50results about How to "Realize synchronous drive" patented technology

The invention discloses a lifting linkage type valve device. The lifting linkage type valve device comprises a support, a lifting mechanism and a translational driving type protective mechanism, wherein a vertical beam is arranged at the middle part of the support, and the lifting mechanism and the translational driving type protective mechanism are correspondingly arranged on two sides of the vertical beam of the support; the translational driving type protective mechanism comprises a linkage pin, a sector gear and a rack; the linkage pin is fixedly arranged on one side of a supporting plate and extends horizontally; the sector gear is fixedly arranged on the support in a rotatable manner, and a guide groove matched with the linkage pin is formed in the sector gear; and the rack is connected with the sector gear in an engaged manner and is fixedly connected with an insulated valve. An executing mechanism is arranged on the liftable supporting plate, so that the height space is sufficiently utilized, and an actuating mechanism is simplified; and moreover, synchronous driving of a translational part to be driven is realized by using linkage of the lifting mechanism and the translational driving mechanism, so that the device is convenient in integral design, and the using safety is particularly improved.

The invention discloses a power takeoff device for oppositely-arranged double hydraulic pumps of a diesel engine. The power takeoff device comprises a hydraulic pump gear shaft, a hydraulic pump drive gear and a spline housing, wherein the hydraulic pump gear shaft is fixed to a gear chamber of the diesel engine, the hydraulic pump drive gear is provided with an internal spline and arranged on the hydraulic pump gear shaft in a sleeved mode after press fitting of a sliding bearing, the spline housing is provided with an internal spline and an external spline, and the external spline of the spline housing is meshed with the internal spline of the hydraulic pump drive gear. The hydraulic pumps can be oppositely connected to the two ends of the spline housing through a hydraulic pump installation hole in one end of the hydraulic pump gear shaft and a hydraulic pump installation hole in a gear chamber cover and meshed with the internal spline of the spline housing. The power takeoff device can achieve synchronous drive of the two hydraulic pumps, is simple in structure and convenient to install, and saves the space of the gear chamber of the diesel engine. In the use process, if one hydraulic pump goes wrong or is damaged, the hydraulic pump can be replaced independently, and therefore the maintenance cost is lowered.

The invention relates to a reinforcing structure after pile foundation excavation. The reinforcing structure comprises a frame body, the frame body comprises four connecting rods, each connecting rod comprises a fixed rod and movable rods which are connected to the two ends of each fixed rod in an inserted and sliding mode, each fixed rod is provided with an adjusting device used for driving the movable rods on the two sides to be located in each fixed rod and move at the same time, a mounting rod is fixedly arranged in the middle of each fixed rod, the length direction of each mounting rod is perpendicular to the length direction of the corresponding fixed rod, a movable plate is slidably arranged on each mounting rod in the length direction of the corresponding mounting rod, a supporting rod is hinged to each movable plate, a supporting plate used for abutting against the outer wall of a pile foundation is hinged to the end, away from each movable plate, of each supporting rod, and a driving device used for driving each movable plate to move in the length direction of each mounting rod is arranged on each mounting rod. The reinforcing structure has the advantage that the supporting effect on pile foundations with different diameters is improved.

The invention discloses a crawler-type magnetic adsorption detection robot walking mechanism which can walk on an overhead rail in an underground comprehensive pipe gallery and comprises a shell and crawler belts arranged on the two sides of the shell. The crawler belts on the same sides are connected through crawler wheels, the crawler wheels arranged on the two transverse sides are fixedly connected with the shell through power output shafts, the crawler belts are in a magnetic attraction walking mode, and the whole walking mechanism is tightly attracted to a pipe gallery overhead rail through a plurality of permanent magnets fixed to the crawler belts on the two sides. A motor is arranged in the shell and drives the walking mechanism to walk. A base is arranged at the top of the shell,and a sensor and a detection mechanism are borne on the base, so that when the robot walking mechanism walks on an overhead rail of the underground comprehensive pipe gallery, the robot walking mechanism can achieve detection operation on the underground comprehensive pipe gallery by carrying the corresponding detection device. The robot walking mechanism is simple in structure, and problems thata traditional detection mode is high in labor intensity, and detection risks exist are solved.

The invention discloses a mold opening and closing device of a bottle blowing machine and belongs to the technical field of plastic processing machinery. According to the mold opening and closing device, by arranging a supporting rod transmitting power, a link mechanism and a variable-distance guide groove, the power from a power source is resolved into the force in the perpendicular direction and the force in the horizontal direction, and therefore the power is synchronously supplied to a front mold plate, a back mold plate and a bottom mold plate; and in this way, synchronous drive of all the mold plates is achieved, and the time of the processes of opening and closing the mold is shortened. Meanwhile, the power is saved, and the production efficiency is improved.

