69results about How to "Avoid grounding" patented technology

Processing technique using plasma to process the surface of a sample such as semiconductor device. The phases of RF bias voltages applied to a substrate electrode and an antenna electrode opposed thereto are controlled to be opposite to each other so that either one of the electrodes is forced to always function as ground. Therefore, the current flowing to cross the magnetic field for controlling the plasma is decreased, and the potential distribution difference in the surface of the sample to be processed is reduced, so that the charging damage can be suppressed. Energy of ions incident to the sample to be processed can be controlled to perform high-precision etching. The plasma potential can also be controlled so that the strength of the ion impact to the inner wall of the chamber can be reduced, thereby reducing particles detached from the inner wall of the processing apparatus to improve the throughput.

A method of evaluating railway ties for deterioration is mounted on a moving vehicle along the rails where the presence of the tie is detected and an impact energy source is used to create at least one wave in a surface of the tie which travels longitudinally along the tie. At positions spaced longitudinally from the source, the time of arrival of the wave is detected typically by a series of sensors responsive to air pressure changes to determine a speed of propagation of the wave in the tie and, in the event that the speed in said tie is below a predetermined speed, an output indication is provided regarding the deterioration of the tie, which can include a real time marking of the tie detected.

An internal cavity structure of the push bar kiln used for preparing VN alloy is composed of internal cavity, cover plate, side wall and tracks. A push bar kiln is longitudinally and sequentially composed of the low-temp segment with 5 temp regions, the transition segment with 4 temp regions, the high-temp segment with 7 temp regions, and the cooling segment consisting of natural cooling region and forced cooling region. It features that different but proper refractories are chosen for different temp regions. Its internal cavity has 3 separated channels. The central channel is the kiln cavity and two side channels are isolated heating element ones.

A golf club adjustable for use by right handed or left handed golfers is provided comprising a club head defining a club head cavity and a ball striking face. The golf club further includes a shaft and a club head connecting mechanism disposed within or proximate the club head cavity and connectable to the club head and to the shaft, the club head mechanism being adjustable to facilitate translation of the vertical orientation of the shaft relative to the club head, in a plane parallel to a striking surface, while the shaft remains connected to the club head, and angle of the striking surface with respect to the ground remains unchanged.

A power cable assembly for use in a water and air-cooled welding assemblies for carrying power from a welding machine to a welding torch and either cooling water from the torch to a circulator reservoir or, in the case of air-cooled torches, shielding gas to the torch. The cable assembly includes a flexible outer conduit disposed about a flexible electrical conductor formed of a plurality of twisted, braided or bunched wires encased in a thin layer of flexible plastic material. A plurality of projections extend radially from the flexible encasement so as to space the electrical conductor from the interior conduit wall, thereby defining a water or gas-flow path extending entirely about the conductor to enhance the efficiency of heat removal from the conductor.

The invention relates to a multi-purpose 10 kV drainage wire insulation fixer and a work method with the multi-purpose 10 kV drainage wire insulation fixer. The multi-purpose 10 kV drainage wire insulation fixer comprises a forceps holder, an insulation outer cylinder, a forceps clamp transmission mechanism, a fixing and locking mechanism and an insulation crank. The insulation material of the body of the multi-purpose 10 kV drainage wire insulation fixer is formed by compositely pressurizing epoxy resin and alkali-free glass fibers in an integral surrounding mode. The forceps clamp is in a stretched state under the normal state. The multi-purpose 10 kV drainage wire insulation fixer and the work method with the multi-purpose 10 kV drainage wire insulation fixer are characterized in that an insulation rod work method and an insulation glove work method are adopted in the multi-purpose 10 kV drainage wire insulation fixer, and an operator can climb a pole or take an insulation bucket arm vehicle to conduct 10 kV overhead line electrified lead breaking and connecting work. The multi-purpose 10 kV drainage wire insulation fixer and the work method with the multi-purpose 10 kV drainage wire insulation fixer have the advantages that the insulation performance is high, and strength is large. The forceps clamp can stably control wires of different types, the operator can firmly control drainage wires to prevent grounding or short circuit faults caused by swinging of the drainage wires and ensure work safety, the safety in the electrified lead breaking and connecting process is greatly improved, the application range is wide, and the distinct practicability characteristic is achieved.

