2537 results about "Wire breakage" patented technology

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2500MPa-grade bridge cable and a manufacturing method of the high-strength complex-phase hot-rolled wire rod, after the high-carbon component of Nb-V-Mo is rolled and spun into a wire rod, the wire rod is subjected to online molten salt tail end quenching toughening treatment, so that the wire rod passes through front-section molten salt and is cooled at a cooling speed of greater than or equal to 38 DEG C / s, a part of austenite structure is transformed into quenched martensite, and a part of austenite structure is transformed into quenched martensite; the method comprises the following steps of: heating to a sorbite phase region temperature through a rear-section molten salt, controlling unconverted austenite to be converted into sorbite, performing isothermal tempering, controlling precipitation and growth of carbides, and finally performing slow cooling through a roller way to prepare a hot-rolled wire rod of which a microscopic structure comprises a complex-phase structure consisting of tempered martensite and tempered sorbite, wherein the tensile strength of the hot-rolled wire rod is 1710-1750MPa; the production method has the advantages that the material cost is controlled, the production efficiency is improved, and the production method is suitable for 2500MPa bridge cable production and is beneficial to reducing the risk of wire breakage in downstream cold drawing and subsequent processing processes.

The invention relates to a hot-rolled wire rod for a 2100MPa-grade bridge cable and a manufacturing method of the hot-rolled wire rod, after the hot-rolled wire rod is formed by rolling high Si-Mn chemical components and spinning at the spinning temperature of more than or equal to 955 DEG C, the wire rod is cooled at the cooling speed of more than or equal to 36 DEG C / s through online molten salt sorbite regulation and control treatment, enters a sorbite phase region from an austenite state, promotes sorbite phase transformation and is subjected to isothermal treatment to remove stress; and finally, roller way slow cooling is conducted, the hot-rolled wire rod with the microscopic structure comprising tempered sorbite with the volume percentage larger than or equal to 95% and the balance being a mixed structure composed of ferrite and fused sorbite is prepared, deteriorated structures such as network carbide and martensite can be effectively controlled, wire rod structure regulation and control, strength and plasticity matching and stable production are achieved, and the effects that the tensile strength is 1500-1540 MPa, the tensile strength is high, and the tensile strength is high can be achieved. The composite material is used in the application fields of manufacturing of 2100MPa-grade ultrahigh-strength bridge cables and the like, and is beneficial to reduction of the risk of wire breakage.

The invention relates to a hot-rolled wire rod for a 2200MPa bridge cable and a manufacturing method of the hot-rolled wire rod, a high-carbon V-containing chemical component design rolling production line is adopted, after the wire rod is spun into the wire rod at the spinning temperature of more than or equal to 920 DEG C, online molten salt rapid cooling isothermal treatment is carried out, the molten salt treatment time is controlled to be less than or equal to 300s, the wire rod is cooled at the cooling speed of more than or equal to 35 DEG C / s, and enters a sorbite phase region from an austenite state; according to the hot-rolled wire rod, a structure with sorbite as the main part is formed and subjected to isothermal weak tempering to remove stress, finally, roller way slow cooling is conducted, the hot-rolled wire rod with the microscopic structure comprising a mixed structure composed of weak tempered sorbite as the main part and ferrite and fused pearlite as the balance is prepared, the tensile strength can reach 1550-1590 MPa, the percentage reduction of area is 31%-36%, the mechanical property same-circle difference is smaller than or equal to 30 MPa, and the hot-rolled wire rod can be used for manufacturing the steel wire rod. The method is used in the application field of manufacturing of 2200MPa-grade ultrahigh-strength bridge cables and the like, the risk of wire breakage is reduced, and the strength grade of the bridge cables is improved.

