10results about How to "Tight seams" patented technology

The invention provides a construction method of a prefabricated multi-ribbed cavity floor, and belongs to the technical field of prefabricated multi-ribbed plate construction. The construction method of the prefabricated multi-ribbed cavity floor comprises the steps of full-hall scaffold building, main keel laying, overall leveling and the like. The construction method comprises the steps that S1, full-hall scaffold building is conducted, specifically, when a full-hall scaffold is built, vertical rods on the upper layer and the lower layer are required to be aligned, the vertical rods are uniformly arranged from the two sides of a cast-in-place ribbed beam, the vertical rods are arranged at the intersection positions of floor elastic bidirectional lines, and scaffold boards are laid under the vertical rods; S2, main keels are laid, specifically, when the main keels are installed, the main keels are required to be arranged in order and not to be inclined, and the two vertical rods at the intersection positions must abut against the main keels; and S3, overall leveling is conducted, specifically, after the main keels are laid, overall leveling is conducted according to control lines, and full-hall scaffold formworks are hoisted on the main keels. The cavity formworks are supported by placing the modularized cavity formworks which are machined and formed in a factory-like mode, and accurate and rapid installation of an upper plate of the prefabricated multi-ribbed plate is achieved by installing limiting square pipes.

The utility model provides a kind of formwork for station internal stand column diameter expansion construction, including steel hoop assembly and wooden formwork assembly;The wooden formwork assembly includes two semicircular templates, and two semicircular templates are formed into a whole circle by surrounding and splicing;The template includes melamine board layer, plywood layer, support batten layer and assembled batten layer from inside to outside in turn;The melamine board layer and plywood layer are fixed by adhesive method, for making the template inner surface even;The support batten layer is arranged around the outer periphery of the plywood layer by adhesive method, for whole circle support;The assembled batten layer is wrapped outside support batten layer for constraining the overall shape of the template;The steel hoop assembly includes a pair of semicircular steel hoops arranged in pairs, a pair of semicircular steel hoops are used for locking outside wooden formwork assembly, and each steel hoop assembly is arranged equidistantly along the length direction of wooden formwork assembly.The template has the advantages of improving construction efficiency and ensuring the appearance quality after stand column diameter expansion.

The present invention discloses a special carriage automated production system, which mainly relates to the field of carriage plate spot welding process. It includes a tooling unit, a pressing unit, and a welding unit. The tooling unit includes a processing table that supports a workpiece of a carriage plate with a frame. A fixed processing station and a positioning mechanism are set on the processing table. The pressing unit includes a straight-line hoisting frame and a lifting seat installed for lifting. A frame that can swing and unfold to both sides is installed below the lifting seat. A rotatable pressure wheel is installed on the frame, and the top surface of the carriage plate is pressed by the pressure wheel. A pressure regulating spring is set on the pressure wheel. The large spring obtains a variable downward pressure during the swing of the frame. The welding unit is located on both sides of the processing table to realize automatic welding. The beneficial effect of the present invention is that it can have the action of pushing the carriage plate from the middle to both sides before spot welding, and the pressure and pushing force gradually increase, so as to obtain a spot welding workpiece with uniform seams, avoiding uneven contact and deformation.

The present invention discloses a track cam thread hooking device and a chain sewing machine, the track cam thread hooking device comprises a machine base, a track cam mechanism is movably provided on the machine base, a rocker and an eccentric member are respectively hinged on the follower of the track cam mechanism through two connecting rods, a connecting shaft is fixedly provided on the rocker away from the corresponding connecting rod end, the connecting shaft is slidably connected with the eccentric member, the eccentric member is eccentrically arranged on the machine base and its eccentric shaft is perpendicular to the connecting shaft, the connecting shaft movably passes through the machine base and a needle plate seat is fixedly sleeved at its end. The track cam thread hooking device of the present invention controls the hook needle seat to swing forward, backward, left and right through the track cam mechanism, simplifies the mechanical structure, is easy to maintain and adjust, and accelerates the swinging speed. The track cam thread hooking device is applied to the chain sewing machine, so that the hook needle and the machine needle move synchronously, and cooperate with the upper and lower presser feet and the feed dog to synchronously feed the material, and has the characteristics of high matching accuracy and simple structure.

The utility model provides a fabricated ceiling plate connecting system. Comprising an assembly type suspended ceiling plate, and a step notch is formed in the side edge of the assembly type suspended ceiling plate; the buckle connecting piece comprises a lower hanging edge, a middle edge rib and an upper hanging hook, the lower hanging edge can be inserted into the step notch of the assembly type suspended ceiling plate and is attached to the assembly type suspended ceiling plate, and the middle edge rib can be attached to the back face of the assembly type suspended ceiling plate; the lower part of the triangular hooking keel is provided with at least one pair of lower turning hooks which are turned inwards, and the lower turning hooks can be buckled with the upper hooks of the buckle connecting pieces; the lower portion of the U-shaped hanging piece is provided with a triangular groove matched with the triangular hooking keel in shape, and the upper portion of the U-shaped hanging piece can be connected with a ceiling keel lead screw. And the ceiling joist screw rod is used for fixing and hanging the U-shaped hanging piece on an upper supporting structure of a ceiling. By optimizing the structural design, tight seam splicing and firm installation between the suspended ceiling plates are achieved, meanwhile, a single block is allowed to be rapidly disassembled, replaced or maintained, and the attractiveness of the overall appearance of the suspended ceiling is improved.

