164 results about "Maintenance engineering" patented technology

According to the present invention, the most challenging issues in this work have been to find systematic ways of enabling maintenance engineers to decide an adequate time for the replacement of vacuum pumps on the basis of their current performance assessment result. Further, the comparison of the currently evaluated diagnostics analysis results and the initial (or reference) data set is shown to enable maintenance engineers to decide the replacement of the considered vacuum pump according to the evaluated pump performance indicators. This quantitative diagnostic analysis result is expected not only to enable maintenance engineers to decide an adequate time for the replacement of vacuum pumps on the basis of their current performance assessment results but also to improve the reliability and confidence of the predictive maintenance of low vacuum pumps.

According to the present invention, the most challenging issues in this work have been to find systematic ways of enabling maintenance engineers to decide an adequate time for the replacement of vacuum pumps on the basis of their current performance assessment result. Further, the comparison of the currently evaluated diagnostics analysis results and the initial (or reference) data set is shown to enable maintenance engineers to decide the replacement of the considered vacuum pump according to the evaluated pump performance indicators. This quantitative diagnostic analysis result is expected not only to enable maintenance engineers to decide an adequate time for the replacement of vacuum pumps on the basis of their current performance assessment results but also to improve the reliability and confidence of the predictive maintenance of low vacuum pumps.

A computer-implemented maintenance / repair workscope development tool uses one or more sources of gas turbine engine / fleet operational condition data, gas turbine engine / fleet historical data and gas turbine engine / fleet specific information, including other historical, statistical and maintenance / engineering records data to develop a recommended maintenance / repair workscope. A method, system and program product are described for producing a recommended maintenance / repair workscope for individual machines and / or machines on a fleet level. Relevant domain knowledge / information models along with appropriate application rules defining maintenance / repair requirements are predetermined and maintained in a network accessible database / repository. A rules / reasoner engine is used to develop logical inferences and make intelligent workscope choices based upon user input situational data, operational condition data stored in data / information databases and the predetermined knowledge / information models and rules. A disclosed non-limiting example workscope prediction / recommendation tool develops quantitative recommendations for the type of work needed to be performed to an individual gas turbine engine or an entire fleet.

The invention discloses a method for determining the setting size of coal columns in fully mechanized caving coal mine gob-side entrydriving. Means such as indoor test, theoretical calculation, numerical simulation and field test are adopted; a strong constraining and reinforcing scheme for coal columns of 'anchor pole + metal mesh + concrete injection+ reinforcement of coal columns with hollow grouting anchor cable' is provided; the reasonable setting width of coal columns is determined and the long-term stability of coal columns and mining roadways is guaranteed. By means of the method, on one hand, the tunnel later maintenance engineering work load and the maintenance cost are greatly reduced, and on the other hand, the safe and efficient recovery of the working faces is guaranteed. Therefore, the provided method for determining setting size of coal columns in fully mechanized caving coal mine gob-side entrydriving is of great theoretical significance and has engineering practice value.

The invention discloses a hanger articulated bridge inspection vehicle, belonging to bridge maintenance and construction equipment. The hanger articulated bridge inspection vehicle comprises a frame chassis (21), a suspension arm is a C-type hanger (25), the frame chassis (21) is articulated with the lower end of a pillar (23) by a longitudinal axis hinge (22) and a longitudinal axis, the upper end of the pillar (23) is articulated with the protruded end of an upper cross beam of the C-type hanger (25) by a transverse axis hinge (24) and a transverse axis, or the frame chassis (21) is articulated with the protruded end of the upper cross beam of the C-type hanger (25) by the longitudinal axis hinge (22) and the longitudinal axis, and the protruded end of a lower cross beam of the C-type hanger (25) is at least provided with a fixed point of a lifting rope (26) or a lifting rope extending-retracting device. According to the invention, the pulling force of the lifting rope (26) on an inspection platform (5) can be directly transferred to a bridge floor (2), therefore, the vehicle disclosed by the invention is small in overturning moment, light in structure and convenient to assemble and use, and can be erected on sidewalks on both sides of a bridge, so that the vehicle is especially suitable to be applied to the bottom detection and maintenance engineering of heavy traffic bridges.

