38results about How to "Prevent vibration," patented technology

Disclosed herein is a drying machine. The drying machine comprises supporting members mounted on a base, and motor fixing brackets each including an insert part, through which a motor is inserted, and first and second supporting legs extending downwardly from the opposite ends of the insert part, the first and second supporting legs being engaged with the supporting members, whereby any vibration of the motor is prevented and attachment / detachment of the motor is easy and convenient.

An engine mount structure is provided with active vibration mechanisms which are attached in the vicinity of the engine mount to prevent engine vibrations from propagating into the engine mounting structure, for example, the wing or fuselage structure of an aircraft. Additionally, sensors are provided on the engine and / or wing / fuselage structure to provide control signals to the active vibration mechanisms so that the active vibration mechanism react to the sensed data to minimize the vibration transmissibility from the engine into the wing / fuselage.

In a rolling ball type two-stage low speed changer device 1, empirical formulas are obtained as a relationship between number of first, second, third and fourth lobes z1, z2, z3, z4 of a hypo based groove 6 (8) and an epi-based groove 7 (9). The relationship is represented by z1>z2, z3>z4, z1−z2=2, z3−z4=2 and z3=n×z2×½ (n: integer), and enables to a precise and smooth rotational transmission without inviting differential slippage and incurring an irregular rotation and uneven torque transmission on an output shaft 16 within the practical usage, and reducing a thickness dimension to render a whole structure compact, achieving a high transmission efficiency without inviting a backlash, and attaining a high torque transmission with low noise.

A modular railing system with handicap access is disclosed based on commercially available tubing assembled into a railing through use of fittings that connect to each other and the rails and posts of the railing system to allow all possible standard rail configurations. All connections are thereby held together by mechanical, rather than welded, connections.

In a state that a wafer stage is not positioned in the center of the Y-direction traveling range, thrusts Fa, Fb supplied from a pair of linear motors to a Y-direction stage are made different and the Y-direction stage is moved in the X direction so that moments Ma, Mb about the centroid of the Y-direction stage by the thrusts Fa, Fb cancel each other. Since the moments Ma, Mb about the centroid generated by the thrusts cancel each other and the thrusts do not act as forces for rotating the Y-direction stage, the Y-direction stage is not deflected in a yawing direction. Such a stage device as constructed above can prevent deflection in a yawing direction due to displacement of the centroid position of an object to be positioned or a stage and precisely move the object to be positioned to a target position.

An electric motor having a rotation shaft includes a motor housing into which the electric motor is accommodated, at least one pair of rolling bearings positioned in the motor housing and rotatably supporting both ends of the rotation shaft, and a displacement restriction member provided inside the motor housing and restricting a displacement of the rolling bearing in an axial direction of the rolling bearing. Each rolling bearing includes an inner race, an outer race, and rolling elements rotatably supported between the inner race and the outer race. The inner race is press fitted without any gaps onto an outer peripheral surface of the rotation shaft, and the outer race is press fitted without any gaps into a bearing attachment portion provided inside the motor housing.

An image forming apparatus having a print head that reciprocates along a guide rail includes a carriage on which the print head is mounted. The print head is supplied with ink through a tube from an ink cartridge that is arranged outside the carriage. The carriage includes an engaging portion that slidably engages the carriage with the guide rail, an urging portion that presses the guide rail against the engaging portion, and a base portion on which the urging portion is mounted. The urging portion includes an elastic member that is in contact with the base portion at one end thereof, and a wedge-shaped member that is connected to the other end of the elastic member and urged in a direction in which the guide rail is pressed against the engaging portion by the elastic force of the elastic member.

A color wheel includes a carrier element, a filter group, and a connection component. The carrier element includes a first carrier, and a second carrier. The carrier element rotates around the central axial line. The first carrier has at least one aperture. The filter group has a transparent zone and a filter bonding zone. The filter group and the carrier element share the central axial line. The filter bonding zone has at least one concave zone. The combining component is simultaneously in the apertures of the first carrier and the filter bonding zone to fix the filter bonding zone of the filter group between the first carrier and the second carrier.

A method for preventing vibration of a rudder of an aircraft may have, on a lateral aerodynamic surface of the aircraft's rudder, a protruding aerodynamic element capable of generating an aerodynamic effect tending to rotate the rudder about its articulation axis. An actuator of the rudder is controlled such that it counters the action of the protruding aerodynamic element and such that it imposes on the rudder a position of equilibrium in aerodynamic extension of the fixed vertical stabilizer.

