222results about How to "Improve reset ability" patented technology

Provided is a collaborative energy dissipation anti-buckling supporting construction member with a major earthquake protection function. An outer arresting cylinder encloses an energy dissipation inner core plate from the outer portion, an end portion connecting plate and an outer arresting cylinder outer connecting plate are arranged at two ends of the outer arresting cylinder, one end of the outer arresting cylinder is fixed on the end portion connecting plate, the other end is free from being connected, one end of the energy dissipation inner core plate is fixed on the end portion connecting plate, the other end of the energy dissipation inner core plate is connected with the end portion connecting plate in a welded mode, the end portion connecting plate is fixed on the outer arresting cylinder outer connecting plate, the energy dissipation inner core plate is connected with a friction automatic restoration device through an outer arresting cylinder outer connecting plate of a welding end, and thus series connection between a traditional anti-buckling supporting construction member and the friction automatically reset device is achieved to form the novel anti-buckling supporting construction member which has an automatic restoration characteristic and can achieve friction and cross-section yield collaborative energy consumption in an over-expected earthquake even a mega-earthquake. The problems of safety, continuous energy dissipation ability and restoration after the earthquake of the traditional anti-buckling supporting construction member in the over-expected earthquake even the mega-earthquake are resolved.

The invention provides a shape memory alloy (SMA) group rolling rod type large load releasing mechanism. A segmented nut of the mechanism is firmly hooped by a hooping cylinder through rolling rods, simultaneously the upper end face and the lower end face of the segmented nut are respectively matched with an end cover and a separating ejector block, so that the segmented nut is a total nut and cannot move vertically. Groove are arranged on the segmented nut, so that when separation is needed, and the hooping cylinder moves downwards to drive the rolling rods to roll downwards and properly enter the grooves of the segmented nut when moving to a certain position, so that the segmented nut can obtain radial displacement. When releasing is finished, the hooping cylinder moves upwards under the effect of an SMA reset spring and simultaneously push the rolling rods out from the grooves, and the segmented nut draws close toward the inside to form an integral thread, so that repeated using function of the mechanism can be achieved, the segmented nut is fit with the separating ejector block through a conical surface, and the separating ejector block is matched with the hooping cylinder through two end faces. The shape memory alloy (SMA) group rolling rod type large load releasing mechanism is strong in shock resistance, releases large load and has the redundancy design and high reliability.

The invention relates to a reset type SMA piezoelectricity-friction mixed damper, comprising a damper box, wherein a piezoelectric ceramic actuator box with a piezoelectric ceramic actuator is arranged in the damper box, a vertical left sliding plate is arranged on the left side of the piezoelectric ceramic actuator box, a vertical right sliding plate is arranged on the right side of the piezoelectric ceramic actuator box, the upper end and the lower end of the left sliding plate stretch out from a left chute in the damper box, the upper end and the lower end of the right sliding plate stretch out from a right chute in the damper box, and an SMA wire is connected between the left sliding plate and the right sliding plate outside the damper box; reset springs are arranged between the left side wall of the damper box and the left sliding plate and between the right sliding plate and a fixed baffle in the damper box; and an actuating rod sequentially passes through the left side wall of the damper, the left sliding plate, the piezoelectric ceramic box, the right sliding plate and the fixed baffle to be fixed with the left sliding plate and the right sliding plate by a left clamping ring and a right clamping ring on the actuating rod. The damper is simple in structure, convenient to process, strong in energy dissipating capability, and good in control effect, and can be effectively applied to the field of energy dissipation and seismic mitigation.

The invention discloses a combined ball shock insulation support. The combined ball shock insulation support comprises an upper connecting plate, a limiting plate, a positioning plate, a ball cover plate, balls, a ball distance limiting plate, a base plate, reset rubber, a limiting positioning column, a reset positioning bolt, a positioning ball, a positioning ball support, a positioning spring, a movable lever, a movable lever support and the like. An earthquake time fixed layer is formed by the upper connecting plate, the positioning plate and the ball cover plate, an integral is formed by the earthquake time fixed layer and a building, an earthquake time moving layer is formed by the base plate, the movable lever support and the movable lever, an integral is formed by the earthquake time moving layer and the ground, a rolling shock insulation layer is formed by the balls and the ball distance limiting plate, the shock insulation capacity is high, the energy produced by the earthquake can be isolated by the rolling shock insulation layer and is not transmitted to the building, the balls can be isolated through the ball distance limiting plate, and damage of the balls due to friction and extrusion is avoided. The movable lever is pressed on the limiting plate, the tension resisting capacity is greatly improved, and the overall bearing intensity is large. A pencil lead is added into the reset rubber, and therefore the reset performance of the reset rubber is greatly improved.

