42results about How to "Reduce mechanical friction loss" patented technology

The invention provides a crawler wheel walking device capable of realizing wheel-crawler conversion. The crawler wheel walking device comprises a wheel-type drive system, a rotary high-pressure oil supply mechanism, a crawler belt drive system, a wheel-type power transmission system, a plurality of deformation adjusting mechanisms and a deformable crawler belt. The deformable crawler belt is positioned at the outermost layer of a walking device body and adopts flexible materials. The deformation adjusting mechanisms are uniformly arranged in the deformable crawler belt to control the walking device body to switch between a tire state and a crawler belt state. The rotary high-pressure oil supply mechanism provides deformation power for the deformation adjusting mechanisms, the crawler beltdrive system is located in the deformable crawler belt and is connected with teeth of the deformable crawler belt, and the wheel-type drive system is located at the axial center of the walking devicebody and is connected with the wheel-type power transmission system. The problem of poor adaptability of a traditional walking device to road conditions is solved. The designed crawler wheel walking device can switch the driving state according to different ground conditions, and thus the adaptability and trafficability of a vehicle to different ground conditions are improved.

An orbiting fluid machine has a feature that the speed of sliding movement is low, while vibrations are small, its performance is lowered when the rotational speed becomes high, and this problem is resolved by the following structure. A displacement fluid machine includes a displacer making an orbital motion within a casing into which a working fluid is drawn, thereby drawing and discharging the working fluid, in which an oil retaining mechanism or a seal mechanism is provided at each of opposite end surfaces of the displacer. This results that, axial gaps at the end surfaces of the displacer are effectively sealed so as to reduce a leakage loss, thereby achieving a high performance and a high reliability.

The invention discloses a pantograph pan with a flexible electric brush. The pantograph pan is mainly composed of three parts including a rigid conductive panel, the flexible electric brush and a bottom plate. The rigid conductive panel can be a pure-carbon plate or a metal impregnation carbon plate or a powder metallurgy plate or a carbon fiber enhanced composite carbon plate. The flexible electric brush is an electric brush made of conductive fibers. The conductive fibers can be carbon fibers, graphite fibers or metal fibers or fibers achieved by blending the carbon fibers, graphite fibers and metal fibers to a scale, and are also doped with high temperature resisting aramid fibers of a certain scale. The rigid conductive panel and the flexible electric brush both adhere to the bottom plate through conductive glue. When the pantograph pan slides forwards, a contact net makes full contact with the conductive fibers on the flexible electric brush besides making contact with the rigid conductive panel, multidirectional stereoscopic friction is formed, and the purpose of current-feeding power supply is achieved; electric arcs are greatly reduced, electric abrasion to pantograph catenary is reduced, the service life of a pantograph and the pantograph pan is prolonged, and the maintenance and replacement cost are decreased; the pantograph pan is suitable for not only low-speed trains but also high-speed trains.

The invention provides a sealed type cold compressor which is provided with a sealed shell, an electric motor and a gas compression device are arranged in the sealed shell; the gas compression device comprises a cylinder block, a crank shaft, a cylinder, a piston and accessories, the middle part of the cylinder block is provided with a crank shaft mounting hole, one end of the crank shaft is provided with an eccentric shaft which is connected with the piston arranged in the cylinder by a piston connecting bar, and the crank shaft is provided with a lubricant supply passage; the compressor is characterized in that: the crank shaft mounting hole is internally sheathed with a double row ball bearing subassembly, the crank shaft passes through the axle hole of the double row ball bearing subassembly, and the rotor of the electric motor is sheathed in the inner ring over-long section of the crank shaft or the double row ball bearing subassembly. The double row ball bearing subassembly adopted by the invention can bear the axial load and radial load simultaneously to cause a main bearing on the crank shaft to move in a rolling friction way in the axial direction and the radial direction, thus greatly reducing the mechanical friction loss of the main bearing to improve the compressor performance; the sealed type cold compressor has the advantages of simple structure and convenient assembly, etc.

The invention discloses a combustion engine camber drum shaft gas piston for improving the power mechanical efficiency, which is composed of piston skirt, packing ring and piston pin hole wall, wherein there is a open on the lateral surface of the piston skirt; the camber antifriction bearing is installed in the piston skirt; the camber antifriction bearing is fixed on the inner wall of the gas piston; The invention reduces the mechanical frictional loss and wasted power, which improves the power mechanical efficiency.

The invention relates to a six-face automatic linkage beautifying system for a cigarette carton box plastic packaging film, which comprises three continuous sections of beautifying mechanisms, namely a cigarette carton box end face beautifying mechanism, a cigarette carton box front and back face beautifying mechanism and a cigarette carton box side face beautifying mechanism in sequence, each beautifying channel comprises a pair of heating plates which are clamped oppositely, the heating plates are connected in a linkage mode, and the heating plates are controlled to be opened and closed through cams to beautify a group of opposite sides of the cigarette case. And the temperature of the heating plate is controlled to be just capable of hot ironing the plastic packaging film, so that the plastic packaging film at the corner of the cigarette case can be fitted, the surface is relatively smooth, the plastic packaging film can be neatly fitted on the surface of the cigarette case, and the appearance is attractive.

