9results about How to "Effective security protection" patented technology

The utility model relates to a hydraulic oil cylinder with external protection structure belongs to hydraulic oil cylinder technical field, including hydraulic oil cylinder main part, spiral reinforced telescopic cover, honeycomb guard, hydraulic oil cylinder main part is provided with piston rod, hydraulic oil cylinder main part and piston rod all are installed with trunnion, the both ends of spiral reinforced telescopic cover are connected through screw with hydraulic oil cylinder main part and piston rod respectively, hydraulic oil cylinder main part evenly fixedly installed has dovetail groove, honeycomb guard is inserted in dovetail groove, and the limiting bottom plug is inserted in dovetail groove and is positioned through screw. The utility model, set up honeycomb guard compared with traditional solid steel plate or plastic guard can have better impact resistance, and the weight is lighter, adopts split type design to facilitate the damaged piece to disassemble and replace, honeycomb structure attenuates vibration energy, improves the anti -vibration performance, and the honeycomb guard shell can effectively resist the rigid impact to the oil cylinder, especially suitable for mine, metallurgy, engineering machinery and other severe environment.

This utility model relates to the field of safety protection technology for loading foam glass, and discloses a safety protection device for loading foam glass, including two No. 1 wheel frames; the No. 1 wheel frame, No. 2 wheel frame, and No. 3 wheel frame are connected by a single slider and a double slider, and a first winch and a second winch, so that the device can be flexibly deployed on a flatbed truck. In use, it is connected to the safety rope on the employee through the hanging wheel, and the No. 3 wheel frame can be moved according to the loading and unloading needs to provide effective safety protection for the employee and prevent the employee from falling from a height. By applying external force to pull the positioning pin, it is disengaged from the positioning groove, which releases the positioning pin from the brake rod. At this time, the positioning pad is pressed against the ground by pressing the brake rod. At this time, the positioning pin is embedded into the positioning groove under the action of the positioning spring, which can fix the brake rod. Under the action of the friction between the positioning pad and the ground, the device will not be able to move, ensuring the braking effect of the device.

The utility model discloses a civil air defense engineering concrete strength rapid measuring device which comprises a supporting table and a hydraulic cylinder, a pressure sensor is fixedly installed at the output end of the hydraulic cylinder, a detection pressing block is fixedly installed at the bottom of the pressure sensor, and a PLC is fixedly installed at the right end of the front surface of the supporting table. A stepping motor is fixedly installed at the upper end of the left side of the outer surface of the supporting table. Through the arrangement of the supporting table, a concrete sample for strength detection required by civil air defense engineering can be supported, and through the arrangement of the hydraulic cylinder, the pressure sensor and the detection pressing block, personnel can conveniently and rapidly measure the compressive strength of civil air defense engineering concrete; meanwhile, through the arrangement of a stepping motor, a two-way screw rod, a moving plate and a protective cover, the periphery of the concrete sample can be effectively and safely protected in the measuring operation process, and concrete chippings are prevented from splashing to the periphery and hurting personnel.

The utility model belongs to the technical field of road construction, and discloses a road construction foundation pit safety protection device which comprises two stand columns, the two stand columns are horizontally distributed in a spaced mode, the middles of the opposite end faces of the two stand columns make contact with connecting plates, and an adjusting assembly is arranged between the middles of the two connecting plates. Limiting assemblies are arranged between the two sides of the two connecting plates. Through the stand columns on the two sides and the connecting plate, a threaded cylinder, an adjusting screw rod, a rotating shaft, a compensation rod, a T-shaped groove, a T-shaped shaft, a limiting cylinder and a sliding rod which are arranged in cooperation with the positions between the stand columns on the two sides and the connecting plate, assembly can be conducted on the road construction foundation pit site, and effective safety protection is conducted on the foundation pit; and the protection action length on the foundation pit can be adjusted according to specific requirements on the site, so that the practical effect of the whole safety protective fence is effectively improved.

