79results about How to "Reduce shock damage" patented technology

The invention discloses an energy-dissipation and shock-absorption tie beam for a double-limb pier and relates to the technical field of bridge building. The tie beam comprises four sleeves fixed in the same vertical plane in an X-type crossed manner, wherein the two longitudinally adjacent sleeves form an included angle alpha; a sliding telescopic rod is arranged in each sleeve, a spring is arranged between each sliding telescopic rod and the bottom of the corresponding sleeve, and the outer end of each sliding telescopic rod is fixed on the double-limb pier; a sliding friction surface is arranged between each sliding telescopic rod and the corresponding sleeve, and energy dissipation and shock absorption are realized through heat generation during sliding friction of the sliding friction surfaces. The sliding telescopic rods are connected with the double-limb pier, a pier body is horizontally and laterally restrained by means of the X-type crossed sleeves, and the static-dynamic stability of the pier is improved; by means of friction between each sliding telescopic rod and the corresponding sleeve, seismic energy borne by the pier can be converted into heat energy to be dissipated through heat generation during friction, seismic dynamic response of the pier, the plastic hinge development degree and the like can be reduced, and the situations that main structures such as the pier, a girder and the like are damaged in earthquakes can be effectively avoided or reduced.

The invention discloses an intelligent floor sweeping robot. The intelligent floor sweeping robot comprises a machine body, an anti-collision beam and sponge erasers, wherein the anti-collision beam is an arc beam, and the front end of the machine body is wrapped with the anti-collision beam; an intelligent washing device is arranged on the anti-collision beam, and shaking damage suffering when the floor sweeping robot is collided is reduced through the anti-collision beam and a spring column; the bottoms of the wall and furniture can be effectively cleaned through the intelligent washing device on the anti-collision beam, the working range of the floor sweeping robot is widened, and the functionality of the intelligent floor sweeping robot is effectively reinforced; multiple sponge eraserare arranged at the other end, connected with the spring column, of the machine body, and are driven by a rotating device to rotate for effectively and rotationally wiping the floor passing through the intelligent floor sweeping robot, strains, ink marks and the like on floors and tiles are efficiently removed, the floor cleaning efficiency of the intelligent floor sweeping robot is improved, anddifferent cleaning requirements of multiple floors are met. The intelligent floor sweeping robot is simple in structure, high in practicability and easy to apply and popularize.

The invention relates to a method for quickly and accurately positioning a die in injection molding process. In the invention, based on closed-loop control, the iterative learning control (ILC) over speed is adopted on an inner layer and iterative learning estimator is used to estimate offset on the outer layer, so as to ensure a smooth die opening process and realize the quick and accurate positioning of the die; therefore, the production period is shortened and mechanical vibration damage is reduced.

The invention discloses a shock absorption foundation structure of a device and a construction method of the shock absorption foundation structure. By means of the shock absorption foundation structure, the shock absorption effect can be improved, and maintenance expenses can be reduced. The shock absorption foundation structure comprises a foundation layer, a filling layer, shock absorbers and a secondary foundation. Shock absorption grooves are formed in the foundation layer. The installation faces of the shock absorbers are arranged on foundation bottom plates of the shock absorption grooves. The filling layer is arranged on the inner walls and the foundation bottom plates of the shock absorption grooves. Shock absorption faces lower than the shock absorbers are filled with the portions, above the foundation bottom plates, of the filling layer. An installation groove is formed by the filling layer. The secondary foundation is arranged in the installation groove and located on the shock absorption faces of the shock absorbers. It is ensured that the construction method includes the following steps that firstly, the foundation layer is poured, and the shock absorbers are arranged on the foundation layer; then, a waterproof layer and the filling layer are sequentially constructed, and a reinforcing steel bar framework can be installed on the filling layer; and then, the secondary foundation is formed through pouring. By means of the shock absorption foundation structure and the construction method of the shock absorption foundation structure, the shock absorption effect of a shock absorption foundation can be improved, and the maintenance cost and the construction cost can be reduced.

The invention relates to the technical field of new energy automobile battery protection, in particular to a new energy automobile battery protection cover. The new energy automobile battery protection cover comprises a battery box and a protection box fixedly connected with an automobile chassis; the protection box comprises a side plate and a bottom plate; sliding columns are arranged on the bottom plate; a buffer plate is arranged above the bottom plate; first springs are vertically arranged between the buffer plate and the bottom plate; a bearing plate is horizontally arranged above the buffer plate; a plurality of connecting columns are vertically arranged between the bearing plate and the buffer plate; a cavity is formed in the side plate; non-Newtonian fluid is contained in the cavity; a second through hole and a damping cylinder are arranged on the end face of the side plate; a push rod is arranged on the damping cylinder; the outer end of the push rod is fixedly connected with a push plate; and the push plate makes contact with the outer surface of the side wall of the battery box. The new energy automobile battery protection cover has multiple buffering and damping effects on a battery and effectively protects a power battery of a new energy automobile in an automobile collision accident.

