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209results about How to "Damage reduction" patented technology

Constant tension control device of hydraulic winch

The invention discloses a constant tension control device of a hydraulic winch, which is particularly applied to constant tension control. An electro-hydraulic control system comprises an oil tank, a power pump group, an electromagnetic reversing valve, hydraulic locks, pressure sensors, a motor safety valve, a hydraulic motor, a winch, a cable arranger, a tension sensor, a load, a programmable logic controller (PLC), a one-way throttling valve, an electric-hydraulic proportional overflow valve and a cooling valve, wherein the power pump group is connected with an oil inlet of the electromagnetic reversing valve; oil outlets a and b of the electromagnetic reversing valve are connected with the hydraulic locks and the one-way throttling valve, respectively; an oil return inlet of the electromagnetic reversing valve is connected with an oil inlet of the electric-hydraulic proportional overflow valve; an oil outlet of the electric-hydraulic proportional overflow valve is connected with the cooling valve; an oil return inlet of the cooling valve is connected with the oil tank; the two symmetric hydraulic locks on oil paths corresponding to the two oil outlets of the electromagnetic reversing valve are connected with openings A and B of the hydraulic motor, respectively; the motor safety valve is arranged in parallel between two oil cavity openings A and B of the hydraulic motor. The constant tension control device of the hydraulic winch has functions for setting and measuring the tension state of a cable and making the tension state constant under complicated sea conditions, and is high in response speed and high in anti-interference performance.
Owner:SHANGHAI OCEAN UNIV

Conveying device with rotation function for paperboard double-sided printer and conveying method

The invention discloses a conveying device with a rotation function for a paperboard double-sided printer and a conveying method. The device comprises a base and a double-sided printer body, a bottomcleaning member is arranged on the left side of the outer wall of the front side of a panel through a supporting frame, a rotation mechanism which cooperates with a conveying belt is arranged in the center of the top of the base, and a top cleaning member is arranged on the part, close to the right side, between the two limiting plates. According to the device, a rotary disc is driven through a connecting motor, two groups of moving plates are pulled by two groups of pull rods to perform reciprocating movement from front to back to rub one side of a paperboard so as to efficiently and rapidlyremove dust remaining on the paperboard, a rotation mechanism is arranged, a moving block is driven to move through a hydraulic rod to allow a turning rod to drive a turning plate to rotate to turn the paperboard, manual turning is not needed, normal transmission is not influenced, the working efficiency is greatly improved, dust on the other side of the paperboard is removed by an arranged dust absorbing roller and a dust removing membrane, and therefore double-sided dust removing is achieved.
Owner:深圳市耀隆彩色印刷有限公司

Continuous coal mining machine paste filling mining method

The invention belongs to the technical field of application of coal mining equipment and coal mining method, and for solving the problems that conventional 'three unders (under building, railways and water bodies)' unexploited coal filling is high in cost and low in efficiency, matched filling materials are mostly solid filling materials, the transport project amount is large, the filling speed is slow, transportation and filling are difficult to match and synchronize, and the goaf compacting effect is not ideal after filling, provides a continuous coal mining machine paste filling mining method; a main lane and an auxiliary lane are arranged at the middle part of a mining area, the two lanes are connected through connection lanes at intervals, two sides of the main lane and the auxiliary lane are each provided with remining branched lanes, and two sides of each branched lane are each provided with mining adits for re-mining. A continuous coal mining machine performs re-mining at the one-side branched lanes, and a paste filling system performs goaf filling in the-other-side branched lanes. The mining and filling parallel operation is achieved, damage of coal mining on ground buildings (structures) and ecological environments is reduced, the economic benefits of the 'three unders' coal mining is increased, the mining and filling efficiency is high, equipment movement is flexible, the process is advanced, and the method is the quite ideal 'three unders' unexploited coal mining method.
Owner:TAIYUAN INST OF CHINA COAL TECH & ENG GROUP +1