The invention relates to an annular frictional rotating shockproof supporting base. The annular frictional rotating shockproof supporting base comprises an upper cover plate, a rotating rigid body, an annular frictional wall, a buffer spring, a suspending steel block, and a base; the lower part of the upper cover plate is provided with a convex hemispheroid, the upper part of the rotating rigid body is provided with a groove, and the convex hemispheroid is meshed and contacted with the groove; the center of the lower part of the rotating rigid body is provided with a spherical groove, and the spherical groove is in supporting connection with the hemispheroid to form rotating contact in every direction; the overall side face of the rotating rigid body is provided with a spherical face and forms a frictional contact with the annular frictional wall; when the rotating rigid body is rotated, the rotating rigid body rubs the annular frictional wall to dissipate the earthquake energy; one ring at the bottom part of the rotating rigid body is provided with a vertical buffer spring, and the other end of the buffer spring is connected with the suspending steel block; the suspending steel block is placed in a block opening of the base, and the thickness of the suspending steel block is less than the height of the block opening; when the rotating rigid body is rotated to a certain position, the buffer spring can upwards raise up so as to drive the suspending steel block to upwards move; when the buffer spring is contacted with the block opening, the buffer spring is stretched to limit the movement of the rotating rigid body.

The invention provide a three-limit time-base circuit composed of analogue integrated circuit operational amplifier A (or voltage comparator B), few separate electronic elements by using new principleand ingenious connection mode. The three-limit time-base circuit has top and bottom limit main control functions completely compatible to all functions of classic 555 time-base circuit can be used asultra-top and bottom limit control circuit and astable, monostable and bistable circuit. The invention increases exceed bottom limit protection and control function, when inputted sensing circuit hasfault, fault display and protection control can be executed in time to prevent the main control circuit from being out of control. The invention, used in control circuits for temperature, pressure, water level etc., may improve security, and prevent severe accidents (such as fire hazard). So, the invention has wide use in electronic application field such as household electrical appliances, simple controllers, and high cost performance of products are provided.

The invention provides a friction-lead composite damper which comprises a lead shear damper and a friction amplification damper, the lead shear damper and the friction amplification damper are connected in series through a drive connecting rod, and therefore serial connection between the traditional lead shear damper and the friction amplification damper is achieved. After serial connection, end portion fixing plates are arranged on an outer box of the friction damper and the end portion of an outer plate of the lead shear damper, and therefore the novel friction-lead composite damper which has large stroke and a self-restoration characteristic is formed, wherein the novel friction-lead composite damper can protect the lead damper against shear damage under the condition of large deformation, the friction amplification damper can continue to carry out energy consumption, and an automatic restoration function after an earthquake can be achieved. The friction-lead composite damper solves the problems of large deformation, poor continuous energy consumption ability and poor restoration after the earthquake of the traditional lead shear damper.

A method and device for determining a roll angle for occupant protection devices. Transverse acceleration and vertical acceleration of a vehicle are detected, and the roll angle of the vehicle is estimated on the basis of the detected lateral acceleration and the detected vertical acceleration, additional driving dynamics quantities, including a vehicle speed, a yaw angle and a float angle being determined, and centripetal acceleration being calculated from these driving dynamics quantities, formula, to improve the estimate of the roll angle.

A method for determining the roll angle for occupant protection devices and a corresponding device are described. A transverse acceleration and a vertical acceleration of the vehicle are detected, and the roll angle of the vehicle is estimated based on the detected transverse acceleration and the detected vertical acceleration.

