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603results about How to "Increased operating comfort" patented technology

Piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper and control method thereof

The invention discloses a piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper which comprises a vibration damper body and a vibration damper controller. The vibration damper body comprises a cylinder barrel, a pressure supporting floating piston, a middle isolation floating piston, a piston rod, piezoelectric generation modules, a spring pressing plate, a force transfer spring, a spring clamping seat, a lower permanent magnet, a magnetic coil, an upper permanent magnet, a magnetism isolating plate, a piston, an excitation coil winding, an electromagnetic induction coil fixing rod and an electromagnetic induction coil. A control box is arranged on the outer wall of the cylinder barrel, the vibration damper controller is arranged inside the control box, and a rectifier, a storage battery charging circuit, a first controllable constant current source circuit and a second controllable constant current source circuit are further arranged inside the control box. The invention further discloses a control method of the piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper. The piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper has the piezoelectric and electromagnetic induction dual energy feedback function, can achieve not only a damping change function but also a rigidity change purpose, and has good vibration damping performance.
Owner:XIAN UNIV OF SCI & TECH

Sealing film, sealing assembly using sealing film and puncturing device using sealing assembly

InactiveCN108652713AReduce the real contact areaIncrease in circumferenceCannulasSurgical needlesHermetic sealEngineering
The invention discloses a sealing film for a puncturing device. The sealing film includes a proximal opening, a distal opening and a sealing wall extending from the distal opening to the proximal opening. The distal opening is formed by a sealing lip for accommodating an inserted apparatus and forming hermetic seal. The sealing wall comprises a plurality of corrugations circumscribing the distal opening and extending laterally from the distal opening, and the corrugations comprises corrugation peaks and corrugation valleys. The sealing wall further comprises at least two thickened portions, each thickened portion is disposed laterally between the two adjacent corresponding corrugations, and the thickened portions are located between the corresponding corrugation peaks and the correspondingcorrugation valleys. The corrugations can increase the circumferential perimeter, can reduce the wrapping area, and can reduce the true contact area between an instrument and the sealing film; and the sealing wall is further provided with the thickening portions, the thickening portions increase the axial tensile rigidity, greatly reduce the frictional resistance and improve the stick slip, and reduce the probability of occurrence of sealing film introversion.
Owner:FENGH MEDICAL CO LTD

Self-limiting electronic gear shifter

ActiveCN101922547AEnsure safetyIncreased front space and operator comfortGearing controlSelf limitingSelf locking
The invention discloses a self-limiting electronic gear shifter. The gear shifter mainly comprises a pedestal, a housing, a gear shift lever, a cam seat and a gear shift switch, wherein the housing is arranged on the pedestal to form a chamber; the cam seat and the gear shift switch are arranged in the chamber; the gear shift switch is contacted and matched with the cam seat; the gear shift leveris connected with the cam seat; the housing is provided with a sliding chute which is matched with the gear shift lever; the gear shifter is characterized in that the gear shift lever mainly comprises an outer rod capable of being pressed down and a connecting rod arranged in the outer rod; a spring is arranged between the top of the connecting rod and the outer rod, and the other end of the connecting rod is connected with the cam seat; a circular arc groove is also formed in the chamber; the outer rod is also connected with a limiting body which is also arranged in the circular arc groove; and the circular arc groove is provided with a limiting groove which is matched with the limiting body along a corresponding part of each gear position. The self-limiting electronic gear shifter of the invention has a self-locking function, so that the operating safety of vehicles is ensured, and good handfeel is achieved during gear shifting.
Owner:HANGCHA GRP

Partial discharge comprehensive itinerant detector for high voltage electric power equipment

ActiveCN103278751ARealize the comprehensive detection of partial dischargeImprove defect detection rateTesting dielectric strengthTransformerElectric power equipment
The invention discloses a partial discharge comprehensive itinerant detector for high voltage electric power equipment. The partial discharge comprehensive itinerant detector for the high voltage electric power equipment is characterized by comprising a host and a sensor group connected with the host, wherein the sensor group comprises a transient state ground potential sensor, an ultrahigh frequency electromagnetic wave sensor, a non-contacting ultrasonic sensor and a contacting ultrasonic sensor; the transient state ground potential sensor is used for detecting a current pulse signal on the shell of the electric power equipment; the ultrahigh frequency electromagnetic wave sensor is used for detecting an electromagnetic wave signal transmitted from the inside of the electric power equipment; the non-contacting ultrasonic sensor is used for detecting an ultrasonic wave signal transmitted from the inside of the electric power equipment; the contacting ultrasonic sensor is used for detecting shell vibration caused by the ultrasonic wave signal transmitted from the inside of the electric power equipment; and the transient state ground potential sensor, the ultrahigh frequency electromagnetic wave sensor, the non-contacting ultrasonic sensor and the contacting ultrasonic sensor are all connected with the host. According to the partial discharge comprehensive itinerant detector, a transformer, a composite apparatus (gas insulated switchgear) and a switch cabinet can be conveniently subjected to partial discharge electrification detection, and the partial discharge comprehensive itinerant detector for the high voltage electric power equipment has the outstanding advantages of convenience in carrying the instrument, as well as quickness and intellectualization in detection.
Owner:STATE GRID CORP OF CHINA +2

