CN212110903U - Rock shear strength testing arrangement - Google Patents
Rock shear strength testing arrangement Download PDFInfo
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- CN212110903U CN212110903U CN201922481371.7U CN201922481371U CN212110903U CN 212110903 U CN212110903 U CN 212110903U CN 201922481371 U CN201922481371 U CN 201922481371U CN 212110903 U CN212110903 U CN 212110903U
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- shear strength
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Abstract
The utility model discloses a rock shear strength testing device, which comprises a longitudinal pressure device and a horizontal pressure device, wherein 2 rock fixing boxes which are symmetrical up and down are arranged below the longitudinal pressure device, and the horizontal pressure device corresponds to the side surface of the rock fixing box above the longitudinal pressure device; the fixed box of rock is relative inboard open-ended square box, and the middle part in the fixed box of rock is equipped with the limiting plate, vertically runs through on the limiting plate to have a plurality of square support columns, and square support column is the matrix arrangement on the limiting plate, is equipped with fore-and-aft screw hole in the square support column to with the screw thread post threaded connection of one end, after the one end of screw thread post stretched out the bottom of the fixed box of rock, rotate with the bottom of the fixed box of rock and be connected. The utility model has the characteristics of simple structure, low cost, firm rock fixation and difficult failure of experiment; in addition, the method also has the characteristic of accurate experimental results.
Description
Technical Field
The utility model relates to a rock shear strength testing arrangement, especially a rock shear strength testing arrangement.
Background
The rock shear strength testing device is a testing instrument for measuring the rock shear strength, and mainly comprises an upper rock fixing device and a lower rock fixing device, wherein the lower rock fixing device is fixed on an operation table, after the rock is installed in place, longitudinally fixed pressure is applied above the upper rock fixing device, transverse thrust is applied to the side surface, and the relationship between the transverse thrust and the slippage of a rock structural plane is observed.
The main problems of the existing rock shear strength testing device are as follows: although professional equipment has high measurement accuracy, the structure is complex, the cost is high, and experiments which are not required by some non-precise measurement are unnecessary; some existing self-made experimental instruments are troublesome to operate, most importantly, the appearance of the rock sample is odd, the rock sample is very difficult to fix, and the problems of falling, overturning, shifting and the like easily occur in the experimental process, so that the experiment fails.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rock shear strength testing arrangement. The utility model has the characteristics of simple structure, low cost, firm rock fixation and difficult failure of experiment; in addition, the method also has the characteristic of accurate experimental results.
The technical scheme of the utility model: a rock shear strength testing device comprises a longitudinal pressure device and a horizontal pressure device, wherein 2 rock fixing boxes which are symmetrical up and down are arranged below the longitudinal pressure device, and the horizontal pressure device corresponds to the side surface of the upper rock fixing box; the fixed box of rock is relative inboard open-ended square box, and the middle part in the fixed box of rock is equipped with the limiting plate, vertically runs through on the limiting plate to have a plurality of square support columns, and square support column is the matrix arrangement on the limiting plate, is equipped with fore-and-aft screw hole in the square support column to with the screw thread post threaded connection of one end, after the one end of screw thread post stretched out the bottom of the fixed box of rock, rotate with the bottom of the fixed box of rock and be connected.
According to the rock shear strength testing device, the rock fixing box is arranged on the operating platform, a fixing frame for fixing the rock fixing box is arranged on the operating platform, and a portal frame is arranged on one side above the operating platform; the longitudinal pressure device comprises a pressure plate arranged at the top end of the upper rock fixing box, the top end of the pressure plate is connected with an axial pressure rod, the top end of the axial pressure rod is connected with an axial telescopic cylinder, the axial telescopic cylinder is fixed on the portal frame, and a first pressure gauge is arranged on the axial pressure rod; the horizontal pressure device comprises a horizontal telescopic cylinder positioned on the side surface of the rock fixing box above, the horizontal telescopic cylinder is connected with a horizontal pressure rod, and a second pressure gauge is arranged on the horizontal pressure rod.
According to the rock shear strength testing device, the bottom of the pressing plate is provided with the plurality of rotating rollers in parallel along the horizontal direction to the telescopic direction of the pressing rod, and the plane where the lower ends of the rotating rollers are located is lower than the lower end face of the pressing plate.
