75results about How to "Improve tensile capacity" patented technology

A double shouldered high torque resistance threaded connection for drill stem components having enhanced resistance to torque forces, tensile loads and material stress and fatigue is disclosed. The tool joint is provided with threads having a 75 DEG included angle between the thread flanks thereof and with generally elliptical root surfaces to minimize material stress and fatigue during operation under high torque and high tensile loads. When made up, the double intrerengaging shoulders of the threaded tool joint are in firm face to face engagement permitting torque forces and tensile loads to propagate through the tool joint in a manner that minimizes bending forces and minimizes high stress concentration so that the resulting service life of the tool joint is significantly enhanced.

The invention discloses an anti-seismic prefabricated concrete solid square pile which comprises main reinforced bars, hoop reinforcements, anchoring bars, pile caps and concrete. A cross section main body of a pile body is square; the main reinforced bars are formed by sequentially permutating and combining prestress main reinforced bars and general main reinforced bars and penetrate through the pile body along the longitudinal direction of the pile body; the hoop reinforcements are arranged on the outer edges of the main reinforced bars and are spirally squared; the pile caps are respectively arranged at two ends of the pile body and consist of end plates and skirt edges; the main reinforced bars and the hoop reinforcements are connected by welding or binding to form a steel reinforcement cage; two ends of the prestress main reinforced bars are fixedly arranged on the end plate by riveting or using a bolt connecting mode; the general main reinforced bars are separated from the end plate and are shorter than the prestress main reinforced bars; and the anchoring bars are respectively arranged at two ends of the pile body. The anti-seismic prefabricated concrete solid square pile with the structure simultaneously has high press bearing capacity, tensile bearing capacity, shear bearing capacity and flexural bearing capacity and is a concrete solid square pile suitable for industrial mechanical production and is used for high seismic fortification intensity.

The invention relates to a recovery type anchor bar, comprising an outer sleeve steel pipe, a screw rod disposed in the outer sleeve steel pipe along the axial direction, an upper cover board fixed on the top of the outer sleeve steel pipe, a regulation nut disposed at center of the upper cover board, a lower cover board fixing on the bottom end of the outer sleeve steel pipe, an anchor cone disposed right under the lower cover board, and a plurality of upper connection boards disposed on bottom end of the lower cover board, wherein the upper portion of the screw rod is attached to the regulation nut through a screw thread, the lower portion of the screw rod is attached to the anchor cone. Each upper connection boards is hinged to the top of an upper pulling rod, bottom end of each upper pulling rod is hinged to the top of a lower pulling rod, bottom end of each lower pulling rod is respectively attached to the anchor cone through a pin. Object of the invention is to provide a recovery type anchor bar which is high in shearing resistance capacity, underground space saving, underground environment pollution-free, and steel saving.

The invention discloses a conical pipe anchor bar connection structure for a prefabricated assembly structure, and belongs to the field of prefabricated assembly engineering. The connection structurecomprises a conical pipe, a grouting guide pipe and a fixing circular ring. The conical pipe is of a pre-embedded structure, the conical pipe can achieve a restraint effect on steel bars and groutingmaterials in the conical pipe, and meanwhile the tension capacity of the conical pipe in concrete can be improved. Frame vertical ribs and tie bars in a prefabricated bearing table also achieve a restraint effect on cracking of the bearing table or foundation concrete caused during pulling of the conical pipe. In prefabricated components, a conical pipe group is connected with the surrounding frame vertical ribs and the tie bars, and therefore the anchor performance of the conical pipe group can be improved. The steel bar anchorage length needed by the conical pipe anchor bar connection structure is small, the conical pipe anchor bar connection structure can be used for connection between a reinforced concrete structure prefabricated assembly component and a foundation or the bearing table, and rapid building of the prefabricated assembly reinforced concrete is achieved.

The invention discloses a swing column-hybrid limb-connected wall structure capable of restoring after being damaged in an earthquake and an assembly method. According to the swing column-hybrid limb-connected wall structure capable of restoring after being damaged in the earthquake and the assembly method, a reinforced concrete wall only generates a bending moment and shear force, axial force generated at the bottoms of wall limbs under the coupling effect is avoided, the energy dissipation requirement for a reinforcing region at the bottom of a shear wall is effectively lowered, damage to the wall limbs can be controlled more easily, the original axial force of the wall limbs is transferred to swing columns on the two sides, brittle shear damage to the wall limbs of the reinforced concrete wall under tension can be effectively avoided as long as the stability of the swing columns can be guaranteed under stress, and force transmission is simple and reliable. According to the swing column-hybrid limb-connected wall structure used as a first defense line for earthquake fortification, a steel coupling beam is good in ductility and high in energy dissipation capacity; a joint connection manner beneficial to replacement is adopted, so that disassembly is easy, and operation is simple; all fixing parts are of a detachable structure and can be re-spliced and re-connected after the energy-dissipation coupling beam is replaced, so that construction and post-earthquake consolidation are made very convenient.

