CN204495777U - For the acoustic emission probe fixed mechanism of sillar Experiments of Machanics - Google Patents

Abstract

The utility model relates to a kind of acoustic emission probe fixed mechanism for sillar Experiments of Machanics, comprise rubber ring, fixed block and movable block, fixed block and movable block are equipped with the groove adapted with acoustic emission probe cylindrical, fixed block is fixed on rubber ring, rubber ring is provided with draw-in groove, movable block is located in draw-in groove and also can moves along draw-in groove or be fixed on draw-in groove, fixed block and movable block are all located at outside rubber ring, the rubber ring center of circle is pointed in described depth of groove direction, and fixed block and movable block are also provided with open slot; During work, rubber ring sleeve is on sillar, and acoustic emission probe is fixing in a groove, and the sense line of acoustic emission probe is arranged in open slot.Accurately and can not produce stress and concentrate, can adjust the distributing position of acoustic emission probe easily and take measurement of an angle, easy to operate, structure is simple in this mechanism fixed position.

Description

Acoustic emission probe fixing mechanism for rock mechanics experiment

technical field

The utility model relates to a fixing mechanism, in particular to an acoustic emission probe fixing mechanism used in rock block mechanics experiments.

Background technique

During the failure process of rock mass, strain energy is released in the form of elastic waves. Monitoring the acoustic emission characteristics during the failure process of rock mass has become a new angle for studying rock mass failure. By analyzing the acoustic emission characteristics of the rock mass, the change of the internal structure state of the rock mass can be judged, and the stability state of the rock mass engineering can be predicted. Therefore, during some rock mechanics experiments, researchers will monitor the acoustic emission characteristics of the entire process. The current fixing method is to use the rubber ring to directly fix the acoustic emission probe on the rock block. This fixing method has the following disadvantages: 1. The fixing position is not accurate and easy to shift; 2. There is stress concentration at the contact point between the acoustic emission probe and the rubber ring ; 3. The adjustment of the distribution position and measurement angle of the acoustic emission probes cannot be realized.

Utility model content

In view of the existing technical problems, the purpose of this utility model is to provide a fixing mechanism for acoustic emission probes used in rock mechanics experiments. Adjust the distribution position of the acoustic emission probe.

In order to solve above-mentioned technical problem, the technical scheme that the utility model adopts is:

An acoustic emission probe fixing mechanism for rock mechanics experiments, including a rubber ring, a fixed block and a movable block, the fixed block and the movable block are provided with grooves compatible with the outer circle of the acoustic emission probe, and the fixed block is fixed on the On the rubber ring, there is a card slot on the rubber ring, and the movable block is arranged in the card slot and can move along the card slot or be fixed on the card slot. The fixed block and the movable block are both arranged on the outside of the rubber ring, and the depth direction of the groove Pointing to the center of the rubber ring, there are also open slots on the fixed block and the movable block; when working, the rubber ring is set on the rock block, the acoustic emission probe is fixed in the groove, and the sensing line of the acoustic emission probe is set in the open slot.

Two fixed blocks are fixed on the rubber ring, and the rubber ring is provided with two card slots, each of which is provided with a movable block, and the connecting line of the two fixed blocks passes through the center of the rubber ring, and the two The card slot is symmetrical about the connection line of the two fixed blocks, the upper ends of the two card slots and the two fixed blocks divide the rubber ring into quarters, and the lower ends of the two card slots and one of the fixed blocks divide the rubber ring into three equal parts; when working , two, three or four acoustic emission probes can be fixed symmetrically about the center of the rubber ring.

The bottom of the movable block is fixed with a rubber sheet, the rubber sheet is symmetrical about the movable block, the width of the rubber sheet is equal to the width of the movable block, the length of the rubber sheet is greater than the length of the movable block, and the cross section of the slot is small at the top and large at the bottom. In the shape of the boss, the width of the upper part of the slot is equal to the width of the rubber sheet, the width of the lower part of the slot is equal to the length of the rubber sheet, and the thickness of the rubber sheet is equal to the depth of the lower part of the slot.

The beneficial effects of the utility model are:

The grooves on the fixed block and the movable block can fix the acoustic emission probe without stress concentration, and the fixed position is precise; the movement of the movable block along the slot can easily adjust the distribution position and measurement angle of the acoustic emission probe.

Description of drawings

Fig. 1 is a top view of the utility model.

Fig. 2 is a front view of the utility model.

Fig. 3 is the front view of movable block in the utility model.

Fig. 4 is a side view of the movable block in the utility model.

Fig. 5 is a top view of the movable block in the utility model.

Fig. 6 is a schematic diagram of the movable block fixed on the slot in the utility model.

In the figure: 1-rubber ring; 2-fixed block; 3-movable block; 4-card slot; 5-groove; 6-open groove; 7 rubber sheet.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figures 1 and 2, an acoustic emission probe fixing mechanism for rock mechanics experiments includes a rubber ring 1, a fixed block 2 and a movable block 3, and the fixed block 2 and the movable block 3 are equipped with acoustic The groove 5 adapted to the outer circle of the transmitting probe, the fixed block 2 is fixed on the rubber ring 1, and the rubber ring 1 is provided with a slot 4, and the movable block 3 is arranged in the slot 4 and can move along the slot 4 or be fixed in the On the card slot 4, the fixed block 2 and the movable block 3 are all arranged on the outside of the rubber ring 1, and the depth direction of the groove 5 points to the center of the rubber ring 1, and the fixed block 2 and the movable block 3 are also provided with an opening groove 6; during work , the rubber ring 1 is set on the rock block, the acoustic emission probe is fixed in the groove 5, and the sensing line of the acoustic emission probe is arranged in the open groove 6.

