69results about How to "Easy to change speed" patented technology

The invention discloses a stepless speed change mechanism and an automobile. The stepless speed change mechanism comprises a driving wheel disc and a pressure adjusting wheel disc which are parallel to each other; at least one speed change roller is arranged between the driving wheel disc and the pressure adjusting wheel disc; the axis of the speed change roller is parallel to the driving wheel disc and points to the axis of the driving wheel disc; contact surfaces of the driving wheel disc, the pressure adjusting wheel disc and the speed change roller are provided with friction layers; the speed change roller is provided with a position adjusting device which can adjust a distance from the center of the speed change roller to the center of the driving wheel disc; and the pressure adjusting wheel disc is provided with a pressure adjusting device to adjust the pressure applied to the speed change roller by the pressure adjusting wheel disc. The stepless speed change mechanism can realize stepless speed change and improve the torque transmitting capacity.

The invention discloses a hand blender with a body which can be connected with different stirring tools. The body includes a motor with an output shaft, a deceleration component and a plurality of output connectors. The speed control knob and the safety switch, starting switch which control the moving of the motor are set up of the body. The control circuit includes a half speed control lever and a reverse control lever which can be moved by the corresponding stirring tools. The hand blender can connected with different stirring tools and output different kinds of speeds. It is more convenient and safe.

The invention discloses a chain sheet structure. Combining portions are arranged at the two ends of the chain sheet structure. Each combining portion is provided with an axial hole. The inner side face between the two combining portions is provided with a waist portion which relatively swells towards the outer side face and is thinned in a concaved mode. A circular arc connecting face is arranged at the connection position between the waist portion and each combining portion. The inner edge and the outer edge of each connecting face are provided with two circular arc lines, wherein the two circular arc lines are in the state that two circular arcs are arranged in a spaced mode. Each connecting face forms an outward-expanding guide-in face along the two edges of a chain sheet. One or more protruding blocks are arranged between the two connecting faces. The two sides of the waist portion are provided with opening portions which are relatively inclined. The openings are located between the two guide-in faces. By means of the two protruding blocks, meshing speed changing of chain teeth of a tooth disc can be rapidly guided, and chain transmission is stabilized.

The present invention relates to a roller board, and more particularly, to a pedal-driven roller board that converts a reciprocating motion of pedals formed on the board into a rotational motion to drive a gear, so that a user can drive the board without kicking the ground. Furthermore, the pedal-driven roller board includes a derailleur, so that a user can conveniently control the speed of the pedal-driven roller board. Moreover, a user can develop and strengthen his / her muscles by pedaling the pedal-driven roller board. To this end, a pedal-driven roller board according to the present invention includes: a handle disposed at the front side of a board to steer a front wheel; a rear wheel at the rear side of the board; and two pedals formed on the top surface of the board to drive the rear wheel. Further, the pedal-driven roller board includes: a link having an end hinged to the bottom surface of a pedal; a driving gear formed on an end of a crankshaft connected through a shaft to the other end of the link to convert a reciprocating motion of the pedal into a rotational motion; a clutch gear engaged with the driving gear to rotate, and selectively connected to one of either a first speed gear or a second speed gear to rotate same; a first connecting gear and a second connecting gear, which rotatably engage with the first speed gear and the second speed gear, respectively, and are installed on an end of a connecting shaft; a transmission gear installed on both ends of the connecting shaft and rotated by torque transmitted through the connecting shaft from the first and second connecting gears; and a rotation gear engaging with the transmission gear to rotate, and connected to the rear wheel through a rotation shaft to transmit the torque from the transmission gear to the rear wheel.

The invention relates to the technical field of woodworking machinery, in particular to a single-spindle woodworking milling machine with a high-speed spindle. The milling machine comprises a machine frame, a workbench, a milling cutter device, a milling cutter lifting device and a motor, wherein the workbench and the machine frame are fixedly connected; a control device is arranged on the machine frame; the milling cutter device comprises a spindle, a milling cutter, a cutter assembling nut, a flat hole sleeve and a cutter pressing screw; and the milling cutter lifting device is composed of a lifting screw, a sliding plate, a sliding plate base, a lifting hand wheel, a lifting nut, a locking device, a worm gear, a worm, a bearing and a bearing base. The milling machine is characterized in that the shaft of the motor extends and is connected with the spindle into a whole; the lower end of the cutter assembling nut is fixedly connected with an upper end cover of the motor; the motor and the sliding plate are fixedly connected; the milling cutter is directly driven by the motor; and parts, such as a motor plate, a transmission belt, a motor wheel, a spindle wheel and the like, are saved, thus the manufacturing cost of a machine tool is effectively lowered, the integral performance of the machine tool is steady, the power consumption of the motor is reduced, and the milling machine is steady to operate.

A device for stretching webs of material transversely to a travel direction thereof, includes at least one rotary stretcher extending transversely to the travel direction of the web of material. The stretcher is composed of at least two round tubes which are aligned axially with each other and are supported by ball-and-socket joints on links. The links are mounted adjustably on a base frame.

