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

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 present invention is about actuator modules that can be applied to various forms of joints and about joint structure using such modules, and the actuator modules includes actuator body comprising of electronics system and drive system and a separately connected decelerator, and the speed and torque obtained from the first deceleration of the actuator module body can be easily changed through the second decelerator, and since the decelerator separately connects with the actuator body it can be applied to various forms of decelerator and the actuator body can be placed varyingly making it applicable to various joint forms, and said actuator modules can be used form various joint structure.

The invention relates to an automatic power speed changer and belongs to the field of mechanical power transmission. According to the automatic power speed changer, on two shafts, achieving speed changing, of the speed changer, at least one high-speed gear and at least one low-speed gear which are provided with different diameters and different numbers of teeth are fixed on one shaft at intervals, at least two remodeled non-inner-ring wedged-block type isolators are axially and detachably sleeved on a spline of the other speed changing shaft in parallel, an inner ring of each isolator is an overall slide sleeve which is provided with a protrusion in the middle and can horizontally slide along the spline, and at least one high-low speed gear and at least one low-speed gear which have different diameters and different numbers of teeth are arranged on an outer ring of each detachable isolator. The automatic power speed changer can reduce self weight and cost and facilitate achieving speed changing.

The invention discloses a novel single-spindle pentahedron machining CNC milling machine, belongs to the field of numerically-controlled machine tools and relates to pentahedron machining tools. The novel single-spindle pentahedron machining CNC milling machine comprises a lathe bed, a stand column, a horizontal feeding system and a vertical feeding system. The vertical feeding system is connected with a spindle in a 360-degree rotating mode through a spindle indexing device. The horizontal feeding system is connected with a workbench indexing device in a 360-degree rotating mode. According to the novel single-spindle pentahedron machining CNC milling machine, a single-spindle pentahedron can be machined; meanwhile, machining transmission precision and indexing accuracy are improved, the machining range is widened, machining efficiency is improved and the machining cost is lowered.

Provided is an electric assist bicycle provided with a so-called single-axle motor drive unit capable of maintaining high torque detection performance. On an outer periphery of a crank shaft (7a), there are disposed a cylindrical human power transmission member (28) formed with a torque sensor (31) for detecting human power drive force, and a combined-force member (29) that combines the human power drive force and auxiliary drive force from a motor (21). No one-way clutch is disposed in a drive force transmission route spanning the crank shaft (7a), the human power transmission member (28), and the combined-force member (28), so that the human power transmission member (28) and the combined-force member (29) are rotated at all times as the crank shaft (7a) rotates. A rotation detector (10) is also fitted to detect the rotation of the combined-force member (29).

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.

The invention relates to a double-power input type transmission for a caterpillar. The double-power input type transmission comprises a box body. The box body is provided with a power input mechanism, a double-power input mechanism, a middle transmission mechanism, a differential speed type drive mechanism, a left caterpillar band drive mechanism, a right caterpillar band drive mechanism and a power output mechanism. The power input mechanism is connected with the double-power input mechanism and the power output mechanism. The double-power input mechanism is connected with the differential speed type drive mechanism through the middle transmission mechanism. The differential speed type drive mechanism is connected with the left caterpillar band drive mechanism and the right caterpillar band drive mechanism. According to the double-power input type transmission, a mechanical and hydraulic parallel type double-power input device and a differential speed type steering mechanism capable of controlling gear rings of planetary gear mechanisms on the two sides of a drive wheel through external power to rotate forwards and reversely, the drive efficiency and control convenience of the caterpillar can be improved effectively, steering accuracy is improved, and the defects that an existing caterpillar is low in transmission efficiency and large in traveling side deflection resistance and cannot be controlled easily, and the sludge blocking problem is serious when the caterpillar conducts steering at the edge of a field are overcome.

A transmission for a bicycle pedal has a fixed axle with an end operatively connected to a wheel of the bicycle and a guide axle connected to the fixed axle to form a crank. A bicycle pedal is rotatably mounted on a slider which is movably mounted on a guide portion of the guide rod for translation therealong. The ration of gyration of the pedal can be varied by sliding the pedal along the guide axle and/or telescoping the guide axle relative to the fixed axle. The slider and mounted pedal can be rotated toward the bicycle frame for compact storage.

