270results about How to "Displacement stability" patented technology

The invention concerns a mobile cleaning device suitable for displacing along and cleaning a series of adjacent tilted solar panels aligned in a row and requiring therefor no superstructure fixed to the row of solar panels. The device includes a supporting frame defining a cleaning plane, on which are mounted a cleaning device suitable for cleaning a surface parallel to the cleaning plane, a support device for maintaining the supporting frame substantially parallel to the surface to be cleaned during the displacement of the cleaning device along a row of solar panels; and a guiding device for guiding the displacement of the cleaning device along a row of solar panels. The guiding device includes at least two, preferably at least three, separate guiding wheels, which are aligned along a straight line parallel to the cleaning plane and adjacent to a first edge of the frame. Each guiding wheel is mounted such as to rotate about an axis substantially normal to the cleaning plane and suitable for resting and rolling on the upper edge of the aligned solar panels with the cleaning device in cleaning contact with the surface to be cleaned.

A synchronous guide of a drawer element mounted on a body of a piece of furniture or household appliance via pullout guides. The synchronous guide includes two stationary toothed racks located opposite each other, each toothed rack associated with a side member of the body. Further included are two gear wheels, each of which is mounted on one of the pullout guides, the gear wheels being connected via a coupling rod. The gear wheels are mounted in a stationary manner on running rails of the pullout guides. A piece of furniture or household appliance includes a drawer element mounted on a body of the piece of furniture or household appliance via pullout guide and includes a synchronous guide as described above.

A projection display includes an imager for displaying sub-images in a two-dimensional distribution of sub-areas of the imager and a projection optics array with a two-dimensional distribution of projection optics. The projection optics array is configured to superimpose projections of the sub-images to an overall image in an image plane such that a mutual area overlap of the projections of the sub-images in the image plane in pairs results, which is between 0.1 and 0.8 for all pairs. Here, the projection display is implemented such that the overall image is a virtual overall image.

An acceleration sensor includes a base substrate provided with a first recess part, and a sensor part located on the first recess part and swingably supported in a depth direction of the first recess part by a support part, wherein the sensor part is sectioned into a first part and a second part by the support part, includes a movable electrode part in the first part and the second part, a through hole is provided at least at an end side in the second part larger in mass than the first part, and the base substrate includes a fixed electrode part in a position opposed to the movable electrode part in the first recessed part, and a second recess part deeper than the first recess part is provided in a position opposed to the end side of the sensor part.

The invention relates to a multileaf collimator having a plurality of leaves mounted displaceably in an adjusting direction for establishing a contour of a beam path. Each displaceably mounted leaf is assigned at least one linear drive having at least one piezoelectric actuator for displacing the leaf in the adjusting direction. Because the piezoelectric actuator can be driven precisely, an improved radiation therapy can be achieved, particularly in the case of a radiation therapy device having a multileaf collimator of said kind, owing to precise establishing of the contour.

A driving device, small in size and light in weight, is to stabilize the position of a surface-deforming element while reducing the effect of gravity thus enabling stable transfer and positioning. The driving device is structured to hold a movable member integrated with a piezoelectric vibrator and a lens by a shaft provided at a tip of a spring extended from an inner surface to center of a passageway. The shaft extends through an opening formed in a protrusion of the movable member. By a tensile force of the spring, the movable member at its outer periphery is pulled radially and held. When applying a voltage with a waveform changing sharply to the piezoelectric vibrator, the movable member flexes maximally upward or downward to have a reduced diameter and an increasing acceleration thereby making a movement. Then, when a frictional force increases, the protrusion is held at a point where the movable member moves. Because of being held by a tensile force, the effect of gravity decreases and hence the movable member is stabilized in position relative to a direction of transfer.

An electromagnetic suspension system comprises a universal joint mechanism for permitting radial movement of a cylinder relative to a center yoke while preventing axial movement of the cylinder relative to the center yoke. Since the cylinder is capable of radial movement relative to the center yoke, if a lateral force acts on the cylinder, the lateral force acting on a hydraulic damper does not have any significant effect on the center yoke 17, with respect to radial movement or rocking movement thereof. Therefore, excessive sliding friction does not occur in a center-yoke dry metal and a piston-rod dry metal, thereby ensuring smooth axial relative displacement between the center yoke and an outer yoke.

