59results about How to "Reduce turning force" patented technology

The invention relates to the technical field of steel bar bending machines, in particular to a working method of steel bar bending equipment for building engineering. The steel bar bending equipment for building engineering comprises a shell, a workbench is arranged at the top of the shell, a driving mechanism is arranged inside the shell, a torsion mechanism is arranged at the output end of the driving mechanism, an auxiliary mechanism fixedly connected with the shell is arranged on one side of the torsion mechanism, and an adjusting mechanism is arranged at the bottom of the shell. A drivinggear is used as a small gear to drive a driven gear to rotate as a large gear, the rotating force is small, the torsion force of a driving motor is reduced, the driving motor is prevented from beingburnt due to excessive load of the driving motor, the high-efficiency bending transmission can be realized by using the motor with lower power, and the driving motor is protected.

The invention relates to the technical field of photovoltaic power generation, and discloses a device capable of changing the placement angle of a solar cell panel and performing cleaning and cooling.The device comprises a cooling and cleaning device main body, a sliding groove is formed in the inner wall of the cooling and cleaning device main body, a sliding block is slidably connected to the interior of the sliding groove, and a spring is fixedly mounted at the bottom of the sliding groove. And a movable rod is movably connected to the right side of the sliding block, a rotating wheel is movably installed at the bottom of the movable rod, and a monopole magnet is fixedly installed on the right side of the rotating wheel. A solution in the reservoir is evaporated through irradiation oflight and enters the air bag, the weight of the reservoir is reduced, the rotating force of the rotating wheel is limited to be reduced, the single-pole magnet on the rotating wheel can be attracted by the other single-pole magnet, the rotating wheel rotates to jack up the sliding block, and the solar cell panel ascends. And when the light intensity of the left side is strong, the rising height ofthe left side is increased, and the effect of changing the angle of the solar cell panel according to different illumination intensities is achieved.

The invention belongs to the technical field of rollers, and discloses a composite material roller and a preparation method thereof. The composite material roller is mainly characterized at the technical aspect by comprising a core shaft with bearings, and a composite material layer is arranged on an outer side of the core shaft, so that under the condition that the diameter of the roller is not lengthened, the composite material layer on the outer side of the core shaft can be very thick; when the diameter of the roller becomes smaller and smaller slowly due to the friction of the roller during use, the performance of the roller cannot be impacted, the wear resisting property is high, and the service life is greatly prolonged. The composite material roller is further improved in such a manner that fin strips are arranged on the periphery of the composite material layer; the cross sections of the fin strips take the shapes of trapezoids or similar trapezoids of which the top ends are arc surfaces. Therefore, the material is saved, the cost of the roller is reduced, the mass and the rotational power of the roller can be reduced, energy waste is reduced effectively, the friction force between the roller and a conveying belt can be enlarged, and slipping between the roller and the conveying belt is avoided.

The invention discloses a screw propulsion mechanism of a high-voltage AC vacuum circuit breaker. A propulsive plate is spliced with two screws; the two screws and an operating rod are inserted into a transmission case to form a double-screw transmission case assembly; one end of each screw, which is inserted into the transmission case, is provided with a large gear on an end head; one end of the operating rod, which is inserted into the transmission case, is provided with a small gear, and the end head of the one end of the operating rod is connected with a locked push plate; the two large gears are mutually meshed with the small gear; the double-screw transmission case assembly is arranged on the middle position inside a front assembling frame; and an interlocking lever penetrates through the front assembling frame and is provided with an interlocking crank arm. A stress point is changed from one point positioned in the middle of a single screw to a left stress point and a right stress point during feeding by adopting a double-screw structure, each stress point is half reduced in the magnitudes of stresses under the condition of unchanged feeding force, therefore the stress conditions of the front assembling frame are improved; the rigidity of the middle structure of the front assembling frame is strengthened through the design of the transmission case, and the deformation amount of the front assembling frame is obviously reduced, therefore the front assembling frame is suitable for a circuit breaker handcart with higher power.

