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54 results about "Contact depth" patented technology

System and method for simulation test of contact state of isolating switch contact in GIS

The invention discloses a system and a method for a simulation test of a contact state of an isolating switch contact in GIS (Geographic Information System). The system comprises a shell, wherein an upper insulating cover plate and a lower insulating cover plate are respectively arranged at upper and lower ends of the shell; a static contact penetrates through the upper insulating cover plate; the static contact and the upper insulating cover plate are statically sealed; a movable contact detachably penetrates through the lower insulating cover plate; the moveable contact and the lower insulating cover plate are movably sealed; the static contact is provided with a groove into which the moveable contact can be inserted. The system provided by the invention can be used for simulating the contact states under the condition of different contact depths, contact materials and contact pressure; voltage and current are applied to the moveable contact and static contact in a test; the contact resistance and the contact temperature under different contact states can be measured practically; the system provided by the invention can be used for researching the relation and change rule of the contact resistance, contact temperature and contact state of the isolating switch contact in GIS and can establish a basis for the detection for the contact state of the isolating switch contact in GIS.
Owner:JIANGSU ELECTRIC POWER RES INST +3

Electrolytic milling-grinding machining tool cathode with efficiency and precision and electrolytic milling-grinding method

InactiveCN108406018AReduced contact depthFully contactedHigh current densityContact depth
The invention relates to an electrolytic milling-grinding machining tool cathode with efficiency and precision and an electrolytic milling-grinding method, and belongs to the field of electrolytic milling-grinding composite machining. According to the electrolytic milling-grinding machining tool cathode and the electrolytic milling-grinding method, a plurality of arc-shaped grooves at equal intervals are formed in the lower end of the side wall of the tool cathode, the side walls of the grooves are insulated, and diamond abrasive particles are inlaid in the wall surfaces of the portions, except for the grooves, of the side wall of a cathode base body through a resin binder, so that electrochemical anodic dissolution only exists in the surfaces of the portions, opposite to the grooves, of aworkpiece, at the moment, the depths of the grooves become a part of a machining gap, accordingly the contact depth between the diamond abrasive particles in the portions, except for the grooves, ofthe side wall of the cathode base body and the machining surface of the workpiece is increased, then the grinding effect of the diamond abrasive particles on the workpiece in the electrolytic milling-grinding process is enhanced, and the precision and the surface quality of the electrolytic milling-grinding machining can be improved; and moreover, compared with the electrolytic milling-grinding finish machining under the low current density in the past, the tool cathode can adopt higher current density, and the machining efficiency can be improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Multifunctional water surface algae removing machine

The invention relates to a multi-function water surface algae cleaning machine, comprising double float formed by bracket connection, no-blocking pump set on the bracket, driving device, cyanobacteria collector connected in inner sides of double float and pitch adjusting device for cyanobacteria collector, which are connected and combined. The merit is that driving wheels are set at outer sides of double float; under the driving of motor they can rotate in clockwise and counterclockwise directions or adjust rotation speed of two driving wheels to realize advancing, retreating and turning of algae cleaning machine. Pitch adjustable device is set. The algae cleaning machine moves forwards or backwards for air cleaning work so that as much as possible cyanobacteria is absorbed by the no-blocking pump. Comb-shape division device and miscellany removal device are used to prevent algae absorption pump blocking. The whole algae cleaning machine can operate on bank or on algae storage ship after the algae cleaning machine so that the load of float work of algae cleaning machine, the contacting depth between absorption mouth of pump and algae layer is guaranteed; and two bad conditions of suction and water absorption can be avoided. The invention is provided with reasonable structure distribution, simple operation and good algae cleaning performance.
Owner:SHANGHAI OCEAN UNIV

Method for calculating fracture toughness through indentation method

The invention belongs to the technical field of fracture toughness test and provides a method for calculating fracture toughness through an indentation method. The method comprises the following steps: 1) obtaining relationship between depth and load during material pressing-in and unloading stages; 2) obtaining plastic residual depth and contact depth state parameters according to a load-displacement curve during material unloading; 3) predicting a radial displacement correction factor and a Berkovich pressing head non-axisymmetric correction factor of the material under the function of a pressing head by utilizing finite element software; 4) carrying out material uniaxial tension experiment to obtain material elasticity modulus, and obtaining critical hole rate of the material based on the GTN theory with the help of the finite element software; and 5) associating indentation work with fracture energy and carrying out equivalence with strain energy density to obtain a fracture toughness equation characterized by the critical plastic residual depth. The fracture toughness test method can quickly obtain the elastic modulus and the fracture toughness value of the material at low loss through a small-range indentation experiment of the material.
Owner:江苏嘉易安科技有限公司

