372 results about "Rotation system" patented technology

An X-ray CT apparatus takes a short time for image processings in irradiating a cone beam X-ray to the whole jaw, including a dental arc, and to a local region, and to obtain a panoramic image showing conditions of a dental row. The apparatus includes, a rotative arm suspended at one end of a support column, and an X-ray generating device and a two-dimensional X-ray detecting device oppositely fixed to respective ends of the rotative arm. The rotative arm is supported via a dual rotation system. An object to be examined sits on a chair which is movable upward and downward, and an examining region is adjusted to the height of the imaging center of the imaging apparatus. The object's head is fixed by a fine-adjustable head holder. Imaging is performed so that the distance between rotation centers of the two rotation systems substantially coincides with the object's dental arc.

Systems and methods for authenticating key rotation communications. Key rotation communications can include a key counter known to both a headend device and a station. Comparison between a local key counter and the key counter included in the key rotation communication can be used to authenticate the key rotation communication.

An improved windshield wiper blade assembly having a resilient windscreen wiping element and further comprising a longitudinal passage there through. A support beam having a predetermined curvature and shape is positioned there within the passage having a generally complementary cross section to the longitudinal passage, preventing the rotational twisting of the resilient element around the beam. A further embodiment comprises a longitudinal fluid passage along the support beam in fluid connection to a windshield fluid supply. A plurality of apertures through the resilient member in connection with the fluid passage provide for the selective discharge of the fluid upon the windscreen. A still further embodiment comprises a wind deflector portion running at least partially along the resilient member for enhanced prevention of any twisting of the resilient member around the beam and increased downward force of the wiper assembly against the windscreen.

An X-ray CT apparatus takes a short time for image processings in irradiating a cone beam X-ray to the whole jaw, including a dental arc, and to a local region, and to obtain a panoramic image showing conditions of a dental row. The apparatus includes, a rotative arm suspended at one end of a support column, and an X-ray generating device and a two-dimensional X-ray detecting device oppositely fixed to respective ends of the rotative arm. The rotative arm is supported via a dual rotation system. An object to be examined sits on a chair which is movable upward and downward, and an examining region is adjusted to the height of the imaging center of the imaging apparatus. The object's head is fixed by a fine-adjustable head holder. Imaging is performed so that the distance between rotation centers of the two rotation systems substantially coincides with the object's dental arc.

A rotor hub fairing system includes an upper hub fairing, a lower hub fairing and a shaft fairing therebetween. The rotor hub fairing system is attached to the counter-rotating, coaxial rotor system through a bearing arrangement such that the shaft fairing may be positioned at an azimuthal position about the main rotor axis of rotation relative the airframe by a de-rotation system. The de-rotation system controls the position of the shaft fairing about the axis of rotation such that the shaft fairing is prevented from rotating freely in unison with either shaft as may otherwise result during some flight regimes.

A fiber optic connector assembly includes two connectors on fiber optic cables joined together by a clip having a trigger arm and a clip body. The trigger arm extends from the clip body at a shallow angle. The shallow angle of the trigger arm effectively reduces an amount of normal force required to activate latch mechanisms on the connectors. The clip is sandwiched between a connector housing and a boot, inhibiting the clip from axially translating relative to the connector assembly. The clip further includes an anti-rotation system to inhibit rotation of the connector assembly relative to the clip.

A rotor hub fairing system includes an upper hub fairing, a lower hub fairing and a shaft fairing therebetween. The rotor hub fairing system is attached to the counter-rotating, coaxial rotor system through a bearing arrangement such that the shaft fairing may be positioned at an azimuthal position about the main rotor axis of rotation relative the airframe by a de-rotation system. The de-rotation system controls the position of the shaft fairing about the axis of rotation such that the shaft fairing is prevented from rotating freely in unison with either shaft as may otherwise result during some flight regimes.

