ring can be more stably supported. Compared with the prior art, the hub outer ring has the advantages that the appearance of the hub outer ring can be better kept, the impact of external force on the hub outer ring is reduced, the hub outer ring is more stable, the service life of the hub is prolonged, and the hub is very light due to the fact that the hub outer ring is internally provided with a large number of hollowed-out parts, and better acceleration and deceleration performance and turning control performance can be brought to an automobile.

The present invention discloses a magnetic high-energy collapse and sliding body impact testing device based on Ampere force acceleration, including a shell, a left energized rail, a carrier platform, a loading box, an acceleration roller, a loading box position sensor, a loading box power supply rail and a right energized rail. The energized rail of the present invention is divided into an acceleration section, a deceleration section and an insulating part located therebetween. During acceleration, a conductive brush is used for flexible connection to achieve a higher final release speed. During deceleration, the power is first cut off through the insulating part, and then electromagnetic deceleration is achieved by reverse energization, thereby shortening the length of the deceleration section. The present invention uses the magnetic field generated by the coil on the inner wall of the loading box and the Lorentz force to place the test body in a suspended state in the loading box, thereby ensuring that the test body does not contact the loading box during the acceleration process, achieving contactless and lossless transportation of the test body, maintaining the original shape and characteristics of the test body, and achieving rapid release of the test body.

The present invention discloses a driving axle of an electric baggage conveyor belt vehicle for an airport, comprising a box shell, a left half shaft and a right half shaft, wherein the left half shaft is movably mounted on one side of the box shell, and the right half shaft is movably mounted on the other side of the box shell, a right shaft sleeve is fixedly mounted on the middle position of the outer surface of one end of the box shell, the right shaft sleeve is fixedly sleeved on the outer surface of the right half shaft, the box shell and the right half shaft are butt-jointed and fixed by the right shaft sleeve, a left shaft sleeve is fixedly mounted on the middle position of the outer surface of the other end of the box shell, and the left shaft sleeve is fixedly sleeved on the outer surface of the left half shaft; the driving axle of an electric baggage conveyor belt vehicle for an airport of the present invention makes the structure of the driving axle more compact, so that the electric baggage conveyor belt vehicle installed with the driving axle can be applied to narrow places, thereby effectively improving the trafficability of the vehicle, and at the same time making the installation and disassembly operations of the driving axle more convenient, thereby improving its stability.

The invention discloses a linear actuator which comprises a motor, a tubular telescopic component and a force transmission chain. The force transmission chain is arranged to transmit power of the motor to the tubular telescopic component so as to drive the tubular telescopic component to do linear motion. The first force transmission chain comprises a planet wheel speed reducing mechanism in transmission connection with the output end of the motor, a second force transmission chain in transmission connection with the first force transmission chain, and a third force transmission chain in transmission connection with the second force transmission chain; the third force transmission chain comprises a lead screw and a transmission nut which is in threaded fit with the lead screw, and the transmission nut is connected with the tubular telescopic component; the force transmission direction of the first force transmission chain intersects with the force transmission direction of the second force transmission chain, and the force transmission direction of the second force transmission chain intersects with the force transmission direction of the third force transmission chain. The situation that the output shaft of the motor is perpendicular to the lead screw is avoided, the overall size of the linear actuator is reduced, and transportation and installation are convenient.

The utility model relates to the technical field of intelligent lock mechanisms, in particular to an intelligent lock speed reducing mechanism which comprises an upper shell and a lower shell, a driving motor is arranged on one side of the lower shell, a worm is fixedly connected to one end of the driving motor and located in the lower shell, a transmission mechanism and a rotating rod are arranged in the lower shell, and the upper shell and the lower shell are fixedly connected with the worm. The driving motor drives the worm to rotate, finally the transmission mechanism drives the execution gear and the rotating rod to rotate, an external pin shaft can penetrate through the rotating rod at the opening, and the outer surface of the rotating rod is fixedly connected with an execution gear, and the worm drives the execution gear and the rotating rod to rotate through the transmission mechanism. The rotating rod drives a pin shaft in an external intelligent lock to rotate, the pin shaft drives a lock cylinder of the intelligent lock to rotate, the intelligent lock is opened and closed, meanwhile, the transmission mechanism conducts three times of speed reduction in the transmission process, the better speed reduction effect is achieved, and the rotating angle of the rotating rod is more precise and controllable.

