58results about How to "Simple shifting" patented technology

The invention discloses a bicycle with a miniature box transmission on a middle axle. The bicycle comprises a frame device, a transmission device, a moving device and a safety device and is characterized in that: the middle axle of the frame device is provided with the miniature box transmission consisting of a box speed transformation device and a shifting device; the middle axle and an auxiliary axle are arranged in a box; a clutch sleeve and a driving gear are fixedly arranged on the middle axle; the right outer end of the middle axle is in movable fit with a middle axle driven gear and a chain wheel; a clutch sleeve and a driven gear are fixedly arranged on the auxiliary axle; and an auxiliary axle driving gear is fixedly arranged at the right outer end of the auxiliary axle and engaged with the middle axle driven gear. The bicycle has a small and compact structure, large transmission ratio range, high climbing capability, high level road speed, low production cost and high popularization value, is convenient to use, flexible and rapid to shift, easy to manufacture and easy to accept by bicycle enthusiasts and can particularly realize quick shifting under various road conditions.

The object of the invention is a stair-climbing device (1) for moving a wheelchair (2) on stairs by means of muscular force of a person sitting on the wheelchair (2) or by means of an electric drive assembly (76) without the assistance of third party. The stair-climbing device (1) comprises two crawler units (89), which are connected with each other by a drive axle (44); connecting units comprising an attachment devices (17) mountable on each hub of the main wheel (4) of the wheelchair (2) and a holders (26) for rotational mounting on the main wheel (4) to each attachment device (17) and comprising main arms (31) mounted slidingly in the holders (26) and rotationally connected at one its end with the main axle (44) for manual changing a position of the stair-climbing device (1) in relation to the wheelchair (2) between a transport mode position, stair-climbing mode position and optionally landing mode, if the landing mode is present; a levelling units (105) for setting the attached wheelchair (2) in a horizontal position during stair climbing. The invention also includes a wheelchair (2) suitable for attaching a stair-climbing device (1), wherein the wheelchair (2) comprises a frame (6), main wheels (4), front wheels (5), a seat (3) and a back-rest (8). Moreover, the invention includes a wheelchair (2) with a mounted stair-climbing device (1).

The invention belongs to the technical field of gearboxes and relates to a gearbox assembly with power high-low gears and a power reversing function for a tractor. The gearbox assembly comprises a box body and a power output shaft, and the box body is sequentially provided with a wet-type clutch, a synchronizer shift gear, an engagement sleeve shift gear and a planetary reducer which are in transmission with one another; according to the wet-type clutch, the power output shaft serves as an input shaft, when an advancing high gear of the wet-type clutch is combined, a high-gear active gear drives a slave gear, and then a low-gear constant engagement gear pair drives the synchronizer shift gear; when an advancing low gear of the wet-type clutch is combined, an engine power flow is directly output to the synchronizer shift gear through a slave gear of the advancing low gear; and when a reverse gear of the wet-type clutch is combined, the engine power flow is transmitted to a slave gear of the reverse gear on the output shaft by an active gear of the reverse gear through an idle gear and then is output to the synchronizer shift gear through an advancing low-gear gear pair. The gearbox assembly has the advantages that the structure is compact, the size is small, gear shifting is easy, and operating is convenient; and the gearbox assembly with the power high-low gears and the power reversing function is suitable for agricultural machinery such as the tractor.

A manipulator for positioning a test head, particularly at a tester is provided with positioning means for positioning the test head three-dimensionally and forming a mount. The manipulator comprises furthermore a cradle to which the test head can be secured and which is connected to the positioning means. The cradle is connected to a plate comprising at least one first supporting point. The plate is pivotally mounted at the first supporting point about a first axis. To achieve, on the one hand, precise adjustment and, on the other, a certain compliance, the first supporting point is movable between a starting position and an end position relative to the mount in overcoming the effect of a return force.

