40results about How to "Guarantee stress stability" patented technology

The invention discloses a high-segmentation upward deep hole ore extraction zero-dead-zone following filling mining method. Firstly, a drilling chamber is constructed at the top end of a stage stope room, an operating space is formed through supporting, a mine collecting structure is established at the bottom end, upward chambering is carried out, a compensation space is formed, and the mining and cutting work is finished; secondly, a vertical deep hole is drilled in the drilling chamber, and the configuration of a boundary presplitting smooth blasting bomb hole is matched; thirdly, the upward segmentation blasting is carried out, ore reserving and ore removing are carried out, the zero dead zone in the ore removing process is ensured, and meanwhile the compensation space is guaranteed; fourthly, after appropriate ore drawing in the final blasting, an interlayer is arranged on the top of an ore heap, and the interlayer is covered with dead rock to fill the top dead zone along with the ore drawing; fifthly, after ore drawing is finished, stope room dead rock cemented filling is achieved through the potting material at the top end. The mining method is suitable for the environment where mine fragmentation is not stable, the large dead zone is not allowed, but high-segmentation, large-scale and large-yield thick and large ore body mining is urgent. The mining method has the advantages that the structure is simple, and high efficiency and economic efficiency are achieved.

The invention provides a rotating joint connecting device for a prefabricated component inclined strut and an application method. The rotating joint connecting device aims at solving the problems that when an inclined strut used for adjusting the perpendicularity is mounted through a PC component, the inclined strut is subjected to eccentric compression due to off position of pre-buried parts, and thereby mounting quality of the whole prefabricated component is influenced. The connecting device comprises an embedded plate, a 360-degree rotatable joint and a limiting component, the embedded plate is fixedly connected with the PC prefabricated component through embedding parts, the 360-degree rotatable joint is perpendicular to a prefabricated wall component or a prefabricated floorslab component and fixedly connected to the embedded plate, and the limiting component penetrates through the end of the inclined strut and is fixedly connected with the free end of the 360-degree rotatable joint. By means of the connecting device, hinge of joint positions can be achieved, and the situation that additional stress is generated to slabs and support bars is avoided. The application method comprises the following steps: 1, fixedly connecting the two ends of the inclined strut with the prefabricated wall component and the prefabricated floorslab component respectively; 2, rotating the inclined strut, so that the end of the inclined strut is perpendicular to the embedding parts.

The invention discloses a raft foundation building lifting and reinforcing structure and method under a corrosive geological environment. The lifting and reinforcing structure comprises a lower columnof an existing building, a raft foundation connected with the bottom of the column, a composite foundation reinforcing layer connected with the lower portion of the raft foundation, a composite pilefoundation connected with the lower portion of the composite foundation reinforcing layer and a water stop curtain connected to the periphery of the raft foundation. During the construction, by arranging the water stop curtain, blocking of the water in a water containing layer and preventing of the outflow of slurry and in-situ water and soil are facilitated, the inverted-L-shaped design of the water stop curtain can further avoid the re-corrosion of the raft foundation, and the limit of the lateral displacement is ensured; and by arranging the composite foundation reinforcing layer and the composite pile foundation, local lifting and overall reinforcement of the raft foundation are facilitated, the water stop curtain is combined to improve the overall bearing capacity, by forming groundwater monitoring holes, monitoring of the level of groundwater during the field construction is facilitated, and maintaining of the stability of water and soil pressure in the underground environment isfacilitated.

The invention discloses a bracket separating machine and relates to the field of bracket separating equipment. The bracket separating machine comprises a rack. The rack is provided with a bracket pushing mechanism, a tooth separating mechanism, a bracket sucking mechanism and a box bracket conveying device. The bracket pushing mechanism comprises a bracket feeding platform arranged on the rack. Asliding groove is formed in the bracket feeding platform in the bracket pushing direction. A bracket pushing frame is movably arranged in the sliding groove. The upper portion of the bracket pushing frame extends out of the sliding groove to be provided with a bracket pushing plate. The bottom of the bracket feeding platform is provided with a guide rail in the bracket pushing direction. The rackis provided with a traction mechanism used for drawing the bracket pushing frame to move towards the tooth separating mechanism. The tooth separating mechanism is arranged at the tail end of the bracket feeding platform. The bracket sucking mechanism is arranged at a position, corresponding to the tooth separating mechanism, of the rack. The box bracket conveying device is arranged under the bracket sucking mechanism and is located on the rack. An arc-shaped bracket guiding plate is arranged between the bracket feeding platform and the box bracket conveying device on the rack. The lower end of the arc-shaped bracket guiding plate is connected with the box bracket conveying device. The bracket separating machine has the advantages of being good in bracket sucking effect and stable in bracket sucking and bracket pushing force, and requiring no external power source.