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2100MPa bridge cable and a manufacturing method of the high-strength complex-phase hot-rolled wire rod, and the manufacturing method comprises the following steps: rolling and spinning C-Si-Mn-Cr-Mo chemical components into a wire rod, and carrying out online molten salt tail end quenching isothermal treatment, so that the wire rod firstly passes through front-section molten salt and is cooled at a cooling speed of more than or equal to 35 DEG C / s to enter a sorbite phase region from an austenite state; the method comprises the following steps of: controlling part of austenite to be converted into sorbite, cooling to a bainite phase through rear-section molten salt, carrying out end quenching, controlling bainite phase change, carrying out isothermal tempering to remove stress, and finally carrying out roller way slow cooling to prepare a complex-phase structure comprising tempered sorbite and tempered bainite, so that abnormal structures of network carbides and martensite can be effectively controlled; the high-strength composite phase structure control and plasticity matching are achieved, the tensile strength is 1530-1560 MPa, the percentage reduction of area is 30%-35%, and the method is suitable for manufacturing 2100 MPa-grade ultrahigh-strength bridge cables with large drawing amount and beneficial to reducing the risk of wire breakage.

The invention relates to a hot-rolled wire rod for a 1960MPa-grade bridge cable and a manufacturing method of the hot-rolled wire rod, after a C-Si-Mn-Cr hypereutectoid component is rolled and spun into a wire rod, the wire rod is subjected to online molten salt strong isothermal treatment, so that the wire rod firstly passes through front-section molten salt and is cooled at a cooling speed of more than or equal to 36 DEG C / s, and enters a sorbite phase region from an austenite state to promote transformation of part of austenite to sorbite; the method comprises the following steps: carrying out high-temperature heat treatment on a steel wire rod, then carrying out rear-section molten salt heating isothermal treatment to promote pearlite phase change and isothermal tempering, and finally carrying out roller way slow cooling to prepare a mixed structure with a microscopic structure mainly comprising tempered sorbite and tempered pearlite and the balance of ferrite and quasi-spheroidized carbide, so that a component system can be simplified, the structure of the steel wire rod is regulated to be uniform, and the service life of the steel wire rod is prolonged. The tensile strength is 1360-1410 MPa, the percentage reduction of area is 45%-50%, the requirement for the strength grade of a 1960 MPa bridge cable is met, and meanwhile the risks of wire breakage and unqualified torsion of manufactured wires are reduced.

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2100MPa-grade stranded wire and a manufacturing method of the high-strength complex-phase hot-rolled wire rod, after a C-Si-Mn-Cr-Mo high-carbon component system is rolled and spun into a wire rod, the wire rod is subjected to online molten salt strong quenching isothermal treatment, so that the wire rod is firstly subjected to front-section molten salt treatment and is cooled at a cooling speed of greater than or equal to 33 DEG C / s, and enters a bainite phase region from an austenite state; the method comprises the following steps: firstly, carrying out first-stage molten salt treatment to promote transformation of austenite into bainite, then carrying out later-stage molten salt treatment to form a structure mainly comprising bainite, carrying out isothermal tempering on the structure, reserving part of untransformed retained austenite, and finally, carrying out roller way slow cooling to promote transformation of the untransformed retained austenite into martensite, and carrying out tempering, the microstructure of the hot-rolled wire rod comprises a complex-phase structure composed of tempered bainite and tempered martensite, the tensile strength of the hot-rolled wire rod can reach 1435-1485 MPa, the percentage reduction of area of the hot-rolled wire rod is 31%-36%, off-line heat treatment of follow-up machining is avoided, and the risk of wire breakage is reduced.

