255results about How to "Low construction requirements" patented technology

The invention discloses a high temperature energy conservation corrosion resistant coating material, which comprises filling material, addition agent and adhesive by the weight ratio of 1-5:1:1-10. The invention also discloses the process for preparing the coating material, which comprises the steps of mixing filling material powder with addition agent proportionally, grinding to 600 mesh in a wet grinder, finally stirring and mixing with adhesive.

A waterproof coil laying machine is provided, which pertains to the laying equipment for waterproof coil for waterproof tech in roofs of buildings, and comprises a frame, a laying mechanism and a heater. The laying mechanism comprises a coil shaft 21, guide roll 25 and 28, a tension roll 32, and a pressing roll 33; the heater comprises a mixture gas distribution valve 1, a mixed air conveying pipe 6, and a burner 7. The mixture gas distribution valve 1 is in form of 3 pipe sets. The burner comprises a burner gas pipe 8, a row of flame nozzles 9 mounted on the gas pipe and flame covers 10. The invention realizes mechanization in laying of waterproof coil, is of high construction efficiency, lightens greatly labor intensity; the invention employs LPG, especially compressed air for supporting combustion, the fire is strong, the temperature is high, can enable the surface of the waterproof coil to melt rapidly; and in addition, as the inner course has a low temperature rise, the structure and waterproof property of the whole material will not be damaged, the construction quality is good; as using LPG, the cost is reduced comparing with using gasoline.

The invention discloses a self-heat-preservation mortar-free distributed steel block masonry shear wall system and a construction method of the self-heat-preservation mortar-free block masonry shear wall system. A self-heat-preservation mortar-free block masonry shear wall is made of self-heat-preservation mortar-free die clamping blocks (1), horizontal reinforcing bars (2), vertical reinforcing bars (3) and grout concrete. The self-heat-preservation mortar-free die card blocks (1) are connected through rabbets (4) and mortises (5) in a die card mode, and the vertical reinforcing bars (3) are arranged into vertical holes (6) formed by the self-heat-preservation mortar-free die card blocks, and the horizontal reinforcing bars (2) are arranged in horizontal holes (7) formed by the self-heat-preservation mortar-free die clamping blocks (1). The grout concrete is finally poured so as to form the self-heat-preservation mortar-free block masonry shear wall. The construction method of the self-heat-preservation mortar-free block masonry shear wall sequentially comprises the following steps of performing preparatory work, building blocks of the bottommost layer, building blocks of other layers, inserting the bars and pouring the concrete.

The present invention discloses a tail device and a tail dragging method. The tail device comprises: a tail end row which at least comprises a boom system, a travelling mechanism and a lifting mechanism, wherein the boom system is provided with a lifting mechanism and is supported on the travelling mechanism; and a tailstock which is used for being removably fixed to the lower part of a lifted device, and is provided with lifting holes. In the process of lifting the lifted device from the ground, the lifting mechanism is in hanging connection with the lifting holes, and the lifting holes are located at the end deviating from the ground. When the tail device is use for lifting a device, the center of gravity of the lifted device can be guaranteed to be always located below a connection line between the lifting point of main lifting equipment and the lifting point or the support point of the tail end row. The tail device has the advantages of good security, small weight borne by the tail end row, low lifting cost, etc.

The invention discloses a construction method for a complex geological section earth pressure balance shield passing a middle air shaft. The construction method for a middle air shaft enclosure structure at the shield passing position comprises the following steps of: pouring a continuous middle air shaft enclosure wall, arranging four concrete supports on the enclosure wall, and reinforcing deep stirring piles of structural bottom plates; and constructing a plain concrete continuous wall on the outer side of the end enclosure structure to block a tunnel portal. A backfilling method comprises the following steps of: backfilling plastic concrete in a range of 3 meters, close to the tunnel portal, and backfilling cement stabilizing soil at the middle position. The construction method also comprises the following steps of: casting the structural concrete bottom plates, casting a side wall of a negative second layer to the position of 50 centimeters below the third support, performing horizontal hole prospection on the tunnel portal part, detaching the third support, and casting a structural concrete side wall to the position of 50 centimeters below a middle plate. Collapse accidents of the tunnel portal and serious safety accidents when an electrical park brake (EPB) shield reaches and a shield machine is buried can be effectively avoided under complex geological conditions; and secondary departure of the shield machine in the middle air shaft and related risks caused by the secondary departure can be avoided.

