Combined tie rods for impact tension

Abstract

The invention discloses a combined type draw bar bearing impact tension. The draw bar comprises a core bar, and steps arranged at two ends of the draw bar respectively. The core bar comprises threaded sections arranged at two ends of the core bar respectively, and a gauge section arranged in the middle portion of the core bar. Internal threaded holes are arranged on the steps. The steps are connected with the core bar at the two ends of the core bar respectively through threads arranged on the two ends of the core bar, and the steps are riveted and locked with the core bar through end faces of the steps. According to the invention, machining difficulty of the draw bar can be reduced, and material utilization is improved while machining working hour is reduced.

Description

technical field [0001] The invention relates to a special alloy steel tie rod product subjected to impact stretching, in particular to a combined pull rod enduring impact stretching. Background technique [0002] In order to prevent impact damage to the protected object, some kind of buffer material or mechanism is usually used to absorb the impact energy by its deformation, destruction or action, so that the impact force acting on the protected object can be significantly reduced and protected from damage. The tie rods involved in the present invention are such cushioning and energy-absorbing products. When the relevant mechanism is impacted, the compressive stress is converted into the tensile stress of the tie rod through a certain structure, and then the plastic deformation of the tie rod material is used to absorb the impact energy. The maximum cross-sectional dimension of the tie rod is Φ10mm. The original processing technology adopts the integral turning of the roun...

AI Technical Summary

Problems solved by technology

In order to ensure that the tie rod material achieves ideal comprehensive mechanical properties, especially extremely high plasticity, a variety of precious alloy elements must be added, and special smelting equipment and processes must be used for melting and casting, and a series of thermal processing must be carried out before machining , such as forging, rolling and heat treatment, the material cost is very high

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