42results about How to "Not easy to leak slurry" patented technology

The invention relates to an upright post formwork. The upright post formwork comprises four steel formwork bodies and a plurality of fasteners, wherein the fasteners hoop outside the four steel formwork bodies and are arranged in the height direction of the steel formwork bodies, and the adjacent steel formwork bodies are connected by connecting columns with square cross sections; clamping tables extending vertically and outwardly are correspondingly arranged on the side walls of the two sides, correspondingly opposite to the adjacent steel formwork bodies, of the connecting columns, clamping grooves for the clamping tables to be clamped are formed in the positions, opposite to the clamping tables, of the side walls of the sides, opposite to the connecting columns, of the steel formwork bodies, and the shapes of the clamping grooves are matched with the shapes of the clamping tables; a plurality of perforations are formed in the positions, opposite to the clamping grooves, of the outer side surfaces of the steel formwork bodies in the height direction of the steel formwork bodies, and inserting holes which are formed opposite to the perforations in a one-to-one mode are formed in the clamping tables; and the steel formwork bodies are provided with plug pins with the number being matched with the number of the perforations, and the plug pins penetrate through the perforations and are inserted into the inserting holes. The upright post formwork has the advantages that the sealability of the joints of the adjacent steel formwork bodies is ensured, and thus the occurrence of the situation of mud leakage between the adjacent steel formwork bodies is avoided.

The invention discloses a suspension mold for enlarging and reinforcing a concrete beam and a construction method of the suspension mold. The suspension mold comprises a concrete beam and a floor which is arranged on the concrete beam, wherein two sides of the concrete beam are respectively provided with a suspension rod, one end of each suspension rod penetrates through the floor to be fixed, the other end of each suspension rod is fixedly connected with a piece of a vertical square wood, each vertical square wood is provided with a left transverse square wood and a right transverse square wood, each transverse square wood is provided with a template, the template and the concrete beam form a closed grouting space, and the closed grouting space is used for enlarging and reinforcing the concrete beam; the floor is also provided with a grouting hole, and the grouting hole is communicated with the closed grouting space; a beam penetrating screw is also arranged on the concrete beam in a penetrating manner, and two ends of the beam penetrating screw also respectively penetrate through the template to be fixed. By adopting the structure, the stability of the template is reinforced, the pulp is unlikely to leak when the non-shrinkable grouting material is poured, and the deviation of the position of a construction axis caused by the existing of pipeline equipment below or on the side surface of a beam with the enlarged cross section can be avoided.

The invention relates to a construction formwork of a gypsum cast-in-place wall and a construction method of the construction formwork. The construction formwork comprises main-face formworks, side-face formworks, a bottom-face formwork, clamping dies, bolts and inner limiting sleeves, the main-face formworks are used for pouring a gypsum base wall material, the side-face formworks close the main-face formworks during pouring, the bottom-face formwork is used for pouring a waterproof cushion layer material, the clamping dies limit the main-face formworks during pouring, the inner limiting sleeves sleeve the bolts and play a role in limiting during pouring, height of the bottom-face formwork is adapted to that of a waterproof cushion layer, heights of the main-face formworks and the side-face formworks are adapted to that of the wall, and bolt holes used for connecting and positioning are formed in each of the main-face formworks, the bottom-face formwork and the side-face formworks. The construction formwork is supportive of construction of a waterproof layer and gypsum pouring construction sequentially, and gypsum pouring can be completed at one time, so that the construction formwork is high in construction efficiency and less prone to mortar leakage; waterproof protection of the bottom of the gypsum wall is realized.

The invention discloses a device and a method for pouring a concrete continuous wall along a gob-side entry in a mining working face. The shape of the fiber flexible formwork is a cuboid or a cube, and it is composed of a main formwork and a roof formwork. The fiber flexible formwork is connected with flanges, pouring ports, planting ribs, limit holes, and tie bars. The fiber flexible formwork is prefabricated, and the flange hangs the flexible formwork on the coal seam roof through a single hydraulic prop or anchor rod. The ends are fixed with pallet nuts, the concrete delivery pipe is inserted into the filling port and tied, and the concrete pump is used to inject concrete into the flexible formwork through the delivery pipe to form a concrete continuous wall. The structure is simple, the construction speed is fast, the labor efficiency is high, the airtightness is good, the grout is not easy to leak, the concrete filling is dense, the roofing effect is good, the mechanized operation, adapt to the change of the slope of the roof and the floor, widely used in coal mines, metallurgical mines, water conservancy, underground construction , defense and other industries.

