12results about How to "Avoid demolition" patented technology

The application relates to a permanent and temporary combined loop pipe roof underground excavation construction subway station tunnel arch opening reinforcing structure and a construction method, and belongs to the underground space construction technical field. The structure comprises a temporary support structure and a permanent support structure. The temporary support structure comprises pipe roof lining arranged on the lower sides of loop pipe roofs near the opening area on both sides, and door-shaped support steel frames are arranged under the pipe roof lining and fixed to the bottom of the tunnel. The permanent support structure comprises a loop reinforcing beam, a longitudinal reinforcing beam and pipe roof anchor bars. The longitudinal reinforcing beam is arranged along the cross sections of the loop pipe roofs on both sides of the opening area. One end of the pipe roof anchor bar is implanted into the cross section of the loop pipe roof, and the other end is implanted into the longitudinal reinforcing beam. Loop reinforcing beams are arranged under the two ends of the longitudinal reinforcing beam. The loop reinforcing beam is fixed to the loop pipe roof in the non-opening area through loop reinforcing beam anchor bars. The temporary support structure and the permanent support structure are combined, the tunnel arch structure can be reinforced under the condition of a large opening, a new stable stress system can be formed after the loop pipe roof is partially cut off, and the safety of the tunnel construction is ensured.

A kind of low-pressure casting mould's turnover side mould, including side mould, side mould seat, the side mould is fixedly connected with side mould seat, side mould is used to cooperate with lower mould, upper mould and form cavity, a oil cylinder support is fixedly installed on mould base, the side mould seat is slidably fitted on the slide rail of oil cylinder support, an oil cylinder is fixed on the outside of oil cylinder support, the piston rod of the oil cylinder is hingedly fixed with side mould seat by passing through oil cylinder support, guiding device is arranged on the side mould seat, limiting device is arranged on the oil cylinder support, the position of guiding device and limiting device corresponds, the oil cylinder drives side mould seat to slide, so that guiding device and limiting device contact and form limiting guide structure, realize side mould turnover.

The utility model relates to the technical field of aromatic hydrocarbon solvent rectification, in particular to a high-boiling-point aromatic hydrocarbon rectification heat exchanger which comprises a base, a rotating handle is arranged on one side of the base, a screw rod is installed on one side of the rotating handle, the surface of the screw rod is in threaded connection with a clamping block, and sliding grooves are formed in the two ends of the middle of the upper surface of the base. Sliding grooves are formed in the two sides of the heat exchanger body, sliding blocks are slidably connected into the sliding grooves, clamping grooves are formed in one sides of the sliding blocks, the heat exchanger body is installed at the tops of the sliding blocks, a feeding port is formed in the top end of one side of the heat exchanger body, a discharging port is formed in the top end of the other side of the heat exchanger body, and convex rings are installed on the two sides of the heat exchanger body. A cover plate is connected into the convex ring in a sleeved mode, and vertical frames are installed on the two sides of the outer surface of the convex ring. According to the improved heat exchanger, tedious bolt dismounting and mounting operation is avoided, the dismounting and mounting efficiency of the heat exchanger is improved, meanwhile, the interior of the heat exchanger is easier to clean and maintain, and the distillation efficiency of an aromatic solvent is improved.

The utility model discloses a battery pack and a power utilization device, the battery pack has a first direction, the battery pack comprises a box body, a plurality of battery monomers, a busbar and a flexible circuit board, the box body has an accommodating cavity, and the plurality of battery monomers are arranged in the accommodating cavity and are arranged along the first direction; the busbar is arranged in the accommodating cavity and is conductively connected with at least one battery monomer; the flexible circuit board is arranged in the accommodating cavity; the flexible circuit board comprises a first body, a connecting part and a connecting sheet, and the first body is arranged on one side, connected with the busbar, of the battery monomer; the connecting part is connected with the first body; the connecting part comprises a first bonding pad and a second bonding pad which are arranged along a first direction, and the first bonding pad is conductively connected with the second bonding pad; the connecting sheet is conductively connected with the first bonding pad or the second bonding pad; one end, away from the connecting part, of the connecting sheet is conductively connected with one busbar. The flexible circuit board can be used for many times, and the maintenance difficulty and the maintenance cost of the battery pack are reduced.