The invention discloses a stereoscopic pocket and a making method thereof. The stereoscopic pocket comprises a pocket body. The pocket body comprises a rectangular main cut-part and side cut-parts. One lateral edge of each side cut-part is sewn to three edges of the main cut-part, and the other lateral edge of the each side cut-part is sewn to a garment piece. Welts are arranged at the joints of the main cut-part with the side cut-parts and on the other sides of the side cut-parts respectively. The making method includes the steps of firstly, cutting to obtain the main cut-part and the side cut-parts, overlapping the main cut-part and the side cut-parts with right sides facing, and making the welts along edges; secondly, making the welt at the other lateral edge of each side cut-part; thirdly, making a welt at a pocket opening; and fourthly, allowing the right side of the bag body to face outward, and sewing the edges of the side cut-parts to the garment piece. The pocket is in stereoscopic structure, capable of bearing and holding weights without hurting human bodies and attractive in appearance. The making method is simple and practical, and the stereoscopic pocket can be made by the method while the pocket can bear larger weight.

The invention discloses a windproof reinforcing device for a mobile workshop. The windproof reinforcing device comprises a connecting mechanism, a cable and a ground anchor, the connecting mechanism is fixedly connected onto a steel column on the upper inner side of the mobile workshop, a first cable connecting device of the connecting mechanism penetrates through a wall surface composite plate of the mobile workshop to protrude out of the wall surface of the mobile workshop, the ground anchor comprises a second cable connecting device and a cavity provided with a strip hole, the cavity internally comprises a fixed plate provided with transmission teeth and a rotating rod provided with a gear, the gear is meshed with the transmission teeth, and the rotating rod can drive the fixed plate to protrude out of the cavity or retract into the cavity along the strip hole. The windproof reinforcing device for the mobile workshop has the advantages that the connecting mechanism is fixedly connected onto the steel column on the upper inner side of the mobile workshop, the first cable connecting device of the connecting mechanism penetrates through the wall surface composite plate of the mobile workshop to protrude out of the wall surface of the mobile workshop, the ground anchor is buried underground outside the mobile workshop, and the first cable connecting device is connected with the second cable connecting device of the ground anchor through the cable, so that the mobile workshop is stabilized.

The invention discloses a multifunctional long foundation bolt. The multifunctional long foundation bolt comprises a deeply-buried portion, a hook and a nut, the deeply-buried portion is provided with a cylindrical head, a neck and a tail, a first external thread is arranged on the head of the deeply-buried portion, the neck of the deeply-buried portion is located between the head and the tail of the deeply-buried portion, a second external thread is arranged on the tail of the deeply-buried portion, a first curved arm and a second curved arm are arranged on the hook and arranged in an L shape, a first internal thread which is matched with the first external thread is arranged at the tail end of the first curved arm, and a second internal thread which is matched with the second external thread is arranged on the nut. By the aid of the method, the multifunctional long foundation bolt integrates a plurality of installation and dismounting functions and is simple to operate, flexible to use, high in tensile bearing capacity and small in occupied space.

The invention provides a water supplement and drainage control method for a hanging board and sunshade board combined support slope greening structure. The water supplement and drainage control methodinvolves a hanging board fixed to a slope, the hanging board is anchored to the slope through a plurality of anchor rods, a sunshade board is anchored to the top of the slope, a plurality of groovesare formed in the hanging board, and water storage tanks are installed at the positions of the grooves. A water supplement and drainage pipe penetrates into the hanging board and is communicated withthe water storage tanks, the sunshade board comprises two metal boards with holes, and the two metal boards are arranged on the top layer and the bottom layer respectively; a pressure plate is fixed to the inner side wall of the metal board on the top layer, springs are fixed to the bottom of the inner wall of the pressure plate, the bottoms of the springs are fixedly provided with an opening-closing plate, and the bottom of the opening-closing plate is provided with the metal plate on the bottom layer; soft water drainage pipes are communicated between the pressure plate and the opening-closing plate. The water supplement and drainage control method has the advantages that construction is convenient, fewer damage factors exist, water drainage and supplement can be facilitated, and later maintenance is facilitated and reduced.