According to the rock shear strength testing device, the rotating roller is arranged in the annular belt.
Aforementioned rock shear strength testing arrangement, the bottom of screw thread post is equipped with a word groove, is connected with the spacing piece of iron through the pivot behind the side fluting in a word groove, and the one end of the spacing piece of iron is located a word inslot, and one end is located the side of screw thread post, and the bottom of the fixed box of rock is equipped with a plurality of spacing recesses along the circumference of screw thread post, and the bottom of spacing recess is equipped with magnet.
According to the rock shear strength testing device, the rubber buffer layer is arranged at the top end of the square supporting column.
The beneficial effects of the utility model
The utility model belongs to a self-made instrument, the structure is simple relatively, and the cost is lower relatively, is fit for promoting in the teaching experiment. The utility model designs a fixing structure similar to type printing by improving the structure of the rock fixing box, can be changed according to the shape of the rock surface, so that the rock sample fixing effect is better, and the rock sample is not easy to fall off, turn over and shift in the experimental process, the experiment is smoother and is not easy to fail; meanwhile, the rubber buffer layer is arranged at the top end of the square supporting column in contact with the rock sample, so that the rock surface is prevented from being subjected to brittle fracture in the experiment process, and the accuracy of the experiment result is improved; in addition, through set up stop device in the bottom of screw thread post, avoided square support column to make the screw thread post rotate at vertical or side direction atress in-process and lead to the problem that the firmness descends, it is fixed more firm. In addition, the rotating roller is arranged below the pressing plate, so that after the rotating roller is contacted with the soil sample, when the soil sample slides transversely, the friction force between the pressing plate and the soil sample can be greatly reduced, and the accuracy of an experimental result is further improved; meanwhile, the annular belt is arranged outside the rotating roller, so that the contact surface of the pressing plate and the soil sample is larger, the longitudinal pressing is more uniform, and the experiment effect is better.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a perspective view of a rock retaining box;
FIG. 3 is a schematic plan view of the rock retaining box;
FIG. 4 is an enlarged view of area d of FIG. 3;
FIG. 5 is a bottom view of the portion of FIG. 4;
FIG. 6 is a diagram showing a state of use of the rock fixing box;
fig. 7 is a schematic structural view of the pressing plate.
Description of reference numerals: the method comprises the following steps of 1-an operation table, 2-a portal frame, 3-a rock fixing box, 4-a pressing plate, 5-an axial compression bar, 6-an axial telescopic cylinder, 7-a first pressure gauge, 8-a horizontal telescopic cylinder, 9-a horizontal compression bar, 10-a second pressure gauge, 11-a fixing frame, 12-a limiting plate, 13-a square supporting column, 14-a threaded column, 15-a straight groove, 16-a rotating shaft, 17-an iron limiting plate, 18-a limiting groove, 19-a magnet, 20-a rotating roller, 21-an annular belt and 22-a rubber buffer layer.
Detailed Description
The present invention will be further described with reference to the following examples, which are not intended as a limitation of the present invention.
Embodiments of the utility model
A rock shear strength testing device is shown in figures 1-7 and comprises a longitudinal pressure device and a horizontal pressure device, wherein 2 rock fixing boxes 3 which are symmetrical up and down are arranged below the longitudinal pressure device, and the horizontal pressure device corresponds to the side surface of the upper rock fixing box 3; the rock fixing box 3 is a square box with an opening at the opposite inner side, a limiting plate 12 is arranged in the middle of the interior of the rock fixing box 3, a plurality of square supporting columns 13 longitudinally penetrate through the limiting plate 12, the square supporting columns 13 are arranged on the limiting plate 12 in a matrix manner, longitudinal threaded holes are formed in the square supporting columns 13 and are in threaded connection with a threaded column 14 at one end, and one end of the threaded column 14 extends out of the bottom of the rock fixing box 3 and then is rotatably connected with the bottom of the rock fixing box 3; preferably, the rock fixing box 3 is arranged on the operating platform 1, a fixing frame 11 for fixing the rock fixing box 3 is arranged on the operating platform 1, and a portal frame 2 is arranged on one side above the operating platform 1; the longitudinal pressure device comprises a pressure plate 4 arranged at the top end of the rock fixing box 3 above, the top end of the pressure plate 4 is connected with an axial pressure rod 5, the top end of the axial pressure rod 5 is connected with an axial telescopic cylinder 6, the axial telescopic cylinder 6 is fixed on the portal frame 2, and a first pressure gauge 7 is arranged on the axial pressure rod 5; the horizontal pressure device comprises a horizontal telescopic cylinder 8 which is positioned on the side surface of the rock fixing box 3 above, the horizontal telescopic cylinder 8 is connected with a horizontal pressure rod 9, and a second pressure gauge 10 is arranged on the horizontal pressure rod 9.
