The utility model content
For above-mentioned technical matters, the compression deformation measurement mechanism that provides a kind of measuring accuracy high is provided the purpose of this utility model.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of compression deformation measurement mechanism, comprise gage beam, lower gage beam and electronic extensometer, two of described electronic extensometer is measured blade and is directly contacted with the outer wall of described upper and lower gage beam guide pole, and vertical with described guide pole axis.
Distortion during sample (part) pressurized is converted to the relative shift of measuring guide pole by the utility model compression deformation measurement mechanism, because the measurement mechanism that this displacement is adopted is electronic extensometer, has guaranteed measuring accuracy and accuracy.Precision problem on the low side improves the precision that test specimen compression deformation is measured greatly when having solved the displacement that utilizes universal testing machine to load crossbeam and replacing the deflection of test specimen (part).
Below in conjunction with accompanying drawing the utility model is made and to be further specified.
As shown in the figure, the support 1 of carrying magnetic seat steadily is installed on the workbench or other firm planes of testing machine, upper gage beam 2 is fixed on the support 1 by gib screw 4, the side of the moving press plate 23 that magnetic or the gib screw 22 of lower gage beam 3 by erection support 20 is installed on testing machine; Upper gage beam 2 mainly is comprised of the guide pole 12 in slidable adjustment bearing 6, set nut 7, the threaded adjuster bar 8 of front end, adjusting bolt 10, spirit bubble 11, tape guide hole, wherein adjuster bar 8 front ends are connected with slidable adjustment bearing 6 by screw thread, and can utilize set nut 7 fixing, the rear end is connected with guide pole 12 by pin 5 and spring 9, and spirit bubble 11 is installed in the end upper surface of guide pole 12; Lower gage beam 3 mainly is comprised of guide pole 13, spirit bubble 14, adjusting bolt 15, connecting rod 18, the magnetic erection support 20 of tape guide pin, wherein guide pole 13 is connected with connecting rod 18 by pin 16, spring 17, and connecting rod 18 is connected with erection support 20 by rotating shaft 19, fixing spring 21; Measure blade and be connected with the guide pole 12 of upper gage beam 2, the guide pole 13 of lower gage beam 3 respectively for two of electronic extensometer 24.
Lower gage beam 3 is installed on the side of the moving press plate 23 of testing machine, adjusts adjusting bolt 15 by eye-level bubble 14, guarantee that lower gage beam 3 is in horizontality, eye-level bubble 14 guarantees that it is placed in the middle simultaneously.
The pilot hole of upper gage beam guide pole 12 is enclosed within on the guide finger of lower gage beam guide pole 13, and the support 1 with magnetic support that will be connected with upper gage beam 2 is installed on the stable table plane, adjust adjusting bolt 10, eye-level bubble 11 guarantees that it is placed in the middle, guarantees that simultaneously upward the guide pole 12 in the tape guide hole of gage beam 2 is without hindrance with the relative motion of the guide pole 13 of the tape guide pin of lower gage beam 3.
Guarantee that the guide pole 12 in tape guide hole and the guide pole 13 end surface of contact of tape guide pin have certain gap, tighten the set nut 7 of 6 of the threaded adjuster bar 8 of front end and slidable adjustment bearings, tighten the gib screw 4 with 6 of the support 1 of magnetic support and slidable adjustment bearings.Electronic extensometer 24 is installed between the guide pole 13 of the guide pole 12 in tape guide hole and tape guide pin, two of electronic extensometer 24 is measured blade and is directly contacted with the guide pole side respectively, guarantees during installation that the up and down two measurement blades of electronic extensometer 24 are vertical with recessed guide pole axis respectively.
The guide pole 13 of tape guide pin is connected with connecting rod 18 by spring 17, pin 16, utilizes the regulatory function of adjusting bolt 15, when the guide pole 13 that has guaranteed the tape guide pin is connected with connecting rod 18 on same axis.Connecting rod 18 and connect with adopting rotating shaft 19 to add two fixing springs 21 between the erection support 20 of gib screw, when having guaranteed to install connecting rod 18 with the erection support 20 of gib screw on same level.
The effect of spring 17, fixing spring 21 is to make the guide pole of tape guide pin 13, connecting rod 18, not interrupted with the connection between erection support 20 threes of gib screw, is convenient to the connection of the moving press plate 23 of lower gage beam 3 and testing machine.
Adopt spring 9 to be connected with pin between the guide pole 12 in tape guide hole and the threaded adjuster bar 8 of front end and is connected, by the adjustment of adjusting bolt 10, the guide pole 12 in assurance tape guide hole and the threaded adjuster bar 8 of front end are on same level.
By being connected of set nut 7, guaranteed that the threaded adjuster bar 8 of guide pole 12, front end, slidable adjustment bearing 6 in tape guide hole are on same axis between the threaded adjuster bar 8 of front end and the slidable adjustment bearing 6.
Slidable adjustment bearing 6 and support 1 with magnetic support connect by gib screw 4, guarantee that slidable adjustment bearing 6 comprises the guide pole 12 in the threaded adjuster bar 8 of front end, tape guide hole, and be mutually vertical when support 1 with magnetic support is connected.
Vibration isolator 25 is placed on the fixation clip 26, move down the moving press plate 23 of testing machine, the moving press plate 23 of testing machine is just contacted with vibration isolator 25, when testing machine moving press plate 23 moves down, sample (part) pressurized produces distortion vertically downwards simultaneously, the lower gage beam 3 that drive is installed on moving press plate 23 sides of testing machine moves down, upper gage beam 2 is fixed, be connected in guide rod electronic extensometer 24 up and down between blade distance move down with the guide pole 13 of tape guide pin on the lower gage beam 3 and to change, the deformation signal of electronic extensometer 24 is by the computer software collection, obtain deflection, the deflection that this deflection produces when being sample (part) pressurized.
The description of above embodiment is comparatively concrete, detailed; but can not therefore be interpreted as the restriction to this patent scope; should be noted that; for the person of ordinary skill of the art; without departing from the concept of the premise utility; can also make some distortion and improvement, these all belong to protection domain of the present utility model.