43results about How to "Improve torque transmission efficiency" patented technology

The invention relates to a small-tooth-difference high-precision cycloid gear speed reducer which comprises an input shaft, a speed reduction mechanism and an output shaft. The speed reduction mechanism comprises a tooth ring, cycloid tooth pieces, a holder and eccentric shafts. The cycloid tooth pieces are eccentrically arranged on the input shaft through a first eccentric assembly. The holder comprises two holding end covers and connecting columns. The connecting columns are connected with and located on the holding end covers. The eccentric shafts penetrate through tooth penetrating shaft holes. A second eccentric assembly is arranged between the eccentric shafts and the tooth penetrating shaft holes of the cycloid tooth pieces. The two holding end covers are provided with cover penetrating shaft holes respectively. A third eccentric assembly is arranged between the two ends of the eccentric shafts and the cover penetrating shaft holes of the holding end covers. The cycloid gear speed reducer is small in size, all speed reduction parts can achieve close fitting, the precision of the whole speed reducer is improved, and the high transmission ratio can be achieved.

Provided is an undercut-free stationary constant-velocity universal joint with eight balls, which can improve a torque capacity at a high operating angle while ensuring durability when being operated at a low operating angle. If the distance between the center of a track groove (32) and the center of a ball (37) is defined as Rt, and the axial distance between the center of the track groove (32) and a joint center plane (P) is defined as F, the ratio (R1) between F and Rt satisfies 0.061<=R1<=0.087. If the radial offset, i.e., the distance between the center of the track groove (32) and a joint center axis (X) is defined as fr, the ratio (R3) between fr and Rt satisfies 0.07<=R3<=0.19. On the bottom surface of the track groove of an internal joint member, a hardened layer is formed, in which if the effective hardening depth at Hv513 is defined as Di, and the diameter of each ball is defined as d, at least the effective hardening depth ratio (Di / d) is not less than 0.111.

A cutting tool has a cutting head, a motor and a transmission means drivable by the motor. The cutting head comprises first and second cutting members, wherein the first cutting member is pivotably moveable with respect to the second cutting member. At least the first cutting member is drivable by the transmission means between a first angular position with respect to the second cutting member and a second angular position with respect to the second cutting member, in which a space between the respective cutting blades is closed. The transmission means is a bevel gear on the output shaft of a gearbox which conveys drive power from the motor to the drive gear. The bevel gear directly engages a bevel wheel member connected to the first cutting member and which swivels with the first cutting member about the same swivel point. A controller comprises main, first and second switches which control the motor to move the first cutting member (movable blade). The main switch acts as a main power switch whereas the first and second switches act as limit switches detecting movement of said movable blade at the limits of its intended motion. The controller exerts automatic control over movement of the first cutting member in response to inputs from the first and second limit switches.

The invention relates to a novel light fuel internal combustion engine. Acting air cylinders are arranged coaxial with air pressing air cylinders, a high-pressure air storage tank is arranged betweenthe acting air cylinders and the air pressing air cylinders, acting pistons are directly connected with air pressing pistons through a multi-surface rack piston connecting rod, the lower rack of the multi-surface rack piston connecting rod is meshed with an output gear, the output gear is installed on an output shaft through an overrun clutch, piston connecting rod sets are used for converting thereciprocating motion of the piston connecting rod sets into circular motion of the output shaft through the overrun clutch to do work, side racks of the two sets of piston connecting rods are meshedwith reverse pushing gears, two groups of acting air cylinders and the air pressing cylinders are arranged in parallel to form a four-cylinder unit, and the two sets of piston connecting rods move repeatedly to form a working cycle; due to the fact that the acting air cylinders adopt indirect high-pressure air inflation, detonation cannot be generated; and light-weight fuel can be used, so that the energy-saving and emission-reducing effects are obvious.

The invention discloses a unidirectional clutch type stepless speed change device for off-road motor vehicles, comprising a driving wheel component (1), a driven wheel component (4), a belt (3); the driving wheel component (1) comprises a pulley (6), an axle (13), a sliding sleeve (7), a spring seat (8), a pressure roller (9), a driving wheel spring (11), a supporting wheel (10); wherein, the sliding sleeve (7), the spring seat (8) and the pressure roller (9) are sheathed on the axle (13) and are positioned by the supporting wheel (10), the driving wheel spring (11) is arranged between the spring seat (8) and the pressure roller (9); the inner surface of the sliding sleeve (7) is provided with spiral grooves (22), spiral guide surfaces (21) facilitate the transition between two spiral grooves, the axle (13) is provided with pin springs (14) and pins (15), the pins (15) are contacted with the spiral grooves (22) of the sliding sleeve (7). With the structure adopted, the unidirectional clutch type stepless speed change device has the characteristics of simple and reasonable structure, reliable performance and small volume, high integrity and convenient operation and maintenance.