The invention discloses a planetary differential structure of an electronically-controlled transfer case. The planetary differential structure comprises a differential lock sliding gear sleeve sleeving a drive shaft sleeve, an external spline is arranged on the rear external circle of the differential lock sliding gear sleeve, an internal spline matched with the external spline of the differential lock sliding gear sleeve is arranged on the middle internal circle of a front sun gear, snap teeth are arranged on the circumference of the differential lock sliding gear sleeve which is in splined connection with the drive shaft sleeve, a differential shell is in splined connection with the drive shaft sleeve, and the snap teeth pass through the differential shell to be matched with a differential lock shifting fork sleeve fixedly. The planetary differential structure has the advantages that gear-shifting locking of a differential is achieved through a sliding gear sleeve structure, the drive shaft sleeve transmits torque to a planetary carrier, the sliding gear sleeve does not transmit main torque when the differential is in the differential non-lock state, and only plays a role in gear shift during gear shifting of the differential, and accordingly, gear shifting is simple, resistance is small, and both structural stability and operating stability of the differential are guaranteed.

The invention relates to an automatic speed changer of bicycle, wherein it is mounted on the bicycle with front tooth disc (driven by pedal), back wheel (wheel axle) and chain; it comprises a back tooth disc axially connected to the bicycle, the first and second speed-variable discs changing disc distance via the rotation speed, one generator, one sensor, one belt, and an interactive structure; the front and back tooth disc have chain sheathed between them; the first and second speed-variable discs are axially connected to the back tooth disc and back wheel; the generator is at the back wheel axle to generate via the rotation speed; the sensor with one flexible rod can control the extending of flexible rod based on the electricity of generator; the belt is sheathed between each disc distances of first and second speed-variable discs; the first and second ends of interactive structure are axially connected to the first and second speed-variable discs, while its first end via wires is connected to the flexible rod; the first end of interactive structure, via the tension of wires, controls the zoom of disc distance of first speed-variable disc, and the disc distance of second variable-speed disc of second end will be zoomed reversed.

The invention discloses a transmission shaft and gearbox integrated transmission structure. The transmission shaft and gearbox integrated transmission structure comprises a main transmission shaft, an auxiliary transmission shaft and a speed change mechanism; the rear end of the main transmission shaft is in transmission connection with a first helical gear, and the front end of the auxiliary transmission shaft is sequentially provided with a second helical gear, a third helical gear and an elastic restoring mechanism; and the speed change mechanism comprises a speed change transmission shaft, a fourth helical gear, a fifth helical gear and a sixth helical gear, wherein the first helical gear is meshed with the fourth helical gear all the time to form a first gear pair to push a sliding block and ejector rod structure, the second helical gear is meshed with the fifth helical gear to form a second gear pair to push the sliding block and ejector rod structure continuously, and the third helical gear is meshed with the sixth helical gear form a third gear pair. According to the transmission shaft and gearbox integrated transmission structure, the transmission shafts of a bicycle are provided with the speed change mechanism additionally, the first gear pair is meshed all the time, namely with the first gear as a normal state, a sliding block and an ejector rod are pushed, the second gear pair or the third gear pair is meshed so that the transmission shaft can be put into the second gear or the third gear, and gear shifting is simple.

The invention discloses a large-load self-adaptive automatic speed change system capable of shifting gears easily. The large-load self-adaptive automatic speed change system comprises a power input mechanism, a high-speed gear transmission mechanism, a low-speed gear transmission mechanism, a reverse gear transmission mechanism and a transmission bridge which is used for outputting power. A reverse gear combination sleeve is connected with a reverse gear shaft through a pin roller, so that the reverse gear combination sleeve can rotate by a certain angle relative to the reverse gear shaft andhas a certain degree of freedom, and therefore, the reverse gear combination sleeve is easier to combine with a reverse-gear duplicate gear, gear shifting smoothness is greatly improved, the problemsof clamping stagnation, difficulty in gear shifting, high possibility of being damage and the like during gear shifting are solved, and ultra-large torque can be borne; and improvement is made througha multi-sheet-type friction clutch and a multi-row-type overrunning clutch, so that the self-adaptive automatic speed change system can bear ultra-large load, improve reliability and reduce manufacturing cost.