The invention provides a robot navigation method and system. The method includes the steps of: controlling a camera arranged on a robot according to a navigation instruction to obtain identification points around the robot; inquiring a preset map according to the surrounding identification points to determine the current position of the robot, wherein the preset map includes each navigation track and identification points on each navigation track; inquiring the preset map according to the current position and a target position of the robot to obtain a navigation track matched with the current position and the target position; and determining a moving direction and a moving path of the robot according to the current position and the navigation track, thereby enabling the robot to move to the target position according to the moving direction and the moving path, realizing navigation, avoiding arrangement of access point equipment of relatively high cost and construction transformation of a place, saving cost, and lowering a construction requirement of the place to which the robot navigation method is applied.

The invention discloses an iron-based nanocrystalline composite coating for protecting a boiler tail heating surface and a laser-cladding forming process of the iron-based nanocrystalline composite coating. The iron-based nanocrystalline composite coating comprises the following components in percentage by weight: 49.9-62.8% of Fe, 14.2-20.4% of Cr, 9.0-16.3% of Mo, 2.9-4.1% of B, 0.6-1.3% of C, 1.0-2.4% of Mn, 3.4-8.0% of W, 1.0-1.9% of Si and 0-3.9% of RE, wherein RE is a rare earth element. The forming process comprises the following steps: preparing alloy powder of the iron-based nanocrystalline composite coating; treating the surface of the boiler tail heating surface; preparing the iron-based nanocrystalline composite coating through a simultaneous powder feeding method and a laser-cladding method, wherein the laser cladding is performed for multiple times. The formed iron-based nanocrystalline composite coating is 1 mm above in thickness. The iron-based nanocrystalline composite coating can obviously enhance the wear resistance and corrosion resistance of the boiler tail heating surface, and reduce maintenance costs of worn and corroded parts and consumption of raw materials of a power plant.

The invention discloses a method for repairing and treating a quality defect of a cast-in-place pile. The method is characterized by comprising the following steps that 1) the defect position of the pile is dynamically measured through low strain; 2) the top of the pile is drilled into for core taking, the depth of the core taking exceeds the defect position, and the exceeding depth is 1-2 times of the diameter of a pile body; 3) high-pressure hole flushing is carried out, and mud blocks, fine sand and other filler in the defect position are removed; 4) high-pressure hole cleaning is carried out, dregs in a core hole are returned out of a core hole opening, and no dreg sediment exists in the core hole until water is clear and the dregs are removed completely; 5) the hole is punched and filled with high-pressure cement slurry, and fine cracks and fissures of the defect position are filled with the cement slurry; 6) pipe insertion is carried out, and a grouting pipe and a slurry discharge pipe are inserted; 7) the hole is sealed; 8) high-pressure grouting is carried out, and the core hole is filled with the mixed cement slurry. Dynamic testing and retesting can both be restored and reach the standard through the low strain after the defected pile is repaired and treated. The method is simple and easy to implement, the working period for repairing and treating the quality defect of the cast-in-place pile is short, repairing construction cost is low, original project design is changed slightly, and the repaired pile is reliable in quality.

The invention provides a design method of a high-speed ring road cross section line shape by determining the actual width of a lane to calculate and deduce a high-speed ring road circular curve and across section line shape of a easement curve section of a road, solve an accurate cross-section of the high-speed ring road, and provide a basis for reasonable optimization of the cross-section, thereby effectively reducing subgrade filling height and earthwork filling and digging amount, and reducing the number of special-shaped plates on a cement concrete pavement. The design method of the high-speed ring road cross section line shape effectively solves a problem of changes in horizontal width of the easement curve section of the road and improves design rationality. The design method comprises the following steps: by introducing a Gaussian elimination method, calculating a cross-section parabola line shape; determining lane chord length on the cross section corresponding to horizontal width of the lane; and using the interval dichotomy to iterate repeatedly to make a target lane chord length approach a design value, and obtaining final lane horizontal width and filling height to determine the final line shape of the cross section.

The invention relates to a wireless DSP electronic policeman system for standard definition for running a red light, comprising a host system and at least one one-way shooting system, wherein the host system is connected with the one-way shooting system by a wireless link; preferably, the DSP module of the one-way shooting system is respectively connected with a first coil detection module, a signal receiving module, a data sending module and a first standard definition camera; the principle controller of the host system is respectively connected with a signal acquisition module, a signal sending module and the signal receiving module; the signal sending module and the data sending module are respectively connected with the signal receiving module and the data receiving module by the wireless link; preferably, the signal sending module and the data receiving module are ZIGBEE modules, and the data sending module and the data receiving module are wireless AP modules. The host system also comprises a second coil detection module connected with the principle controller line and at least one second standard definition camera. The invention has convenient installation and use, breaks through the limitation of application environment and lowers cost.