The yarn pay-off device comprises a base, a supporting column is vertically arranged above the left side of the base, a pay-off barrel is installed above the supporting column, a box body is arranged on the upper surface of the middle of the base, a driving structure is arranged in the box body, and yarn pressing rollers are installed on the upper portion and the lower portion of the left side in front of the front face of the box body. A top plate is installed on the upper portion of the right side of the box body, a vertical rod is vertically connected to the lower portion of the top plate, the bottom end of the vertical rod is connected to the right side of the upper surface of the base, and wire pulling blocks are connected to the upper outer side and the lower outer side of the vertical rod correspondingly; a yarn body in the pay-off barrel penetrates through the yarn pressing roller, the yarn winding roller, the yarn breaking sensor and the yarn pulling block. According to the yarn pay-off device capable of detecting yarn breakage, the rotating speed of the winding roller is limited, so that the situation that yarn breakage occurs during pay-off is avoided, operation of the driving structure is stopped when yarn breakage is detected through the yarn breakage sensor, the problems of yarn leakage and the like of woven products are avoided, and the quality of the woven products is guaranteed.

The invention relates to the field of Czochralski single crystal furnace crystal bar production, in particular to a Czochralski single crystal shouldering control system, which comprises a CCD (Charge Coupled Device) information acquisition unit, a computer information storage processing unit and a PLC (Programmable Logic Controller) growth regulation unit, the computer information storage processing unit receives information acquired by the CCD information acquisition unit, then performs cloud data storage processing and outputs single crystal shoulder information of a corresponding time node to the PLC growth regulation unit, and the PLC growth regulation unit performs shouldering cooling amount control, automatic crucible lifting intervention in the shouldering process, automatic intervention control of equal-diameter liquid opening distance and pulling speed control. According to the method, the problems of shouldering line breakage and equal-diameter head line breakage caused by the fact that automatic regulation of the current shouldering pulling speed does not conform to actual growth of crystals are solved, and the consistency of field process parameter management is improved.

The invention relates to the technical field of stone cutting, and provides a diamond wire detection-based wire cutting system and a cutting method.The image acquisition module and the wire diameter detection module are arranged to obtain image information and the wire diameter of a diamond wire respectively, so that the actual abrasion loss of the diamond wire is obtained; the expected value of abrasion consumption in a cutting period is obtained in advance according to the take-up and pay-off length and the lifting speed of the workbench, and the abrasion loss condition of the diamond wire can be judged in time by comparing the actual abrasion value with the expected value, so that the take-up length and the speed of the workbench are adjusted in time to meet the cutting requirement; therefore, the abrasion rate of the diamond wire can be effectively controlled, wire breakage is prevented, and meanwhile the purposes of saving cost and improving stone cutting efficiency can be achieved.

The invention discloses a wire breakage alarm mechanism of a steel wire winding machine, and belongs to the technical field of steel wire winding, the wire breakage alarm mechanism of the steel wire winding machine comprises a connecting bottom plate, a steel wire winding mechanism is fixedly connected to one side of the top of the connecting bottom plate, and a steel wire winding main body is wound on the steel wire winding mechanism; a supporting frame assembly is fixedly connected to the center of the top of the connecting bottom plate, a rotating frame assembly is rotatably connected to the supporting frame assembly, a clamping and fixing mechanism is slidably connected to the rotating frame assembly, and a detection and alarm mechanism is fixedly connected to the clamping and fixing mechanism. By designing the clamping and fixing mechanism and the detecting and alarming mechanism, when a winding steel wire body is broken, two connecting copper sheets are attached to each other to achieve circuit conduction, two alarms give an alarm after being powered on, meanwhile, the clamping and fixing mechanism is designed, and the multiple steel wire clamping rods can be fixed; and the device is always located at the central position.

The present invention provides a diamond wire laser welding method and a system. The method comprises: positioning two ends of a broken wire to make the two ends opposite to each other; respectively carrying out section shearing and cleaning on the two ends; acquiring pictures of the two ends by using a visual detection module, detecting and calculating the concentricity of the two ends, and controlling the two ends to automatically adjust the positions thereof to make the two ends concentric; aligning a target heating light spot of a laser generation module to a molten pool part composed of the two ends and a limited space around the two ends, and starting laser heating welding; monitoring a real-time temperature and a real-time crystal phase of the molten pool part, adjusting the heating power of the laser generation module on the basis of the real-time temperature, determining whether the degree of match between a real-time crystal phase image and a target crystal phase image is greater than a first threshold, and if yes, stopping welding; and polishing the weld, performing annealing and completing welding. The welding method of the present invention has a high degree of automation, laser welding is carried out by using the laser generation module, heating is fast, efficiency is high, and accurate and automatic welding is achieved by determining a crystal phase image.

