44results about How to "Improve wind and earthquake resistance" patented technology

The invention discloses a magneto-rheological semi-active damper with adjustable stiffness. The damper comprises an outer annular cylinder fixed on the inner wall of a container and an inner cylinder;scrollable balls are arranged between the lower portion of the inner cylinder and a bottom plate of the device, and the inner cylinder and the outer annular cylinder are filled with a magneto-rheological liquid respectively; hollow spring pipes are connected between the cylinder walls of the inner cylinder and outer annular cylinder, the inner cylinder and the outer annular cylinder are communicated with each other through the hollow spring pipes, the magneto-rheological liquid can flow in the inner cylinder and the outer annular cylinder through the hollow spring pipes, the outer portions ofthe spring pipes are provided with magnet exciting coils, the magnet exciting coils, controllers and a solar panel arranged at the outer side of the upper portion of the container are connected in series to form a closed loop circuit, the controllers receive signals of acceleration sensors to control the current in the magnet exciting coils, thereby adjusting the stiffness of the hollow spring pipes and achieving the horizontal damping control; limiting plates are arranged between the outer annular cylinder and the inner cylinder to prevent the inner cylinder from being displaced too much; damping nets are arranged in the outer annular cylinder, and the torsion damping control is achieved through damping force.

The invention discloses a self-powered type magneto-rheological damping device which comprises an outer barrel, wherein two inner barrels are fixed in the outer barrel, and the insides of the inner barrels are hollow to form damping cavities; a ball screw pair is arranged between the inner barrel, rigid rods are respectively connected to the two ends of the ball screw pair, and the two rigid rodspenetrate through the damping cavities to be connected with an inner wall of the outer barrel; a plurality of blades are fixedly arranged on the parts, in the damping cavities, of the rigid rods, theinner barrels are filled with magneto-rheological fluid, and the outsides of the inner barrels are wound by electrified coils; a movable device connected with the ball screw pair is arranged under theball screw pair, a mass block is arranged in the movable device, steel plates are arranged at the two sides of the mass block, magnets are arranged on a lateral wall of the movable device, and the steel plates are located among adjacent magnets; rotors are in interference fixed connection to the peripheries of the rigid rods, and each rotor is composed of a permanent magnet and a rotor magnet yoke; a stator core is arranged at the periphery of each rotor, a stator winding is arranged on each stator core, a stator shell is fixedly connected to the outside of each stator, and the stator shellsfixedly contact outer walls of the inner barrels.

The invention discloses a semi-active magneto-rheological tuned mass damper. The semi-active magneto-rheological tuned mass damper comprises a barrel body; a connection block is arranged in a bottom plate of the barrel body; and a working cylinder is fixed to the connection block. Separation plates are arranged in the working cylinder, and the working cylinder is divided into a center cavity, damping cavities and side cavities. The center cavity is internally provided with a mass block capable of horizontally moving in the axis direction of the axis of the working cylinder. The center of the mass block is provided with a groove and a rolling bearing, and the periphery of the mass block is connected with piston rods capable of sliding along the rolling bearing. The damping cavities are internally provided with pistons, and the pistons are fixedly connected to the piston rods. The piston rods penetrate through holes reserved in the partition plates, extend into the side cavities and areconnected with one ends of springs in the side cavities. The other ends of the springs are fixedly connected into the working cylinder. The damping cavities are filled with magneto-rheological fluid,and powered-on coils are wound around the damping cavities. The powered-on coils are connected with an induction control device inside the barrel body.

The invention discloses a temperature-controlled intelligent tuned inertial mass damper. The damper is composed of two parts, namely a working cavity temperature control part and a main damper body part. The working cavity temperature control part comprises a temperature monitoring part and a temperature adjusting part. The main damper body part comprises an SMA spring and an inertial mass damperbody connected with the SMA spring through a rack, the rack is connected with a driving gear, the driving gear is in contact with a follow-up flywheel, the follow-up flywheel is connected with a cylinder, and the cylinder is located in a box body filled with viscous liquid. According to the temperature-controlled intelligent tuned inertial mass damper, the inertia force of the damper body can be increased by converting axial motion into rotary motion, and on the premise of ensuring the damping effect, the mass of the damper body is reduced. The damping and stiffness of the SMA spring can alsobe adjusted in real time by changing the temperature, so that the damper body has the stable working performance in a wide frequency domain, and therefore the good damping effect is achieved.

The invention discloses a universal semi-active magnetorheological damping device. The universal semi-active magnetorheological damping device comprises an inner cylinder, an outer cylinder and a rotary disc and is characterized in that the inner cylinder is fixed onto the rotary disc, and the inner cylinder can rotate in optional directions under the effect of the rotary disc; the rotary disc isconnected with an induction control device; a connecting block is arranged inside an inner cylinder bottom plate, and a working cylinder is fixed on the connecting block; partitions are arranged inside the working cylinder to separate the interior of the working cylinder into a central cavity and damping cavities; a mass block which can horizontally move along the axis direction of the working cylinder is arranged in the central cavity; the mass block is fixedly connected with a piston rod which can axially move along the working cavity; a piston is arranged inside each damping cavity, and thepiston rod penetrates through holes reserved in the partitions and extends into the damping cavities to be fixedly connected with the pistons; shape memory alloy springs sleeve the piston rod locatedin the working cavity, one end of each spring is fixedly connected to the mass block, and the other end of each spring is fixed to the corresponding partition; each damping cavity is filled with magnetorheological fluid, an energizing coil wind the outside of each damping cavity, and the energizing coils are connected with the induction control device.

