58results about How to "Reduce maintenance work time" patented technology

The invention discloses a quick replacement method for movable pulley blocks and wire ropes in cranes. The method includes: 1, lowering an old movable pulley block to a proper position; 2, cutting off an old wire rope and re-setting a wire rope; 3, welding the old wire rope; 4, firmly welding the end of the new wire rope to the end of the old wire rope; 5, positively rotating a reel to wind the wire ropes; 6, cutting off a soldering point; 7, removing the old wire rope thoroughly; and 8, using another lifting system to drive and lift the two ends of the new wire rope pulled to the movable pulley block to the reel, and pressing the two ends of the wire rope into a pressure plate to end the replacement process. The method has the advantages of labor saving, simplicity in operation, and high automation level.

The invention discloses a method for automatically generating overhaul safety measures of a secondary system of an intelligent substation. The process for automatically generating the overhaul safety measures comprises the steps of importing an SCD file, performing automatic instantiation on an overhaul equipment and compulsorily-stopped equipment relation template database, performing automatic instantiation on a single equipment safety isolation measure template database, selecting overhaul equipment, automatically generating an overhaul operation, and correcting and verifying the overhaul safety measures in a patterning way. By adoption of the method, assistance is provided for the operational safety of fault-elimination of onsite secondary equipment, and reorganization and expansion of the substation; a training platform for the overhaul operation of the secondary overhaul team also can be provided; and therefore, a technological foundation is laid to remote overhaul safety measure implementation and remote overhaul safety measure implementation result supervision for an unmanned substation in the future.

The invention discloses an all-in-one machine system for loosening and tightening maintenances of railroad sleeper bolts and nuts in the loosening and tightening maintenance field of the railroad sleeper bolts and nuts. The all-in-one machine system comprises a digital display control system, a power system, a hydraulic loosening and tightening system, an outputting mechanism and an oil coating system; and during the process that the hydraulic loosening and tightening system is used for adjusting the bolts and nuts by the outputting mechanism, the oil coating system is used for coating oil on the threads of the bolts by the outputting mechanism. With the adoption of the all-in-one machine system for the loosening and tightening maintenances of the railroad sleeper bolts and nuts, the maintenance work time of the bolts and nuts of an existing railroad sleeper is greatly shortened, the efficiency is improved, the work strength of an operator is reduced, oil coating work is synchronized when the loosing, tightening and showing work of the bolts and nuts of the existing railroad line sleeper is performed, the existing technology is improved and optimized, accuracy control and monitoring are achieved, one-step is really finished and actual work efficiency is increased in several times.

The invention relates to an online intelligent detection system for pressure of a current collector for rail transit, which belongs to the technical field of rail transit detection devices. The systemcomprises an upper computer placed on a DCC of a vehicle depot and a lower computer in two-way communication with the upper computer through a wireless communication module, and the lower computer isfixed to one side of a station track; detection devices are installed on the two sides of the station track in the direction of the warehouse-out end of a vehicle depot application warehouse respectively, each detection device comprises a contact rail and a pressure sensor, a movable face is arranged on the contact face of each contact rail, and the back of each movable face is connected with thecorresponding pressure sensor to form an acquisition channel. the upper part, the side part or the lower part of each contact rail is in contact with the current collector; the pressure sensor is indynamic contact with the current collector and transmits an acquired current collector pressure signal to the lower computer; and the lower computer stores the processed data in an SD card and transmits the processed data to the upper computer through the wireless communication module. The pressure sensor with higher precision is adopted, the pressure value of the current collector can be intelligently and automatically measured, and manpower is greatly saved.

The invention relates to a blast furnace hot blast stove coal gas system high-efficiency coal gas dispelling method. The blast furnace hot blast stove coal gas system high-efficiency coal gas dispelling method comprises the steps of connecting a three-way pipe to an outlet valve of a coal gas preheater before damping down of a blast furnace, connecting one end of the three-way pipe with an original coal gas drainer, connecting one end of the three-way pipe with a nitrogen hose, and communicating a port of the nitrogen hose with a nitrogen pipeline at a coke oven gas blending combustion valve;fully turning on a nitrogen purging valve to conduct purging on a coal gas pipeline after damping down of the blast furnace and burnout of a hot blast stove; turning off a front ball valve of a crudegas preheater drainer and turning on a nitrogen valve after no accumulated water continuously flows out from the coal gas preheater drainer, and introducing nitrogen into the colas gas preheater; andturning on the nitrogen valve in the position again after closing a lower blind plate of the coke oven gas blending combustion valve and introducing nitrogen into a coke oven gas blending combustion pipeline and a mixed coal gas main. Through the blast furnace hot blast stove coal gas system high-efficiency coal gas dispelling method, the total volume of nitrogen introduced into a coal gas systemis increased, effective replacement of nitrogen and coal gas in the pipelines is accelerated, and the purging time is substantially shortened.