Beam post steel ring hinging section point

The invention provides a beam post steel ring hinging section point, which comprises an upright post, a plurality of cross beams, an inner steel ring, an outer steel ring, a post steel ring plug pin and an inter-steel-ring plug pin, wherein the inner steel ring is sheathed on the upright post, the outer steel ring is sheathed on the inner steel ring, the post steel ring plug pin connects the inner steel ring onto the upright post, the inter-steel-ring plug pin connects the outer steel ring onto the inner steel ring, the inner steel ring rotates by using the post steel ring plug pin as a rotating shaft, the outer steel ring rotates by using the inter-steel-ring plug pin as a rotating shaft, a long shaft of the post steel ring plug pin and a long shaft of the inter-steel-ring plug pin are positioned in the orthogonal direction, and during the earthquake, the inner steel ring does limited rotation relative to the upright post and the outer steel ring, so the upright post generates relative movement with the cross beams and a floor slab, further, the mutual traction effect is not generated by each composition component of a building structure, the earthquake effect can be favorably reduced, in addition, the upright post and the cross beams are connected through rigid bonding-pre-stress-free steel bars, the building structure can be enabled to return to the initial position after the earthquake through the elastic recovery force generated by the bonding-pre-stress-free steel bars during the earthquake, and the structural damage caused by earthquakes can also be reduced.
Owner:TONGJI UNIV

Multifunctional intelligent household security control system

The invention discloses a multifunctional intelligent household security control system. The system comprises a master control module, a firefighting parameter collection module, an antitheft parameter collection module, a gate inhibition parameter collection module, a power supply module, an electric parameter collection module, a display alarming module, a man-machine interaction module, a safety regulation and control module, a storage module, a communication module and a mobile reception control terminal. According to the invention, different household indoor parameter information can be detected automatically, related environment data and security monitoring data is back fed in real time, the collected parameter information can be processed, regulation and control is implemented automatically when the data exceeds the thresholds, damage is reduced to the largest extent, the man-machine interaction system provides external connection channels in emergency and provides instant messaging for people via a bidirectional voice transmission system, a storage battery arranged in the power supply module can provide standby power supply after power failure, the anti-risk performance of the system is improved, and the system has wider application prospects and higher practical values.
Owner:合肥佳洋电子科技有限公司

Steel wire rope looseness and breakage alarming device

The invention relates to a steel wire rope looseness and breakage alarming device. The steel wire rope looseness and breakage alarming device comprises a first fixing device and a second fixing device both fixed on a vertically arranged steel wire rope, wherein a long threaded rod is also arranged between the first fixing device and the second fixing device; a movable contact is arranged on the top end of the long threaded rod; a third fixing device is also arranged above the long threaded rod; a short threaded rod is arranged on the third fixing device; a fixed contact is arranged on the tail end of the short threaded rod; the fixed contact is arranged on the upper part of a movable contact; a gap is formed between the fixed contact and the movable contact; the fixed contact and the movable contact are connected to a console respectively through control lines. When a steel wire rope is loosened or broken accidentally, the fixed contact and the movable contact are in contact to trigger safety protection devices of crane equipment such as an elevator and a stereoscopic parking garage to lighten damage caused by accidents. The steel wire rope looseness and breakage alarming device has the characteristics of simple installation, a capability of discovering looseness and breakage of the steel wire rope as early as possible, high sensitivity and the like.
Owner:SUZHOU INDAL TECH RES INST OF ZHEJIANG UNIV +2

Suspension-type high-speed width-regulation hydraulic turnover plow and stepless width regulation device thereof

Disclosed are a suspension-type high-speed width-regulation hydraulic turnover plow and a stepless width regulation device thereof. The suspension-type high-speed width-regulation hydraulic turnover plow comprises a suspension support, a turnover device, plow bodies and a stepless width regulation device body. The turnover device comprises a turnover cylinder and a turnover support, and the turnover cylinder is hinged to the suspension support and the turnover support respectively. The stepless width regulation device body comprises a width regulation cylinder, a width regulation bar and a parallel four-bar mechanism. The parallel four-bar mechanism comprises a main beam, a width regulation beam and at least two clamping seats, the main beam and the width regulation beam are parallelly arranged, and two ends of each clamping seats are respectively hinged to the main beam and the width regulation beam. One end of the width regulation cylinder is hinged to the main beam, one end of the width regulation bar is hinged to the width regulation beam, the other end of the width regulation cylinder and the other end of the width regulation bar are respectively hinged to the turnover support, and the plow bodies are disposed on the clamping seats. The suspension-type high-speed width-regulation hydraulic turnover plow is applicable to high-speed operation, small in resistance and good in soil turning over and covering.
Owner:CHINESE ACAD OF AGRI MECHANIZATION SCI +1