Rotary hydraulic system and construction machinery

The invention provides a rotary hydraulic system and construction machinery. The rotary hydraulic system comprises a rotary motor, a brake oil cylinder, a main valve, a shuttle valve and a brake anti-lock valve. The brake anti-lock valve includes a first check valve and a hydraulic-control selector valve. An oil return port T of the main valve is communicated with a hydraulic control end Y of the hydraulic-control selector valve. An oil inlet port P is communicated with an oil return port of the first check valve and a port B of the hydraulic-control selector valve synchronously. A hydraulic control end X of the hydraulic-control selector valve is communicated with a port A of the shuttle valve. The port A of the shuttle valve and an oil outlet port of the first check valve are communicated with the brake oil cylinder synchronously. The main valve is communicated with the oil inlet port P and the oil return port T while a valve core is positioned at the center. When a rotary mechanism is rapidly stopped, the hydraulic-control selector valve is closed, the oil inlet port P of the main valve is communicated with the brake oil cylinder through the first check valve to prevent a brake from being closed, and accordingly, only if the rotary mechanism shakes, the brake is not locked, sense of impact is greatly reduced, and operational performance and operational comfort of rotary actions are further improved.
Owner:SANY AUTOMOBILE HOISTING MACHINERY

No-deflection centering device

The invention relates to a centering device which is used for solving the problem that the deflection of the existing centering device influences the accuracy of measured data. A no-deflection centering device comprises a fixing bracket, a support frame and a connecting part, wherein the fixing bracket is a quadrilateral frame structure comprising an upper rod-like part and a lower rod-like part, which are in parallel, opposite grooves are arranged on opposite surfaces of the rod-like parts to clamp one shaft in two structures to be centered, the lower side surface of the lower rod-like part, corresponding to the center of the groove, is vertically extended downwards to form a fixing rod; a vertical support plate on the support frame, parallel to the fixing bracket, forms a right angled structure with a back opposite to the fixing frame together with a horizontal support plate, so as to bear the other shaft in the two structures to be centered; two ends of the connecting part are respectively connected with the lower end of the vertical support plate and the lower end of the fixing rod, the lower end of the fixing rod is vertically connected with an adjusting rod, a counter weight is sheathed on the adjusting rod, an end surface measuring instrument is arranged on the vertical support plate, and an annular surface measuring instrument is arranged on the horizontal support plate, in the way, the centering device can eliminate the effect of the deflection on the measuring results.
Owner:CHINA NUCLEAR IND 23 CONSTR

Permanent magnet synchronous motor direct torque control method based on model predictive control

The invention discloses a permanent magnet synchronous motor direct torque control method based on model predictive control, and belongs to the technical field of control. The invention aims to provide the manent magnet synchronous motor direct torque control method based on model predictive control, wherein by means of an electric vehicle wheel hub motor drive control method based on extended Kalman estimation and model predictive control, the defects in the prior art can be well overcome. According to the permanent magnet synchronous motor direct torque control method based on model predictive control, firstly, an extended Kalman principle is used for completing motor drive system estimator designing, secondly, torque and flux linkage values obtained by the estimator are used as feedbackvalues which are transferred to a motor control system controller along with reference set values, and finally, by solving an optimum control problem corresponding to a target function, fast accuratetracking control of motor torque and flux linkage is completed by the system. By means of the permanent magnet synchronous motor direct torque control method based on model predictive control, the problems of complex coordinate change and current magnitude coupling in a motor model are effectively solved, the system complexity is reduced, and dynamic response speed of the system and the intuitionism and the reliability of a system control effect are improved.
Owner:JILIN UNIV

