CN204389448U - Damage of rock test acoustic emission test sensor assembly type locating device - Google Patents
Damage of rock test acoustic emission test sensor assembly type locating device Download PDFInfo
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- CN204389448U CN204389448U CN201520092730.9U CN201520092730U CN204389448U CN 204389448 U CN204389448 U CN 204389448U CN 201520092730 U CN201520092730 U CN 201520092730U CN 204389448 U CN204389448 U CN 204389448U
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Abstract
The utility model discloses a kind of damage of rock test acoustic emission test sensor assembly type locating device, the installing mechanism comprising locating device framework, install the mount pad of acoustic emission test sensor, acoustic emission test sensor be fixed on the fixation kit in mount pad and mount pad be installed on locating device framework, locating device framework is package assembly toroidal frame, becomes an integral ring-shaped framework by ring block by positioning and fixing structure assembling components; Mount pad is the tube structure that inner chamber and acoustic emission test sensor outer rim match; Installing mechanism is can the installing mechanism of automatic axial adjustment mount pad position, and total fourth officer, be positioned at the same cutting plane of locating device framework, arrange in opposite directions between two, two installation site lines are mutually vertical.The test specimen of installation artificially that the utility model overcomes the existence of existing stationary installation can not ensure that sensor plane center and the face of cylinder are tangent, sensor emission face central shaft, to the difficult problem do not overlapped with cylinder specimen diameter, improves testing efficiency, accuracy and authenticity.
Description
Technical field
The utility model relates to the material test specimen such as rock, concrete mechanical test technical field of measurement and test, the fixing device for acoustic emission test sensor particularly used in the material test specimen such as rock, concrete damage measure.
Background technology
In rock mechanics experiment, when testing the characteristics of Acoustic Emission in damage of rock process, the acoustic emission test sensor used there is no special stationary installation, and current experimental test generally adopts adhesive tape to be wound around or bungee colligation two kinds of fixed forms.Acoustic emission test sensor diameter is usually between 5mm-15mm, in testing experiment, in order to make acoustic emission test sensor be coupled better with test specimen, butter or vaseline etc. usually need be used as couplant, be applied between acoustic emission test sensor transverse plane and test specimen.But these measures can not ensure the depth of parallelism of acoustic emission test sensor transverse plane and test specimen coupling surface and the good coupling with test specimen, test specimen especially in irregular shape is difficult to fix especially.Moreover the couplant such as butter or vaseline easily causes adhesive tape bonding to reduce or lost efficacy, and be radially expanded in distortion at test test specimen, adhesive tape easily forms larger constraint to acoustic emission test sensor, makes its stressed increase, even makes it cause certain damage; Extend although bungee colligation is radially expanded tension in distortion at sample, can there is certain distortion, but this fixed form very easily causes acoustic emission test sensor to roll, and is difficult to the good contact ensureing acoustic emission test sensor and test specimen.In addition, above-mentioned two kinds of fixed forms all need be carried out before test preload, and can not adjust in process of the test, and extremely difficulty makes acoustic emission test sensor exactitude position.Also there is following problem in above-mentioned two kinds of fixed forms: (1) is difficult to the consistance ensureing that in same batch of test specimen test, acoustic emission test sensor is stressed, and form more false signal very easily in testing, to the analysis of test result, judge to cause extreme difficulties.(2) very inconvenient to the installation of other deformation test sensors.