The present invention discloses a wire break protection device for a stainless steel wire drawing machine, which relates to the technical field of wire drawing machines, and includes a wire break protection structure arranged behind a wire drawing die in the wire drawing machine, wherein the wire break protection structure includes: a wire reel assembly, which is arranged in two groups, and each group of the wire reel assembly includes two wire reels. The present invention adopts a method of "clamping" and "extending" to prevent the wire from moving. After the stainless steel wire breaks, the elastic disk senses the change of the stainless steel wire drawing, thereby releasing the lock between the buckle disk and the actuating disk, and further, the buckle disk and the actuating disk rotate. Through the rotation of the actuating disk, the sliding connecting rod is cooperated to realize the clamping of the wire end by the wire clamping assembly, realizing the process of "clamping"; through the rotation of the actuating disk, the connecting rod A and the connecting rod B are cooperated to realize the movement of the wire extension assembly and the wire reel assembly, so that the wire end is wound around the winding roller, realizing the process of "extending".

The invention relates to a hot-rolled wire rod for a 2100MPa-grade stranded wire and a manufacturing method thereof, after a high-carbon and high-silicon component system is rolled and spun into a wire rod, the wire rod is cooled at a cooling speed of more than or equal to 31 DEG C / s through online molten salt sorbite regulation and control treatment, and enters a sorbite phase region from an austenite state; the method comprises the following steps of: forming a structure mainly comprising a sorbite structure, performing isothermal tempering, promoting fusing of a part of sorbite lamellas, and finally performing roller way cover opening and slow cooling to prepare the hot-rolled wire rod of which the microscopic structure comprises a mixed structure consisting of tempered sorbite, tempered ferrite and fused sorbite, so that alloy components can be simplified, and the strong plasticity matching and the structure uniformity of the wire rod can be improved; the tensile strength is 1420-1470 MPa, the percentage reduction of area is 36%-41%, the composite material is used for the application field of manufacturing 2100 MPa grade stranded wires and the like, off-line heat treatment can be avoided, and the risk of wire breakage during downstream drawing and twisting is reduced.

The invention discloses a wind driven generator blade lightning conductor broken line point positioning method based on a radio frequency transformer, and relates to the field of wind driven generator blade lightning conductor broken line point positioning. A to-be-detected line is connected in series with the radio frequency transformer before being injected into traveling waves, and the change of traveling wave current is converted into the change of transformer output voltage; therefore, the output voltage of the radio frequency transformer is detected to judge the arrival time difference of the incident wave and the reflected wave, and then the breakpoint position is judged by multiplying the wave velocity by the time difference and dividing by 2. According to the wind driven generator blade lightning conductor breaking point positioning method based on the radio frequency transformer, the position of the lightning conductor breaking point can be efficiently, accurately, conveniently and flexibly detected at low cost, positioning measurement of disconnection of a multi-core wire part can be achieved, the specific positions of the breaking point and an abnormal point of the lightning conductor can be effectively determined, and the working efficiency is improved. After the positions of the broken line point and the abnormal point are determined, specific positions are repaired in a targeted manner, so that the cost for replacing the lightning conductor is saved.