The invention provides a non-converging reactor hanging rack device. The device comprises a non-magnetic steel hub member for providing support and a plurality of lifting arms. The non-magnetic steel hub member comprises an intermediate ring body portion and a plurality of extension parts; a plurality of the extension parts are evenly arranged on the outer circumferential surface of the intermediate ring body portion. A plurality of the lifting arms are mounted on a plurality of the extension parts in a one-to-one correspondence mode; the length direction of the lifting arms is consistent with the length direction of the extension parts. A through opening is arranged on the side wall of the intermediate ring body portion along the axial direction, so that the intermediate ring body portion is an intermediate circular ring portion with an opening so as to form a broken ring for preventing the intermediate ring body portion from forming circulation flow. The invention also provides a reactor. When the provided non-converging reactor hanging rack device is applied to reactor products, metal parts of the reactor hanging rack device can be effectively prevented from overheating; the stress stability of the reactor is ensured and the reliability of the reactor products is enhanced at the same time.

The invention discloses a steel box girder supporting system applicable to an asymmetric suspended monorail, and belongs to the field of suspended monorails. The steel box girder supporting system ispreferably provided with the structure of piers and a steel box girder; horizontal cap beams are arranged on the tops of vertical pier columns; bending arms are arranged at the bottoms of cantilever ends of the cap beams; corbels are arranged at the side wall surfaces of the pier columns; anti-compression supports are arranged on the top surfaces of the bending arms and the corbels; lug plate boxes corresponding to the anti-compression supports are arranged on two sides of the steel box girder; and the lug plate boxes match the anti-compression supports so as to form the stable steel box girder supporting system. The steel box girder supporting system disclosed by the invention is simple in structure and simple and convenient in arrangement, and has the advantages of effectively realizingthe conversion of tensile stress to compressive stress of the suspension structure, ensuring the force-bearing stability of the supporting system, reducing the amount of steel materials, saving the construction cost, improving the stability and service life of the steel box girder supporting system, promoting the application of asymmetric suspended monorail traffic, and achieving a good application prospect and promotion value.

The invention discloses a spirally ascending multi-space structural system. The spirally ascending multi-space structural system comprises a spirally ascending outer steel mesh, a polygonal steel frame connected to the inside of the outer steel mesh, and a set of core cylinders connected between the polygonal steel frame and a ground foundation;the outer steel mesh is a tubular structure composedof polygonal rods; an outer surface layer is connected with the outer surfaces of the outer steel mesh and the polygonal steel frame, wherein the polygonal steel frame is arranged in a corridor mannerbetween the outer steel mesh. According to the spirally ascending multi-space structural system, a flexible and multi-layered space structure is constructed by setting the outer space steel mesh in aspirally ascending manner, so that the overall rhythm of a building is beautiful, the outer space steel mesh is a polygonal tubular space, the smooth operation of the interior is ensured,and the external meandering design is highlighted; at the same time the interconnected design has a modern meaning, the overall design of the structure and the choice of steel structure are reasonable, and implementation is easy.

The invention discloses a method for handling dangers of a cement-earth gravity-type enclosure wall in a soft soil area, and belongs to the field of civil building engineering construction technologies. The method comprises the following steps: unloading an active area of a foundation pit to reduce water-earth pressure of the active area of the foundation pit; exerting a counter pressure to a passive area of the foundation pit to increase the resistance of the passive area; limiting a construction load; taking filling and repairing measures in a timely manner for cracks in a capping plate and a wall body of the cement-earth gravity-type enclosure wall; reinforcing the cement-earth gravity-type enclosure wall, controlling earthwork excavation, and quickly forming a rigid support-changing mechanism. Through a series of measures, foundation pit accidents, such as instability, slip and collapse, caused by deterioration of dangers such as deformation, cracking and leakage in an enclosure section of the cement-earth gravity-type enclosure wall during foundation pit excavation in a muddy soft soil layer can be prevented, so that safe and smooth implementation of foundation pit engineering are ensured.