The invention discloses a leakproof feeding device for plastic machinery production. The device comprises a base, and is characterized in that the upper part of the base is connected with a turntable through a bearing, the inner side of the turntable is fixedly connected with a feeding bin, the left and right sides of the upper end of the feeding bin are fixedly provided with telescopic plates, the two telescopic plates are both connected with an air pump through pipelines respectively, a rotating shaft is fixed to the inner wall of the feeding bin, and a stirring disc is connected to the middle of the rotating shaft through a bearing. The leakproof feeding device for plastic machinery production comprises a feeding system, wherein the feeding system is electrically connected with the turntable, the inner wall of the feeding bin, the rotating shaft and the air pump. The feeding system comprises a scanning module, a data transmission module, a conversion module and a control module, the scanning module comprises an imaging module and a data judgment module, and the data transmission module comprises a transmission module and a receiving module. The feeding device has the advantages of intelligent feeding and the function of detecting and mixing materials.

The invention relates to an electromagnetic drive device, comprising a drive part (10), which has a circular or oval cross-section, can move in a to-and-fro manner in the stroke direction (H), and which has a permanent magnet arrangement that is magnetized transversal to the stroke direction (H). Said permanent magnet arrangement has at least one pair of oppositely magnetized magnet parts (11-14)that are placed one behind the other in the stroke direction, and is situated in the interspace of a yoke arrangement (16) having pole pieces (19-22) that, in the magnetizing direction, are provided on opposite sides of the drive part (10). The yoke arrangement (16) has two pairs of pole pieces (19, 21 and 20, 22), which delimit the interspace and which are connected to one another via two yoke areas (23, 24) extending essentially parallel to the stroke direction (H). At least one of the yoke areas (23, 24) is surrounded by a coil (25, 26) that can be flown through in order to effect a stroke. A pair of oppositely magnetized magnet parts (11, 12 and 13, 14) of the permanent magnet arrangement is assigned to each pair of pole pieces (19, 21 and 20, 22). This makes it possible to easily obtain a very slim design.

A passive joint device, a cable guide, and a power transmission mechanism are provided. The passive joint device supports a rotation-side member so as to be rotatable in the vertical direction with respect to a fixed-side member about a horizontal axis, and is provided with: a cylindrical cam member, which is fixed to the fixed-side member, has a cylindrical surface about the horizontal axis, and has a pair of cam surfaces symmetrically arranged on the cylindrical surface by taking the horizontal axis as the center and obliquely formed along the horizontal axis; a pedestal having a pair of cam followers disposed inside a horizontal shaft fixed to the rotation-side member so as to be capable of sliding along the horizontal shaft, the cam followers being in surface contact with the pair of cams; and a spring which is disposed inside a horizontal shaft fixed to the rotation-side member and which biases the pedestal toward the fixed-side member along the horizontal shaft, wherein the pair of cam followers is brought into contact with the pair of cam surfaces by the force of the spring, and the pair of cam surfaces are pressed to apply an upward rotational force to the rotation-side member so as to reduce a downward rotational force of the rotation-side member generated by the weight applied to the rotation-side member.

The invention discloses a steel member turning device. The steel member turning device comprises a base, a turning base, a pin shaft and a check block, the base is composed of a bottom board and two parallel lower supporting boards, the lower supporting boards are vertically and fixedly connected to the upper end face of the bottom board, the upper ends of the two lower supporting boards are provided with through holes, the turning base is composed of a bearing board and two parallel upper supporting boards, the check block is arranged on the upper end face of the bearing board, the upper supporting boards are perpendicularly and fixedly connected to the lower end face of the bearing board, the lower ends of the two upper supporting boards are provided with through holes, the pin shaft penetrates through the through holes of the lower supporting boards and the through holes of the upper supporting boards so that the base can be hinged to the turning base, and the lower ends of the two upper supporting boards are embedded into the space between the two lower supporting boards. The turning force generated in the turning process of steel members can be reduced effectively, turning safety of the steel members is ensured, and the requirements for lifting capacity of a crane are reduced.

