CN215985490U - Splitting mold for square block - Google Patents
Splitting mold for square block Download PDFInfo
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- CN215985490U CN215985490U CN202122234002.5U CN202122234002U CN215985490U CN 215985490 U CN215985490 U CN 215985490U CN 202122234002 U CN202122234002 U CN 202122234002U CN 215985490 U CN215985490 U CN 215985490U
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Abstract
The utility model belongs to the technical field of machinery, and particularly relates to a splitting mold for a square block, wherein a frame (1) is a rectangular frame body, and a base (8) is fixedly connected with a bottom cross beam of the frame (1); a lower splitting tool is fixed on the base 8; the loading part (2) penetrates through an upper cross beam of the frame (1) and can vertically apply pressure to the upper pressing block (3); the upper pressing block (3) acts pressure on the rock test block (6) through an upper splitting tool fixed at the bottom of the upper pressing block, so that the rock test block (6) is split under the combined action of the upper splitting tool and the lower splitting tool; the elastic components (5) are uniformly fixed between the upper part of the rock test block (6) and the upper pressing block (3). According to the utility model, by arranging the elastic part, the accurate centering of the splitting tool can be realized, so that the rock test block can be smoothly split under the combined action of the splitting tools arranged above and below the rock test block. And a tester does not need to hold the rock test piece by hands, so that the safety of the test is ensured.
Description
Technical Field
The utility model belongs to the technical field of machinery, and particularly relates to a splitting mold for a square block.
Background
Rock tensile strength refers to the ultimate stress value of a rock sample when the rock sample is damaged under the action of tensile force. The tensile strength of rock is much smaller than the compressive strength, so the tensile strength of rock is an indispensable important parameter in rock drilling, blasting, underground engineering and other aspects.
The existing methods for measuring the tensile strength of the rock comprise a direct method and an indirect method:
the direct method requires that the clamp does not damage the surface of the test piece during the test, and the applied load is strictly parallel to the axis of the test piece so as to avoid stress concentration caused by bending. The direct method tensile test has a great number of problems in methods such as test piece preparation, test technology and the like, so that the indirect tensile method is mostly adopted in the engineering world at home and abroad at present.
The indirect method is commonly used as a disc and cylinder radial fracturing method. The radial disc fracturing method is known as "baxie method", in which a solid disc is radially compressed and broken to obtain tensile strength. The cylinder radial fracturing method generally applies pressure to a cylinder at two contact points to obtain tensile strength. Among indirect tensile methods, the method with the highest acceptance, the most widely used and the simplest operation is the "split method" in which a cylindrical test piece is broken in the diameter direction by applying a pair of linear loads in the diameter direction of the test piece, thereby indirectly measuring the tensile strength of the rock.
In the highway engineering rock test regulation JTGE41-2005, the operation method of the splitting method is to divide two parallel loading base lines along the axial direction at the two ends of the diameter of the test piece, and fix two backing strips at the two ends of the test piece along the loading base lines. A steel wire with the diameter of 1mm is selected as a filler strip for hard and harder rocks, and a bakelite plate with the ratio of the width to the diameter of a test piece of 0.08-0.1 is selected as the filler strip for weak and softer rocks. The test piece is placed in the center of the pressure bearing plate of the testing machine, the ball seat is adjusted to enable the test piece to be evenly loaded, and the pad strip and the test piece are located on the same loading axis. Continuously and uniformly loading at the speed of 0.3 MPa/s-0.5 MPa/s until the test piece is broken. However, according to the above procedures, in the actual operation process, the pad strip is difficult to realize accurate centering on the workbench, and often one tester is required to hold the rock test piece by hand, and the other tester is required to operate the testing machine, so that not only can the test error be increased, but also certain safety risks exist in the experimental process.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model discloses a square block splitting die which can realize accurate centering of splitting tools on and under a rock test block, so that the rock test block can be smoothly split under the combined action of an upper splitting tool and a lower splitting tool.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a splitting mold for a square block, which comprises a die body.
The device comprises a frame, a loading part, an upper pressing block, a splitting tool, an elastic part, a rock test block and a base;
the frame is a rectangular frame body, and the base is fixedly connected with a bottom cross beam of the frame; a splitting tool is fixed on the base;
the loading part penetrates through the upper cross beam of the frame and can vertically apply pressure to the upper pressing block; the upper pressing block applies pressure on the rock test block through the splitting tool fixed at the bottom of the upper pressing block, so that the rock test block is split under the combined action of the splitting tool on the upper surface and the splitting tool on the lower surface of the rock test block;
a plurality of elastic components are uniformly fixed between the upper part of the rock test block and the upper pressing block.
More preferably, the plurality of elastic members are uniformly fixed between the bottom of the rock test block and the base.