The invention discloses a motor coil winding device and method, and belongs to the technical field of motor manufacturing, the motor coil winding device comprises a winding machine body, the upper surface of the winding machine body is fixedly connected with a pair of supporting plates, and the outer surfaces of the supporting plates are provided with self-adaptive floating wire protection assemblies; a wire dynamic regulation and control assembly is installed on the upper surface of the winding machine body, a fixing piece is installed on the upper surface of the winding machine body, and a winding displacement quality sensing assembly is installed on the portion, close to the fixing piece, of the upper surface of the winding machine body. The magnetorheological fluid in the magnetorheological fluid damper rapidly changes the rheological property under the action of a real-time control magnetic field, vibration transmission is effectively restrained, the phenomenon that a wire is broken due to too large tension is avoided, when it is monitored that the tension is too small, the magnetic powder brake increases the resisting moment and slows down the rotating speed of the pay-off reel to improve the tension, and if the tension is too large, the magnetic powder brake stops working. The magnetic powder brake reduces the resistance moment and accelerates the pay-off, and ensures that the wire is always at the optimal traction angle.

The invention relates to a hot-rolled wire rod for a 1960MPa-grade stranded wire and a manufacturing method of the hot-rolled wire rod, after high-carbon components of C-Si-Mn-Cr-B are rolled and spun into a wire rod, the wire rod is subjected to rapid online molten salt isothermal treatment, and the wire rod is subjected to front-section molten salt treatment, so that the wire rod is cooled at the cooling speed of more than or equal to 32 DEG C / s and enters a sorbite phase region from an austenite state; the steel wire rod is subjected to rear-section molten salt treatment, the molten salt temperature is reduced, unconverted retained austenite is promoted to be converted into the sorbite structure, meanwhile, isothermal tempering of the structure and fusing of a part of sorbite lamellas are promoted, and finally slow cooling is conducted through a roller way; the microstructure of the hot-rolled wire rod comprises a mixed structure composed of tempered sorbite, ferrite and fused sorbite, the tensile strength is 1305-1355 MPa, the percentage reduction of area is 37%-42%, and the hot-rolled wire rod is used for being used as base metal to manufacture high-strength stranded wires and other application fields and is beneficial to reducing the risk of wire breakage.

The invention relates to a hot-rolled wire rod for a 2400 MPa bridge cable and a manufacturing method of the hot-rolled wire rod, after high-carbon components of Cr-Mo-V are rolled and spun into a wire rod, the wire rod is subjected to online molten salt rapid cooling isothermal treatment, so that the wire rod is cooled at the cooling speed of more than or equal to 32 DEG C / s and enters a sorbite phase region from an austenite state to form a structure taking sorbite as a main part, and precipitation and growth of carbides are controlled; and finally, roller way slow cooling is conducted, the hot-rolled wire rod with the microscopic structure comprising a mixed structure composed of tempered sorbite, ferrite and fused pearlite is prepared, the strength and plasticity matching performance of the wire rod can be improved, the mechanical property fluctuation can be reduced, the tensile strength can reach 1640-1680 MPa, the percentage reduction of area can reach 27%-32%, the mechanical property same-circle difference is smaller than or equal to 45 MPa, and the tensile strength of the wire rod can reach 1640-1680 MPa, the percentage reduction of area can reach 27%-32%, and the mechanical property same-circle difference is smaller than or equal to 45 MPa. And rapid and stable production is facilitated, the method is used for manufacturing the 2400 MPa bridge cable, and the wire breaking risk can be reduced easily.

The application relates to the technical field of stone cutting equipment, in particular to high-efficiency stone wire saw cutting equipment, which is characterized by comprising a mounting frame, a lifting frame, a lifting driving mechanism, a stone clamping and placing mechanism and a wire saw cutting mechanism, the lifting frame is arranged in the mounting frame and is slidably connected to the mounting frame through a first sliding assembly, the lifting driving mechanism is arranged on the mounting frame and is used for driving the lifting frame to lift, the stone clamping and placing mechanism is arranged below the lifting frame and is used for clamping and placing a stone body, and the wire saw cutting mechanism is arranged on the lifting frame. The application can effectively reduce the wire breaking probability of the cutting wire, the threading overhauling after wire breaking is relatively convenient, and the consistency of the tension among the multiple cutting wires can be effectively ensured.