In order to overcome the problems referred to above, inventor has has successively researched and developed fixing device for acoustic emission test sensor (ZL200910059594.2) and fixing device for universal acoustic emission test sensor (ZL200910059593.8), the basic structure of two stationary installations is: two pedestals for installing acoustic emission test sensor are arranged on the free end of the cantilever lever be fixedly connected with pitman shaft two ends respectively, and the end face being arranged on two acoustic emission test sensors of cantilever lever free end is parallel to each other.In the use of these two kinds of fixing device for acoustic emission test sensor, inventor finds that they can not solve invention imagination problem to be solved well.Its reason is, test specimen is in experimental test process, until the whole test process destroyed from loading, test piece deformation is changing always, the acoustic emission test sensor of two armed lever free ends of sensor installation, because the be fixedly connected syndeton length of cantilever lever of pitman shaft two ends is changeless in test specimen whole experimental test process, thus can cause the end face of sensor can by initial parastate, be changed to uneven " eight sons " state, and then the validity that sensor side planar central can be caused to be coupled with test specimen center reduces, affect test accuracy.For cylindrical sample test specimen, be difficult to ensure that sensor riding position just in time makes the end face center of sensor by test specimen diameter, namely sensor side plane and the tangent contact site of cylinder specimen cylinder are difficult to ensure to be the center of sensor side plane, the end face center of sensor is then signal monitoring active component, because sensor side plane center fails effectively to contact with test specimen, cause measuring-signal to be forbidden, even cause recording signal.Although fixing device for universal acoustic emission test sensor disclosed in ZL200910059593.8, can adjust the direction of sensor acoustic emission plane, but the center of sensor side plane effectively contacts with surface of test piece after in practical operation, testing crew is still difficult to ensure adjustment, more cannot ensure that the line adjusting latter two symmetrical sensor side planar central is by test specimen diameter or kernel of section, and can cause with the setting position in control software design inconsistent, thus still fail to guarantee to test completely successfully with the reliability of result.Because sensor riding position is provided with accurate location in control software design, for cylinder specimen just by test specimen diameter, square test specimen is just by kernel of section, but it is consistent with arranging in control program when these two kinds of stationary installations existing are all difficult to guarantee install, thus the result recorded is caused to be forbidden, larger with actual variance.
Summary of the invention
For the deficiency that the fixing device for acoustic emission test sensor of prior art exists, the purpose of this utility model aims to provide a kind of damage of rock test acoustic emission test sensor assembly type locating device of new construction, to guarantee that the riding position of acoustic emission test sensor makes the center position in sensor acoustic emission face just by the center of circular test specimen diameter or rectangular coupon, and guarantee and the position consistency that arranges in control software design, improve testing efficiency, the accuracy of test and authenticity.
The utility model provides damage of rock test acoustic emission test sensor assembly type locating device, the installing mechanism comprising locating device framework, install the mount pad of acoustic emission test sensor, acoustic emission test sensor be fixed on the fixation kit in mount pad and mount pad be installed on locating device framework, described locating device framework is package assembly toroidal frame, is assembled into an integral ring-shaped framework by 2 ~ 4 pieces of ring blocks by positioning and fixing structure; Described mount pad is the tube structure that inner chamber and acoustic emission test sensor outer rim match, and barrel wall is designed with sensor wiring and draws breach; Described installing mechanism be can automatic axial adjustment mount pad position installing mechanism, total fourth officer, be positioned at the same cutting plane of locating device framework, arrange in opposite directions between two, article two, installation site line is mutually vertical, makes the line of two the sensor side planar central be oppositely arranged be installed on locating device framework by mount pad, erecting frame by test specimen diameter or test specimen kernel of section.
In technique scheme of the present utility model, described locating device framework is preferably designed to split ring block by 2 pieces and is assembled into an integral ring-shaped framework by positioning and fixing structure.Described positioning and fixing structure comprises the fixed structure piece that the location docking structure formed by two ring block craft port is secondary and be fixed together by two ring blocks.The concrete structure of positioning and fixing structure can be designed to various structures form, as shown in Fig. 8-1 to Figure 14-2.
In technique scheme of the present utility model, described locating device framework can be assembly type annular framework or straight-flanked ring framework, for cylinder specimen, locating device framework both can be assembly type annular framework, also can be assembly type straight-flanked ring framework, for rectangular coupon, locating device framework generally adopts assembly type straight-flanked ring framework.
In technique scheme of the present utility model, described fixation kit, except can being designed to by the open annular spring leaf put by acoustic emission test sensor hoop on mount pad and being formed by the locking mechanism that open annular spring leaf opening is locked, also can be designed to other versions.Described locking mechanism can adopt snap lock structure, bolt and nut locking mechanism or other forms of locking mechanism.
In technique scheme of the present utility model, as the described cylindrical shell of mount pad, the breach that its barrel wall designs, not only as the breach of drawing for sensor wiring, for the structure, the breach of cylindrical shell or this fixed sturcture component part that by open annular spring leaf acoustic emission test sensor are fixed in mount pad.The breach of cylindrical shell is unsuitable excessive, and Notch angle is generally not more than 120 degree.