The invention relates to a straw-steel fabricated wall connecting device and a connecting joint manufacturing method. At present, demands of people for office buildings and housings are increased yearby year, the form of construction is mostly reinforced concrete, the construction process is cumbersome, the destructiveness is high, and demolition objects are difficult to reuse. The straw-steel fabricated wall connecting device comprises a fabricated wall (11). The fabricated wall is divided into a left side wall body (1) and a right side wall body (2). The left side wall body is welded to twosliding self-locking structures. The right side wall body is welded to three sliding self-locking structures (3). The middles of the left side wall body and the right side wall body are provided withgrooves A (7) and convex parts A (8). The interior of each sliding self-locking structure is provided with sliding hollow metal (4). The side edge of each sliding hollow metal is provided with a sliding way (5) and a groove B (6). The upper edge of each sliding hollow metal is provided with a convex part B (12).

The invention relates to a light steel concrete prestress combined type wind power tower drum section and a wind power tower thereof. The light steel concrete prestress combined type wind power tower drum section comprises a plurality of mutually spliced arc-shaped prefabricated tower drum section fragments, and each prefabricated tower drum section fragment comprises an arc-shaped plate and light steel pipes fixedly mounted on the upper side and the lower side of the arc-shaped plate; stress holes facilitating penetration of prestressed tendons are arranged on the arc-shaped end faces of the light steel pipes; each arc-shaped plate comprises a curved corrugated steel plate, reinforcing meshes arranged on the two sides of the corrugated steel plate and concrete poured on the outer sides of the reinforcing meshes, and through holes facilitating mutual circulation of the concrete on the two sides of the corrugated steel plate are arranged on the corrugated steel plate; and fastening devices are fixedly installed between the adjacent prefabricated tower tube section fragments. The prestress combined type wind power tower tube section has the advantage that the tower tube section can be assembled and poured on site.

The invention discloses totally-closed steel clad wood for a cold-formed thin-walled steel house. The totally-closed steel clad wood comprises a whole wood beam and high-strength galvanized steel. The whole wood beam is used for filling of totally-closed steel clad wood bodies, and the whole wood beam with the size being 88mm * 88mm (sum of positive deviation and 2mm) and the length being 3m or 4m or 6m is selected as the whole wood beam. The high-strength galvanized steel fixedly wraps the outer side of the whole wood beam, and high-strength galvanized steel materials with the width being 360mm and the thickness being 0.8mm or 1.0mm are selected as the high-strength galvanized steel and used for overall wrapping of the whole wood beam. After the high-strength galvanized steel comprehensively wraps the whole wood beam, the stability, safety and durability of a building structure are greatly improved. At the large-span position, the corner position and a door and window opening of the cold-formed thin-walled steel house building, the multiple totally-closed steel clad wood bodies are assembled into a high-strength steel clad wood stand column used for a stand column and a cross beam in the cold-formed thin-walled steel house building process, and therefore the supporting and pulling functions are achieved, and the structure of the cold-formed thin-walled steel house is more stable.

The invention provides a clamp assembly of a window structure, the window structure and a cable net curtain wall. The clamp assembly comprises a first component and a second component, the first component is provided with a first inhaul cable clamping part, a first inhaul cable clamping position is formed on the first inhaul cable clamping part, the second component is provided with a first glass clamping part, and the first glass clamping part is provided with a first glass clamping position and a second glass clamping position which are perpendicular to each other. The first component and the second component are in sliding fit in the gravity direction. The window structure comprises a frame body, a first clamp, a second clamp and a blade, a plurality of glass frames of the frame body are connected through the first clamp and the second clamp, and the first clamp is the clamp assembly. The cable net curtain wall comprises the window structure. According to the cable net curtain wall, the overall full-transparent appearance of the cable net curtain wall is achieved, when the inhaul cables generate flexible deformation, the clamp assemblies can absorb deformation through movement, acting force is prevented from being transmitted to a window structure, and it is guaranteed that the window structure is stable and reliable.

The invention discloses a plane outer sunshade door and window. The plane outer sunshade door and window is characterized in that a vehicle frame capable of moving up and down along a door and windowvertical frame is arranged in a door and window frame defined by an upper transverse frame, a lower transverse frame, a vertical frame, a plurality of louvers are connected with the vehicle frame through a steel cable, the vehicle frame is connected with a lifting hand cranking device through a steel cable lifting mechanism, and lifting of the vehicle frame and the louvers is controlled by the lifting hand cranking device; the fact that the louvers are raised and lowered can be achieved, and the louvers can be adjusted to rotate through a louver angle adjuster so that the louvers rotates to achieve the opening and closing functions of 0-120 degrees; and lifting of the louvers is adjusted through the lifting hand cranking device, the overall structure of the sunshade door and window is stable and firm, the connection between the components is tight, safe and reliable, and the plane outer sunshade door and window can withstand the harsh weather conditions such as outdoor fierce wind.

An agricultural windproof and shockproof plastic greenhouse comprises a plastic film, a damping air cushion, an outer keel frame, a reinforcing device and an inner keel frame, the outer side of the inner keel frame is covered with the plastic film, the two ends of the inner keel frame are provided with opening covering films connected with the plastic film, and the outer side of the plastic film is sleeved with the outer keel frame; a reinforcing device for improving strength is arranged at the bottom of the outer keel frame, a damping air cushion is arranged on the outer side of the plastic film and comprises a supporting air pipe and an air supporting pipe, the air supporting pipe is connected with the lower end of the plastic film and is of an arc-shaped structure, and the supporting air pipe is arranged on the outer side of the plastic film in a sleeving mode and communicates with the air supporting pipe. The inner side of the plastic film is supported by the inner keel frame, theouter side of the plastic film is pressed and fixed by the outer keel frame, the stability of the whole greenhouse can be guaranteed, the wind resistance is improved, the shock absorption air cushionis arranged on the outer side of the plastic film, and the shock absorption effect can be achieved through the shock absorption air cushion.