3679 results about "Bushing" patented technology

The invention discloses a sleeve fault diagnosis method and system. The method comprises the following steps: preprocessing an acquired sleeve infrared image to filter out a non-heating part; segmenting the image of which the non-heating part is filtered out to obtain a single sleeve image; diagnosing the sleeve fault according to the segmented single sleeve image. According to the invention, theinfrared image of the transformer sleeve is preprocessed and segmented, therefore, an infrared image of a single sleeve is obtained; the temperature of each part of the sleeve can be conveniently obtained by converting the gray scale of each pixel in the gray scale map of the infrared image of the single sleeve into the corresponding temperature value, the method is simple but very ingenious, thefaulted sleeve and the faulted area can be quickly positioned, the specific fault type can be judged, and convenience and quickness are achieved.

The invention relates to the technical field of high-voltage electrical equipment, and particularly discloses a high-insulating-property thermoplastic sleeve and a method for preparing the same based on a co-extrusion process, the surface of a nonlinear layer is wrapped with an insulating material, so that the corona discharge phenomenon is avoided; and meanwhile, the same thermoplastic material is adopted as the insulating layer (including the first thermoplastic layer and the second thermoplastic layer) material and the base material of the nonlinear layer, so that no obvious interface exists between the insulating layer and the nonlinear layer, charge accumulation is avoided, insulation failure is avoided, the insulation and voltage resistance of the sleeve is improved, and the operation reliability is improved.

The invention discloses a laminated structure and a differentiated hole machining method of the laminated structure, and relates to the technical field of machining, the method comprises the steps that S1, first reaming is conducted on the laminated structure, and the laminated structure comprises two or more layers of laminated plates; s2, linings made of matched materials are selected according to the material characteristics of different plates; s3, bushings made of different materials are installed in the reamed holes of the matched plates by pulling the core rod; s4, the linings made of the different materials are extruded, so that the linings made of the different materials are in interference fit with the matched plates; and S5, secondary reaming is conducted on the laminated structure according to the assembly requirement, so that the inner diameters of the deformed bushings made of different materials are the same. According to the method, the fatigue performance of plates made of different materials is coordinated through a differential hole machining method, and the fatigue life of the laminated structure is remarkably prolonged; and it is guaranteed that hole machining of different machining amounts is conducted on the laminated structure under one-time hole forming, the continuity of the hole forming technology is guaranteed, and the hole position precision is improved.

The utility model provides a spring-free type bushing end screen, which belongs to the technical field of bushing end screens and comprises a flange seat, an insulating sealing sleeve is embedded in an inner cavity of the flange seat and is clamped in the inner cavity of the flange seat through a locking component, and a locking thread is arranged at the end part, far away from the flange seat, of a binding post along the outer wall. The inner wall of the side, away from the flange hole, of the flange base is in threaded connection with a grounding piece, the grounding piece is arranged outside the locking thread in a sleeving mode, anti-skid lines are arranged on the outer wall of the grounding piece in the circumferential direction, external threads are formed in the bottom of the outer wall of the grounding piece in the circumferential direction, internal threads are formed in the top of the inner wall of the flange base, and therefore the grounding piece is in threaded connection with the top of an inner cavity of the flange base. After the grounding piece is in threaded connection with the flange seat, the end screen is in a continuous grounding state, stable operation of the transformer is guaranteed under the condition that overall stability is guaranteed, and the protection effect is enhanced.

The invention discloses a detection assembly system and a detection assembly method for a frame bushing, the detection assembly system comprises a press fitting part, a positioning part, a first detection part, a second detection part, a third detection part and a control part, the problem of separation of detection and assembly is solved, the axial rigidity detection of the bushing can be completed in the initial stage of press fitting, and the detection efficiency is improved. Extra detection procedures are not needed, the overall production cycle is greatly shortened, and the method is suitable for the large-batch production rhythm; potential quality hazards caused by sampling detection are eliminated, and abnormal linings are prevented from flowing into subsequent links; the positioning ends of the positioning pieces can be close to or far away from each other, and by combining the supporting design of the guide inclined surfaces, the tool can be adaptive to bushing outer sleeves of different sizes, frequent tool replacement is not needed, and the equipment debugging cost is reduced; while the assembly precision of the bushing is ensured, high efficiency, no damage and full coverage of rigidity detection are realized, the production quality and efficiency of the auxiliary frame are obviously improved, the later rework cost is reduced, and the control performance of the whole vehicle and the stability of NVH (Noise Vibration and Harshness) performance are ensured.