This utility model relates to a labyrinth-type anechoic return air chamber suitable for HVAC systems, comprising: an anechoic chamber with an air inlet and an air outlet; multiple sound-absorbing baffles are arranged on the inner wall of the anechoic chamber, and the multiple sound-absorbing baffles are staggered to form a labyrinth channel for airflow; the air inlet and the air outlet are respectively connected to the two ends of the labyrinth channel; wherein, an arc-shaped air guide plate connected to the inner wall of the anechoic chamber is provided at each corner of the labyrinth channel. This application uses multiple sound-absorbing baffles in the anechoic chamber to form a labyrinth channel. The tortuous path of the labyrinth channel causes noise waves to be reflected multiple times, thereby effectively reducing noise. Furthermore, the longer anechoic path of the labyrinth channel has a better noise reduction effect and a deceleration effect on the airflow. By setting the arc-shaped air guide plate, the airflow smoothly turns, reducing airflow pressure loss and reducing eddies generated at the turns of the labyrinth channel, thus reducing the noise generated by eddies and ensuring the noise reduction effect.

This invention relates to a packaging box printing apparatus, specifically to the field of packaging box printing technology. It includes an offset printing unit, a secondary printing unit, and a connecting device, arranged sequentially from back to front. The offset printing unit includes an offset unloading conveyor belt, the secondary printing unit includes a secondary printing drive belt, and the connecting device includes a diversion mechanism and multiple transfer conveyors. One end of the diversion mechanism connects to the offset unloading conveyor belt, and the other end connects to each of the transfer conveyors. Each transfer conveyor connects to the secondary printing drive belt of a secondary printing unit. This application utilizes a connecting device to link the offset printing unit and the secondary printing unit, merging the offset printing and inkjet printing processes together. This eliminates the cumbersome operation of unloading, transferring, and reloading after offset printing, thus improving production efficiency.

The utility model provides a kind of concrete delivery pipe, including delivery pipe body, still including the first connecting flange of its setting, and the second connecting flange of its bottom end setting, first connecting flange and second connecting flange are connected to two delivery pipe bodies by cooperation;The inner wall of the delivery pipe body is provided with speed reduction rib, the speed reduction rib is spirally extended downward with the axis of delivery pipe body as axis, it is extended from the top end of delivery pipe body to the bottom end of delivery pipe body along the axis direction of delivery pipe body, and it is guided that concrete cyclone slows down;Quick positioning structure is provided on the first connecting flange and the second connecting flange, the quick positioning structure includes the protrusion of the first connecting flange bottom end face setting, and the recess of the several of second connecting flange top setting, and the first connecting flange and the second connecting flange are provided with the fixed through-hole, protrusion is aligned recess when fixed through-hole is automatically aligned, and first connecting flange and second connecting flange are fixed by bolt nut.

The invention discloses a middle motor with a planetary harmonic reducer. The planetary harmonic reducer comprises a wave generator, a flexible gear, an output flange plate, a crossed roller bearing, a rigid gear, a needle bearing, a sun gear, a planetary gear, a planetary gear carrier and a planetary gear ring. The planetary speed reducing mechanism can directly drive the harmonic speed reducing mechanism, the movable ring is driven by the pushing mechanism to be pushed towards the left side, at the moment, the movable ring is not engaged and locked with the planetary gear ring, and meanwhile, the arc-shaped connecting rod drives the locking block to lock rotating shaft locking teeth of the three planetary gears; at the moment, the sun gear, the planetary gear, the planetary gear carrier and the planetary gear ring do not rotate mutually, the motor rotor directly drives the wave generator, power directly drives the main shaft through the harmonic reducer, and therefore the medium reduction ratio is obtained, compared with an existing middle motor, the middle motor can flexibly select the appropriate output reduction ratio, and the service life of the motor is prolonged.

The utility model relates to a reduction gearbox of an electric dental wrench, which comprises a barrel, a connecting nut, an output connector, an outer gear ring, a first planet carrier, a second planet carrier, a plurality of first planet gears, a plurality of second planet gears, a sun gear, an output shaft and an output bevel gear. The multiple first planetary gears are rotationally arranged on the bottom face of the first planet carrier and meshed with teeth of the outer gear ring at the same time, the sun gear is fixedly connected to the top face of the first planet carrier, the multiple second planetary gears are rotationally arranged on the bottom face of the second planet carrier and meshed with the multiple second planetary gears at the same time, and the sun gear is fixedly connected to the top face of the second planet carrier. The multiple second planetary gears are meshed with teeth of the outer gear ring at the same time, the inner end of the output shaft is fixedly connected with the second planet carrier, the outer end of the output shaft extends out of the output connector, and the output bevel gear is arranged at the outer end of the output shaft. The two-layer planetary speed reducing mechanism is adopted, and the speed reducing effect is good.