The utility model relates to the technical field of mineral wool boards, and discloses a mineral wool board capable of preventing dust from flying out, which comprises a mineral wool board body, the mineral wool board body comprises a first board body, a second board body and a protective shell, a reinforcing board is fixedly arranged on the opposite sides of the first board body and the second board body, and the protective shell is arranged on the reinforcing board. A plurality of fixing nails are fixedly arranged on the opposite sides of the first plate body and the second plate body, wrapping cloth is arranged on the opposite sides and the peripheries of the first plate body and the second plate body, a protection plate is fixedly arranged at the upper end of the protection shell, and a first clamping block is fixedly arranged in the middle of one end of the protection shell; a second clamping groove is formed in the middle of the other end of the protective shell, and first clamping grooves are formed in the upper side and the lower side of one end of the protective shell. According to the mineral wool board, internal short fibers and dust can be blocked by the mineral wool board, harm to the health of personnel due to the fact that the short fibers and the dust fly out is avoided, and the strength and the tightness of connection between the boards can be improved by the mineral wool board.

The invention discloses an autoclaved aerated fiber anti-crack concrete ALC plate connection construction method, and relates to the technical field of ALC plates. Performing shaping production and maintenance on the autoclaved aerated fiber anti-crack concrete ALC plate; the ALC board is typeset in advance, and the bottom is subjected to bedding; a special binder is smeared on the side face; the prestressed tendons of the first ALC plate are subjected to strand pulling and anchoring; the tops of the ALC plates are fixed by mounting hardwood wedges; the adjacent ALC plates are transported in place, and bedding is conducted at the bottoms; pre-stressed tendons penetrate through the ALC plate; a special binder is smeared on the side faces of the adjacent ALC plates; the ALC plate is installed and fixed, and the top of the ALC plate is wedged and fixed; mounting and fixing to a constructional column in the same manner; prestressed tendons of the LC plates are tensioned and anchored; plate joints and top seals of the ALC plates are sealed and blocked; the ALC plate is compacted and grouted; and maintaining. According to the construction method, the problems that in a traditional construction method, abutted seams between the plates are not tight, and cracking is caused due to different material shrinkage performance between the plates and the frame columns and the frame beams are solved.

The utility model discloses a composite runner brick, and relates to the technical field of composite runner bricks, the composite runner brick comprises a runner brick main body, the two end parts of the outer wall of the runner brick main body are provided with mounting slots, and the mounting slots are internally provided with detachable mounting mechanisms; right-angle plates fixed to a mounting mechanism are arranged on the side walls of the two ends of the runner brick body, hexagonal nuts are fixedly arranged on the inner sides of the right-angle plates located at the ends of the runner brick body, and T-shaped screws are movably connected to the inner sides of the right-angle plates located at the other ends of the runner brick body in an inserted mode. According to the runner brick disclosed by the utility model, the mounting slots are formed in the runner brick main bodies and the mounting mechanisms are arranged in the mounting slots, so that when two runner brick main bodies are spliced, the two adjacent runner brick main bodies can be tightly pressed through the right-angle plates, the hexagon nuts and the T-shaped screw rods between the two adjacent mounting mechanisms; and the splicing seam between the runner brick main bodies is tighter, so that the use quality is improved.

The utility model relates to the technical field of building construction, in particular to a rolling tool used for assisting in bonding the lap joint portion of waterproof coiled materials, which comprises a movable frame, a rolling processing mechanism is arranged in the movable frame and used for assisting in pressing after the coiled materials are in lap joint, and the rolling processing mechanism comprises a rolling wheel rotationally connected in the movable frame. The number of the rolling wheels is two, the top of the movable frame is provided with a driving assembly used for driving the rolling wheels to rotate, and the interior of the movable frame is movably connected with a mounting block located between the two rolling wheels. According to the rolling tool for assisting in bonding the lap joint part of the waterproof coiled material, the rolling wheel can be driven to automatically operate through operation of the motor, so that the movable frame automatically moves, the rolling work is convenient and labor-saving, and the working efficiency is improved; meanwhile, the rolling wheel can be used for repeatedly extruding the coiled material, so that tight joints and firm bonding are guaranteed; the scraping plate can abut against protrusions, caused by water bubbles, on the coiled material along with movement of the movable frame, and the effect of eliminating the water bubbles is achieved.

The utility model discloses a building aluminum formwork abutted seam structure which comprises a first aluminum formwork, a second aluminum formwork, a fixing clamping piece and a clamping block, the second aluminum formwork is arranged on one side of the first aluminum formwork, and the clamping block and a clamping groove are arranged on the two sides of the first aluminum formwork and the two sides of the second aluminum formwork respectively. Fixing clamping pieces are evenly clamped into the upper portion of the connecting position of the first aluminum formwork and the second aluminum formwork, limiting grooves are evenly formed in the two sides of the interior of the first aluminum formwork and the two sides of the interior of the second aluminum formwork, reserved grooves are formed in the two sides of the interior of the fixing clamping pieces, and movable plates are evenly arranged in the reserved grooves through elastic pieces. And limiting blocks are arranged on the sides, close to the limiting grooves, of the movable plates. The first aluminum formwork, the second aluminum formwork, the clamping blocks, the clamping grooves and the fixing clamping pieces are installed, a physical barrier is formed through a concave-convex meshing structure, abutted seams are kept tight, the slurry leakage rate is reduced, meanwhile, bolts and tools do not need to be used, and the installation efficiency is improved.