The invention relates to the technical field of monitoring, in particular to a security monitoring device which comprises a rack, a movable plate and a monitoring host, a motor is fixedly connected to the rack, the movable plate is fixedly connected with an output shaft of the motor, the monitoring host is located on the movable plate and fixedly connected with the movable plate, and a light transmitting mirror is arranged on a front panel of the monitoring host. A cam and an air barrel matched with the cam are fixedly connected to a transmission shaft, an air storage box is arranged on the movable plate, a piston is arranged in the air storage box, a push rod provided with a rack is fixedly connected to the piston, a gear meshed with the rack and a rotating sleeve capable of being in contact with or disconnected from the gear are arranged on the movable plate, and a cleaning mechanism for cleaning the light transmitting mirror is arranged on the rotating sleeve. According to the scheme, a series of devices which correlate and interact are arranged to convert the rotary motion of the monitoring host into rhythmic automatic cleaning of the light transmitting mirror, so that the light transmission of the light transmitting mirror is effectively improved to improve the monitoring quality of the monitoring host, and meanwhile, the danger and high labor cost generated during manual cleaning are avoided.

The invention provides a backstitch structure of a sewing machine, and belongs to the technical field of clothing manufacturing devices. The technical problem that a backstitch structure of an existing sewing machine cannot save labor enough is solved. The sewing machine comprises a bottom plate. The backstitch structure comprises a swing base, a driving piece fixedly arranged on the bottom plate,and a crank support. A backstitch crank is arranged on the crank support and rotationally connected to the crank support through a crank axial pin. An output shaft of the driving piece is connected with a crank pull rod. One end of the crank pull rod is connected with a rolling screw. The rolling screw is connected with an auxiliary rod. One end of the auxiliary rod is hinged to the bottom plate.A slide groove is formed in one end of the backstitch crank. One end of the rolling screw is movably clamped in the slide groove. A swing pull rod which can drive the swing base to swing is connectedto the swing base. One end of the swing pull rod is connected with the other end of the backstitch crank. According to the backstitch structure, by adding the auxiliary rod and reasonably arranging the connecting positions of all the parts, the torque transmission efficiency of a backstitch transmission structure is improved.

A clutch and a clutch pressure plate, wherein the clutch pressure plate includes: a support plate, the material of which is steel; a friction member arranged on the support plate has a friction surface for frictionally combining with a clutch driven plate , the material of the friction member is cast iron. The support plate and the friction parts are composed of separate parts. The steel makes the support plate have high strength, and the cast iron makes the friction parts have high specific heat capacity. The clutch pressure plate of this technical solution integrates the advantages of high specific heat capacity friction parts and high-strength support plate, and has good performance. Torque transmission efficiency and a wider range of applications.

The invention discloses a torque output tool and its one-way torque transmission mechanism, which comprises: a casing, a motor and a transmission assembly, the motor and the transmission assembly are arranged in the casing, the transmission assembly includes a one-way torque transmission mechanism, and the one-way torque transmission mechanism Including: main shaft, driving part, lock sleeve, lock core, lock piece, etc., the lock sleeve includes a lock ring, the lock core includes a cylinder, and the inner wall of the lock ring includes at least two sections that can be locked or loosened with the outer wall of the lock cylinder cylinder The limiting wall surface of the locking part, the locking part is arranged between the locking ring and the cylinder, under the action of centrifugal force, when the driving part is driven to the main shaft, it only contacts the locking sleeve stably without unnecessary impact and friction , improve the efficiency of torque transmission, and reduce the heat generated by this mechanism, so as to reduce the adverse effects of temperature rise on tool reliability.

The invention relates to the technical field of engineering machinery, in particular to a loader side unloading device, which includes a bucket and a bracket. The bottom end of the bucket is equipped with an arc-shaped sliding part. The sliding part cooperates with the arc-shaped guide rail, and the bucket slides along one side of the arc-shaped guide rail driven by the arc-shaped sliding part; the middle part of the bracket is fixed with a tie rod hinge support, and the tie rod hinge The support is fixedly connected with the oil cylinder support, and the oil cylinder support is rotatably connected with the end of the hydraulic cylinder. The piston rod of the hydraulic cylinder is hinged with the bucket, and the expansion and contraction of the piston rod in the hydraulic cylinder provides power for the sliding of the bucket. The arc-shaped sliding part includes two arc-shaped plates fixedly connected with the bucket, and the opposite side of the two arc-shaped plates is provided with an arc-shaped sliding head. The invention can improve the torque transmission efficiency when the side is released, and avoid repeated force fracture at the hinge of the pin shaft.