The invention discloses a coal mine substation intelligent operation and maintenance early warning management system based on multi-source information fusion, and belongs to the technical field of coal mine substation operation and maintenance early warning. The multi-source sensing layer comprises an environment sensor arranged in a substation switch cabinet, an ultrahigh frequency partial discharge sensor array embedded in the root part of a switch cabinet insulating sleeve and the periphery of a GIS basin-type insulator, and vibration sensors mounted on a transformer shell and a circuit breaker operating mechanism mounting surface, and the environment sensor is used for detecting humidity and dust concentration; the ultrahigh-frequency partial discharge sensor array is used for capturing ns-level partial discharge pulses in real time and dynamically predicting the growth trend of the insulator surface contamination degree through the partial discharge amount, and the vibration sensor recognizes mechanical looseness through vibration spectrum features. According to the method, the pollution degree is associated with the partial discharge amount, so that early warning is changed from passive fault response to active risk pre-judgment, an accurate triggering condition and a decision basis are provided for operation and maintenance, and a changing curve of the insulator pollution degree along with the environment or the operation time is analyzed through data accumulation.

The invention relates to a safety system for automatic pressure relief during an internal arc fault period of an alternating-current transformer bushing, and the system comprises the alternating-current transformer bushing which is used for accommodating an insulating medium; the first pressure relief structure is arranged between the alternating-current transformer bushing and the vacuum container and is used for communicating the alternating-current transformer bushing with the vacuum container under the condition that the internal pressure of the alternating-current transformer bushing exceeds a preset pressure threshold value; the optical signal detection device is arranged in the alternating-current transformer bushing, is in communication connection with the control device, and is used for detecting an optical signal, converting the optical signal into an electric signal and outputting the electric signal to the control device; the control device is in communication connection with the second pressure relief structure and is used for outputting a starting instruction to the second pressure relief structure under the condition that it is determined that the arc fault occurs according to the electric signal; and the second pressure relief structure is arranged on the middle flange and is used for communicating the alternating-current transformer bushing and the external space in response to the opening instruction. By adopting the system, early fault intervention and controllable pressure release can be realized.

The application discloses a composite material structure bushing reinforcing method based on electromagnetic loading, which uses electromagnetic loading to complete the bushing reinforcement of the composite material structure, and obvious beneficial effects are obtained compared with traditional methods. The method proposes a process parameter calculation method for the reinforcement process of the structure to solve the problem that existing devices and methods cannot be applied to the bushing reinforcement of the composite material structure. The radial compressive stress around the hole is obtained through the Lame formula and the elastic stress-strain relationship of the composite material, and then the total resistance of dynamic extrusion friction in the reinforcement process is obtained through the Coulomb friction theory, and the process parameters are determined in combination with the mathematical model of the electromagnetic force. The application can realize the calculation of the reinforcement process parameters of the composite material bushing with different structures and sizes, and is used for guiding the reinforcement of the dynamic cold extrusion composite material bushing structure.

The invention relates to the technical field of power equipment on-line monitoring and fault diagnosis, and discloses a converter transformer bushing end screen voltage abnormity detection device and early warning method.The method comprises the steps that voltage data are collected through a wireless intelligent sensor, soft synchronization and self-adaptive windowing are achieved through a commutation notch feature locking mechanism, and a preprocessing signal is output; topological correlation clustering is executed to construct a virtual health reference, a dynamic residual sequence is extracted through time domain difference, and system side and equipment side features are decoupled; constructing a variational mode decomposition model, and calculating a characteristic entropy value of the intrinsic mode function; and comparing the entropy value with a threshold value, triggering an active impedance disturbance verification mechanism, controlling a sensor to access a load and comparing an actual voltage drop rate with a theoretical voltage drop rate, and determining an insulation degradation or poor contact fault. High-precision synchronization can be achieved without a hardware clock, and the problems that weak fault features are difficult to extract and virtual connection and insulation faults are difficult to distinguish in a high-impedance loop are effectively solved.