The utility model relates to the technical field of fire-fighting smoke exhaust fans, and discloses a fire-fighting smoke exhaust fan convenient to clean. Comprising an air guide pipe and further comprises a telescopic hose arranged on one side of the air guide pipe, and the other end of the telescopic hose is connected with a fan body; by arranging the mounting assembly and the moving assembly, the mounting assembly can drive the telescopic hoses on the two sides of the fan body to be compressed, so that the flanges at the two ends of the telescopic hoses are separated from the flanges at the two ends of the fan body, and meanwhile, the fan body can be horizontally moved to the other side above the bottom plate through the moving assembly after being detached; the fan body is convenient to clean, the cleaning assembly is arranged, when the cleaning assembly is used, the two sides of the blade can be slightly cleaned through the cleaning brush, the blade can be installed in the support to be taken out and independently cleaned, then all the positions of the blade can be conveniently cleaned, the cleaning difficulty of the blade is lowered, and the cleaning dead angle during blade cleaning is reduced.

This invention discloses a wall tie for non-removable external scaffolding, relating to the field of building technology. The wall tie includes a wall-connecting plate in a herringbone shape. A fixing block is fixedly connected to the left side of the wall-connecting plate. Two symmetrical support frames are arranged on the side of the fixing block away from the wall-connecting plate. The two support frames have identical structures and are U-shaped. This wall tie for non-removable external scaffolding avoids safety hazards through installation and does not hinder subsequent construction processes. It effectively prevents workers from removing the wall tie during later wall construction and kitchen / bathroom waterproofing, ensuring a sufficient number and reasonable distribution of wall ties. It also eliminates the common quality problem of sealing wall openings. Traditional wall tie structures require pre-reserved openings during wall construction, leading to high costs and poor results in sealing these openings later, and even causing wall leakage.

This utility model discloses a novel green and environmentally friendly plastic flooring, comprising a plastic board body with multiple interlocking grooves on the bottom. Connectors are installed within these grooves. A first stabilizing layer is installed within the plastic board body, and a connecting layer is connected to the bottom of the first stabilizing layer. An antibacterial and mildew-resistant layer is connected to the bottom of the connecting layer, a decorative layer is connected to the bottom of the antibacterial and mildew-resistant layer, and a wear-resistant layer is connected to the bottom of the decorative layer. This utility model, by setting interlocking grooves and connectors, allows for the interlocking of two plastic board bodies by installing the connector in the interlocking groove of one plastic board body and interlocking the connector with the interlocking groove of another plastic board body. By hammering the surface of the plastic board body, the connector is fully engaged in the interlocking groove, allowing the two plastic board bodies to be spliced ​​together. Disassembly is simple: just pull upwards to separate the interlocking groove from the connector, thus avoiding the need to remove the entire floor and reducing resource and economic waste.

This invention relates to a movable bored pile construction platform and construction method, belonging to the field of bored pile construction technology. The entire construction process involves moving the movable platform as a whole. First, the movable platform is hoisted to the current work surface and supported by temporary support frames located on both sides of the wharf's width. After the current work surface is completed, the movable platform is then moved horizontally along the length of the temporary support frames to the next work surface until construction is complete. This entire construction process avoids the need for multiple stages of erecting and dismantling the steel platform piece by piece, significantly saving costs and improving construction efficiency.