The invention relates to an end-surface key structure for a coupler, belonging to the technical field of key coupling pieces. The end-surface key structure comprises a key and a key groove manufactured on the end surface of a coupling flange; and the two ends of the key are manufactured with through holes in which fastening pieces for fixing the key and the coupling flange are arranged in a penetrating manner. The end-surface key structure leads the key to be embedded into a shaft hole of the coupling flange to be repositioned and fixed in the radial direction and increases the contact between the key and the coupling flange; therefore, the connection firmness between the key and the coupling flange is increased so as to ensure that the key does not deform and drop off to avoid failure; and the efficiency of torque transmission of the coupler is also improved.

The invention relates to a stator for a torque converter which includes a stator hub, a stator shroud, and a plurality of stator blades. The stator blades extend radially outward from the stator hub to the stator shroud and include a base intersecting the stator hub and an end intersecting the stator shroud. The base portion has a width Laa and the end portion has a width Lcc. In the direction inwhich the stator blades extend radially outward, the width of at least one of the plurality of stator blades is first gradually increased and then gradually decreased, and has a width Lbb, Laa < Lbb,and Lcc < Lbb at the widest thereof. The present disclosure also relates to a torque converter including the stator as described above.

A cutting tool has a cutting head, a motor and a transmission means drivable by the motor. The cutting head comprises first and second cutting members, wherein the first cutting member is pivotably moveable with respect to the second cutting member. At least the first cutting member is drivable by the transmission means between a first angular position with respect to the second cutting member and a second angular position with respect to the second cutting member, in which a space between the respective cutting blades is closed. The transmission means is a bevel gear on the output shaft of a gearbox which conveys drive power from the motor to the drive gear. The bevel gear directly engages a bevel wheel member connected to the first cutting member and which swivels with the first cutting member about the same swivel point. A controller comprises main, first and second switches which control the motor to move the first cutting member (movable blade). The main switch acts as a main power switch whereas the first ad second switches act as limit switches detecting movement of said movable blade at the limits of its intended motion. The controller exerts automatic control over movement of the first cutting member in response to inputs from the first and second limit switches.

The present invention relates to an eight-ball non-undercut type fixed constant velocity universal joint capable of improving torque capacity at high operating angles while ensuring durability at low operating angles. In this eight-ball non-undercut type fixed constant velocity universal joint, the center of the track groove (32) of the outer joint member and the center of the track groove (32) of the inner joint member are separated from the joint center plane (P) respectively. They are separated on both sides in the axial direction, and are biased at positions separated from the center axis (X) of the joint to the opposite side in the radial direction with respect to these track grooves (32). The distance between the center of the track groove (32) of the outer joint part and the center of the ball (37) is Rt, and the axial distance between the center of the track groove (32) of the outer joint part and the center plane (P) of the joint When it is F, the ratio R1 of F to Rt is 0.061R1≤0.087, and when the distance between the center of the track groove (32) of the outer joint member and the central axis (X) of the joint, that is, the offset in the radial direction is fr, The ratio R3 of fr to Rt is 0.07≤R3≤0.19.

The invention belongs to the technical field of a tea picking machine,and particularly relates to a tea picking machine with a multi-wheel bump-proof walking mechanism.It comprises a door type structure machine frame, an engine on the machine frame, a gearbox, a tea picking mechanism, one front wheel is respectively arranged at the left and the right side of the machine frame, and more than one back wheel is respectively arranged at the left and the right side of the machine frame.The tea picking machine is characterized by also comprising two output shaft motive power driving transmission mechanisms, the front and back wheel motive power driving branched transmission mechanisms are connected with each output shaft motive power driving transmission mechanism, the front wheel motive power driving dump-proof vibration reduction transmission mechanism and the back wheel motive power driving transmission mechanism are connected with the front and back wheel motive power driving branched transmission mechanism,the front wheel driving transmission mechanism is connected with the front wheel motive power driving damp-proof vibration reduction transmission mechanism, and the back wheel dump-proof walking mechanisms are connected with the back wheel motive power driving damp-proof vibration reduction transmission mechanism.It has the advantages that the stable, efficient, quality-guaranteeing and quantity-guaranteeing tea picking on uneven hill ground can be realized.

The invention provides a high air pressure drill bit comprising a drill bit body and ally teeth. The drill bit body comprises a crushing head, a spline and a drill bit tail end. The alloy teeth are arranged on the crushing head with a length of L1. The length of the spline is L2. The length of the travel of the drill bit tail end is L3. The sum of L1, L2 and L3 is 230mm, L2 is greater than L1, and L2 is greater than L3. The loss of stress wave transmission of the drill bit body is reduced, so that the rotating torque transmission is more stable, the efficiency is higher and the service life is longer.