Multi-point touch equipment based on depth camera

The invention discloses multi-point touch equipment based on a depth camera. The equipment comprises an image acquisition module, a contact processing module and a projection display module, wherein the image acquisition module is used for acquiring color image information and hand contact depth image information and transmitting the color image information and the hand contact depth image information to the contact processing module; the contact processing module is used for processing the received information to obtain the image information of a projection plane, and further, the contact information of fingers is obtained; contact coordinates on the projection plane are transformed into graphical interface coordinates; the contact information is converted into operating information, and the operating information is transmitted into an application program; and the projection display module is used for projecting the received information onto a specified plane. By adopting the equipment, damage cannot be caused to a human body; the operating dynamics of a user can be accurately captured; and the touch-control reducibility of an image is high. Moreover, the multi-point touch equipment based on the depth camera can be easily carried, and therefore, the interactive experience of the user during an application process is enhanced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1

Tool for measuring contact depth of contacts of switch cabinet handcart

InactiveCN105004251AReliable and precise contactGood meshing contactMechanical depth measurementsInsertion depthBarcode
The invention discloses a tool for measuring the contact depth of contacts of a switch cabinet handcart, which comprises a fixed member, a sliding member and a digital display measuring tape, wherein the fixed member is installed at the outer surface of static contact, the sliding member is installed at the outer surface of a moving contact and arranged opposite to the fixed member, and the digital display measuring tape can read automatically. The digital display measuring tape comprises a shell, a measuring tape, a barcode scanner and a display screen, wherein the shell is installed at the inner side of a panel of a switch cabinet handcart body, the measuring tape is arranged in the shell, the barcode scanner is used for carrying out reading on the measuring tape, and the display screen is connected with the barcode scanner and used for displaying the reading; and the measuring tape is provided with a barcode with the adjacent distance being zero. One end of the fixed member is fixed at the tail end of the static contact, the other end of the fixed member is flush with the front end of the static contact, one end of the sliding member is flush with the front end of a plum-blossom-shaped contact, the other end of the sliding contact is connected with an initial end of the measuring tape, the extension length of the measuring tape is at least the axial length of the plum-blossom-shaped contact, and the extension direction of the measuring tape is identical to the axial direction of the sliding member. The tool disclosed by the invention realizes accurate and reliable contact, and the travel of the measuring device can be read, so that the insertion depth of a plum-blossom-shaped contact finger can be judged accurately.
Owner:STATE GRID CORP OF CHINA +2

Method for measuring contact depth of movable and stationary contacts of breaker handcart

The invention provides a method for measuring contact depth of movable and stationary contacts of a breaker handcart. The method comprises the following steps: preparing a measuring paper board; measuring contact depth of the movable and stationary contacts, sleeving the measuring paper board on the stationary contact so that the distance from the measuring paper board to the end face of the stationary contact is 4mm to 5mm; charging the breaker handcart in a rocking manner so that the breaker handcart reaches a position connected with a valve mechanism, pushing the measuring paper board to move on the stationary contact by using a quincuncial contact so that the measuring paper board can finally reach a maximum depth contact position of the quincuncial contact and the stationary contact; discharging the breaker handcart in a rocking manner, and measuring the size from the left end face of the stationary contact to the measuring paper board by using a millimeter steel plate ruler. The method disclosed by the invention has the effects that by utilizing the normal working position of the handcart, the contact depth can be obtained by just measuring one distance size, the measurement error is + / -0.5mm and reduced, and the measurement accuracy is improved. The measurement can be implemented by operation time of one-step charging and discharging of the breaker handcart in a rocking manner; with addition of the preparation time of the measuring paper board, the total measurement time is only 2 minutes, so the measurement speed is five times the original speed.
Owner:CHUANTIE ELECTRIC TIANJIN GRP

Method for identifying anisotropic plasticity parameters of plate based on single-cone indentation

