107results about How to "Improve anchoring efficiency" patented technology

The invention relates to a draw-rope used in major construction projects, in particular to an anchor draw-rope formed by compressing a whole bundle of stranded steel ropes and composed of a finished stranded steel rope body and anchor fasteners on the two ends. The anchor fastener is divided into an anchor fastening unit and a sealing unit. The anchor fastening unit comprises a compressing anchorage sleeve, a screw nut and an end cover. Mounting holes for embedding the stranded steel rope in equal number with the compressed stranded steel ropes are drilled inside the compressing anchorage sleeve; the stranded steel ropes are disposed in the mounting holes and compressed with the anchorage sleeve into a whole; main components of the sealing unit includes a sealing cylinder, a sealing ring and antiseptic materials. The end of the compressing anchorage sleeve is provided with external screw thread; one end of the sealing cylinder is sleeved on the end of the compressing anchorage sleeve through the screw thread; the sealing ring and a restraining ring sleeved on the rope body are arranged in sequence inside the other end of the sealing cylinder; a gland bush is screwed on the sealing cylinder through the inner screw thread of the sealing cylinder which is filled with antiseptic materials; a through-slit is opened between the mounting holes for embedding the stranded steel ropes inside the compressing anchorage sleeve. The stranded steel rope in the anchor rope is able to perform firm anchoring, not easy to slip off under high-frequency vibration, small in anchor head volume and low in manufacture cost.

The invention relates to a twice spreading prestressing force anchor tool that can make the middle or short prestressing force tendon take twice spreading. The invention is made up of sole plate, bearing nut, anchor circle and clamping piece. That can anchor fix 1-20 prestressing steel strand and high intension steel bundle. It can be widely used for anchor fixing the prestressing force tendon of road and bridge, railway girder, and so on.

The invention discloses a tensioning and anchoring device for prestressed fiber cloth reinforced beams and a construction method of the device. The device comprises fixed supports, a fixed end anchorage device, a tensioning end anchorage device, clamping pieces, short anchoring screws, long anchoring screws, chemical bolts, fiber cloth, a prestress application frame and a jack, wherein the fixed supports, the fixed end anchorage device and the tensioning end anchorage device are cuboid; the fixed supports are fixed with a to-be-reinforced beam through the chemical bolts; the fixed end anchorage device and the tensioning end anchorage device are connected with the fixed supports through the short anchoring screws and the long anchoring screws respectively; a rectangular through seam allowing the fiber cloth to pass is formed in the fixed end anchorage device; wedge-shaped holes allowing insertion of the clamping pieces are formed in the tensioning end anchorage device, and the clampingpieces are wedged into the wedge-shaped holes, so that clamping of the fiber cloth is realized. The construction method comprises steps as follows: firstly, the anchorage devices are mounted, then thefixed supports are assembled and the anchorage devices are fixed, finally, the prestress application frame and the jack are mounted, and tensioning and anchoring are implemented. The device is reasonable and simple in structure and convenient to operate and can be reused, and the applied prestress is large.

The invention relates to coal mine roadway tunneling machinery, in particular to a fully sealed coal roadway tunneling and anchoring synchronous machine, comprising a tunneling device, a sealing and dust removing device, an anchoring device, a coal loading and conveying device, a power system and a hydraulic system, wherein the tunneling device comprises a body part, a telescopic cutting part arranged at the front end of the body part, a walking part arranged at the lower part of the body part and a rear support part arranged at the rear end of the body part; the anchoring device comprises at least one first anchor rod drill carriage; the first anchor rod drill carriage is arranged between the cutting part of the tunneling device and the power system; other anchor rod drill carriages are arranged behind the power system sequentially; each anchor rod drill carriage comprises a frame, an anchor rod drilling machine group fixedly arranged on the frame, wheels arranged at the four corners of the lower part of the frame and a hydraulic oil cylinder; the body part of the tunneling device is in overlap joint with the two sides of the frame of the first anchor rod drill carriage through a sliding rail and is fixedly connected with a dragging oil cylinder; and the anchor rod drill carriages are hinged with one another. The fully sealed coal roadway tunneling and anchoring synchronous machine is unique in design, reasonable in structure, high in the degree of automation, efficient and safe and is very suitable for extended application.