The invention discloses a special drill bit for a tapered hole and an application method of the tapered hole. The special drill bit for the tapered hole consists of a drill handle, a blade face, a positioning ring and a flexible limit ring, wherein the drill handle and the blade face are integrated as a whole; the positioning ring and the flexible limit ring which are also integrated as a whole are sleeved on the drill handle; the included angle formed by the outer line of the blade face and the axial line of the drill bit is an acute angle; and the blade face is embedded with a semi-spiral blade edge, and the top end of the blade edge is a blade tip. The application method comprises the following steps: (1) pressing an expansion type special anchor bolt with a nylon sleeve into a tapered anchor bolt hole, so that the geometry formed after expansion of the expansion type special anchor bolt is matched with the tapered anchor bolt hole, and the surface of the anchor bolt can be tightly combined with the tapered hole to achieve anchoring effect; (2) drilling an opening on the root part of a required rib, inserting the rib into a tapered bar planting hole, expanding the opening of the rib with a wedge to form a tapered shape, and injecting anchor adhesive, so that the bar planting surface and the tapered hole can be tightly combined after solidification. The tapered hole drilled by the drill bit of the invention can significantly improve the anchorage strength and the bar planting solidity, and greatly enhance the pre-tightening force, bearing capacity, pull-out resistance and tensile bearing capacity of anchors or planted bars.

The invention belongs to a building structure member, particularly relates to a steel-concrete combination structure support member, and provides a steel tube fiber concrete support. The steel tube fiber concrete support is used for solving the problem that a frame structure has too large lateral displacement under the horizontal earthquake action and is seriously damaged after the earthquake and overcoming the defect that a steel structure support is large in steel consumption. Concrete mixed with steel fiber or synthetic fiber is poured into a circular steel tube, so that the concrete has certain tension resistance; meanwhile, in order to transmit supporting tension to the concrete inside the steel tube, a short steel tube with a bolt pin effect is arranged in the steel tube. In this way, the steel tube concrete support can bear large pressure and tension at the same time under the horizontal earthquake load action. A building structure with the steel tube fiber concrete support has excellent earthquake resistance and a high material utilization rate, and the advantages of being excellent in mechanical performance, convenient to construct, economical and reasonable can be fully exerted.

The invention provides a tensile shielded cable. The tensile shielded cable is characterized by comprising conductors (1), wherein an insulating layer (2) coats the outside of each conductor (1); an inner shielding layer (3) coats the outside of the insulating layer (2); the inner shielding layer (3) is a copper wire and copper strip composite shielding layer; the copper wire and copper strip composite shielding layer comprises a plurality of soft round copper wires and copper strips coating the outside of the copper wires; an asphalt layer (6) coats the outside of the inner shielding layers (3); a steel wire layer (5) is arranged in the asphalt layer (6); a refractory layer (7) coats the outside of the asphalt layer (6); an outer sheath layer (8) coats the outside of the refractory layer (7); the steel wire layer (5) is surrounded by a plurality of steel wires to form an enclosed roundness; a filler (4) is arranged in a gap between the inner shielding layers (3) and the asphalt layer (6); and the outer sheath layer (8) is made of radiated cross-linking polyolefin or radiated cross-linking ethylene-propylene rubber.

The invention relates to the technical field of oil field oil extraction, in particular to a mechanical-hydraulic integrated releasing device. The mechanical-hydraulic integrated releasing device comprises an upper joint, a lower joint and a pawl. The upper joint and the lower joint are connected to the two ends of the pawl correspondingly. A releasing sleeve capable of moving in the axial direction of the pawl is arranged on the outer side of the pawl in a sleeving manner. A step is arranged on the outer wall of a ratchet of the pawl. A groove matched with the step is formed in the inner wall of the releasing sleeve. The step and the groove cooperate to limit the pawl. A releasing sleeve upper end is arranged between the releasing sleeve and the upper joint, one end of the releasing sleeve upper end is inserted in the releasing sleeve, and the other end of the releasing sleeve upper end is arranged on the outer portion of the upper joint in a sleeving manner and connected with the upper joint through a start pin. A pressure cavity is formed between the upper joint and the releasing sleeve upper end, a hydraulic cavity is formed in the upper joint, and two pressure transmission holes communicating with the pressure cavity are symmetrically formed in the side wall of the hydraulic cavity in the radial direction. According to the mechanical-hydraulic integrated releasing device, the problems that in the prior art, a mechanical releasing device is poor in resistance to tension, and the reliability of a hydraulic releasing device is not high are solved.

The invention relates to the field of beam bridge construction and discloses a steel beam segment. The steel beam segment comprises a left part and a right part. A gap formed in an opposite-pulling manner is formed between the left part and the right part. The left part and the right part are connected in a welded manner. A continuous combined beam bridge comprises two abutment piers and at least one middle pier located between the two abutment piers. The pier top of the middle pier is provided with the steel beam segment. Multiple combined beam segments are arranged on the two sides of the steel beam segment. A construction method of the continuous combined beam bridge includes the following steps that firstly, the steel beam segment formed by splicing the left part and the right part is provided, the left part and the right part of the steel beam segment are connected through bolts, and the bolts are tensioned; secondly, the combined beam segments are installed on the two sides of the steel beam segment till a steel beam is closed; and thirdly, the bolts on the steel beam segments are loosened gradually, and the left part and the right part of the steel beam segment are welded. By the adoption of the steel beam segment, the continuous combined beam bridge, and the construction method of the continuous combined beam bridge, the working performance of a concrete bridge panel can be greatly improved.