The invention relates to a testing device and method for simulating flat carbonate rock reaction. The device mainly comprises a liquid storage pot, a flow meter, an acid-resistant plunger pump, a pipeline electric heating jacket, a flat clamper, a plunger metering pump, a hydraulic oil tank, a condensation tube, an acid-resistant filter, a back-pressure valve, a liquid collection pot, a pressure gauge, a molecular vacuum pump, a data acquisition and control board, and a computer. The method comprises the following steps: (1) arranging the flat rock in the inner cavity of the flat clamper, and simulating the crack width by a shim; (2) starting the plunger metering pump, applying the sealing pressure, and taking out the shim; (3) starting the molecular vacuum pump, and zero setting the pressure gauge; (4) opening the liquid storage pot accommodating acid liquor; (5) starting the computer, inputting testing parameters, and injecting the acid liquor; and (6) calculating the reaction rate of the carbonate rock at any time. The method not only can be used for accurately calculating the reaction rate of the carbonate rock, but also can analyze and evaluate major factors affecting the reaction rate of the carbonate rock; therefore, the invention provides the specific equipment and the testing method for the research on the reaction of the flat carbonate rock.

Disclosed is a structure which does not lead to increased height, which prevents a steering column (6a) from falling even if during second impact the steering column (6a) is displaced in the forward direction, and which, notwithstanding, ensures the function which allows smooth displacement of the steering column (6a) in the forward direction during second impact. The disclosed steering column support device is provided with a non-falling side bracket (45) fixed to the vehicle body, and a pair of bolts (47), a pair of support capsules (16a), and a falling side bracket (46) supported by the steering column (6a). During second impact, the supporting force of the support capsules (16a) against the non-falling side bracket (45) is lost, and the steering column (6a) is displaced in the forward direction along with the bolts (47) and support capsules (16a) and the falling side bracket (46), but the steering column (6a) does not fall off the non-falling side bracket (45).

The invention discloses a slicing device capable of adjusting the thickness. Spring sets are arranged among a plurality of cutter bases. The cutter bases located at the two ends are connected with a thickness adjusting device through pull ropes. The cutter bases are fixedly provided with blades through connecting screws, and the cutter bases are further connected with a reciprocating lifting driving device. Material base plates are arranged at the positions opposite to the blades. In the thickness adjusting device, lead screws are borne on bearing bases fixedly arranged on an adjusting base, nuts are in threaded connection with the lead screws, and the nuts are fixedly connected with the pull ropes. The lead screws are provided with adjusting heads or motors used for driving the lead screws to rotate. According to the slicing device capable of adjusting the thickness, the distance among the blades can be conveniently adjusted by arranging the thickness adjusting device, and therefore the thickness of cut materials can be adjusted.

A rotary shaft supported by a housing so as to be capable of rotating in a forward rotation direction and a reverse rotation direction. A shape-memory alloy member having a wire-like shape urges, by thermally contracting, the rotary shaft by applying an external force in the forward rotation direction. A bias spring urges the rotary shaft by applying an external force in the reverse rotation direction. A wiper is displaced along with rotation of the rotary shaft. The shape-memory alloy member is arranged such that, when a thermal contraction force is divided into a first partial thermal contraction force in the forward rotation direction and a second partial thermal contraction force in a length direction of the rotary shaft, the first partial thermal contraction force is larger than the second partial thermal contraction force.

Upon self-alignment of a steering wheel, a steering wheel body has its ring plane displaced toward the vertical plane by plastic deformation of the steering wheel core. There is located a switch operation portion in at least one of the two front spokes neighboring a front space inside the ring portion and generally symmetrically arranged relative to the boss portion. The cores of the front spokes are further provided at positions generally symmetric relative to the boss portion and to the boss portion relative to the switch operation portion with deformable portions, respectively, to be twist-deformable upon self-alignment.

