CN218917003U - Rock test block centering fixing and fragment collecting device for point load test - Google Patents
Rock test block centering fixing and fragment collecting device for point load test Download PDFInfo
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- CN218917003U CN218917003U CN202220688123.9U CN202220688123U CN218917003U CN 218917003 U CN218917003 U CN 218917003U CN 202220688123 U CN202220688123 U CN 202220688123U CN 218917003 U CN218917003 U CN 218917003U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
The utility model relates to a rock test block centering fixing and fragment collecting device for a point load test, which comprises a telescopic circular bearing box for centering the rock test block, wherein the bearing box comprises a top plate, an upper half box, a lower half box and a bottom plate, the upper half box is connected with a point load instrument bearing support column through a semicircular clamping groove and a component thereof, the diameter of the top plate connected with the upper half box is larger than that of the semicircular clamping groove, the lower half box is contained in the upper half box and connected with the bottom plate, a raised circular object placing table is arranged in the middle of the bottom plate, when the rock test block is centered on the bottom plate object placing table, an elastic net sleeve covers rock Dan Shikuai and is fixed on the wall of the lower half box through a spring hook, and in the rising process of a lower conical press head, the object placing table drives the lower half box to rise, and the circular bearing box gradually contracts until the rock test block is propped against an upper conical press head, so that the rock test block is fixed.
Description
Technical Field
The utility model relates to point load test equipment, in particular to a rock test block centering fixing and fragment collecting device for point load test.
Background
The conventional rock uniaxial compressive strength test is to process the rock into a standard rock sample, the rock sample is subjected to compressive test by adopting a press machine indoors, the standard rock sample is processed at high cost, and the fine structure in the rock can be influenced in the processing process, so that the rock uniaxial compressive strength is replaced by the strength index value obtained by the point load test. The point load test has no strict requirement on a test piece, the test piece does not need to be prepared carefully like the compression strength test, and the small point load test device is convenient to carry and has certain advantages.
The point load test is widely applied to the engineering fields of mine engineering, civil engineering, geological engineering and the like, and has the characteristics of rapidness, portability, low cost and the like compared with the indoor rock mechanical test. The equipment for the point load strength test is relatively simple and mainly comprises a manual hydraulic pump, a hydraulic jack, a pair of conical pressing heads, a fixed rod and other components. The irregular rock test block can be selected at the working site, the irregular rock test block is placed between the upper pressurizing conical head and the lower pressurizing conical head of the point load test device, and the pressurizing is stopped after the hand-operated hydraulic jack press rod is operated until the rock test block is damaged.
The existing point load test device has some defects, the rock test block is usually manually positioned, the test block gradually approaches to the bottom of the upper conical pressure head along with the rising of the lower conical head, the stability of the test block is required to be kept in the whole rising process, the coincidence of the center of the test block and the center of the pressure head is ensured, and the hand can be loosened after the test block is held. Therefore, the potential safety hazard that the conical head is pressed to the hand exists in the point load test process, and the stability of the center of the test block is difficult to keep simultaneously in the manual loading process, so that the test operation has great inconvenience. In addition, the fixed rock test block is damaged under continuous compressive stress, fragments burst and fragments splash are generated, harm is brought to test operators, a certain difficulty is brought to splicing recovery of the broken small blocks after the test, and the analysis of the conditions such as the breaking form and the crack damage of the rock test block is obviously influenced.
Therefore, in the research of obtaining rock strength index values by using a point load test method, a solution is required to solve the above technical problems.
Disclosure of Invention
The utility model aims to provide a rock test block centering fixing and fragment collecting device for point load test, which is used for solving the problems in the background technology.
The rock test block centering fixing and fragment collecting device for point load test comprises a telescopic round bearing box for placing the rock test block and a connecting component for fixedly supporting the bearing box, wherein the bearing box comprises a top plate, an upper half box, a lower half box and a bottom plate, a through hole I for the upper conical pressure head to pass through is arranged on the top plate at a position corresponding to the upper conical pressure head, an opening I for the upper conical pressure head to pass through is arranged on one side of the upper half box at a position corresponding to the upper conical pressure head, the upper half box is connected with a point load instrument bearing support column through a connecting component formed by a semicircular clamping groove and a component thereof, and the diameter of the top plate is larger than that of the semicircular clamping groove, the upper half box connected with the top plate is clamped on the semicircular clamping groove more firmly, the upper half box and the lower half box form a telescopic bearing box main body, the telescopic range is a rock test block size range, the middle of the bottom plate is a raised hollow round object placing table and is detachably connected with the lower half box, a through hole II which can be used for the lower conical pressure head to pass through is formed in the position corresponding to the lower conical pressure head on the bottom plate, when the rock test block is placed on the object placing table on the bottom plate in the middle, the elastic net sleeve covers the rock Dan Shikuai and is fixed on the wall of the lower half box through a spring hook, the object placing table drives the lower half box to rise in the rising process of the lower conical pressure head, and the bearing box gradually contracts to the rock test block to be abutted against the upper conical pressure head, so that the rock test block is fixed. The elastic net sleeve is made of flexible materials, so that the contact surface of the elastic net sleeve and the irregular rock test block is prevented from generating larger contact force, and the fracture form of the rock test block is prevented from being influenced.
Before the test starts, the position of the through hole of the top plate is higher than the bottom of the upper conical pressure head, so that after the upper conical pressure head contacts the upper surface of the rock test block, the top plate is still a certain distance away from the upper surface of the test block, namely, the breaking process of the test block is not influenced, and the good splash preventing effect can be achieved.