The invention discloses a telescopic vehicle blocking rod device based on security technology and protection engineering, relating to the technical field of security technology and protection engineering. The telescopic vehicle blocking rod device comprises two vehicle blocking rod assemblies which are symmetrically distributed, wherein the vehicle blocking rod assemblies comprise first-stage hollow rods, second-stage hollow rods and third-stage hollow rods, the second-stage hollow rods are movably clamped into the first-stage hollow rods, the third-stage hollow rods are movably clamped into second-stage hollow rods, and the insides of the first-stage hollow rods, the second-stage hollow rods and the third-stage hollow rod are communicated to form a closed cavity; oil holes communicated with the cavity are formed in the side ends, far from the second-stage hollow rods, of the first-stage hollow rods, and oil pipes are connected to the oil holes; hydraulic stations are connected to theother ends of the oil pipes, seat bodies are connected to the side ends of the first-stage hollow rods, and the other side ends of the seat bodies are hinged to the side ends of the hydraulic stations; and the hydraulic cylinders are hinged to the bottoms of the seat bodies, and the other ends of the hydraulic cylinders are hinged of the side ends of the hydraulic stations. The telescopic vehicleblocking rod device has the advantages of simple structure, low energy consumption, smoothness in operation and long service life.

The invention discloses a fireman uniform capable of making a fireman safely descend and relates to the field of firefighting. The fireman uniform capable of making the fireman safely descend comprises a coat and trousers. Braces fixed to the front side and the back side of the coat are arranged on the coat. The back side of the coat is provided with a rope bag connected with the braces. The front side of the coat is provided with an emission gun connected with the braces. A three-jaw hook is arranged in the emission gun. One side of the rope bag is provided with an opening for a rope to slide out. Two sleeves of the coat are each provided with a pulley. The rope penetrates the pulleys and is connected with the three-jaw hook.

The invention provides a self-resetting frame-shear wall structure for reinforcing an earthquake-damaged frame and a construction method and relates to a self-resetting frame-shear wall structure anda construction method. According to the self-resetting frame-shear wall structure for reinforcing the earthquake-damaged frame and the construction method, the problem that at current, after a shear wall is additionally arranged to reinforce an earthquake-damaged concrete frame, large interlayer lateral migration, permanent residual deformation caused by an earthquake and structure damage caused by the earthquake still possibly occur is solved. The self-resetting frame-shear wall structure comprises the earthquake-damaged frame, a column side rear-arranged shear wall or an inter-column rear-arranged shear wall and a fiber cement paste layer, an earthquake-damaged area of the earthquake-damaged concrete frame is restored, then a certain height is reserved for the fiber cement paste layer firstly when the rear-arranged shear wall is constructed, and then arrangement of wall body interior high-strength prestress bars and steel bars and pouring of wall body concrete are conducted. After the grade of the wall body concrete reaches the designed strength grade, tensioning and anchoring are conducted, and fiber cement paste is poured into the reserved height range of the wall bottom in a pressed mode. The self-resetting frame-shear wall structure and the construction method are used for reinforcing the earthquake-damaged frame.

The invention discloses a controller fixing frame of electric power and reactive power compensation system which is convenient to disassemble and install, include a mounting plate, A frame body and asupport box body, A support box is arranged at that center position of the top of the mounting plate, and a support plate is fixedly supported on the top of the support box through the second shock absorbing assembly, the top of the support plate is provided with a frame body through bolts, heat absorbing fins are arranged at the middle positions of the four outer side walls of the rack body, andthe back surface of the heat absorbing fin is provided with a heat dissipating fin fixed thereon, One end of the heat dissipation fin far away from the heat dissipation fin extends to the inside of the frame body, and the four inner side walls of the frame body outside the heat dissipation fin are uniformly installed with a first coil tube, a second coil tube, a third coil tube and a fourth coil tube, respectively, and a heat dissipation fan is installed at the central position of the bottom end of the frame body through bolts. The invention realizes the heat dissipation mode of the double combination of the air cooling and the water cooling, greatly improves the heat dissipation effect of the controller and prolongs the service life of the radiator.