The invention relates to a multileaf collimator having a plurality of leaves mounted displaceably in an adjusting direction for establishing a contour of a beam path. Each displaceably mounted leaf is assigned at least one linear drive having at least one piezoelectric actuator for displacing the leaf in the adjusting direction. Because the piezoelectric actuator can be driven precisely, an improved radiation therapy can be achieved, particularly in the case of a radiation therapy device having a multileaf collimator of said kind, owing to precise establishing of the contour.

A guide bush includes a plurality of bush elements combined to form a cylindrical shape as a whole. The plurality of bush elements includes a cylindrical fitting portion. The cylindrical fitting portion is fitted in a fit-and-hold portion of a housing, and has an inner peripheral surface configured to guide an outer peripheral surface of a displacement shaft that has been inserted in the cylindrical fitting portion in an axially displaceable manner. The diameter of the circumscribed circle of the plurality of bush elements in a state in which the end faces of the plurality of bush elements with respect to a circumferential direction abut each other is not greater than the inside diameter of the fit-and-hold portion.

The invention provides a drainage device for a coal bed gas well electric submersible centrifugal pump, which is applied to the technical field of coal bed gas mining. The device is characterized in that a pressure sensor and a well head flow governor are fixed on an outlet line of liquid; the lower end of an oil pipe is connected with the outlet end of the electric submersible centrifugal pump; and the inlet end of the electric submersible centrifugal pump is connected with a motor of a drainage pump and a gas-liquid separator. The invention has the effects that (1) drainage function with large pump lift and low delivery capacity can be realized through intelligent control; (2) the gas-liquid separator can prevent soot from entering the electric submersible centrifugal pump, and can effectively realize that the coal bed gas is separated from water, thereby ensuring efficiency and stability of centrifugal pump operation; (3) an underground liquid level indicator can monitor height of an underground liquid surface in real time, thereby monitoring the effect of coal bed gas technology realization on one hand, and ensuring safe and stable operation at a high speed of the electric submersible centrifugal pump on the other hand; (4) under comprehensive effects of a controller, the flow governor, the underground liquid level indicator and the electric submersible centrifugal pump, technology of 'fixed-flow drainage' and 'fixed-liquid level drainage' needed in the process of coal bed gas exploitation can be realized.

An optical deflector includes a supporting member, a first movable element having a light deflecting element, at least one second movable element, at least one first torsion spring configured to support the first and second movable elements, for torsional oscillation about an oscillation axis, at least one second torsion spring configured to support the second movable element and the supporting member, for torsional oscillation about the oscillation axis, and a driving system configured to apply a driving force to at least one of the first and second movable elements, wherein a moment of inertia of the second movable element with respect to the oscillation axis is larger than a moment of inertia of the first movable element with respect to the oscillation axis, and wherein a length of the second movable element in a direction perpendicular to the oscillation axis is equal to or less than a length of the first movable element in a direction perpendicular to the oscillation axis.

In a method of operating a fluid-working machine, the volume of working fluid displaced during each cycle of working chamber volume is selected taking into account the availability of other working chambers. The status of each working chamber is monitored and a working chamber treated as unavailable if it is found to be malfunctioning. A working chamber may be treated as unavailable if it is allocated to an alternative working function. A fault may be detected in a working chamber by determining whether a measured output parameter of the fluid working machine fulfils at least one acceptable function criterion taking into account the previously selected net displacement of working fluid by a working chamber during a cycle of working chamber volume to carry out the working function.