In technique scheme of the present utility model, described installing mechanism can be paid the utmost attention to and be designed to: comprise the sliding bar be fixedly connected with mount pad, be nested with outside sliding bar, one end acts on mount pad, the spring that the other end acts on locating device frame inner wall and the bearing be fixedly installed in locating device framework outside wall surface, described bearing is guide cylinder structural bearings, be fixedly installed perpendicular to locating device framework outside wall surface, the major diameter fit of internal diameter and sliding bar forms sliding pair, sliding bar is arranged in guide cylinder axially slidably through the mounting hole on locating device framework, stretch in outside sliding bar and the body of rod outside guide cylinder is designed with limit slippage bar and slides axially position limiting structure.
In above-mentioned installing mechanism, the position limiting structure of the inside sliding position of limit slippage bar, the bolt and nut position limiting structure be made up of the screw thread on sliding bar and the nut that matches with it can be designed to, also the pin-and-hole pin position limiting structure be made up of the pin-and-hole on sliding bar and the pin that matches with it can be designed to, or other versions; As the guide cylinder of erection support, with fixing of locating device framework wall, can be welded and fixed, screw thread pair also can be taked to fix; The mode that sliding bar and acoustic emission test sensor mount pad are fixedly connected, can take weld connection, and screw thread pair also can be taked to connect.
In technique scheme of the present utility model, for the ease of the layout of acoustic emission test sensor wiring, the outer approaching channel hole of acoustic emission test sensor wiring can be designed on locating device framework.
The damage of rock test acoustic emission test sensor assembly type locating device that the utility model provides, find them in the inventor's formerly fixing device for acoustic emission test sensor (ZL200910059594.2) of front proposition and actual use procedure of fixing device for universal acoustic emission test sensor (ZL200910059593.8), for cylindrical sample test specimen, not only be difficult to ensure that sensor and the test specimen position that fits is sensor side planar central, also be difficult to ensure that riding position just in time makes the transverse plane center of sensor by test specimen diameter, and sensor riding position is provided with accurate location in control software design, namely for cylinder specimen just by test specimen diameter, for square test specimen just by kernel of section, due to stationary installation be difficult to guarantee that test specimen is installed time, make the position consistency arranged in sensor side planar central position and control program, thus the result recorded is caused to be forbidden, complete with problem existing for the larger grade of actual variance.
The damage of rock test acoustic emission test sensor assembly type locating device that the utility model provides, by install in the orthogonal both direction of same cutting plane of integral ring-shaped structure locating device framework fourth officer can automatic axial adjustment mount pad position installing mechanism, not only ensure that and be arranged on the transverse plane center that position that acoustic emission test sensor in mount pad and cylinder specimen cylinder fit is always sensor, also assures that the position consistency arranged in sensor mounting location and control program, namely between two the transverse plane center of symmetrical four acoustic emission test sensors installed just by the kernel of section of cylinder specimen diameter or rectangular coupon, this can not only obtain metrical information as much as possible in same specimen test process, and when can guarantee test specimen installation testing, sensor side planar central position is consistent with setting position in control program, thus ensure that testing efficiency, the accuracy of test and authenticity.The stationary installation that the utility model provides, not only can ensure sensor mounting location and programming position consistency, can also guarantee that in daubing coupling agent process, sensing station is in precalculated position all the time, and guarantee that sensor side planar central and test specimen are in good coupling state.Inventor is disclosed ZL200910059594.2 stationary installation and ZL200910059593.8 stationary installation formerly, although daubing coupling agent can be passed through before or after acoustic emission test sensor is arranged on test specimen, make every effort to make sensor side planar central and test specimen be in good coupling state, obtain accurate and real detecting information, no matter but smear before the mounting or smear after mounting, all can not reach hope well.Smear before the mounting and can not ensure the diameter of the line of centres of mounted two sensor side planes by cylinder specimen or the center in rectangular coupon cross section, can not guarantee that sensor and cylinder specimen cylinder bonding position are the center of sensor; Smear after installation again, then can in the process of smearing, cause sensor mounting location to change, the position that sensor not only can be made to contact with test specimen be the center of sensor, also can make two sensors out of position, with arrange in control program inconsistent.Two kinds of modes of smearing all can cause test result inaccurate or cannot Validity Test.