The invention discloses a PCCP broken wire signal detection method based on improved YOLOv8, and belongs to the technical field of hydraulic engineering detection. The method comprises the following steps: S1, carrying out a PCCP broken wire prototype test by adopting a distributed optical fiber sensor, collecting sound wave signals generated in the test process, and sorting and screening the collected data to obtain a PCCP broken wire one-dimensional sound wave signal data set; s2, processing and converting the one-dimensional sound wave signal into a two-dimensional spectrogram by adopting synchronous extrusion wavelet transform, labeling, and constructing a data set; s3, training the improved YOLOv8 model by using the data set in the S2, and carrying out broken wire signal identification detection by using the improved YOLOv8 model; performance evaluation is carried out, and the model meeting the evaluation requirement serves as a final target detection model and is used for detecting the wire breakage signal under the PCCP body running state. According to the invention, the problem of insufficient detection and identification of the broken wire signal in the operation process of the PCCP body can be solved, and accurate detection is realized.

The present invention relates to the technical field of tungsten alloy materials, and in particular to a tungsten alloy wire, and a preparation method therefor and a use thereof. The tungsten alloy is composed of the following elements in percentage by mass: 0.45-0.9 wt% of L, 0.05-0.2 wt% of oxygen, and the balance being tungsten and inevitable impurities, wherein L is one or more of lanthanum, cerium, praseodymium, neodymium, gadolinium, and samarium, the wire has a wire diameter of 20-60 μm, in the wire, L or compounds of L exist in the axial direction of the wire in a linear shape, and the average width D of L or the compounds of L in the radial direction is less than or equal to 5 nm. The element L is controlled to be doped between the tungsten base materials in a linear shape, and the average width D of L in the radial direction to be less than or equal to 5 nm, so that cracks and wire breakage caused by second-phase particles in the subsequent pressure machining process are greatly reduced, thereby guaranteeing the mechanical strength of the tungsten alloy wire, and thus the wire has a tensile strength of 5000 MPa or above under a wire diameter of 20-60 μm, and the machining performance of the tungsten alloy wire is enhanced.

To provide an anti-theft device for a cable which detects a sign of cable cutting before the cable itself is cut, issues a warning to the thief, contacts various security stations to capture the thief, and makes the thief give up the theft before the cable is cut. [Solution] The cable anti-theft device 10 comprises one or more theft sign detection conductive wires 6a, 6b, 6c covered with an insulator that are attached along the longitudinal direction of the cable 1 near at least both connection ends of the cable 1 and that detect a theft-premonition break that occurs when the cable 1 is intentionally cut; detection circuits 30a, 30b, 30c, etc. that detect the break by a change in voltage and / or current based on the theft-premonition break; a notification circuit 40 that issues a break signal based on the detection of the break; and an operation circuit 60 that operates the security device 90 based on the break signal.

The invention discloses a double-layer aeration system for preventing wire breakage and sludge deposition of an MBR double-layer component membrane pool, which comprises a raw water pool, a raw water inlet peristaltic pump, an MBR double-layer component membrane pool, a perforated aeration pipe, a pulse aeration box, an aeration pump, a gas meter, a water outlet gear pump, an ultrafiltration membrane component, a pressure sensor, a transmembrane pressure difference display, a sludge discharge peristaltic pump and a water outlet pool, the MBR double-layer assembly membrane pool comprises a first MBR membrane assembly and a second MBR membrane assembly, the first MBR membrane assembly and the second MBR membrane assembly are arranged in parallel, and the perforated aeration pipe and the pulse aeration box are configured to be used as aeration assemblies of the first MBR membrane assembly and the second MBR membrane assembly. According to the invention, the membrane is physically scrubbed by utilizing different aeration modes and a double-layer aeration mode, so that the phenomena of membrane pollution, sludge accumulation and wire breakage are effectively relieved, a reliable theoretical basis is provided for transforming an MBR membrane tank into a double-layer aeration mode in a water purification plant using the MBR hollow fiber membrane, and meanwhile, the method has important significance on reducing pollution and carbon.