A multi-faceted multi-task system for horticultural adaptations including water dispersion and irrigation, animal and plant / crop protection, and plant shading, which allows a user to operate an irrigation system or a radial misting apparatus while using a tarp for shade and construct a fence to create an animal control zone. The present device features a telescoping main pole that can be adjusted to different heights to fit any situation. The device is highly portable as it can be folded up onto itself and carried to a destination by hand and provides water dispersion for irrigation and temperature control, while offering users the opportunity to construct a shade and / or animal control zone. A ball containment system for athletic activities.

Disclosed herein are a washing machine which minimizes the number of dampers and effectively prevents vibration, and an outer tub supporting structure thereof. The washing machine includes a housing forming an external appearance of the washing machine, an outer tub provided in the housing to store water, an inner tub rotatably mounted within the outer tub, a driving device including a rotary shaft passing through the outer tub and connected to the inner tub to rotate the inner tub, a bearing surrounding the rotary shaft and fixed to the outer tub to prevent rotation of the outer tub during rotation of the rotary shaft, a bearing housing formed on the outer tub such that the bearing is mounted within the bearing housing, and a damping unit provided with a first end supporting the bearing housing and a second end fixed to the washing machine housing to reduce vibration of the outer tub.

A linear motor having a fixed inductor and a moving part including windings and a stator. The stator includes a plurality of teeth defining a plurality of slots into which the windings are inserted, the stator being segmented into a first piece and a second piece adjacent to the first piece. Ajoint is defined between the first piece and the second piece. A fastening fastens the first piece to the second piece, wherein the fastening includes a recess disposed in a first lateral surface of the first piece located at the joint, wherein the recess opens exclusively onto the lateral surface and defines at least one locking surface. A complementary part formed from the second piece and which engages the at least one locking surface so as to hold the first lateral surface and a second lateral surface of the second piece against one another.

In order to provide a vibration motor surface mounting structure capable of preventing a vibration motor from tipping over without using a part such as metal holder requiring complicated assembly, for a vibration motor having an eccentric weight mounted on the rotating shaft of the motor and mounted on a surface of a printed circuit board, a support member having extensions extending to the side of the rotating shaft on which the eccentric weight is mounted is used, a portion of this is fixed to the motor or the frame thereof, and a bottom surface including the extensions of the support member is secured to the mounting surface of the printed circuit board by soldering.

The invention relates to a ventilating fan. The ventilating fan comprises a frame and a hodmadod which is provided with a motor with fan blades; a wind outlet of the hodmadod is provided with an on-off curtain which is fixed on the wind outlet of the hodmadod by a shaft; the outer side of the shaft is provided with an iron block for making the on-off curtain in a closed state; the outer side of the hodmadod is provided with an electromagnet; when the ventilating fan operates, the electromagnet attracts the iron block and keeps an open state of the on-off curtain; the ventilating fan can effectively prevent the on-off curtain from vibrating, thereby not influencing the performances of input air, noise and static pressure, etc. of the machine.

In a method of machining a blank from all directions using at least one machine tool, such as a milling machine, production of the ready-to-use, measured component which is controlled and classified with regard to quality, such as a turbine blade, occurs in as few steps and setups as possible with the use of machine tools and milling machines that as far as possible are of identical design. The blank, in a first machining step, is held by at least one first adapter and a first region is given its final partial shape corresponding to the intended use by a machine tool or milling machine. In a second machining step, the partly machined blank is held by at least one second adapter in the first, finally machined region, and the remaining region is given its final overall shape corresponding to the intended use by a machine tool or milling machine.

A vane ring assembly, and a compressor and gas turbine including the vane ring assembly, can prevent vibration of vanes and inhibit wear of the vane due to vibration by firmly and tightly fixing the vanes in contact with a ring. The vane ring assembly includes a retaining ring having inner and outer sides extending in a circumferential direction; a plurality of vanes respectively disposed around the inner side of the retaining ring and configured to be fastened to the retaining ring; and a plurality of fixing parts configured to be fastened to a surface of each vane, by passing through the retaining ring to fix the vanes to the inner side of the retaining ring.

