98 results about "Gravity line" patented technology

A submarine with duck-type layout features that its floatage is close to and slightly greater than its gravitation to make the central point of floatage action is above its gravitational center, and 4 linked elevating rudders are arranged at both sides of submarine to make their total vertical action line coincides with the gravitation line of submarine. A method for controlling its navigation depth features used of a closed-loop negative feedback control system to control the deflection angle of 4 elevating rudders. A method for suspending it at a given position in seawater features use of at least two closed-loop negative feedback control systems for the distance and depth control to regulate the direction and speed of propeller and the deflection angle of elevating rudders. It is more suitable for robot submarine or toy.

The invention discloses a method and a mobile terminal for reducing noise by double microphones (MICs), and relates to a communication technology. When the mobile terminal is in a call state, if contact events do not occur at a setting point in a touch area, and/or the angle between the long edge of the mobile terminal and a gravity line exceeds a set angle range, the incorrect holding gesture of a user can be determined, and a good double-MIC noise reduction effect can be achieved by regulating call audio parameters of the MICs of the mobile terminal.

The invention discloses a steam turbine rotor lifting tool which comprises a beam. A pair of lower hanging brackets are hung on the beam and symmetrically arranged corresponding to the gravity line ofthe beam; the lower hanging bracket is provided with a lower catenary wire used for hanging a steam turbine rotor; the part of the gravity line of the beam on the upper surface of the bream is provided with a hanger used for being hooked by the hook of a traveling crane; the lower hanging bracket is movably connected with the beam; and the span between the two hanging brackets can be freely adjusted. The steam turbine rotor lifting tool is applicable to lifting the rotors matched with various models ranging from small steam turbine of water-feeding pumps of a plurality of thousands of kilowatt to high-power steam turbines of one million kilowatts. The steam turbine rotor lifting tool can be used for improving the production efficiency by not repeatedly replacing the rotor lifting tools during the process of producing and manufacturing the steam turbines, thus saving the costs of labor force and resources for processing and manufacturing the steam turbine rotors. The steam turbine rotor is an important technical progress and has very high practical value.

Provided are a printed circuit board configured to achieve reduction in impedance of a differential transmission line extending in a stacking direction, and an optical module. The printed circuit board includes a stacking-direction differential transmission line extending in the stacking direction, including: a differential signal via pair including a first signal via and a second signal via; and a plurality of conductor plate pairs each including a first conductor plate expanding outward from the first signal via, and a second conductor plate expanding outward from the second signal via. With respect to a perpendicular bisector of a center-of-gravity line segment connecting centers of gravity of the first and second signal vias, in each of the plurality of conductor plate pairs, centers of gravity of contours of the first and second conductor plates are located on inner sides of the centers of gravity.

The invention relates to cable detecting equipment. The cable detecting equipment comprises a rotary bracket, a clamp for clamping a first end of a cable to be detected, a guide mechanism for positioning and guiding the cable to be detected on the rotary bracket, a load device for drawing and tensioning the cable to be detected, and a driving mechanism for driving the rotary bracket to rotate around a rotation center. The load device is arranged on the rotary bracket and is relatively fixed with the rotary bracket in the horizontal direction; and the gravity line center of the load device is overlapped with the rotation center of the rotary bracket. According to the cable detecting equipment provided by the invention, the gravity center line of the load device is designed to be overlapped with the rotation center, so that the phenomenon of switching the load device in a detecting process can be avoided on the root. Therefore, the limitations of a rotation angle and a speed can be removed, and the accurate detection result can be ensured.

Methods and apparatus for adjusting a push point of an actuator such that the push point more closely corresponds to a center-of-gravity of a stage being driven by the actuator are disclosed. According to one aspect of the present invention, a method for scanning a stage device which includes a stage, as well as an actuator which has a first coil and a second coil, includes driving the stage using the actuator and determining when driving the stage using the actuator includes driving the stage through a first location associated with the stage. The actuator is arranged to drive the stage through a push point associated with the first coil and the second coil. The method also includes altering the push point when it is determined that driving the stage using the actuator does not result in the stage being driven through the first location associated with the stage.

