1824 results about "Generatrix" patented technology

The image heating apparatus includes a flexible sleeve, a sliding member for sliding on the inner periphery of the sleeve, a back-up member for forming a nip portion together with the sliding member through the sleeve, wherein a recording material for bearing an image is heated while being held and conveyed by the nip portion and a regulation member set by facing the edge surface of the sleeve in the generatrix direction to regulate the movement of the sleeve in the generatrix direction, the regulation surface having a regulation surface with which the edge surface of the sleeve contacts when the sleeve moves in the generatrix direction, wherein the regulation surface of the regulation member has a curved-surface area in which a line when the regulation surface is cut at a virtual plane almost parallel with the nip portion is a curved line expanede toward the edge surface of the sleeve. Thereby, an image heating apparatus is provided which is able to restrain deterioration of the durability of the flexible sleeve.

Disclosed is a high-speed control method for a permanent magnet synchronous motor-compressor system, including the following steps: initial design is carried out; a motor is detected through DSP, including detecting the two-phase current of the stator of the motor, the voltage Udc of a DC generatrix; the voltage of a d-p shaft is calculated; faults of overcurrent, overpressure and undervoltage are detected; if any fault exists, the PWM pulse signals are blocked and then the control program is paused; if no fault exists, the following steps will be carried out; the rotating speed of the motor and the position of the rotor are identified in the process of speed-position estimation; the current and the voltage of the reference d-q shaft of the motor are calculated; switching signals of an inverter are acquired through haplotype over-modulation; the data are recorded and waveforms are displayed; judgment of whether to pause the control program is carried out; if not, the second step is carried out again; if yes, the control program will be paused. The control method applies haplotype over-modulation method into the permanent magnet synchronous motor-compressor system, realizing sensorless over-modulation to the synchronous motor-compressor vector control system.

The invention relates to a laterally-installed moving-type switch cabinet for receiving and distributing the electric energy, comprising a generatrix chamber, a breaker chamber, a relay meter chamber, a cable chamber and a voltage reliving chamber; the tri-phase polar pillar of the break is vertically distributed in the front and vertical direction of the switch cabinet; the moving direction of the hand cart is the vertical direction; the upper static contact head quietly through having touching the head box and fixing on generatrix bar directly of insulating sleeve function without the branch generatrix; the hand cart uses the electric or manual mechanism to move the hand cart entering the working position or the testing separating position; the breaker can process the electric opening and closing valve operation and the breaker processes the mechanical button operation via the emergency valve installed on the front plate, and the breaker can see the separating breaking opening of the main contact head via the observing window installed on the front plate.

Non-pneumatic resilient wheel (10), that is supported structurally and defines three perpendicular directions, circumferential (X), axial (Y) and radial (Z), this wheel comprising: a hub (11); an annular band referred to as a shear band (13) comprising at least one inner circumferential membrane (14) and one outer circumferential membrane (16) that are oriented in the circumferential direction X; and a plurality of support elements (12) that connect the hub (11) to the inner circumferential membrane (14)U. The two membranes (14, 16) are connected to one another by means of a series, that extends in the circumferential direction (X), of cylinders (15) referred to as connection cylinders, said connection cylinders (15) being non-touching in the circumferential direction X and having their generatrix oriented in the axial direction Y. The connection cylinders (15) are composite cylinders comprising fibres embedded in a resin matrix.

The present invention relates to test table for driving motor of hybrid electric vehicle to finish capability test of driving motor of hybrid electric vehicle and debugging function of control software. The table system has simple structure, convenient operation and maintains and high test precision. When the grades of motor and load voltage are identical, the system can work parallel with DC generatrix and feed back energy, the energy lose is less, the power supply need to provide system loss energy is about 10% to 20%, the cost is reduced greatly and the requirement of capacity of power supply is little. When the grades of motor and load voltage aren't identical, two complexions are happened, when motor is as driver, energy is applied to load resistance box by dynamometer system or power supply; when the motor is as generator, the energy is applied to load resistance box by power supply.

