Patent ID: 7900499

Claim:
A testing apparatus for performing an impact test for a workpiece, the testing apparatus comprising: a workbench comprising a horizontal platform and a connecting member extending up from the platform; a bracket arranged over the platform and connected to the connecting member, the bracket defining a vertical passage; a hammer slidably received in the passage of the bracket; a fastening mechanism slidably mounted to the bracket to be selectively fixed to different heights of the bracket relative to the platform, wherein the fastening mechanism comprises a retaining member capable of being biased between a fist position to hold the hammer and a second position to release the hammer; and an anvil disposed on the platform and aligned with the passage, configured for supporting the workpiece; wherein the bracket comprises a first sidewall, the fastening mechanism further comprises: a sliding member comprising a sliding block slidably received in the passage of the bracket and abutting against an inside surface of the first sidewall of the bracket; and a knob engaging with the sliding member and abutting against an outside of the first sidewall of the bracket; wherein the knob is capable of being adjusted to move toward the sliding member to snuggly sandwich the first sidewall of the bracket, or to move away from the sliding member to release the first sidewall of the bracket; wherein the fastening mechanism further comprises a retaining member and a connecting pole extending from the retaining member, the retaining member comprises a frame received in the passage of the bracket, to engage with or disengage from the hammer, the connecting pole passes through the sliding member and the knob.