The invention discloses a multifunctional locking nut. The multifunctional locking nut comprises an anti-theft cylindrical part, a locking nut, an internally-arranged spring, a limiting step, a rotating sleeving part and a hexagonal locking sleeve. According to the multifunctional lock nut, an internally-arranged spring sleeving ring is added to the nut, thus the situation that the nut is loosened due to the fact that a bolt and the nut are subjected to machine vibration for a long time can be effectively prevented, and furthermore, the locking effect of the nut is enhanced. A rotating sleeving part device is added to the locking nut, thus the internally-arranged spring can be loosened and tightened more conveniently, and furthermore, the locking nut is more convenient to use. By means of the structural manner that the hexagonal locking sleeve is matched with a cylinder with an internal thread, after the nut is locked, the hexagonal locking sleeve is taken down, thus the locking nut cannot be taken down with a common spanner, and furthermore, the locking nut has the anti-theft function.

A method of balancing a crankshaft includes connecting a torsion-absorbing pendulum to a cheek of the crankshaft, which is coupled to a crankpin. As the pendulum connected to the cheek has insufficient mass to balance the crankshaft, a lightening bore is formed through a bisection plane of the cheek. In forming the lightening bore, enough material is removed from the cheek so that the mass of the pendulum becomes sufficient to balance the crankshaft.

A card edge connector can allow an insertion card with a locating groove on one side to be inserted thereto, the card edge connector including: a base housing, and an elastic clamping part. Two ends of the base body have two clamping portions, one sides thereof which are opposite are concaved to form a limiting slot, respectively; the elastic clamping part is fastened within one of the clamping portions, the elastic clamping part comprising a fastening base, an elastic arm, an elastic resisting portion and a limiting portion, one end of the fastening base can be retained in the clamping portion, another end thereof being connected with the elastic arm, a partial section of the elastic arm away from the fastening base being bent to form the elastic resisting portion, which can be exposed correspondingly to the limiting slot of the clamping portion retained by the elastic clamping part, one end of the elastic arm away from the fastening base having the limiting portion, so that it can be retained in the clamping portion; thereby, the insertion card may be prevented from vibration or shaking after insertion.

A positioning control device based on an observer control has a disturbance suppression function to which a disturbance suppression function is added without affecting the control characteristics of the observer. Models of an actuator and a disturbance model are separated, and for the disturbance model, state information is generated using an estimated gain determined from a disturbance model defined by a transfer function of which denominator is a numerator of a filter in which degrees of denominator and numerator for shaping a sensitivity function are the same, and the disturbance suppression value of the actuator is computed from the state information. The vibration of the head can be prevented adapting to a wide range of disturbance frequencies without affecting the control characteristics of the observer.

The invention discloses a tubular workpiece supporting device of a vertical lathe. The tubular workpiece supporting device comprises a machining rotary disk. The machining rotary disk is provided witha plurality of T-shaped grooves in the radial direction. Clamping pressing blocks are fixedly arranged in the T-shaped grooves. The clamping pressing blocks are circumferentially arranged around a tubular workpiece. The clamping pressing blocks are used in cooperation with fixation on the bottom end of the tubular workpiece. The upper portion of the tubular workpiece is sleeved with a hoop. A plurality of T-shaped seats around the tubular workpiece are mounted in the T-shaped grooves of the machining rotary disk. Supporting rods are hinged between the T-shaped seats and the hoop. The hoop, the supporting rods and the T-shaped seats constitute a supporting device used in cooperation with the clamping pressing blocks to achieve the fixing and supporting effect on the tubular workpiece. Theworkpiece is protected against vibration in the machining process, and the machining precision is effectively improved.

A bearing system for reducing end clearance and axial vibrations includes a bearing housing and a bearing. The bearing is a thrust bearing and may be of any type, such as a flat thrust face, a taper land thrust bearing or a tilt pad thrust bearing. The bearing housing includes a cavity to hold the bearing. A fluid cavity is formed between the bearing and the bearing housing. At least one fluid passageway extends through the bearing housing to feed fluid to the fluid cavity. As fluid is introduced to the fluid cavity the pressure in the cavity moves the bearing outward, away from the bearing housing and towards the rotating thrust collar, reducing the clearance, or space, between the face of the bearing and the thrust collar, reducing or eliminating the vibrations.