The invention discloses a DC motor parallel control system and a current following control method, and the method comprises the steps: obtaining a reference initial current through five PI regulatorsaccording to a difference between a given reference rotating speed and an actual rotating speed; calculating a required reference current value from the reference initial current through a reference current reconstruction calculation module; obtaining a calculated current value from the current value the output end of a six-phase voltage source type inverter passes through a current reconstructioncalculation module; providing the difference value between the calculated current value and the reference current value for a hysteresis comparator to generate square wave signals with equal amplitude and unequal width; converting the square wave signals, by a PWM module, into a switching signal for driving an IGBT; transmitting a PWM signal to the six-phase voltage source type inverter module, controlling the five direct current motors to work normally by the six-phase voltage source type inverter module, and realizing four-quadrant operation of the motors. The invention provides a novel motor control method by adopting a reference current reconstruction technology, a current reconstruction technology and a hysteresis comparison technology.

The invention relates to an automatic lifting type flood control structure which comprises a flood control plate, the flood control plate comprises a fixed plate and a lifting plate, the fixed plate and the lifting plate are movably arranged, the fixed plate is fixed to a foundation, the lifting plate is fixedly connected with a guide rod, the guide rod is movably inserted into a guide hole, and the guide hole is fixedly connected with the lifting plate. The guide hole is formed in the fixing plate; the flood control plate is arranged on the dam, the height of the flood control plate can be increased, and the height of the flood control plate can be adaptively changed according to the rise of the water level, so that the efficient and timely flood control effect can be achieved, and potential safety hazards caused when manual flood control is needed when the height of the dam is operated at the water level can be avoided; in addition, the flood prevention plate is simple and reasonable in structural design and has higher practical value in actual application.

The invention relates to a water gate for intercepting garbage in a water conservancy project. The water gate comprises a water gate body and a conveying roller bed, wherein the conveying roller bed is inserted into wing walls on the two sides of a river channel in a rotating mode, two sets of shaft bodies are rotationally connected to the conveying roller bed, two sets of net chains are rotationally connected to the two sets of shaft bodies in a sleeving mode, a plurality of sets of loading hoppers are fixed on the two sets of net chains, the inclined lower end of the conveying roller bed faces the upstream of the water gate body, and a foam plate is fixed at the inclined lower end of the conveying roller bed; a conveying belt stretching across the river channel is installed on the river channel at the upstream position of the water gate body, a power device for driving the conveying roller bed and the conveying belt to rotate is installed on the ground, and the net chains continuously rotate anticlockwise, so that the loading hoppers grab and convey garbage floating on the water surface; and the conveying belt is located at the inclined upper end of the conveying roller bed, and the garbage is scattered on the conveying belt and is continuously conveyed to the ground on one side of the river channel. According to the water gate, the cleaning operation of the garbage in the river channel is realized, the probability that the garbage is blocked at the position of the water gate is reduced, and the normal drainage efficiency of the position of the water gate is guaranteed.

The invention discloses temperature-controlled color-changeable switchable glass. According to the key points, the glass comprises a base glass plate, a switchable glass plate, a mounting frame plate,supporting plates, clamping plates and clamping grooves, wherein the mounting frame plate is arranged at an edge of a mounting surface of the base glass plate, the supporting plates are oppositely arranged on the opposite inner frame walls of the mounting frame plate, a connecting frame is arranged on the peripheral end wall of the switchable glass plate, the distance between the side wall, awayfrom the base glass plate, of the mounting frame plate and the side walls, away from the base glass plate, of the supporting plates is equal to the thickness of the switchable glass plate and the thickness of the connecting frame, the clamping grooves are arranged on the four outer side walls of the connecting frame, push-pull grooves are formed in the sides, where the supporting plates are away from the base glass plate, of the inner side wall of the mounting frame plate, the clamping plates are slidably arranged in the push-pull grooves in the direction perpendicular to clamping groove openings through a push-pull assembly, and the clamping plates extending out of the push-pull grooves are clamped to the clamping grooves. According to the glass, the detachable connection between the switchable glass plate and the whole glass is realized, and the replacement of the switchable glass plate is facilitated.