The invention discloses a construction method of a tunnel drainage and waterproofing comprehensive treatment system. The tunnel drainage and waterproofing comprehensive treatment system comprises an outer water interception system, an outer drainage system, a tunnel waterproofing system and a tunnel drainage system. The outer water interception system comprises a water interception groove on the outer ground and a conveying pipeline from the water interception groove to the water collecting position, the outer drainage system comprises an outer water resisting layer and an outer drainage ditch connected to the side, close to the tunnel portal, of the outer water resisting layer, the tunnel waterproofing system comprises a waterproofing layer arranged in a lining, and the tunnel drainage system comprises side drainage ditches on the two sides of the road surface in a tunnel and the like. By means of the outer water interception groove, the outer water resisting layer and the outer drainage ditch of the tunnel, collected water of a slope body on the upper part of the tunnel and a large amount of flowing water in the rainwater period are effectively drained and prevented; through a waterproofing layer, a first water stop belt, an annular drainage pipe and the like in the tunnel, flowing water in cracks and karst caves in the tunnel can be dredged and drained; and drainage holes are connected with the annular drainage pipe, so that water flow in the reinforced tunnel lining can be drained through a retaining wall.

The invention discloses a concrete foundation pit supporting and monitoring construction technique based on an axial force servo system. The concrete foundation pit supporting and monitoring construction technique comprises the steps of preparing for construction, constructing a foundation pit enclosure structure, constructing a support structure, installing the axial force servo system, applying axial force, performing earth excavation, constructing a foundation and a structural layer, removing the support structure layer by layer along with the construction of a basement structure, and monitoring a foundation pit. According to the construction technique, the direct connection of a support beam and an enclosing purlin in the prior art is changed into the connection of the support beam and a truss beam, axial force is transmitted to an enclosing purlin structure through the axial force servo system, finally, the axial force is distributed on the foundation pit enclosure structure, and the enclosing purlin of an area to which the axial force is applied by the axial force servo system is separated from other enclosing purlin support steel bars and concrete, so that a non-enhanced area is not influenced by the area to which the axial force is enhanced, the change of the axial force is actively controlled by the axial force servo system, so that the deformation of the foundation pit support structure can be effectively reduced, the stability and safety of the foundation pit are guaranteed, the axial force change and deformation of the reinforced concrete foundation pit support structure are monitored in real time, and danger early warning is given out in advance.

The invention discloses a prefabricated box culvert structure with a widened top. The structure comprises a plurality of box culvert components (2) which are sequentially spliced, each box culvert component (2) comprises a top plate and side plates at the two sides, the top surface of each top plate is a passage surface for material transportation, the two sides of the top of each box culvert component (2) are provided with widening parts (3), the size of each widening part (3) is matched with that of the corresponding box culvert component (2), the top surface of each widening part (3) is flush with the top surface of the corresponding top plate, the sum of the width value of each widening part (3) and a value of the distance between the corresponding side plates at the two sides is the width of the corresponding passage surface, and therefore the width of the passage surfaces is increased; each widening part (3) is of a wedge-shaped structure, the cross-sectional area of each wedge-shaped structure is gradually reduced from the side, close to the corresponding side plate to the other side, and therefore the bearing capability of the widening parts (3) is improved. By means of theprefabricated box culvert structure with the widened top, the passage area for material transportation can be increased, and the construction progress is ensured.

The invention provides a garbage truck recycling device. The garbage truck recycling device comprises an L-shaped middle plate and a connecting hopper, wherein the L-shaped middle plate and the connecting hopper are arranged at the tail of a garbage truck; the height of the L-shaped middle plate is equal to that of a tail baffle of the garbage truck; the connecting hopper comprises a bottom plate,side plates, a first baffle, a first connecting rod and a second baffle; the side plates are positioned on two sides of the bottom plate; the first baffle is arranged between the two side plates andis positioned on the rear side of the bottom plate; the top ends of the two side plates are connected by the first connecting rod; the second baffle is arranged between the top end of the first baffleand the first connecting rod; a first electric retractable rod which penetrates through the tail baffle, is fixed in the garbage truck and can stretch and retract front and back is arranged on the rear side of a vertical section of the L-shaped middle plate; a first rotating motor is arranged at the top end of the vertical section; the first rotating motor is fixedly connected with the first connecting rod through a second electric retractable plate; third baffles are arranged on the left side and the right side of the second electric retractable plate; a second rotating motor is arranged onthe front side of the vertical section; the second rotating motor is connected with a third rotating motor through a third electric retractable rod; and the third rotating motor is connected with thefirst baffle through a second connecting rod.