The invention relates to a traction and maintenance engineering vehicle of a maglev train, which is important necessary equipment for the maintenance of a maglev line. Battery is used as power sourceand AC motor is controlled by inverter system to drive running system. 3-axle power bogies and guide device are used to ensure that wheels of the engineering truck run on the non-inductive plate partof the F-type rail surface, so as to ensure the safety of the engineering truck overhaul operation and the traction rescue maglev train; And reliably connecting or releasing the connecting state withthe medium-low speed maglev train by the traction connecting device; And through the electrical control system to accurately control the driving, braking, traction and other operations. The engineering vehicle is suitable for the operation of maglev depot, comprehensive base and line, undertaking maglev train traction and rescue, regular patrol inspection of track / contact rail, spare parts repairand replacement, auxiliary staff and material transportation, as well as dust and snow removal under special weather conditions.

The invention relates to an integral casting-molding method for a heat-storing type heating-furnace burner, which comprises the following steps of: firstly manufacturing cross reinforcing ribs and a burner-spout mould, then arranging a burner body and a heat-storing box, installing the cross reinforcing ribs and the burner-spout mould at an outlet of the heat-storing box, arranging a template forsupporting an inner wall surface on the inner surface of a furnace wall, carrying out integral casting for a wall-body space in the template and the burner-spout mould through a slurry material, dismantling the template for supporting the inner wall surface and the burner-spout mould after the slurry material is solidified and the requirements of an intensity standard are met, and molding a burner spout to form the integral burner together with the burner body and the heat-storing box fixed on the furnace wall of a heating furnace. Through the integral casting-molding method for the heat-storing type heating-furnace burner, the defects of long period, complex construction and high cost of a traditional process are overcome, the service life of the burner on the heating furnace is effectively prolonged, the construction time and the maintenance-engineering quantity are shortened, and the integral casting-molding method is a maintenance-construction method which has the advantages that the time is saved, the labor is saved, the cost is effectively lowered, and the service lives of the heating furnace and the burner are prolonged.

The invention discloses a method for accurately measuring the elastic modulus of tunnel rock in a cold region after repeated freeze-thaw damage. The method comprises the steps of: A, micro-crack propagation half-length 1N=Delta 1N+1(N-1) (32); B, the corresponding micro-crack density parameter beta is expressed as the formula(33) shown in the specification; C, the number of propagated and activated micro-cracks in the unit volume is as the formula(34) shown in the specification; D, the effective elastic modulus of the rock is expressed as the formula(30) shown in the specification; and E, substituting the formulas (32) to (34) into the formula (30), and solving the EN to obtain the equivalent elastic modulus of tunnel surrounding rock after N times of freeze-thaw. According to the method for accurately measuring the elastic modulus of tunnel rock in a cold region after repeated freeze-thaw damage, the method has the advantages of being accurate and fast; the foundation is provided forthe calculation of the frost heaving force of the surrounding rock under the repeated freeze-thaw damage condition; and a practical guide is provided for the direction and the method of the construction operation of the rock tunnel maintenance engineering.

A portable temporary righting device for inclination of a power transmission line pole and tower comprises a rack, a line collecting reel is installed on one side of the rack, a rope is wound around the line collecting reel, a line clamping groove is formed in one end of the line collecting reel, and a ratchet wheel mechanism is arranged at the other end of the line collecting reel, wherein the ratchet wheel mechanism and the line collecting reel coaxially rotate. Pawls and reversing deflector rods are arranged on the rack. A guiding pulley is installed on the other side of the rack, a conical shaft and big gears are installed on the rack and rotate coaxially, and the big gears and a gear set are assembled in a meshed mode. A balance weight disc connected with the gear set is installed on the rack and connected with a pedal through a connecting rod, and the balance weight disc, the connecting rod and the pedal form a crank and rocker mechanism. The portable temporary righting device can temporarily right the pole and tower and prepare time for permanent reinforcement of the pole and tower; operation can be achieved only through manpower, and the portable temporary righting device is applied to finding inclination of the pole and tower in time and temporarily righting the pole and tower in time, and also suitable for pole and tower emergency maintenance engineering in remote mountain regions or pole and tower emergency maintenance engineering where the pole and tower in inclination can not be temporarily righted unless depending on labor.

The invention relates to a construction method of external scaffold in box-type bridge maintenance engineering, particularly a construction method of externally-suspended scaffold in maintenance engineering of box-type bridge girder. The invention is characterized in that the method comprises the following steps: 1) building a full hall scaffold, as a hoisting rooting platform, on a pier repair platform of the original bridge or in a smaller space near the pier, and building a first row of in-box horizontal steel tubes (8), vertical leaf steel cables (9), vertical right steel cables (10), low boom columns (13), left vertical steel tubes (12) and right vertical steel tubes (14) on the hoisting rooting platform; 2) cantilevering second and third rows by the same method as the first tow until the maintenance section is covered completely; 3) building trusses; 7) paving gang boards on a truss top chord (15), a left web maintenance platform (22) and a right web maintenance platform (23) respectively, and suspending a safety net. The invention has the advantages of no limitation of space under bridge and short construction cycle.

