CN217954097U - Combined clamp for rock test - Google Patents
Combined clamp for rock test Download PDFInfo
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- CN217954097U CN217954097U CN202221978203.4U CN202221978203U CN217954097U CN 217954097 U CN217954097 U CN 217954097U CN 202221978203 U CN202221978203 U CN 202221978203U CN 217954097 U CN217954097 U CN 217954097U
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Abstract
The utility model provides a modular fixture for rock test relates to rock mechanical properties test field, including base, removal support, conical support, side splint, first back-up roll, brazilian splitting pressure head and three point bending pressure head, the base is equipped with first recess and second recess, the removal support links to each other with the base through first recess, conical support links to each other with the base through the second recess, side splint lower extreme and removal support upper end fixed connection, side splint upper end is equipped with V type groove, first back-up roll is put on V type groove to be connected with side splint through the connecting piece, three point bending pressure head presses the sample of putting on first back-up roll when carrying out three point bending test; the side splint side has third recess and mounting hole for fixed brazilian splitting pressure head and sample, can carry out rock brazilian splitting and three point bending test respectively through this anchor clamps, it is the separate use to have improved current rock brazilian splitting and three point bending's anchor clamps, and anchor clamps function singleness does not have the problem of comprehensiveness.
Description
Technical Field
The utility model relates to a rock mechanics performance test field particularly, relates to a modular fixture for rock test.
Background
With the rapid development of economy in China, rocks gradually enter the lives of people, and the safety problem of the rocks is increasingly serious. The tensile strength and the fracture toughness of the rock are important indexes of mechanical properties of the rock, a method for measuring the tensile strength of the rock can be divided into a direct method and an indirect method, the direct method is difficult to test, the indirect method such as a Brazilian fracture test is easier, a three-point bending test is usually used for researching the I-type fracture toughness and the I/II-type composite crack propagation behavior of the rock material, and the two methods are simple in loading mode and wide in application.
In actual operation, the existing clamps for Brazilian splitting and three-point bending of the rock are separately used, so that the clamps have single function and no comprehensiveness, and the test efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a modular fixture for rock test aims at improving that current rock brazilian splitting and three point bending's anchor clamps separately use, leads to anchor clamps function singleness, does not have the comprehensiveness, has reduced test efficiency's problem simultaneously.
The utility model adopts the following scheme:
a combined clamp for rock tests comprises a base, a movable support, a conical support, a side clamping plate, a first supporting roller, a Brazilian splitting pressure head and a three-point bending pressure head, wherein the base is provided with a first groove and a second groove, the movable support is connected with the base through the first groove, the conical support is fixedly connected with the base through the second groove, the lower end of the side clamping plate is fixedly connected with the upper end of the movable support, the upper end of the side clamping plate is provided with a V-shaped groove, the first supporting roller is placed on the V-shaped groove and is connected with the side clamping plate through a connecting piece, and the three-point bending pressure head is configured to press a sample placed on the first supporting roller when a three-point bending test is performed; and a third groove and a mounting hole are formed at the side end of the side clamping plate and used for fixing the Brazilian splitting pressure head and the sample.
As a further improvement, scales are arranged on one side of the base; the side clamping plate is provided with a calibration line corresponding to the base scale.
As a further improvement, the first groove and the second groove are both T-shaped grooves.
As a further improvement, the movable support is a T-shaped sliding block corresponding to the first groove, the movable support is embedded in the first groove of the base, and the top end of the movable support is lower than the upper surface of the base.
As a further improvement, the conical support comprises an upper conical seat and a lower i-shaped seat, the upper conical seat is located outside the second groove, the bottom of the lower i-shaped seat is embedded in the second groove of the base, and the lower surface of the top is flush with the upper surface of the base.
As a further improvement, the third groove is a rectangular groove, the mounting hole is a threaded hole, the rectangular groove is used for supporting the brazilian splitting pressure head, and the threaded hole is used for mounting a bolt to support the brazilian splitting test sample.
As a further improvement, the width of the brazilian splitting indenter is smaller than the rectangular groove.
As a further improvement, the connecting piece is a spring with a hook, one end of the spring with the hook is connected with the first supporting roller, and the other end of the spring with the hook is connected with a fixing bolt of the spring with the hook of the side clamping plate.
As a further improvement, the first support roller is used for a three-point bending test, and the conical support is used for a Brazilian splitting test.