The invention discloses a method for identifying the anisotropic plasticity parameters of a plate based on single-cone indentation, used in the technical field of nondestructive testing and in-situ testing of anisotropic materials. The method comprises the following steps: establishing a numerical model for correlating the indentation response parameters and the plasticity parameters of an anisotropic material by using a dimensionless function; analyzing the material response of a single-cone indentation experiment to obtain the anisotropic plasticity parameters of a metal plate, and obtainingthe load-displacement relation curve of a test piece; testing the unloaded residual indentation morphology by a three-dimensional confocal microscopic device, and extracting the contact depth valuesof the residual indentation contour in two orthogonal directions of transverse and longitudinal lines of the tested material; and substituting the material response information extracted in the indentation experiment into the established dimensionless function model, and carrying out reverse calculation to obtain the anisotropic plastic parameters of the metal plate. The anisotropic plasticity mechanical parameters reversely calculated by the method are unique and have a high accuracy.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Rainwater monitoring device arranged on roof

The invention discloses a rainwater monitoring device arranged on roof. The rainwater monitoring device comprises a water quality detection platform, water quality detection heads, a plurality of signal receiving emitters and a support; the water quality detection platform is provided with a chamber structure inside, and a plurality of diversion grooves with tilt angles are arranged equidistantly on the outer periphery of the water quality detection platform and around the center of the same; a height adjustment mechanisms are arranged inside the diversion grooves, the water quality detection heads are mounted on the height adjustment mechanisms, and the height adjustment mechanisms can make probes of the water quality detection heads and rainwater to change in contact depth; the signal receiving emitters are equidistantly arranged on the upper end face of the water quality detection platform. The diversion grooves are arranged on the outer side of the water quality detection platform, automatic discharge of the rainwater is realized, influence of substances accumulated in the water quality detection platform in the long term is further reduced, and accuracy in detection data is improved; meanwhile, a protective sleeve is arranged on the outer side of each water quality detection head, damage of the water quality detection heads is avoided, and service life of the water quality detection heads is prolonged.
Owner:宝应县振新农业发展有限公司

Device and method for measuring contact depth of moving and static contacts of switchgear

InactiveCN106839942BEasy to installReal-time reading of contact depthMechanical depth measurementsEngineeringContact position
The invention discloses a device for measuring the contact depth of switch cabinet movable and static contacts. The device comprises a fixed ring and further comprises a locking device, a reference adjusting device and a reading device. The invention further discloses a method for measuring the contact depth of the switch cabinet movable and static contacts. The method includes the steps that firstly, the device for measuring the contact depth of the switch cabinet movable and static contacts is taken out and installed; secondly, a reading is measured, wherein the first step includes the substeps that the reference adjusting device is installed in advance, the fixed ring is installed and fixed, the reference adjusting device is detached, and the reading device is installed; the second step includes the substeps that the movable contact is pushed to a critical contact position, and the contact depth of the movable and static contacts is read. The device for measuring the contact depth of the switch cabinet movable and static contacts has the advantage of being convenient to install, and the method for measuring the contact depth of the switch cabinet movable and static contacts has the advantages that the contact depth of the movable and static contacts is read in real time and operation is quick and stable.
Owner:国网山东省电力公司乳山市供电公司

Connecting rod experimental device for simulating rotor rub-impact faults

PendingCN108414216ARealize rubbing failureMachine part testingElectricityElectric machine
The invention discloses a connecting rod experimental device for simulating rotor rub-impact faults, belongs to the technical field of rotor rub-impact experiments, and aims to solve the problems thatan existing experimental device cannot adjust contact depth of a rub-impact contact piece and rotor and cannot simulate the rub-impact faults from weakness to severity. A direct current dynamo and aconnecting rod rub-impact device are both fixed to a working platform, center lines of the direct current dynamo and connecting rod rub-impact device are in the same straight line, and a speed measuring motor is arranged on the direct current dynamo; the direct current dynamo is electrically connected with a control cabinet, the output end of the direct current dynamo is connected with one end ofa rotary shaft, and the other end of the rotary shaft successively penetrates through a first baring pedestal, a turnplate and a second bearing pedestal; the first bearing pedestal and the second bearing pedestal are fixedly arranged on the working platform, the turnplate is located inside the connecting rod rub-impact device, and a mounting gap is reserved between the turnplate and the connectingrod rub-impact device. The connecting rod experimental device for simulating rotor rub-impact faults can accurately simulate rotor rub-impact faults of different depths and local face contact.
Owner:HARBIN ELECTRIC CO LTD
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