The invention relates to the field of precision machining detection, and discloses a hydraulic shaft sleeve machining detection system and detection device which comprises a pneumatic servo control module, a signal collecting and processing module and a thermal inversion calculation module. The pneumatic servo control module drives the overturning air cylinder to apply a composite pressure waveform containing a static reference and a periodic flutter component to the hydraulic sleeve; the signal acquisition and processing module performs frequency domain analysis on a displacement signal detected by the displacement sensor and separates average displacement and displacement amplitude; the thermal inversion calculation module calculates real-time dynamic stiffness according to the displacement amplitude, a material stiffness thermal softening model is used for reversely deducing a temperature rise value, thermal expansion and elastic deformation errors are stripped through multi-dimensional error decoupling operation, and real height data under the standard temperature and without external force are calculated. According to the invention, active excitation and frequency domain analysis technologies are utilized, so that the interference of an oil film and thermal deformation is effectively solved, and high-precision online detection and processing compensation of a thermal-state workpiece are realized.

The invention provides a tank-type circuit breaker AC / DC voltage withstand test electric field improvement method and device and a storage medium, and the device comprises an epoxy resin composite insulator embedded with an aluminum alloy spherical shell, and the spherical shell achieves the equipotential connection with the wire outlet end of a circuit breaker sleeve through conical surface cooperation. And the curvature radius is optimally designed to transfer an electric field peak value to an equatorial region. The spherical shell is coated with a semi-conductive silicone rubber layer with resistivity distributed in a gradient manner, and the outer insulator forms a multi-stage umbrella skirt structure. During installation, dimensional tolerance self-adaptive compensation is achieved through a cam locking mechanism of the floating flange, and the belleville spring set provides axial sealing pre-tightening force. The method comprises four core processes of composite structure coaxial installation, gradient electric field regulation and control, dynamic sealing locking and electric heating state verification. According to the scheme, an electrode structure is reconstructed to suppress point discharge, space charge accumulation is blocked through dielectric layer resistivity gradient distribution, the creepage distance along the surface is prolonged through the multi-stage umbrella skirts, and the technical defect that the safety distance is shortened by a traditional grading ring is overcome.

The invention relates to the technical field of transformer arc fault detection, in particular to an optical fiber sensing detection method, system and device for an arc fault in a transformer bushing and a storage medium. Acquiring internal pressure and flow velocity data of the casing by constructing an optical fiber sensing detection model, identifying fault feature points and determining a pressure-flow velocity relationship; establishing a pressure change prediction model in combination with the environmental parameters to perform first prediction, and analyzing pressure and flow velocity dynamic characteristics to obtain a dual-drive fault threshold to perform second prediction; and an arc fault diagnosis model is constructed based on the double-parameter coupling matrix, and a time-varying early warning model is established in combination with fault evolution to realize fault prediction. According to the invention, the technical problem that the traditional detection method cannot monitor the arc fault in the bushing in real time is solved, the accurate identification of fault features, the early warning of precursor signals and the accurate prediction of residual life are realized, the detection precision and real-time performance are obviously improved, and reliable guarantee is provided for the safe operation of the transformer.

The invention discloses a rapid connection testing device for a printed circuit assembly board, and aims to solve the problems of high cost, low connection density, large occupied space, tedious operation and the like in the existing testing technology. The device comprises a quick-connection probe module, a positioning tray and a pull pin, the quick-connection probe module comprises a quick-connection probe seat module, a protective cover module and a spring, positioning and locking are realized by multiplexing existing mounting holes of a to-be-tested PCB, electrical connection is realized by utilizing contact of a spring probe and a test point, a quick-connection positioning guide sleeve, a lock bead and a quick-connection ring are combined to form a quick locking / unlocking structure, and the quick-connection probe seat module and the protective cover module are connected with the pull pin. The conductive bushing and the grounding support ring form a grounding loop in cooperation with auxiliary positioning of the guide pin. A special test connector is omitted, so that the material cost is reduced; the connection density and the signal rate are improved, and the PCB space is saved; the operation efficiency is improved through the quick connection structure, and the device is suitable for efficient mass production testing.