By adopting the technical scheme, the utility model discloses can gain following technological effect:
according to the combined clamp for the rock test, the upper end of the side clamping plate is provided with the V-shaped groove, the first supporting roller is placed on the V-shaped groove and is connected with the side clamping plate through the connecting piece, and the three-point bending pressure head presses a sample placed on the first supporting roller when a three-point bending test is carried out; the side splint side still is equipped with third recess and mounting hole for fixed brazilian splitting pressure head and sample, can carry out rock brazilian splitting and three-point bending test respectively through this anchor clamps, thereby it uses separately to have improved current rock brazilian splitting and three-point bending's anchor clamps, and anchor clamps function singleness does not have the problem of comprehensiveness.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic view of a base according to a first embodiment of the present invention;
fig. 3 is a schematic view of a mobile support according to a first embodiment of the present invention;
fig. 4 is a schematic view of a conical support according to a first embodiment of the present invention;
fig. 5 is a schematic view of a side clamping plate according to a first embodiment of the present invention;
fig. 6 is a schematic view of a first support roller according to a first embodiment of the present invention;
FIG. 7 is a schematic view of a Brazilian cleavage indenter according to a first embodiment of the present invention;
fig. 8 is a schematic view of a spring with a hook according to a first embodiment of the present invention;
fig. 9 is a schematic view of a three-point bending ram according to a first embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
With reference to fig. 1 to 9, a first embodiment of the present invention provides a modular fixture for rock testing, including a base 6, a movable support 9, a conical support 7, a side plate 3, a first support roller 2, a brazilian cleavage press head 1 and a three-point bending press head 12, wherein the base 6 is provided with a first groove 13 and a second groove 14, the movable support 9 is embedded in the first groove 13, the conical support 7 is fixedly connected to the base 6 through the second groove 14 and a bolt, the lower end of the side plate 3 is fixedly connected to the upper end of the movable support 9 through the bolt, the upper end of the side plate 3 is provided with a V-shaped groove 24, the first support roller 2 is placed on the V-shaped groove 24 and is connected to the side plate 3 through a hooked spring 4, and the three-point bending press head 12 is configured to press a sample placed on the first support roller 2 when performing a three-point bending test; the side end of the side clamping plate 3 is also provided with a third groove 23 and a mounting hole 22 for fixing the Brazilian splitting pressure head 1 and the sample.
Further, the relative both sides of first recess 13 all are equipped with removal support 9, and two equal fixed mounting in removal support 9 upper ends have side plate 3, and first rod 2 has all been placed in V type groove 24 on two side plate 3, can place on two first rods 2 carrying out the sample of being convenient for of three point bending test.
In this embodiment, the first groove 13 and the second groove 14 are both T-shaped grooves, so that the structure is simple and the manufacture is convenient; remove support 9 and correspond first recess 13 and be T type slider, remove support 9 and embedded in first recess 13, the top is less than the upper surface of base, and removes support 9 upper end and be equipped with removal support location screw hole 17, and 3 lower extremes of side splint are equipped with side splint location screw hole 21, and side splint location screw hole 21 and removal support location screw hole 17 realize fixed connection through the bolt to realize removing the removal that removes support 9 and then drive side splint 3.
Further, the conical support 7 comprises an upper conical seat and a lower i-shaped seat, the upper conical seat is located outside the second groove 14, the bottom of the lower i-shaped seat is embedded in the second groove 14 of the base, and the lower surface of the top is flush with the upper surface of the base 6 and used for supporting the whole conical support 7; and be equipped with base location screw hole 15 on the base 6, conical support 7 passes through conical support 7's lower part I shape seat location screw hole 18 and base location screw hole 15 in order to realize conical support 7's fixed, specifically is: the conical support positioning bolt 8 is in threaded connection with the lower I-shaped support positioning threaded hole 18 and the base positioning threaded hole 15, and then the conical support 7 is fixed on the base 6.
Further, the base 6 is further provided with a graduated scale 16, and the side clamping plate 3 is provided with a calibration line 20 corresponding to the graduated scale 16 of the base 6, for matching with the graduated scale 16 of the base 6 and reading the span of two points of the three-point bent sample.
In this embodiment, the third groove 23 is a rectangular groove, the mounting hole 22 is a side plate support threaded hole, the rectangular groove is used for supporting the brazilian cleavage indenter 1, and the side plate support threaded hole is used for mounting the side plate support bolt 11 to support the brazilian cleavage test sample.
Further, the width of the Brazilian splitting pressure head 1 is smaller than the rectangular groove, so that the Brazilian splitting pressure head 1 can enter the rectangular groove conveniently, and the Brazilian splitting pressure head 1 is supported.
Further, the side clamping plate 3 is further provided with a threaded hole 19 for fixing a spring with a hook, the threaded hole 19 is used for installing the threaded hole 10 for fixing the spring with a hook, one end of the spring with a hook 4 is connected with the threaded hole 10 for fixing the spring with a hook, and the other end of the spring with a hook is connected with the first supporting roller 2, so that the first supporting roller 2 is connected.
As shown in fig. 9, the three-point bending indenter 12 is provided with an indenter hooked spring fixing screw hole 25 and an arc-shaped groove 27, the indenter hooked spring fixing screw hole 25 is used to fix the indenter hooked spring 26, and the arc-shaped groove 27 is used to mount the second branch roller 2a.
Example 1 three-point bending test
The sample is made into a standard square sample before the experiment, the length range of the measurable sample is 28-80 mm, the width is less than 80mm, and the thickness is less than 60mm.
