12results about How to "Improve load resistance" patented technology

The utility model discloses a regular hexagon honeycomb macromolecule geocell which comprises a plurality of groups of geocell bodies, the plurality of groups of geocell bodies are connected to form a geocell grid group, and each geocell body comprises a regular hexagon, a punching array, a reinforcing column and a limiting groove. The limiting grooves are formed in the lower portions of the outer surfaces of the front side and the rear side of the regular hexagon, and concave ground inserting rods penetrate through the limiting grooves. According to the regular hexagon honeycomb macromolecule geocell, the geocell bodies are arranged, the reinforcing columns are fixedly installed in the geocell bodies, the load resisting capacity of geocell grid sets is improved through the reinforcing columns, the geocell bodies are conveniently limited through the arranged concave ground inserting rods, and therefore the geocell bodies are not prone to falling off. And the stability of connection between the geocell body and the ground is improved.

The utility model provides a kind of external hexagonal bolt of anti-loosening, including stud, screw head, nut, inner inflation hole, internal thread, inner inflation head and deformation groove, the stud and screw head are integrally set together, the stud is threadedly installed with nut, one end is provided with inner inflation hole, internal thread and deformation groove, the inner inflation head is threadedly connected with the internal thread of stud setting;The utility model improves strength by solid stud (no through hole);Circular array deformation groove cooperates conical inner inflation head, evenly expands to form stable interference when screwing, and the anti-loosening is superior to traditional;Inner inflation head integrally designed, screw rod is directly connected with internal thread, and installation is simple, stress is uniform.

To provide a carbon fiber bundle capable of suppressing winding due to ring-shaped fuzzes, which occurs when the carbon fiber bundle is rolled out for advanced processing, and a production method for producing the same. Disclosed is a carbon fiber bundle wherein an average single-fiber diameter B is 6.9 to 11.0 um, a tensile modulus E of resin-impregnated strands is 230 to 310 GPa, the number of fuzzes inherent in the carbon fiber bundle is 40 fuzzes / m or less, and a proportion of fuzzes with a structure having a difference between skin and core is 1 to 25% of fuzzes inherent in the carbon fiber bundle. Such a carbon fiber bundle is preferably obtained by a method including, in a process of heat-treating a polyacrylonitrile-based precursor fiber bundle with a single-fiber fineness of 0.9 to 2.2 dtex in an oxidizing atmosphere at 200 to 300°C, heat-treating the polyacrylonitrile-based precursor fiber bundle so that a heat generation rate Q, which is the left side of the formula (3), is 150 to 500 J / m2 / s until the density is 1.22 to 1.24 g / cm3, when q (J / g / s) is the heat generation rate of the single fiber, N is the number of filaments, d (dtex) is a single-fiber fineness of the stabilized fiber bundle and W (mm) is a yarn width, heat-treating the fiber bundle while applying a tension of 1.6 to 4.0 mN / dtex until the density is 1.38 to 1.50 g / cm3 to obtain a stabilized fiber bundle, and heat-treating the stabilized fiber bundle in an inert atmosphere at 1,200 to 1,600°C. Q=q×N×d / W / 10

The utility model discloses a kind of load-bearing frame and hydraulic climbing formwork system, the load-bearing frame includes base plate, base frame, rear shift module and additional module;Two and interval, parallel arrangement are equipped with in base plate, the interval between two base plates is equal to the interval in climbing cone to middle;Two and are respectively buckled on one of base plate in base frame, the interval in two base frames to middle is equal to the interval in climbing cone to middle;The connection between two base plates is perpendicular to the axis of base plate, the diagonal error of base plate and base frame is all not more than 2mm;Rear shift module and additional module are all installed on base frame. The hydraulic climbing formwork system includes the load-bearing frame. The load-bearing frame frame body wing risk reduction, load-carrying capacity promotion, the strengthening of structure and the promotion of stability are realized, so that the use safety of the load-bearing frame is better. The rigidity of the load-bearing frame is improved, the turnover efficiency of material is higher, partial buckling and deformation accumulation are avoided, and construction efficiency and construction quality are effectively optimized.