The invention discloses an automatic spiral hole-milling unit comprising a cutter rotation system, a radial deflection system, a revolution system and a sleeve with an inner hole. The axis of the inner hole of the sleeve is eccentrically arranged relative to the axis of an outer circumference of the sleeve. A stand is connected outside the sleeve. The cutter rotation system comprises a drive unit with a cylindrical shell. The drive unit can be rotatably arranged inside the inner hole of the sleeve. An output shaft of the drive unit is connected with a clamping apparatus holding a cutter. The output shaft of the drive unit is in offset arrangement relative to the axis of the shell of the drive unit. The radial deflection system comprises a stepping motor with an electromagnetic brake. A flange of the stepping motor is fixedly connected with the sleeve, and an output shaft of the stepping motor is fixedly connected with the shell of the drive unit coaxially. The revolution system comprises an electric rotating motor; the inner ring of the electric rotating motor is fixedly connected on the sleeve, and the outer ring of the electric rotating motor is fixed on the frame. When used for processing of high-strength materials difficult to cut and process, the automatic spiral hole-milling unit obviously improves the processing efficiency and the processing quality.

A drive control device of a DC brushless multi-phase motor performs the speed control of the motor in place microprocessor, the burden on the microprocessor is relieved. The drive control device detects a zero crossing point of the back electromotive force in the non-energizing phase to perform the energizing switching to the coils by the PLL control, and includes a current detection circuit that detects currents flowing through the coils to perform the speed control of the motor based on the detected currents. The drive control device also, compares outputs from speed error detection circuit with outputs from the current detection circuit to determine the currents to be made to flow through the coils, and thereby controls the current output circuit.

A screen picture rotation method comprises a first detection step, a second detection step and a control step. The first detection step includes that during the operation from the starting to the closing of an electronic device, whether a screen of the electronic device is laid horizontally is detected in real time through an electronic level meter in the electronic device; the second detection step includes when the screen is detected to be horizontally laid continuously, and the rotation direction and the angle of the screen are detected in real time through an electronic orienting device in the electronic device; and the control step includes that when the detected rotation direction of the screen reaches a preset switching value, a picture displayed by the screen is controlled to rotate by 90 degrees relative to the screen to the direction opposite to the rotation direction. The invention further provides a screen picture rotation system. According to the screen picture rotation method and the system, automatic switchover between horizontal screen display and vertical screen display of the screen can be achieved in the condition that the screen is horizontally laid.

The invention discloses a machine vision based full-automatic rotation printed product defect detection device which comprises an industrial control computer, supporting facilities of the industrial control computer, an image defect detection software system, a signal transmission unit, an image collection unit, a loading manipulator system, an unloading manipulator system and a product clamping rotation system; the industrial control computer is electrically connected with the image collection unit through the signal transmission unit; the image collection unit is formed by combining an image collection processing card, a CCD industrial camera, an optical lens and a detection light source together; the signal transmission unit is formed by three parts including an I / O (input / output) card, a synchronous card and a rotary encoder; and the product clamping rotation system is mainly used for fixing a product and driving the product to rotate. The machine vision based full-automatic rotation printed product defect detection device has the characteristics of no contact, high detection precision, rapidness, accuracy, high repeatability and high automation degree, relieves the manual detection pressure, solves various problems in manual detection, improves the detection quality, and increases the detection speed.

This invention relates to one motor aid rotation system life test bench, which comprises tested EPS sample, signal generation module, display meter module and load device, wherein, the EPS sample comprises rotation disc, rotation part, rotation sensor and motor bus and controller; controller is to send the voltage signal into motor bus and to sensor with work power and to send the fault signal into display meter module; motor bus is connected with mechanic system through acceleration device with output end connected with load device; signal generation module is connected to controller, display device module.

A PDC drilling property determination test device consists of a rack, a simulation drill string, a simulation drill bit, a water inlet, a rock sample holding system, a load loading system, a rotation system, a data acquisition unit, a computer, a console and other parts. The test device is characterized in that the simulation drill string, the drill bit, the rock sample holding system, the load loading system and the rotation system are arranged on the rack; the rotation system, the rock sample holding system, the load loading system and the like are all connected with the data acquisition unit and the computer through shielding signal wires; the console is connected with the computer, the rotation system, the rock sample holding system, the load loading system and the like through control wires. The test device can use a minitype PDC simulation drill bit for test of drilling and milling in rock and has the advantage of truly reflecting the overall engineering index of characteristic of drilling stratum rock with test-used PDC as cutting teeth under the state of stress and rotation accompanied by irregular vibration and impact.

