53results about How to "Avoid secondary construction" patented technology

The invention discloses a smooth blasting method for controlling flatness of profile surface for an underground chamber. The method comprises the following steps: 1) organizing topic task force to investigate on site according to the over-under-excavation phenomenon in a practical construction effect, and collecting site pictures; 2) carrying out mathematical analysis and evaluation to ensure that a smooth blasting effect is achieved; 3) analyzing key parameters determining smooth blasting, wherein the key parameters comprise hole spacing of peripheral holes, minimum resistant line, close coefficients of the peripheral holes, charge quantity and charging structure of the peripheral holes, blasting interval and the like; 4) calculating the hole spacing of the peripheral holes of the underground chamber according to fluid-dynamic theory; 5) making specific countermeasures and implementation plans under the combination of field investigation, test data and theoretical analysis results; and 6) checking the smooth blasting effect. The method has the characteristics of saving construction cost, improving construction quality and improving economic benefit, and is applicable to smooth blasting of the underground chamber in the fields of water conservancy and hydropower engineering , tunnel engineering, underground space structure and the like.

The invention discloses an automatic control cutter with an overload protection function. The problems of incapability of a cutter in complete cutting of concrete, no overload protection function of the cutter and the like are effectively solved. The automatic control cutter comprises a rack, and is characterized in that a bottom plate is hinged to the lower end of the rack, wherein electric pushrods are connected between the bottom plate and the rack; a first fixed frame and a second fixed frame are fixedly arranged on the inner lower part of the rack; a rotating shaft is arranged in the first and second fixed frames in a penetration manner; a mounting section of the which the diameter is smaller than that of the rotating shaft is arranged on the middle section of the rotating shaft; a shaft sleeve is arranged on the mounting section in a sleeving manner; a chain wheel is fixedly arranged outside the shaft sleeve, and is connected with an engine through a chain; a reset spring pressed against one end of the shaft sleeve is connected to the rotating shaft in the sleeving manner; a first groove is formed in the other end of the shaft sleeve; a steel ball is connected in the first groove through a spring; a second groove capable of accommodating the steel ball is formed in the rotating shaft. The automatic control cutter is simple and reasonable in structure, a cut road can be completely separated from an earth foundation to avoid secondary construction, and overload protection is added at the same time of cutting to prevent a cutting disk from being stressed, deformed and damaged.

The invention belongs to the technical field of quick-drying coatings, and concretely relates to a quick-drying sand textured coating. The quick-drying sand textured coating is disclosed to overcome the defects of too long surface drying time of sand textured coatings and uneven distribution of solid components in coatings due to direct addition of a quick-drying assistant. The quick-drying sand textured coating comprises 5-10 wt% of water, 2-6 wt% of the quick-drying assistant, 15-20 wt% of an emulsion, 70-75 wt% of a pigment filler and 1-5 wt% of assistants, and the assistants include a wetting agent, a dispersant, a thixotropic agent and a thickener. The emulsion is a 40-60 wt% styrene acrylic emulsion or a pure acrylic emulsion. A film forming assistant, an anticorrosive bactericide and an antifreeze agent can be selectively added to the assistants. The coating is suitable for brushing exterior walls of buildings.

The invention provides a rapid survey and setting-out method for high-rise buildings. The rapid survey and setting-out method comprises the following steps: erecting a GPS-RTK (Global Positioning System-Real-time Kinematic) base station on an empty place of a construction site; erecting a survey robot at a middle position of a construction floor; setting at least four control points at the periphery of the construction floor by utilizing a GPS-RTK mobile station; transmitting a coordinate of each control point to the survey robot to finish oriented work of a free station; finally, obtaining a structure position of a floor needing to be subjected to setting-out by utilizing a BIM (Building Information Modeling) technology; finishing the setting-out of a main control axis of the floor and a formwork erecting line of a structure through the survey robot. The rapid survey and setting-out method is simple to operate and convenient to use; automatic, paperless and visualized three-dimensional setting-out of construction buildings is really realized, and the setting-out efficiency and setting-out precision of the main control axis of each floor and the formwork erecting line of the structure are improved; the accuracy of a setting-out result is ensured from the source; meanwhile, the safety problem of falling objects is also avoided.

The invention discloses a calculation method for shaft sand filling amount on the basis of a compaction function, and belongs to the field of the oil-water well sand filling technology. The calculation method is based on the following factors: the leakage of a shaft is less than or equal to 5m<3> / h, and shaft overflowing is not in the presence; the compaction function is a main factor which influences the sand filling amount; and the internal pressure gradient of a sand filling section is equivalent to lithostatic pressure gradient. The method comprises the following steps that: setting the upper boundary and the lower boundary of the sand filling section in the shaft as h1 and h2, and setting depth between any interface of the upper boundary and the lower boundary and ground as h; and calculating the intensity of pressure of the sand filling section on the h1, and calculating the corresponding equivalent depth h1* of the sand filling section on the h1 so as to determine the equivalent depth h* of the sand filling section on the h to determine the porosity of the sand filling section on the h under a compression state so as to determine corresponding volume when the depth of the sand filling section in the shaft under the compression state is determined as h, and therefore, through the above parameters, carrying out calculation to obtain the volume, i.e., the sand filling amount, of the sand filling section from h1 to h2 under a state of the loose ground. By use of the method disclosed by the invention, the one-time success rate of sand filling construction is improved.

