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276results about How to "Speed up work" patented technology

Method for calculating relative permeability coefficient of unsaturated soil

The invention discloses a method for calculating the relative permeability coefficient of unsaturated soil. The method comprises the steps that a certain initial void ratio e0ref is selected as a reference state according a soil sample of a certain type, van Genuchten SWCC equation parameters a1 and b1 are calibrated through an SWCC in the reference state; a parameter zeta is calibrated through an SWCC when the initial void ratio of the soil sample of the type is e0*; based on the calibrated parameters a1, b1 and zeta, the SWCC of the soil sample of the type under the condition of any initial void ratio e0 can be predicted; based on the SWCC under the condition of the initial void ratio e0, corresponding van Genuchten SWCC equation parameters a2 and b2 are obtained through secondary fitting and substituted into a relational expression for calculation, and therefore the relative permeability coefficient kr of the corresponding unsaturated soil can be obtained. By the adoption of the technical scheme, the difficulty in directly measuring the permeability coefficient in an experiment can be effectively overcome, so that consumption of manpower, material resources and time is reduced, meanwhile the workload in practical engineering is reduced to a great extent, and the job schedule is effectively improved.
Owner:BEIJING JIAOTONG UNIV

Wheel speed simulating method and system used in automobile dynamics control simulation system

The invention relates to a wheel speed simulating method and system used in an automobile dynamics control simulation system. The method comprises the following steps that (1) a wheel speed simulating system is set; (2) vehicle type selection and working condition setting are carried out, and the independent wheel speed of four wheels is sent to a whole vehicle simulation CAN bus; (3) a communication module receives a wheel speed data signal, the wheel speed data signal is transmitted to a square wave generating module, the square wave generating module generates PWM square wave signals, and the PWM square wave signals are sent to a gear ring motor driver; (4) the gear ring motor driver drives a gear ring motor; (5) a 15-bit absolute value encoder feeds back the wheel speed information of the gear ring motor to the gear ring motor driver; (6) the step (7) is executed if the preset wheel speed is achieved, and otherwise the step (5) is executed; (7) the wheel speed of a gear ring is measured, the step (8) is executed if the preset wheel speed is achieved, and otherwise a diagnosis module sends a diagnosis message, and the step (3) is executed after secondary feedback control is achieved;; (8) a Hall wheel speed sensor sends the wheel speed signal to a whole control unit (ECU).
Owner:TSINGHUA UNIV

Composite board automatic gluing device

The invention relates to a composite board automatic gluing device. The device comprises a bottom plate, a mounting rack, a stacking device and a gluing device; the mounting rack is installed on the bottom plate, sliding chutes are formed in the mounting rack, the gluing device is installed in the sliding chutes, and the stacking device is installed at the lower end of the gluing device; the stacking device is installed on the bottom plate, and the stacking device comprises a linear guide rail, a limiting mechanism and a supporting mechanism; the gluing device comprises a glue discharging mechanism and a leveling mechanism; and the leveling mechanism comprises sliding blocks, sliding rods, a transverse plate, a telescopic leveling frame, a fixed supporting plate, an adjusting length air cylinder, a connecting ring and a driving branched chain. According to the composite board automatic gluing device, the problems that board codes are not even, gluing are non-uniform, glue is easy to waste, the adjustability is poor and the like in an existing composite board gluing process are solved; and the function of automatically gluing the composite board can be achieved, and the device has the advantages of being neat in stacking, uniform in gluing, not easy to waste glue, and flexible to adjust.
Owner:江苏林德曼新材料科技有限公司

Cutting machine for metal corrugated pipes

The invention discloses a cutting machine for metal corrugated pipes. The cutting machine for the metal corrugated pipes comprises a bearing table, a cutting table and a cutting machine base. The top of the bearing table is fixedly connected with a jacking mechanism. The top of the cutting table is provided with a discharging groove and a cutting groove sequentially from left to right. The position, corresponding to the discharging groove, of the top of the cutting table is fixedly connected with a feeding shell. A discharging channel is formed in the bottom of the side, close to the cutting groove, of the feeding shell. The top of the cutting machine base is fixedly connected with a cutting machine body. A cutting wheel is arranged in the position, corresponding to the discharging groove, of the cutting machine body. Through cooperation of the jacking mechanism, the discharging groove, the cutting groove, the feeding shell and the discharging channel, an automatic feeding effect is achieved, manually placing the corrugated pipes to an operating floor is not needed, both time and labor are saved, normal operation is not affected, the working efficiency is improved, the working progress is accelerated, productivity is improved, and accordingly, economic benefits are obtained to a certain extent.
Owner:何朋飞