The specially designed installing mechanism of the utility model, be a kind of can automatic axial adjustment mount pad position installing mechanism, the spring outside sliding bar is nested with between mount pad and locating device frame inner wall face, not only ensure that sensor side plane and surface of test piece keep close contact, when also assures that test specimen is radially expanded in test, the stressed of acoustic emission test sensor can not be increased, can ensure the same batch of test test specimen consistance that acoustic emission test sensor is stressed in testing simultaneously.This not only can reduce false signal affects test result, also thus can improve the serviceable life of acoustic emission test sensor.And inventor's formerly disclosed stationary installation, because two the parallel cantilever bars fixing two acoustic emission test sensors are linked together by connecting link, after two acoustic emission test sensors are installed on test specimen, this connecting link is positioned at test specimen side, when test specimen destroys suddenly in testing, to the side oscillation of connecting link place, can may there is this side and hit on testing machine loading frame in the entirety that stationary installation and two acoustic emission test sensors are formed, cause sensor degradation or measuring accuracy to decline.The utility model, owing to being monolithic construction, is nested with outside test specimen in test, when test specimen destroys suddenly, stationary installation can be suspended in test in midair, can avoid bumping against on testing machine, thus can more effective low protection sensor.
Test specimen is in experimental test process, until the whole test process destroyed from loading, test piece deformation is changing always, inventor is disclosed stationary installation formerly, due to two armed levers of sensor installation, by initial parastate, uneven " eight sons " state can be changed to, the validity causing sensor side planar central to be coupled with test specimen center reduces, and affects test accuracy.Sensor of the present utility model is arranged on the locating device framework of integral rigidity loop configuration by mount pad, installing mechanism, in test piece deformation process, the sliding bar be fixedly connected with sensor is as retractable in the guide cylinder of erection support, owing to being nested with the spring action outside sliding bar, testing sensor and test specimen are in optimum coupling state all the time, overcome the above-mentioned defect that prior art stationary installation exists.Stationary installation of the present utility model also has the advantage (except any adjustment of universal type) of inventor's formerly disclosed stationary installation concurrently.
The damage of rock test acoustic emission test sensor assembly type locating device using the utility model to provide carries out testing experiment to test specimen, can ensure that acoustic emission test sensor transverse plane central shaft is to by test specimen diameter or test specimen center, sensor side plane and test specimen cylinder coupling part are always sensor side planar central, and 4 sensors on same cross section are all the time at phase co-altitude, overcome artificial install in test specimen process can not ensure acoustic emission test sensor planar central and the face of cylinder tangent, and acoustic emission test sensor transverse plane central shaft is to the difficult problem do not overlapped with tested cylinder specimen diameter.Meanwhile, the utility model also can guarantee that two acoustic emission test sensor transverse planes are parallel all the time, and axially overlaps completely.
The damage of rock test acoustic emission test sensor assembly type locating device that the utility model provides, device frame due to locating device assembles all-in-one-piece locating device framework by the ring block of two pieces of semicircles or rectangle by positioning and fixing structure, it is a kind of detachable locating device framework, therefore acoustic emission test sensor can be installed before test specimen is installed on testing machine and after installing, can different installation be taked for difference test test specimen, improve the test convenience of testing equipment.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of the utility model embodiment.
Fig. 2 is the main TV structure schematic diagram of stationary installation shown in Fig. 1.
Fig. 3 is that the master of stationary installation shown in Fig. 1 looks sectional structure schematic diagram.
Fig. 4 is the plan structure schematic diagram of the utility model embodiment.
Fig. 5-1 is sensor installation seat and sliding bar connecting relation structural representation.
Fig. 5-2 is plan structure schematic diagram of Fig. 5-1.
Fig. 6 is a kind of fixed form structural representation that sensor is fixed on mount pad.
Fig. 7 is the another kind of fixed form structural representation that sensor is fixed on mount pad.
