42results about How to "Reduce horizontal thrust" patented technology

The invention discloses a rotary intersection cable system supporting dome structure, and belongs to the field of large-span spatial structures. The rotary intersection cable system supporting dome structure is composed of an upper reticulated shell, lower rotary intersection cable systems and vertical supporting rods. The lower rotary intersection cable systems are of an annular structure defined by a plurality of cable intersected dispersing points. The vertical upper ends of the vertical supporting rods are connected with the upper reticulated shell, and the lower ends of the vertical supporting rods are connected with the lower rotary intersection cable systems. The upper end of each vertical supporting rod is connected with a corresponding reticulated intersection in the upper reticulated shell, and the lower end of each vertical supporting rod is connected with the cable cross portion of the corresponding lower rotary intersection cable system. According to the rotary intersection cable system supporting dome structure, the rotary intersection cable systems and the vertical supporting rods have good space stress performance, the upper reticulated shell is supported, the stress mechanisms of the reticulated shell structure is changed, and horizontal thrust generated by the reticulated shell structure is reduced. The rotary intersection cable system supporting dome structure has the advantages of being novel in structural style, reasonable in structure stress, high in progressive collapse resisting capacity, attractive in building appearance and the like, is convenient to manufacture and mount, and has high practical significance.

The invention relates to a device for improving the degree of security of foundation ditch construction and a method thereof. The device comprises a lifting anchor rod, an inhaul cable and supporting equipment, wherein the lifting anchor rod is vertically plunged into a soil body at the periphery of a foundation ditch; the lower end of the inhaul cable is connected with the lifting anchor rod, and the upper end is fixed on the supporting equipment; and the supporting equipment exerts a vertically upward pull for the lifting anchor rod through the inhaul cable. For the device for improving thedegree of security of foundation ditch construction, the lifting anchor rod is plunged into the soil body at the periphery of the foundation ditch, and the inhaul cable exerts the vertically upward pull for the lifting anchor rod so that the lifting anchor rod can exert the vertically upward pull for the soil body at the periphery of the foundation ditch, the soil body at the periphery of the foundation ditch can be prevented from sinking under the action of the gravity thereof, the probability of proruption of the soil body in the foundation ditch can be reduced, the horizontal thrust of thesoil body outside the foundation ditch to the inside of the foundation ditch can be also reduced, and the degree of security of the foundation ditch can be generally improved.

The invention relates to the technical field of photovoltaic power generation. A photovoltaic power generation device with a flexible support includes a base plate, the base plate has a bearing and a first drive motor, the first drive motor has an active ring gear, the bearing has a straight rod, and the straight rod has driven teeth. The driven ring gear is connected with the driving ring gear, the straight bar has a rotating plate, the rotating plate has a connecting plate, the straight bar has a stabilizing structure and an angle adjustment structure, the connecting plate has a supporting frame, the supporting frame has a groove, and the supporting frame passes through the concave The slot is connected to the photovoltaic power generation board, the photovoltaic power generation board has a plug, the groove has a slot, the plug is plugged into the slot, the support frame has a second spring, the second spring has an insertion rod, and the insertion rod is plugged into the plug. The support frame has an outer cover, the outer cover has a second driving motor, the second driving motor has a threaded rod, and the threaded rod has an L-shaped slide plate, and the top surface and the bottom surface of the outer cover are respectively fixedly equipped with a photosensitive sensor and a controller. The sun is at the best receiving angle, which helps the photovoltaic panels to maximize power generation.

The invention discloses an M-shaped support system of a derrick for a sheave platform shaped like a Chinese character mu, comprising a node I, a reversed V-shaped support, a node II, a small horizontal support, a small vertical support, a node III, a trapezoidal support, an M-shaped support I, a sheave platform shaped like a Chinese character mu, a small trapezoidal support body, a sheave platform shaped like a Chinese character ri, a sheave room, a node IV, an M-shaped support II, a large crossbeam, a node V and a node VI, etc. The trapezoidal support, the large crossbeam and the node III are connected into a trapezoid; the lower end of the M-shaped support I on the large crossbeam is connected with the node III, and the upper end is connected with the node III; the M-shaped support II, the node V, the M-shaped support II, the node IV, the M-shaped support I and the node III are connected in sequence into the M-shaped support system. Adopting the M-shaped support system, the derrick for the sheave platform can be stressed reasonably. Compared with the traditional reversed V-shaped support system, the M-shaped support system can reduce the span of the beam of the sheave platform and well control the size and the deformation of the section of the beam of the sheave platform.

The invention provides a method for constructing a roof drain through adopting a geotechnical formwork technology. The method comprises the steps of constructing the roof drain after raised curbs are installed, pre-baking a clay model and a concrete model in the position of the roof drain before a roadbase and a lower asphalt surface layer are constructed, manually digging a pre-baked formwork out after the lower asphalt surface layer is completely constructed, and constructing and reinforcing the roof drain; laying the bricks of the roof drain through adopting a three-one bricking method, i.e. one shovel of concrete, one brick and one compression; and reinforcing the roof drain through adopting a support fixing and seat suspending method. The method has a process of construction preparing, layered clay model baking, roadbase constructing, layered concrete model baking, lower road layer constructing, manual concrete model and clay model digging, roof drain constructing, lintel and rain grate installing, roof drain reinforcing, plastering and pointing and acceptance inspecting. Compared with a conventional technology, the method can be used for effectively overcoming the quality defects of uneven distances between the roof drain and the raised curbs, sedimentation, bumping in a car running process, abnormal sounds and the like, the working efficiency is increased, the construction period is shortened, and the material waste is reduced.

The invention belongs to the technical field of missile launching and especially relates to a device for performing fuel gas guidance for vehicle-mounted missile launching. According to the technical scheme, the vehicle-mounted missile launching double-arc fluid director comprises a fluid director and a base; the fluid director comprises an upper linear segment, a small arc segment, a big arc segment and a lower linear segment which are connected with each other in turn; the base is used for connecting the fluid director with a launcher. According to the invention, the problem of ultrahigh horizontal impact of the fuel gas flow to the launcher in the process of low-angle missile launching can be solved; the guidance of a double-arc fluid guiding surface to the fuel gas flow is adopted for preventing the ablation and impact of high-temperature high-rate fuel gas flow to the missile and the launcher while lowering the maintenance cost of the launching equipment; due to the design of the double-arc fluid guiding surface, the horizontal push force endured by the launcher is reduced and the stability of the launcher is increased, so that the launching precision, the launching efficiency and the reliability can be guaranteed.