The invention provides an electric connecting device and a display device. The electric connecting device comprises a flexible circuit board, a connector and a pressure board, wherein the flexible circuit board comprises a main body, a plurality of first conducting terminals and stiffening plates; the connector comprises an insulating frame, a sliding slot structure and a plurality of second conducting terminals, and the sliding slot structure is provided with an opening. When the flexible circuit board is electrically connected with the connector, the first conducting terminals are respectively in contact with the second conducting terminals correspondingly, and the pressure board enters the sliding slot structure from the opening and slides along the sliding slot structure to press the flexible circuit board and the connector tightly. The electric connecting device and the display device can solve the problems that conducting terminals on the flexible circuit board are easy to form an electrostatic discharge loop and the connection between the flexible circuit board and the connector are easy to loose, and poor display of a display device, caused by poor contact, is prevented.

An acoustic wave filter device which attains improved balancing between transmission characteristics of first and second balanced terminals includes first and second 3-IDT longitudinally coupled resonator type acoustic wave filter elements that are connected to an unbalanced terminal in parallel, and one terminal of a first IDT and one terminal of a fourth IDT are connected to each other and further connected to the unbalanced terminal, second and third IDTs are connected to each other and further connected to a first balanced terminal, fifth and sixth IDTs are connected to each other and further connected to a second balanced terminal, and a first ground line which electrically connects the second IDT which is nearer to a first ground terminal than the third IDT to the second ground terminal is longer than a second ground line which electrically connects the fifth IDT which is nearer to the first ground terminal than the sixth IDT to the first ground terminal.

There is disclosed a vacuum switchgear, which comprises a vacuum container (10) to be earthed; a plurality of switches (58,60,62) disposed in the vacuum container. Each of the switches is so constituted that a movable electrode (176,194) supported by a movable electrode rod (168,170) and a fixed electrode (178,196) supported by a fixed electrode rod (180,198) are opposed to each other. One or more bus conductors (68,72) are connected to the movable electrode rod or the fixed electrode rod of each of the switches. Each of the switches comprises cylindrical insulating electrode shields (184,186) which are disposed around a conductive shield (182) surrounding the movable electrode and the fixed electrode. The insulating shield prevents scattering and adhere of metal vapor generated from the movable electrode and the fixed electrode.

The embodiment of the invention discloses a filter based on a half-wavelength resonator with a strip line structure and an antenna, and belongs to the technical field of communication. The filter comprises a half-wavelength resonator and a multiple layers of surface-mounted PCB dielectric plates, wherein the half-wavelength resonator is positioned on the PCB dielectric plate of the middle layer; the central position of the half-wavelength resonator is virtually grounded, and the half-wavelength resonator adopts alternating arrangement of hairpin line structures and comb line structures. In theembodiment of the invention, the filter is realized by adopting the low-loss tangent PCB dielectric plates, so that the development cost is reduced. The central position of the half-wavelength resonator in the filter is virtually grounded, so that the resonator is prevented from being grounded, and the problem of difficulty in accurately controlling the size of grounding in circuit processing issolved. The half-wavelength resonator in the filter adopt the hairpin line structures and the comb line structures, the miniaturized filter is realized by adopting the resonator with the strip line structure, and the hairpin line structures and the comb line structures are alternately arranged to realize half-wavelength coupling.

The invention relates to a natural environment simulator capable of producing fog by ultrasonic wave, belonging to the technical field of high-voltage line insulator performance testing equipment. The natural environment simulator comprises an artificial fog chamber; a wall feed-through sleeve is arranged at one side of the artificial fog chamber in a matching way; the bottom of the artificial fog chamber is provided with an assembling box in a matching way; the assembling box is internally provided with a fog generator and a fan in a matching way; the fog generator and the fan are connected with an external power line; the external power line is used for supplying power; a hook is arranged on the top of the artificial fog chamber in a matching way, and is used for fixing an insulator to be tested; and the fog generator is an ultrasonic fog generator. As the ultrasonic fog generator and the fan are used together, the fog inlet quantity of the artificial fog chamber can be effectively controlled, and the natural environment needed by a laboratory can be simulated; furthermore, the external screw-type wall feed-through sleeve is arranged at one side of the artificial fog chamber in a matching way, so that the creepage distance can be prolonged, the current is prevented from being in ground connection along a barrel wall, and the personal safety of workers can be improved; and the natural environment simulator is simple in structure, small in size, strong in operability, good in simulation fidelity and easy to move, and can be popularized, applied and implemented.