Fig. 8-1, Fig. 8-2 and Fig. 8-3 is the positioning and fixing structure schematic diagram in stationary installation, and wherein Fig. 8-1 is the fragmentary top TV structure schematic diagram of stationary installation, and Fig. 8-2 is right TV structure formula schematic diagram of Fig. 8-1, Fig. 8-3 be Fig. 8-1 face structural formula schematic diagram.
Fig. 9-1, Fig. 9-2 are the positioning and fixing structure schematic diagram in stationary installation, and wherein Fig. 9-1 is the fragmentary top TV structure schematic diagram of stationary installation, Fig. 9-2 be Fig. 9-1 face structural formula schematic diagram.
Figure 10-1, Figure 10-2 are the positioning and fixing structure schematic diagram in stationary installation, and wherein Figure 10-1 is the fragmentary top TV structure schematic diagram of stationary installation, Figure 10-2 be in Figure 10-1 1 partial enlargement cut open assembling TV structure formula schematic diagram.
Figure 11-1, Figure 11-2 are the positioning and fixing structure schematic diagram in stationary installation, wherein Figure 11-1 is the fragmentary top TV structure schematic diagram of stationary installation, Figure 11-2 be in Figure 11-1 11 partial enlargement analyse and observe assembly structure formula schematic diagram, Figure 11-3 is right TV structure schematic diagram of Figure 11-1.
Figure 12-1, Figure 12-2 are the positioning and fixing structure schematic diagram in stationary installation, and wherein Figure 12-1 is the fragmentary top TV structure schematic diagram of stationary installation, and Figure 12-2 is that the A-A of Figure 12-1 is to analysing and observe partial enlargement structural formula schematic diagram.
Figure 13-1, Figure 13-2 are the positioning and fixing structure schematic diagram in stationary installation, and wherein Figure 13-1 is the fragmentary top TV structure schematic diagram of stationary installation, and Figure 13-2 is that the B-B of Figure 13-1 is to analysing and observe partial enlargement structural formula schematic diagram.
Figure 14-1, Figure 14-2 are the positioning and fixing structure schematic diagram in stationary installation, and wherein Figure 14-1 is the fragmentary top TV structure schematic diagram of stationary installation, and Figure 14-2 is right TV structure schematic diagram of Figure 14-1.
The each shown by reference numeral identification of object of above-mentioned accompanying drawing is respectively: 1-locating device framework; 2-erection support; 3-sliding bar; 4-stop nut; 5-spring; 6-sensor installation seat; 7-open annular spring leaf; 8-buckle; The wiring of 9-sensor; The outer approaching channel of 10-sensor wiring; 11-acoustic emission test sensor; 12-test specimen, 13-clamping screw; 14-first connects journal stirrup, 15-second connects journal stirrup; 16-seam; 17-pin; 18-turns round type card; 19-centring hole; 20-connecting thread hole; 21-socket joint groove; 22-socket joint head; The spacing seam of 23-first; The spacing seam of 24-second; 25-Part I frame body; 26--Part II frame body.
Embodiment
By the following examples and by reference to the accompanying drawings damage of rock test acoustic emission test sensor assembly type locating device described in the utility model is described further, it is important to note that embodiment of the present utility model is not limited to the form described by embodiment.