The invention discloses an anti-eccentric-wear ball type valve rocker arm combined device which comprises a rocker arm shaft, a valve rocker arm, an adjusting bolt, a ball, a valve bridge and a valve. The valve rocker arm is arranged on the rocker arm shaft in a sleeving manner, and the valve rocker arm can swing with the rocker arm shaft as the axis. The adjusting bolt is arranged at the end of the valve rocker arm and can move along with the valve rocker arm. The ball is arranged at the lower end of the adjusting bolt and can move along with the adjusting bolt. The valve bridge is arranged below the adjusting bolt, a guide groove is formed in the top of the valve bridge, and the ball abuts against the guide groove so that the valve bridge can move along with the adjusting bolt. According to the anti-eccentric-wear ball type valve rocker arm combined device, the problems of eccentric wear and overturning of the valve can be finally solved by reducing the problem of stress point changing of the valve rocker arm and the valve bridge.

The invention discloses a manual multifunctional wire tightening device and a wire tightening method. The device comprises a rack, a rope winding drum, a gear transmission and a pulley block. According to the manual multifunctional wire tightening device and the wire tightening method which are disclosed by the invention, the speed is changed by a gear and the pulley block and the tractive force is reduced, so that the hand-cranking and manual rotating force is greatly reduced and the weight of a machine body is only about 30kg and is flexible to construct and carry. The traction operation can be carried out by a single person in a hand-cranking and manual mode at the position far away from a strain power pole or a hoisting device by over ten meters; and the manual multifunctional wire tightening device is different from the heavy weight of a conventional maneuvering winching machine and the time wasting and labor wasting of a mode of manually winching and circling by a plurality of people. The manual multifunctional wire tightening device and the wire tightening method are particularly suitable for the field erection construction of various specifications and types of wires.

The invention discloses a process for fast cutting round steel axially. According to the process, a lifting mechanism and a support mechanism are involved. The support mechanism comprises a flat plate. The two ends of the flat plate are each provided with a vertical plate. The two vertical plates are parallel to each other and installed on the flat plate perpendicularly. A bearing is installed in each vertical plate. A roller is installed between the two bearings. The lifting mechanism is installed on a triangular support and connected with the bottom of the flat plate. According to the process for fast cutting the round steel axially, in the cutting course, the supporting function of two supporting points is always applied to the round steel, so that the horizontal position state of the round steel is kept, and the defect that in the round steel cutting course, due to the function of the gravity of the round steel, one end of a workpiece cut is upwards-warped when the cut is deepened, and thus the cut of the cut round steel is inclined is overcome. Through the mode that rotary handles are arranged on a rotary barrel, force arms can be added, and rotating force is reduced.

The invention relates to a runner-type piezoelectric beam energy harvester with a suspended shaft end, and belongs to the field of piezoelectric power generation. A left end cover and a right end cover are arranged at the left side and the right side of a runner respectively; metal substrates provided with cantilever beams are crimped between the left end cover and the side wall of the runner and the right end cover and the side wall of the runner respectively; each metal cantilever beam and an adhered piezoelectric crystal plate form a piezoelectric vibrator; an excited magnet is arranged at a free end of each piezoelectric vibrator, is arranged close to the runner and is arranged in a rectangular guide groove in the side surface of the runner; a cantilever shaft of a gear is arranged in a center hole of the runner and the end part is connected with the right end cover; the cantilever shaft and a ring cavity in the runner form a slideway; a cylindrical exciter made of a non-ferromagnetic material is arranged in the slideway; and exciting magnets are inlaid into two ends of the exciter. The runner-type piezoelectric beam energy harvester with the suspended shaft end has the features and advantages that a fixed support is not needed, the structure is simple and the rotating force on the exciter is small; the piezoelectric vibrators are reasonable in structure and the stresses of various points are the same after deformation; the piezoelectric vibrators are high in generating capacity, high in reliability and wide in effective band; and the runner-type piezoelectric beam energy harvester can be applied to the occasion of coaxial cantilever shaft gear and multi-gear as a standard component.