This invention provides a dual-swing mechanism for a marine crane, relating to the field of marine lifting equipment technology. It includes a slewing base, a boom, a lower compensating swing assembly, an upper compensating swing assembly, a lifting assembly for the spreader, a passive damping counterweight assembly, and a centrifugal locking assembly. The lower and upper swing assemblies respectively achieve two-stage swing compensation at the boom root and the spreader end. The passive damping counterweight assembly relies on the weight of the main counterweight to provide the reset pull, while the friction damping assembly dissipates the swing kinetic energy, requiring no additional power throughout the process. Centrifugal locking assemblies are installed at the ends of the lower and upper shafts, automatically locking the shafts when the swing exceeds the speed limit, avoiding the risk of uncontrolled load. The lower compensating swing assembly is equipped with a parallel four-bar stabilizing structure to improve rigidity, while the upper compensating swing assembly incorporates a sliding counterweight for adaptive buffering and vibration reduction. This invention features a purely passive structure, simple maintenance, adaptability to different sea conditions and loads, and overspeed self-locking protection, effectively improving the stability and operational safety of marine lifting.

This joining structure for an automobile frame member is provided with: a first member having a top plate, two vertical walls, two first ridge parts, and a continuous flange; the second member has a first wall surface facing an axial end portion of the first member, a second wall surface extending from the first wall surface to a side opposite to the first member side, and a second ridge line portion sandwiched between the first wall surface and the second wall surface, and in the continuous flange, a distance h between the second ridge line portion and the top plate satisfies-10 mm < = h < = 10 mm, and a distance h between the second ridge line portion and the top plate satisfies-10 mm < = h < = 10 mm. Angles theta formed by a surface perpendicular to the top plate and the two longitudinal walls respectively meet the condition that theta is larger than or equal to 20 degrees and smaller than or equal to 45 degrees.

The application discloses a kind of gob-side entry retaining support structure and construction method of steeply inclined coal seam fully mechanized working face.The support structure is arranged in the transport roadway near the side of goaf, including anchoring load-bearing parts, net body gangue retaining parts, restraint reinforcement, pre-stressed locking parts and flexible sealing material;Anchoring load-bearing parts are laid in the roof and bottom corner surrounding rock, net body gangue retaining parts are hung on the exposed section of anchoring load-bearing parts and cover along the whole height of roadway, restraint reinforcement is overlaid on the outside of net body and is connected with anchoring load-bearing parts, pre-stressed locking parts are set on the end of anchoring load-bearing parts and pre-tightening force is applied to form support base surface, and flexible sealing material is sprayed on the support base surface for sealing.The construction method includes drilling anchoring, hanging net body, installing restraint reinforcement, locking pre-tightening, spraying sealing.The application realizes the integration of support structure, has good gangue retaining and sealing effect, adapts to steeply inclined coal seam working condition, is convenient to construct and can be operated synchronously with mining, effectively improves the safety and reliability of gob-side entry retaining, and reduces the cost of mining.

The car seat backrest frame (1) comprises: a first side frame (2) and a second side frame (3) separately arranged in the vehicle width direction; an upper frame (4) connecting the upper end (2a) of the first side frame (2) and the upper end (3a) of the second side frame (3); and an upper bracket (7) mounted on the upper end (2a) of the first side frame (2) and guiding the seat belt. The first side frame (2) is an extruded part extending in the vertical direction of the vehicle, and its lower end (2b) is fixed. The first side frame (2) has a closed section (10) in a cross section perpendicular to the vertical direction of the vehicle. The upper end (2a) of the first side frame (2) is crushed towards the rear of the vehicle, and the thickness of the upper end (2a) in the longitudinal direction of the vehicle is smaller than that of the lower end (2b).