A piezoelectric vibration gyro sensor includes: a) a piezoelectric vibration gyro element including: a central supporting portion having a plurality of electrode terminals provided thereon; a detection arm extending from two opposing sides of the central supporting portion and on a symmetry axis that passes through a center of the central supporting portion; a pair of connection arms extending from other opposing sides of the central supporting portion and in a direction orthogonal to the detection arm; and a pair of drive arms each extending from a tip of one of the pair of connection arms orthogonally to the respective connection arm and to both sides so that the pair of drive arms are symmetrically arranged with respect to the symmetry axis, wherein the central supporting portion, the detection arm, the pair of connection arms, and the pair of drive arms lie in a common plane; and b) a supporting substrate having a plurality of electrode leads one end of each of which is connected to a corresponding one of the plurality of electrode terminals to support the piezoelectric vibration gyro element, wherein the plurality of electrode terminals are disposed on a virtual circle whose center is a center of gravity of the piezoelectric vibration gyro element so as to be symmetrical with respect to the center of gravity, and wherein the plurality of electrode leads are each extended on an extension line that passes from the center of gravity through a central point of a corresponding one of the plurality of electrode terminals.

A compact position sensor with high operational reliability is provided. This sensor has a tubular detection coil, a magnetic core movable in the detection coil, a drive circuit for the detection coil, a signal processing circuit for converting a change in impedance of the detection coil into an electric signal, and a guide means for guiding a movement of the magnetic core in the detection coil. The guide means has a guide portion connected to the magnetic core and a support portion for slidably supporting the guide portion. The magnetic core can be smoothly displaced in the detection coil without contacting an inner surface of the detection coil by a sliding movement of the guide portion relative to the support portion.

The invention provides a method for increasing the oil recovery rate through a self-generation carbon dioxide system after polymer flooding. The method for increasing the oil recovery rate through the self-generation carbon dioxide system after polymer flooding comprises the step that the self-generation carbon dioxide system and spacer fluid are injected into an oil well after polymer flooding. The self-generation carbon dioxide system and the spacer fluid are alternately injected into the oil well multiple times. According to the method for increasing the oil recovery rate through the self-generation carbon dioxide system after polymer flooding, various yield increasing principles are combined, and various technical problems are effectively solved; (1) decompression and injection augmenting effects are achieved, specifically, alkaline blockage relieving and acid blockage relieving of zones near a water injection well are achieved by injecting chemical solutions into the water well, and thus the decompression and injection augmenting effects are achieved; and (2) a heat releasing effect is achieved, so that the viscosity of crude oil is decreased, and the oil displacement efficiency is improved.

The present invention provides an air spring which improves buffer performance in air discharging through effectively performing elasticity of a stopper component. The air spring (1) is provided with the following components: an outer cylinder (11), a lower panel (12), a diagram (13), a rubber lower board (15), a built-in stopper component (16), and a stopper component metal part (17). A second opposing surface (12a) of the lower panel (12), which opposes the outer cylinder (11), is provided with a guiding part (12b). The guiding part (12b) is projected in the main load direction and opposes the stopper component metal part (17) in a direction that is vertical to the main load direction. At least one surface in a stopper component outer surface (17a) of the stopper component metal part (17), which opposes the guiding part (12b), and a guiding part inner surface (12c) of the guiding part (12b), which opposes the stopper component metal part (17), has reduced dynamic friction coefficient.

A driving device, small in size and light in weight, is to stabilize the position of a surface-deforming element while reducing the effect of gravity thus enabling stable transfer and positioning. The driving device is structured to hold a movable member integrated with a piezoelectric vibrator and a lens by a shaft provided at a tip of a spring extended from an inner surface to center of a passageway. The shaft extends through an opening formed in a protrusion of the movable member. By a tensile force of the spring, the movable member at its outer periphery is pulled radially and held. When applying a voltage with a waveform changing sharply to the piezoelectric vibrator, the movable member flexes maximally upward or downward to have a reduced diameter and an increasing acceleration thereby making a movement. Then, when a frictional force increases, the protrusion is held at a point where the movable member moves. Because of being held by a tensile force, the effect of gravity decreases and hence the movable member is stabilized in position relative to a direction of transfer.

A piezoelectric actuator includes: a piezoelectric layer formed by a film formation method so as to have orientation in a prescribed orientation direction; and a pair of electrodes, disposed on a same surface which is substantially perpendicular to the orientation direction of the piezoelectric layer, for applying to the piezoelectric layer an electric field in a direction substantially perpendicular to the orientation direction.