The invention discloses a leak-proof feeding device for plastic machinery production, which includes a base, and is characterized in that: a bearing above the base is connected with a turntable, and the inner side of the turntable is fixedly connected with a feeding bin, and the left and right sides of the upper end of the feeding bin are A telescopic plate is fixed, and an air pump is connected to the two telescopic plates. The inner wall of the feeding bin is fixed with a rotating shaft, and the middle bearing of the rotating shaft is connected to a stirring plate. The leak-proof plastic machinery production feeding device includes There is a feeding system, and the feeding system is electrically connected with the turntable, the inner wall of the feeding bin, the rotating shaft and the air pump respectively, and the feeding system includes a scanning module, a data transmission module, a conversion module and a control module, and the scanning module includes an imaging module and a data The judging module, the data transmission module includes a transmission module and a receiving module. The present invention has the characteristics of intelligent feeding and the function of detecting and mixing materials.

The invention relates to a large-stroke precision two-stage electric cylinder. The large-stroke precision two-stage electric cylinder comprises a two-stage piston assembly, an electric input assemblywhich provides power for the expansion and contraction of the two-stage piston assembly and a cylinder body assembly with the cross section being square, wherein the electric input assembly is fixed on the cylinder body assembly, the two-stage piston assembly is sleeved in the cylinder body assembly, one end of the two-stage piston assembly is in transmission connection with the electric input assembly, and the other end of the two-stage piston assembly stretches out of the cylinder body assembly. The large-stroke precision two-stage electric cylinder is characterized in that the two-stage piston assembly comprises a first-stage lead screw piston assembly which is in transmission connection with the electric input assembly and a second-stage lead screw piston assembly which is coaxially installed in the first-stage lead screw piston assembly, the first-stage lead screw piston assembly is in transmission connection with the second-stage lead screw piston assembly, the movement of a leadscrew of the first-stage lead screw piston assembly drives the second-stage lead screw piston assembly to synchronously move, and synchronous expansion and contraction of the first-stage lead screw piston assembly and the second-stage lead screw piston assembly are achieved. The large-stroke precision two-stage electric cylinder is small in installation space, capable of meeting large-stroke requirements, high in transmission speed, high in use reliability and high in durability and stroke precision.

The invention discloses an integrated automatic careful selection device and method for dried Chinese wolfberry fruits. The integrated automatic careful selection device comprises a shell and is characterized in that an end cover is connected to the upper portion of the shell through a bearing, filter discs are slidably connected to the inner walls of the left side and the right side of the interior of the shell, a material accumulation disc is fixedly connected to the lower portions of the filter discs, and a screening assembly is fixedly connected to the lower portion of the material accumulation disc; the right side of the material accumulation disc is connected with a material suction pump through a pipeline, the material suction pump is electrically connected with an external power source, the filter discs and the material accumulation disc are both made of elastic materials, the screening assembly comprises a motor, the right side of the motor is slidably connected with the inner wall of the shell, a first fluted disc is fixed to the left side of the motor, and the left side of the first fluted disc is slidably connected with the inner wall of the shell; and a second fluted disc is meshed with a gear above the first fluted disc, a volute spiral spring is arranged in the middle of the interior of the second fluted disc, and the left side and the right side of the second fluted disc are both slidably connected with the inner wall of the shell. The integrated automatic careful selection device has the beneficial effects that the screening effect is good, and high-efficiency dust removal is achieved.

The invention discloses an outdoor foldable fan. The outdoor foldable fan comprises a stator and a rotor of a motor, wherein the stator and the rotor can slide relative to each other. The rotor is provided with a polygonal through hole. A polygonal rotating shaft is arranged on the polygonal through hole. One end of the polygonal rotating shaft is connected with a front end face through a first bearing. The circumferential direction of the front end face is rotationally connected with one end of a plurality of front frameworks. The outer side of the stator is rotationally connected with one end of each of a plurality of back frameworks. The other end of each back framework is correspondingly and rotationally connected with the other end of the corresponding back framework. The portion, between the front end face and the motor, of the polygonal rotating shaft is rotationally provided with fan blades. The polygonal rotating shaft is provided with a protruding ring used for locating the fan blades. The other end of the polygonal rotating shaft is connected with a supporting rod through a second bearing. The supporting rod is identical with the polygonal rotating shaft in peripheral structure. The outer ring of the second bearing is rotationally connected with the supporting rod. The side face of the stator is provided with a clamping portion. The end of the supporting rod is provided with a drill bit. The outdoor foldable fan can be folded and is large in blowing capacity, convenient to carry and convenient to place and locate in various outdoor environments.