38results about How to "Avoid elastic failure" patented technology

The invention discloses a slope reinforcement improvement device for building municipal engineering. The slope reinforcement improvement device comprises a long straight hollow cylinder body. An external thread is arranged on the outer wall of the cylinder body, a bearing is fixed to the upper position on the inner wall of the cylinder body, a guide rod is installed on an inner ring of the bearing in an interference manner, and the guide rod and the cylinder body are located on the same axis. A spiral part and a threaded part are sequentially arranged on the lower portion of the guide rod from top to bottom. Gear inserted rods are installed on the two sides of the cylinder body. Each gear inserted rod comprises a gear end and an inserted rod end which are connected, wherein the gear end is rotationally installed on the cylinder body through a rotating shaft, a part of the gear end is located in the cylinder body and engaged with the spiral part of the guide rod. The slope reinforcement improvement device is reasonable in structure design, and stability is improved by combining the unfoldable gear inserted rods and concrete mortar in a drill hole.

The invention discloses a method and a system for evaluating structural performance of a high-temperature valve based on a valve simulation model. The method comprises the following steps of establishing a three-dimensional geometrical model of the valve with the center of a runner of a valve body as an origin; applying finite element analysis software to carry out grid processing on the three-dimensional geometrical model of the valve; carrying out analog computation on a temperature field of the valve, which changes with the temperature, and a hot stress field which bears temperature load based on the three-dimensional geometrical model of the valve; and computing total hot stress and local heat stress when a valve bearing component bears a combined action of the temperature load and the mechanical load, and evaluating the structural performance condition of the valve according to a hot stress computation result and reference to the specified strength design standard of the high-temperature valve structure. According to the method and the system, valve design parameters needed by the high-quality valve with reasonable structural design and reliable structural strength is obtained through modeling calculation, so that the safety for running of a nuclear power plant is improved, the experimental manufacturing cost of a model machine is reduced, and the valve product development cycle is shortened.

The invention provides a locking mechanism, a case and network equipment, and relates to the technical field of communication equipment. The locking mechanism comprises a bottom shell, a connecting piece, an operating piece and a sliding sheet, wherein the side wall of the bottom shell is provided with a sliding groove; the connecting piece is rotationally connected to the first end of the bottomshell; the middle of the operating piece is rotationally connected to the connecting part; a sliding part, close to the first end of the bottom shell, of the operating piece is arranged in the slidinggroove; an operating part is arranged on one side, close to the second end of the bottom shell, of the operating piece; the sliding sheet is connected with the sliding part; when the operating part rotates to a first position far away from the bottom shell, the locking mechanism is in an unlocked state; and when the operating part rotates to a second position in the bottom shell, the locking mechanism is in a locked state.

The invention relates to a wear-resisting small eccentric V-ball regulating valve special for salt chemical engineering. The wear-resisting small eccentric V-ball regulating valve comprises a valve body, a packing box is machined on the valve body, a packing seal assembly, a packing gland and a packing pressing plate are sequentially arranged in the packing box and connected with the valve body in a fastening mode; a small eccentric valve ball is concentric with a transmission shaft and a driven shaft, the small eccentric valve ball is connected with the transmission shaft and the driven shaft and arranged in the valve body, an upper bush and the transmission shaft are arranged in the valve body from the top, a lower bush and the driven shaft are arranged in the valve body from the bottom, and a valve seat and a pressing ring are arranged in the valve body from the side face; a first distance adjustment pad and a second distance adjustment pad are arranged on the upper end face and the lower end face of the small eccentric valve ball; a first C-shaped seal ring is arranged in a clamping groove between the valve body and the first distance adjustment pad; a first supporting ring is arranged between the upper bush and the lower bush, and a second supporting ring is arranged between the first C-shaped seal ring and a second C-shaped seal ring. According to the wear-resisting small eccentric V-ball regulating valve, blocking of a flow channel of the valve body can be effectively prevented, corrosion of a cavity by crystals can be effectively prevented; the adjustment accuracy of the valve can be improved; scouring and corrosion of media on the valve body and components in the valve can be reduced; particle media can be prevented from entering valve shaft gaps, the adjustment accuracy of the valve can be greatly improved, and the service life of the valve can be greatly prolonged.