Construction method for repairing bridge crack

The invention relates to the technical field of bridge repairing, in particular to a construction method for repairing a bridge crack. The construction method for repairing the bridge crack includes the following steps that crack cleaning treatment is performed, the two sides of the crack are wiped and cleaned completely with an organic solution; the crack is closed with crack sealing glue, and agrouting port and an exhausting port are reserved in the two ends of the crack; a chassis of a grouting nozzle adheres to the crack with the crack sealing glue, so that a grout outlet of the groutingnozzle is aligned with the grouting port of the crack; after curing of the crack sealing glue, the crack sealing glue is coated with a layer of soapy water for sealing inspection; a proper amount of glue A and glue B are correspondingly injected into a reaction tank for sufficient mixing, then the two groups of crack glue after being mixed are injected into the grouting port through a third pipeline and the grouting nozzle, and after grout outflow in the exhausting port, pressurizing stops; and the grouting nozzle is disassembled and sealing treatment is performed. The construction method forrepairing the bridge crack is provided, the crack can be easily filled with a repairing material, the crack is repaired in a better condition, and the repairing efficiency of the crack is greatly improved.
Owner:梁惠文

High-precision drilling device for hardware machining

The invention discloses a high-precision drilling device for hardware machining and belongs to the technical field of drilling devices. The high-precision drilling device for hardware machining comprises a base, the left side of the top of the base is movably provided with a transverse workbench, and the top of the transverse workbench is movably provided with a longitudinal workbench. The left side of the bottom of a transverse plate is provided with a rotary base, and the bottom of the rotary base is provided with a drilling motor. The displacement distances of the transverse workbench and the longitudinal workbench are determined precisely through scale lines, the size of the included angle between an inclined plate and a lower connection plate can be adjusted through match between a threaded rod and a threaded pipe, and therefore the inclined angle of drilling is changed; the inclined direction of the drilling motor can be changed by rotating the lower connection plate, and a workpiece moves in the direction of inclined drilling; racks are meshed with tooth slots, and accident movement of the transverse workbench and the longitudinal workbench is avoided; and accident rotationof the lower connection plate can be prevented through match between clamping balls and clamping slots, the work intensity of workers is relieved, and work efficiency is improved.
Owner:GAOYOU LIBO MACHINE TOOL ACCESSORIES FACTORY

Adjustable sliding-rail type suspension girder operating platform for high-rise building

The invention discloses an adjustable sliding-rail type suspension girder operating platform for a high-rise building. The operating platform comprises a basketry body and a hanger structure. The hanger structure comprises a telescopic beam, front clamping arms and rear clamping arms, wherein the front clamping arms and the rear clamping arms are all perpendicularly and fixedly connected with the telescopic beam. The telescopic beam comprises a front beam body and a rear beam body which are partially and mutually sleeved, and the front beam body and the rear beam body can adjust the working length of the telescopic beam through a telescopic device. The side, close to the front clamping arms, of the basketry body is provided with basketry sliding sleeves, the basketry sliding sleeves are connected with the front clamping arms in a sleeving mode, and the height of the basketry body can be adjusted through a height adjusting device. According to the adjustable sliding-rail type suspension girder operating platform for the high-rise building, the relative planar distances of the front clamping arms and the rear clamping arms can be adjusted through the front beam body and the rear beam body so that the working length of the telescopic beam can be adaptable to the width of the cross section of a suspension girder, and a hanger of the operating platform can be adaptable to the suspension girders with different specifications and sizes. In addition, adjustment of the working height of the basketry body is achieved through the height adjusting device between the front clamping arms and the basketry sliding sleeves, and thus the requirement that the operating platform is adaptable to fastening of the suspension girders under different working conditions is met.
Owner:CHINA CONSTR STEEL STRUCTURE CORP LTD