The invention relates to a refractory material for a rotary kiln and a preparing method thereof and belongs to the technical field of refractory materials. The refractory material comprises, by weight, 20-25 parts of beta-SiC, 8-15 parts of needle coke, 60-70 parts of porous periclase-magnesium aluminate spinel ceramic fine powder, 2-5 parts of silica powder, 2-5 parts of floating bead, 3-5 parts of alumina fibre, 7-10 parts of boron carbide powder and 2-5 parts of binding agent. The method for preparing the refractory material for the rotary kiln is simple and reliable, the prepared refractory material has the advantage of being high in compression strength, wear resistance, thermal shock performance and medium erosion resistance, construction is convenient, the service life of the refractory material for the rotary kiln is prolonged greatly, normal production of an enterprise is guaranteed, maintenance time is shortened to the maximum degree, and maintenance cost is reduced to the maximum degree.

The invention discloses a novel hydraulic balance heat supply method. An electric flow control valve is installed on a backwater portion of a primary network of each heat exchange station, and the purpose of hydraulic balance of the primary networks is achieved. The method comprises the steps that self-operated type flow control valves are installed for users in the heat supply regions below the heat exchange stations; the self-operated type flow control valves are adjusted according to resident indoor temperature target values, and the initial flow of each user is set; movable type temperature sensors are installed for heat supply typical users, and the indoor temperature is automatically monitored; the initial flow of the self-operated type flow control valve of each typical user is adjusted according to the difference between the temperature of the typical user and the target temperature, and therefore the resident indoor temperature can be same or similar; and circulating water pumps and heating equipment are improved, a heat supply running medium adjustment curve is set, and the supply water temperature is controlled according to the heat supply running medium adjustment curve. By the adoption of the novel hydraulic balance heat supply method, the hydraulic balance of the primary networks of the heat exchange stations can be achieved, the purpose that the resident indoor temperature of all heat supply users in the heat supply regions is same or similar is achieved, the user complaint rate is reduced, and the energy is substantially saved.

The invention discloses an automatic drainage device of a rail vehicle air pipeline system. The automatic drainage device comprises a control unit, a control air source pipeline, a transition connecting flange, a filtering element, an automatic drainage valve and the like. The automatic drainage device can be synchronously started with an air compressor, the accumulated water of a main air reservoir can be automatically drained, the quality of air inside the rail vehicle air pipeline system can be improved, and the problems that due to the fact the accumulated water corrodes the pipeline, valve types are clamped and stagnated and other brake systems break down are solved. The automatic drainage valve comprises an automatic drainage functional assembly and a manual drainage functional assembly, the automatic drainage functional assembly is provided with a valve seat cavity, an automatic drainage piston and a compression reset spring are arranged inside a lower valve cover, and the up-and-down movement of the automatic drainage piston controls opening and closing of a valve port M of an upper half ball valve and a valve N of a lower half ball valve. Condensate water in an air pipeline and the main air reservoir can be drained in time, the condensate water in the rail vehicle air pipeline system is prevented from flowing into a brake device, and the driving safety of a rail vehicle in the process of applying and maintaining is guaranteed.