This invention relates to movable magnetic suspension device, which comprises rack part, floater below the rack box with permanent magnetism, wherein the said magnetism is located on the gravity line of the said floater; the said rack box contains electromagnetism to balance floater dropping gravity interacting with the said permanent magnetism and displacement sensor to measure the floater position and magnetism suspension control circuit. The movable device is located with rotation generation device to make the floater rotate cooperating with the rotation magnetism to realize the floater self-rotation.

The invention discloses a method for automatically adjusting an application interface. The method comprises the steps of detecting and recording a current angle between the application interface and a gravity line in a real-time mode, calculating a difference value between the current angle and an initial angle, and automatically adjusting the application interface according to the difference value. Compared with the prior art, the method for automatically adjusting the application interface comprises the steps of firstly detecting and recording the current angle between the current-moment application interface and the gravity line in the real-time mode, then calculating the difference value between the current angle and the initial angle and automatically adjusting the application interface according to the difference value. When a user takes a bus, a mobile terminal swings back and forth, and the angle between a user sight line and the application interface changes (namely the application interface tilts), the method is adopted to automatically adjust the application interface, and therefore the included angle formed between the user sight line and the application interface is corrected. Therefore, the comfortable degree of the user when the user checks the application interface is ensured, and the user experience is improved. The invention further discloses the mobile terminal for automatically adjusting the application interface.

The invention discloses a novel multi-functional knee joint treatment unit with a correctable gravity line. The novel multi-functional knee joint treatment unit comprises a knee joint corrector, a massage treatment apparatus and an insulation knee pad capable of fully wrapping the knee joint. The knee joint corrector comprises rigid fixing plates and soft elastic fixing straps, and each of the upper and lower fixing plates is connected through a chuck capable of adjusting angles of the same. The massage treatment apparatus is fixed on the fixing plate of the knee joint corrector, and the insulation knee pad is fixed in a position of the chucks of the knee joint corrector. The novel multi-functional knee joint treatment unit with the corrective gravity line comprises three main components of the knee joint corrector, the massage treatment apparatus and the insulation knee pad which are properly arranged, an integral structure is reasonable, and functions do not mutually interfere; and integrating functions of correction, treatment and health care of the knee joint into one, and the novel multi-functional knee joint treatment unit can provide simple, convenient, experimental and effective diagnosis and treatment services for patients and athletes with knee osteoarthritis, and other people with knee injuries and proneness to injuries.

The invention discloses a dual-floating-body four-stand-column semi-semi-submersible fan foundation which comprises two long-strip-shaped floating bodies. Four stand columns are vertically arranged onthe floating bodies in two rows, one ends of at least four braced chain lines are correspondingly connected to the four stand columns, the other ends of the braced chain lines are connected to a seabed respectively, the four stand columns are connected with a platform separately, the platform is of a cylindrical structure and is arranged at the top end, a buoyancy tank and a ballast tank are symmetrically arranged below the platform, heaving plates are arranged among the buoyancy tank, the ballast tank and the platform in parallel at intervals, circular installing through holes are formed inthe heaving plates, the stand columns support the ballast tank, the platform and the buoyancy tank through the heaving plates respectively, one ends of tension lines are connected with the bottom ballast tank, and the other ends extend in the direction parallel to a gravity line to be connected to a seabed. The structural stability of the foundation is improved, and the foundation is simple and practical, and is not likely to be damaged.

The invention relates to an automatic rectifying device in a strip steel rolling device, which comprises support bases and a connection beam, wherein the support bases and the connection beam are fixed through screws. The automatic rectifying device comprises a fixing shaft, a roller support and an automatic rectifying roller. The lower portion of the fixing shaft is fixed at a middle position between two support bases on the connection beam, two ends of the automatic rectifying roller are respectively arranged at two ends of the roller support, and the middle of the bottom of the roller support is hinged with the upper end of the fixing shaft. Through the technical scheme, when strip steel is deviated, the gravity line of the of the strip steel deviates from the central line of the automatic rectifying roller, the automatic rectifying roller is deflected under compression of gravity, and the automatic rectifying roller just generates centripetal rectifying force along the deflecting direction. The automatic rectifying device requires no power driving, saves energy, and is simple in method, small in occupied space, simple in installation, convenient to overhaul and capable of being installed on a hanging frame track, and the existing rectifying devices have no installation space on the hanging frame track due to requirements for space structure and technology process distribution.