This invention relates to the field of dental implant technology, specifically to a biomedical dental implant precision positioning guide device, comprising a base guide plate and an upper implant guide plate. The base guide plate has an arc-shaped structure and is installed on the side of the patient's missing tooth in the oral cavity. Multiple positioning cylinders are integrally formed on the base guide plate. The base guide plate and the implant guide plate are fixedly connected by a connecting plate. The implant guide plate forms multiple implant openings. An adjustment opening is provided near the outer side of the oral cavity and communicates with the implant opening. A positioning component can be detachably installed in the implant opening. A toothed groove can be detachably installed on the implant guide plate, which cooperates with the side of the patient's oral cavity with the missing tooth to achieve initial positioning. After positioning, the toothed groove is removed, and a guide sleeve is installed in the through hole. The positioning component of this invention achieves X and Y bidirectional precision micro-adjustment control through a slider and four guide rods forming a double guide rod system. A guide sleeve is screwed onto the slider to provide positioning guidance for the drill rod and protect the through hole from damage. The top limits the drill head to prevent the drill rod from excessively drilling and damaging the alveolar bone.

The application discloses a frame plate machine for bridge deck slab laying construction and a construction process thereof, which comprises a track arranged above a laid bridge deck slab; a main frame with counterweight, wherein the bottom of the main frame is connected with a cart running mechanism through a transverse slope adjusting cushion seat; the frame plate machine has the beneficial effects that: the bridge deck slab laying mechanization construction is realized, the construction efficiency is high compared with the crane laying method, and a large amount of cost is saved; compared with the cast-in-place method, a large amount of construction period can be saved, and the quality is easier to guarantee; during heavy load operation, the construction temporary load acts on the vicinity of the upper chord joint of the steel truss beam, the adverse influence on the upper chord of the steel truss beam is minimized, the comprehensive waste of the bridge design can be avoided; compared with the scheme without counterweight, the anti-overturning safety is higher, when the first several bridge deck slabs of a bridge are installed, the anchoring can be avoided by adjusting the number of counterweights, and the construction is more convenient; the frame plate machine has the transverse moving and line transferring function, the removal and installation of equipment during the construction of double bridges and multiple bridges are avoided, and the construction period and cost are saved.

The utility model discloses an overline spliced bridge based on a prefabricated UHPC-T beam structure. The overline spliced bridge comprises T beams, steel cross beam components, shear key components and transverse prestressed tendons. The bottom of the T-beam is arranged on an abutment through a bridge support and comprises a web plate and a wing plate; the steel cross beam component is used for connecting and fixing the adjacent T beams, so that the adjacent T beams are connected into a whole to improve the structural strength and stability, the steel cross beam component comprises a pre-buried connecting seat pre-buried in a web and a steel cross beam, and the two ends of the steel cross beam are fixed to the pre-buried connecting seat of the adjacent T beams through high-strength bolts; the shear key component comprises key teeth and key grooves which are arranged on the two sides of the wing plate, and the key teeth of the adjacent T beams are embedded in the key grooves. The transverse prestressed tendons penetrate out of the wing plates to be tensioned, and the multiple T-beams are connected into a whole. According to the overline spliced bridge, the modularized UHPC-T beams are adopted, the structural height is reduced by means of the ultrahigh mechanical property of UHPC, and the overline spliced bridge adapts to the condition that the clearance under the bridge is limited; the shear keys are matched with the steel cross beams to replace a traditional cast-in-place wet joint and cross beam technology, old bridges do not need to be dismantled, the longitudinal section of a road does not need to be lifted, and the construction period is remarkably shortened.

The utility model belongs to photovoltaic module bird damage prevention technical field, and disclose a kind of bird damage prevention protective net mounting rack for photovoltaic module, including mounting rack body, the top of mounting rack body is connected with twelve support rods, the surface of each support rod is slidably connected with fixed rod, the top of every six fixed rods is connected with top rod, the inside of two top rods is screw-connected with ten mounting bolts, the surface of each fixed rod is connected with connecting rope, the utility model is conveniently screwed into the corresponding thread groove of top rod by mounting bolt with bird damage prevention protective net, it is convenient to fix bird damage prevention protective net with top rod, and the connecting rope of cooperation arrangement is convenient to bind bird damage prevention protective net on fixed rod and top rod, by setting up bird net, there is no need to set up power equipment long time work to swing bird, auxiliary save power resource, and effectively avoid the situation that birds stay on photovoltaic module leads to photovoltaic module to appear scratch or appear bird shelter and affect use.