The invention relates to a water-based anticorrosive coating with rust and a preparation method thereof. The water-based anticorrosive coating with the rust comprises the raw materials: 22-35 parts of de-ionized water, 35-45 parts of a fluorine-containing emulsion with the rust, 1-3 parts of an additive, 8-13 parts of an antirust pigment, 1-3 parts of color paste, 5-10 parts of filler, 2-8 parts of a transforming agent or a rust stabilizing agent, and 1.5-3.5 parts of an anti-settling agent, wherein the fluorine-containing emulsion with the rust is a coreshell emulsion prepared from a monomer, an emulsifying agent and an initiating agent; the emulsifying agent comprises the components of a phosphate emulsifying agent and a sodium sulfonate emulsifying agent; a shell part comprises the transforming agent or the rust stabilizing agent. The preparation method comprises the following steps of: stirring part of the de-ionized water, the additive, the transforming agent or the rust stabilizing agent, the anti-settling agent, the antirust pigment and the filler, and grinding the mixture into slurry; adding the fluorine-containing emulsion with the rust and the like while stirring to prepare the anticorrosive coating with the rust. The coating is nontoxic, odorless, non-combustible, non-explosive, non-volatile and low in VOC (volatile organic compounds), can be used for replacing a derusting and descaling process; a protective primer with a high adhesion force is formed; a conventional derusting process can be replaced; the coating can be directly applied to a steel structure or maintenance engineering of mechanical equipment.

The invention provides modified asphalt. The modified asphalt comprises base asphalt, a modifying agent, a lignin stabilizing agent, maleic acid mono-lauryl La, rubber powder and a mineral filler, wherein the modifying agent is obtained by taking a styrene-butadiene-methyl methacrylate polymer as a base material and the lignin stabilizing agent is extracted by adopting an alcoholic solvent with high boiling point; and the modifying agent is prepared through the following method: under the action of a thermal polymerization initiator, the styrene-butadiene-methyl methacrylate polymer and reactive monomers are polymerized in a solvent, and then, the modifying agent is obtained. The modified asphalt has the advantages of high softening point, high extension degree, excellent elastic recovery, long storage time and high stability, when the modified asphalt is used in the process of road construction, the maintenance engineering for expressways of our country can be improved, the service lives of the expressways are prolonged, and the road level of service is improved.

The invention provides a 3D (three-dimensional) model-based maintenance training system for equipment such as engineering machinery, construction machinery, mining machinery and agricultural machinery, wherein the maintenance training system can be used for displaying internal structures and processes of complete machines and parts, installing and maintaining the machines. The maintenance training system comprises a 3D model of the equipment, a display module for displaying the 3D model state, a man-machine interactive module used for receiving user operation instructions, a model control module used for controlling the connection relations and states of all parts of the 3D model according to the user operation instructions, a maintenance rule module used for generating and maintaining maintenance rules of the engineering equipment, and an action evaluation module used for recording and evaluating the user operation instructions. According to the maintenance training system provided by the invention, the maintenance process of the engineering equipment is demonstrated by using the 3D model and Flash technology animation, so a maintenance engineer or a user can be trained, maintenance processes of the maintenance engineer or the user can be guided, and simulation can be provided to the maintenance engineer or the user, so the maintenance engineer or the user can quickly and skillfully master maintenance methods and steps. The system can be further operated on a cloud platform.

The invention discloses a novel hollow composite slab, which comprises a flat steel plate, a plurality of holed steel plates, and a plurality of steel pipes, the holed steel plates are parallel and are vertically welded on one plane of the flat steel plate, the plurality of steel pipes respectively pass through corresponding round holes of the holed steel plate and are welded with the round holes, the flat steel plate, the plurality of holed steel plate, and the plurality of steel pipes combine into a hollow slab support, and the hollow slab support is poured with light aggregate concrete to finally form the steel plate-light aggregate concrete hollow composite slab. The novel hollow composite slab of the invention has light weight, convenient construction, higher strength and rigidity, and better bearing performance, can be widely applied to the bridge slabs of new bridges and house buildings, the basement top board or room floor, and can be also applied to the bridge slab replace and maintenance engineering.