The invention discloses a rapid exhausting valve for an agriculture irrigation pipeline and relates to the technical field of rapid exhausting valves. The rapid exhausting valve comprises a valve body. A sliding plate is arranged in the valve body. First sliding grooves are formed in the inner top wall and the inner bottom wall of the valve body correspondingly. Two symmetrical fixing rods are fixedly connected to one side face of the sliding plate. Fixing blocks are fixedly connected to the side faces, away from each other, of the two fixing rods correspondingly. First sliding blocks matchedwith the first sliding grooves are fixedly connected to the side faces, away from each other, of the two fixing blocks correspondingly. The first sliding blocks are clamped into the first sliding grooves. According to the rapid exhausting valve for the agriculture irrigation pipeline, the effect of driving the sliding plate to move left and right through air pressure is achieved, the function of driving a piston plate to slide through the sliding plate is possessed, an air output pipe can be blocked or opened, and air can be exhausted or used. The rapid exhausting valve has the advantage of being convenient to use, the situation of shaking of the piston plate in the sliding process is prevented, and the overall resetting performance is improved.

The invention discloses a hardware watchdog realization method based on an MCU (Micro-programmed Control Unit). The method comprises the steps of setting a corresponding MCU-based watchdog pin according to a needed watchdog function, distributing a time-out counter, an interrupt counter, time-out time and a resetting level time sequence; then receiving an external activation signal sent by a processor on monitoring equipment, beginning to count by the time-out counter; meanwhile judging whether the time-out counter performs a zero clearing operation according to the situation whether a periodic dog-feeding signal sent by the processor is received, and completing the monitoring for the running state of the processor. The method is good in openness, adjustable in control parameters, wide in application range, low in cost and simple in structure, improves the monitoring and resetting capabilities of an MCU-based hardware watchdog and reduces an area of an occupation circuit.

The invention provides a self-restoring ductility steel support adopting shape memory alloys (SMA). The support is mainly composed of rectangular steel plates, end plates with openings, steel pipes with holes, movable slide blocks, SMA bundles/wires and corresponding connecting parts. One ends of the rectangular steel plates are welded, and the other ends of the rectangular steel plates are clamped to the end plates through end anchorage devices. Through contact force transmitting, the slide blocks are arranged at the holes of the steel pipes, and the SMA bundles/wires are symmetrically wound onto the upper portions of the slide blocks. When moving relative to the steel pipes, the inner support bodies consume energy and provide stiffness and the bearing capacity through the two sets of tensile rectangular steel plates achieving pinch hysteretic characteristics, and the restoring function of the SMA bundles/wires wound onto the slide blocks at a tensile state all the time is achieved. The self-restoring ductility steel support adopting the SMA has the advantages of being good in storing capacity, high in axial deformation capacity, large in axial stiffness, high in bearing capacity, low in manufacturing cost, convenient to construct and the like. The self-restoring ductility steel support adopting the SMA is suitable for serving as a main lateral force resisting component of an aseismic structure and has wide engineering application prospects in an seismic fortified area.

The invention discloses a self-resetting double-bow opposite-pull double energy dissipation supporting device. A belleville spring is adopted as a reset system, an arc-shaped steel plate is used as ametal energy dissipation element, in the case of the metal energy dissipation element, the arc-shaped steel plate belongs to a bending yield energy dissipation type, compared with other traditional metal energy dissipation modes, the energy dissipation performance of the arc-shaped steel plate is stable, damaged positions of the element are easy to control, in addition, the arc-shaped steel plateenergy dissipation element is easy to replace after an earthquake, recycling of integral support is realized, the economical and practical requirements are confirmed, and wide popularization is easy;in the case of a reset device, the price of the belleville spring is low, restoring force can be stably provided, and the influence on the temperature, humidity and other external factors is smaller;and no damage and low damage during the earthquake and self-resetting after the earthquake of the supporting device are realized, the structural construction is simple and clear, and the manufacturingand mounting process is simple and convenient.

The invention provides a shift register unit, a driving method of the shift register unit, a grid driving circuit and a display device. In the shift register unit, an input module controls the potential of a first node according to an input signal, an output module controls an output signal of an output end according to the potential of the first node and a first clock signal, a pull-down control module controls the potential of a second node according to the potential of the first node and the first clock signal, and keeps the output end in a resetting state before that the input end receives a next input signal, and the resetting module enables a pull-down module to work, according to a resetting signal and the input signal, so as to reset the first node and the output end, and also resets the first node and the output end according to the resetting signal and a second clock signal. The shift register unit has an improved resetting capability, and can avoid resource waste caused by that components in the shift register unit are idle.