The invention relates to an unlocking energy storage spring triggering device for oil-gas well perforation initiation. The unlocking energy storage spring triggering device for oil-gas well perforation initiation is used for triggering an initiator in an initiation device used for triggering oil-gas well perforation, and solves the problems that a spring arranged in the existing triggering device is pre-compressed in the device for a long time, so that the elasticity of the spring fails; and after the potential energy is converted into kinetic energy, the initial energy is reduced, so that the initiator cannot be triggered. Meanwhile, the device is unlocked when the force exerting on the triggering device is greater than the pre-pressure of the spring; the initiation device can be reliably triggered; the problem that the initiation pressure cannot be preset for the initiation device for an oil-gas well is solved; the one-step well-entering perforation success ratio is improved; the construction cost is reduced; and the use is more reliable and safer.

The invention discloses a cylinder brainpan for common gas engine, comprising inner cover of cylinder brainpan, outer cover of cylinder brainpan, cover of breathing chip and breathing chip. Breathing cavity is formed between inside wall of inner cover and outside wall of outer cover, in which cover of breathing chip and breathing chip are set. Said breathing chip is spring steel chip. Breathing chip is pasted to the outside wall of inner cover so as to cover breathing port. The cover of breathing chip is set on the breathing chip and is fixed on the inner cover of cylinder brain span with the breathing chip. One end of the cover of breathing chip is upswept so as to form limiting angle where breathing chip swings at the angle range and the other end have an end face guiding exhaust pipe. Because breathing chip is spring steel chip and is fixed with inner cover, solving the problem of bonding and lagging of breathing chip in basic, avoiding often open and often close phenomenon entirely are realized. Stable working of the breathing chip ensures air flow smooth and achieves balancing the air press in crankcase efficiently.

The invention discloses a fully-automatic die-cutting machine gripper and belongs to the technical field of printing and packaging equipment. The fully-automatic die-cutting machine gripper comprises a set of gripper units. Each gripper unit is provided with a cylinder, a fixed gripper piece, a movable gripper piece and a connecting rod, wherein the fixed gripper piece is installed on a gripper bar of a die-cutting machine and hinged to the movable gripper piece, the movable gripper piece is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to a piston rod of the cylinder, and the cylinder is fixed to the gripper bar of the die-cutting machine and connected to a control gas circuit of the die-cutting machine in parallel. The fully-automatic die-cutting machine gripper has the advantages of being simple in structure, small in part number, higher in working reliability and longer in service life.

The invention discloses a slope reinforcing device for construction municipal civil engineering. The slope reinforcing device for construction municipal civil engineering comprises a hollow, long and straight barrel body, wherein external threads are formed in the outer wall of the barrel body, a bearing is fixed to the upper portion of the inner wall of the barrel body, a guide rod is installed on the inner ring of the bearing in an interference manner, the guide rod and the barrel body are located on the same axis, a screw portion and a thread portion are arranged on the lower portion of the guide rod from top to bottom in sequence, gear insertion rods are installed on the two sides of the barrel body, each gear insertion rod comprises a gear end and an insertion rod end which are connected, each gear end is rotationally installed on the barrel body through a rotary shaft, and part of each gear end is located inside the barrel body and is meshed with the screw portion of the guide rod. The slope reinforcing device for construction municipal civil engineering is reasonable in structural design, and because the foldable gear insertion rods are combined with the concrete mortar in drill holes, stability is improved.