The invention discloses a long cone and rolling cone type CVT (continuously variable transmission), which comprises a box body, a first long cone roller wheel, a second long cone roller wheel, at least one pressure device, a first thrust bearing, a second thrust bearing and a middle rolling cone wheel set, wherein the middle rolling cone wheel set comprises a middle rolling cone wheel, a connecting device and an adjusting device; a first conical surface and a second conical surface are arranged on the middle rolling cone wheel; and the first long cone roller wheel and the second long cone roller wheel are connected with the box body through the first thrust bearing and the second thrust bearing respectively. The axial pressing action of the first long cone roller wheel is performed through the pressure device; the contact positions of the middle rolling cone wheel on the two long cone roller wheels are adjusted; and the working radiuses of the two long cone roller wheels can be continuously changed to achieve the effect of CVT. According to the CVT, the geometrical slippage value in the optimal transmission state is 0, the geometrical slippage phenomenon in the cone wheel type long cone and rolling cone type CVT is effectively reduced, the transmission efficiency is improved and the transmission power is increased. The CVT can be used for the fields of various vehicles, ships, mechanical transmission and the like.

The invention relates to a high-speed ejection device for a steel ball. The device comprises an operation keyboard and display, a rotating track, a sliding baffle, a pull rod, a pull rod controller, a motor, a master controller, an electromagnet sleeve, the steel ball and a rotating handle. When a speed required to be reached by the steel ball is set by the keyboard, the master controller controls the motor to rotate, and the steel ball speed is calculated; at the same time, the electromagnet sleeve is powered on, and the steel ball is absorbed so as to be prevented from falling; when the steel ball reaches a required speed, firstly, the master controller controls the pull rod controller to pull down the sliding baffle, the rotating track and an outlet are communicated, the electromagnet sleeve is powered off, and finally, the rotating speed of the motor is decreased, so that the steel ball and the electromagnet sleeve are separated, and the steel ball is ejected from the outlet along the rotating track under the action of the centrifugal force. The rotating speed of the motor is adjusted, so that the ejection speed of the steel ball can be changed very conveniently, and the adjustment range is very wide. The high-speed ejection device for the steel ball is compact in whole structure and convenient to operate, the steel ball speed can be controlled accurately, and the device has the advantages of high reliability and simple adjustment.

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 present invention relates to a gear speed changer and a folding bicycle. It is characterized by that it has several gears which can be axially moved, said gears can be fit with several fixed gears, one component is moved, a mobile gear can be extended and can be meshed with a fixed gear, said component can be further moved, the meshed gear can be drawn back, and said component is continuously moved, another gear can be meshed with another fixed gear so as to change speed, the reciprocating movement of said component an implement repeated speed increment and decrement, its speed change gear and speed change ratio can be freely selected. Said speed changer can be mounted on the bicycle, and can be connected with ratchet wheel and drive wheel by means of multiple acceleration, the diameter of wheel is less than 10cm, and its speed can exceed that of existent bicycle, said bicycle handlebar can be folded by pressing a spring and sweeping a flab spring, and said bicycle body also can be completely folded by using a mobile slide barrel, so that its volume is small and weight is light. Said speed changer can be used in electric bicycle, motorcycle, power generation equipment and other machine.

The invention belongs to the field of mechanical stepless transmission and includes a harmonic gear-driving stepless transmission, which is composed of a driving shaft, a driven shaft, a rigid gear, a flexible gear, a wave generator and a roller; the flexible gear can make axial movement relative to the rigid gear, the teeth of the flexible gear are composite teeth, which are composed of two branch teeth. When the flexible gear makes axial movement relative to the rigid gear, the angle between the two branch teeth of the composite teeth and the tooth thickness are variable, when the rigid gear keeps stationary and the driving shaft actuates the wave generator to rotate, the wave generator forces the flexible gear to generate continuous elastic deformation by the roller, and the tooth thickness of the composite teeth of the flexible gear also changes with the deformation of the flexible gear; because the tooth thickness or the width between the teeth keeps variable when the teeth number of the rigid gear is fixed, although the teeth number ratio of the flexible gear and the rigid gear keeps unchanged, the arc length passing the nodal circle is variable, and the stepless transmission can be realized so long as the flexible gear makes axial movement relative to the rigid gear.