Electric power threading pipe mounting bracket capable of being adjusted according to different pipelines

The invention discloses an electric power threading pipe mounting bracket capable of being adjusted according to different pipelines. The electric power threading pipe mounting bracket comprises a base, rotating shafts and fixing pieces; a first fixing frame is fixedly connected to the upper portion of the base, and a first connecting plate is arranged in the first fixing frame; a second clampingblock is arranged in the second connecting plate, and the second clamping block is connected with the second connecting plate through a second elastic spring; and the connecting block is connected with the first fixing frame through a clamping groove, and the clamping groove is formed in the first fixing frame. According to the electric power threading pipe mounting bracket capable of being adjusted according to different pipelines, the connecting blocks are arranged on the left side and the right side of the second fixing frame correspondingly, and the connecting blocks and the first fixing frame form a detachable structure through the clamping grooves, so that when the use space of the first fixing frame is insufficient, the second fixing frame and the first fixing frame can be assembled, the practicability of the mounting bracket is improved, and convenience is brought to operation of workers.
Owner:STATE GRID CORP OF CHINA +1

Energy-saving pulse dust collection chamber

The invention discloses an energy-saving pulse dust collection chamber which comprises a dust collection box, wherein the inner cavity of the dust collection box is partitioned into a dust collectioncavity and a purification cavity through a partition plate; a dust hopper is mounted below the dust collection cavity; the dust collection cavity and the purification cavity are respectively connectedwith a gas inlet pipe and an exhaust pipe; a plurality of mounting cylinders of which lower ends are opened are uniformly inserted into the partition plate; and a pulse main tube is horizontally arranged on the purification cavity. Due to cooperation of a separating mechanism, a control mechanism, a ventilation mechanism and filtering mechanisms, filtering mechanisms of which the dust adsorptioncapacities are greater than the maximum adsorption amount of a filtering bag, of a plurality of filtering mechanisms, can be independently cleaned through manual operation, so that both the energy canbe saved, and secondary pollution caused by dust in the dust collection cavity can be avoided; in addition, cleaning operation on the filtering bag can be completed in normal dust collection of the machine, machine halt is not needed, and the working progress can be effectively accelerated; and through an electrostatic mechanism, adsorption of the filtering bag upon dust can be accelerated, and the dust collection efficiency of the filtering bag can be improved.
Owner:南陵县红宝种业有限公司

Geological profile measuring device

The invention discloses a geological profile measuring device and belongs to the geological measuring device field. The geological profile measuring device is equipped with a compass used for measuring an azimuth and a variable-resistance-type angle-distance measuring meter used for measuring a gradient angle and distance. The variable-resistance-type angle-distance measuring meter comprises a spiral resistor and an arc-shaped resistor which are arranged to be concentric. The arc-shaped resistor is in rotatably assembled on a measuring rod through an insulating swing rod with an inner side being connected with a mandrel vertically and is equipped with a heavy bob in a suspension manner. A conductive slip ring sleeves the arc-shaped resistor in a sliding manner. The outer end of the spiral resistor goes through the conductive slip ring. Displayers are connected between the conductive slip ring and the inner end of the spiral resistor and between the conductive slip ring and one end of the arc-shaped resistor through signal collection processors used for receiving current signals caused by resistance change. The geological profile measuring device is simple in structure and is convenient to use, the measuring precision is raised, the working progress is accelerated, and the working strength of measurement personnel is lowered.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING) +1

Oil pipe anti-overflow tool for direct flushing and indirect flushing

InactiveCN104453753AExtend the full timeNo spillageFlushingEngineeringWork schedule
The invention discloses an oil pipe anti-overflow tool for direct flushing and indirect flushing, and relates to the field of industrial machinery. The oil pipe anti-overflow tool comprises an upper connector, a lower connector and an anti-overflow body, wherein the upper connector is connected with a righting rod which is connected with a reverse valve, the reverse valve is connected with a reverse valve base, a valve spring is arranged on the correcting rod and connected with the reverse valve, one end of the reverse valve base is connected with a forward spline type circumferential through hole, and the other end of the reverse valve base is connected with a reverse valve through hole. Normally-opened through holes are formed in the anti-overflow body. The lower end of the anti-overflow body is connected with a piston body which is connected with piston body springs. Two flow-limiting aperture passageways are designed and arranged, and therefore it can be ensured that a tubular column can be smoothly descended under the condition that no spraying or spoiling happens to an oil pipe, circulating direct and indirect flushing can be sufficiently conducted multiple times, the flow limiting effect is not changed when the tubular column is descended, and therefore the work schedule is effectively accelerated. The oil pipe anti-overflow tool is simple and ingenious in design and convenient to apply and popularize.
Owner:SHANGHAI QISHAN INSTR TECH