The invention discloses a float tube type wave-activated generator, which comprises a sealed metal tube, as well as a rotor system, a stator system, a hanger spring and a slide rail all arranged in the sealed metal tube, wherein the stator system is arranged on an inner tube wall of the sealed metal tube; the rotor system is arranged on the slide rail positioned in a cavity formed by the stator system in an enclosing manner; the upper end of the slide rail is hung at the hanger spring arranged at the lower end of a sealing cover plate; the whole slide rail-rotor system is hung at the middle of the stator system; a slide rail balance weight arranged at the lower end of the slide rail enables the hanger spring to realize most active elasticity, and the slide rail-rotor system is enabled to reciprocate up and down in case of any slight wave fluctuation. According to the wave-activated generator disclosed by the invention, a linear electric generator, the hanger spring, the slide rail, a protection magnet and the balance weight are arranged in the sealed metal tube; through arrangement of the balance weight for a float tube, the float tube can always keep the upright state and suspends at a fluctuation layer with most active wave fluctuation; when multiple float tube type wave-activated generators are mounted in parallel, rigid supports are used for mutual supporting, so that distances between the wave-activated generators can be kept, collision can be avoided and large-scaled electricity generation can be formed.

The invention relates to a modified asphalt composition which comprises the following components in percentage by weight: 1-6% of a styrene-butadiene-styrene block copolymer, 0.1-0.4% of an ethylene-vinyl acetate copolymer, 1-3% of polystyrene, 1-2% of a melamine resin, 10-15% of a terpene resin, 1-5% of a transition metal oxide, 1-2% of calcium carbonate and the balance of matrix asphalt. According to the used addition modifier, structural chain fracture of a copolymer modifier under a rut load is avoided, and the dispersion morphology of a non-polymerized modifier in the asphalt body is promoted. The modified asphalt composition can maintain high strength and fatigue resistance while maintaining high elasticity of the asphalt.

The invention discloses an environment-friendly slope strengthening device for municipal construction, which comprises a hollow, long and straight barrel body, wherein an external thread is arranged on the outer wall of the barrel body; a bearing is fixed at the upper part of the inner wall of the barrel body; a guide rod is mounted on the inner ring of the bearing in an interference way; the guide rod and the barrel body are located on the same axis; a spiral part and a threaded part are arranged at the lower part of the guide rod from top to bottom in sequence; gear inserted rods are mounted on two sides of the barrel body; each gear inserted rod comprises a gear end and an inserted rod end, which are connected with each other; the gear ends are rotationally mounted on the barrel body through rotating shaft; and part of each gear end is located in the barrel body and engaged with the spiral part of the guide rod. The slope strengthening device is reasonable in structural design, and can improve the stability through combination of the gear inserted rods capable of being unfolded and concrete in a dilled hole.

The invention discloses an auxiliary handle used for an electric tool, and belongs to the technical field of electric tool accessories. The auxiliary handle comprises a handle grip with a cavity. The hand grip comprises an opening end communicating with the cavity. The auxiliary handle further comprises a storing device used for inserting an accessory in the handle grip from the opening end and fixing the accessory in the cavity. According to the auxiliary handle used for the electric tool, the storing device used for fixedly storing the accessory in the cavity of the hand grip is additionally arranged on the basis of an existing auxiliary handle, the auxiliary handle has a storing function while having the function of assisting in using the electric tool, users can conveniently take, store or replace the accessory in the working process, and the users do not need to frequently use or carry special tool kits which are large in weight and too large in accessory number.

The invention discloses a slope anchoring device for the building municipal engineering. The slope anchoring device comprises a hollow and long and straight barrel, the outer wall of the barrel is provided with an outer thread, a bearing is fixed to the upper portion in the barrel, a bearing inner ring is provided with a guide rod in an interference mode, the guide rod and the barrel are located on the same axis, a spiral portion is arranged below the guide rod, the two sides of the barrel are provided with gear inserting bars, each gear inserting bar comprises a gear end and an inserting bar end which are connected together, the gear ends are rotatably mounted to the barrel, part of each gear end is located in the barrel and meshed with the spiral portion of the guide rod, and the side wall below the barrel is provided with a gap portion. The slope anchoring device is reasonable in structural design, and stability is improved through combination of the foldable gear inserting bars and concrete mortar in a hole.