More preferably, the elastic member includes: shims, springs, and studs; the two ends of the spring are fixedly connected to the gasket, and the gasket is fixed to the rock test block and the upper pressing block through the studs.
More preferably, the elastic member includes: shims, springs, and studs; the two ends of the spring are fixedly connected to the gasket, and the gasket is fixed on the rock test block and the base through the stud.
More preferably, sliding grooves are formed in two sides of the upper pressing block, and sliding sleeves are mounted on the sliding grooves; and sliding strips are fixed on the inner sides of the vertical beams on the two sides of the frame, and the sliding sleeves can move up and down along the sliding strips.
More preferably, lubricating grease is coated between the sliding sleeve and the sliding strip, and the sliding sleeve and the sliding strip are in clearance fit.
More preferably, a drawing groove for assembling and disassembling the splitting tool is arranged on the base or at the bottom of the upper pressing block.
More preferably, the cleaving tool comprises a triangular bar, an arc-type cleaving tool, or a spike-type cleaving tool.
More preferably, it is a mixture of more preferably,
the base is welded with a bottom cross beam of the frame;
alternatively, the first and second electrodes may be,
the bottom of the base is provided with a groove and is fixedly connected with a bottom cross beam of the frame through the groove in a matching manner.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, by arranging the elastic component, the accurate centering of the splitting tools above and below the rock test block can be realized, so that the rock test block can be smoothly split under the combined action of the upper splitting tool and the lower splitting tool. And a tester does not need to hold the rock test piece by hands, so that the safety of the test is ensured.
Drawings
FIG. 1 is a three-dimensional perspective view of the structure of the present invention;
fig. 2 is a front view of the structure of the present invention.
In the drawings:
the device comprises a frame 1, a loading part 2, an upper pressing block 3, an upper triangular steel bar 4, an elastic part 5, a rock test block 6, a lower triangular steel bar 7 and a base 8.
Detailed Description
For a better understanding of the present invention, the contents of the present invention will be further explained below with reference to the drawings and examples, but the contents of the present invention are not limited to the following examples.
The utility model provides a splitting die for square blocks, which is structurally shown in figures 1 and 2 and comprises a frame 1, a loading part 2, an upper pressing block 3, an upper triangular steel bar 4, an elastic part 5, a rock test block 6, a lower triangular steel bar 7 and a base 8.
The frame 1 is a rectangular frame body; the base 8 is fixedly connected with a bottom cross beam of the frame 1; a lower triangular steel bar 7 is fixed on the upper part of the base 8; the loading part 2 penetrates through the upper cross beam of the frame 1 and can vertically apply pressure to the upper pressing block 3; go up briquetting 3 and act on rock test block 6 through last triangle steel strip 4 with pressure for rock test block 6 is split under last triangle steel strip 4 and lower triangle steel strip 7's combined action.
In order to avoid the inclination of the rock test block 6 due to uneven stress, a plurality of elastic components 5 are uniformly fixed between the upper part of the rock test block 6 and the upper pressing block 3; a plurality of elastic components are uniformly fixed between the bottom of the rock test block 6 and the base 8. When the rock test block 6 is inclined due to uneven stress, the elastic part on one side is pulled and the elastic part 5 on the other side is compressed, and the elastic parts 5 also generate corresponding reaction force to prevent the rock test block 6 from inclining. From this can realize going up the accurate centering of triangle steel strip 4 and lower triangle steel strip 7 to can guarantee that rock test block 6 can be split smoothly under the combined action of splitting instrument from top to bottom.
The elastic component 5 comprises a gasket, a spring and a stud, two ends of the spring are fixedly connected to the gasket, and the gasket is fixed on the rock test block 6, the upper pressing block 3 or the base 8 through the stud.
In order to ensure that the upper pressing block 3 can vertically face downwards, sliding grooves are formed in two sides of the upper pressing block 3, and sliding sleeves are installed on the sliding grooves; correspondingly, sliding strips are fixed on the inner sides of the vertical beams at the two sides of the frame 1, and the sliding sleeves can move up and down along the sliding strips. In order to move freely, lubricating grease is coated between the sliding sleeve and the sliding strip, and the sliding sleeve and the sliding strip are in clearance fit, so that the upper pressing block 3 can vertically move up and down along the sliding strip.
Through the effect of the upper triangular steel strip 4 and the lower triangular steel strip 7, linear load can be applied to the rock test block 6. Because the splitting tools (the upper triangular steel bar 4 and the lower triangular steel bar 7) are easy to wear and further affect the test quality after being used for a long time, the base 8 is provided with the drawing groove so as to conveniently install and replace the lower triangular steel bar 7; and a drawing groove is formed in the bottom of the upper pressing block 3, so that the upper triangular steel bar 4 can be conveniently installed and replaced.