Measurement and control system capable of isolating strong impulse interference

The invention discloses a measurement and control system capable of isolating strong impulse interference. The measurement and control system comprises a pressure transmitter, an isolating circuit and a collecting system. The pressure transmitter is connected with a discharging cavity, and is used for measuring the pressure of the gas inside the discharging cavity when a discharging circuit discharges for the gas inside the cavity. The isolating circuit is connected with the output end of the pressure transmitter, and is used for sampling output electrical signals to electrically isolate input signals from the output signals and to achieve linear conversion between the input signals and the output signals. The collecting system is connected with the output end of the isolating circuit, and is used for collecting clear signals output by the isolating circuit to a computer system, and the clear signals are displayed through measurement and control software. According to the measurement and control system, interference signals coupled to a testing signal transmission line are isolated in the period of discharging to high-power impulses, and therefore the amplitude of the interference of strong impulses is effectively reduced, the damage to a testing system from the strong impulse interference signals is prevented, and the signals cannot lose. The measurement and control system has the advantages of being compact and ingenious in structure, safe, reliable, convenient and fast to use and the like.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Novel double-counterweight elevator

The invention discloses a novel double-counterweight elevator. The novel double-counterweight elevator comprises a vertically-arranged hoistway, a car moving up and down in the hoistway, a counterweight device, a driving device and a control device, wherein the driving device comprises a first driving device and a second driving device; the first driving device comprises a first steel wire rope, and a first motor, a first speed reduction box and a first dragging wheel which are in driving connection with one another in sequence; the second driving device comprises a second steel wire rope, and a second motor, a second speed reduction box and a second dragging wheel which are in driving connection with one another in sequence; the counterweight device comprises a first counterweight device and a second counterweight device; the first steel wire rope is wound on the first dragging wheel; two ends of the first steel wire rope are connected with the first counterweight device and the top of the car respectively; the second steel wire rope is wound on the second dragging wheel; two ends of the second steel wire rope are connected with the second counterweight device and the top of the car respectively; the first counterweight device and the second counterweight device are symmetrically arranged on the outer side opposite to the car; the first dragging wheel and the second dragging wheel are same in rotation speed and opposite in rotation direction.
Owner:HOMEFRIEND & FUJI ELEVATOR CO LTD

Road waste disposal area waste residue treatment device

The invention relates to the technical field of solid waste treatment accessory devices, in particular to a road waste disposal area waste residue treatment device. The road waste disposal area wasteresidue treatment device can break large waste, damage to a smashing roller can be reduced, raised dust caused during waste slag guide-out operation can be treated, the pollution to the construction environment and nearby air environment can be avoided, practicability reliability is improved, meanwhile, blockage generated by waste slag in a work cavity can be effectively avoided, construction proceed is ensured, the device comprises a smashing box, two sets of smashing rollers, two driving motors, a loading hopper, a discharging opening, two first motors, a left breaking plate, a right breaking plate, four sets of left guide columns, four sets of left guide sleeves, four sets of right guide columns, four sets of right guide sleeves, a left driving rod, a right driving rod, a driving shaftand a rotating disc; the right end of the left breaking plate and the left end of the right breaking plate are provided with multiple sets of breaking teeth, and a grid plate, a conveying box, a conveying motor, an atomizing pump, a conveying device, an atomizing head, a communication pipe, a discharging pipe, a left guide conveying plate and a right guide conveying plate are further included.
Owner:山西省交通环境保护中心站(有限公司)

Method for improving low-temperature impact toughness of high-strength steel hot rolled plate coil for engineering machines

The invention provides a method for improving the low-temperature impact toughness of a high-strength steel hot rolled plate coil for engineering machines, which belongs to the technical field of steel for engineering machines. The method adopts a hot feeding and hot loading process, and the control technical parameters in the process include a hot loading temperature, a pouring superheat degree and a drawing speed, wherein the hot loading temperature is 500 to 600 DEG C, the pouring superheat degree is 18 to 20 DEG C, and the drawing speed is controlled to be 1.2 to 1.4m/min. Production is carried out in a mode of coarsely rolling by two machine frames and finely rolling by six machine frames, six-pass rolling is adopted in a coarse rolling phase, six-pass fine rolling is adopted in a fine rolling phase, and the rolling reduction in a non-recrystallized areas of austenite is 65 to 70 percent. A front-end laminar flow cooling mode is adopted for quickly cooling to a target temperature after fine rolling, and the cooling speed is improved to 10 to 15DEG C/s. After being removed from the production line, the plate coil is cooled by wind to 100 DEG C and then by air to room temperature. The method has the advantages of ensuring high strength and high toughness at the same time, saving consumption and improving production efficiency.
Owner:HEBEI SHOUGANG QIAN AN IRON & STEEL CO LTD +1
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