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Magnetic device and method for fixing rock axial tensile specimen extensometer auxiliary assembly

A technology of auxiliary components and extensometers, used in measuring devices, using stable tension/pressure testing materials, instruments, etc., can solve the problems of low test success rate and poor installation accuracy, and achieve flexible rotation, less intervention, The effect of improving accuracy

Active Publication Date: 2016-02-24
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a device and method for magnetically fixing the auxiliary component of the extensometer of the rock shaft tensile test piece, which solves the problems of poor installation accuracy and low test success rate

Method used

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  • Magnetic device and method for fixing rock axial tensile specimen extensometer auxiliary assembly
  • Magnetic device and method for fixing rock axial tensile specimen extensometer auxiliary assembly
  • Magnetic device and method for fixing rock axial tensile specimen extensometer auxiliary assembly

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Embodiment

[0024] The installation device of the magnetic suction type used for fixing the auxiliary assembly of the extensometer of the rock shaft tensile sample of the present invention comprises the following components: (1) T-shaped handles 1 in total 4 pairs; (2) steel frames 2 with threaded holes (threaded holes 4 pair); (3) 2 bases 3 with foot pads 7; (4) 4 pairs of turntables and chassis; (5) four sets of arc magnetic attraction devices 5 with reinforcing magnets 6 and centering marks 12 (3 in each group); (6) 4 pairs of rubber pads 9 in total; (7) cylindrical concrete specimens (4 in each group); (8) extensometer accessories 13 in 8 groups in total (3 in each group); (9) 4 pairs of shells 8; (10) 4 pairs of force transmission steel plates 10; (11) 16 groups of rotating steel balls 11 (12 in each group).

[0025] Such as figure 1 and Figure 4 As shown, the steel frame 2 is provided with an upper crossbeam and a lower crossbeam, and four T-shaped handles are threaded on the upp...

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Abstract

The invention discloses a magnetic device and method for fixing a rock axial tensile specimen extensometer auxiliary assembly. The device comprises a steel frame; the steel frame is provided with an upper beam and a lower beam; a plurality of T-type handles are connected to the upper beam through screw threads; turntables are installed on the lower ends of the T-type handles; chassis paired with the turntables are arranged on the lower beam; guide grooves extend on the turntables and the chassis; guide rods passing through the guide grooves are arranged on the lower beam; a plurality of groups of paired reinforcement magnets are arranged on the turntables and the chassis; each reinforcement magnet is connected with an arc magnetic suction device; the arc surface of the arc magnetic suction device adsorbs an extensometer auxiliary assembly; and one end of the extensometer auxiliary assembly is bonded with a rock cylinder core specimen. The operation steps using the test device provided by the invention rely on the designed centering scribed lines to realize positioning and centering; and artificial fuzzy operation intervention is less, so as to ensure the accurate position of the extensometer and the bond end of the rock specimen.

Description

technical field [0001] The invention relates to a device and a method for magnetically fixing an auxiliary component of an extensometer of a rock axial tension test piece, and belongs to the field of rock mechanics testing and engineering testing. Background technique [0002] Since the axial tensile properties of brittle materials such as rocks have attracted more and more attention, there is an urgent need for a complete set of solutions that can accurately install extensometer accessories on rock axial tensile specimens. At present, it is not uncommon to mention the rock axial tension test program at home and abroad, but there are few mentions about the process of accurately installing the extensometer accessories on the rock axial tension test piece. If the extensometer accessories installed on the rock shaft tensile test piece are not accurate enough, the bonding may not be firm enough, which may cause the extensometer to not change in the axial direction, or even fall ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/02
CPCG01N3/02G01N3/08
Inventor 吴楠朱珍德孙赑石崇
Owner HOHAI UNIV
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