A fuzing system for non-spinning or substantially non-spinning weapons is implemented by means of wide angle optics providing at least forward-hemisphere coverage, an array of infrared detectors and a microprocessor for image and data processing, aim-point selection, directional-warhead aiming and skewed-cone fuzing. The skewed-cone fuzing has a generatrix which is the vector sum of missile velocity, warhead velocity and the negative of target velocity.

The invention provides a dodging special-shaped lens used for shaping semiconductor laser leams. The lens comprises an entrance face receiving laser injection and an exit face allowing laser ejection, the entrance face which is a half-cylindrical curved surface and the exit face which is an aspheric surface are arranged oppositely, and the distance between two ends of a generatrix of the aspheric surface is larger than that of the half-cylindrical surface, so that lasers injected through the entrance face are enabled to be wholly injected onto the exit face. The dodging special-shaped lens is simple in structure, easy for batch processing, low in cost and especially capable of well realizing adjusting of divergence angles of laser beams output by semiconductor lasers of various wavelengths and homogenized adjusting of Gaussian curve distribution of light energy output by lasers, and utilization rate of laser energy is improved while good dodging and aberration-eliminating performances are provided.

The invention discloses a hydro-mechanical deep drawing forming method capable of improving surface precision of a large-scale thin-wall curved-surface part, and relates to hydro-mechanical deep drawing forming methods. The problems that the curved-surface part is prone to be locally wrinkled and the surface precision is affected in the deep drawing process are solved. Concentric circles with certain distances are carved in the upper surface of an auxiliary forming sheet, the auxiliary forming sheet and a target forming sheet are stacked on a female die, and deep drawing forming is carried out on the auxiliary forming sheet and the target forming sheet. A gap generated by resilience of the auxiliary forming sheet and resilience of the target forming sheet is utilized for separating a deep drawing piece. The diameters and the thicknesses of the concentric circles of the deep drawing piece of the auxiliary forming sheet are measured. Normal inside offsetting is carried out on a molded surface generatrix of an initial deep drawing male die at the corresponding position. Fitting is carried out on an offset point, and the surface generatrix considering deformation and thinning of the auxiliary forming sheet can be obtained. According to the fitted surface generatrix, the initial deep drawing male die is finished, and an ideal deep drawing male die surface is obtained. Deep drawing forming and separation of the auxiliary forming sheet and the target forming sheet are carried out again, and the large-scale thin-wall curved-surface part with improved surface precision can be obtained.

The invention discloses a photovoltaic power-generating maximal power tracking controlling device which is on the basis of digital signal processing device, the device comprises a direct current converter, a voltage and electric current detecting module, a controlling module and a driving and protecting module, wherein the input end of the direct current converter is connected with the output end of a solar battery array, the output end is connected with the input end of a grid-connected inverter through a direct current generatrix, the grid-connected inverter is connected with an electric net, the input end of the voltage and electric current detecting module is connected with the output end of the voltage and electric current detecting module, the output end of the voltage and electric current detecting module is connected with the input end of the controlling module, the output end the controlling module is connected with the input end of the driving and protecting module, and the output end of the driving and protecting module is connected with a grid electrode G of a isolated-gate bipolar field effect transistor of the direct current converter. The invention has the advantages of low cost, which is easy to popularize and use, reduces the difficulty of the system controlling realization, and increases controlling effect. The installation of the invention is flexible, maintenance is convenient, and the influence of a single branch road fault can be reduced in maximum limit.

An earth boring drill bit is constructed having rotatable cutter for forming a borehole in earth. At least one circumferential row of cutting elements is optimized to create overbreak of rock and eliminate tracking, wherein selected pitches have mathematically determined pairs and the absolute difference between the selected pitch and its pair is greater than 10% of the difference between maximum and minimum pitch for that circumferential row. Furthermore, cutting elements are placed along pre-selected generatrices with deviation from said generatrices, which is less than half the maximum pitch of circumferential rows occupied by said cutting element. The present invention eliminates tracking and reduces detrimental axial resonance frequency vibration while reducing cutting element count, including tungsten-carbide inserts, as compared to conventional roller cutter drill bits used for oil, gas and shot hole drilling wells and simultaneously increases footage drilled, drilling speed, and durability.

