11 results about "Impact energy" patented technology

The invention discloses a mounting-free and rapidly-dismounted road guardrail, and belongs to the technical field of road traffic equipment. The mounting-free and rapidly-dismounted road guardrail comprises a plurality of assembly units, every two adjacent assembly units are connected into a whole through a pin shaft, each assembly unit comprises an elastic rotating body and a guardrail body, each guardrail body comprises circular arc plates symmetrically arranged, each guardrail body is in an n shape, tubular supporting pieces are arranged on each guardrail body at intervals, each elastic rotating body is rotatably combined with the corresponding tubular supporting piece, cross fences are horizontally mounted on the upper portion of the tubular supporting pieces, the two ends of each of the guardrail bodies and the cross fences are provided with connecting pin holes, the pin shafts are mounted in the connecting pins holes in an inserted mode to be connected with adjacent guardrail bodies and the cross fences together. The mounting-free and rapidly-dismounted road guardrail can absorb impact energy well, the effects of buffering, stabilizing and guiding on vehicles can be achieved, the vehicles are prevented from penetrating through the guardrail and being crushed with opposite vehicles, thus crush rebound risks are decreased, and the road guardrail does not need to be fixed to a central line of a road or the edge of the road, the road guardrail can be dismounted partially at any time or removed wholly, and accordingly convenience is brought to road repairing or widening.

A washing machine includes an appliance housing having a front housing part and a rear wall, and includes a washing assembly capable, in an operating mode, of oscillating relative to the appliance housing. The washing assembly includes a washing drum and a suds container enclosing the washing drum. A holding device is attached to the suds container. A shipping protection arrangement including a rod is provided for protecting the suds container against shocks. The rod is connected in a force-locking manner to the washing assembly via the suds container and via the holding device. The holding device includes a through-hole for receiving the rod and includes a plurality of openings forming a plurality of connecting links extending from the through-hole to an edge of the holding device so as to permit elastic, semi-elastic, and/or plastic deformations of the holding device for cushioning of impact energy generated from shocks.

The invention discloses a tough composite buffer for a slope flexible protection system. The tough composite buffer comprises a support steel pipe, a sliding plate, a buffering spring and a first steel inhaul cable; the two ends of the support steel pipe are fixed on a spring base plate and a pull anchor plate correspondingly; a sliding plate hole is formed in the sliding plate, and the supporting steel pipe penetrates through the sliding plate hole so that the sliding plate can be arranged on the supporting steel pipe in a sliding and sleeving mode; the buffering spring is arranged on the supporting steel pipe in a sleeving mode, and the two ends of the buffering spring are connected to the spring base plate and the sliding plate correspondingly; one end of the first steel inhaul cable penetrates through the sliding plate and is anchored on the sliding plate through a metal rope anchor, and the other end of the first steel inhaul cable is connected to a first supporting rope; when the impact energy of the system is within a normal working energy level range, the buffering spring works independently, generates elastic deformation and recovers along with cleaning of falling rocks; and when the impact energy exceeds the normal working energy level, a starting supporting steel column is bent to achieve composite energy consumption.

A high-weatherability and -strength water conservancy net for protecting slope of dike and treating foundation is composed of net ribs and nodes which is the cross point of net ribs. The net check has diamond shape. Its advantages are high stability, strength and impact resistance.

The invention discloses a welding method for ensuring the bulletproof property of a bulletproof steel plate welded joint, and belongs to the technical field of ultrahigh strength steel welding. The method comprises the steps that a steel plate welding face is subject to oil removal and rust removal; a first bulletproof steel plate with the thickness being 2 mm to 4 mm and a second bulletproof plate with the thickness being 4 mm to 8 mm are in lap joint welding, the tensile strength ranges from 1400 MPa to 2200 MPa, and a buffer layer steel plate with the thickness being 0.6 mm to 1.2 mm is added in the middle; the three layers of steel plates are stacked and pressed until no gap exists, laser welding is adopted, the laser power ranges from 2.5 kw to 5.5 kw, and the buffer layer steel plateis made of low-carbon soft steel. The method has the beneficial effects that the joint softening area is narrow, the buffer layer steel plate is used for absorbing shooting impact energy, and the crack expansion path is obstructed.

The invention discloses a surface-strengthened inner step shaft inner hole precision forming process. The process comprises the following steps that firstly, a blank is designed, and a lubricant is pumped into an internal area formed by a lubricant main runner and lubricant sub-runners of a mandrel; the mandrel and the blank are assembled, a rotary swaging machine is mounted through a mounting hole at the rear portion of the mandrel, the mandrel and the blank are subjected to high-frequency forging of a forging die together, and a large inner hole is formed through rotary swaging; then the positions of the mandrel and the blank are adjusted, rotary swaging is started from the protruding position of the blank, and a small inner hole is formed through rotary swaging; a die for strengthening is replaced and used, the rotary swaging machine is assembled, the rotating speed of a motor of the rotary swaging machine is reduced, so that the impact energy of the die is reduced, the overall surface of the blank subjected to inner hole rotary swaging is forged, uniform pressure stress is added to the surface of the blank, and the surface secondary strengthening effect similar to shot blasting impact is achieved; and finally, a workpiece is taken away. The inner hole forming can be guaranteed, the surface of a shaft can be effectively strengthened, and the fatigue strength is improved.

The invention discloses an easily-welded low-yield-ratio quenched and tempered oil storage tank steel plate and a manufacturing method thereof. The easily-welded low-yield-ratio quenched and tempered oil storage tank steel plate comprises the following chemical components in percentage by mass: 0.06 to 0.09 percent of C, 0.15 to 0.25 percent of Si, 1.50 to 1.70 percent of Mn, 0.010 to 0.030 percent of Ti, 0.040 to 0.050 percent of V, 0.08 to 0.15 percent of Mo, 0.20 to 0.30 percent of Ni, less than or equal to 0.012 percent of P, less than or equal to 0.008 percent of S and the balance of Fe and inevitable impurities. A quenched and tempered heat treatment method is adopted for the steel plate within the thickness range of 12-35 mm, the yield ratio is smaller than or equal to 0.90, and when heat input of the steel plate reaches 100 KJ/cm, the impact energy of the post-welding welding heat affected zone at -15 DEG C is larger than or equal to 80 J.