The invention discloses a shielding cover for a disconnection switch. The shielding cover comprises two shielding plates, a transmission mechanism, a control mechanism and an insulating hollow pipe; the transmission mechanism comprises an insulating pull rod, a fixed plate and two push-pull plates; the insulating pull rod is arranged in the insulating hollow pipe; a protruding part is arranged at one end of the insulating pull rod while the other end of the insulating pull rod is connected with the control mechanism that is used for controlling insulating pull rod to move in an axial direction of the insulating hollow pipe; the fixed plate is fixed on the insulating hollow pipe, and a first slide way is formed in the fixed plate; the first slide way extends along the axial direction of the insulating hollow pipe; the protruding part is positioned in the first slide way and capable of sliding along the first slide way; and one ends of the two push-pull plates are both hinged with the protruding part while the other ends of the two push-pull plates are hinged with the two shielding plates respectively to enable the two shielding plates to move close or far away from each other so as to clamp or loosen a stand column insulator of the disconnection switch. When the shielding cover for the disconnection switch is used for removing bird nests, effective shielding is applied to the disconnection switch in ground potential so as to ensure a safe distance in live working.

The invention relates to a high-voltage charged display locking device which comprises an electric filed energy acquisition module and a display control module, wherein the display control module comprises a display control unit and a wireless communication receiving unit; the electric field energy acquisition module comprises an electric field energy acquisition unit, a microcontroller and a wireless communication transmitting unit; the output end of the electric filed energy acquisition unit is connected with the power supply end of the microcontroller; the signal output end of the microcontroller is connected with the input end of the wireless communication transmitting unit; the electric field energy acquisition unit comprises an electric field energy acquisition wire, a rectifying circuit, a filter circuit, an energy storing circuit and a voltage-stabilizing circuit which are electrically connected in sequence; and one of two ends of the electric field energy acquisition wire, serving as the two input ends of the rectifying circuit, is suspended, and the other end of the electric field energy acquisition wire is connected to the surface of high-voltage equipment. The locking device has the advantages of safety in use, reliability in detection, capability of realizing normal work of the electric field energy acquisition module without a special power supply and high using value.

The invention discloses a bird's-nest device for a transformer substation. The bird's-nest device for the transformer substation comprises a clamp type mechanical arm, a rake type mechanical arm and a net bag supporting device. According to the bird's-nest device for the transformer substation, various bird's nests on electrical equipment in the transformer substation can be electrically detached, so that the drop of the reliability of power supply and the loss of electric quantity caused by power failure of the equipment can be avoided, the bird's nests at hidden parts of the equipment can be flexibly and effectively detached and cleaned, and weeds of the bird's nests can be ensured to prevent from drooping or dropping during the detaching and cleaning operations of the bird's nests, so that accidents of grounding, short circuit or trip of operating equipment of a power grid due to the weeds and bird damages can be avoided, the potential safety hazard endangering the operation of the power grid can be eliminated, and the extra-high voltage power grid can be ensured for safe and reliable operation.

An AC / DC cylindrical magnetron with a drive system that absorbs large variations in the rotation of the target tube, an efficient high capacity electrical transfer system, and improved electrical isolation.

A seatbelt retractor for retracting a seatbelt includes a spool for retracting the seatbelt, a locking mechanism having a locking member rotating together with the spool in a normal state and prevented from rotating in a direction of withdrawal of the seatbelt so as to cause a relative rotation with respect to the spool in case of emergency, and an energy absorbing pin provided to the spool and the locking member for limiting a load applied on the seatbelt at a time of the relative rotation between the spool and the locking member. The energy absorbing pin includes a lubricating coating layer formed thereon.

The invention relates to a cable ladder formed by two beams (1a) and a number of crossbars (2A), all formed by extruded profiles made of a polymeric material. The beams (1) have a channel (4a) that receives a corresponding end of the crossbars. The channel (4a) has a lower wing (5a) and an upper wing (6a). A recess (7a, 8a) of the lower wing (5a) or upper wing (6a) has a number of openings (9a) along the longitudinal direction of the beam (1). The ends of the crossbars (2A) pass through the opening (9a) of the recess (8a) and have a reduction (10A) into which a corresponding part of the channel (4a) clips. The lower wing (5a) of the beams (1a) is folded over itself via a folding line (19a), such that a final section of the lower wing (5a) undergoes a lowering by means of elastic bending when the end of the crossbar (2A) is introduced.