Embodiment 1
The damage of rock test acoustic emission test sensor assembly type locating device of the present embodiment, its structure as accompanying drawing 1,2,3,5-1,5-2,6,7, shown in 8-1,8-2 and 8-3, test block is cylindrical rock sample, the formation of locating device comprise by two pieces of semicircular circular frame body by positioning and fixing structure assemble all-in-one-piece locating device framework 1, for install acoustic emission test sensor 11 mount pad 6, acoustic emission test sensor is fixed on the fixation kit in mount pad 6 and mount pad 6 is installed on the installing mechanism on locating device framework.Described positioning and fixing structure is as Fig. 8-1, shown in Fig. 8-2 and Fig. 8-3, it forms the first connection journal stirrup 14 comprising and be positioned at two ring block craft port places and arrange, second connects journal stirrup 15, arrange in ring block craft port place containing the seam 16 connecing another ring block craft port, be positioned on the second connection journal stirrup 15 and be designed with pin-and-hole, be positioned at the pin 17 that the first connection journal stirrup 14 matches with described pin-and-hole, type of the turning round card 18 that two are connected journal stirrup and are fixedly connected, by turning round type card, the engaging lug on two semicircle ring blocks is fixed together, two semicircular ring blocks are made to be assembled into the stationary installation framework of loop configuration.By the socket joint groove 21 processed at a ring block port and the socket joint butt junction location structure that forms at the socket joint head 22 that another ring block port processes secondary and the set bolt that socket joint groove 21 and socket joint head are fixed together is formed.Described mount pad be inner chamber and acoustic emission test sensor outer rim match one end close cylindrical shell, barrel wall is designed with sensor wiring draw breach, Notch angle is 90 degree, acoustic emission test sensor is fixed on the described fixation kit in mount pad 6, form by the open annular spring leaf 7 put by acoustic emission test sensor hoop on mount pad with by the locking mechanism that open annular spring leaf opening is locked, described locking mechanism is buckle 8 locking mechanism, described installing mechanism be can automatic axial adjustment mount pad position installing mechanism, comprise the sliding bar 3 be fixedly connected with the cylindrical shell bottom as acoustic emission test sensor mount pad 6, be nested with outside sliding bar, one end acts on cylindrical shell bottom, the spring 5 that the other end acts on locating device frame inner wall and the erection support 2 be fixedly installed in locating device framework outside wall surface, described erection support is guide cylinder bearing, be fixed on outside locating device framework wall by screw thread pair at right angle setting, the major diameter fit of its internal diameter and sliding bar forms the pair that slides axially, sliding bar can be arranged in the guide cylinder as erection support through the mounting hole on locating device framework axially slidably, stretch in outside sliding bar and the body of rod outside erection support guide cylinder is designed with limit slippage bar and slides axially position limiting structure, described position limiting structure is made up of the screw thread on sliding bar and stop nut with matching 4, to slide axially position for limit slippage bar.Installing mechanism has fourth officer, is positioned at the same cutting plane of locating device framework, arranges in opposite directions between two, and two installation site lines that installing mechanism arranges formation between two are in opposite directions mutually vertical.
The form of described positioning and fixing structure also can be designed to:
1, the structure of described positioning and fixing structure is as shown in Fig. 9-1, Fig. 9-2, the place different from the positioning and fixing structure in above-described embodiment 1 is, forming the fixed structure piece of positioning and fixing structure is that thread connection is secondary, by the mounting hole be positioned on the second connection journal stirrup 15, is positioned at threaded hole 20 on the first connection journal stirrup 14 and coupling bolt 13 is formed.
2, the structure of described positioning and fixing structure is as shown in Figure 10-1, Figure 10-2, by the socket joint groove 21 processed at a ring block port and the socket joint butt junction location structure that forms at the socket joint head 22 that another ring block port processes secondary and the set bolt that socket joint groove 21 and socket joint head are fixed together is formed.
3, the structure of described positioning and fixing structure is as shown in Figure 11-1, Figure 11-2, it is formed by the socket joint groove 21 processed at a ring block port and the socket joint butt junction location structure pair formed at the socket joint head 22 that another ring block port processes, and is formed by the locking buckle 8 that socket joint groove 21 and socket joint head 22 are fixed together.
4, the structure of described positioning and fixing structure is as shown in Figure 12-1, Figure 12-2, its form by the process at a ring block port first spacing seam 23 and the docking fixing structure that forms at the second spacing seam 24 that another ring block port processes secondary, form with the clamping screw 13 that the first spacing seam 23 and the second spacing seam 24 that form docking fixing structure pair are fixed together, described clamping screw 13 has three, is positioned on straight line.
5, the structure of described positioning and fixing structure is as shown in Figure 13-1, Figure 13-2, its formation is substantially identical with the positioning and fixing structure in above-mentioned 4, difference place is that described clamping screw 13 has two, be positioned on straight line, between two clamping screws, be provided with the positioning pin column 17 of the spacing seam in location first 23 and the second spacing seam 24.