Disclosed is a large radial-axial ring rolling machine. A radial rolling portion is provided with an up-drawing core roller shaft mechanism and a four-post vertical double-acting mechanism, and an axial rolling portion overcomes space limitations and is provided with a lower conical roller driving motor in a forward direction. A slider of the radial rolling portion comprises four guide posts, a fixed frame, a movable frame and the like, all parts are simple in structure, regular in appearance, easy in machining and convenient in assembly, and respective action of vertical support of a core roller is ensured, namely the technical conception of vertical double acting is realized. By the aid of the large radial-axial ring rolling machine, blanks and finished products can horizontally enter and exit the machine, difficulty in feeding and discharging is reduced, a production line can be formed to realize automated feeding and discharging, and the problem of bottleneck in improvement of working efficiency is solved. As the axial rolling portion is provided with the lower conical roller driving motor in the forward direction, assembly difficulty in mounting the high-power motor is greatly reduced, lubricating conditions of a rotating component are greatly improved when the motor works, and the service life of the motor is prolonged. By the aid of the motor mounted in the forward direction, the size of the machine below a horizontal plane of a generatrix on a lower conical roller is reduced, so that the pit depth of a foundation of the portion is decreased.

A three-phase photovoltaic interconnected device having both reaction and harmonic compensation function, and belongs to the field of multi-functional photovoltaic interconnected device technology. The characteristic is: the main power circuit of this device is composed of the photovoltaic array, the interconnected inverter and interconnected filter sensor. The structure of the inverter has many kinds of patterns, such as the two level structure, the three level structure, the three-phase generatrix capacitance separated chain structure with transformation, the three-phase union capacitance chain structure with transformation and the chain structure without transformation. This device can emit the power to the electric net, and can in time compensate the reaction and harmonic wave of the current in the net. This invention increases the utilization ratio of the solar battery board of photovoltaic electricity generation, and meanwhile it solves the problem of the working method of the photovoltaic system in the bad lighting conditions, that is, the system will not be left unused and compensate the harmonic wave and reaction of the electric net.

The invention discloses a machining and welding process of a large sealed head. The machining and welding process comprises the following steps: 1) a lobe die is machined; 2) a lobe is punched for forming; 3) a welding groove of the lobe is made, assembled and welded; and a smooth curve is drawn between the lobe generatrix and the sealed head vertex after assembling and welding; a machining die of a top round plate is made according to the smooth curve, and the top round plate is formed by pressing the machining die; the welding groove is machined; the top round plate and the lobe are welded. The machining and welding process of the large sealed head has simple operating steps, and can eliminate the deformation near a butt seam, and the sealed head welded by the machining and welding process has nice appearance and good stress.

A rotatable tool for chip removing machining, including a basic body having front and rear ends between which there extends a first geometrical center axis (C1) around which the basic body is rotatable in a predetermined direction of rotation, and a loose top having front and rear ends between which a second geometrical center axis (C2) extends. The front end of the basic body includes a jaw, which is delimited by two drivers and an intermediate bottom and in which a part of the loose top is received. A centering pin protrudes axially rearward from the loose top and is inserted in an axial center hole, which mouths in the bottom of the jaw and in which a threaded hole mouths for a screw co-operating with the center pin. The center hole includes a cylindrical support surface, which is concentric with the center axis (C1) of the basic body and against which the centering pin of the loose top is pressed by the screw. The centering pin of the loose top includes first and second diametrically opposed, external surfaces, each having an axial extension and a peripheral extension, the first external surface forming a contact surface that is pressed against the support surface of the center hole and extends tangentially between two axially extending boundary generatrices, which are situated along an imaginary circumscribed circle (S2) having a center (MP2) coinciding with the center axis (C2) of the loose top, and between which an arc angle (β) is less than 180°, the second external surface forming a clearance surface that lacks contact with the inside of the center hole as a consequence of the cross-sectional area of the centering pin being smaller than the cross-sectional area of the center hole. The circumscribed circle (S2) has a radius (r2) that is equally great as the radius (r1) of an inscribed circle (S1) along the cylindrical support surface of the center hole. A greatest radial distance (RD2) between the center axis (C2) of the loose top and a point on the clearance surface of the centering pin is greater than the radius (r2) of the circumscribed circle (S2) but smaller than a corresponding distance (RD1) between the center axis (C1) of the basic body and a clearance surface situated in the center hole and opposite the support surface.