The invention discloses a broken line repairing circuit and method, a display panel and display equipment, and relates to the technical field of display, and the circuit comprises a gate line array, a gate driving module, a broken line detection module and a compensation module, when the gate driving modules arranged on the left side and the right side of the gate line array respectively output gate signals to the gate signal lines in the corresponding rows line by line according to a preset row scanning sequence; the method comprises the following steps: monitoring an input current signal of each gate signal line when a gate driving module outputs a gate signal line by line through a disconnection detection module, and generating a disconnection data signal comprising a rising edge detection current and a disconnection gate line according to the input current signal; through a compensation module, a broken line data signal sent by a broken line detection module is received, a gate compensation digital signal is generated according to a rising edge detection current, and a broken gate line is repaired according to the gate compensation digital signal, so that the broken gate signal line is repaired to improve the product yield of a display panel.

The invention relates to the technical field of metal wire processing, discloses copper alloy fine wire drawing equipment, and solves the problems that in the multi-stage drawing process of copper wire drawing equipment, due to the fact that the initial diameter of a raw material copper wire is uneven and the variation of unit length increase is unstable due to wire diameter fluctuation in the drawing process, the tension of the copper wire on a guide wheel is frequently changed, and the drawing quality is influenced. Therefore, the tension thread breaking phenomenon is easily caused. The first deformation structure is located between the outer guide wheel and the assembly disc, in the copper wire drawing process, adaptive deformation can be generated according to wire diameter changes, the outer guide wheel is pushed through reverse elastic force of the elastic recovery trend of the first deformation structure, and the fluctuation variation of increase of the unit length of the copper wire is self-adapted.

The invention relates to the technical field of textile, in particular to a high-speed doubling machine control system for yarn production, which comprises a master control system and a plurality of winding units, and the winding units are used for winding a plurality of strands of spun yarns into a strand of rough yarns; the number of the sub-control units is matched with the number of the winding units, one sub-control unit is connected with one winding unit, the multiple sub-control units are all connected with the master control system, and the sub-control units are used for controlling the winding length of each winding unit, receiving wire breaking signals and controlling the winding units to stop. Under the condition of yarn breakage, the operation of the corresponding winding unit can be directly stopped through the system, so that the situation of abnormal winding is avoided, the production stability of equipment is improved, the failure rate is reduced, the maintainability of the equipment is improved, the maintenance cost of the equipment is reduced, and the yarn winding and production efficiency is improved.

The invention provides a method for testing breakage of a film covered wire. The method comprises the following steps of: 1, respectively sampling a section of a wire with the length of 1m and a section of a wire with the length of 10m; step 2, respectively measuring weight values and direct-current resistance values of the 1-meter sampling line and the 10-meter sampling line to obtain a weight value G1 of the 1-meter sampling line, a direct-current resistance value R1 of the 1-meter sampling line, a weight value G2 of the 10-meter sampling line and a direct-current resistance value R2 of the 10-meter sampling line; step 3, calculating the direct current resistance change rate according to a formula delta R = {R2 / [R1 * (G2 / G1)]-1} * 100%; 4, when the direct-current resistance change rate delta R is smaller than a set percentage, the wire is judged to be qualified; and when the direct-current resistance change rate delta R is greater than or equal to a set percentage, judging that the wire has the wire breakage defect. According to the invention, the resistance abnormity caused by broken line and non-broken line factors can be effectively distinguished, and the misjudgment rate is reduced; and meanwhile, quantitative line breakage degree evaluation can be realized, and a technical basis is provided for formulating an industrial line breakage detection standard.