The invention discloses a coating anticorrosion method for connection parts of steel structures, which particularly comprises the following steps: (1) performing surface treatment to the connection part of a steel structure at a construction area to achieve a level of above St2 standard with no obvious bubbling or floating rust and no acute angle of surface protrusions; (2) uniformly smearing an anti-corrosion plaster on the surface of the connection part of the steel structure treated in step (1), wherein the amount of the anti-corrosion plaster is 10-1000 g/m2, and the smearing time is 1-10 times; (3) covering at least one layer of anti-corrosion strip outside the anti-corrosion plaster; (4) coating a protective cover at the surface of the anti-corrosion strip. The invention has excellent anticorrosion effect with an effective protection effect of above 20 years, has convenient construction and simple surface treatment, is operable with moisture and water, is applicable to structures with any shape, has good tightness and impact resistance, provides almost no additional load to structures, and has strong construction feasibility.

The invention relates to a waterproof material for a cement concrete bridge floor and a preparation method of the waterproof material. The waterproof material is obtained by the following steps of: generating amino methyl acid ester by using isocyanate and compound polyalcohol, then adding ordinary heavy-traffic paving asphalt, and compounding and modifying by a tertiary amine catalyst, a compound antifoaming agent and ethyl acetate. The waterproof material can be firmly bonded with the cement concrete bridge floor, the resistance to high temperature and low temperature is good, the waterproof material can undergo comprehensive function requirements of temperature transforming and long-term loading, the destruction of the bridge structure caused by water seepage is alleviated, the service life of the road bridge is prolonged, the construction operation is safe and simple, the construction speed is high, the film forming time is short, the requirement on bridge floor construction is not high, and the construction can be carried out fast. The preparation method of the waterproof material is simple and easy to operate, the isocyanate, the compound polyalcohol and the ethyl acetate in a dehydrated state are not decomposed or oxidized in vacuum, so that the stability of each component is guaranteed and the prepared waterproof material has high solid content and good material performance.

The invention relates to a garbage compressor of vertical compression type, which comprises casing, rack, indenter vehicle, pushing blade, translation vehicle and hydraulic cylinder of pushing blade. The invention is characterized in the following steps: inner casing equipping compression warehouse, rack being equipped on bearing surface of foundation, casing equipping indenter vehicle guide rail to let vehicle move back and forth, indenter vehicle equipping indenter compressor cylinder and self-locking mechanism transferring compression force, translation vehicle that pushes indenter vehicle to move horizontally beingequipped between indenter vehicle and casing, rack equipping suitcase hydraulic cylinder to drive casing move on the vertical direction, one side of hydraulic cylinder of pushing blade in casing connecting with pushing blade and the other connecting with casing. The invention has the advantages of low height of apparatus, low cost and convenient installment and maintenance.

The present invention provides a gravitational settlement tilt vibration monitor and its use method, comprising a beam, the beam straddles different partitions of building components, one end of the beam located in one of the partitions is hinged to the building component, and a control box is fixedly connected to the bottom of the beam , the control box is fixed with a two-axis inclination sensor and a rope displacement sensor. One end of the beam located in another partition is hinged to a swing arm, and the upper end of the swing arm is hinged to a building component in another partition. The pulley, the stay rope The stay rope of the stay rope displacement sensor passes through the upper end of the beam and is fixed on another partition of the building component around the fixed pulley. The combined action of the displacement sensors realizes the monitoring of the structural environment. The structure has the characteristics of high reliability, wide coverage, low cost, and convenient installation and maintenance. It is especially suitable for environmental monitoring of cable tunnels.

The invention provides a gypsum-based ready-mixed mortar and a preparation method thereof. The ready-mixed mortar comprises 450-500 parts of hemihydrate gypsum, 550-600 parts of aggregate, 0.7-1.5 parts of compound modification additive, 0.2-1.0 part of foaming agent and 1-10 parts of setting retarder. The preparation method includes the following steps: mixing hemihydrate gypsum, aggregate, compound modification additive, foaming agent and retarder to obtain ready-mixed mortar. The gypsum-based ready-mixed mortar has strong adhesion to the substrate, which overcomes the shortcomings of easy cracking and hollowing in the use of traditional cement-based ready-mixed mortar; the one-time survival thickness is 4mm-2cm, which is smooth to the wall surface The requirements for the degree of strength are not high, and the construction requirements are greatly reduced; the hardening is fast, which can speed up the construction progress; the cost is low, and at the same time, it also has the advantages of good fire resistance, automatic temperature adjustment function, and light weight.