The invention discloses a pressing block and a roof photovoltaic system comprising the same. The pressing block comprises a pressing plate and two side plates arranged on two opposite sides of the pressing plate; the two side plates are abutted against the same surface of the pressing plate, and a clamping groove is formed by the pressing plate and the two side plates in a surrounding mode; the outer side wall on one side, far away from the clamping groove, of the side plate is provided with a pressing piece used for pressing a photovoltaic module; the outer side wall on one side, far away from the clamping groove, of the side plate is provided with a clamping part used for clamping the photovoltaic module; the pressing piece is arranged close to the bottom of the clamping groove; and theclamping part is arranged close to the opening of the clamping groove. According to the pressing block, the upper surface of the photovoltaic module does not need to be perforated and damaged, so thata water leakage phenomenon is avoided, and the phenomenon that the photovoltaic module breaks down due to rainwater entering caused by the perforation is avoided; and the construction cost and the later maintenance cost are lowered, firmness and reliability are achieved, and the wind resistance is excellent.

The invention provides an electric vehicle capable of preventing the short circuit or grounding of a rotation motor even a side cover of the electric vehicle is damaged due to a side frame or one portion of the side frame is intruded into a shell due to the damage of the side cover. In a vehicle (10A) as the electric vehicle, a cover component (34) is arranged between a motor (12) and a side cover (18b) in a motor shell (18). Observing from the rotating shaft direction (X1, X2), the cover component (34) covers a coil end (52) and a portion of a motor rotor (14). In the condition, a first shortest distance (d1) between the motor rotor (14) and the cover component (34) along the rotating shaft direction (X1, X2) is set shorter than a second shortest distance (d2) between the coil end (52) and the cover component (34) along the rotating shaft direction (X1, X2) (d1<d2).

The present invention relates to a vehicle dynamometer system for dynamometer testing of a vehicle (100), comprising at least one dynamometer test unit (110, 111) having a power source (201), the power source (201) comprising an output shaft (202) arranged for, in use, rotation with a vehicle wheel shaft (105, 106), the system further comprising an adapter plate, said adapter plate comprising means for allowing fixed connection to a wheel hub (203) of a wheel shaft (105, 106) being tested, said adapter plate further comprising means for allowing fixed connection of the adapter plate to the output shaft (202) of said dynamometer test unit (110, 111) to thereby connect the output shaft (202) of the dynamometer test unit (110, 111) to said wheel shaft (105, 106). The adapter plate (204) is designed such that, when fixedly connected to said wheel hub (203) but disconnected from said dynamometer test unit (110, 111), said adapter plate (204) is arranged to support the vehicle (100) to allowrelocation of said vehicle (100) while supported by said adapter plate (204).

The invention provides a junction box comprising a box body and a rainproof portion. The rainproof portion is disposed on the top end of the box body. The rainproof portion extends from the rear side of the box body to the front side of the box body, and protrudes from the front side. The junction box of the invention comprises the rainproof portion, and the rainproof portion is disposed on the top end of the box body and extends out of the box body, so as to shield rainwater and prevent rainwater from dropping on the box body directly. Thus, water seepage and leakage of the box body are effectively prevented, and further, terminal grounding or short-circuiting caused by water flowing into the box body is prevented, and safe and stable operation of devices in a transformer station is ensured.

The invention relates to a shielding plate, a terminal module using the shielding plate and a female end connector, the shielding plate comprises a main body part, the front end of the main body part is provided with a convex hull, the convex hull is arranged on one side, facing a corresponding grounding terminal, of the main body part in a protruding mode, and the convex hull is used for being matched with a grounding elastic piece at the front end of the corresponding grounding terminal to clamp a grounding pin; the main body part is provided with a window or a kerf, and the convex hull is formed at the window or the kerf through integral stamping. Compared with the mode that a complete shielding plate is directly punched to form a full-surrounding convex hull, during machining, the window or the kerf is formed in the main body part firstly, then the convex hull is formed through integral punching, the convex hull is a half convex hull, the machining difficulty is low, and the needed punching force is small.