The invention discloses an advertisement screen. The advertisement screen comprises an outer framework, a base, an advertisement screen component and a mailbox component. The outer framework includes a framework body and several buffer pieces, and the framework body is provided with an installing frame and an installing space. The base comprises a seat and an anti-slide block. The advertisement screen component includes a display screen body and a power line. The mailbox component includes a box body and a hanging hook which are connected to each other, wherein the hanging hook is connected with the outer framework, and the box body has a hollow cavity, and is provided with a feeding opening interconnected with the hollow cavity. Through arranging several buffer positions on the installing frame of the framework body, the buffer piece absorbs the potential energy and kinetic energy generated when the outer framework is poured down; when the potential energy and kinetic energy are big, the installing frame is separated from the seat body, thereby greatly lightening the shock damage to the display screen body after the outer framework is poured down, and improving the service life of the display screen body; meanwhile, the mailbox component can recycle the evaluation questionnaire of users, so that the investment effect of the advertisement screen can be learned.

The invention discloses a robot chassis device capable of multi-stage lifting. The device includes a robot body, a chassis cabinet, a first-stage lifting device, a second-stage lifting device and a third-stage lifting device; the first-stage lifting device, the second-stage lifting device and the third-stage lifting device are arranged inside the chassis cabinet from bottom to top, and the robot body is arranged at the top of the third-stage lifting device. The first-stage lifting device includes a first-stage base, a first-stage hydraulic cylinder, a first-stage hydraulic rod, a damper spring, a first-stage connecting rod and a first-stage lifting platform, the second-stage lifting device includes a second-stage hydraulic cylinder, a second-stage hydraulic rod, a second-stage connecting rod and a second-stage lifting platform, and the third-stage lifting device includes a driving motor, a turning wheel, a rack frame and a lifting chassis. According to the robot chassis device capableof multi-stage lifting, the different heights of the chassis can be flexibly adjusted based on the height demands of robot operation, therefore the height of the robot is adjusted, the lifting strokeis large, the structure is simple, use is flexible and convenient, and the cost is low.

The invention provides a beam bottom formwork detaching mechanism and a beam bottom formwork detaching method, and belongs to the field of building construction. The beam bottom formwork detaching mechanism comprises an under-beam steel formwork, a plurality of vibration steel sleeves and a plurality of vibration assemblies, wherein the under-beam steel formwork is arranged on a concrete base layer, the vibration steel sleeves are arranged on the two opposite lateral sides of the under-beam steel formwork at intervals, standing spaces are formed between every two adjacent vibration steel sleeves, and the vibration assemblies are connected with the vibration steel sleeves in a vibration mode so that the concrete base layer close to the under-beam steel formwork can fall off to be removed. The beam bottom formwork detaching mechanism is reasonable in structure, convenient to use, convenient to detach and high in safety performance and saves manpower and materials.

The invention belongs to the technical field of automobile batteries. The invention discloses an electric automobile battery pack with good heat dissipation performance. The battery pack comprises anouter box, a box cover, a heat dissipation inner box and a battery pack, a hinge shaft is mounted at one end of the outer box; the box cover is hinged with the outer box through the hinge shaft; the other end of the box cover is clamped with the outer box; a heat dissipation inner box is mounted in the outer box, a plurality of buffer spring columns are mounted at the bottom in the heat dissipation inner box, a mounting base is fixedly connected to the tops of the buffer spring columns, a battery pack is mounted on the mounting base, and a refrigeration water cavity, a first circulating pump and a second circulating pump are mounted in a bottom plate of the outer box. According to the invention, the outer box and the box cover are clamped and connected in a running fit manner; the mountingbase and the buffer spring columns are arranged at the inner bottom of the heat dissipation inner box, damage caused by shaking is avoided, a refrigeration piece in an inner cavity of a refrigerationwater cavity cools circulating water, the circulating water is conveyed to the inner cavity of the heat dissipation water cavity through a first circulating pump and a second circulating pump, and the heat dissipation effect is better.

The invention discloses a computer information security control device and method, the device comprises a computer main body, the computer main body is provided with a USB interface and an empty slot,and the bottom of the computer main body is provided with a buffer device; a safety block is arranged on the computer main body below the USB interface; a movable cavity is formed in the right side of the safety block; a connecting rod is arranged on the right side face of the safety block, a connecting plate is arranged at the right end of the connecting rod, a lead screw is transversely arranged in the connecting plate in a penetrating mode, one end of the lead screw is connected with a rotating shaft of a motor, the other end of the lead screw is arranged on the computer body located belowthe safety block, and the fixed part of the motor is fixedly connected with the inner wall of the movable cavity; a fingerprint identifier is arranged in the empty groove, a protective plate is arranged at an opening of the empty groove, and the protective plate is movably connected with the empty groove through a connecting shaft. The USB interface is good in safety effect, vibration can be effectively reduced in the carrying process, dust is not prone to being accumulated on the surface of the fingerprint identifier, and the safety effect on computer information is good.