The present invention belongs to the technical field of electrical devices. Disclosed is a primary-secondary integrated smart ring main unit. The smart ring main unit comprises a mechanism chamber, cable bushings, an explosion-proof valve seat, a cable chamber, an operating mechanism, a switch linkage lock, a linkage mechanism, a low-voltage cabinet, umbrella-skirt bushings, and a circuit-breaker apparatus, wherein the several cable bushings are mounted on a top plate of the cable chamber; the explosion-proof valve seat is mounted on the top plate of the cable chamber; the mechanism chamber is mounted above the cable chamber; the circuit-breaker apparatus is mounted inside the mechanism chamber; the several umbrella-skirt bushings are mounted inside the mechanism chamber; the operating mechanism is mounted inside the mechanism chamber, and is arranged at the front end of the circuit-breaker apparatus; the linkage mechanism is arranged above the operating mechanism; the low-voltage cabinet is mounted above the mechanism chamber; and the switch linkage lock is mounted on the linkage mechanism. The problem in the prior art whereby switches of a ring main unit cannot be operated separately, easily resulting in the inability to open cabinet doors or the risk of electric shock when a fault occurs, is solved. The safety factor of the ring main unit is improved, and the universality thereof is increased.

The invention discloses a modularly installed electric energy metering box, and relates to the technical field of electric energy metering boxes, the top and bottom of a main gas box are connected with a plurality of assembly gas heads, one side of the main gas box is provided with a plurality of assembly boxes, one side of each assembly box is uniformly provided with a plurality of heat dissipation holes, and two sides of the top and two sides of the bottom of each assembly box are connected with communicating sleeves; the middle of the communication sleeve is connected with a supporting pipe, one end of the supporting pipe is sleeved with an assembling nut, the assembling nut is connected with the adjacent assembling air head, and the other end of the supporting pipe is connected with an external air head. The external air head in the assembling heat dissipation assembly can be connected with the assembling nut, and double-layer installation of electrical devices can be achieved in the metering box; the assembling nut in the flexible expansion assembly can also be connected with the expansion air head, flexible installation of a small number of electrical devices is achieved, the two assemblies are installed in a modularized mode, the heat dissipation effect is guaranteed, and meanwhile the space utilization rate of the whole metering box is improved.

The utility model discloses a novel bearing for a fan blade main shaft of a wind power generator, which relates to the technical field of generator bearing equipment, and comprises a bearing seat, a bearing seat base, a bearing cover, a sectional bearing bush, an upper bushing and a lower bushing, the top end of the bearing seat is provided with a circular-truncated-cone-shaped mounting groove, and the bottom end of the bearing cover is a circular-truncated-cone-shaped surface matched with the circular-truncated-cone-shaped mounting groove. A first gap is reserved between the outer wall of the upper bushing and the top wall of the circular-truncated-cone-shaped mounting groove and a first gap is reserved between the outer wall of the lower bushing and the bottom wall of the bearing cover, and a plurality of sectional bearing bushes are movably arranged in the first gaps at equal angles. Compared with the prior art, the service life of the bearing is prolonged, stable and long-acting operation of the wind driven generator is effectively guaranteed, smaller bearing bush segments are adopted, the difficulty in manufacturing, mounting and transporting the bearing bush is reduced, and only a small number of bearing bush segments which break down need to be replaced during maintenance.

The invention discloses a through needle temperature and pressure sensor and an assembly process, and relates to the technical field of temperature and pressure sensors, and the sensor comprises a ceramic pressure core body and an NTC assembly. An NTC (Negative Temperature Coefficient) through needle for outputting a temperature signal is arranged on the ceramic pressure core body in a penetrating manner; the NTC assembly comprises an NTC chip, a lead wire sleeve, a fixing seat and a metal sheath, a lead wire of the NTC chip is sleeved in the lead wire sleeve and extends out to be arranged through the fixing seat, and the metal sheath is sleeved outside the lead wire sleeve and the NTC chip and is fixed on the fixing seat; the lead of the NTC chip is connected with the NTC through pin through electric resistance welding, so that the connection reliability is improved, and meanwhile, the soldering tin rosin is prevented from sputtering to pollute the fixed seat and the ceramic pressure core body; the structure of the temperature pressure sensor is simplified, the reliability of electric connection is improved, and a signal path is rationalized through lead wire arrangement, metal sheath protection and electric resistance welding direct connection; the problems of complex structure, circuit virtual connection and low reliability of the existing temperature and pressure sensor are effectively solved.