The invention relates to a novel electric iron, relates to the technical field of household appliances and solves the problem of waste of space on an electric iron due to split arrangement of a switchbutton and a gear shifting button. The novel electric iron comprises an iron body, a button arranged on the iron body and a main control terminal for data storing and data processing, two rotating shafts are arranged on one side of the button and symmetrically arranged on two opposite side walls of the button, a rotating groove for embedded rotating of the rotating shafts is formed in the iron body, one side, close to the button, of the iron body is movably connected with a PCB (printed circuit board), a switch with one end in abutted connection with the iron body and outputting pressing information to the main control terminal is arranged on one side, away from the rotating shafts and the button, of the PCB, and the main control terminal receives the pressing information to control on-off of the electric iron or adjust gear position of the same. The switch button and the gear shifting button are integrated, so that occupied space of the switch button and the gear shifting button is reduced, and space utilization rate is increased.

The invention discloses a gearbox with 10 forward gears and 10 reversing gears. The gearbox comprises a main speed change mechanism with five gears, a high-to-low gear speed change mechanism and a front-to-back gear speed change mechanism. Synchronizers are adopted for gear shifting in the main speed change mechanism. In the gear shifting process, the rotation speeds of two parts to be hitched are consistent and synchronous through the effect of the friction force, gear-shifting elements become meshed without impact, the synchronizers make gear shifting easy, the end surfaces of gear-shifting teeth are protected against damage, and therefore the service life of the gear-shifting mechanisms is effectively prolonged.

The invention discloses a great-load self-adaptive automatic speed control system capable of quickly shifting gears. The great-load self-adaptive automatic speed control system capable of quickly shifting gears comprises a power input mechanism, a high-speed gear transmission mechanism, a low-speed gear transmission mechanism, a reverse gear transmission mechanism and a transmission axle for outputting power. By adopting the technical scheme, a reverse gear combination sleeve is connected with a reverse gear shaft through a pin roller, and the reverse gear combination sleeve can rotate for a certain angle relative to the reverse gear shaft and has a certain degree of freedom, so that the reverse gear combination sleeve can be combined with a reverse gear duplicate gear more easily, the gear shifting smoothness is greatly improved, the problems of clamping stagnation, difficulty in forward gear shifting, easiness in damage and the like easily occurring during forward and reverse gear shifting are solved; the ultra-large torque can be borne; and in addition, through a improvement of the multi-plate type friction clutch and a multi-row type overrun clutch, the self-adaptive automatic speed control system can bear a super great load, the reliability is improved, and the manufacturing cost is reduced.

The invention relates to a drive device (10) for an automotive work machine, wherein the drive device (10) includes a first hydraulic motor (12a) coupled to a driven shaft (16), a second hydraulic motor (12b) and a coupling device (18), by means of which the second hydraulic motor (12b) can be coupled to the driven shaft (16) for torque addition in a first shift state, and can be decoupled from the driven shaft (16) in a second shift state. The coupling device (18) in turn includes at least one synchronizing body (20) with a conical friction surface (22) coupled to the second hydraulic motor (12b) and a gear wheel (24) with a corresponding friction surface (26) movable relatively to the synchronizing body (20) and coupled to the driven shaft (16).

The invention provides a double clutch gearbox and a double clutch speed change method. The double clutch gearbox comprises a motor, an input shaft, an intermediate shaft, an output shaft, a first-gear clutch assembly, a second-gear clutch assembly, a first-gear driving gear, a first-gear driven gear, a second-gear driving gear, a second-gear driven gear, a main speed reducer driving gear, main speed reducer driven gear, a differential mechanism assembly, a clutch sleeve and a gear shifting pull rod; the first-gear clutch assembly comprises a first-gear clutch shifting fork, a first-gear clutch driving disc and a first-gear clutch driven disc; and the second-gear clutch assembly comprises a second-gear clutch shifting fork, a second-gear clutch driving disc and a second-gear clutch drivendisc. The double clutch gearbox has the advantages that 1, gear shifting is easy, and gear shifting can be achieved only by operating the gear shifting pull rod; 2, power is not interrupted during gear shifting, a motor continues working, and gear shifting is smooth and free of impact; 3, the double clutch efficiency is high, and the service life is long; and the size is small, the weight is low,and arrangement is facilitated.