The invention discloses a wall surface assembly and an installation method. The wall surface assembly comprises a floor, a first wall plate and a second wall plate which are in butt joint connection;a leveling device comprises a leveling piece, a mounting frame and a caulking plate; the leveling piece comprises a leveling end and a first mounting end; the mounting frame comprises a leveling plateand a leveling block, and the first mounting end is mounted on the leveling block; the leveling plate is mounted on the first wall plate in an attached manner; the caulking plate is vertically connected to the back surface of the leveling plate; a first mounting plate is mounted on the leveling plate, and a first fitting plate is mounted on the second wall plate in a fitting manner; a wall-floorconnecting piece comprises a supporting face and a first wall plate groove, the first wall plate is clamped in the first wall plate groove, and a floor abuts against the outer wall of the first wall plate groove. The installation method of the wall surface assembly is used for installing the wall surface assembly. According to the wall surface assembly and the installation method, the leveling effect is improved, the flatness of the wall plates at a butt joint position is improved, it is guaranteed that gaps between any two adjacent wall plates are consistent, and the leveling process is simplified.

The invention discloses a painting device for an architectural wall body. The painting device comprises an installation frame, a shell body, a first motor, a second motor and a first belt pulley mechanism. The painting device is characterized in that a material storing groove is formed in the bottom end of the installation frame interior; a fixed wheel shaft is mounted at the top end of the material storing groove; a painting roller is mounted on the surface of the fixed wheel shaft; the shell body is mounted at the top end of the installation frame; the shell body is internally provided withthe first motor and the second motor correspondingly; an output end of the first motor is connected to a first pulley by the first belt pulley mechanism, an output end of the second motor is connectedto a second pulley by a second belt pulley mechanism; and the first pulley and the second pulley are correspondingly connected to the top end of the installation frame by ropes. Through a series of structures arranged in the painting device, in the architectural wall body painting procedure, a compound smashing mode of grinding and polishing is realized, and the smashing purpose is realized safely, quickly and efficiently.

Provided is a multi-layer compound three-dimensional waterproof drainage network. A body is of a layered structure and comprises a geonet, a geofabric and a compound geomembrane. The compound geomembrane and the geofabric adhere to the top and the bottom of the geonet respectively. The compound geomembrane is formed by two geofabric layers and a geomembrane layer. The two geofabric layers are located on the upper side and the lower side of the geomembrane layer respectively. The geofabric and the compound geomembrane with the two geofabric layers and the geomembrane layer adhere to the two sides of the three-dimensional geonet to form the multi-layer compound three-dimensional waterproof drainage network, and the multi-layer compound three-dimensional waterproof drainage network is high in waterproof drainage capability and can bear a long-term high-pressure load; the multi-layer compound three-dimensional waterproof drainage network is very high in tensile strength and shear strength, the probability of geofabric embedding in a net core is reduced, the long-term stable water-guiding and waterproof effects can be achieved; the anti-pressure capability of the multi-layer compound three-dimensional waterproof drainage network is far larger than that of an ordinary drainage network, the water prevention and drainage are integrated, the cost is greatly reduced, and secondary construction is avoided.

The invention discloses a shield tunnel internal supporting trolley system under small spacing, shallow soil covering and small radius conditions. The shield tunnel internal supporting trolley systemcomprises a trolley track, a muck vehicle track, a trolley and a muck vehicle, wherein the trolley track and the muck vehicle track are arranged at the bottom of a tunnel, the trolley is matched withthe trolley track, and the muck vehicle is matched with the muck vehicle track; the trolley track adopts an original track on which a shield trolley walks; and the trolley comprises a frame, a walkingmechanism and a supporting mechanism, the upper portion of the frame can contain a ventilation pipeline, the lower portion of the frame stretches across the muck vehicle and does not interfere with the muck vehicle, the supporting mechanism comprises arc-shaped plate supports, sliding hinge pieces and telescopic jacking pieces, the arc-shaped plate supports are distributed on the upper portion and the two sides of the tunnel, gaps exist between the adjacent arc-shaped plate supports, the arc-shaped plate supports are slidably hinged to the frame through the sliding hinge parts, the arc-shapedplate supports are telescopically connected with the frame through the telescopic jacking pieces, and when the telescopic jacking pieces drive the arc-shaped plate supports to be ejected out and retracted back, the sliding hinge parts play a role in guiding and limiting. According to the system, duct pieces are prevented from being damaged, advancing spaces of the ventilation pipeline and muck isreserved, and the influence on the first-departure line tunnel is reduced to the minimum.