The invention relates to ultra-high efficiency tubular direct driving type generating equipment provided with an antigravity magnetic suspension bearing. The generating equipment has a structure which is as follows: a non-reversed resistance wind wheel structure converts wind energy into mechanical energy; a tubular direct driving generator converts the mechanical energy into the electric energy; a controller converts and stores the electric energy generated by the generator; the upper part of a power linear overlapping wind wheel matrix is provided with a wind direction helm; a converting controller is arranged between the ultra-high efficiency tubular direct driving generator and an electric network to realize the connection of the tubular direct driving generator on a wind wheel matrix rotating shaft and the converting and storing of the electric energy generated by the generator through the controller; the wind direction helm is arranged on a fixed bracket of the wind wheel matrix by a cam rotating mechanism; the wind wheel matrix consists of the fixed bracket, a vane supporting rotating mechanism arranged inside the fixed bracket, a wind-facing vane and a wind-back vane arranged on the rotating mechanism; the wind wheel matrix is connected with the tubular direct driving generator by a connecting mechanism; and an output end of the wind wheel matrix is connected with the electric network by a cable. The ultra-high efficiency tubular direct driving type generating equipment has huge economic benefits and social benefits.

The invention discloses a rigidity and flexibility combined pantograph slide plate device. The rigidity and flexibility combined pantograph slide plate device is formed by adding a flexible slide plate on the basis of a traditional rigid slide plate. The traditional rigid slide plate and the flexible slide plate are assembled on the same pantograph head. The flexible slide plate is made from a flexible conductive material. Good contact between the flexible slide plate and a contact net can be achieved under small contact force, and therefore the contact resistance of the slide plates is reduced, and electric heating ablation caused when local temperature is too high can be reduced. Contact between the flexible slide plate and the contact net can be kept at any time even in oscillation caused by a pantograph net, the offline possibility is reduced, and therefore electric arcs can be greatly reduced, and electric abrasion between the slide plates and the contact net is reduced. Meanwhile, the number of conductive spots is greatly increased due to the concave contact face of the flexible slide plate, the pressure of contact between the flexible slide plate and the pantograph net can be remarkably reduced compared with the traditional rigid slide plate, and therefore mechanical friction and loss of the rigid slide plate are reduced, the service life of the slide plates can be greatly prolonged, and maintenance and replacement cost is reduced. The rigidity and flexibility combined pantograph slide plate device is suitable for subways, light rails and other low-speed electric automobiles and is also suitable for high-speed trains.

The present invention relates to an apparatus (10) for generating X-rays. It is described to produce (210) with at least one power supply (40) a voltage between a cathode (20) and an anode (30). The cathode is positioned relative to the anode, and the cathode and anode are operable such that electrons emitted from the cathode interact with the anode with energies corresponding to the voltage, and wherein the electrons interact with the anode at a focal spot to generate X-rays. The at least one power supply provides (220) the cathode with a cathode current. An electron detector (50) is positioned (230) relative to the anode, and a backscatter electron signal is measured (240) from the anode. The measured backscatter electron signal is provided (250) to a processing unit (60). The processing unit determines (260) a cathode current correction and/or a correction to the voltage between the cathode and the anode, wherein the determination comprises utilization of the measured backscatter electron signal and a correlation between anode surface roughness and backscatter electron emission. The cathode current correction and/or the correction to the voltage between the cathode and the anode is provided (270) to the at least one power supply.

The invention belongs to the technical field of bearings and particularly relates to a porous metal matrix composite material bearing based on elastohydrodynamic lubrication. The porous metal matrix composite material bearing comprises a bearing inner ring, a rolling ball retainer and a bearing outer ring which are sequentially arranged from inside to outside, wherein the rolling ball retainer isinternally provided with a plurality of rolling balls which are uniformly distributed around the bearing inner ring; in addition, each rolling ball comprises a spherical matrix with a porous surface;an elastic reinforcement layer wraps the outer surface of each spherical matrix. According to the porous metal matrix composite material bearing disclosed by the invention, a high-pressure area is formed on micro contact area by adopting the spherical matrixes with the porous surface and the elastic reinforcement layers and an elastohydrodynamic lubrication principle; by adding a lubricating area,mechanical friction loss between the surfaces of rigid parts is reduced, and bearing capacity of the bearing is improved.

A hybrid oil pump system may include a motor connected to an oil pump and supplying torque, an engine disposed to supply torque to the oil pump, and a first one-way clutch disposed in a line through which the torque from the engine may be supplied to the oil pump, and selectively supplying the torque from the engine to the oil pump in accordance with a difference in RPM between the engine and the motor.

A dual crank mechanism is introduced for controlling and optimizing asymmetry in the motion profile of at least one piston of an opposed piston internal combustion (OPIC) engine piston pair. The dual crank mechanism produces a substantially asymmetrical non-sinusoidal, but periodic, reciprocating motion profile of the right-hand piston. A single crank mechanism is also introduced for controlling non-sinusoidal, but mostly symmetric, piston motion profile for one or both pistons of an opposed piston pair. The two novel crank mechanisms may be advantageously used exclusively or in combination in order to optimize the piston motion in a novel high efficiency OPIC engine having an externally mounted combustion chamber, an external compressing means for injecting compressed fuel mixtures directly into the external combustion chamber, and reducing cylinder porting to a single exhaust port per cylinder due to improved scavenging resulting from the asymmetric non-sinusoidal piston profiles produced by the novel crank mechanisms.

The invention provides a motor test system and method. The motor test system comprises a clamp for clamping a to-be-tested motor stator, a dynamometer for testing the power of the to-be-tested motor,a connection shaft connected with an extending shaft of the dynamometer and a bearing, wherein the bearing comprises a main shaft connected with the connection shaft and a shaft sleeve sleeving the main shaft; the shaft sleeve and the clamp are fixedly arranged; and the main shaft is suspended in the shaft sleeve. According to the motor test system and method provided in the invention, through suspending the main shaft connected with the rotor of the to-be-tested motor in the shaft sleeve, direct contact with the inner wall of the shaft sleeve in the case of rotating of the main shaft is avoided, the mechanical friction loss of the motor test system is reduced, and the stability and the consistency in the case of motor test can be improved.