The invention discloses a modified regenerant and a preparation method and application thereof. The regenerant is prepared from vegetable pitch, a modifier, an emulgator and an anti-aging agent; the preparation method comprises the steps that the vegetable pitch is heated and stirred, the modifier is added, stirred and cooled, the emulgator and the anti-aging agent are added for continuous stirring, and the modified regenerant is obtained. The modified regenerant and the preparation method and application thereof have the advantages that the modified regenerant can effectively promote pavement performance of a thermal regeneration modified pitch mixture, aged SBS modified pitch is recovered, and the modified regenerant is economical, environmentally friendly and free of pollution; meanwhile, the preparation method is simple, and the production cost is greatly reduced; in addition, the prepared modified regenerant can be used for maintenance engineering of the surface layer of an expressway, and important significance in popularization of a thermal regeneration technology is achieved.

The invention relates to a metal roof ridge waterproofing system comprising a profiling roof panel, a roof ridge flashing plate and a roof ridge water baffle. The roof ridge water baffle comprises a plug plate, a top end surface, folding edges, a bottom end surface, two lateral end surfaces and ear-shaped short edges. The metal roof ridge waterproofing system is formed by fixing the ear-shaped short edges at both sides of the roof ridge water baffle on the engaged vertical edge of the profiling roof panel through sewing nails and then connecting the roof ridge flashing plate and the top folding edge of the roof ridge water baffle. In the invention, the connecting position of the roof ridge water baffle and the profiling roof panel is set on the wave crest of a metal roof panel, and both sides and the bottom of the metal roof panel are tightly matched with the profiling roof panel without nail holes at wave troughs so as to overcome the defect of plaster tearing and water leakage caused by temperature variance in a connecting mode of the prior art, effectively solve the problems of water leakage in the nail holes and rainwater and snow seeping and leakage at both sides of the profiling roof panel at the roof ridge because of plaster aging, reduce routine maintenance engineering, save maintenance cost and prolong the service life of steel-structure and light-steel color-plate buildings.

The invention provides a project total-factor management platform, which is applied to a mobile terminal. Mobile interconnection is combined with a conventional infrastructure project management service to enable a manager to manage and control the whole process in an electric power project on the mobile terminal in real time. The project total-factor management platform comprises a project maintenance module, a project monitoring module, a work to be finished module and a project diagnosis module. The manager can maintain project information in real time, monitor the project progress and report problems in a construction process in real time for a leader to master the construction state and solve the problems in real time. In addition, a work to be finished prompting and prewarning function is provided, so that the manager can be prompted to deal with work to be finished and timely arrange work after receiving prewarning information. The project total-factor management platform also has a project diagnosis function, the total number of projects, constructed projects, commissioned projects, delayed projects and normal projects are displayed, and the project progress of each project is displayed. By the project total-factor management platform, the project management efficiency is effectively improved.

The invention provides an aero-engine maintenance engineering management tool and aims to provide the maintenance engineering management tool which is capable of realizing resource flexible sharing and rapidly transmitting scientific management information. According to the technical scheme, a resource providing module establishes an industry chain upstream and downstream technical information transmission platform to transmit and realize technical states in time; a project capability module sets related function resources according to information provided by the resource providing module and collects repairing line construction input information so as to establish a resource database; the resource providing module, the project capability module and a maintenance capability module analyze lower sub modules influencing the resource providing module, the project capability module and the maintenance capability module, calculate the upper weight of each module in an aero-engine maintenance engineering management maturity model and respectively carry out linear programming on each sub system; and a line construction process includes starting, programming, executing and ending phases, in each phase, the resource providing module and the project capability module are utilized to respectively develop corresponding management activities, and a final result of the aero-engine maintenance engineering management is reflected by the maintenance capability module.

The invention provides a matching method for a mixture mix ratio at a regenerative microcapsule position based on torsional shear test. The invention belongs to the technical field of road maintenance engineering technology, and particularly relates to a matching method for the mixture mix ratio at the regenerative microcapsule position based on the torsional shear test. The method comprises the following steps of 1, screening over-particle-diameter particles in RAP according to the type of the selected microcapsule position; 2, determining mineral aggregate gradation and cold asphalt content of the RAP material; 3, determining the proportions of the RAP material and new aggregate according to the target gradation at the selected microcapsule position, RAP material mineral aggregate gradation and an old material mixing ratio; 4, selecting modified emulsified bitumen in an optimizing manner; 5, testing workability; 6, determining an oil amount range; 7, defining an optimal asphalt amount; and determining the mix ratio of the mixture at the regenerative microcapsule position. According to the matching method, the RAP material can be reasonably utilized at the regenerative microcapsule position for obtaining the mixture with excellent pavement performance at the regenerative microcapsule position, and therefore the matching method has high popularization value.