As shown in fig. 1:
step 101, firstly assembling the clamp of the utility model, installing the two side clamping plates 3 and the movable support 9 on the base 6 through two bolts, and sliding the position of the movable support 9 according to the size of the model, the clamp of the utility model does not need to install the conical support 7 and the side clamping plate supporting bolt 11 when performing a three-point bending test;
102, mounting the first supporting roller 2 on the V-shaped groove 24 of the side clamping plate, and fixing the first supporting roller 2 through the hooked spring 4;
103, placing the three-point bending sample on two first support rollers 2, fixing the Brazilian splitting pressure head 1 on a servo press, and slowly descending the three-point bending pressure head 12 to ensure that a second support roller 2a of the three-point bending pressure head 12 is superposed with the middle part of the sample;
and step 104, applying a load to the sample, performing three-point bending test on the sample, and collecting the test data through a data acquisition device to conveniently analyze the mechanical property of the sample.
Example 2 Brazilian cleavage test
As shown in fig. 1:
step 201, before the experiment, the sample is made into a standard cylindrical sample, the diameter of which is 50mm, and the thickness of which is 25mm.
Step 202, at first will the utility model discloses anchor clamps are assembled, install both sides splint 3 and removal support 9 on base 6 through two bolts, also install conical support 7 on base 6 through four conical support positioning bolt 8.
And step 203, taking down the first supporting roller 2 and the hooked spring 4, placing the sample on the conical support 7, and rotating the side clamping plate supporting bolt 11 to fix the sample.
And step 204, mounting the Brazilian splitting press head 1 on the rectangular groove 23 of the side clamping plate, wherein the tip of the press head is aligned with the middle part of the sample.
Step 205, applying a load to the sample, performing the barcie split test on the sample, and collecting the test data through a data acquisition device, so as to conveniently analyze the mechanical properties of the sample.
The utility model provides a three point bending test and brazilian splitting test can be carried out to the sample respectively to the anchor clamps that have improved present rock brazilian splitting and three point bending are separately used, lead to anchor clamps function singleness, do not have the comprehensiveness, have reduced the problem of test efficiency simultaneously. The user can select to carry out the three-point bending test or Brazilian splitting test on the sample according to the requirement.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.
Claims (9)
1. The combined clamp for the rock test is characterized by comprising a base, a movable support, a conical support, a side clamping plate, a first supporting roller, a Brazilian splitting pressure head and a three-point bending pressure head, wherein the base is provided with a first groove and a second groove, the movable support is connected with the base through the first groove, the conical support is fixedly connected with the base through the second groove, the lower end of the side clamping plate is fixedly connected with the upper end of the movable support, the upper end of the side clamping plate is provided with a V-shaped groove, the first supporting roller is placed on the V-shaped groove and is connected with the side clamping plate through a connecting piece, and the three-point bending pressure head is configured to press a sample placed on the first supporting roller when a three-point bending test is performed; and a third groove and a mounting hole are formed at the side end of the side clamping plate and used for fixing the Brazilian splitting pressure head and the sample.
2. The modular fixture for rock testing of claim 1, wherein the base is provided with a scale on one side; the side clamping plate is provided with a calibration line corresponding to the base scale.
3. The modular fixture for rock testing of claim 1, wherein the first and second grooves are each a T-slot.
4. The modular fixture for rock testing of claim 3, wherein the movable support is a T-shaped slider corresponding to the first groove, and the movable support is embedded in the first groove of the base and has a top end lower than the upper surface of the base.
5. The modular fixture for rock testing of claim 3, wherein the conical support comprises an upper conical seat and a lower I-shaped seat, the upper conical seat is located outside the second groove, the bottom of the lower I-shaped seat is embedded in the second groove of the base, and the lower surface of the top is flush with the upper surface of the base.
6. The modular fixture for rock testing of claim 1, wherein the third recess is a rectangular recess, and the mounting hole is a threaded hole for supporting a brazilian cleave indenter, and the threaded hole is a mounting bolt for supporting a brazilian cleave test specimen.
7. The modular jig for rock testing of claim 6, wherein the Brazilian cleave indenter width is smaller than the rectangular groove.
8. The modular fixture for rock testing of claim 1, wherein the connecting member is a hooked spring having one end connected to the first support roller and the other end connected to a side clamping plate hooked spring fixing bolt.
9. The modular fixture for rock testing of claim 1, wherein the first support roller is for a three-point bend test and the conical support is for a brazilian split test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221978203.4U CN217954097U (en) | 2022-07-29 | 2022-07-29 | Combined clamp for rock test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221978203.4U CN217954097U (en) | 2022-07-29 | 2022-07-29 | Combined clamp for rock test |
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| Publication Number | Publication Date |
|---|---|
| CN217954097U true CN217954097U (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221978203.4U Active CN217954097U (en) | 2022-07-29 | 2022-07-29 | Combined clamp for rock test |
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| CN (1) | CN217954097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115266315A (en) * | 2022-07-29 | 2022-11-01 | 华侨大学 | Combined clamp for rock test |
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2022
- 2022-07-29 CN CN202221978203.4U patent/CN217954097U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115266315A (en) * | 2022-07-29 | 2022-11-01 | 华侨大学 | Combined clamp for rock test |
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