Material hoister for constructional engineering

The invention relates to a material hoister for constructional engineering. The material hoister for constructional engineering relates to the technical field of constructional engineering equipment, and comprises a rack, a top beam, a first driving wheel, a second driving wheel, a steel wire rope, a first hanging basket, a positive and reverse rotation motor and a second hanging basket, wherein the top beam is arranged on the top part of the rack through fixed bolts; the first driving wheel and the second driving wheel are sequentially embedded in the top beam; the second driving wheel is connected with a rotary shaft of the positive and reverse rotation motor; the positive and reverse rotation motor is arranged on the top beam through fixed bolts; one end of the steel wire rope is connected with the first hanging basket; the other end of the steel wire rope respectively penetrates through the first driving wheel and the second driving wheel so as to be connected with the second hanging basket. The material hoister for constructional engineering is simple in structure, reasonable in design and convenient to be operated, and the collision during the hoisting process can be effectively avoided, so the potential safety hazard is eliminated, and the working efficiency can also be improved, and the working progress is accelerated.
Owner:JINLING INST OF TECH

Building paint spraying device with purification function

The invention discloses a building paint spraying device with a purification function, and belongs to the technical field of building paint. The device comprises a stirring box, universal wheels, a first motor and a small air compressor; supporting columns are fixedly connected to four corners of the bottom of the stirring box; four sets of the universal wheels are arranged; the four sets of universal wheels are arranged at the bottoms of the four sets of supporting columns correspondingly. The bottom of the stirring box is fixedly connected with a discharge pipe communicated with an inner cavity of the stirring box; a first control valve is mounted on the discharge pipe; a stirring shaft assembly is horizontally, transversely and rotationally connected to the lower middle portion of the inner cavity of the stirring box, and the first motor is fixedly arranged on the left side wall of the stirring box. Through mechanical stirring and air injection stirring of the stirring shaft assembly, the stirring efficiency of paint can be improved, and the stirring fineness of the paint can also be improved; and through an air purification assembly, indoor air can be effectively purified, andthe situation that the health of a worker is affected due to the fact that the worker inhales a large amount of dust and harmful gas is avoided.
Owner:福清市景士兰涂料有限公司

Traditional Chinese medicinal material cleaning device with anti-damage function

The invention belongs to the technical field of traditional Chinese medicinal materials, and discloses a traditional Chinese medicinal material cleaning device with an anti-damage function. The traditional Chinese medicinal material cleaning device comprises a cleaning box, a box door is hinged above the front surface of the cleaning box through hinges, and a water inlet pipe communicated with theinterior of the cleaning box is inserted into the left side of the cleaning box in a penetrating manner. When the scheme is used, traditional Chinese medicinal materials needing to be cleaned are firstly placed in a cleaning net barrel, then the cleaning net barrel is connected with a connecting net cover through a connecting piece, then the cleaning net barrel is driven to descend through a telescopic mechanism, and meanwhile cleaning water is introduced into the cleaning box through the water inlet pipe, so that the cleaning net barrel is submerged in the cleaning water, and the medicinal materials are cleaned; and meanwhile, the telescopic mechanism and the cleaning net barrel are driven by a transmission assembly, so that the water flow speed is increased, the cleaning efficiency is improved, stirring of a stirring shaft is not needed, the phenomenon that the traditional Chinese medicinal materials are damaged due to stirring of the stirring shaft is prevented, rigid contact between the medicinal materials and the cleaning net barrel can be reduced through a net pad, and the traditional Chinese medicinal materials are effectively prevented from being damaged.
Owner:杨猛
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