To provide a stand that enables both of a position in a rolling machine and a configuration for adjustment to be selected more flexibly at the same time with designing for downsizing the rolling machine.SOLUTION: A stand 1 rolls a metal rod, a wire, and a pipe along a rolling shaft. The stand includes: a stand housing 10 whose outside includes at least six side surfaces 14.1-14.6 having equal lengths which are arranged rotationally symmetrically with the rolling shaft as a center, when viewed along the rolling shaft, where the two side surfaces respectively form a pair of side surfaces arranged in parallel to each other; and three rollers 20.1-20.3 each arranged on one roller shaft, and surrounding the rolling shaft in a star shape to jointly form a caliber 21. The three rollers are loaded by an eccentric bushing, in a bearing hole of the stand housing, by a method in which an interval in a radial direction of the rollers from the rolling shaft can be adjusted.SELECTED DRAWING: Figure 1A

The invention relates to the field of power system equipment detection, in particular to a residual magnetism measuring device and method for a large power transformer. The residual magnetism measuring device for the large-scale power transformer comprises the large-scale power transformer, a high-voltage bushing, a high-voltage neutral point bushing, a low-voltage bushing, an iron core outgoing line bushing, a first capacitor, a second capacitor, a detection impedor, a partial discharge instrument and a large-current generator, the capacitance of the first capacitor is 30pf-40pf and is matched with the capacitance of a transformer iron core, and the capacitance of the second capacitor is 300pf-400pf and is 10 times proportional to the capacitance of the first capacitor; the method comprises the following steps: carrying out a long-time induction withstand voltage and partial discharge test after a conventional test, measuring discharge amounts Q1, Q2 and Q3 at 0.5, 1 and 1.5 times of rated voltages, judging residual magnetism according to the difference value of the discharge amounts and an iron core grounding current, and if the residual magnetism exceeds the standard, magnetizing and demagnetizing by using a large current generator at the frequency of 150Hz. The method has the advantages that the residual magnetism is measured and evaluated in time, equipment faults are avoided, operation is easy and convenient, and adaptability is high.

This invention discloses a sealing assembly, comprising: a bushing, a rotating shaft, a sealing seat, a sealing ring, and a deformation component; the rotating shaft is rotatably disposed within the bushing; the sealing seat is disposed on the outer periphery of the rotating shaft and adapted to rotate with the rotating shaft, and a sealing groove is formed on the outer peripheral surface of the sealing seat and / or the inner peripheral wall of the bushing; the outer periphery of the sealing ring abuts against the inner wall of the bushing, and a portion of the sealing ring is received within the sealing groove, and a notch adapted to deform the sealing ring is formed on the sealing ring, the notch being adapted for fluid to pass through the sealing ring; the deformation component is disposed on the notch, and the deformation component is adapted to expand or contract according to the increase or decrease of temperature to adjust the size of the notch. The sealing assembly of this invention can reduce leakage and improve sealing effect by reducing the notch in the sealing ring under high-speed operating conditions.

The invention relates to the field of automatic equipment for insulation board production and manufacturing, and discloses an automatic stacking device for insulation board production and manufacturing, which comprises a grabbing manipulator, a control chamber is fixedly mounted at the driving end of the grabbing manipulator, and the bottom end of the control chamber is fixedly mounted in the middle of the top end of a square channel steel bracket; adjusting rods are movably installed at the four edges of the bottom end of the square channel steel support through limiting shaft sleeves, pneumatic suction cups are fixedly installed at the tail ends of the adjusting rods, a rotating column is movably installed in the control chamber, and a driving bevel gear is fixedly installed at the top end of the rotating column; threaded rods are movably installed on the periphery of the inner side wall of the control chamber, and short shafts are fixedly installed at the inner side ends of the threaded rods. Safety is guaranteed through double adsorption, the adjustable suction cups are matched with multiple sizes, intelligent folding and stable stacking are achieved, synchronous cleaning and strong adsorption can be achieved, the efficiency is improved through the lightweight design, and the safety, adaptation and stability problems of heat preservation plate stacking are comprehensively solved.