The invention relates to a three-way hemispherical valve based on normal operation and online pressure maintenance of a pipeline. The valve comprises a valve body and a hemispherical valve core; threechannels are formed in the valve body and include a fluid entering channel, a fluid flowing-out channel and an online maintenance channel; an opening and closing sealing pair matched with the hemispherical valve core for sealing is arranged in the fluid flowing-out channel; a maintenance sealing pair matched with the hemispherical valve core for sealing is arranged in the online maintenance channel; a maintenance sealing gland is mounted on the outer end surface of the online maintenance channel; a pressure relief component and a pressure gauge which communicate with the online maintenance channel are arranged on the online maintenance channel; the hemispherical valve core is located in a valve cavity of the valve body; and a hemispherical valve core rotating shaft is mounted on the valvebody and is connected with an external driving device. The invention further relates to an online pressure maintenance method on the basis of the hemispherical valve. According to the valve and the method, normal operation and online maintenance operation of the pipeline can be realized, the problem that normal operation and online maintenance of the pipeline cannot be realized by the aid of hemispherical valves or other valves in the market at present is solved, the maintenance cost is reduced, the maintenance operation time is shortened, and the labor intensity is reduced.

The invention relates to a device for pulling out a cylinder head fuel injector sleeve. The device is characterized by mainly comprising a threaded rod, one end of the threaded rod is a threaded end and the other end of the threaded rod is of a taper structure; an expanding sleeve is sleeved on an upper part of the taper end of the threaded rod; a spacer sleeve is sleeved on the threaded rod at the upper end of the expanding sleeve; the spacer sleeve can freely slide on the threaded rod; a lock nut is arranged on the threaded rod above the separating sleeve; and two lock nuts are arranged at the threaded end part of the threaded rod. In the invention, an expanding type principle is adopted and is implemented in such a ways that: by adjusting the lock nuts, the spacer sleeve tightly presses the expanding sleeve, an external surface of the expanding sleeve tightly presses an inner wall of the fuel injector sleeve, then a certain friction force exists between the expanding sleeve and the fuel injector sleeve; and after the expanding sleeve tightly presses the fuel injector sleeve, the device provided by the invention is pulled out so as to pull out the fuel injector sleeve by depending on the friction force between the expanding sleeve and the fuel injector sleeve, the lock nuts are unlocked after the fuel injector sleeve is pulled out, and the dismounting work can be completed just by dismounting the fuel injector sleeve. Thus, the device provided by the invention has a simple structure, and is convenient to use, the technology for maintaining an O-shaped ring of a cylinder head is simplified, the time for maintenance work is shortened, meanwhile, the labor intensity of operators is also lowered.

The invention provides a jacking device and method for replacing a steel ladle rotating disc bearing and belongs to the technical field of continuous casting machine steel ladle rotation table maintenance equipment. The jacking device and the method are used for replacing the steel ladle rotating disc bearing of a steel ladle rotation table fast. According to the technical scheme, a replacing toolcomposed of jacking hydraulic devices, a sliding support and a locating device is utilized for replacing the steel ladle rotating disc bearing. The same four jacking hydraulic devices jack the steelladle rotation table synchronously, an old steel ladle rotating disc bearing is disassembled and moved out by means of the sliding support, the new steel ladle rotating disc bearing is moved in and installed, and the locating device ensures accurate location of the steel ladle rotation table and the steel ladle rotating disc bearing. According to the device and the method, the problems that the steel ladle rotating disc bearing is complex to replace, and deviation rectifying is difficult are solved, the steel ladle rotating disc bearing of the steel ladle rotation table can be replaced fast and efficiently, the maintenance operation time is shortened substantially, the construction working efficiency is improved, the labor intensity of workers is reduced, the installing precision of the steel ladle rotating disc bearing is improved remarkably, and the security risk in the replacing process is reduced.

A lift truck for replacing or overhauling a disconnecting switch comprises a base, trundles, stand columns, a hand wheel, a left transporting base, a left tackle, a left pulley, beams, a right pulley, a right trolley, a right transporting base, a limit plate and a winch, wherein the trundles are installed on the lower portion of the base, the two stand columns are installed on the left side and the right side on the base, the hand wheel is installed on the lower portion of the left side stand column, the left pulley is installed on the upper portion of the left side stand column, the left transporting base is fixedly connected with the left tackle, and the left tackle is installed on the left side stand column. The winch is installed on the right side of the upper portion of the base, the right pulley is installed on the upper portion of the right side stand column, the right trolley is installed on the right side stand column, the right transporting base is fixedly connected with the right trolley, and two ends of the two beams are welded between the two stand columns. The lift truck for replacing or overhauling the disconnecting switch has the advantages of being simple in principle structure and capable of achieving rising and falling through a hand mode or an electric mode, effectively saving physical power of maintainers and improving overhauling or replacing efficiency of a disconnecting link practically, so that reliability of mains supply is improved.