A camera module having a macro switching function which can be switched between a normal photographing and a macro photographing is provided. The camera module includes a housing; a lens unit having at least one leans; a lens holder which houses the lens unit therein and is displaceable between a first position and a second position along an optical axis direction of the lens unit; a first magnetic member provided on the holder at the side of the first position; a second magnetic member provided on the holder at the side of the second position; a coil wound around the holder and provided in a close vicinity of the first magnetic member; a yoke which constitutes a part of or an entire of the housing, the yoke having a first portion provided at a position that faces the first magnetic member and a second portion provided at a position that faces the second magnetic member; a magnet provided on the yoke in a state that a space is left between the coil and the magnet; and an image pick-up device provided below the lens unit.

The invention provides a stepless speed regulator driven by a friction wheel. The stepless speed regulator driven by the friction wheel comprises a shell, an input shaft and an output shaft. The output shaft is connected with a second driving wheel. Three or more first driven wheels matched with a first driving wheel are symmetrically arranged on the outer side of the first driving wheel. Three or more second driven wheels matched with a second driving wheel are symmetrically arranged on the outer side of the second driving wheel. The number of the first driven wheels is equal to that of the second driven wheels, and the first driven wheels correspond to the second driven wheels in a one-to-one mode. Sliding shafts are connected to the first driven wheels or the second driven wheels and sleeved with conical wheels. The conical wheels correspond to each other in a one-to-one mode, and the two corresponding conical wheels are axially parallel and are opposite in installation direction. A ball lead screw mechanism is arranged inside the shell. A lead screw, the input shaft and the output shaft are located on the same straight line. A driven friction wheel on the basis of the friction wheel driving is arranged on a ball. According to the stepless speed regulator driven by the friction wheel, the drive ratio of the stepless speed regulator can be accurately controlled, abrasion to parts is small, and the driven friction wheel can smoothly displace on the surfaces of the conical wheels during running, so that the speed changing process is smoother, and a vehicle will not slow down or stop or change speed suddenly.

The invention provides a socket, which comprises a pressure plate, two protective doors and a plug bush, wherein the two protective doors are arranged at the upper part of the pressure plate; the plug bush is arranged at the lower part of the pressure plate; when a plug is inserted, the protective doors move to open, so that the plug is inserted into the plug bush at the lower part of the pressure plate; a mounting and fixing structure is arranged between the two protective doors; a limiting structure is arranged on the pressure plate; limiting parts corresponding to the limiting structure are arranged on the two protective doors; the two protective doors are arranged into the pressure plate through the mounting and fixing structure when mounted; and the limiting structure on the pressure plate corresponds to the limiting parts of the two protective door to limit the two protective doors. The mounting and fixing structure is arranged between the two protective doors; the two protective doors are arranged together; and the limiting structure is arranged on the pressure plate for limiting and fixing the limiting parts of the two protective doors, so that the fixed structure of the protective doors in the pressure plate is stable and reliable; the protective doors do not easily turn over to fall off when automatically assembled; and the automatic degree is high.

A camera module includes a lens unit which constitutes an optical system of the camera module; a holder which houses the lens unit and is displaceable along an optical axis direction of the lens unit; a coil provided on the holder; a yoke and magnets provided on the yoke for providing a magnetic field to the coil; a flexible printed circuit board to which the lead wires are connected for supplying an electrical current to the lead wires, the flexible printed circuit board having an insulating sheet portion and a pattern portion; a leaf spring for supporting the holder so that the holder is displaceable along an optical axis direction of the lens unit; a base for supporting the holder when no electrical current is supplied to the coil; and an imaging element provided below the lens unit. In the camera module the leaf spring biases the holder toward the base when no electrical current is supplied to the coil, the holder has a lower cylindrical end portion which is supported by the base, and the base has a support member which supports the lower cylindrical end portion of the holder and a protruding height adjusting mechanism which is capable of adjusting a protruding height thereof from the base.