The invention discloses a method and a system for evaluating structural performance of a high-temperature valve based on a valve simulation model. The method comprises the following steps of establishing a three-dimensional geometrical model of the valve with the center of a runner of a valve body as an origin; applying finite element analysis software to carry out grid processing on the three-dimensional geometrical model of the valve; carrying out analog computation on a temperature field of the valve, which changes with the temperature, and a hot stress field which bears temperature load based on the three-dimensional geometrical model of the valve; and computing total hot stress and local heat stress when a valve bearing component bears a combined action of the temperature load and the mechanical load, and evaluating the structural performance condition of the valve according to a hot stress computation result and reference to the specified strength design standard of the high-temperature valve structure. According to the method and the system, valve design parameters needed by the high-quality valve with reasonable structural design and reliable structural strength is obtained through modeling calculation, so that the safety for running of a nuclear power plant is improved, the experimental manufacturing cost of a model machine is reduced, and the valve product development cycle is shortened.

The invention discloses an environment-friendly slope reinforcement device used for municipal engineering. The environment-friendly slope reinforcement device comprises a hollow long and straight barrel. An external thread is arranged on the outer wall of the barrel. A bearing is fixed to the upper position of the inner wall of the barrel. A guide rod is installed on the inner ring of the bearing in an interference manner. The guide rod and the barrel are located on the same axis. The lower position of the guide rod is sequentially provided with a spiral part and a threaded part from top to bottom. Gear insertion rods are installed on the two sides of the barrel. Each gear insertion rod comprises a gear end and an insertion rod end which are connected. The gear ends are rotationally installed on the barrel through rotating shafts. Part of the gear ends are located in the barrel and engaged with the spiral parts of the guide rods. The environment-friendly slope reinforcement device is reasonable in structural design, and stability is improved by combining the gear insertion rods capable of being unfolded and concrete mortar inside drilled holes.

The invention discloses a safety device for an integrated wire lock folding tool, which is composed of a main knife, a stop nail, a step shaft, a turntable, a spring, a first handle, a main shaft screw, a riveting screw, a main shaft, a spacer screw, a second handle and a spacer sleeve. The safety device of the integrated line lock folding knife of the present invention can not only prevent accidental unlocking during use, but also prevent the elastic failure caused by the transition of the spring lock piece locking the main knife under force and deformation; The synchronous operation of unlocking the main knife is completed, and the operation is not cumbersome due to the addition of a safety device. The invention has the advantages of simple structure, convenient operation, stable performance, and the like.

The invention discloses a magnetic control valve. An air inlet valve element framework, a check valve element framework and an exhaust valve element framework of the magnetic control valve form an integrated valve element set with an air inlet valve element magnetic ring, a check valve element magnetic ring, an exhaust valve element magnetic ring, an air inlet valve magnetic sealing gasket, a check valve magnetic sealing gasket and an exhaust valve magnetic sealing gasket, the magnetic control valve uses magnetic attraction and repulsive force, the problem of spring elasticity failure is avoided, the sealing effect is kept, the service life of the product is prolonged, the magnetic control valve uses the magnetic sealing gasket, sealing pressure is increased, air pressure leakage is prevented, meanwhile, the low temperature resistance is improved, and extremely good sealing performance is still achieved at the extremely low temperature.

The invention discloses a pressure spring manufacturing aid. The pressure spring manufacturing aid comprises a support and an extrusion plate, wherein the extrusion plate is slidably connected with the support; the support comprises a supporting plate and supporting legs; the supporting legs are positioned on the bottom of the supporting plate; a fixing plate is arranged at the left end of the supporting plate; a supporting rod and a guiding rod are arranged on the fixing plate; the guiding rod is positioned above the supporting rod; an arc-shaped groove is formed in the fixing plate; a chute is formed in the supporting plate; the extrusion plate is provided with a guiding hole which is matched with the guiding rod and a through hole which is matched with the supporting rod; the extrusion plate is also provided with an arc-shaped groove; a hydraulic cylinder is arranged at the right end of the supporting plate and is provided with a piston rod, a pressure gauge, an oil inlet tube and an oil outlet tube; the piston rod is detachably connected with the extrusion plate; and the length of the supporting rod is smaller than that of the guiding rod. By the pressure spring manufacturing aid, the shortcomings that two ends of a pressure spring which is machined by the existing small equipment are straight ends and are required to be machined by an auxiliary device further, but equipment for machining hooks in markets is high in cost, complex in structure and low in safety factor are overcome.

