2190 results about "Load carrying" patented technology

A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

The drilling system includes a work string supporting a bottom hole assembly. The work string including lengths of pipe having a non-metallic portion. The work string preferably includes a composite coiled tubing having a fluid impermeable liner, multiple load carrying layers, and a wear layer. Multiple electrical conductors and data transmission conductors may be embedded in the load carrying layers for carrying current or transmitting data between the bottom hole assembly and the surface. The bottom hole assembly includes a bit, a gamma ray and inclinometer instrument package, a steerable assembly, an electronics section, a transmission, and a power section for rotating the bit. It may or may not include a propulsion system. The drilling system may be a gravity based drilling system that does include a propulsion system. Various motive means may be provided, such as gravity, to apply weight on the bit.

Integrally stiffened and formed, load carrying structures comprising a plurality of elongated thin-walled tubes placed co-extensively in a complementary side-by-side fashion which together form a hollow structure having a desired external contour. Integral skins forming the external and internal surfaces of the structure cooperatively therewith. The structure can be formed with an underlying internal support member spanning the interior of the load carrying structure, thereby connecting opposite sides of the structure together. Also, each of the tubes are wound with fibers in controlled orientations generally paralleling the direction of the loads applied to the tubes to optimize the strength to weight ratio of the tubes.

A load carrying structure having a selectively rigid or flexible characteristic includes a thermoplastic material (7) having a softening temperature above the operating temperature range of the load carrying structure, and a heating arrangement (8) provided to selectively heat the thermoplastic material to above its softening temperature. During normal operation, the thermoplastic material is in a rigid state and the overall load carrying structure is rigid to the prevailing loads. By activating the heating arrangement to heat the thermoplastic material to at least its softening temperature, the thermoplastic material and therewith the load carrying structure becomes flexible so that it may be deformed to a different configuration by applying a deforming load. Once the desired deformed configuration is achieved, the heating arrangement is deactivated, and the thermoplastic material is allowed to cool below its softening temperature so that it once again becomes rigid and rigidly fixes the new deformed configuration. The deforming force may be applied by any actuating mechanism, or for example by arranging shape memory alloys in connection with the thermoplastic material.

A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

A ramp, for instance a walk ramp for pets, such as dogs, includes an elongated walk bridge (1) which is intended to be placed so as to slope between two height levels. The bridge includes two parts (10, 11) which are mutually sequential in the longitudinal direction of the bridge and which are mutually connected via a hinge means (18) which in one swinging direction has an end position in which the walk surfaces of said parts (10, 11) are essentially parallel and in a common plane, and which in its other swinging direction enable the parts (10, 11) to be folded to essential parallelity. When the bridge is extended or unfolded, a join gap between the parts (10, 11) on the upper load-carrying side of the bridge will be covered by a cover plate (4), which has an edge part that is fastened to one bridge part (10) and extends generally transversely over the width of the bridge (1). The opposite edge part of the cover plate (4) is free in the folded state of the bridge and projects out beyond the ends of said bridge parts (10, 11). The free edge part of the cover plate has an opening (41) which, when the bridge is extended or unfolded, is spaced from the join (17, 17) between parts such as to form a bridge carrying handle (42).

A track and carriage system that includes a pair of spaced apart parallel rails and a carriage rollingly mounted on the rails. The carriage is a rectangular, in plan view, structural unit having a pair of opposite parallel marginal edges with a frame side rail secured to each of the marginal edges. Rollers journalled on the side rails rollingly support the carriage on the rails. A motor mounting subassembly carried by the carriage provides a downwardly facing channel that receives therein a portion of one of the rails. A plurality of rollers on the motor mounting subassembly maintains a minium air gap between a linear motor mounted on the subassembly and a magnetic strip on an adjacently disposed side face of one of the rails. The carriage structural portion maybe a plurality of beams disposed side-by-side or one or more extruded monolithic cast structures. A structural plate like member maybe mounted on the load carrying frame. If desired a power driven roller conveyor maybe mounted on the carriage for loading and off loading goods. Also the motor mounting subassembly and a frame side rail secured thereto running on a single rail provides a mono rail transfer vehicle.

The invention discloses a shield construction method of digging three parallel tunnels under a trunk railway, which belongs to the field of tunnel construction technology. The construction method of the invention comprises the procedure that: the model analysis on each construction sequence and method is made by a three-dimensional finite element and the shield construction sequence is selected; to select the reinforcement project of the railway bed is selected according to the influence degree of the dynamic stress, the load-carrying structural model is adopted to calculate and decide the shield area reinforcing bars enhancement project under the dynamic load of the railway train; the construction parameters are selected according to the test results and the performance of the shield machine, the front earth pressure is reasonably set , the synchronizing mortar injection is enhanced, the forward digging speed and the axis deviation are strictly controlled, the secondary mortar injection is made, the foam or mud is filled by utilizing a pre-embedded injection hole; the strict monitoring measures to monitor the shield construction process is adopted so that the construction unit can adjust the construction parameters in time and guarantee the construction safety. The invention not only guarantees the construction quality and the construction safety of the project but also creates good economic benefit.