Forklift gantry

The invention relates to a forklift gantry which comprises four classes of gantries and a goods fork frame, wherein two rear lifting oil cylinders are uniformly distributed on a connecting plate of the first class gantry, and the piston rod ends of the rear lifting oil cylinders are connected with the second class gantry; a second class chain wheel, a second class chain, the second class gantry and the first class gantry form a moving chain wheel group; the third class chain wheel, the third class chain, the second class gantry and the highest class gantry form a moving chain wheel group; andthe third class gantry and the highest class gantry are pulled by the chains to move relative to the first class gantry under the interaction of the rear lifting oil cylinders and the chains. Front lifting oil cylinders are uniformly distributed on the highest class gantry; the piston rod ends of the front lifting oil cylinders are provided with two chain wheels; and one ends of the two chains matched with the chain wheels are connected with the highest class gantry, and the other ends are connected with the rear part of the goods fork frame. The chain wheels, the chains, the highest class gantry and the goods fork frame form a moving chain wheel group; and the goods fork frame can move relative to the highest class gantry. The four groups of gantries are compactly distributed and are basically distributed in parallel, thereby ensuring minimal front suspension and favorable visual field.
Owner:ANHUI HELI CO LTD

Electric children safety structure of automobile door lock

The invention discloses an electric children safety structure of an automobile door lock, comprising a motor; the motor drives a worm and is connected with the worm; the worm is meshed with a worm gear; a first shaft is sleeved by the worm gear; the worm gear is provided with a first bulge matched with the first end of a pushing swing rod; a second shaft is sleeved by the pushing swing rod; the second end of the pushing swing rod is matched with a transitional rod; the transitional rod and an inward opening rod can slide mutually; the inward opening rod drives a handle inside an automobile and is connected with the handle inside the automobile; a third shaft is sleeved by the inward opening rod capable of overcoming a torsion of a second torsion spring and rotating around the axis of the third shaft; the motor drives the worm to rotate; the worm drives the worm gear to rotate; the first bulge on the worm gear toggles the pushing swing rod to rotate; and when the pushing swing rod drives the lower end of the traditional rod to be close to a plane where an opening connecting rod is located, an inward opening handle is pulled to drive the inward opening rod to overcome the torsion of the second torsion spring, so that the lower end of the transitional rod toggles the opening connecting rod to overcome a torsion of a first torsion spring to drive a pawl to rotate, and furthermore, the door lock is unlocked.
Owner:DEERFU VEHICLE LOCK ANTI THEFT SYST SHANGHAI

Excavator converging control system and excavator thereof

The invention discloses an excavator converging control system and an excavator thereof. The system comprises a pilot valve, a main valve and a converging valve, wherein the control end of the main valve is connected with the control end of the converging valve, and the output end of the pilot valve is respectively connected with the control ends of the main valve and the converging valve; a pressure sensor is connected with the control end of the main valve to detect the pressure value of the input end of the main valve and send the pressure value to a main controller; the main controller is connected with the pressure sensor and the control end of a proportional pressure reducing valve, acquires the operation state of the excavator according to the pressure value, and adjusts the opening of the proportional pressure reducing valve according to the speed of a movable arm or a bucket rod which corresponds to the preset operation state; and the input end of the proportional pressure reducing valve is respectively connected to an oil line between the output end of the pilot valve and the control end of the main valve as well as between the output end of the pilot valve and the control end of the converging valve, and the proportional pressure reducing valve is used for shunting the hydraulic oil which is output to the main valve and the merging valve by the pilot vavle under the control of the main controller. The action speed of the movable arm or the bucket rod of the excavator is coordinated with that of the other parts, so the working efficiency and the operation comfortability of the excavator are improved.
Owner:BEIQI FOTON MOTOR CO LTD

All-terrain high-speed telescopic arm forklift truck

The invention discloses a motor arranged on an automotive chassis, which is connected with a hydraulic mechanical combined transmission box through a hydraulic clutch mechanism and a mechanical clutch mechanism. The upper part of the front end of the hydraulic mechanical combined transmission box is provided with a variable pump and a triple gear working pump, and the lower part of the front end of the hydraulic mechanical combined transmission box is provided with a variable motor; the variable pump is connected with the variable motor through a hydraulic rubber pipe; the left side of the lower part of the front end and the rear end of the hydraulic mechanical combined transmission box is provided with a front transmission shaft and a rear transmission shaft, wherein the front transmission shaft is connected with a front axle, and the rear transmission shaft is connected with a rear axle; and the connection position of the front transmission shaft and the hydraulic mechanical combined transmission box is provided with an axle releasing mechanism. The adopted hydraulic mechanical combined transmission box has hydraulic transmission at a low speed, mechanical transmission at a high speed, maximum running speed of 80 km / h and double characteristics of engineering machinery and an automobile, not only meets the operation characteristics of four-wheel turn and four-wheel drive of the low-speed engineering machinery, but also has the high-speed running functions of two-wheel turn and two-wheel drive of the automobile.
Owner:ARCHITECTURAL ENG INST GENERAL LOGISTICS DEPT P L A
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