The invention relates to the technical field of cutting nippers, and discloses an unmanned aerial vehicle mounted distribution network live-line broken lead cutting nipper device which solves the problem that existing cutting nippers need manual operation and have certain dangerousness, the unmanned aerial vehicle mounted distribution network live-line broken lead cutting nipper device comprises an unmanned aerial vehicle body, and a suspension supporting mechanism is fixedly arranged in the middle of the bottom end of the unmanned aerial vehicle body; an electric telescopic rod is arranged in the middle of the suspension supporting mechanism in a penetrating mode, a shearing mechanism is arranged at one end of the electric telescopic rod, a counterweight assembly is fixedly arranged at the other end of the electric telescopic rod, the shearing mechanism is composed of a supporting arm, a shearing assembly and an anti-swing traction assembly, and the supporting arm is fixedly connected to one end of the electric telescopic rod. The shearing assembly is connected to the supporting arm, and the anti-swing traction assembly is arranged on the shearing assembly in a sleeving mode and connected with the supporting arm. Through the cutting nipper device, mounting can be carried out through the unmanned aerial vehicle, so that remote wire breaking operation is achieved, the use safety is improved, meanwhile, a lead can be pulled, and the lead is prevented from swinging.

The invention relates to a high-speed wire twisting device capable of preventing wire breakage, and the device comprises a supporting table which is provided with a plurality of positioning frames, the positioning frames are arranged on the supporting table at equal intervals, and each positioning frame is provided with a plurality of wire feeding wheels which are used for feeding a plurality of metal wires; the stranding machine main body is arranged on one side of the supporting table, a bearing plate is arranged at a wire inlet of the stranding machine main body, a wire separating assembly and a wire doubling assembly are arranged on the bearing plate, and a plurality of metal wires sequentially penetrate through the wire separating assembly and the wire doubling assembly; the tensioning assembly is arranged on the positioning frame, is arranged between every two wire feeding wheels and is used for adjusting the wire feeding tensioning force of the metal wire; and one side, far away from the positioning frame, of the wire breaking prevention assembly is arranged on the supporting table. The metal wire breakage risk caused by uneven tension can be reduced, and the stability and reliability of equipment are improved.

The invention relates to a novel switching value signal collector for disconnection detection. The novel switching value signal collector comprises a transformer T1, a full rectifier bridge composed of four diodes, a hysteresis comparator and a switching value collection and diagnosis processor. The transformer T1 is used for reducing the voltage of an alternating current power supply to a signal source of a safe voltage value, the first end of the signal source is connected with the diode D1 and the input end of the switch contact parallel circuit, the output end of the signal source connected with the diode D1 and the switch contact parallel circuit is connected with an upper bridge arm of the full-rectifier bridge, and the second end of the signal source is connected with a lower bridge arm of the full-rectifier bridge. The negative end of the full-rectifier bridge is grounded, the positive end of the full-rectifier bridge is input to the hysteresis comparator, the hysteresis comparator outputs to the switching value acquisition and diagnosis processor, and the switching value acquisition and diagnosis processor judges whether the external switch contact is switched off or switched on or a line is broken by acquiring waveforms. The method has the beneficial effects of high recognition accuracy and difficulty in interference.

The invention belongs to the technical field of cable armoring, and particularly relates to an armoring forming device and a cable armoring method.The armoring forming device comprises a base, and the top of the base is rotationally provided with an annular rotating ring through a driving mechanism; the front side and the rear side of the base are respectively provided with a conveying mechanism used for conveying an unarmored cable and an output mechanism used for outputting the armored cable. According to the device, a flexible friction plate in the cleaning mechanism is adjusted through an adjusting mechanism, the position can be adjusted according to metal wires with different outer diameters, burrs can be properly scraped during winding, damage of the burrs to a cable is reduced, the service life of the armored cable is prolonged, and meanwhile the applicability of the device to the metal wires with different specifications is improved; the rotating friction force of the winding rod can be changed through the control mechanism, so that the tensioning force of metal wire feeding is properly adjusted, too loose or tight wire feeding is avoided, the fitting degree of a metal wire and a cable is guaranteed, the wire breaking condition is reduced, and the stability and reliability of the armoring process are improved.