38results about How to "Avoid eccentric force" patented technology

The invention discloses a double sleeve for a pile foundation test. The double sleeve comprises an inner sleeve and an outer sleeve, wherein the inner sleeve is concentrically sleeved in a pipe cavity of the outer sleeve; the inner sleeve and the outer sleeve are made of glassfiber reinforced plastic mortar pipes; a plurality of sealing limit grooves are arranged on the surface of the outer wall of the inner sleeve along the axial direction; an O-shaped rubber ring is embedded in the sealing limit grooves; a clearance between the periphery of the O-shaped rubber ring and the inner wall of theouter sleeve is between 2 and 4 mm. The invention also discloses a method for constructing the double sleeve for the pile foundation test, which applies carbon fiber restoration reinforcing technology to carrying out multi-connector integral butting joint adhesion on a pipe section of a glassfiber reinforced plastic mortar double pipe on the ground. The double sleeve has the advantages of light weight, high strength, smooth surface, small frictional resistance between the pipe wall and a soil body, simple construction, safe operation, short construction period and the like, can significantly improve the reliability and accuracy of a result of the pile foundation test, and is applicable to pile foundation bearing tests of various foundation ditches.

The invention discloses a steel pipe truss hinging node device, which is mainly formed by a steep pipe truss, a rubber heel block, an embedded part and a concrete fixing device; the embedded part comprises a horizontal steel plate and steel bars vertically fixedly welded with the horizontal steel plate; the steel bars are arranged in the concrete fixing device; a support and a support transition plate which are integrally molded with the steel pipe truss are arranged at the lower end of the steel pipe truss; the rubber heel block is arranged between the support and the support transition plate by an anchor bolt; the support transition plate is fixed at the upper end of the horizontal steel plate in a welding mode. The steel truss hinging node device has the advantages that right angle hooks are arranged at the lower ends of the steel bars, thus greatly enhancing the friction between the embedded part and the concrete fixing device; the support arranged at the lower end of the steep pipe truss is welded with the steel pipe truss, so stressed centers of all steep pipes of the truss cannot be converged at one point, the existence of eccentric force at a node is avoided, the bearing force and rigidity of the hinging node are effectively improved, and the demands of the building field on the steel pipe truss hinging node are met.

The invention discloses a double-truncated-cone type pile shoe. The double-truncated-cone type pile shoe comprises a casing, reinforcing ribs arranged in the casing and a shoe cover connected with the upper end of the casing. The casing is composed of at least two inverted hollow truncated cones from top to bottom, wherein the upper truncated cone is provided with a coaxial central hole with the diameters tapering from top to bottom, and the lower truncated cone is in a bucket shape, the diameter of the mouth of the bucket is identical to the aperture of the small-diameter central hole of the upper truncated cone, and the mouth of the bucket is connected with the small-diameter central hole of the upper truncated cone; the end surface where the upper truncated cone and the lower truncated cone are connected is provided with a truncated cone shoulder which is provided with a plurality of ring grooves; a plurality of straight grooves are distributed on the circumferential surface along the radial direction from the center of the truncated cones; the bottom of the bucket of the lower truncated cone is provided with at least one ring groove; the circumferential surface of the upper end surface of the upper truncated cone, which is close to the edge of the upper truncated cone, is evenly provided with three holes for mounting chord members of a pile leg. The double-truncated-cone type pile shoe improves the compression-resisting capacity of the pile shoe and meanwhile has the advantages of lateral sliding resistance and ocean current scouring resistance.

The invention discloses a basic structure for a V-shaped cable of an UHV single-column cable tower. column, one end of which is embedded in the inclined main column and the other end of which exposes the top surface of the inclined main column. Two stay wires arranged in a V shape are connected between the tower columns. The U-shaped stay wire rod is bent inside the inclined main column. The lower section of the folding line is parallel to the geometric center line of the inclined main column. The planes where the two stay wires are located are parallel. The invention can be used well with the V-shaped cable arrangement structure, not only meets the bearing requirements of UHV cable towers, reduces the number of foundations, but also has a simple type and is easy to implement.

The invention provides a pavement material direct tensile test apparatus with eccentric tension avoided and method thereof, and the apparatus comprises a test part, a detected part installed in the test part, and electromagnetic force control part, wherein, the test part comprises a hinged base on the spherical shape, and a spherical lower hinged base matched with the spherical upper hinged base, and the spherical upper hinged base is installed with a upper link which is connected to a mechanics test and simulation testing machine, and the spherical lower hinged base is connected with a cast iron block by the lower pull bar, and the test part is installed between the spherical upper hinged base and the spherical lower hinged base; the electromagnetic force control part is connected with the cast iron block. Because of the flexibly rotary spherical hinged base, in the test process, when the test part is tensioned, the test part can naturally drop depending on gravity, thereby the eccentric force being effected on the detected part during tensile test is avoided, and the test result is more accurate, in addition, the invention has the advantages of simple structure, convenient operation, economic utility, reliable test data provision and minimized test error.

The invention relates to a high-pressure single-guide natural gas trap. The high-pressure single-guide natural gas trap is characterized in that an upper shell 11 is provided with a liquid diversion component 31 penetrating the upper middle of the upper shell, one end of the liquid diversion component 31 penetrates a flange fixing plate 32, a water inlet adapter tube 38 is welded at the other end of a welding connecting plate 33, a single-guide limit component 12 is connected to a fixable gasket 7, and a double-float link component 5 moves in a guide sleeve 46. One end of a long lever 50 is connected with a spool support 51, and the other end of the long lever 51 is connected with double floats 41. One end of a short lever 54 is connected with the spool support 51, and the other end of the short lever 54 is connected with a buoyancy increaser 20. A spool 55 is disposed in the spool support 51. A valve seat 58 is connected to a valve seat fixing plate 57 in a threaded manner. A connecting shaft 60 sequentially penetrates a fixing block I59-1, a connecting block I56-1, a connecting block II56-2 and a fixing block II59-2 to connect the spool support 51 and the valve seat fixing plate 57 together. A valve seat component connecting plate 24 is connected below the valve seat fixing plate 57. An outlet adapter tube 25 is welded at the lower end of a middle hole of the valve seat component connecting plate 24 and penetrates a split cavity wall. The high-pressure single-guide natural gas trap is small in size and low in cost and meets the technical requirement for no leakage.