The invention discloses a grouting structure and grouting method for enhancing pulling resistance of a pile foundation after self-balance detection. The structure comprises an upper steel reinforcement cage and a lower steel reinforcement cage, and further comprises a loading and guide device. A loading cavity and a guide cavity are formed in the loading and guide device and are connected with a loading cavity grouting pipe and a guide cavity grouting pipe correspondingly. An outer cavity formed among the outer portion of the loading and guide device, the upper steel reinforcement cage and thelower steel reinforcement cage is connected with an outer grouting pipe. The grouting method comprises the steps that a, the loading and guide device with the loading cavity and the guide cavity is buried in the pile foundation; b, grout is injected into the loading cavity through the loading cavity grouting pipe, and self-balance detection of the pile foundation is carried out; c, after detection is completed, grout is injected into space formed between the upper steel reinforcement cage, the lower steel reinforcement cage and the loading and guide device through the outer grouting pipe; andd, grout is injected into the guide cavity through the guide cavity grouting pipe. According to the grouting structure and grouting method, the uplift bearing capacity and the overall structural strength of detected piles are obviously improved.

The invention discloses non-anchor-rod type multifunctional embedded box iron and an anchoring and installing method. The embedded box iron comprises a groove body and a main slide groove arranged onthe groove body. The embedded box iron is embedded and anchored in concrete through waist narrowing structures on the two sides of the groove body. A groove opening of the main slide groove is narrowed on the two sides, and a narrowed force bearing pat is formed at the groove opening. Antiskid teeth are arranged on the inner side of the force bearing part. A T-shaped slide groove is formed in theinner top of the main slide groove and can be split. An auxiliary slide groove with a conical section is formed in the inner top of the main slide groove, an auxiliary slider matched with the auxiliary slide groove in section shape is arranged in the auxiliary slide groove. A T-shaped slide groove is formed in the side, close to the groove opening of the main slide groove, of the auxiliary slider.A T-shaped bolt, a fastening nut, a fixing nut, a single-end bolt, a toothed butterfly-shaped gasket and a toothed butterfly-shaped nut are selected to be fixedly installed according to different load requirements of installation assemblies. The embedded box iron is low in installation cost, the tensile performance, longitudinal shearing performance and fatigue performance are greatly improved, the overall channel anchoring force is consistent, and the overall channel stability is improved.

The invention discloses a manufacturing method of twistless fabric and a product thereof. The method comprises the following working procedures: using a fibre rod prepared by medium staple fibre and staple fibre; taking the fibre rod as wrap and weft yarn after wrapped by Vitron; and dyeing, warping, starching, weaving and tidying according to design of pattern and flower color, wherein the weight ratio of Vitron yarn for wrapping to fibre rod body is within 10-35%, the tension at the time of beaming is not more than 8-13% of warp breaking tenacity, and weaving machine speed at the time of weaving is 15-20% lower than speed for weaving the traditional twisted fabric.

The invention discloses a method of reinforcing low-strength concrete beams and slabs. The method includes: dividing a beam-slab, to be reinforced, into two parts, namely a pull region and a stress region; subjecting the stress region to reinforcement by dry-mixed self-compacting concrete replacement; cleaning the surface of concrete of the pull region, and pasting a layer of permeable crystalline compacting agent to enhance concrete 5mm deeper in the surface of the concrete of the pull region, meeting the requirements in standards for the pasting method, and pasting carbon fiber cloth or steel plates to reinforce the pull region. The method has the advantages that the fact that the concrete with the surface pasted permeable crystalline compacting agent has higher compressive strength against concrete structure is well utilized, the structure is reinforced by the original pasting method, the durability problem of low-strength concrete is well solved by making use of compactness and water tightness in the compacting agent, and a substitution method cab be applied to low-strength concrete.

The invention relates to the technical field of medical materials, in particular to a preparation method of an anti-adhesion membrane for preventing and treating myophagus adhesion. The preparation method comprises the following steps: S1, acquiring a fresh amnion; S2, preparing a decellularized amnion; S3, loading the celecoxib; and S4, carrying out freeze-drying treatment. The invention also discloses an anti-adhesion membrane for preventing and treating myophagus adhesion, which is prepared by the method and comprises an acellular amniotic membrane, and a plurality of celecoxib particles are attached to the acellular amniotic membrane. The preparation method has the beneficial effects that according to the prepared anti-adhesion membrane, the amniotic membrane matrix containing various bioactive substances is loaded with celecoxib, so that endogenous healing of tendons can be effectively promoted, and adhesion caused by exogenous healing is reduced.