The invention discloses an installation tool for a civic building. The installation tool comprises an upper barrel and a lower barrel which are aranged coaxially and connected fixedly. The upper barrel comprises an inner barrel body and an outer barrel body which are arranged in a double-layer mode and connected through a sealing plate. The sealing plate is located in the lower position of the middle of the upper barrel. A first spring is arranged in an interlayer between the inner barrel body and the outer barrel body. The lower end of the first spring is connected to the sealing plate. The upper end of the first spring is connected with four guide sliding blocks. Guide sliding grooves formed in the axial direction are evenly distributed in the side wall of the inner barrel body. Through the installation tool, grub screws can be kept in a perpendicular state to be screwed into wood boards, an ideal fastening effect is achieved, and due to the arrangement of rotary barrels, operation can be conducted conveniently, efficiently and continuously.

The invention relates to an unlocking energy storage spring firing device for oil and gas well perforation initiation and detonation, which is an unlocking energy storage spring firing device for oil and gas well perforation initiation and detonation, and is used for firing the initiator in the detonation device for oil and gas well perforation, solving In the existing firing device, the spring is pre-compressed for a long time in the device to cause the elastic failure of the spring, and the initial energy decreases after the potential energy is rotated, which causes the problem that the detonator cannot be fired. At the same time, the force acting on the firing device is greater than the spring preload. Unlocking and reliable triggering of the detonating device solves the problem that the detonating device used for oil and gas wells cannot preset the detonation pressure, improves the success rate of one-time perforation, saves construction costs, and is more reliable and safer to use.

The invention belongs to the technical field of water discharging devices and particularly relates to a mining anti-blocking automatic water discharging device. The mining anti-blocking automatic water discharging device comprises a cylinder, a water inlet pipe, a draining pipe and an upper cover and is characterized in that an air inlet pipeline is arranged at the bottom of the upper cover, the air inlet pipeline is provided with two air holes, a mechanical valve sleeves the air inlet pipeline and is provided with an upper air inlet and a lower air inlet, the lateral wall of the cylinder is provided with an air inlet and a balance pipe, the air inlet and the balance pipe are communicated with upper air inlet and the lower air inlet through air pipes, the air inlet pipeline is provided with a limit nut, the air inlet pipeline is communicated with a guide rod, the guide rod is provided with a floating cylinder, a limit block is arranged at the bottom of the guide rod, a partition is arranged in the cylinder and comprises a vertical plate, a guide plate at the top of the vertical plate and an arc-shaped plate at the bottom of the vertical plate, the guide plate is located below the water inlet of the water inlet pipe, the arc-shaped plate is located outside the cylinder, the bottom of the arc-shaped plate is connected with the cylinder, the top of the arc-shaped plate is providedwith a horizontal spring door component, and a filter screen is arranged at the bottom of the vertical plate. The mining anti-blocking automatic water discharging device is simple to operate, good inwater discharging performance and capable of effectively solving the problem that an existing mining water discharging device is prone to blocking.

The invention discloses a fully-automatic die-cutting machine gripper and belongs to the technical field of printing and packaging equipment. The fully-automatic die-cutting machine gripper comprises a set of gripper units. Each gripper unit is provided with a cylinder, a fixed gripper piece, a movable gripper piece and a connecting rod, wherein the fixed gripper piece is installed on a gripper bar of a die-cutting machine and hinged to the movable gripper piece, the movable gripper piece is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to a piston rod of the cylinder, and the cylinder is fixed to the gripper bar of the die-cutting machine and connected to a control gas circuit of the die-cutting machine in parallel. The fully-automatic die-cutting machine gripper has the advantages of being simple in structure, small in part number, higher in working reliability and longer in service life.