6, the structure of described positioning and fixing structure is as shown in Figure 14-1, Figure 14-2, and its formation is substantially identical with the positioning and fixing structure in above-mentioned 5, and difference is fixed structure piece is buckle 8, and positioning pin column 17 and two bayonet sockets are not point-blank.
The using method that the damage of rock test acoustic emission test sensor assembly type locating device adopting the utility model to provide is tested rock sample:
1, according to the diameter (or length of side) of tested rock sample, and the diameter of tested rock sample and destroy time contingent deflection, select suitable spring 5 length.4 acoustic emission test sensors 11 are fixedly mounted on respectively in stationary installation as in the cylindrical shell of mount pad.Adjustment installing mechanism sliding bar upper limit nut, make the spring 5 be nested with on installing mechanism sliding bar 3, in the whole process of the test of rock sample, be in compressive state all the time, guarantee that acoustic emission test sensor transverse plane center effectively contacts with tested rock sample surface.Regulate the installing mechanism that it should be noted that the difference fixed sound transmission test sensor installation seat making to be oppositely arranged during stop nut 4, the spring on sliding bar should be identical by decrement.In addition, when the acoustic emission test sensor after regulating stop nut 4 position is placed on test specimen, stop nut 4 should be between the free end of sliding screw 3 and the guide cylinder free end as erection support 2, and the free end of guide cylinder can not be close to, such setting is in order to ensure in rock sample deformation process, when rock occurs laterally to reduce, namely when rock diameter (or length of side) reduces, two acoustic emission test sensors be oppositely arranged, energy move toward one another under spring force effect; When rock laterally increases, namely rock diameter (or length of side) increases, two acoustic emission test sensors be oppositely arranged, and under rock deformation effect, Compress Spring, occurs to deviate from motion mutually.
2, the acoustic emission test sensor lead-in wire regulating Distance geometry stop nut position is individually fixed in the outer approaching channel 10 of acoustic emission test sensor wiring that this sensor closes on.
3, according to test situation, other testing sensors are installed, then acoustic emission test sensor are fixedly mounted on test specimen near end.
4, the test specimen installing acoustic emission test sensor is placed on testing machine tests.
After installing according to the method described above, in test during test specimen lateral expansion, distance between the testing sensor transverse plane that then in this device, two are oppositely arranged can rely on spring 5 that trace change occurs, and be close to test surface of test piece, and remain initial parastate mutually, ensure accuracy and the authenticity of measuring-signal.
Embodiment 2
The damage of rock test acoustic emission test sensor assembly type locating device of the present embodiment, its structure is as shown in accompanying drawing 4 and 7, and test block is rectangle rock sample.The locating device of the present embodiment, its structure is substantially identical with the structure of locating device described in embodiment 1, difference is local, and one is that locating device framework described in the present embodiment is for assembling all-in-one-piece rectangular ring locating device framework by Part I frame body 25 and Part II frame body 26 by positioning and fixing structure; Two is the described fixation kits be fixed on by acoustic emission test sensor in mount pad 6, and the locking mechanism of wherein being locked by open annular spring leaf 7 opening is bolt and nut locking mechanism.
Claims (10)
1. a damage of rock test acoustic emission test sensor assembly type locating device, the installing mechanism comprising locating device framework (1), install the mount pad (6) of acoustic emission test sensor (11), acoustic emission test sensor be fixed on the fixation kit in mount pad and mount pad be installed on locating device framework, it is characterized in that: described locating device framework is package assembly annular frame, be assembled into an integral ring-shaped framework by 2 ~ 4 pieces of ring blocks by positioning and fixing structure; Described mount pad is the tube structure that inner chamber and acoustic emission test sensor outer rim match, and barrel wall is designed with sensor wiring and draws breach; Described installing mechanism be can automatic axial adjustment mount pad position installing mechanism, total fourth officer, be positioned at the same cutting plane of locating device framework, arrange in opposite directions between two, article two, installation site line is mutually vertical, makes the line of two the sensor side planar central be oppositely arranged be installed on locating device framework by mount pad, erecting frame by test specimen diameter or test specimen kernel of section.
2. damage of rock test acoustic emission test sensor assembly type locating device according to claim 1, is characterized in that: described locating device framework is split ring block by 2 pieces and is assembled into an integral ring-shaped framework by positioning and fixing structure.