When the utility model is working, first put the rubber ring 1 on the rock block (the rock block is in the shape of a cylinder), then adjust the position of the movable block 3 on the slot 4 as required, and finally fix the acoustic emission probe on the fixed block 2 and (or) the groove of the movable block 3, the sensing line of the acoustic emission probe is set in the opening groove 6 of the fixed block 2 and (or) the movable block 3; on the fixed block 2 and (or) the movable block 3 The acoustic emission probe is fixed in the groove 5, the acoustic emission probe is evenly stressed without stress concentration, and the fixed position is more precise; the movable block 3 can move along the card slot 4 to adjust the fixed position, thereby changing the distribution position and measurement angle of the emitting probe .

As shown in Figure 1, two fixed blocks 2 are fixed on the rubber ring 1, two draw-in slots 4 are arranged on the rubber ring 1, and each draw-in slot 4 is respectively provided with a movable block 3 and two fixed blocks. The connection line of 2 passes through the center of the rubber ring 1, and the two card slots 4 are symmetrical to the connection line of the two fixed blocks 2. The upper ends of the two card slots 4 and the two fixed blocks 2 divide the rubber ring 1 into four equal parts, and the two The lower end of the bar card slot 4 and one of the fixing blocks 2 divide the rubber ring 1 into three equal parts; during operation, two, three or four acoustic emission probes can be fixed symmetrically about the center of the rubber ring 1 .

In this embodiment, when it is necessary to fix two acoustic emission probes symmetrical to the center of the rubber ring 1, the acoustic emission probes can be respectively fixed on the two fixed blocks 2, or the two movable blocks 3 can be moved to the Fix the upper ends of the card slots 4 where they are respectively, and then fix the acoustic emission probes on the two movable blocks 3 respectively; Move to the lower end of the card slot 4 where they are located and fix them, and then fix the acoustic emission probes on the two movable blocks 3 and a corresponding fixed block 2 respectively; when it is necessary to fix four acoustic emission probes that are symmetrical about the center of the rubber ring 1 , first move the two movable blocks 3 to the upper ends of the respective slots 4 and fix them, and then fix the acoustic emission probes on the two fixed blocks 2 and the two movable blocks 3 respectively. By adjusting the position of the movable block 3, the measurement of different angles can be easily and conveniently completed.

As shown in Fig. 3 to Fig. 5, rubber sheet 7 is fixed on the bottom of described movable block 3, and rubber sheet 7 is symmetrical about movable block 3, and the width of rubber sheet 7 is equal to the width of movable block 3, and the length of rubber sheet 7 is greater than movable block. The length of the block 3, the cross section of the card slot 4 is in the shape of a boss with a small upper part and a larger lower part, the width of the upper part of the card slot 4 is equal to the width of the rubber sheet 7, the width of the lower part of the card slot 4 is equal to the length of the rubber sheet 7, and the rubber sheet The thickness of 7 is equal to the depth of draw-in groove 4 bottoms.

As shown in Figure 6, when the movable block 3 moves, the length direction of the rubber sheet 7 is the same as the extension direction of the slot 4, and the movable block 3 can move freely at this time, and when the movable block 3 needs to be fixed, it is only necessary to move the movable block 3. Rotate 90°. At this time, the length direction of the rubber sheet 7 is perpendicular to the extension direction of the card slot 4. The rubber sheet 7 cooperates with the lower part of the card slot 4. Under the action of the friction force and the contraction force of the rubber ring 1, the movable block 3 It is stuck inside the card slot 4.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

Claims (3)

1. the acoustic emission probe fixed mechanism for sillar Experiments of Machanics, it is characterized in that: comprise rubber ring, fixed block and movable block, fixed block and movable block are equipped with the groove adapted with acoustic emission probe cylindrical, fixed block is fixed on rubber ring, rubber ring is provided with draw-in groove, movable block is located in draw-in groove and also can moves along draw-in groove or be fixed on draw-in groove, fixed block and movable block are all located at outside rubber ring, the rubber ring center of circle is pointed in described depth of groove direction, and fixed block and movable block are also provided with open slot; During work, rubber ring sleeve is on sillar, and acoustic emission probe is fixing in a groove, and the sense line of acoustic emission probe is arranged in open slot.

2. as claimed in claim 1 for the acoustic emission probe fixed mechanism of sillar Experiments of Machanics, it is characterized in that: described rubber ring is fixed with two fixed blocks, rubber ring is provided with two clamp bar slots, every clamp bar slot is provided with a movable block, the line of two fixed blocks passes the center of circle of rubber ring, two clamp bar slots are symmetrical about the line of two fixed blocks, and the upper end of two draw-in grooves and two fixed blocks are by the rubber ring quartern, and the lower end of two clamp bar slots and one of them fixed block are by rubber ring trisection; During work, two, three or four acoustic emission probes can be fixed about rubber ring center of circle symmetry.

3. as claimed in claim 1 for the acoustic emission probe fixed mechanism of sillar Experiments of Machanics, it is characterized in that: the bottom of described movable block is fixed with sheet rubber, sheet rubber is symmetrical about movable block, the width of sheet rubber equals the width of movable block, the length of sheet rubber is greater than the length of movable block, described draw-in groove xsect is up-small and down-big boss shape, the width on draw-in groove top equals the width of sheet rubber, the width of draw-in groove bottom equals the length of sheet rubber, and the thickness of sheet rubber equals the degree of depth of draw-in groove bottom.