A surgical stapling apparatus. Various embodiments include a rotatable elongated body that extends from a rotatable shroud on handle assembly and has a distal end configured for attachment to a disposable loading unit. The apparatus further includes a lockable rotation system for selectively locking the rotatable shroud to prevent rotation thereof about a longitudinal axis.

The invention discloses an electric vehicle with a traveling reminder and a working method thereof and relates to the technical field of electric vehicles. The electric vehicle comprises a power drive system (1) comprising a drive-control circuit (3), a speed-governing operating mechanism (4) and a rotation system (5). The electric vehicle is characterized in that the traveling reminder (6) which simulates the traveling sound and / or vibration law of diesel motor vehicle according to the working condition of the power drive system (1) to perform traveling sound and / or vibration reminding is arranged and is provided with a signal sensor (7), a loudspeaker (8) and / or a vibrator (9) which are mutually connected or combined, and the signal sensor (7) is combined with the power drive system (1). During traveling, the electric vehicle can provide relatively quiet acoustical and / or haptical reminding for a driver or passengers, effectively stop traffic and driving potential safety hazard, satisfy the pleasant sensation and enjoyment in driving and is suitable for standardized generalization and application.

The invention discloses a geometric coordinate transformation guide control method for achieving positioning rotation of a dynamic positioning ship. The geometric coordinate transformation guide control method for achieving positioning rotation of the dynamic positioning ship comprises the steps of (1) setting target heading of the dynamic positioning ship and a hull coordinate of the center of rotation, calculating an expected track of the dynamic positioning ship in the process of positioning rotation by combining a mathematic model of movement of the dynamic positioning ship and introducing a geometric coordinate transformation guide strategy, (2) calculating an expected heading and an expected position of the dynamic positioning ship at the current moment, and (3) applying a PID control algorithm to obtain force and torque needed for controlling longitudinal movement, transverse movement and yawing of the dynamic positioning ship to enable the dynamic positioning ship to reach the expected position and the expected heading so as to achieve the positioning rotation, of the dynamic positioning ship, around the center of the rotation according to the difference between an actual position at the current moment and the expected position and the difference between an actual heading at the current moment and the expected heading. The geometric coordinate transformation guide control method for achieving positioning rotation of the dynamic positioning ship does not need to change a thrust distribution center, can ensure the fact that a positioning rotation system is in a closed-loop control loop, improves accuracy of control, and is simple and practicable in process of calculation, and applicable to operation of ocean engineering.

The invention discloses a rotation tractor on a plastic pipe production line, comprising a traction system; the traction system comprises a traction crawler (7) which is arranged on a crawler frame (8) and a driving mechanism (9) which drives the traction crawler (7); the invention adopts two or more sets of the traction systems which are completely the same; furthermore, the rotation tractor is provided with a rotation system; each set of traction system is connected with the rotation system. By installing a plurality of traction crawlers in the invention, each crawler is independently driven by a motor, and the driving system thereof is directly arranged on the side plate of the crawler frame and directly drives a traction chain wheel, therefore the structure is compact and simple. Lifting sliding seats at two ends of the crawler frame are respectively arranged on a front rotation disc and a rear rotation disc; each rotation disc is supported and positioned by three bearings which are uniformly distributed on the circumference. The rotation tractor of the invention can be used for producing a spiral hush pipe, with an extrusion die head which has a normal structure, and fully solves the problems of material leakage and material accumulation of rotation die head.

The invention discloses a multi-degree-of-freedom active type wave compensation simulator based on a parallel mechanism. A hydraulic cylinder drives a six-degree-of-freedom parallel platform to move, so that the motions of a supply ship and a ship to be supplied affected by wave are completely simulated; a hydraulic motor is used as a rotation system of a power supply to drive a wave compensation winch and a crane, so that the situation that cargoes are rotated at a certain angel from the supply ship and are then lifted and put to the ship to be supplied through wave compensation is simulated; and a wave compensation terminal parallel platform is used for eliminating the shaking of the crane during a rotation process and carrying out multi-degree-of-freedom wave compensation, so that the cargo supply between the two ships is finally realized. According to the multi-degree-of-freedom active type wave compensation simulator based on the parallel mechanism provided by the invention, under the drive of the hydraulic cylinder and the hydraulic motor, the simulator has the characteristic that cargo lifting and putting between the two ships and wave compensation supply thereof can be simulated visually, and can be applied in the development and the performance test of a wave compensator.