This utility model discloses a seat and a vehicle. The seat includes: a seat body, comprising a seat cushion, a backrest, and a leg rest, with the backrest connected to the rear end of the seat cushion and the leg rest connected to the front end of the seat cushion; an airbag module disposed on the leg rest, the airbag module being used to restrict the lower limb movement of the occupant on the seat body after deployment; and an airbag controller electrically connected to the airbag module, the airbag controller controlling the state of the airbag module based on received vehicle status signals. This utility model not only effectively reduces the displacement of the occupant in a collision, but also reduces the impact injury caused by inertia by slowing down the forward or lateral movement speed of the occupant's body, thereby significantly improving the protective effect of the entire occupant restraint system and providing more comprehensive and effective safety protection for the occupant.

The utility model discloses a nickel-metal hydride battery quality detection device, which belongs to the technical field of battery quality detection, and aims to solve the problems of insufficient protection, inconvenience in clamping and the like of the existing device. The nickel-metal hydride battery quality detection device comprises a door-shaped test frame, a test bin, a lifting seat, two groups of symmetrical clamping arms, a pressing frame, a positioning rod and the like, the top of the test bin is provided with a hole for a battery to fall off and a safety tube, the bin door is connected with the test bin through a lock catch, the lifting seat is connected with the telescopic cylinder and slides along the test frame, the clamping arm automatically clamps the battery through a torsional spring, the pressing frame presses downwards to control the clamping arm to be opened and closed, and the positioning rod can adjust the height to enable the battery to fall off at a preset height. Detection safety is guaranteed through the safety tube and the closed test bin, convenient operation is achieved through the mechanical structure, the clamping blocks are specially designed to adapt to various batteries, the positioning rods are adjustable, various detection requirements are met, and detection safety and efficiency are improved.

This invention discloses a secure computation method, apparatus, and chip for information. The method includes: during secure computation, obtaining the dividend and modulus of a modulo operation; determining a transformation constant for converting the dividend to the Montgomery domain based on the modulus, and secretly calculating a Montgomery modular multiplication factor based on the transformation constant and the modulus; dividing the dividend into multiple local dividends based on the transformation constant, and performing a matching Montgomery modular multiplication on each local dividend according to its position within the dividend and the Montgomery modular multiplication factor, obtaining multiple local modulo results; and calculating the modulo operation result between the dividend and the modulus based on the multiple local modulo results. The technical solution of this embodiment is based on an improved Montgomery modular multiplication algorithm, achieving fast and secure modulo computation during secure computation of information, improving the speed of modulo computation while resisting side-channel attacks.

The application relates to the technical field of building construction safety protection, and discloses a center column installation turnover cantilever protection device, which comprises steel belts, angle steels, square steel pipes, bolts, round steel pipes and steel sheet nets, wherein the steel belts are arranged in a plurality of strips, are fixed in a hoop around the outer wall of the center column, and are connected into a hoop clamp through the bolts at the two ends; the angle steels serve as main cantilever beams, the vertical limbs of the angle steels are connected with the steel belts through the bolts, and the horizontal limbs of the angle steels are extended to form a cantilever platform; the square steel pipes are connected at the end portions of the horizontal limbs of the angle steels and form an annular outer frame with the adjacent angle steels; the round steel pipes are arranged in a hoop to form a horizontal support system; and the steel sheet nets are laid on the platform surface as a bottom plate for the walking and material placing of workers. The application can provide a working platform and falling protection device which are directly fixed on the installed center column segment, and solve the problems of high cost, slow erection, high risk in the air and poor turnover in the prior art.

The utility model provides tungsten wire diamond wire bus strength detection equipment, which relates to the technical field of metal material detection, and comprises a base, the top of the base is fixedly connected with a protection box, the inner surface wall of the protection box is fixedly connected with two first guide rods, and a first moving plate is movably sleeved between the outer surface walls of the two first guide rods; the bottom of the inner wall of the protection box and the bottom of the first moving plate are fixedly connected with mounting frames, and the inner surface walls of the two mounting frames are fixedly connected with first clamping blocks. According to the clamping device, secondary clamping of the tungsten wire diamond wire bus is achieved under the interaction of all the components of the clamping device, and the double clamping structure prevents the bus and the clamping components from slipping or falling off by increasing the clamping force and the friction coefficient of the contact surface; it is ensured that the actual fracture load of the material is achieved in the limit load test of the tungsten filament with the limit high rigidity, and the detection precision is guaranteed.