The invention provides an intelligent fire emergency rescue auxiliary decision-making system. The intelligent fire emergency rescue auxiliary decision-making system comprises a robot and a display screen, wherein the robot structurally comprises a support, a motor, short drive handles, humerus connecting rods, ulna connecting rods, thighbone connecting rods, tibia triangular supports, fibula connecting rods, a right foot, a left foot, a circuit board, a camera and a communication antenna; the motor provides power, and connecting rod mechanisms constitute a left movement mechanism and a right movement mechanism; the left movement mechanism and the right movement mechanism of the robot are equivalent to two legs of the robot, the thighbone connecting rods are equivalent to thighs, and the tibia triangular supports are equivalent to shanks; driving force of the short drive handles is transferred to the thighbone connecting rods through the humerus connecting rods, equivalently driving the thighs to swing forward and backward; the tail ends of the ulna connecting rods are connected with the rear ends of the tibia triangular supports, equivalently driving the shanks to backwards lift and fall; the bottom ends of the fibula connecting rods are connected with the tail end of the right foot/left foot, equivalently controlling the tilting direction of the right foot/left foot by tendo calcanei; and the camera transmits collected fire interior image information to the outside display screen through the communication antenna.

The invention relates to an electrolytic aluminum processing technology which comprises the following steps: mixing electrolytes except aluminum oxide, dissolving the aluminum oxide in cryolite serving as a solvent for electrolytic reaction of the aluminum oxide, heating the electrolyte mixture except the aluminum oxide until the electrolyte mixture is in a molten state, and then adding a cryolite solution containing the aluminum oxide to obtain a melt; an electrode of an electrolytic bath is powered on, the melt obtained in the step A is placed in the electrolytic bath and then electrolyzed at the temperature of 800-820 DEG C, the current density is 1A/cm < 2 >, and molten aluminum obtained after electrolysis is obtained; an existing filtering device structure is improved, in the using process of the improved filtering device structure, the anti-blocking effect of the filtering net can be achieved, in this way, in the using process of the improved filtering device structure, filtering net holes cannot be blocked for a short time, and therefore the service life of the filtering net can be longer; therefore, in the actual use process, the production and maintenance cost can be reduced.

The invention provides a garment processing device. The processing device comprises a workbench, and further comprises an embossing mechanism arranged on the workbench and a rolling adjusting mechanism used for adjusting the height of a rolling gap away from the upper surface of the workbench so as to roll and flatten garment cloth guided to the embossing mechanism. By arranging the rolling adjusting mechanism, the rolling gap can be adaptively adjusted according to the garment cloth with different thicknesses, the rolling and flattening requirements of different garment cloth are improved, the applicability is improved, the cost for developing multiple sets of equipment is saved, and relatively, the occupied space of the multiple sets of equipment is reduced.

The invention discloses a pipeline external leakage detection robot walking mechanism which is suitable for pipeline detection of narrow underground spaces such as underground comprehensive pipe galleries. The pipeline external leakage detection robot walking mechanism is characterized by comprising a first shell (3) and a second shell (8), wherein the first shell (3) and the second shell (8) arefixedly connected through a plurality of hinge structures (4) and are symmetrical along the hinge structures (4), and magnetic wheels (1) are further symmetrically arranged on the two transverse sidesof the first shell (3) and the second shell (8); and a plurality of reserved bases (16) for bearing detection mechanisms or sensor devices are arranged at the top of the first shell (3) and the top of the second shell (8) correspondingly, and motors (15) are arranged in the first shell (3) and the second shell (8) correspondingly. The pipeline external leakage detection robot walking mechanism isdriven to be attracted to the exterior of a metal pipeline of the underground comprehensive pipe galleries and walk, and then pipeline external leakage is intelligently detected.

The invention belongs to the technical field of gear machining, and discloses a powder metallurgy gear rolling densification device. The powder metallurgy gear rolling densification device comprises a base, a first vertical plate, a second vertical plate, a first rotating shaft, a second rotating shaft and a third rotating shaft; the first vertical plate and the second vertical plate are arranged on the top of the base in parallel in the X-axis direction; the first rotating shaft, the second rotating shaft and the third rotating shaft are rotationally arranged between the first vertical plate and the second vertical plate; the first vertical plate is fixedly connected with the base, and the second vertical plate is slidably connected with the base in the Y-axis direction; and rolling dies are fixed to the first rotating shaft and the third rotating shaft, a gear workpiece is fixed to the second rotating shaft, and the two rolling dies clamp the gear workpiece and roll the gear workpiece in the rotating process, so that a compact layer is formed on the surface of the gear workpiece. In conclusion, densification machining of the gear workpiece is achieved in a symmetrical rolling manner, the principle is simple, and operation is convenient. In addition, the movable second vertical plate is further arranged in the whole device, so that feeding and discharging operation of the gear workpiece is more convenient.