The invention discloses a balance point Halo orbit phasing orbit transfer method taking the time constraint into consideration, relates to a Halo orbit phasing orbit transfer method based on an earth-moon three-body dynamic model and belongs to the technical field of aerospace. According to the method, a dynamic equation is established under a restrictive three-body model formed by the earth, the moon and the star, and a Halo orbit near the point L2 is generated under an earth-moon rotation system; the Halo orbit initial phase position of a detector and the phase position difference needing to be changed are determined, and the optimal fuel phasing orbit meeting the phase position constraint condition and the transfer time constraint condition is obtained through an optimization algorithm with the initial anchoring time and transfer time as optimization variables; and the time difference delta t, the task Halo orbit or the upper limit tmax of the transfer time are adjusted according to the task which the detector needs to fulfill, and the orbit shadow detection avoiding task or the spatial intersection detection task of the detector on the Halo orbit is fulfilled. The method can obtain the optimal fuel phasing orbit meeting the phase position constraint condition and the transfer time constraint condition, and has the advantages of good convergence, high flexibility and the like.

An anti-rotation system for use in retaining a threaded connection between a pin and a box. The anti-rotation system includes a key that sets in a recess formed in one of the box or pin. The key is selectively in contact with one of the other of the box or pin, and is activated when the threaded connection begins to decouple. The key is profiled and operates in a cam like fashion to wedge itself between the box and pin when these members begin to decouple and prevents further relative rotation.

A flexible fixture for batch machining of shaft workpieces comprises a fixture bottom plate, a rotation system, centering, positioning and clamping mechanisms, an auxiliary support mechanism and floating positioning devices; during using, five degrees of freedom of multiple machined workpieces can be limited simultaneously after matching of the centering, positioning and clamping mechanisms and the floating positioning devices, and the auxiliary support mechanism is used for performing auxiliary support on to-be-machined areas of the workpieces. The fixture is adopted for batch mounting of 10 long and thin shaft workpieces with the diameter of phi 10 mm-phi 30 mm and the length of 100-800 mm and realizes technological processes of milling, drilling, expanding, reaming, boring and the like on equipment of a vertical machining center. The flexible fixture has the advantages as follows: 1, increase and decrease of the number of the mounted workpieces, range extension of the diameter of the workpieces and range extension of the length of the workpieces can be realized through replacement of part of mechanical workpieces; 2, 2 servo motors are additionally arranged on the fixture on the vertical machining center with relatively lower cost, and batch machining of the long and thin shaft workpieces is realized.

The invention discloses a bridge rotation constructing process. A rotation system which is easy and convenient to manufacture, install and debug, and is safe, reliable and universal is researched. The rotation system mainly comprises a rotating hinge and a traction system. The process comprises the following steps of: realizing the bridge rotation firstly; and unloading the rotor system by using a hydraulic synchronous jacking technique, so that cyclic utilization of the rotation system is realized. The invention further discloses a rotation system, which comprises an upper rotating disk, a lower rotating disk, a jacking system, a horizontal fastening mechanism and a traction device, wherein the upper rotating disk and the lower rotating disk are rotationally connected relatively; the traction device is fixedly arranged on the lower rotating disk, and is used for driving the upper rotating disk to rotate; the horizontal fastening mechanism is connected with the lower rotating disk; and the jacking system is independently arranged on or arranged on the lower rotating disk. The rotation system has the advantages that the rotation system can be recycled after construction, so that the construction cost is lowered; and the rotation system is simple in structure, and can be recycled, so that equipment and construction costs of a rotation process are lowered.

The disclosure provides a wind energy system with one or more floating modules having at least two vertical wind turbines mounted thereon. A multipoint mooring system couples the floating module to a seabed, the mooring system having at least two mooring points with at least two lines positioned at location s around the floating module with the wind turbines. A rotation system is coupled to the floating module and adapted to twist the floating module relative to wind direction while the multipoint mooring system is coupled between the seabed and the floating module. The rotation system can include induced gyroscopic torque from counter-rotating wind turbines and a self-adjusting induced gyroscopic torque differential from varying wind directions. Other rotation systems can include winches and translating assemblies that can be activated to tighten or loosen mooring lines in the multipoint mooring system coupled to the floating module in a catenary manner.