The invention discloses a plastic water channel, comprising a plurality of channel bodies, wherein the channel main bodies are connected in a manner of inserting end to end; the channel main bodies comprise channel bodies and channel sides which are arranged on the edges of the channel bodies; the channel sides include the first channel sides arranged at the ends of the channel bodies and the second channel sides arranged at two sides of the channel sides; both the first channel sides and the second channel sides are provided with bolt holes; the first channel sides are additionally provided with bearing ports, inserting ports, sealing grooves and sealing strips; strengthening ribs are additionally arranged at the bottoms of the channel bodies; the strengthening ribs include the first strengthening ribs which stretch in a transverse direction and the second strengthening ribs which stretch in a vertical direction; and the first strengthening ribs and the second strengthening ribs are distributed at the bottoms of the channel bodies in a staggered manner. According to the plastic water channel, the technical problems of high consumption, high cost, harm to environment, great construction intensity, low mounting efficiency, demand of maintenance and long working period of the prior art.

The invention relates to a multifunctional culture water drainage strobe. A barrel-drain is arranged at a position outside a culture pond filled with the culture water and lower than the bottom of a drainage port of the culture pond; the drainage strobe comprises an outer sleeve arranged in the culture pond; the lower part of the outer sleeve is provided with a water through hole groove; the bottom of the culture pond inside the outer sleeve is provided with a drainage port; one end of a drainage concealed conduit arranged below the bottom of the culture pond is communicated with the culture pond through the drainage port; an inner insertion tube arranged in the outer sleeve can be inserted into or pulled out of the end of the drainage concealed conduit; a swing type water level control tube arranged in the barrel-drain can be inserted into or pulled out of the other end of the drainage concealed conduit; the water level control tube inserted into the drainage concealed conduit can swing around a connecting point between the water level control tube and the drainage concealed conduit; the top ends of the outer sleeve, the inner insertion tube and the water level control tube are all opening ends; and the top end of the inner insertion tube is lower than that of the outer sleeve. The strobe has the characteristics of automatic control of water level, good sealing performance, effective drainage of culture water at the bottom layer, timely drainage of redundant water in disaster weathers, simple and convenient construction and the like.

The invention discloses a generalized predictive control closed-loop insulin infusion system based on an adaptive reference curve strategy. The system comprises a blood glucose detection module, a controller, a program module and an insulin pump, the blood glucose detection module is used for acquiring the blood glucose of a user, and an output end of the blood glucose detection module is connected with an input end of the controller through signals. The insulin pump is used for infusing insulin into the user, and an input end of the insulin pump is connected with an output end of the controller through signals. The program module is executed by the controller, acquires the blood glucose of the user through the blood glucose detection module and adjusts the infusion rate of the insulin pump according to a CARIMA (controlled autoregressive integral moving average) model, a minimum variance control algorithm and the adaptive reference curve strategy. According to the generalized predictive control closed-loop insulin infusion system based on the adaptive reference curve strategy, adaptive reference curves can be generated according to blood glucose fluctuation of different patients,so that the infusion rate of the insulin pump can be flexibly controlled.

The invention discloses a treatment method of deviation and fracture remediation of a pile body of a filling pile. The treatment method of the deviation and fracture remediation of the pile body of the filling pile is characterized by comprising the following steps: 1) dynamically determining the defect position of the pile under low stress; 2) rectifying the deviation of the pile body; 3) drilling and coring the top of the pile, wherein the coring length exceeds the defect position, and is 1-2 times of the diameter of the pile body; 4) flushing holes with high pressure, namely clearing filled materials of mud and the like in the defect position; 5) clearing the holes, namely returning sink residue in core holes out of the core holes; 6) filling the holes by high-pressure cement paste, namely filling cracks in the defect position; 7) inserting pipes, namely inserting slurry filling pipes, special accelerator pipes and paste discharge pipes; 8) sealing the holes, namely sealing the top parts of the core holes; 9) filling paste under high pressure, namely filling cement paste into the core holes; 10) carrying out backfill consolidation grouting on a soil discharge area and an empty hole area close to the pile. The method provided by the invention is simple and feasible, the working period of filling pile quality defect remediation treatment is short, the remediation construction cost is low, the original engineering design change is small, the quality of the remedied pile is reliable, and he original defect pile can be remedied and can achieve the standard through low-stress dynamic repeated determination.

This invention is a new non-support, long distance compensating method of underground pipe and its system. First, the pipes to be laid are arranged on the underground foundation. Then, two or more than two rotating compensators are assembled at the set compensating positions to compensate the pipe length change owing to expansion with heat and contraction with cold. The system includes conveying pipeline, which is buried underground and is composed of several main pipelines and branch pipelines; compensating device which is arranged between main pipelines, between main pipelines and branch pipelines or between branch pipelines. The compensating device is composed of rotating compensator and connecting pipe. This invention makes construction easy and convenient. The pipeline is safe.