The invention belongs to the technical field of constructional engineering construction, and particularly relates to a construction method of a beam-slab tower crane foundation structure. The method is used for solving the problems of bearing capacity and safety of the existing tower crane foundation structure. The construction method comprises the steps that 1, supporting columns in a tower cranefoundation structure are constructed, and the supporting columns are distributed at four corners; 2, a bottom film of a supporting beam is paved above the supporting column, binding reinforcing steelbars of the supporting beam, and a tower crane base and connecting pieces thereof are accurately positioned and mounted; 3, a side die of the supporting beam is constructed, and a bottom die of the bearing platform plate is constructed above the supporting beam; and 4, steel bars of the bearing platform plate are bound, concrete of the supporting beam and the bearing platform plate is integrallypoured after mold sealing, and tower crane foundation structure construction is completed. The supporting beams are used as vertical bearing components of the tower crane foundation, the bearing platform plates and reinforcing steel bars on the upper portions of the supporting beams are used for resisting tension together, the material structure consumption of the tower crane foundation is reducedwhile the integrity of the tower crane foundation is guaranteed, and cost is saved. The bearing platform plate is used for providing safety protection for operators below the tower crane foundation.

The invention discloses a welding robot with a positioning function. The welding robot comprises a robot body, a welding wire unwinding roller is arranged at the top of the robot body, a welding assembly is arranged on one side of the welding wire unwinding roller, the welding assembly is composed of a mounting frame, an adjusting device, a swing welding device and a welding gun, the welding gun is arranged at the bottom end of the mounting frame, a tensioner is arranged on one side of the mounting frame, and a frame rod is arranged on one side of the tensioner. The welding gun is placed at the top of a weld joint through the robot body, the welding angle and the precise position of the welding gun are adjusted through the mounting frame and the adjusting device, precise positioning and flexible steering welding of the welding gun are achieved, the welding robot adapts to weld joint welding in various environments, and adjustment operation is facilitated; the swing welding device is arranged, so that a flat annular part reciprocates rightwards and leftwards to realize reciprocating swing of an L-shaped plate, the welding gun can conduct preset swing welding on the weld joint, and the welding requirements of a welding workpiece with the wide weld joint, thick workpiece and wide welding bead requirement are met.

The invention provides a movable hanging basket safety lifeline and building joint protection device. The movable hanging basket safety lifeline and building joint protection device comprises a sliding rail, a sliding assembly and a connecting plate, and the sliding assembly is slidably connected with the sliding rail in the length direction of the sliding rail; and the first end of the connecting plate is connected with the sliding assembly, and a protection pipe used for installing the movable hanging basket safety lifeline is arranged at the second end of the connecting plate. The sliding assembly is slidably connected to the sliding rail in the length direction of the sliding rail, the connecting plate and the protection pipe are driven to move, the movable hanging basket safety lifeline can be protected through the protection pipe, and the movable hanging basket safety lifeline can be driven to move along with the sliding assembly; and the movable hanging basket safety lifeline can move along with the movement of a hanging basket operator, the movement of the movable hanging basket safety lifeline is protected through the protection pipe, the deformation of the lifeline at a knot is reduced, the stress stability is ensured, the movable hanging basket safety lifeline is not damaged, and the effect of prolonging the service life of the movable hanging basket safety lifeline is achieved.

The invention provides a flat mop, which comprises a mop plate (1), wherein a connecting piece (2) connected with a mop rod is movably connected to the mop plate (1), the mop plate (1) comprises a base (11) and a pull plate (12) detachably connected with the base (11), the length of the base (11) is smaller than that of the mop plate (1), and the base (11) is connected with the connecting piece (2). Compared with the prior art, the flat mop of the invention has the characteristics of moderate packaging length, better use stability and more convenience in use.