The invention discloses a planting cutting device, and belongs to the technical field of cutting devices. The planting cutting device comprises a fixing plate, a first baffle plate and a second baffleplate are fixedly connected to the side wall of the fixing plate respectively, the top of the fixing plate is fixedly connected with a feeding hopper, a rounding hole is formed in the feeding hopper,the rounding hole is connected with a conveying mechanism, an opening is formed in the fixing plate, a vertically arranged sliding rod is slidably connected in the opening, one end, away from the sliding rod, of a third conveying pipe is fixedly connected with a cone tip, a first spring is fixedly connected between a first pressing plate and the fixing plate, the first spring sleeves the outer wall of the sliding rod, and the fixing plate is further connected with a cutting adjustment assembly acting on a second pressing plate; the device is convenient to operate, does not require manual operation, avoids manual use of tools such as small iron sticks, small iron shovels, small spuds and the like for punching and transplanting, provides convenience for planting, reduces labor intensity, saves labor time and improves work efficiency.

The invention discloses a graphene anticorrosion painting mechanism. The graphene anticorrosion painting mechanism comprises a first transverse plate. First supports are fixedly connected to the two sides of the top of the first transverse plate respectively. According to the graphene anticorrosion painting mechanism, because the first transverse plate, the first supports, a second transverse plate, a fixed mechanism, a storage box, a stirring mechanism, a third transverse plate, a second support, a first guide pipe, a water pump, a second guide pipe, a third guide pipe, a telescopic pipe, a fourth guide pipe, a spray head, a gearbox, a first motor, a rotary plate, a first fixed column, a first driving rod, a first fixed block, a second fixed column, a second fixed block, a first sliding rod, a second driving rod, a feeding pipe, a filter screen and a third fixed block are arranged and are used in cooperation, the problem that because an existing anticorrosion painting mechanism cannotspray evenly when in use, materials are prone to sedimenting and causing jamming, and a user cannot use the anticorrosion painting mechanism conveniently is solved; and the graphene anticorrosion painting mechanism has the advantage of being convenient to use, and the practicability of the anticorrosion painting mechanism is improved.

The invention discloses a municipal greening isolation fence. The municipal greening isolation fence comprises an upper transverse handrail, a lower transverse handrail and a plurality of parallel vertical handrails positioned between the upper transverse handrail and the lower transverse rail, wherein two opposite sides of the vertical handrails are connected with isolation plates of which the upper and lower ends are closely connected to the upper transverse handrail and the lower transverse handrail respectively; one side of two isolation plates is provided with a positioning plate, and the other side is provided with an elastic plate; the upper and lower ends of the positioning plates are closely connected to the upper transverse handrail and the lower transverse handrail respectively; the upper and lower ends of the elastic plates are closely connected to the upper transverse handrail and the lower transverse handrail respectively; gaps between the elastic plates and the isolation plates are filled with water; gaps between the positioning plates and the isolation plates are filled with gas; a through hole communicating both sides of the isolation plates is formed between the isolation plates. The municipal greening isolation fence has the beneficial effect that the buffering ability of the isolation fence can be enhanced, thereby reducing damage to the isolation fence and wear of the vehicle surface.

The invention discloses a friction pendulum connected fabricated steel structure system and a design method thereof. The friction pendulum connected fabricated steel structure system comprises at least two layers of steel frame structures and a group of friction pendulum shock isolation devices; steel columns of each layer of steel frame structure are disconnected at the joint with the lower floor; the friction pendulum shock isolation devices are correspondingly arranged between the steel columns of every two layers of steel frame structures; each friction pendulum shock isolation device comprises an upper connection plate and a lower connection plate; the middles of the bottom surfaces of the upper connection plates are connected with plugging blocks; the bottom surfaces of the pluggingblocks are convex curved surfaces which are convex downwards; lugs are arranged on the top surfaces of the lower connection plates; plugging slots are formed in the tops of the lugs; the bottom surfaces of the plugging slots are concave curved surfaces which are concave downwards; the plugging blocks are correspondingly plugged in the plugging slots; the tops of the plugging blocks are higher thanthe tops of the plugging slots; and distances are reserved between the side walls of the plugging blocks and the side walls of the plugging slots. The friction pendulum connected fabricated steel structure system is capable of solving the technical problems that the existing fabricated steel structure buildings are complicated in connection joints, large in field workload and low in constructionefficiency, the joints of the frame structures are rigidly connected and the seismic resistance of the frames is relatively bad are solved.