The invention discloses an oil circuit cleaner for a hydraulic oil cylinder. The oil circuit cleaner for the hydraulic oil cylinder comprises a placement frame, a connector I, a spray head I, a leather pipe I, a connector II, a spray head II and a leather pipe II, wherein the connector I, the spray head I and the leather pipe I form a cleaner; the connector II, the spray head II and the leather pipe II form a telescopic cleaner; two circular holes are formed in the surface of the placement frame; the two cleaners are placed in the circular holes; one end of the connector I is connected onto the leather pipe I; the other end of the connector I is connected onto the spray head I; one end of the connector II is connected onto the leather pipe II; the other end of the connector II is connectedonto the spray head II; and at least two through holes with the diameter sizes being 2mm to 5mm are formed in the surfaces of the spray head I and the spray head II, so that each inch of surface of the hydraulic oil cylinder can be cleaned, the generation of dead angles incapable of being cleaned is avoided, the service life of the hydraulic oil cylinder is prolonged, and the production expense is reduced.

The invention discloses a load-lifting device for maintaining and hoisting a continuous casting withdrawal and straightening machine. The load-lifting device is characterized by comprising a hanging beam; the hanging beam is provided with a hanging hole plate; the hanging hole plate is provided with a hanging hole; and hanging hooks used for hooking a withdrawal and straightening machine hoistingshaft is arranged below the hanging beam. The special hoisting tool for maintaining and hoisting a continuous casting withdrawal and straightening machine is used for specially hoisting a bloom casteror a round billet caster withdrawal and straightening machine for online mounting, offline maintenance and care and offline transportation to different positions, is convenient for an equipment maintenance person to safely and stably hoist the withdrawal and straightening machine, avoids the trouble of an operator to frequently climb for threading a hoisting steel wire rope, completely eradicatesthe safety hidden dangers in the maintenance process, greatly shortens the withdrawal and straightening machine hoisting and maintenance operation time, reduces the labor intensity and improves the maintaining and hoisting operation efficiency.

The invention discloses a method for automatically generating overhaul safety measures of a secondary system of an intelligent substation. The process for automatically generating the overhaul safety measures comprises the steps of importing an SCD file, performing automatic instantiation on an overhaul equipment and compulsorily-stopped equipment relation template database, performing automatic instantiation on a single equipment safety isolation measure template database, selecting overhaul equipment, automatically generating an overhaul operation, and correcting and verifying the overhaul safety measures in a patterning way. By adoption of the method, assistance is provided for the operational safety of fault-elimination of onsite secondary equipment, and reorganization and expansion of the substation; a training platform for the overhaul operation of the secondary overhaul team also can be provided; and therefore, a technological foundation is laid to remote overhaul safety measure implementation and remote overhaul safety measure implementation result supervision for an unmanned substation in the future.

The invention provides a method for quickly replacing a roller shitting oil cylinder of a hot continuous rolling finishing mill. The method is characterized by comprising the following steps of: horizontally pulling a shaft head of a main shaft to one side 130 millimeters by using a three-ton guide chain to ensure that the main shaft body swings horizontally; taking the roller shifting oil cylinder out of the space between the main shaft and a locking frame; cleaning the slide way of the roller shifting oil cylinder, and coating new lubricating oil on the slide way; moving the new roller shifting oil cylinder to the gap between the main shaft and a roller shifting slide frame and horizontally moving the new roller shifting oil cylinder to the direction of the slide frame 20 centimeters; and after the new roller shifting oil cylinder completely enters the slide way, fastening a bolt and arranging a copper slide plate. By the method, the roller shifting oil cylinder of an F4-6 finishing machine can be replaced, 4 to 5 hours is required in the whole maintenance and replacement process, a crown block is used for 60 minutes, the using time of the crown block is reduced, the overhauling time is saved, the unplanned outage time produced by the fault of roller shifting cylinder is reduced, maintenance and management are facilitated, the overhauling working amount is reduced, and the labor cost is reduced.