The utility model discloses a kind of ladder installation reservation structure of prefabricated inspection well, including the pre-embedded cavity of two ends opening, pre-embedded cavity is installed in the well wall of prefabricated inspection well and one end opening flush with well wall inner side, the top of the bottom surface of pre-embedded cavity is spaced apart and provided with multiple horizontal limit plates, and the outer end of horizontal limit plate is fixed on the side wall of pre-embedded cavity.The ladder installation reservation structure of prefabricated inspection well of the utility model, by custom pre-embedded cavity, horizontal limit plate and vertical limit plate, provide special installation space and positioning guarantee for ladder, ladder positioning is accurate, support ladder in factory standardization installation, save later-stage drilling, reinforcing bar process, avoid to destroy well wall integrity, pre-embedded cavity uses modular design, installation operation is convenient and efficient, to build structure overall strength, construction efficiency is high, the ladder system of excellent safety.

The utility model relates to the technical field of buildings and new energy, in particular to a novel roof additional photovoltaic supporting structure. The structure comprises a curved beam, a supporting rod, a tensioning cable, a supporting round rod, a metal sleeve, a structure connecting device, a support and the like. The photovoltaic assemblies are installed on the supporting round rods, the tensioning cables are connected with the curved beams through the structure connection devices, stress distribution is optimized by reasonably controlling prestress in the tensioning cables, and roof loads are reduced. The supports are connected with the curved beams through pins, so that the stability and the flexibility of the roof additional photovoltaic supporting structure are ensured. The utility model has the advantages that the stress distribution of the roof can be effectively optimized, the self-weight load is reduced, the construction process is simplified, the damage to the outer surface of the roof is avoided, and the complex reinforcement of the building structure is not needed. The structure is suitable for roofs, such as large-span plants and warehouses, which are not accessible to people, has wide application prospects and remarkable economic benefits, and provides an innovative solution for efficient and safe installation of a photovoltaic power generation system.

The utility model discloses an adjustable pressure reduction prying frame which comprises two sets of end beams and two sets of side beams, the two sets of end beams are fixedly installed at the left end and the right end between the two sets of side beams, a movable supporting frame is connected between the two sets of side beams in a sliding mode, and sliding grooves are formed in the inner walls of the side beams. Through grooves are formed in the outer walls of the side beams, sliding blocks are fixedly installed on the outer surfaces of the two ends of the movable supporting frame, locking assemblies are installed on the sliding blocks, each locking assembly comprises a threaded rod, an anti-sliding block and a rotating head, and a mounting cavity is formed in the end, close to the movable supporting frame, of each sliding block; threaded holes are formed in the middles of the outer surfaces of the ends, away from the movable supporting frame, of the sliding blocks. According to the adjustable pressure reducing pry carrying frame, the position is convenient to adjust through the arranged movable supporting frame, so that better conditions can be provided when a pressure reducing pry is assembled, the pressure reducing pry is more flexible to assemble, and the applicability is better.

This invention relates to a welding device for steel cages used in the production of utility poles. The device includes a welding lathe with a CNC positioning frame mounted on top. A welding device is fixedly connected to the outer side of the CNC positioning frame, and a welding head is fixedly connected to the bottom of the welding device. Multiple sets of positioning clips for fixing the ends of the steel cage for the utility pole are mounted on the top surface of the welding lathe. The welding head includes a laser emitter fixedly installed at the output end of the welding device. A straight cylindrical welding nozzle is sleeved on the outer side of the laser emitter, and an inner cylinder is provided at the bottom of the laser emitter. The inner cylinder includes three arc-shaped alloy lobes slidably connected to the bottom of the laser emitter. This invention achieves a gradual weld formation, which results in a more uniform stress distribution along the entire length of the weld, eliminating local stress peaks found in traditional equal-width welds. This prevents weld cracking during centrifugal forming, hoisting, and long-term service of the utility pole, and improves the load-bearing capacity and structural stability of the welded joints of the steel cage.