An exhaust device for a vacuum die-casting mold includes a bushing, an ejection pin, and an exhaust pin. The bushing defines a sliding slot extending along an axial direction thereof. The ejection pin includes a head portion and an extension pin portion slidably inserted into the sliding slot. The extension pin portion cooperates with the bushing to define at least one exhaust groove extending along the axial direction in the sliding slot. The exhaust pin includes a head portion and a pin body portion. The head portion defines at least one vent groove extending along a radial direction thereof. The pin body portion defines at least one groove extending along an axial direction thereof. The head portion is pushed by molten metal and gas, and the at least one groove allows only gas to pass therethrough without allowing molten metal to pass therethrough. The passing gas is then exhausted to the outside through the at least one vent groove and the at least one exhaust groove, thereby avoiding the formation of pores on a die-cast product.

This utility model discloses an automatic circuit board testing device, including a base and a support. The support has a crossbeam and a vertical support. The crossbeam is equipped with a vertical moving mechanism that drives a detection positioning plate to move up and down. The vertical support has a guide mechanism that slides with the detection positioning plate. The detection positioning plate has several circular holes for placing detection probes or detection seats. The circular holes are arranged in a matrix and have annular grooves inside. The annular bosses on the detection probes or detection seats are interference-fitted with the annular grooves for fixation. The vertical moving mechanism can adopt a wrench drive or a bushing structure. The guide mechanism includes a guide post that fits with a through hole or a groove that fits with a boss. The device also includes a transition plate and a transition hole on the base. This device achieves automated testing through mechanical structure design, improving efficiency and accuracy, and has the advantages of strong versatility and convenient maintenance.

The invention discloses a die-casting die thermal fatigue life detection device, and relates to the technical field of die-casting die detection, the die-casting die thermal fatigue life detection device comprises a detection machine body and a control platform, and the top of the detection machine body is provided with a material thermal fatigue detection assembly and a mechanical load mechanism. When the device is used, the electric push rod pushes the heat insulation sleeve to penetrate through the penetrating hole and continue to move, and the movable turning cover is jacked upwards. Under the combination of the vacuum cavity, the honeycomb-shaped porous heat insulation plate and the metal foil reflecting screen, the heat insulation sleeve forms a triple barrier of reflection, vacuum and porous heat insulation, heat transfer is blocked, and it is guaranteed that cold air is not affected by heat of an air cooling opening when blown. When the material thermal fatigue detection assembly works, the cold air pipe and the heat insulation sleeve are located outside the detection box, the heat absorption temperature of the cold air pipe is prevented from increasing in the heating process, and the mold thermal fatigue detection precision and efficiency can be improved.

A shielded electrical connector is provided, comprising a plurality of wire elements, a plurality of wire element sheaths, an outer shielding sleeve, at least one inner shielding sleeve, a connector housing for accommodating terminal members, a shield divider for defining at least two shielding sectors, wherein the first subset of wire elements is extended into a first shielding sector and a second subset of wire elements is extended into a second shielding sector, at least one sealing insert for being arranged in one of the shielding sectors for sealing off a cable side from a connector side in the area of the shield divider, and an electrically conductive shielding bridge for electrically connecting the outer shielding sleeve to the at least one inner shielding sleeve and to the shield divider.

