Relaxation tester for Prestressed Concrete steel wire and strand

摘要

The invention PCs; relates (PC Prestressed Concrete) wire, and the speech beam stress relaxation testing.; Stress relaxation testing machine of the present invention, reducer (2) that by reducing the number of the synchronous motor 1 to be mounted on one side of the bottom surface of the cube shape of the base frame 4 and the base frame, the rotation of the synchronous motor increases the rotational driving force and, is supported by the bracket 18 of the gear case 3 attached to the lower base frame, an upper gear-connected from the center of the horizontal gear 12, the gear 12 of the disc shape to receive transmitting power from the speed reducer a by the upper and lower support tube 22, 21 and the lower chuck holder coupled to the upper end of the vertical gears to prevent flow during the vertical movement of the vertical gear (5) and the vertical gear of the vertical reciprocating screw (screw) shaped to 13, and the chuck 6 and, between the four support erected on the upper surface of the four corners of the base frame 7, and these upper end of the plate 10 is assembled so as to be parallel with the upper surface of the base frame in between the support, the plate mounted on the bottom of the center Control of the test material (20) measuring the load and the load cell (9) for delivering the signal to the control unit, and the upper chuck holder 14 and the chuck (8) directly connected to the lower portion of the load cell, various driving force applied to the a structure consisting of a control panel section 30 that displays a test result is characterized.; Stress relaxation testing machine of the present invention is not only easier to use the standard parts of the country, the maintenance management of a production By testing machine, written because implemented through the required functionality simple mechanical structure, does not have to be a separate specialized operating personnel of possible testing operation It is designed to have possible advantages rapid test measurements.