The invention discloses a product positioning method and device, and the method comprises the steps: obtaining a first image which comprises a binary image of a product; Determining the center-of-gravity coordinate of the binary image of the product, and determining the vertical center-of-gravity line of the binary image of the product according to the center-of-gravity coordinate; Determining a baseband region taking the vertical gravity center line as a symmetry axis on the first image, the height of the baseband region being equal to the height of the first image, and the width of the baseband region being a preset width; Determining four intersection points of an area where the binary image of the product is located and the baseband area; Determining two pairs of rays opposite in direction according to the intersection point, traversing image data of pixel points on the rays, and finding out a first pixel point inconsistent with the image data of the ray starting point on each ray;And positioning four vertexes of a quadrilateral main body in the binarized image of the product according to the pixel points, and outputting positioning information.

The invention discloses a pneumatic anchor rod hammer drill, which is mainly characterized in that a power output shaft of a speed change gear box of the prior rotary impact combination hammer drill is connected with a lengthened shaft on which a transmission gear is arranged, and the transmission gear is meshed with a fiber tail sleeve gear; a rotating part and a shell of the hammer drill are corporately fixed on a drill body seat to form a hammer drill whole; a support axis of an air leg is arranged on a gravity line of the weight of the hammer drill whole; and an air inlet pipe of an air motor is directly connected to a valve of an operating arm. The pneumatic anchor rod hammer drill realizes downward shift of the weight of the rotating part, avoids the top-heavy phenomenon, improves the integral stability, avoids direct impact, reduces strong shock during working, and is convenient for a worker to operate.

A drop test device for testing any deviation between the gravity line of an object and a defined vertical orientation includes a dropping machine and a drop panel installed on the dropping machine. The drop panel includes a support board, a plurality of restriction boards fixed on the support board, a plurality of rollers mounted on the support board and a sliding board positioned on the plurality of rollers for supporting the object. The sliding board is positioned between the plurality of restriction boards and slides on the plurality of rollers. If the gravity line of the object is not on the same line as a supportive strength line of the object, the sliding board moves on the support board and triggers the plurality of restriction boards.

A vehicle engine cooling fan is disclosed. The invention comprises a tray, a wheel hub and a reinforced rib, and blades. The impeller comprises a tray, a wheel hub, and blades. the blades are airfoil shaped cross section blades, the blades and the wheel hub are formed an integral body, the chord length ratio of the inner and the outer diameters of each blade is between 1:1.1 to 1:1.5, the included angle of each cross section gravity line and the radial straight line of the blades is between 5 degrees to 25 degrees, the projection distance on the rotating axle of each cross section gravity line of the blades is controlled between 2% to 8% of the impeller diameter, the projection distance presents a space twisted shape, and the arc transition is adopted at the connection of the blade and the wheel hub. The reinforced rib is a honeycomb-shaped reinforced rib, and the honeycomb-shaped reinforced rib is of a regular hexagon hexagonal shape. The blades and the diversion ring are connected together. The efficiency is high, the noise is small, the slip flow can not easily occur at the tail part, and the service life is long.

The invention relates to a tilting device for an ingot casting with a rectangular section, and belongs to metallurgical machinery. The tilting device is used for turning over and positioning ingots with weight reaching tons to tens of tons. A synchronous gear and a synchronous chain are adopted for adjustment, so that the centers of gravity lines of the ingots are coincident with the tilting center line so as to reach the aim of simplicity in adjustment, tilting and positioning.

The invention belongs to an automatic centering technology and particularly discloses a build-up force standard machine capable of automatically centering. The build-up force standard machine comprises an upper bedplate and a lower bedplate; a piston, an oil cylinder and a standard sensor are arranged on the upper bedplate; an upper pulling plate and a moving beam are arranged between the upper bedplate and the lower bedplate; the upper pulling plate is connected to the upper ends of two parallel screw rods by screw threads; the moving beam is connected to the middle parts of the screw rods by screw threads; and the lower ends of the screw rods are provided with compression working tables. By the structure design of the compression working tables, a correction sensor is placed on the compression working tables, so that automatic centering of a measured sensor is completed, a gravity line of the measured sensor is enabled to be coincided with the center of the standard sensor and an error generated when the build-up force standard machine is utilized to measure the measured sensor is reduced. Performance of the build-up force standard machine is further improved.