The invention relates to the technical field of partial discharge detection and sensor verification, and particularly discloses an ultrahigh frequency sensor relative amplitude online verification method for transformer bushing defects. The method comprises the following steps: firstly, spraying conductive paint into a lower porcelain bushing of the transformer bushing to form a creeping discharge channel, and constructing a transformer bushing operation simulation device; then, a standard calibration pulse generator is utilized to inject a discharge signal equivalent to a 10pC electric charge quantity at the defect position of the sleeve; then, the ultrahigh frequency sensor to be tested receives a partial discharge signal, and a relative amplitude model is established based on sensor frequency response, dielectric constant, signal propagation attenuation and installation conditions; and finally, comparing the actually measured signal amplitude with the calculated relative amplitude threshold, and if the amplitude is lower than the threshold, judging that the performance of the sensor is degraded. According to the method, the installation condition correction model is introduced, online evaluation of the sensitivity of the ultrahigh-frequency sensor under the condition that equipment is not disassembled is achieved, the real performance of the sensor in a complex field environment can be accurately reflected, and the reliability and maintenance efficiency of a transformer bushing partial discharge monitoring system are remarkably improved.

The invention provides a laser wire and powder collaborative additive manufacturing paraxial wire feeding equipment fixing device which comprises a fixing mechanism, a rotating mechanism, a wire twisting mechanism and a shielding gas mechanism, the fixing mechanism comprises a laser head and a clamping plate, a powder spray head is arranged at the laser head, and a molten pool for laser fusion of metal wires is arranged below the laser head and the powder spray head; the rotating mechanism comprises a connecting block and a rotating shaft, the connecting block is fixedly connected to one side of the clamping plate, the rotating shaft is rotationally connected with the connecting block, and a rotating shaft sleeve is arranged on the rotating shaft; the wire twisting mechanism comprises a wire feeding pipe, a wire twisting pipe and a wire guiding pipe which are communicated in sequence, the wire twisting pipe is fixedly connected with the rotating shaft sleeve, and a wire twisting cavity is formed in the wire twisting pipe; the protective gas mechanism comprises a cavity block and a connecting pipe, the cavity block is connected with the clamping plate, and the connecting pipe is used for connecting a protective gas bottle. Compared with the prior art, according to the scheme, the contact angle of the powder spray head of metal powder and the metal wire and the melting angle of laser and the metal wire can be adjusted, and then the forming quality of a metal component is guaranteed.

The application belongs to the technical field of embedded electrical sleeve welding processing, and particularly relates to an assembled building electrical embedded part welding clamp, which comprises a base, clamping mechanisms one for fixing both ends of a pipe body are arranged on both sides of the base, and clamping mechanisms two for positioning the side wall of the pipe body and the side wall of a wing ring are arranged on the upper side of the base. Through the cooperative action of the clamping mechanisms one and the clamping mechanisms two, the pipe body of a pre-sleeved wing ring is preliminarily placed on the center protrusion of the clamping mechanism one, then the slide plate of the clamping slide assembly is driven to move close, and the horizontal guiding and vertical positioning of the wing ring, the equidistance adjustment of adjacent wing rings, the height lifting of the pipe body and the wing ring, and the front and back centering of the pipe body and the wing ring can be simultaneously completed, without manually calibrating the wing ring spacing or repeatedly adjusting the concentricity, so that the processing time of a single sleeve can be shortened, and the cycle of the electrical sleeve in batch production can be greatly shortened.

Support structures and methods for securing at least one element, such as a wire or bundle of wires, in an opening of a panel or other structure. A support assembly may comprise a grommet having an opening to accommodate the at least one element and a bushing configured to clamp around an outer surface of the grommet. The bushing may comprise one or more petals configured to contact a first surface of the structure and one or more snaps configured to contact a second surface of the structure that is opposite to the first surface.

Techniques and apparatuses for forming electrical connection are presented in which an apparatus may include an in-line fuse having terminals comprising terminal exterior surfaces and terminal recesses, and electrical cables comprising a conductor and a insulation sleeve and having an exposed portion and an unexposed portion. The exposed portion of an electrical cable is at least partially inserted into a respective terminal recess of the in-line fuse. The apparatus may further comprise one or more temperature-activated sealing members that circumferentially surround and form a seal against portions of the terminal exterior surfaces of the in-line fuse and portions of the insulation sleeves of the electrical cables. The apparatus may also comprise an inner mold encapsulating the in-line fuse and at least partially of the one or more temperature-activated sealing members, and an outer mold encapsulating the inner mold.