A fixing device includes a cylindrical film, a planar heater, a heat conduction member, a supporting member, a limiting member for limiting heater end portions with respect to a generatrix direction of the film so as to prevent the end portions from moving in a heater thickness direction relative to the supporting member, and a pressing member. A fixing device state is switchable between a first state in which a press-contact force in the nip is enough to fix the toner image and a second state in which the press-contact force in the nip is smaller than the press-contact force in the first state. A surface where the supporting member opposes the heat conduction member has a shape such that with respect to the generatrix direction, a central portion of the film is projected toward the pressing member than an end portion of the film.

The invention discloses a spin-free stepless transmission unit and aims to provide a spin-free stepless transmission unit which can avoid loss of spin efficiency in certain range of gear ratio. The spin-free stepless transmission unit comprises a spin-free input cone disc (5), a spin-free output cone disc (7) and a spin-free idler wheel (6) which are pressed and in contact by means of clamping force; power is transmitted by traction; speed regulation is realized by swinging the idler wheel by a certain angle; generatrices of rotating curved surfaces of the spin-free input cone disc (5) and the spin-free output cone disc (7) are a logarithmic curve. In a speed regulation process, the rotating axes of the spin-free input cone disc (5), the spin-free output cone disc (7) and the spin-free idler wheel (6) of the spin-free stepless transmission unit and a common tangent of contact points are intersected at one point. The spin-free stepless transmission unit is used for replacing stepless transmission units in various annular stepless transmissions.

The invention discloses a depth aperture internal diameter measurement device, comprising a tapered block, a sleeve, three measurement rods, a spring, a push rod, a sleeve rod, a thread sleeve rod, a three-claw chuck and an internal diameter dial indicator. The conical surface of the tapered block is uniformly provided with three sliding grooves which are formed along the generatrix direction of the tapered block; the included angle between each sliding groove and the axis of the tapered block is 45 degree; the wall of the sleeve is provided with three through holes which are uniformly distributed along the circumference; three measurement rods pass through the through hole in the wall of the sleeve; and one end of the measurement rod is clamped inside a sliding groove. In the invention, the included angle between the sliding groove and the axis of the tapered block is 45 degrees and the displacement of the measurement rod along the radial direction is turned into an axial direction, which avoids the intermediate transfer between the levers in the traditional measurement, has more accurate measurement and can measure the maximum and minimum diameter of any cross section.

A fixing apparatus for fixing a toner image to a recording material includes a cylindrical film, a heater configured to make contact with the film, the heater including a substrate and a heat generation resistor formed on the substrate, and a heat conduction member configured to make contact with a surface of the heater opposite to a surface thereof being in contact with the film, the heat conduction member having a higher thermal conductivity than that of the substrate, and being divided into parts in a generatrix direction of the film. The toner image formed on the recording material is fixed on the recording material by using heat of the film, and one of the parts of the heat conduction member is configured to make contact with the heater continuously from a center to an end of a heat generation region of the heater in the generatrix direction.

The invention provides a dual feed-in DC transmission method, belonging to the distribution technical field. The invention is used for solving the operation reliability of the high-voltage DC transmission. The technical proposal is that an HVDC subsystem and a VSC-HVDC subsystem are connected on the same generatrix of a transmission AC system in parallel or respectively connected with two substations which are very closely connected with each other electrically; the HVDC subsystem consists of an AC system S1 at a sending end, a system resistance Zs1, a converter transformer Ts1, an HVDC converter and a transmission line DC1, and a converter transformer (Tr1); the VSC-HVDC subsystem consists of an AC system S2 at the sending end, a system resistance Zs2, a converter transformer Ts, a VSC-HVDC converter and a transmission line DC2, and a converter transformer (Tr2). Compared with the existing HVDC system, the invention can effectively reduce the possibility that steering failure occurs to the HVDC sub-system inverter, and improves the operation reliability of the HVDC subsystem.