The base 8 can be welded with the bottom beam of the frame 1, or a groove can be arranged at the bottom of the base and is fixedly connected with the bottom beam of the frame 1 in a matching way through the groove.
The above embodiment has been described by taking the above triangular steel bar 4 and the lower triangular steel bar 7 as examples of the cleaving tool, but the present invention is not limited thereto, and may be other cleaving tools such as an arc type cleaving tool, a nail type cleaving tool, etc.
The loading member 2 may be a plunger piston, or may be a feed loading member such as a screw rod.
The working process of the utility model is as follows:
fixing the base 8 and the frame 1, and installing the lower triangular steel bar 7 in the drawing groove of the base 8; placing a rock test block 6 above a base 8, installing an upper triangular steel bar 4 at the bottom of an upper pressing block 3, uniformly arranging a plurality of springs around the bottom, fixedly connecting the lower parts of the springs to a gasket 5, and then placing the upper pressing block 3 on the rock test block 6 to enable the upper triangular steel bar 4 to face the rock test block 6;
fixing the shell of the loading component 2 in the middle of the upper cross beam of the frame 1, applying vertical pressure to the upper pressing block 3 to enable the upper pressing block 3 to be uniformly loaded at a certain loading speed, and applying linear acting force to the rock test block 6 under the combined action of the upper triangular steel bar 4 and the lower triangular steel bar 7 until the rock test block 6 is split.
According to the utility model, the polished test block body can be more accurate in size by arranging the scale of the vernier caliper 1 fixed with the base 2, so that the test precision can be ensured.
The above description is only an application embodiment of the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention should not be limited by the description, and any equivalent changes made according to the technical solution of the present invention should be covered within the scope of the present invention.
Claims (9)
1. The utility model provides a splitting mould of square block, its characterized in that, splitting mould of square block includes:
the device comprises a frame (1), a loading part (2), an upper pressing block (3), a splitting tool, an elastic part (5), a rock test block (6) and a base (8);
the frame (1) is a rectangular frame body, and the base (8) is fixedly connected with a bottom cross beam of the frame (1); a splitting tool is fixed on the base (8);
the loading part (2) penetrates through an upper cross beam of the frame (1) and can vertically apply pressure to the upper pressing block (3); the upper pressing block (3) applies pressure to the rock test block (6) through the splitting tool fixed at the bottom of the upper pressing block, so that the rock test block (6) is split under the combined action of the splitting tool above and below the rock test block;
the elastic components (5) are uniformly fixed between the upper part of the rock test block (6) and the upper pressing block (3).
2. The square block splitting die of claim 1, wherein a plurality of elastic members (5) are uniformly fixed between the bottom of the rock test block (6) and the base (8).
3. A square block splitting die according to claim 1 or 2, wherein said resilient member (5) comprises:
shims, springs, and studs;
the two ends of the spring are fixedly connected to the gasket, and the gasket is fixed on the rock test block (6) and the upper pressing block (3) through the studs.
4. A square block splitting die according to claim 1 or 2, wherein said resilient member (5) comprises:
shims, springs, and studs;
the two ends of the spring are fixedly connected to the gasket, and the gasket is fixed on the rock test block (6) and the base (8) through the studs.
5. The square block splitting die of claim 1,
sliding grooves are formed in two sides of the upper pressing block (3), and sliding sleeves are mounted on the sliding grooves;
and sliding strips are fixed on the inner sides of the vertical beams on the two sides of the frame (1), and the sliding sleeves can move up and down along the sliding strips.
6. The square block splitting die of claim 5,
lubricating grease is smeared between the sliding sleeve and the sliding strip, and the sliding sleeve and the sliding strip are in clearance fit.
7. The square block splitting die of claim 1,
and a drawing groove for assembling and disassembling the splitting tool is arranged on the base (8) or at the bottom of the upper pressing block (3).
8. The square block splitting die of claim 1,
the splitting tool comprises a triangular steel bar, an arc-shaped splitting tool or a nail-shaped splitting tool.
9. The square block splitting die of claim 1,
the base (8) is welded with a bottom cross beam of the frame (1);
alternatively, the first and second electrodes may be,
the bottom of the base (8) is provided with a groove and is fixedly connected with a bottom cross beam of the frame (1) in a matching way through the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122234002.5U CN215985490U (en) | 2021-09-15 | 2021-09-15 | Splitting mold for square block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122234002.5U CN215985490U (en) | 2021-09-15 | 2021-09-15 | Splitting mold for square block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215985490U true CN215985490U (en) | 2022-03-08 |
Family
ID=80466413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122234002.5U Active CN215985490U (en) | 2021-09-15 | 2021-09-15 | Splitting mold for square block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215985490U (en) |
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2021
- 2021-09-15 CN CN202122234002.5U patent/CN215985490U/en active Active
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