The invention relates to folding window cleaning equipment, which is characterized by comprising a travelling mechanism, a folding arm rotation system, a folding lifting mechanism, a forked tail rotation system and a hoisting mechanism, wherein the travelling mechanism is placed on a track, moves along the track, and is provided with a main support, and the folding arm rotation system is installed on the main support of the travelling mechanism; the folding lifting mechanism is provided with a folding arm platform, and is supported on the folding arm rotation system through the folding arm platform; the tail end of the folding lifting mechanism is provided with a support, and the forked tail rotation system is installed on the support; and the forked tail rotation system is provided with a rotation base, and the hosting mechanism is installed on the rotation base, and is used for hoisting lift vessels for operation. The folding window cleaning equipment has an ingenious and novel structure, can work on occasions with narrow and small passages, high building walls and small spaces, and is applicable to various buildings.

A snowboard boot binding rotation system provides for detent notches that may be adjusted in rotational separation by the relative rotation of two co-rotating disks. Adjustment of the location of the lock engaging these notches and adjustment in the separation between the notches allows complete adjustment of the user's stance for snowboarding and skateboarding. A pawl mechanism allows for a hard-lock and soft-lock to be used in the snowboarding stance and skateboarding stance, respectively, for convenience of use by not requiring the boot to be removed from the binding to make the stance angle adjustments.

The invention discloses a spiral hole milling device. The spiral hole milling device comprises an rotationsystem, a revolution system, a feeding system and an eccentricity adjusting system. An electric main shaft in the rotation system drives a milling cutter to rotate through a spring collet arranged on an output shaft of the electric main shaft. A revolution motor in the revolution system drives an inner sleeve to perform revolution relative to the axis of an outer sleeve through a small synchronous pulley, a synchronous belt and a large synchronous pulley. A feeding motor in the feeding system drives a feeding lead screw to enable a feeding nut to move so as to achieve feeding. An eccentricity adjusting mechanism in the eccentricity adjusting system controls motion of a shifting sliding block, a fixed anti-backlash nut and a movable anti-backlash nut remove the backlash of the eccentricity adjusting system, and therefore high-precision adjustment of the eccentricity can be achieved. A holding mechanism arranged on the inner sleeve achieves the aim that the shifting sliding block is held on the inner sleeve after the eccentricity adjustment is completed. The spiral hole milling device can be applied to integral, high-quality and high-efficiency hole forming of difficultly-machined materials in the aerospace field.

The invention provides a magnetoelectric Coriolis force detection sensor. The magnetoelectric Coriolis force detection sensor comprises a shell, a mass body disposed in the shell and a detection sensor mechanism disposed in the shell. The shell is adopted as a rotation system with an angular velocity shown as (omega vector). The mass body m moves relative to the shell at a velocity (velocity vector). The detection sensor mechanism is used for achieving angle detection. The magnetoelectric Coriolis force detection sensor achieves detection of low or high broadband rotating speed of a translational rotator (the shell) according to the Coriolis Effect. As Fc vector = - 2m[(omega vector)*(velocity vector)], when the m is established, the value of the Coriolis force is determined by the movement velocity (velocity vector) of a mass point (the mass body) and the angular velocity (omega vector) of the rotation system (the shell). Accordingly, when the (omega vector) is low (the translational rotator slowly rotates) or when the (omega vector) is high (the translational rotator rotates fast), optimized corresponding frequency spectrum relationship between the (omega vector) and the (velocity vector) can be obtained by correspondingly increasing or decreasing the movement velocity (velocity vector) of the mass point and the stable Coriolis force can be obtained, thus achieving detection of low-speed or high-speed rotation of the translational rotator.

A vegetable rotation system "Seven harvestings within two years" for nourishing soil by itself features that the broad bean, spring corn, summer corn, automn corn, pea, corn and green cauliflower are planted in turn. Its advantages are high effect on increasing the fertility of soil and low cost.