884 results about "Earth anchor" patented technology

The present invention is an assembly comprising a prosthetic valve to be implanted; a radially expandable stent comprising at least one zone intended to be expanded to allow the stent, in the expanded state, to bear against the wall of the body duct to be fitted with the valve, this bearing making it possible to immobilize this stent with respect to this wall; and means for mounting the valve with respect to the stent, making it possible to connect the valve to the stent in such a way that the placement of the stent allows the valve to be mounted in the body duct, and expansion means such as a balloon catheter being provided to trigger expansion of the stent at the implantation site. According to the invention, the valve and the stent are designed in such a way that, at the moment when the stent is expanded, the valve is situated outside the zone or zones of the stent that are subjected to said expansion means. The invention thus consists in separating the valve and said zone or zones to be expanded, so that the expansion of the stent can be effected with an expansion force suitable for perfect anchoring of this stent in the wall of the body duct to be fitted with the valve, and without any risk of destruction or damage of the valve.

An anchor for a wellbore is adaptable to be operated in at least two separate and distinct ways. In one embodiment, a whipstock anchor is provided that can be operated either mechanically or hydraulically. In another embodiment, the anchor is designed to run through a restriction in a retracted position and thereafter expanded to position a wellbore tool in the wellbore. Preferably, the anchor is expandable to set in wellbores of various sizes and either cased or uncased.

The invention discloses a construction method of a single main cable inclined-suspender earth anchored suspension bridge, which is characterized by comprising the following steps of: respectively completing anchoring construction, main tower construction, steel box girder construction, main cable construction and suspender construction, then drawing a front anchor head of a suspender by adopting a jack, and fixing on a steel box girder; regulating the tensile force of the suspender till the tensile force of the suspender and the line shape of a main cable meet the requirements; disassembling all temporary supporting seats, and lowering the steel box girder to a main tower beam as a permanent supporting seat so as to complete the construction. The whole construction process has safety and reliability so as to provide a necessary precondition for ensuring project quality. The construction method has reasonability, high efficiency and concision, can not only ensure the project progress, but also effectively reduce the construction cost.

An apparatus for measuring tension in guy wire systems wherein the lower end of the guy wire has a thimble adjoined by a connection pin to a yoke or clevis of a turnbuckle shackle bolt connected to an earth anchor. A block assembly is removably received beneath the clevis and a thimble-engaging jaw assembly is removably received on the guy wire above the clevis. The block assembly and jaw assembly are connected at one end by a threaded rod assembly that includes a strain sensor connected with an indicator device, and by a threaded rod at their opposed end. The jaw assembly is drawn downward by adjusting nuts on the threaded rods beneath the block assembly to engage the thimble and move it downward transferring the tension to the threaded rod and threaded rod assembly which is sensed by the strain sensor and indicated by the indicator device.

An all-ground-anchor type single-tower double-span cable-stayed bridge system comprises a main beam, a stay cable, a main tower and an anchor. The main beam is composed of a side span main beam body and a main span main beam body. The length of the side span main beam body is far smaller than that of the main span main beam body, and the side span main beam body and the main span main beam body are asymmetrically distributed. The side span main beam body is supported by a support arranged on a side span buttress main tower lower beam and fixedly connected with the main span main beam body and the anchor. The stay cable comprises a main span stay cable body and a side span stay cable body. The main span stay cable body supports the main span main beam body. The upper end of the side span stay cable body is anchored to the main tower and corresponds to the main span stay cable body in position. The lower end of the side span stay cable body is anchored to the anchor. The main tower provides anchorage for the main span stay cable body and the side span stay cable body and meanwhile transmits the vertical force of the side span stay cable body to a foundation through a main tower bearing table and a main tower foundation. The anchor provides anchorage for the whole side span stay cable body and meanwhile balances the horizontal force transmitted by the side span main beam body. The invention further discloses a construction method of the cable-stayed bridge system. The cable-stayed bridge system is high in adaptability, reasonable in structural system, easy and convenient to construct, short in construction period, low in manufacturing cost and small in safety risk in the construction period.