The invention discloses a long-conical and rolling-conical type stepless variable drive mechanism which comprises a first long-conical roller, a second long-conical roller and an intermediate rolling-conical wheel; a first conical surface and a second conical surface are arranged on the intermediate rolling-conical wheel; the first conical surface is in contact drive with the first long-conical roller; the second conical surface is in contact drive with the second long-conical roller; the contact positions of the intermediate rolling-conical wheel on two long-conical rollers can be adjusted, therefore, the working radiuses of the two long-conical rollers can be continuously changed, and as a result, the stepless variable drive can be achieved. According to the long-conical and rolling-conical type stepless variable drive mechanism, the geometrical slippage is zero under the optimal drive, so that the geometrical slippage of the conical wheel type long-conical and rolling-conical type stepless variable drive mechanism can be effectively reduced, and the drive efficiency and power can be increased. The long-conical and rolling-conical type stepless variable drive mechanism is applicable to various fields such as the vehicle field, the ship field and the mechanical drive field.

The invention relates to a bicycle inner transmission and a manufacture method thereof. The transmission mainly comprises a fixed star frame, front star wheels, back star wheels, a sun wheel, a pawl ring, a shell cylinder, a moving star frame, an active cylinder, a double gear ring, an eight gear ring, and a gear shifting cylinder. a slow gear, a neutral gear and a fast gear are arranged. the front star wheels and the back star wheels are integrated wheel shaft members; the fixed star frame is a fixed part and is also used as a stationary sun wheel, and there are six front star wheels which are engaged with three back star wheels inside the frame; the sun wheel is engaged with the back star wheels and is provided with the pawl ring; the moving star frame is provided with four front star wheels and a pawl ring; the pawl ring is provided with a pawl milled with clutch teeth; the double gear ring is dynamically engaged with the eight gear ring for contrarotation gear shift and forward rotation transmission; the double gear ring is sleeved by the gear shifting cylinder to form an integrated part; the eight gear ring is sleeved by the active cylinder to form an integrated part and then is provided with a common chain wheel; power is transferred from the active cylinder and the eight gear ring to drive the double gear ring to the pawl ring through the gear shifting cylinder, and if the gear shifting cylinder is engaged with the sun wheel pawl ring, it is the slow gear; if the gear shifting cylinder is engaged with the moving star frame pawl ring, it is the fast gear; non engagement is the neutral gear.

The invention relates to a high-speed frame stranding machine. A stranding cage gearbox is internally provided with a rotational output shaft, a switching shaft, a transition shaft and an input shaft,the output shaft is provided with a third large gear and a fourth small gear; the switching shaft is provided with a first engaging gear, a second large gear and a clutch wheel; the switching shaft is provided with the third small gear; the transition wheel is provided with a second small gear and a first large gear; the input shaft is provided with a second engaging wheel, and the second engaging wheel is engaged with the first engaging wheel all along; the input shaft is provided with a first small gear; the first small gear and the first large gear, the second small gear and the second large gear and the third small gear and the third large gear are respectively engaged; the fourth small gear is engaged with the fourth large gear at the outer wall of the central main shaft are engagedfor output outwards. The clutch wheel is switched, when the clutch wheel is in a normal operation gear, second-level speed reduction is performed for stranding rotation, or else, when the clutch wheelis in a low-speed operation gear, fourth-level speed reduction is performed to meet the large torque requirement when a single side is heavier after hanging is intensively performed.

When a cam shaft phase is changed during engine operation is stopped, a power supply increase control to an electric motor is carried out, according to which a power-supply duty ratio to the electric motor is increased to a predetermined power increase value which is necessary for moving a VVT apparatus during the stop of the engine operation. Then, the power-supply duty ratio is feedback controlled so that an actual changing speed of the cam shaft phase becomes equal to a target changing speed. As a result, the cam shaft phase can be surely changed and operating sound can be reduced by preventing the changing speed of the cam shaft phase from becoming too fast.

The invention relates to a variable speed rear drive shaft for bicycles, in particular to a stepless variable speed rear drive shaft for bicycles. The shaft comprises a fixed central shaft body, a rear shaft small chain wheel and a rear shaft hub which are arranged on the fixed central shaft body. The rear shaft hub is located on one side of the rear shaft small chain wheel. A first planetary movable shaft wheel train, a wedge claw type stepless speed changing mechanism, a second planetary movable shaft wheel train and a third planetary movable shaft wheel train are arranged on one side of the rear shaft small chain wheel sequentially and are located in the inner cavity of the rear shaft hub. Thus, the stepless variable speed rear drive shaft for bicycles has the advantages of high controllability allowing the variable speed to be in place instantaneously through simple actions, fine acceleration performance allowing continuous gradient-type shifting in various states, highly professional adaptability allowing high torque, low rotation speed and high transmission efficiency, high practicality allowing large adaptive coverage in the large speed ratio range, small size, lightness, noise avoidance and complete-tightness lubrication and the like.

The invention discloses a two-gear electrical control variable speed motor for an electric motorcycle. The motor comprises a motor stator, a motor shaft and a rotor which are arranged in a shell. A drive I-gear gear, a drive II-gear gear and an overrunning clutch are sequentially from right to left on the right part of the motor shaft. A central cam of the overrunning clutch is in fit connection with the motor shaft, and corresponds to an electromagnet arranged on the shell. A driven I-gear gear, a driven II-gear gear and a drive pinion are sequentially arranged from the right to the left on a central gear shaft. The driven I-gear gear is in fit connection with the central gear shaft by a one-way bearing, and is meshed with the drive I-gear gear arranged on the motor shaft. The driven II-gear gear is meshed with the drive II-gear gear idly sleeved on the motor shaft. The drive pinion is integrated with the central gear shaft, and is in fit connection with a drive bull wheel in fit connection with a drive shaft. The motor is organically combined with a gear shifting mechanism, the motor has a simple and compact structure, good radiation effects and long service life, and simply, conveniently and reliably realizes gear shifting operations.