The invention discloses an internal contact conical ring type continuously-variable transmission. Two conical wheels are in internal contact with two conical rings respectively, the stress of a contact area is small, and the service life can be improved. Meanwhile, the reliability is high and the power transmission efficiency is high. The continuously-variable transmission comprises a shell, an input shaft, a planetary line, the input conical wheel, the conical rings, the output conical wheel, an output shaft, a differential mechanism, an output gear, a loading mechanism and a speed changing mechanism, wherein the input shaft, the planetary line, the input conical wheel, the conical rings, the output conical wheel, the output shaft, the differential mechanism, the output gear, the loading mechanism and the speed changing mechanism are located in the shell. Power is transmitted between the output conical wheel and the input conical wheel through the conical rings which are arranged outside the two conical wheels in a sleeved mode. The loading mechanism is a hydraulic-mechanical loading mechanism formed by coupling a hydraulic part and a mechanical part. The speed changing mechanism is of a structure similar to a bearing, and speed changing is realized by pushing an outer ring to drive the conical rings.

The invention discloses a cutting device and method for a cylindrical paper core of a filter part. The cutting device comprises a workbench, wherein a supporting seat is mounted on the workbench; a mechanical arm is mounted on the supporting seat; a rotary motor is mounted on the mechanical arm; the rotary motor is connected with a gearbox; the output shaft of the gearbox is connected with the rotary shaft for transmitting torque; a circular cutter is mounted on the rotary shaft; a hand wheel is mounted on the mechanical arm; and a mounting table is arranged below the circular cutter. The cutting device can be used for conveniently producing the cylindrical paper core, which is perfect and attractive in appearance, for the filter part on a large scale.

The invention discloses a hydraulic transmission device which comprises a housing, a front cover and a rear cover which are matched with the housing, and a transmission mechanism arranged in a cavity, wherein the cavity is arranged on the housing; the transmission mechanism comprises an input shaft, an output shaft, a rotor and a rotating ring; the rotor is arranged on the input shaft, and rotates with the input shaft; the rotating ring is arranged outside the rotor, and connected with the output shaft; the rotating ring and the output shaft rotate together; a plurality of sliding blades are arranged on the rotor; and at least one gradual extending section and at least one gradual shrinking section are arranged on the inner surface of the rotating ring in a rotating direction. The transmission device can control the magnitude of output torque and rotating speed by controlling fluid parameters, can achieve torque-free output idling, and is less in energy consumption, stable to start, high in efficiency, simple in structure, safe and convenient to operate, long in service life, high in power density and wide in application.

The invention discloses a transmission structure comprising an input module, a speed change module and an output module; the input module comprises an input shaft, and the output module comprises an output shaft; the speed change module comprises a sliding guide sleeve, a gear shifting mechanism, a gear set and a transmission part, and the gear set comprises an outer gear and an inner gear which are meshed with each other; the sliding guide sleeve is sleeved with the input shaft, and provided with an ring groove and a key, and the gear shifting mechanism is clamped at the ring groove; the inner gear is provided with a first transmission hole, and the output module is provided with a second transmission hole; the transmission part is connected with the first transmission hole and the secondtransmission hole, and the outer gear is provided with a first inner hole comprising a first inner groove; and the output module is provided with a second inner hole comprising a second inner groove,and the key is in key connection with the outer gear through the first inner groove or in key connection with the output shaft through the second inner groove. The transmission structure disclosed bythe invention is compact and simple, low in cost, smooth in gear shifting, and convenient and reliable in speed change, and meanwhile the problems of gear collision, even gear breakage, are avoided.

The invention relates to a portable power tool (10), in particular a screwing device and/or drilling device, having a drive motor (16) for driving a transmission drive (25) of a transmission (30) which has a transmission output (26) for driving a tool receptacle (18) of the portable power tool (10) and a first gear stage (41) and a second gear stage (42), wherein the transmission has a first blocking device (61) for blocking a gearing element, forming a ratchet gearing element (43), of the first gear stage (41) and a second blocking device (62) for blocking a gearing element, forming a ratchetgearing element, of the second gear stage (42), wherein the gear stage having the respectively blocked ratchet gearing element transmits a torque from the transmission drive (25) to the transmissionoutput (26), wherein a direction of rotation of the drive motor (16) is changeable and, depending on the direction of rotation of the drive motor (16), the first gear stage (41) or the second gear stage (42) transmits a torque from the transmission drive (25) to the transmission output (26). Provision is made for one of the two gear stages to effect a reversal in the direction of rotation betweenthe transmission drive (25) and the transmission output (26).