The invention relates to a refractory material for a rotary kiln and a preparation method thereof, belonging to the technical field of refractory materials. The refractory material includes the following components in parts by weight: 20-25 parts of β-SiC, 8-15 parts of needle coke, 60-70 parts of porous periclase-magnesium-aluminum spinel ceramic fine powder, and silicon micropowder 2‑5 parts, 2‑5 parts of floating beads, 3‑5 parts of alumina fiber, 7‑10 parts of boron carbide powder, 2‑5 parts of binder. The preparation method of the refractory material for rotary kiln of the present invention is simple and reliable, and the refractory material obtained has the advantages of high compressive strength, good wear resistance, good thermal shock performance and strong medium erosion resistance, convenient construction, and greatly prolongs the durability of the rotary kiln. The service life of the material ensures the normal production of the enterprise, and at the same time minimizes the maintenance work time and reduces the maintenance cost.

The invention discloses a power system transformer auxiliary air-cooling method with induced current serving as a basis. The method comprises the steps of using data of a wind direction ball device which is arranged at the top of a transformer and induced current detectors which are arranged around the transformer as a criteria, using fans which are arranged at the periphery of the transformer asa cooling means, uniformly conducting air cooling on the transformer, and installing four temperature sensors in the centers of four vertical faces of the power transformer respectively; installing acontrol box in the direction, close to a master control building, beside the power transformer, regarding the direction with the longest contact time as the fan starting direction, setting rated poweroutput for the fans in the direction, setting 50% rated power output for the fans in other directions, and when the output time is zero, regarding the four directions all regarded as the fan startingdirection, and setting set 50% rated power output for all the fans; when the temperatures of four temperature sensors are lower than 38 DEG C simultaneously, using a controller to automatically closethe fans on four arc tracks.

The invention discloses a pin remover for an R-shaped pin of an insulator. The pin recover comprises a sleeve 5; a duckbilled part 10 is arranged at the lower part of the sleeve 5; a pair of side handles 4 is oppositely fixedly connected to the upper part of the sleeve 5; an inner shaft 2 passes through the sleeve 5 and can move and rotate up and down in the sleeve; a pressing plate 1 is fixedly connected to the upper end of the inner shaft 2; the inner shaft between the pressing plate and the sleeve is sleeved with a spring 3. With the adoption of the pin remover, the working efficiency of overhauling of the insulator can be effectively improved, the operation of the R-shaped pin is greatly simplified, the overhaul time is reduced, and the working efficiency is improved. The pin remover is quick to be operated, convenient to carry, and flexible to use, can effectively improve the working efficiency and amplify the operation of workers in a tower and can also effectively overcome the actual difficulty at daily overhaul work.

A car coupler lifting device comprises two lifting rod devices and further comprises an interlocking device, a U-shaped rod and a supporting piece, the middle of the U-shaped rod is connected with theinterlocking device through the supporting piece, and the two ends of the U-shaped rod are fixedly connected with the two lifting rod devices respectively. The U-shaped rod in the middle is connectedwith the lifting rod devices on the two sides to play a linkage role, and the interlocking device is connected with a car coupler ejector rod on a car coupler in a clamped mode. When a vehicle needsto be uncoupled, any one of the lifting rod devices on the two sides is rotated to a proper position, the lifting rod devices drive the interlocking device through the supporting piece so that the coupler ejector rod can rotate in a fan-shaped arc mode, and then the uncoupling action can be completed. According to the coupler lifting device, linkage can be achieved only by conducting operation onone side, and potential safety hazards caused when two machine heads of a decoupling hook operator operate in a penetrating and inserting mode are completely eradicated. The device is bilaterally symmetrical, simple in structure and rapid to install.

The invention discloses a modular combined type integrated cooker, and belongs to the technical field of integrated cookers. The modular combined type integrated cooker comprises a case and a cooking bench, the cooking bench is arranged over the case, pot racks are symmetrically arranged at the upper end of the cooking bench front and back, a steam box is fixedly installed at the position, close to the left side, of the upper end in the case, a disinfection box is fixedly installed below the steam box, and a drawing device is arranged under the disinfection box. A maintenance device is arranged on the rear side of the drawing device, a winding device is arranged on the right side of the maintenance device, the drawing device comprises a drawer side plate, a bottom plate and first sliding blocks, the bottom plate is fixedly installed at the lower end of the right side face of the drawer side plate, and a worm gear case is fixedly installed at the position, close to the right side, of the upper end of the drawer side plate. The two sets of first sliding blocks are fixedly mounted on the upper side surface of the bottom plate. When a wind wheel and a motor in a volute are maintained, an upper head and the cooking bench of the integrated cooker do not need to be detached, or the whole integrated cooker does not need to be pulled out of a kitchen cabinet to be detached for maintenance, and the effect of conveniently maintaining the integrated cooker is achieved.