The invention provides a method for assisting equipment maintenance by utilizing a robot, a robot and an electronic device, and relates to the technical field of machine room management. The method comprises the following steps: obtaining equipment information of to-be-maintained equipment; authenticating the identity of a maintenance engineer according to the equipment information, and planning aroute after the authentication is successful; and moving based on the planned route so as to lead a maintenance engineer to the to-be-maintained equipment for equipment maintenance. According to themethod and the device, the maintenance engineer who successfully authenticates the identity is assisted to work, so that the identity of the maintenance engineer is guaranteed, the maintenance engineer can be guided to the to-be-maintained equipment for equipment maintenance, the workload of the maintenance engineer is reduced, and the maintenance efficiency and reliability are improved.

The invention belongs to the technical field of road maintenance engineering machinery, in particular to a road engineering pavement repair device, comprising a locomotive and a roller; The utility model also comprises a No. 1 plate, a driving unit, a cutting unit, a control unit and a No. 1 cleaning unit. The rolling roller is used for tamping the asphalt concrete mixture; The cutting unit is used for slotting the damaged part of the pavement; The No. 1 cleaning unit cleans the slotted road surface. On the one hand, the asphalt concrete mixture is completely poured into the repairing notch, and the pavement is leveled by the rolling roller, so that the driving safety of the vehicle is improved; on the other hand, the asphalt concrete mixture is completely poured into the repairing notch by the mutual cooperation of the cutting unit, the cleaning unit No. On the other hand, the dust in the pavement cutting is cleaned out of the notch to increase the bonding force between the asphalt concrete mixture and the notch, thus prolonging the service life of the highway pavement.

The invention relates to a turbine blades cleaning and mending technology in maintenance engineering, which comprises the following steps: first, placing turbine blades on sample table and exposing it in strong pulsed ionizing beam; second, radiating the blades for 1-20 times with strong pulsed ionizing beam of 5-60J / cm2 to remove oxide compound; third, radiating the blades for 1-10 times with strong pulsed ionizing beam of 1-5J / cm2 to weld microcrack; forth, rotating blades and cleaning back curved face. Compared with existing technology, the invention doesn't require high-temperature and corrosion-proof equipment and produces product with smooth surface.

A method of configuration controlling a hierarchy of data arrays is disclosed, each data array in the hierarchy having at least one version, each version of each data array in the hierarchy being associated with one version of at least one other data array in the hierarchy, each data array comprising at least one data entry, each data entry comprising a plurality of fields, the plurality of fields comprising a version field and at least one characteristic field having a characteristic, the version field indicating which version of that data array the associated characteristic fields belong to. The method comprises the steps of: (i) defining a package of data arrays comprising a predetermined version of at least two data arrays in the hierarchy and in which at least one of the data arrays is to be updated to a new version based on a previous version; and (ii) appending a new version indicator indicative of the new version to each data entry having the previous version in the at least one of the data arrays. By associating data entries with more than one version, the need to copy all the data entries within a data array to be updated is obviated. This in turn reduces the amount of additional data which needs to be created and can simplify the relationships between characteristics in different levels of the hierarchy.

The invention discloses a data processing method for engineering project progress and output value linkage, which belongs to the field of progress and output value data processing, and comprises the following steps of: matching structure nodes of a project and engineering quantity list codes corresponding to the structure nodes, and generating structure node data with codes; forming engineering quantity budget data according to the structure node data and the project budget data; determining a completed engineering quantity according to the actual progress data and the engineering quantity budget data; automatically back-stepping and calculating output value data according to the completed engineering quantity; and carrying out output value analysis, and carrying out monitoring and early warning on the cost risk of projects. The invention has the beneficial effects that the completed engineering quantity is calculated according to the actual progress data, then the output value data iscalculated through automatic back-stepping, and the output value data is generated through progress data linkage, so that the situations of false report and concealment report are avoided. the engineering quantity list and the progress data are intelligently match structure nodes, and maintenance engineering quantity is reduced.