The invention discloses an efficient protective LED lamp assembly. The lamp assembly comprises an outer protective guard, a protective shell, a supporting frame and a lamp holder, wherein the supporting frame comprises a base and a mounting disc; the mounting disc is arranged at the upper end of the base; a supporting plate is arranged at the upper end of the mounting disc; the protective shell isrotatably connected with the supporting plate; the lamp holder is mounted in the middle of the protective shell; and the outer protective guard is arranged outside the protective shell and connectedwith the mounting disc. The protective shell is arranged outside the lamp holder, the outer protective guard is arranged outside the protective shell, and dual protection is adopted, so that the protective grade is improved, destructive force can be prevented from making direct contact with the lamp holder when a lamp is impacted by external force, the use safety is improved, and the service lifeis prolonged; and through the arrangement of the outer protective guard and the protective shell, the attractiveness of the lamp can be improved, the application environment range is expanded, and theapplication field of the lamp is expanded.

The invention discloses a horizontal damping device for a plane landing gear, in particular for a support-post landing gear system. A top plate with a raceway, a rolling shaft and a support frame on which the rolling shaft can be arranged and kept constitute a linear moving bearing which can bear the weight of a plane and can move in the horizontal direction; a horizontally-arranged damper is used for buffering and damping a moving component of the linear moving bearing; and the movable bottom of the entire set of horizontal damping device is connected with support posts of the landing gear, so that horizontal buffering and damping effects are performed on the landing gear and bending moment on the support posts is reduced.

The invention discloses a cutting board which comprises a cutting board body. A lifting ring for hanging the cutting board body is arranged on the cutting board body, damping bases are arranged at the four corners of the bottom face of the cutting board body respectively, the heights of the damping bases range from 3 cm to 5 cm, a knife pouch for containing a kitchen knife is arranged on the bottom face of the cutting board body, and a locking piece used for clamping the kitchen knife is arranged at the portion of an opening of the knife pouch. Compared with the prior art, the cutting board has the advantages that the damping bases on the bottom face of the cutting board body enable the cutting board not to be attached to the table face or a wall face, ventilation is kept, germ or mould breeding is prevented, vibration damage of the cutting board to the table face can be further reduced while chopping is carried out, the knife pouch is used for containing the kitchen knife, and a child cannot take the kitchen knife.

The invention relates to the technical field of unmanned aerial vehicles, and discloses a protection device for an aerial photography unmanned aerial vehicle, which comprises an unmanned aerial vehicle body, a camera is fixedly installed at the bottom of the unmanned aerial vehicle body, and two supporting legs are fixedly installed on each of the left side and the right side of the bottom of theunmanned aerial vehicle body. Groove bases are fixedly connected to the sides, deviating from each other, of the supporting legs on the left side and the right side, extrusion springs are fixedly connected into the groove bases, fixing blocks are fixedly connected to the sides, away from the groove bases, of the extrusion springs, and guide columns are fixedly connected to the sides, close to theextrusion springs, of the fixing blocks. According to the protection device for the aerial photography unmanned aerial vehicle, the influence of transverse and longitudinal impact vibration on the unmanned aerial vehicle body can be effectively reduced, meanwhile, the situation of sudden rainy days can be avoided through the protection cover, the protection effect of the aerial photography unmanned aerial vehicle is greatly improved, the situation that the aerial photography unmanned aerial vehicle is damaged or damaged is avoided, and therefore shooting of the unmanned aerial vehicle is prevented from being affected.

Provided is an anti-retrograding speed bump. A left speed bump unit comprises a top plate and a bottom plate, wherein that top plate is semi-arc shaped, the left end of the top plate is fixedly connected with the left end of the bottom plate, and a support block inclined from the upper left to the lower right is arranged between the top plate and the bottom plate. A right speed bump unit comprisesan anti-retrograde steel sheet, a lower end of the anti-retrograde steel sheet is connected with a rotating bracket, a left end of the rotating bracket is connected with a tension spring, the other end of the tension spring is fixed on the bottom plate inside the left speed bump unit, and the right end of the rotating bracket is fixedly connected with a rotating shaft arranged along the length direction of the speed bump body. The anti-retrograde steel sheet is semi-arc shaped, and its left end extends into the top plate of the left speed bump unit. The right end of the anti-retrograde steelsheet is higher than the height of the right end of the top plate in the left speed bump unit. The stretching stroke of the tension spring shall not be less than the movement stroke of the right-handspeed bump unit bottom plate of the anti-retrograde steel sheet, which prevents retrograde traffic on a one-way lane and reduces traffic congestion.