The invention provides a lead shear damper comprising an upper cover plate (2) and a lower cover plate (3). One end of the upper cover plate (2) is provided with a fixed end plate (9), and the other end of the upper cover plate (2) is provided with an upper return spring (5) fixed on a sliding end plate (7). One end of the lower cover plate (3) is connected to the sliding end plate (7), and the other end of the lower cover plate (3) is connected to a return spring (6) fixed on the fixed end plate (9). The upper cover plate (2) overlaps with the lower cover plate (3). A shear lead block (1) is arranged at the connection of the upper cover plate (2) and the lower cover plate (3). Under rare earthquake action, the return springs can be compressed or elongated to realize shearing deformation of the shear lead block and energy consuming effect of friction of the upper cover plate and the lower cover plate, and return can be realized through initial pre-compression or pretension force of the return springs during and after the earthquake.

The invention relates to the technology of inner hole detection, in particular to an inner hole detection head. The inner hole detection head is provided with a cylindrical shell. An ejector rod is installed in the lower end portion of the shell through a support. A detection jaw is arranged at the lower end of the ejector rod. The upper end portion of the ejector rod is sleeved with a balance spring. The upper end of the ejector rod is connected with a telescopic arm of an ejection air cylinder. The lower end portion of the ejector rod is provided with a detection cross rod. A detection rod is arranged in the side, provided with the ejector rod, of the shell. The lower end of the detection rod is provided with a contact type digital displacement sensor. The contact type digital displacement sensor abuts against the detection rod. According to the inner hole detection head, based on whether the difference obtained through comparison between data which are actually detected and benchmark data exists in a tolerant difference range or not, a good product and a defective product can be distinguished. In the whole detection process, a precise pressure regulating valve controls the detection pressure. Considering that it is possible that a self-locking phenomenon happens to a two-degree taper angle, the balance spring 7 has the function of detection pressure balancing and the function of the improvement of the air cylinder resetting ability.

The invention belongs to the technical field of building structures, and relates to a self-resetting concrete shear wall with built-in shape memory alloys. The self-resetting concrete shear wall comprises a reinforced concrete shear wall panel 1 and shape memory alloy (SMA) devices 2. The SMA devices comprise SMA rods and viscoelastic energy dissipation devices. The elastic restoring force generated by the SMA rods drives the wall to return to an initial position when the horizontal load is reduced, and the problem that the wall resetting ability is decreased caused by the loss of prestress during long-term use does not exist. When the wall is laterally deformed, significant restoring force can be produced to drive the wall to reset without the need of excessive deformation, the reset of the wall is realized, the viscoelastic energy dissipation devices convenient to replace can be designed into viscoelastic energy dissipation devices with different damping characteristics according toengineering requirements, wall dynamic characteristics are improved, and the structural performance is optimized.

A bidirectional clutch comprises a clutch body, a first clutch pin and a second clutch pin. The first clutch pin and the second clutch pin are arranged at two corresponding ends of the clutch body. An electronic lock comprises a shaft sleeve, a clamping sleeve and the bidirectional clutch. As the clutch body moves between the shaft sleeve and the clamping sleeve, the first clutch pin and the shaft sleeve are clamped with each other or separated from each other, and at the same time the second clutch pin and the shaft sleeve are separated from each other or clamped with each other. The electronic lock and the bidirectional clutch of the electronic lock are stable in function, high in safety and strong in resetting performance.

The invention provides a shift register unit and a scanning circuit, which is used for solving a technical problem of poor reset ability of the shift register unit in the prior art. The shift registerunit comprises a node control circuit, a scanning control circuit, a single-stage reset circuit, a discharge control circuit, a signal output circuit and a global reset circuit, wherein the node control circuit is mutually electrically connected with the scanning control circuit through a node N2a, the node control circuit is mutually electrically connected with the single-stage reset circuit, the discharge control circuit and the signal output circuit through a node N1, and the node control circuit is mutually electrically connected with the signal output circuit through a node N2b.