When the device works, firstly, the rock fixing box 3 is taken down, the threaded columns 14 are rotated to withdraw the square supporting columns 13 into the rock fixing box 3, then a rock sample is put into the rock fixing box 3, the rock fixing boxes 3 on the upper side and the lower side are folded to fixed positions, then the threaded columns 14 are kept still, each threaded column 14 of the rock fixing boxes 3 on the upper side and the lower side are sequentially rotated to ensure that the top ends of the square supporting columns 13 are just contacted with the surface of the corresponding position of the rock sample, so that the surface shape formed by the end faces of all the square supporting columns 13 is consistent with the surface shape of the rock sample, the rock sample is completely wrapped and fixed, after the rock sample is installed in place, the rock fixing box 3 on the lower end is fixed in the fixing frame 11 and cannot move in the horizontal direction, then the rock fixing box 3 on the upper end is covered, the axial telescopic cylinder 6 is, make clamp plate 4 press on the fixed box of rock 3 of upper end, observe through first pressure gauge 7 and reach the set pressure after, start the level to telescoping cylinder 8, through the level to the fixed box of rock 3 lateral shifting of depression bar 9 promotion upper end to read transverse thrust through second pressure gauge 10 can.
Preferably, a plurality of rotating rollers 20 are arranged in parallel at the bottom of the pressing plate 4 along the extending and retracting direction of the horizontal pressing rod 9, the plane of the lower ends of the rotating rollers 20 is lower than the lower end face of the pressing plate 4, when the pressing plate 4 is contacted with the rock fixing box 3 above, the rotating rollers 20 are contacted, and the rotating rollers 20 rotate to reduce the friction force between the rock fixing box 3 and the rock fixing box 3 in the process of transverse movement of the rock fixing box 3.
Preferably, the rotating roller 20 is arranged in the annular belt 21, and the annular belt 21 is in contact with the rock fixing box 3 during the experiment, so that the contact area is increased.
Preferably, a straight groove 15 is formed in the bottom end of the threaded column 14, an iron limiting piece 17 is connected to the side face of the straight groove 15 through a rotating shaft 16 after the groove is formed in the side face of the straight groove 15, one end of the iron limiting piece 17 is located in the straight groove 15, the other end of the iron limiting piece is located on the side face of the threaded column 14, a plurality of limiting grooves 18 are formed in the bottom of the rock fixing box 3 along the circumference of the threaded column 14, and magnets 19 are arranged at the bottoms of the limiting grooves 18. When the threaded column 14 needs to be rotated, the screwdriver is inserted into the straight-line groove 15, one end, extending into the straight-line groove 15, of the iron limiting piece 17 moves downwards under the extrusion of the screwdriver, the other side of the iron limiting piece tilts and is separated from the limiting groove 18, the threaded column 14 can rotate at the moment, after the iron limiting piece is rotated to a position, the screwdriver is taken out, under the action of the magnet 19, one end, close to the limiting groove 18, of the iron limiting piece 17 is turned over and is clamped into the limiting groove 18, the threaded column 14 is fixed and cannot rotate, and therefore the limiting purpose of the threaded column 14 is achieved.
Preferably, the top end of the square supporting column 13 is provided with the rubber buffer layer 22, when the square supporting column 13 is in contact with a rock sample, the rubber buffer layer 22 is in contact with the surface of the rock sample, so that the friction force is larger, the firmness is higher, the flexible contact is realized, and the contact surface between the rock and the square supporting column 13 cannot be subjected to brittle fracture in the experimental process.
The above, only do the utility model discloses create the embodiment of preferred, nevertheless the utility model discloses the protection scope of creation is not limited to this, and any technical personnel who is familiar with this technical field are in the utility model discloses create the technical scope of disclosure, according to the utility model discloses technical scheme and the utility model design that creates of the utility model are equivalent replacement or change, all should be covered within the protection scope of creation of the utility model.