The invention provides a submarine pipeline suspension inhibition device. The submarine pipeline suspension inhibition device is mounted during pipeline laying and comprises a backing plate and a pipeline supporting device, wherein the backing plate is deeply buried in a seabed, positioned under the seabed, connected with the pipeline supporting device and used for supporting and fixing the pipeline supporting device; the pipeline supporting device comprises a supporting groove and a pipeline supporting frame which is used for supporting the supporting groove, the upper part of the pipeline supporting frame is connected with the supporting groove, and the lower part of the pipeline supporting frame is connected with the backing plate; a groove is formed in the supporting groove, a submarine pipeline is arranged in the groove, and the supporting groove adopts a semi-surrounded structure to support the submarine pipeline; the supporting groove is located above the seabed, the bottom faces of the two ends of the supporting groove are in smooth transition connection with the seabed, a reserved seabed passage is formed by the space between the supporting groove and the seabed, ocean currents can flow in the reserved seabed passage, and therefore, scouring to the seabed is reduced. The submarine pipeline suspension inhibition device has the advantages that secondary construction canbe avoided, suspension is avoided, and time and labor are saved.

Disclosed is a cutting machine with the overload protection function. The problems that excessive road cutting is performed, incomplete cutting is performed and a cutting machine does not have the overload protection function due to the fact that the depth is artificially set in the cutting process of a cutting machine are effectively solved. The construction time can be shortened, the construction progress can be accelerated, the technical requirement of operators is lowered, the operators and a cutting machine body are protected, and the cutting machine has generalization; the cutting machine comprises a machine frame, a pushing handle, wheels, a cutting piece, a small hydraulic station, a control system and a hydraulic motor. The cutting machine is simple and reasonable in structure, vertical motion of the cutting piece can be controlled while cutting is performed, it is ensured that a cut road can be completely separated from a soil matrix, secondary construction is avoided, the overload protection function is added while cutting is performed, the hydraulic motor is adopted as power, the protection effect can be achieved when the stress of the cutting piece changes suddenly, and the cutting piece and a transmission element are prevented from being deformed or damaged by excessive strength.

Disclosed is an automatic control cutting machine for architecture. The problems of road overcutting or incomplete cutting caused by man-set depth in the cutting process of a cutting machine are solved effectively. Construction time can be saved, the construction progress is accelerated, and the technical requirements for operators are lowered, so that the automatic control cutting machine has higher popularization performance. The automatic control cutting machine comprises a rack and is characterized in that a butt strap is transversely arranged in the middle of the rack; a small hydraulic station located on the butt strap is arranged in the rack; a driving box is connected to the position below the butt strap; sliding blocks connected with sliding rails are arranged around the driving box; a first hydraulic motor is installed in the driving box and connected with the small hydraulic station through an oil pipe; the front end of the first hydraulic motor is connected with an output shaft; a torque sensor is fixed to the output shaft; a cutting blade is installed at the end of the output shaft and connected with the output shaft through an elastic key; the automatic control cutting machine is simple and reasonable in structure; up-down movement of the cutting blade can be controlled during cutting, so that the effect that a cutting path can be completely separated from an earth base is ensured, and thus secondary construction is avoided.

The invention discloses an intelligent energy-saving harvesting device and a using method thereof, and relates to the technical field of water area environmental protection machinery and equipment. The present invention comprises a hull, and one end of the top of the hull is equipped with a waterweed harvesting mechanism. In the present invention, through the mutual cooperation between the harvesting motor, the feeding belt, the driving wheel, the frame, the first cutting knife and the second cutting knife, the device has a simple structure and a small volume, and can harvest aquatic plants in medium and small water areas. It is convenient for maintenance and reduces the purchase cost and maintenance cost of the device. Through the mutual cooperation among the shell, the first photoelectric liquid level sensor, the first water pump, the third photoelectric liquid level sensor, the alarm and the controller, the device is While harvesting aquatic plants, biological agents can be sprayed to control the waters, which reduces the cost of waters treatment and improves the effect of waters treatment. At the same time, it can intelligently monitor the internal biological agents and remind the staff in time of the biological agents that are about to be used up. Preparations are supplemented.

The invention provides a mine WIFI system capable of accurate range finding of secondary spread spectrum, and aims at solving the problem that WIFI technology is suitable for mine wideband wireless transmission and communication but causes inaccurate positioning due to weak range finding capability. An m sequence is used for carrying out secondary spectrum spreading on range finding WIFI signals in a movement station; and a double digital matched filter spreading code capturing algorithm is designed in a base station to capture the range finding signals, a high-speed digital matched filter captures the m sequence of secondary spread spectrum signals and obtains fine measurement time which decides the range finding precision to be 0.49m, and a low-speed digital filter is used to capture a Barker sequence of the WIFI signals and obtain coarse measurement time which decides the range finding distance to be 300m. According to the system, two MAC control frames independent from a present WIFI system are designed for range finding, and range finding does not influence normal WIFI communication of the system. Reliable technical support is provided for a developer accurate positioning system on the basis of the mine WIFI system.