The invention discloses a spraying component of a large-scale three-dimensional transfer printing machine. The spraying component comprises a transmission device and a nozzle device, wherein the transmission device can horizontally move in a belt transmission manner; the nozzle device is arranged on a shell of the transmission device; and the nozzle device is provided with a nozzle which can horizontally move in a reciprocating manner, so that the spraying component of the large-scale three-dimensional transfer printing machine can be used for uniformly spraying an activating agent; and through design of a single nozzle, the spraying component is conveniently cleaned, and is extremely practical and convenient.

The invention provides a metal sealing device of a trolley of an annular cooler. The metal sealing device is mounted between a rotary frame beam and the trolley and comprises a fixing piece, a metal plate, elastic stretchable devices, wherein the upper end of the fixing piece is fixed on a bottom surface of the rotary frame beam, the upper portion of the metal plate and the lower portion of the fixing piece are overlapped and can vertically move relative to the fixing piece, two lateral transverse ends of the metal plate extends out relative to the fixing piece, the elastic stretchable devices are arranged among the two lateral transverse ends of the metal plates and the bottom surface of the rotary frame beam, each elastic stretchable device comprises an elastic component which enables the lower portion of the metal plate to always press the surface of the trolley tightly.

The present invention discloses a novel line temperature transmission device used for leading the current of the secondary winding of a CT (current transformer) to a heating resistor loop in line temperature measurement of the power transformer. The device includes a current acquisition module for acquiring the current of the secondary winding of the CT, a control circuit and an alternating-current constant current source circuit for leading output current to the heating resistor loop; the control circuit comprises a central processing unit and a liquid crystal display module; the alternating-current constant current source circuit is connected with the central processing unit through a serial communication circuit; the current acquisition module is connected with the central processing unit; and the liquid crystal display module is connected with the central processing unit. According to the novel line temperature transmission device of the invention, a current acquisition sensor is adopted to acquire the current of the secondary winding; the central processing unit processes acquired current data and communicates with the alternating-current constant current source circuit so as to control the magnitude of output current, so that the output current of the alternating-current constant current source circuit and acquired input current can be synchronous and consistent, and therefore, the risk of the open circuiting of the secondary winding of the CT can be lowered, and the stability of a transformer system can be improved.

The invention discloses a movable maintenance operation platform for a suspension type monorail train. The movable maintenance operation platform for the suspension type monorail train comprises a support structure, fixed platforms, movable platforms, lifting devices and the like. The two fixed platforms are arranged on the inner side of a vertical support of the support structure; the movable platforms are correspondingly arranged on the fixed platforms respectively; the tops of the movable platforms can transversely slide along the support structure; rail beams are arranged on the top facesof the movable platforms; middle horizontal supports are further symmetrically arranged on the support structure; the lifting devices can longitudinally slide along the middle horizontal supports; andcorresponding telescopic and lifting units are transversely arranged on the lifting devices, so that a bogie and a vehicle can be lifted together so as to be disengaged from the track beams. The invention further discloses an operation method of the movable maintenance operation platform. The movable maintenance operation platform for the suspension type monorail train provided by the invention can be matched with disassembling, assembling, transferring, hoisting and the like in the suspension type monorail overhauling technological process, so that the overall overhauling efficiency is improved, the requirements for three-month overhauling, wheel replacement overhauling, key overhauling and comprehensive overhauling can be met, and the applicability is high.

An object of the present invention is to measure the marking interval during inspection without placing a burden on maintenance personnel, and to determine the deterioration state based on the marking interval. An elevator wire rope inspection system according to an embodiment of the present invention includes a sensor (21), an encoder (22), and a computing device (23). A sensor (21) detects a plurality of marks provided at regular intervals along the length direction of a main steel cable (10) to be inspected. The encoder (22) generates a pulse signal synchronously with the movement of the main cable (10). The calculation device (23) calculates the interval of each mark according to the detection time of each mark obtained by the sensor (21) and the count value of the pulse signal output from the encoder (22), and determines the main steel cable according to the calculation result. (10) Deterioration state.