The invention discloses a fiber reinforced composite rib/cable anchorage which comprises an anchor shell used for anchoring an FRP(Fiber Reinforced Plastic) rib/cable; a conical through hole is coaxially arranged inside the anchor shell; the fiber reinforced composite rib/cable anchorage is characterized in that a sleeve assembly which matches with the conical through hole and is equipped with the FRP rib/cable is embedded in the conical through hole; a seal cap is fixedly arranged at the end part of the anchor shell; and the diameter of the conical through hole increases from the free end to the load-bearing end of the anchor shell. The fiber reinforced composite rib/cable anchorage has the advantages that the stress of the anchoring area is fundamentally changed and tends to be more reasonable; the size of the anchorage is greatly reduced; the stress on the surface of the FRP rib/cable at the anchoring area increases from the load-bearing end to the free end, so the damage caused by centralized stress at the surface of the FRP rib/cable at the load-bearing end can be avoided; the peak value of the binding powder between a binding medium in the anchoring area and the binding interface of the FRP rib/cable comes out at the free end, so the anchoring efficiency is greatly improved, with the anchoring efficiency coefficient reaching 100%; and the fiber reinforced composite rib/cable anchorage has good durability.

The invention discloses a large-tonnage FRP stay cable anchoring method. The method comprises steps: forming a taper variable stiffness load transmission medium on a FRP stay cable anchoring region, wherein the variable stiffness load transmission medium being formed by fiber yarns which are winded along a length direction of the FRP stay cable anchoring region in a segmented manner through mouldpressing, heating, and solidifying, using fiber yarns in different kinds in different segments, to form variable stiffness load, the fiber yarns being soaked by resin before being winded; along an axial direction of the variable stiffness load transmission medium, cutting a plurality of kerfs; using a taper anchorage device matched with the taper variable stiffness load transmission medium to anchor. The anchoring method is advantaged by simple manufacturing, easy control, good coordination force property, high anchoring efficiency, continuous variation of load transmission medium stiffness, and more uniform load transmission medium stiffness. Fiber content and transverse stiffness of the variable stiffness load transmission medium gradually increase from a loading end to a free end, to relieve or eliminate notch effect of the loading end of the FRP stay cable, and prevent lateral shearing damages from preceding tensile damages of the large-tonnage FRP stay cable caused by stress concentration.

The invention discloses a tensioning and anchoring device of a prestressed CFRP plate reinforced beam and a use method thereof. The device comprise a CFRP plate, an anchoring assembly and a tensioningassembly; the tensioning assembly comprises tensioning sliding chambers, a second clamp, a fixed plate and a tensioning mechanism; and the contact surfaces of a telescopic plate and the second clampare provided with sawteeth facing oppositely. According to the device and the method, two groups of clamps fixedly clamped at two ends of the CFRP plate are installed in two groups of sliding chambersto apply the prestress, so that the eccentric tension can be prevented, the self-locking of the CFRP plate after the prestress is applied is realized through the mutual matching of the sawteeth between the telescopic plate and the second clamp, and the retraction of the CFRP plate is limited. The CFRP plate is mechanically clamped through the clamps, the anchoring efficiency is high, the qualityperformance is stable, and the high-strength performance of the CFRP plate can be fully exerted. After the prestress is applied, a jack can be dismantled, the design is integrated, the operation process is simple and convenient, and the working efficiency is improved.

The invention relates to a steel strand jacking force measuring device that includes strain meter, two inner sleeves, two outer sleeves and round steel. The two inner sleeves movably connect, and has round hole in center. The round steel is locating in the hole. Two ends of round steel have protuberance, whose diameter is larger than that of the hole. Strain gauge is stuck on round steel. The wire connects to strain gauge through the hole on inner sleeve. And the two ends of inner sleeve connect to the two ends of outer sleeve. Hole used for passing through steel strand is set in the center of sleeve. Cone cavity is set at the back of hole. And cutting off the steel stand, it could be connected to the cone clamping piece in cavity. The strain gage and steel strand is on the same axis. The invention has high accuracy, safety and reliability. It could realize monitoring the whole process of the pulling and using of the steel strand.