An object of the present invention is to reduce the adverse effect of interference between stationary blades and moving blades on the performance of an axial-flow turbine and to provide a high-performance turbine stage. Each of the stationary blades has a trailing edge convex toward a face side with respect to a radial line radially extending from the axis of the rotor shaft, and the each of the moving blades has a blade center-of-gravity line convex toward the face side with respect to a radial line radially extending from the axis of the rotor shaft, and shapes of the stationary blades and the moving blades meet conditions expressed by:

1<θ_nr/θ_nt

1<θ_bt/θ_br

where, θ_nt and θ_nr are angles between the stationary blade tip and the stationary blade root, and radial lines, and θ_bt and θ_br are angles between the blade center-of-gravity line of the moving blade at the tip of the same, and the blade center-of-gravity line of the moving blade at the tip of the moving blade, and radial lines.

The invention relates to a swing angle controller of an electric cradle. The swing angle controller comprises a microprogrammed control unit (MCU), a swing angle detection unit, a swing angle regulating switch and an electric motor, wherein the current swing angle of the cradle is obtained by the swing angle detection unit, an expected swing angle of the cradle is obtained by the swing angle regulating switch, a thrust regulating signal is sent to the electric motor according to the difference between the current swing angle of the cradle and the expected swing angle of the cradle, the electric motor is controlled to automatically regulate the thrust, and a voltage conversion unit is arranged in the controller. According to the swing angle controller of the electric cradle, the control accuracy of the swing angle is high; when the swing angle of the cradle is changed, the thrust can be automatically regulated, and the swing angle of the cradle is the same for babies with different weights; and when the cradle is arranged on the slant ground, the swing angle of the cradle is not affected, and is always relative to the angle of the gravity line, and the cradle can swing automatically without external force for starting.

The invention provides a torsion calibration device which comprises a torsion calibration disk, a shaft locking mechanism, a gravity line and a balance weight, wherein the torsion calibration disk comprises two semicircular disk structural parts; end parts of the two semicircular disk structural parts are firmly connected; the shaft locking mechanism comprises a locking position; the locking position is located at a circle center of the torsion calibration disk; and the shaft locking mechanism is firmly connected to the torsion calibration disk by a connecting part and can move synchronously with the torsion calibration disk; and one end of the gravity line is firmly connected to an external arc face of the torsion calibration disk and is kept tangent to the external arc face, and the other end of the gravity line is firmly connected to the balance weight. The torsion calibration device provided by the invention has the advantages of simple structure, low cost, convenient installation and debugging and simple operation. Meanwhile, a target component does not need to be dismounted for testing and online testing can be carried out directly under usual conditions. In addition, the torsion calibration device provided by the invention has pure mechanical structure, a long service life and stable performance.

A power generation system for the production of electric power or the accomplishment of other work objectives utilizes kinetic energy derived from the action of the force of gravity on a vehicle that is allowed to move along a power generation path having a downward grade. A tether cable connects the vehicle to a tether member that moves along a downhill line in response to the movement of the vehicle along the path, and the movement of the tether member operates a gearing mechanism that operates a machine to accomplish the work objective.

The invention discloses an overturning conveying device. An upper conveying line and a lower conveying line with different heights are arranged. An overturning plate is fixedly mounted outside the output end of the upper conveying line and above the lower conveying line. The tail end in the transverse direction of the overturning plate only extends to the side of the gravity line of the conveyed object and does not exceed the gravity line. The conveyed object rotates around the part supported by the overturning plate under action of gravity after falling onto the overturning plate. The conveyed object rotates at 180 degrees and falls onto the lower conveying line below, and then is continuously conveyed along the lower conveying line. The overturning conveying device is simple in structurebut can effectively overturn the object, so that the production time of conveying equipment is effectively shortened. Working is quick, and production efficiency can be improved.