The invention discloses a determining method for a road disease cause detection sequence. The determining method includes the following steps: (1), according to statistics of previous maintenance engineering materials, creating a disease cause occurrence probability matrix A corresponding to disease phenomena; (2), according to the statistics of the previous maintenance engineering materials, creating a probability matrix B of the disease phenomena caused by disease causes; (3), according to the statistics of the previous maintenance engineering materials, creating a normalization vector h; (4), according to spot technical detection, creating a disease phenomenon generation vector w; (5), calculating a disease cause distribution probability p; (6), according to the disease cause distribution probability, determining the disease cause detection sequence. According to the determining method, contributions of occurred disease phenomena to the road disease causes and influences of non-occurred disease phenomena on the road disease causes are comprehensively considered during determining of the disease cause distribution probability, so that calculation process is scientific and reasonable, calculation results are reliable, and detection of the disease causes can be guided scientifically.

The invention discloses a high-performance steel bridge deck paving structure, and belongs to the technical field of bridge deck pavement. The high-performance steel bridge deck paving structure comprises a paving layer, wherein the paving layer is paved on a steel bridge deck plate, the high-performance steel bridge deck paving structure is characterized in that a water-proof bonding layer is arranged between the paving layer and the steel bridge deck plate, and a plurality of cross-shaped steel bar shearing resistant components are fixed on the steel bridge deck plate. Compared with the prior art, the high-performance steel bridge deck paving structure disclosed by the invention utilizes the effective combination of reconstruction of a rough surface of a steel bridge deck, a water-proof system and the paving layer to obtain the steel bridge deck paving structure which is convenient to produce, easy to compact and good in water-proof effect, planeness, interlaminar bonding force, skid resistant property and fatigue resistant property, and the high-performance steel bridge deck paving structure can be widely used for new construction and maintenance engineering of various steel bridge decks.

The invention discloses a thermal-insulation waterproof building material which comprises the following components in parts by weight: 5-10 parts of triethavolamine, 4-8 parts of scaly sheet aluminum, 10-12 parts of talcum powder, 20-30 parts of expanded pearlite, 10-15 parts of tourmaline powder, 3-5 parts of sodium silicate, 5-10 parts of titanium dioxide and 10-15 parts of deionized water. The material provided by the invention is easy to buy and prepare, low in cost, energy-saving and environment-friendly. The finished product is convenient for construction, achieves high adhesive strength, tensile resistance and good aging resistance, and has the characteristics of no cracking at low temperature and no bulking at high temperature. The material is mainly applied to waterproof construction of outdoor and indoor pools and washrooms as well as underground engineering, waterproof and damp-proof construction of maintenance engineering, and the like. The waterproof paint provided by the invention completely abandons the defects of the conventional waterproof coiled material and the traditional waterproof paint, is easy for construction, has a good waterproof effect, higher waterproof strength and self-protection force and is easy to use.

The invention relates to an acrylic emulsion with a self-crosslinked core-shell structure, and a preparation method of the acrylic emulsion. The preparation method comprises the following steps: compounding acrylic hard monomers and acrylic soft monomers, adding functional monomers such as vinylidene, phosphate monomers and organic fluorine active monomers, adding self-crosslinked monomers to obtain the acrylic emulsion with the self-crosslinked core-shell structure by using an emulsion polymerization method under the special emulsifier combination. Through core-shell interpenetration technology and special raw material matching, the emulsion has good water resistance and corrosion resistance performances, is high in adhesion force, has excellent comprehensive performance, and can be directly coated into maintenance engineering of various steel structure members and mechanical equipment, and the like, thus having wide application prospects.

The invention belongs to the field of pipeline maintenance engineering, and particularly relates to a construction device and method for integrated construction of small-diameter pipeline maintenance.The construction device and method are mainly applied to site maintenance of small-diameter pipelines, and integrated construction of pipeline centering and pairing, groove cutting and automatic welding can be achieved. The device comprises a fixing frame, a vertical supporting frame, an extension section, a lifting section, a slip, a split beveling machine and an open type automatic welding machine. According to the construction device and method, the design that a pipeline is clamped and fixed through a V-shaped block, a replacement pipe section is fixed through a chain, and a plurality ofsections are spliced into an integral beam is adopted, so that the construction device and method can adapt to different pipe diameters and pipe span widths, and the problems that an existing productcannot be suitable for site maintenance of small-diameter pipelines, construction components are independent, and the construction precision and efficiency are low are solved. By means of the advantages of the existing product, function integration of the existing product is achieved, the structure is novel and compact, the engineering efficiency is improved, and the practical value of the construction device is achieved.