The ground anchor includes a shaft having a pointed lower end, an embossed section extending between lower and upper portions of the shaft to retain the threaded upper portion above ground, at least one helical blade attached to the lower portion, a stabilizer cap mounted concentric on the upper portion, the cap having an outer diameter greater than the helical blades and having a plurality of spikes, a first and second securing member threaded onto the upper portion for holding the stabilizer cap against the embossed section and rotating the shaft into and from the ground, the second securing member having an outer diameter less than the first securing member and an interchangeable mount threaded to the upper portion. The interchangeable mount having a housing for covering the securing members and the upper portion and optionally having an attachment(s) extending therefrom.

The invention relates to a steel-concrete composite column anti-seismic anti-torsion test loading device and a manufacturing method thereof, and belongs to the technical field of structure engineering. The steel-concrete composite column anti-seismic anti-torsion test loading device comprises a loading frame, a top beam, a base, an antifriction plate, a thrust jack, and two electro-hydraulic servo actuators. The loading frame is obtained by welding steel plates. All column bases of the loading frame are provided with bolt holes and are fixedly connected to the ground by ground anchor bolts. The top beam is obtained by welding steel plates. The bottom of the top beam is provided with bolt holes and is fixedly connected to a top steel plate of a test piece by bolts. The base is obtained by welding steel plates. The top of the base is provided with bolt holes and is connected to a bottom steel plate of the test piece by bolts. An upper end of the thrust jack is connected to the loading frame by a rolling bearing. The antifriction plate is horizontally arranged in the center of the top of the top beam. The electro-hydraulic servo actuators are arranged horizontally and are fixedly connected to the top beam. The steel-concrete composite column anti-seismic anti-torsion test loading device solves the problem of the prior art, has a simple structure, is convenient for use, has strong universality, can be used for anti-seismic anti-torsion tests on various steel-concrete composite columns, and has wide application prospects.

A lateral force resistance device for a ground achoring system suitably used in expansive soils has an inner sleeve structure and an outer collar connected to the inner sleeve structure by a plurality of load transfer members such as longitudinal load transfer plates. The lateral force resistance device is embedded in the soil over a ground anchor, such as a helical anchor, by sliding the inner sleeve structure of the device over the top end of the anchor and using an embedment method involving vibration, pushing or other technique. The outer collar of the lateral force resistance device provides a relatively large surface area displaced from the inner sleeve structure for providing efficient load transfer to the surrounding soil.

A bait station system has a bait station mounted to a base. The bait station has the general shape of a box with a locking hinged lid. The box has side walls with openings so that rodents can enter into the box and gain access to poison bait or a mechanical trap. The base has a lower tray for receiving a weight. The lower tray has a lower surface which may be glued, attached by a screw, bolt, or earth anchor to a planar surface. The bait station is releasably mounted to the base by a locking mechanism which can be unlocked only by gaining access to the interior of the box forming the bait station.

The invention provides a seabed static sounding penetration device which comprises a base frame for supporting the whole device, a probe storage, a traveling mechanism, a manipulator, a ground anchor, a bottom plate, a rotating intermittent mechanism and a hydraulic power source. The bottom plate is fixedly connected to the bottom of the base frame. The probe storage at least comprises a storage frame, a probe, a probe frame and a rotating shaft. The storage frame is fixed on the bottom plate. The rotating shaft and the probe frame are positioned in the storage frame. The probe is placed on the probe frame. The rotating shaft is fixed at the center of the probe frame and can drive the probe frame to rotate, wherein the top end of the rotating shaft is fixed at the top of the storage frame through a rolling bearing; and the bottom end of the rotating shaft is fixed on the bottom plate through a rolling bearing. The seabed static sounding penetration device has compact structure, is simple and convenient to control, is reliable and stable to use, can be used for realizing a sounding process with the maximum cone penetration depth of 15m, is suitable for the seabed static sounding and can also operate on the land.

A ground anchor system for anchoring a post comprises a base plate, a housing extending above the base plate, an anchor extending below the base plate, the anchor comprising a tapered helix having a thread encircling a tube which tapers inwardly towards the lower end of the anchor, and a boring tip at the lower end of the anchor. The tapered helical thread of the anchor firmly engages with the ground into which it is threaded to provide a solid support to a post inserted in the housing. Helix taper and length, and thread taper and pitch may be selected to optimize retention and lateral support of a post in a particular ground type.

An earth anchor of the pivoting type having an essentially cylindrical body, a blind bore extending thereinto from a trailing axial end of the cylindrical body and a leading edge projecting from a leading end of the body, the leading edge being formed as a rounded surface adapted for penetration through reinforcement paths while minimizing severing of the strands of the mat.