3. damage of rock test acoustic emission test sensor assembly type locating device according to claim 2, is characterized in that: described positioning and fixing structure is included in the location docking structure pair that two ring block craft port places are formed and the fixed structure piece be fixed together by two ring blocks.
4. damage of rock test acoustic emission test sensor assembly type locating device according to claim 3, is characterized in that: the integral ring-shaped framework of described assembling is annular framework or straight-flanked ring framework.
5. damage of rock test acoustic emission test sensor assembly type locating device according to claim 1, it is characterized in that: as the described cylindrical shell of mount pad, the Notch angle of cylindrical shell is not more than 120 degree.
6. damage of rock test acoustic emission test sensor assembly type locating device according to claim 1, is characterized in that: described fixation kit is formed by the open annular spring leaf (7) put by acoustic emission test sensor hoop on mount pad with by the locking mechanism (8) that open annular spring leaf opening is locked.
7. damage of rock test acoustic emission test sensor assembly type locating device according to claim 6, is characterized in that: described locking mechanism is snap lock structure or bolt and nut locking mechanism.
8. according to the acoustic emission test sensor assembly type locating device of the damage of rock test one of claim 1 to 7 Suo Shu, it is characterized in that: described installing mechanism comprises the sliding bar (3) be fixedly connected with mount pad (6), be nested with outside sliding bar, one end acts on mount pad, the spring (5) that the other end acts on locating device frame inner wall and the bearing (2) be fixedly installed in locating device framework outside wall surface, described bearing is guide cylinder structural bearings, be fixedly installed perpendicular to locating device framework outside wall surface, the major diameter fit of internal diameter and sliding bar forms sliding pair, sliding bar can be arranged in the guide cylinder as bearing through the mounting hole on locating device framework axially slidably, stretch in outside sliding bar and the body of rod outside guide cylinder is designed with limit slippage bar and slides axially position limiting structure.
9. damage of rock test acoustic emission test sensor assembly type locating device according to claim 8, it is characterized in that: limit slippage bar in axial sliding position limiting structure is the bolt and nut position limiting structure be made up of the screw thread on sliding bar and the nut that matches with it, or the pin-and-hole pin position limiting structure be made up of the pin-and-hole on sliding bar and the pin that matches with it.
10. according to the acoustic emission test sensor assembly type locating device of the damage of rock test one of claim 1 to 7 Suo Shu, it is characterized in that: locating device framework is designed with the outer approaching channel hole (10) of acoustic emission test sensor wiring.
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| CN201520092730.9U CN204389448U (en) | 2015-02-09 | 2015-02-09 | Damage of rock test acoustic emission test sensor assembly type locating device |
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| CN201520092730.9U CN204389448U (en) | 2015-02-09 | 2015-02-09 | Damage of rock test acoustic emission test sensor assembly type locating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764810A (en) * | 2015-02-09 | 2015-07-08 | 四川大学 | Assembled acoustic emission testing sensor positioning device used for rock damage test |
| CN109283257A (en) * | 2018-11-29 | 2019-01-29 | 四川大学 | The test macro of temporal-spatial evolution is destroyed under rock deep ground complex environment |
| CN112665979A (en) * | 2020-12-15 | 2021-04-16 | 青岛理工大学 | Acoustic emission sensor fixing and sealing device for rock compression test and using method thereof |
-
2015
- 2015-02-09 CN CN201520092730.9U patent/CN204389448U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764810A (en) * | 2015-02-09 | 2015-07-08 | 四川大学 | Assembled acoustic emission testing sensor positioning device used for rock damage test |
| CN109283257A (en) * | 2018-11-29 | 2019-01-29 | 四川大学 | The test macro of temporal-spatial evolution is destroyed under rock deep ground complex environment |
| CN109283257B (en) * | 2018-11-29 | 2023-10-20 | 四川大学 | Test system for destroying space-time evolution under rock deep complex environment |
| CN112665979A (en) * | 2020-12-15 | 2021-04-16 | 青岛理工大学 | Acoustic emission sensor fixing and sealing device for rock compression test and using method thereof |
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