The invention relates to a self-compacting concrete aluminum alloy edge-sealing formwork for a ballastless track. The self-compacting concrete aluminum alloy edge-sealing formwork for the ballastless track comprises two end molds, four standard side molds, two adjusting side blocks, four corner formworks, and four inserting boards, which are symmetrically assembled into the quadrilateral self-compacting edge-sealing formwork, wherein the end mold comprises a panel and upper and lower frame plates, a reinforcing rib is arranged in the middle part of the panel to form a groove shape, and the end mold is integrally molded by extrusion once through an aluminum profile extrusion device; the standard side molds and the adjusting side molds are made of square tube aluminum profiles, and are molded by extrusion once through the extrusion equipment, the corner formworks and the inserting boards are made of arc-shaped aluminum profiles, and are molded by extrusion once through extrusion equipment. The self-compacting concrete aluminum alloy edge-sealing formwork for the ballastless track provided by the invention solves the problems of slow turnover of the formwork, fewer use times, easy deformation, easy rusting, formwork swelling and mortar leakage of self-compacting concrete, poor exhaust effect, uneasy installation, great waste of human resources and the like under construction.

The invention relates to a construction method of a concrete arched door and window lintel, and belongs to a civil engineering building construction method, which comprises the following construction steps of: production of templates: 1) production of a bottom template: the bottom template consists of a bottom board and a reinforcing rib board, the middle section of the bottom board is a semi-circular section, the left and right sections of the bottom board are symmetrically downward vertical sections, and the middle of the bottom surface of the bottom board is welded with the reinforcing rib board; and 2) production of side templates: the center of a long bottom side of a rectangular wood board is used as a center of a circle, and the radius of the middle section of the bottom template is used as a radius to be cut into a semi-circular opening; and installation of templates: 1) installation of the bottom template: the left and right vertical sections of the bottom board are correspondingly and fixedly arranged on the wall at the left and right ends of the concrete arched door and window lintel by expansion bolts in accordance with the alignment position, and then a reinforcement cage is placed; 2) installation of side templates: the two side templates and the front and back sides of the bottom template are correspondingly matched, long baseplates are arranged, and split bolts are used to fix the front and back side templates; and pouring of lintel. The lintel is simple and practical, and has an excellent sealing performance.

The invention discloses a middle separation wall top original lining cavity backfilling construction method when a single-hole tunnel is changed into multiple arches. The method sequentially comprises the following steps that a, a middle separation wall is cast; b, an anterior hole is constructed; c, hole slag dug from the anterior hole is used for filling back a cavity arranged at one side of a posterior hole to the digging outline part of the posterior hole; d, a steel bar net is paved on the top of the backfilled hole slag, and then, concrete is sprayed on the surface of the steel bar net; e, an end template is arranged along a tunnel longitudinal frame, in addition, the end template, the surrounding rock and the original lining are fixedly built through lining by using anchor bolts; f, a side template is erected at the digging outline part of the anterior hole; g, concrete is filled and is compactly vibrated and smashed; h, the posterior hole is constructed; i, the original lining of the existing tunnel in the anterior hole and the posterior hole is dismounted. The construction method has the advantages that the original tunnel top cavity backfilling problem is effectively solved, so the pressure of the surrounding rock is uniformly transmitted onto a support protection structure, the stress uniformity and the structure completeness of the lining can be ensured, and the loading capability and the durability are improved.

The invention discloses a concrete hollow square pile centrifugal casting mold, which comprises an upper mold body and a lower mold body. An upper stress-relieved arc is arranged on the inner side of one side of the upper mold body; the inner side of the other side of the upper mold body is a straight side; a lower stress-relieved arc is arranged on the inner side of one side of the lower mold body opposite to the upper stress-relieved arc; and the inner side of the other side of the lower mold body is a straight side. The upper mold body and the lower mold body are closed to be fixedly connected through a locking assembly; a joint of the upper mold body and the lower mold body is formed outside the upper stress-relieved arc and the lower stress-relieved arc; the cross section of a cavityformed by closing the upper mold body and the lower mold body is quadrangular; a plurality of running wheels which make the mold rotate on a centrifugal machine are arranged on the upper mold body and the lower mold body; and a crane hanger for hoisting and a fixing device for preventing the mold from rolling in the process of removing the mold are arranged on the upper mold body and the lower mold body.

The invention discloses a construction method for pouring an airtight partition wall between a recovered roadway and a reserved roadway. The airtight partition wall is formed by an inner concrete single wall, an outer concrete single wall and a middle loess concrete wall; and the airtight structure is provided with three layers of walls: the inner side and the outer side are respectively provided with the airtight single wall which is formed in a way that a concrete pump pours concrete into a fiber flexible template, and the loess concrete wall filled by loess-based materials is arranged between the two single walls. The flexible templates are made in advance according to design requirements; a slot is drilled on a preset airtight surrounding rock connecting the roadways; anchor rods are constructed in the slot; after the flexible templates are hung onto the slot through a single hydraulic prop or the anchor rods, the concrete is successively poured into the inner side flexible template and the outer side flexible template by a concrete conveying pipe and a pouring opening through the concrete pump to form the inner single wall and the outer single wall; and after the inner single wall and the outer single wall are poured completely, the loess is poured between the inner single wall and the outer single wall to form the concrete airtight wall. The structure is safe and reliable, the construction cost is low, the construction speed is fast, the labor intensity is low, and the requirements of mine production with high production and high efficiency are met.