51results about How to "Reduced design strength" patented technology

A transmission is provided which has a very compact system configuration and is capable of exerting high energy efficiency over all speed regions from a low speed region to a high speed region, while providing improved operability free from a torque shortage. To this end, the transmission has an input shaft, an intermediate output shaft, a planetary gear mechanism, a first pump-motor, and a second pump-motor connected to the first pump-motor, the input shaft being coupled to a first element of the planetary gear mechanism, the second pump-motor being coupled to a second element of the planetary gear mechanism, the intermediate output shaft being coupled to a third element of the planetary gear mechanism, and the transmission further comprising a switching mechanism for selectively coupling the first pump-motor to either the input shaft or the intermediate output shaft.

A combined granulator, comprising a multilayer combined box body (11), a temporary feed storage bin (01), and multiple layers and groups of rolling mills. Each group of rolling mills is provided with a rotary joint (04), a cleaning blade (05), an elastic stripping frame (14), a material baffle (07), and a guide plate. The box body is further provided with a waste gas evacuation port (03), and a support is provided with an air inlet (12) at the lowest layer of the granulator. The tooth surface linear velocity and the volumetric flow rate of a rotating drum of each rolling mill (08) at the second layer are higher than those of a rotating drum of each rolling mill (02) at the first layer; the ratios of the tooth surface linear velocities and the volumetric flow rates of the rotating drums having meshed tooth slots or individual radial tooth slots of adjacent rolling mills at the lower layer can be adjusted according to the volume of materials in the region. The granulator can not only strip hard foreign matters, but also simply granulate a soft material, such as cream, paste, and slurry. In addition, the granulator can also directly pull caky and blocky materials into monomer granules, so that soft and hard materials can simultaneously enter the granulator, and granules at an outlet are porous and irregular in shape.

The invention discloses an active X-shaped double-row pile foundation pit supporting method. The active X-shaped double-row pile foundation pit supporting method comprises the following steps of (1) driving front-row vertical support piles to the pile bottom designed elevation along the inner side of the edge of a foundation pit, driving inclined rear-row support piles to the pile bottom designedelevation in the pit and meanwhile arranging a water isolation curtain behind the rear-row support piles; (2) arranging a jack on the pile top of each rear-row support pile; (3) arranging crown beamson the front-row vertical support piles and the rear-row support piles, and connecting the crown beams on the front-row vertical support piles and the rear-row support piles into a whole though connecting beams; and (4) excavating a soil body surrounded by the front-row vertical support piles and the rear-row support piles to the pit bottom designed elevation and applying control expansive force to the rear-row support piles through the jacks so as to reduce displacement of the soil body and the pile tops. Through the active X-shaped double-row pile foundation pit supporting method, the displacement of the pile tops can be reduced to a great extent, the bending moment of pile bodies can be reduced, the construction cost can be reduced, the excavation depth can be increased, and the possibility of collapse and damage to the foundation pit can be reduced.

A mechanical assembly for securing a first sheet to a second sheet includes a first projection having a first sidewall and a first top wall. The first sidewall extends from the first top wall at a first acute angle. The first sidewall includes a first top end and a first bottom end. A first discontinuity is defined in the first sidewall between the first top end and the first bottom end. A first base wall extends from the first bottom end. The first base wall extends generally parallel to the first top wall.

The invention belongs to the technical field of wall joint connection fabrication in building structure engineering, and particularly relates to a prefabricated built-in thermal insulation layer foamed concrete composite wall-light steel frame-floor slab connecting joint. A composite wall is installed in a semi-embedded mode, a built-in thermal insulation layer and inner page foamed concrete are embedded into a light steel frame, and outer page foamed concrete externally covers light steel frame beams and columns. Compared with a traditional prefabricated wall, the wall of the prefabricated built-in thermal insulation layer foamed concrete composite wall-light steel frame-floor slab connecting joint can be used as a structural force-bearing member to transfer loads between the frame beamsand columns, participates in the structural stress of a house and improves the bearing capacity and seismic capacity of the house, and a wall panel is externally wrapped with the steel frame beams andcolumns to effectively reduce the corrosion of steel. According to the composite wall-light steel frame-floor slab joint, bolt holes are prefabricated between components, and bolts are connected intothe bolt holes in a penetrating mode during assembly to realize the connection. The joint is simple in structure form, the connection is reliable, the construction is easy, and the joint can be usedin practical engineering to effectively shorten the construction period and is suitable for widespread popularization and application in low-rise multi-storey light steel frame structures.