The invention belongs to the technical field of concrete stirring, and particularly relates to a vertical circulating concrete stirrer. The concrete stirrer comprises a stirring barrel, a spiral bladeroller, a transverse rod, a supporting block, a conveying cylinder, a motor, a first belt wheel, a second belt wheel, a first belt and a rotary stirring mechanism. According to the concrete stirrer,the motor is controlled to rotate to drive the spiral blade roller to rotate, the rotating spiral blade roller drives concrete raw materials at the bottom of a discharging barrel body to be conveyed into a feeding barrel body along a conveying barrel, and the rising concrete raw materials are gradually mixed in the process; then the concrete raw materials are discharged from the end, close to thedischarging barrel body, of the conveying barrel to the periphery and enter a barrel-shaped stirring part, the moving rotary stirring mechanism stirs concrete in the barrel-shaped stirring part, the concrete raw materials are further mixed, and finally the concrete in the barrel-shaped stirring part enters the discharging barrel body; and the concrete raw materials in the stirring barrel are stirred in the circulation process, and then the concrete raw materials can be fully mixed.

The invention relates to a non-circular ring-like thin-walled part machining process and a thin-walled part clamping tool thereof. A non-circular ring-like thin-walled part is clamped through the thin-walled part clamping tool for side wall machining, rough machining, semi-finish machining and finish machining are conducted through an inner ring and an outer ring correspondingly, vibration cannotbe generated in the machining process, and the surface quality of a to-be-machined part is improved. The working efficiency is improved.

A foldable bed includes a plurality of connecting bars, a plurality of support bars, and a plurality of stand units. Each of the stand units includes two pivotally connected support legs each having a first end provided with an upper support portion, a second end provided with a lower support portion, and a middle section provided with a pivot portion. Each of the stand units further includes two clamping brackets each mounted on the respective support leg, and two vibration absorbers each mounted in the respective clamping bracket. Thus, when the two support legs are expanded, each of the vibration absorbers on one of the support legs abuts the pivot portion of the other one of the support legs so that the support legs are combined solidly and stably so as to enhance the structural strength of each of the stand units.

The invention discloses a valve device of an enclosed type compressor, characterized in that, a convex-shaped support protruding part is arranged on a discharge cap facing to the direction of a brakedevice, and one part of a steel plate washer is prolonged to form a support plate part, thereby flexibly supporting the part between the discharge cap and the brake device. Therefore, even the discharge cap is machined with errors or the brake device is assembled with errors, the flexible support can be also formed for the brake device, thereby preventing the vibration of the brake device and thenoise increase. The valve device of the invention is mainly applied to a refrigerator, also is widely applied to refrigeration systems such as an air conditioner and the like.

A washing machine includes a cabinet; a tub disposed in the inside of the cabinet; at least one suspension apparatus configured to reduce vibrations of the tub, and to connect the tub to the cabinet such that the tub is supported on the cabinet; and a position guide apparatus having one end connected to the at least one suspension apparatus, and the other end connected to the tub, and configured to limit a movement range in horizontal direction of the tub.

A retention system protects the round stored inside a rotating continuous belt-type magazine, and holds the round securely while allowing it to be readily and easily released prior to firing. The retention system permits all the retaining devices to be easily retracted so that a ramming mechanism of the weapon can push the round into the chamber without interference. The gun tube of the automated weapon houses the round and provides interfaces for all other components to attach. The tube length minimizes the axial movement of the round. The round is held within the tube by a front door assembly and a rear door assembly. The door assembly is made of a crescent-shaped door attached to a pivot shaft, in order to minimize the amount of rotational travel required to open the door for loading or firing the round.

The invention discloses a component assembly for reinforcing a double-cone rhombic grid reinforcement framework structural part. The component assembly comprises a main supporting plate which is connected with a supporting panel through a plurality of supporting vertical plates; a medium block is detachably connected to the supporting panel; a base for supporting the double-cone rhombic grid reinforcement framework structural part is detachably connected to the medium block; a plurality of grid reinforcement clamping mechanisms are arranged on the supporting panel, each comprising a fixing plate which is detachably mounted on the supporting panel; a clamping vertical plate is arranged on each fixing plate, and a propping bolt is in threaded connection with each clamping vertical plate. The component assembly can be used for clamping and positioning the double-cone rhombic grid reinforcement framework structure; the supporting panel is in contact with the inner surface of the double-cone rhombic grid reinforcement framework structure, so that the rigidness of the grid reinforcement can be improved, a component can be avoided vibrating and greatly prevented from deforming during mechanical processing; the quantity of feeding is increased during mechanical processing, thus the material removal rate can be raised, and the processing efficiency can be greatly raised.