The invention relates to an anchoring method of a flat cross section of a carbon fiber composite reinforcement material. The anchoring method is characterized in that the carbon fiber composite reinforcement material is locally heated and softened at a part close to the tail of an anchorage device, when the temperature of the carbon fiber composite reinforcement material is close to the solidifying temperature of the reinforcement material, the heated part is rolled to be flat by a tool, the reinforcement material is subjected to four-times rolling, the rolling is respectively carried out two times in the orthogonal direction and the vertical direction of the reinforcement material, and after cooling, the rolled part is solidified again; after the reinforcement material passes through location holes of an end plug and a sealing cover, the anchorage device is vertically placed, the end plug is moved away, and an epoxy resin mortar anchoring filler is poured into the anchorage device from the small end of the anchorage device, after the anchorage device is filled with the filler, the end plug is put at an original location, and after the anchorage device is vertically placed for one day and the epoxy resin mortar anchoring filler is solidified, the glue pouring and solidifying of the other end are carried out. The anchoring method has the advantages that the local surface of the carbon fiber composite reinforcement material can be rapidly and conveniently flattened, the contact area between the reinforcement material and the epoxy resin mortar anchoring filler is enlarged, the mechanical bite force is generated, the anchorage bonding length is reduced, and meanwhile, the reinforcement material is prevented from slipping off from the anchoring filler.

The invention discloses a large-tonnage carbon fiber superimposed plate bundle anchorage including an anchorage tube and a carbon fiber fixing plate bundle; the anchorage tube is provided with a filling through hole; the tail end of the filling through hole is provided with a sealing cover plate, and the front end of the filling through hole is provided with an end sealing piece; the carbon fiber fixing plate bundle passes through the end sealing piece and then enters the filling through hole. The anchorage is characterized in that the sealing cover plate is provided with a wedge block; the wedge block extends inward into the filling through hole; the carbon fiber fixing plate bundle is divided into a first plate bundle and a second plate bundle which are symmetrical; two sides of the wedge block is symmetrically provided with two wedge block slopes which gradually approach to each other when the two wedge block slopes extend inward from the tail end of the filling through hole; the first plate bundle and the second plate bundle are arranged on the wedge block slopes at two sides of the wedge block in a reclining manner; the tail end of the first plate bundle and the tail end of the second plate bundle are respectively fixedly connected with the sealing cover plate; and a gap in the filling through hole is filled with an epoxy resin mixed medium. The anchorage has the advantages that the anchorage can effectively anchor the carbon fiber fixed plate bundle having large bearing capacity.

The invention discloses a variable-clamping-force corrugated clamping plate anchor for an FRP sheet, and relates to an anchor for an engineering structure in the field of high-strength composite materials. The variable-clamping-force corrugated clamping plate anchor for the FRP sheet includes an upper corrugated clamping plate, a lower corrugated clamping plate, bolts, nuts, washers and the FRP sheet. The FRP sheet passes through the upper corrugated clamping and the lower corrugated clamping plate, the upper corrugated clamping plate and the lower corrugated clamping plate clamp the FRP sheettightly, the washers are arranged at bolt holes of the upper corrugated clamping plate and the lower corrugated clamping plate, the nuts penetrate through the upper corrugated clamping plate and thelower corrugated clamping plate, and the FRP sheet is anchored by tightening the nuts. The anchor adopts the corrugated clamping plates to replace flat clamping plates to clamp the FRP sheet, and theanchoring bolt radius gradually increases from an outlet to the end part of the anchor, the clamping force provided by the anchoring bolts further gradually increases from the outlet to the end part of the anchor, the stress peak at the outlet of the anchor can be effectively reduced, the anchoring efficiency is improved, the anchoring length is shortened, materials are saved, and economy is improved.

The invention discloses a novel FRP (Fiber Reinforced Polymer) rib adhesive type anchorage device with a screw plug and a mounting method of the anchorage device. The anchorage device comprises an anchor drum and annular gaskets, wherein the annular gaskets are respectively adhered to the two ends of the anchor drum; the anchorage device further comprises the screw plug; the screw plug is in threaded connection with the pulled end of the anchor drum; a central through hole for mounting an FRP rib is formed in the center of each of the annular gaskets; the centers of the annular gaskets are positioned on a center line of the anchor drum. The FRP rib adhesive type anchorage device with the screw plug, disclosed by the invention, adopts the screw plug design at the end part to improve interaction between the anchor drum and the adhesive agent, enhance longitudinal sliding restraining of the adhesive agent, effectively prevent the adhesive agent from sliding out, and reduce the length of the anchorage device; compared with the conventional adhesion method on the anchorage device, the anchor drum with the same length can improve the bearing load; furthermore, the anchorage device is not required to be specially processed, low in material requirements, simple in structure, reasonable in design, convenient to use, simple in mounting technology, low in cost, and capable of increasing the anchorage efficiency as the screw plug is in threaded connection with the anchor drum.