The invention relates to a wellhead positioned integrated guide vertical well repair catwalk and an application method. According to the technical scheme of the wellhead positioned integrated guide vertical well repair catwalk, the two sides of a base are connected with a plurality of hydraulic supporting legs and a plurality of ground anchors and used for supporting the vertical catwalk; a lifting arm cylinder is hinged to a lifting arm; a guide rod is hinged to a guide rod cylinder; a guide rod diagonal brace is hinged to the guide rod; the lifting arm cylinder can drive the lifting arm to be turned over from the horizontal state to the vertical state; the guide rod cylinder can drive the guide rod to be turned over from the horizontal state to the vertical state; the guide rod diagonalbrace can make the guide rod maintain the vertical state; and the guide rod diagonal brace can be taken down in a transportation state for independent storage. The wellhead positioned integrated guidevertical well repair catwalk has the beneficial effects that an oil pipe or a sucker rod is turned over by 90 degrees and conveyed to above a wellhead instead of an original lifting mode; the intermediate link that the oil pipe or the sucker rod in an original lifting catwalk is conveyed to the wellhead and is in an inclined state is omitted; and the oil pipe or the sucker rod is directly conveyed from the horizontal state to the vertical state, and the working efficiency in the catwalk is improved.

A foundation driller for anchoring of components in soil is provided that includes an apparatus in which the foundation driller comprises a base body with at least one cylindrical area and at least one cutting blade that provides forward advancement, in which the base body comprises at least two cylindrical areas with different diameters, wherein the area nearer to the soil has a smaller diameter and the at least one cutting blade providing forward advancement is attached at the area nearer to the soil and has an even incline.

An adjustable anchor for anchoring a lift cord in a movable rail of a covering for an architectural opening includes a housing which is releasably positionable interiorly of the movable rail in alignment with a lift cord for the covering with the anchor including a rotatable drum within the housing and around which the lift cord can be wrapped or unwrapped by rotating movement of the drum with a tool. Two distinct systems are provided for releasably securing the drum in any selected position to retain the amount of lift cord wrapped therearound with the two system acting in mutually perpendicular planes for reliable anchoring of the lift cord.

An earth anchored equipment support platform for supporting equipment at a desired elevation above the ground surface where the earth anchor is enclosed and concealed by the equipment support platform includes a top, a bottom and a sidewall joined with and formed along the perimeter of the top. An earth anchor receiving space is enclosed by the sidewall. A sight passage extends through the sidewall and into the earth anchor receiving space, wherein the earth anchor receiving space is viewable from an exterior position of the sidewall though the sight passage. Two or more equipment support platforms can be stacked, one on top of each other, in a partially nested arrangement to increase equipment elevation.

A gob-side entry retaining pasty filler on-line detection method comprises the steps that before each monitored space is ready to be filled, supporting rods are fixed to a base plate of a space to be filled through ground anchors, the upper ends of the supporting rods support a top plate of the space to be filled, measuring optical fibers are arranged between the supporting rods, an optical fiber connector is introduced out of the tail portion of the last supporting rod in each set of supporting rods and is connected in a mining optical cable through optical fibers so that optical fiber monitoring signals can be transmitted to a distributed optical fiber demodulator, demodulated signals are transmitted to a computer system, and pasty filler is monitored in real time on line and is analyzed and processed after the space is filled. The gob-side entry retaining pasty filler on-line detection method has the advantages that equipment installation is easy, the method is suitable for being universally popularized, no power supply is needed under a well, a site is safe, all-optical measurement and optical fiber transmission are adopted, influences caused by electromagnetic interference are effectively avoided, a monitoring result can be provided in time, and the method is favorable for directing on-site filling mining production work.

Disclosed is a method of constructing partially earth-anchored cable-stayed bridges using a thermal prestressing technique, in which, when a steel girder-type partially earth-anchored cable-stayed bridge is built using a cantilever construction technique, the center of an intermediate span of the bridge is closed with a final key segment using a thermal prestressing technique, thus applying an initial axial tensile force to reinforcing girders of the bridge. To apply the initial axial tensile force to the reinforcing girders while the center of the intermediate span is closed with the final key segment, an appropriate space length required for closure of the final key segment is determined, and both the heating region and the heating temperature of the reinforcing girders according to the initial axial tensile force to be applied to the reinforcing girders during a process of manufacturing the final key segment are determined. Thereafter, the reinforcing girders are heated using a heating means according to the above-determined conditions, thus being thermally lengthened to predetermined lengths corresponding to the predetermined space length. The junction between the reinforcing girders at the center of the intermediate span is closed with the final key segment and, thereafter, the heating means is removed from the reinforcing girders.

