42results about How to "Extended collision time" patented technology

A waveform beam guardrail plate and a waveform beam steel guardrail are provided. In which, the guardrail plate includes a main body (15) and two rings (16, 17) with a same structure installed axial symmetrically on an upper and a lower edges of the main body; furthermore, a transverse section of the main body has an arc shape, and the upper and lower edges of the main body of the guardrail plate are curled inwardly and helically toward a protruding direction of the main body of the guardrail plate for forming the two rings (16, 17). The waveform beam steel guardrail includes numbers of guardrail plate units (1, 11), upright posts (2) and preventing blocks (3), and the guardrail plate units (1, 11) are connected with the upright posts (2) by the preventing blocks (3).

The invention discloses a buffering upright composed of an upright body, an upright cap and the like, wherein the upright body is composed of an upright body I, an upright body II and a connecting part III, wherein the upright body is integrally in the shape of the Arabic numeral 8; and the upright body looks like being formed by abutting two unclosed circular tubes or elliptical tubes; but, actually, the upright body is integrally formed form an entire steel plate through rolling. The buffering upright can be designed into different single sizes or a multiple combination structure according to specific anti-collision grades; and the buffering upright is ingenious and beautiful in appearance, high in anti-collision and buffering capabilities, and capable of improving the overall safety protection and landscape setting levels of highways and bridges.

The invention relates to the technical field of machine tools, and discloses a collision-prevention device and a machine tool. The collision-prevention device comprises a socket, a guide rod and an elastic element, wherein the guide rod is telescopically arranged in the socket, and the elastic element is used for maintaining the guide rod in the extended state. With the collision-prevention device provided by the embodiment of the invention, impact energy generated by collision between a base body and a moving component during use can be effectively absorbed, the collision time is prolonged, elastic opposite force is generated, and the elastic collision between the base body and the moving component and the spacing of the moving element are realized. In addition, the entire device requires fewer components and has simple structure, easiness in assembly and good impact resistance, and the service life and the working accuracy of the moving component, the base body and relative functional components are increased.

A crashproof guard bar includes a guard bar base (1), a column (2), a bridging beam (3) and an energy-absorbing screw thread member (4). The guard bar base (1) is F type and is set across the road bed. The rear segment of the basic bridging beam (11) on the guard bar base (1) is disposed with a guide groove (12). A hole (13) is disposed in the basic bridging beam (11) at the front end of the guiding groove (12) along longitudinal direction, and is disposed with the energy-absorbing screw thread member (4). The column (2) is disposed in the guide groove (12) and is connected to the energy-absorbing screw thread member (4). The bridging beam (3) is disposed in front of the column (2) and is connected with the column (2). The invention has firm base, will not occupy effective running road surface, can generate buffer energy-absorbing function when the vehicle crashes the guard bar, and can crash intensity and has good guide ability, and can farthest reduce the damage to the vehicle and passenger from the crash. The invention is especially adapted for the pavement anti-collision guard bar on cliff and bridge anti-collision guard bar.

The invention discloses an automobile collision bumper, and relates to the technical field of automobiles. The automobile collision bumper comprises a hydraulic buffer mechanism fixed to the front end and / or the rear end of an automobile chassis, wherein the hydraulic buffer mechanism comprises at least three crush buffer units which are connected in series in an end-to-end mode, each crush buffer unit comprises a sleeve, each sleeve is provided with a crush rod with a pointed end in a sliding seal mode, a blocking sheet is fixed to the outer side of the pointed end of each crush rod in a sealing mode and is arranged on the inner wall of the corresponding sleeve, a liquid chamber filled with liquid is arranged between each blocking sheet and the corresponding crush rod and is arranged in the corresponding sleeve, and a drainage hole is formed in the portion, on the outer side of the corresponding liquid chamber, of each sleeve. The automobile collision bumper has the advantages that when the automobile collision bumper is installed on an automobile, due to the facts that the multiple levels of crush buffer units which are connected end to end are used, the blocking sheets are crushed step by step, and liquid is ejected out at a high speed, kinetic energy in the collision process of the automobile is converted, the collision time of the automobile can be prolonged, impact force is reduced, kinetic energy generated in the collision process can be absorbed, and the purpose that a human body and an automobile body are protected against damage at the same time is achieved.