The present invention discloses an anchoring apparatus and an operation method thereof. The anchoring apparatus includes: a movable framework (1); a folding-type working platform (2) that includes a working platform frame (203), a longitudinal guide (204), a transverse guide (205) and a central turntable (206), the longitudinal guide (204) being movable along the transverse guide (205), and the central turntable (206) driving the longitudinal guide (204) and the transverse guide (205) to rotate relative to the working platform frame (203); a drilling machine (3); a workpiece supply system (4); and a power control system (5) that drives the movable framework (1) to move. With the anchoring apparatus, the mechanical and automatic anchoring with anchor bolts and anchor cables can be implemented in anchoring, the labor intensity in anchoring can be greatly reduced, the efficiency of anchoring can be improved, and the safety in the entire process can be enhanced.

The invention relates to an internal-curved-surface-partitioned bond-type anchorage device for carbon fiber reinforced plastics (CFRP) cable strands. The anchorage device comprises an anchor ring, a large hole end plug and a small hole end plug, wherein the interior of the anchor ring is of a horn-shaped curved surface shape; partition grooves are arranged inside the anchor ring, each partition of the partition grooves is filled with CFRP cable strands; a cavity between the horn-shaped curved surface inside the anchor ring and the CFRP cable strands is filled with epoxy resin adhesives; the longitudinal axial section line of the curved surface inside the anchor ring is a curved section, the curved section is close to a straight line at the small hole end of the anchor ring, and the curvature of the curved section gradually increases from the small hole end to a large hole end to allow the interior of the anchor to be of the horn-shaped curved surface shape. The anchorage device has the advantages that the horn-shaped curved surface inside the anchor ring can allow the radial extrusion force borne by the cable strands to be in an optimal distribution state in the longitudinal direction; the cable strands are arranged in a partitioned manner, the uneven transverse stress of large-diameter cable strands can be improved, a size effect can be lowered, the anchorage efficiency coefficient can reach 100% when the CFRP cable strands are large in diameter, and the device is excellent in static and dynamic performance.

The invention discloses a circular section muti-layer sheet type CFRP inhaul cable system and relates to the technical field of civil engineering and composites. The circular section muti-layer sheettype CFRP inhaul cable system comprises CFRP sheets, sheet type foam, circular-arc type foam, a polyethylene protection sleeve, an upper corrugated clamping plate, a lower corrugated clamping plate, corrugated clamping sheets, bolts, nuts and gaskets. The CFRP sheets different in width are stacked in the rule that the width dimensions of the CFRP sheets are gradually reduced from the middle to theupper and lower layers, the sheet type foam different in width is used for spacing the CFRP sheets at a free section of an inhaul cable, top points of the outer edges of all the CFRP sheets and the sheet type foam are internally connected with one circle together to form a virtual circular section, and the outer portions of the CFRP sheets and the sheet type foam are wrapped with the polyethyleneprotection sleeve. The CFRP sheets are spaced through the corrugated clamping sheets in an anchoring section and are clamped and anchored through the corrugated clamping plates. The circular sectionmuti-layer sheet type CFRP inhaul cable system overcomes the defect that a circular section stick type CFRP inhaul cable is difficult to anchor, solves the problem that a rectangular section sheet type CFRP inhaul cable is poor in wind-induced vibration resistance and can be applied to cable-stayed bridges, suspension bridges and space cable structures.

The invention relates to an automatic pressure relief type grouting anchor rod. Anchoring slide sleeves which are arranged behind an anchor rod head in a spaced mode sleeve outside an anchor rod bodyin a sliding sealing mode; anchoring through holes are formed in the inner walls of the anchoring slide sleeves; anchoring slide blocks which are in sliding fit to the hole walls of the anchoring through holes are formed in the anchoring through holes in a sliding mode; outer-end orifices of the anchoring through holes are equipped with pulverizable blocking sheets in a blocking mode; a table shoulder which faces towards and is in sealing fit to the slot bottom of a ring slot is arranged at the periphery of the anchor rod body in a sealing mode; a ring-shaped interval space is formed between the step surface of the table shoulder and the front side slot wall of the ring slot; a radial through hole which communicates with the ring-shaped interval space is formed in the anchor rod body; thetops of the anchoring slide sleeves are equipped with elastic claws capable of being elastically shrunk and stretched; step-shaped locking blocks which are bulged on the inner walls are arranged on the rear parts of the elastic claws; and the step-shaped locking blocks are embedded into grouting long holes formed in the top of the anchor rod body. The automatic pressure relief type grouting anchorrod cancels the original step of regulating an anchorage state of the anchor rod, so that labor intensity of a worker in a construction process is reduced, and anchoring efficiency is improved.