Self-locking clamp suitable for ultralow-temperature steel bar tension test and using method of clamp

Self-locking clamp suitable for ultralow-temperature steel bar tension test and using method of clamp

  • CN 104,034,579 A
  • Filed: 06/18/2014
  • Published: 09/10/2014
  • Est. Priority Date: 06/18/2014
  • Status: Active Application
First Claim
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1. one kind is applicable to the self-locking jig of ultralow temperature steel bar stretching test, it is characterized in that:

  • described self-locking jig comprises low-temperature test chamber (1), reinforcing bar sample (2) and for reinforcing bar sample (2) being fixed on to the fixture in low-temperature test chamber (1), described fixture comprises fixture (3) and lower clamp (4), upper fixture (3) and lower clamp (4) be one end of connecting reinforcement sample (2) respectively, and is fixed on low-temperature test chamber (1), one end that described upper fixture (3) and lower clamp (4) coordinate with reinforcing bar sample (2) is that cross section is the hollow shape tube-in-tube structure of U-shaped, the internal diameter of U-shaped openend is less than the internal diameter of U-shaped bottom, and the inwall of hollow shape sleeve is smooth bevel transition to bottom from openend, described self-locking jig also comprises the voussoir (5) that is arranged on hollow shape sleeve inner, the face that voussoir (5) coordinates with hollow shape sleeve ramp is smooth bevel, a face relative with smooth bevel is the arc surface coordinating with reinforcing bar sample (2), upper fixture (3) is connected with universal tensile testing machine with the other end of lower clamp (4).

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