Claims (6)
1. The utility model provides a rock shear strength testing arrangement which characterized in that: the device comprises a longitudinal pressure device and a horizontal pressure device, wherein 2 rock fixing boxes (3) which are symmetrical up and down are arranged below the longitudinal pressure device, and the horizontal pressure device corresponds to the side surface of the upper rock fixing box (3); the fixed box of rock (3) is the square box of relative inboard open-ended, and middle part in the fixed box of rock (3) is equipped with limiting plate (12), and it has a plurality of square support columns (13) to vertically run through on limiting plate (12), and square support column (13) are the matrix arrangement on limiting plate (12), is equipped with fore-and-aft screw hole in square support column (13) to with the screw thread post (14) threaded connection of one end, behind the bottom of the fixed box of rock (3) was stretched out to the one end of screw thread post (14), rotate with the bottom of the fixed box of rock (3) and be connected.
2. The apparatus for testing shear strength of rock according to claim 1, wherein: the rock fixing box (3) is arranged on the operating platform (1), a fixing frame (11) for fixing the rock fixing box (3) is arranged on the operating platform (1), and a portal frame (2) is arranged on one side above the operating platform (1); the longitudinal pressure device comprises a pressure plate (4) arranged at the top end of the rock fixing box (3) above the longitudinal pressure device, the top end of the pressure plate (4) is connected with an axial pressure rod (5), the top end of the axial pressure rod (5) is connected with an axial telescopic cylinder (6), the axial telescopic cylinder (6) is fixed on the portal frame (2), and a first pressure gauge (7) is arranged on the axial pressure rod (5); the horizontal pressure device comprises a horizontal telescopic cylinder (8) which is positioned on the side surface of the rock fixing box (3) above, the horizontal telescopic cylinder (8) is connected with a horizontal pressure rod (9), and a second pressure gauge (10) is arranged on the horizontal pressure rod (9).
3. The apparatus for testing shear strength of rock according to claim 2, wherein: the bottom of the pressing plate (4) is provided with a plurality of rotating rollers (20) in parallel along the horizontal direction of the compression rod (9), and the plane of the lower ends of the rotating rollers (20) is lower than the lower end face of the pressing plate (4).
4. The apparatus for testing shear strength of rock according to claim 3, wherein: the rotating roller (20) is arranged in the annular belt (21).
5. The apparatus for testing shear strength of rock according to claim 1, wherein: the bottom of screw thread post (14) is equipped with a word groove (15), is connected with iron spacing piece (17) through pivot (16) behind the side fluting of a word groove (15), and the one end of iron spacing piece (17) is located a word groove (15), and one end is located the side of screw thread post (14), and the bottom of the fixed box of rock (3) is equipped with a plurality of spacing recesses (18) along the circumference of screw thread post (14), and the bottom of spacing recess (18) is equipped with magnet (19).
6. The apparatus for testing shear strength of rock according to claim 1, wherein: and a rubber buffer layer (22) is arranged at the top end of the square supporting column (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922481371.7U CN212110903U (en) | 2019-12-31 | 2019-12-31 | Rock shear strength testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922481371.7U CN212110903U (en) | 2019-12-31 | 2019-12-31 | Rock shear strength testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212110903U true CN212110903U (en) | 2020-12-08 |
Family
ID=73624474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922481371.7U Expired - Fee Related CN212110903U (en) | 2019-12-31 | 2019-12-31 | Rock shear strength testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212110903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907268A (en) * | 2019-12-31 | 2020-03-24 | 贵州理工学院 | Rock shear strength tester |
| CN113109173A (en) * | 2021-03-01 | 2021-07-13 | 绍兴文理学院 | Test device for testing shear strength of frost heaving of rock ice-containing fracture |
-
2019
- 2019-12-31 CN CN201922481371.7U patent/CN212110903U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907268A (en) * | 2019-12-31 | 2020-03-24 | 贵州理工学院 | Rock shear strength tester |
| CN110907268B (en) * | 2019-12-31 | 2024-09-24 | 贵州理工学院 | Rock shear strength tester |
| CN113109173A (en) * | 2021-03-01 | 2021-07-13 | 绍兴文理学院 | Test device for testing shear strength of frost heaving of rock ice-containing fracture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201208 Termination date: 20211231 |