A ground anchor (10) comprising an anchor shaft (11) and an anchoring screw (13) moulded onto the anchoring shaft adjacent the lower end thereof. The anchoring shaft (11) is of a rectangular cross-section with four side walls (12). The anchoring shaft (11) is configured at its bottom end (15) for ground penetration. The upper end (19) of the anchor shaft (11) is configured to receive torque applied thereto. The anchoring screw (13) comprises a hub (21) and a screw flight (23) on the hub. The anchoring screw (13) is moulded onto the anchor shaft (11), and the hub (21) is keyed to the anchor shaft. The anchoring screw (13) is so constructed that the spiral flight (23) is rigid yet has some resilient flexibility which allows the flight to deflect laterally in the direction of the screw axis. Specifically, the screw flight (23) has sufficient rigidity to allow it to penetrate the ground in which it is intended to be used when torque is applied to the anchor shaft (11). Further, the screw flight (23) has sufficient rigidity in order to retain the ground anchor (10) embedded in the ground when subjected to the normal load conditions for which it is intended, as is the case with conventional ground anchors. The resilient flexibility provides the screw flight (23) with a degree of ‘springiness’, so allowing the screw flight (23) to deflect laterally in the direction of the screw axis when subjected to the loadings to which it is exposed when winding into the ground. With this arrangement, the pitch of the helical screw (25) is permitted to alter during ground embedment as ground pressure increases.

A resin injection apparatus for use in connection with a drilling apparatus for installing ground anchors. The resin injection apparatus comprises a fluid injector, adapted to be connected in fluid communication with a hollow drill shaft of a drill rig. The fluid injector can be used to inject one or more resin fluids into the drill shaft wherein, in use, when a hole has been drilled in a rock stratum, resin can be injected into the hole via the drill shaft prior to inserting a ground anchor.

The invention discloses structure construction of an arch bridge and in particular relates to a hoisting construction method for a single-rib closure rope of a large-span reinforced concrete arch bridge; through the adoption of single-rib closure hoisting, the numbers of main ropes, buckling ropes and ground anchors are reduced by half, so that the equipment utilization rate is increased, the construction period is reduced, the cost is reduced, a single rib of the large-span reinforced concrete arch bridge is safely and rapidly closed, and obvious social benefits and economic benefits are obtained.

A system and method for protecting a structure from wind damage utilizes a netting 12 positioned over the roof of the structure and a plurality of ground anchors 16, 17 at least partially below ground level and spaced from the structure. A plurality of perimeter cables 18, 20, 34 are each spaced about a perimeter portion of a netting when deployed, and a plurality of tie-downs 22 each interconnect one of the plurality of perimeter cables to a respective one of the plurality of anchors.

The invention provides a basement outer wall single-side steel formwork supporting system and a construction method thereof, and relates to the technical filed of constructional engineering equipment. Aiming at the problems that the labor intensity of construction personnel is high and formwork supporting work efficiency is low existing in the available supporting system, the basement outer wall single-side steel formwork supporting system and the construction method thereof are provided. The basement outer wall single-side steel formwork supporting system comprises a pair of tracks, bases, and a plurality of supporting trusses, wherein the pair of tracks is laid at a foundation slab and parallel to an outer wall steel formwork, the bases are arranged on the tracks and can slide along the tracks, and the multiple supporting trusses are vertically arranged at intervals and are connected with the outer wall steel formwork; and bottom parts of the supporting trusses are hinged to the bases, and the supporting trusses are detachably connected with top ends of the bases through a plurality of adjusting rod pieces. The construction method comprises the steps that the steel formwork supporting system is spliced and fixed, after outer wall concrete is poured, a ground anchor assembly and a diagonal bracing are disassembled, an adjusting rod piece is retracted, so that the demoulded outer wall steel formwork are made to be supported on the base, and the next working section is started to continue pouring construction of outer wall concrete.