A load handling operation control apparatus for an industrial vehicle, which has a load carrying apparatus provided movably on a vehicle body, is provided. A load carrying apparatus 2 is positioned with a load handling target 41, 42 according to its movement. A load handling control section 47 has a display device 28 and a detection device for detecting the position of the load handling target. A image control section 46 displays positioning information for supporting positioning of the load carrying apparatus 2 with respect to the load handling target 41, 42 on the display device 28 based on a positional detection result detected by the detection device.

A hex-axis horizontal movement dynamic simulator is aimed at Modular Design without hydraulic or pneumatic system but which were conventionally used in the so called Stewart Platform; this dynamic simulator comprises three sets of movement control unit with symmetrical structure located at the positions relative to each other forming three sides of an equilateral triangle, and a load-carrying platform which connected to the three movement control by means of three sets of universal-joint yoke mechanism each relative position located on the load-carrying platform are each other arranged to form as three sides of an equilateral triangle too; with this type of arrangement, this dynamic simulator have a 6-degree of freedom motion when a sets of movement control unit makes different rectilinear motion, the load-carrying platform will generate a combination of spatial translation motion and angular motion.

A container crane includes a movable trolley and a load-carrying frame pendantly connected to the trolley and comprised of a spreader and a head block, for transfer of a container from or to a transport vehicle. Plural optical detectors are mounted on the trolley for identifying longitudinal and transversal edges of the head block or spreader and the transport vehicle. Operatively connected to the detectors is a processing device for determining a spatial position of the edges and calculating a position of longitudinal and transversal center lines of the head block or spreader and the transport vehicle and their spatial positions in relation to one another. In this way a possible offset of the center lines of the head block or spreader with regard to those of the transport vehicle in longitudinal and transversal directions as well as a rotation angle of the center lines can be determined, whereby a detected offset or rotation angle is compensated by displacing the spreader relative to the head block.

At a beams-to-column joint connection of two beams to a column, in which the joint connection comprises both a gravity load-carrying connection and a moment-resisting connection, there is added a beam-to-beam connection across the column, using two gusset plates, facing each other, on opposite sides of the joint connection. The gusset plates, which are not connected to the column in a moment-resisting connection, connect the two beams, in a tension and moment-resisting connection with respect to each other, by longitudinal welds between the gusset plates and the beams, and provide the capability of withstanding disastrous events, including loss of column support and/or loss of integrity of the beams-to-column joint connection and severe torsional and lateral inelastic deformation due to direct blast pressure. When subjected to such violent conditions and upon loss of column support, and, the likely loss of integrity of the beams-to-column joint connection, the two beams and two gusset plates provide independent beam-to-beam structural continuity, causing the two beams to act as one long beam, or, in other words, a “double-span” condition is created. Such beam-to-beam connection is capable of carrying the tension, torsional and moment loads placed upon the beams, to the ultimate capacity of the beams. Inasmuch as a gusset plate is disposed on each side of the beams-to-column joint connections, substantial shielding of those connections against blast and impact forces is also achieved.

A tailgate for a load carrying body, such as a dump trailer, is selectively openable to various positions, including left opening, right opening, swing up and swing down. Variable opening positions maximize flexibility for the owner/operator. A left or right swing opening is enable by removeable and storable hinge pins. An up or down opening is enable by latches, which are openable and operate as hinges when closed.

The invention provides a long-span over loading cable crane and an installation method thereof which relates to a cable crane used in bridge construction and consists of a guy rope tower 1, a cable tower 2, a main cable and a hoisting traction system 3, an anchoring system 4, an electromechanical system 5 and a wind cable system 6. The tower of the cable crane consists of the guy rope tower 1 and the cable tower 2 which is hinged on the top of the guy rope tower 1 and fixedly connected with the bottom of the guy rope tower 1. The invention adopts the techniques of the parallel bearing of a plurality of main cables, the wind cables connected in series, the joint construction of the cable towel and the guy rope tower, etc., thereby greatly improving the loading capability of the long-span cable crane and lowering the manufacturing cost as much as possible. The invention can reduce the influence of the unbalanced horizontal force on the top of the cable tower 2 on the guy rope tower 1 and greatly save the construction cost of the guy rope tower 1. The loading cable crane has strong load-carrying capability, wide loading range and high economic performance.