The bearing box is a round box and mainly comprises an upper half box and a lower half box, wherein the upper half box is connected with the point load instrument bearing support column through a semicircular clamping groove and a component thereof, and the diameter of a top plate connected with the upper half box is larger than that of the semicircular clamping groove, so that the upper half box connected with the top plate is clamped on the semicircular clamping groove more firmly.
The semicircular clamping groove is connected with the point load instrument bearing support column through the connecting component, the number of angles corresponding to the arc of the semicircular clamping groove is larger than 180 degrees, and the angle number can be selected to be in the range of 185-195 degrees according to the rigidity of the clamping groove.
The lower half box of bearing box is detachably connected with the bottom plate, the center of the bottom plate is concave to the edge of the bottom plate, and broken fragments and clastic rocks fall into the bottom of the bearing box, so that the fragments can be spliced, restored and clastic collected conveniently.
The object placing table is positioned on the bottom plate, a convex round hole which can be used for the lower conical pressure head to pass through is formed in the position, corresponding to the lower conical pressure head, of the bottom plate, and the aperture is larger than the diameter of the conical pressure head by 1-3 mm.
The elastic net sleeve and the spring hooks are used for fixing the rock test block on the object placing table on the wall of the lower half box, and are connected to four corners of the lower half box symmetrically through flexible and rigid elastic connection, so that balanced supporting force is provided for the rock test block.
The connecting component, the top plate, the upper half box, the lower half box and the bottom plate are made of metal materials such as stainless steel, alloy, carbon steel and iron, and can also be made of transparent plastic plates.
The rock test blocks placed on the object placing table are fixed on the lower half box wall through the elastic net sleeve and the spring hooks, and the fixed points are 4-5.
The utility model has the following beneficial effects:
according to the utility model, the movable connection is arranged between the upper half box and the lower half box of the bearing box, so that the bearing box can be deformed in a telescopic way along the loading direction, the size of the contained rock test block is 40-80 mm, the rock test block is placed on the object placing table through the detachable bottom plate, the rock test block is fixed on the lower half box wall by adopting the elastic net sleeve and the spring hook, the bearing box with the placed test block is fixed on the semicircular clamping groove, the lower conical pressure head carries the rock test block upwards to be propped against the upper conical pressure head, in the test process, the rock test block is not needed to be manually held and kept centered, broken rock falls into the bottom of the bearing box, the convenience of fragment splicing restoration and fragment collection after the test is improved while the safety trapping is eliminated, the whole device is simple in structure, convenient to operate and the test efficiency is remarkably improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of a rock mass centering and fragment collection apparatus according to a preferred embodiment of the present utility model;
FIG. 2 is a perspective view of the rock specimen centering and fragment collection apparatus of the preferred embodiment of the present utility model (shown in transparent configuration in FIG. 2);
FIG. 3 is a schematic view of a semicircular clamping groove and its components in a rock test block centering and fragment collecting apparatus according to a preferred embodiment of the present utility model.
Wherein, in the figure: the digital display comprises a 1-digital display, a 2-semicircular clamping groove, a 3-semicircular clamping groove component, a 4-caliper, a 5-point load meter bearing support, a 6-jack, a 7-base, a 8-first through hole, a 9-top plate, a 10-upper half box, a 11-lower half box, a 12-bottom plate, a 13-second through hole, a 14-object placing table, a 15-elastic net sleeve, a 16-spring hook, a 17-lower conical press head, a 18-upper conical press head, a 20-bearing box, a 21-bearing box connecting component, a 22-opening I, a 23-support cross frame I, a 24-support cross frame II and a 25-pressure sensor.
Detailed Description
Embodiments of the utility model are described in detail below with reference to the attached drawings, but the utility model can be implemented in a number of different ways, which are defined and covered by the claims.
The utility model provides a rock test block centering fixing and fragment collecting device for a point load test, which is arranged on a point load instrument bearing support column 5, referring to fig. 1, wherein the point load test device comprises a base 7 and a jack 6 arranged on the base, a first supporting transverse frame 23 is fixedly connected to a jack cylinder body, the first supporting transverse frame can slide up and down on the bearing support column, so that the vertical distance between a lower conical press head 17 on the first supporting transverse frame and an upper conical press head 18 on a second supporting transverse frame 24 can be adjusted, the upper conical press head and the lower conical press head are vertically arranged and keep a coaxial position relation, the base, the supporting transverse frame and the bearing support column serve as a supporting system of the point load test device, the jack, the upper conical press head and the lower conical press head serve as a loading system of the point load test device, in the embodiment, a pressure sensor 25 is embedded in the upper conical press head, the pressure sensor is connected with a digital display 1 for displaying a real-time strength value, the pressure sensor and the digital display serve as a force measuring system of the point load test device, the rock test block centering and the fragment collecting device is arranged between the first supporting frame 23 and the second supporting transverse frame 24, and the point load test device is fixed on the point load instrument.
Referring to fig. 2, the rock test block centering and fragment collecting apparatus includes a retractable circular carrying case 20 for placing the rock test block, and a connecting member 21 for fixedly supporting the carrying case.
One end of the connecting component is connected with the point load instrument bearing support column, the other end of the connecting component is connected with the semicircular clamping groove, the bearing box main body is mainly connected with the semicircular clamping groove by the upper half box, the number of angles corresponding to the circular arc of the semicircular clamping groove is larger than 180 degrees, the angle degree can be selected to be in the range of 185-195 degrees according to the rigidity of the clamping groove, and the diameter of the top plate is larger than that of the semicircular clamping groove, so that the upper half box connected with the top plate is clamped on the semicircular clamping groove more firmly.
The main body of the bearing box is composed of an upper half box (height h 1 ) With the lower half box (height h) 2 ) Constitution, h 1 ＝h 2 The box body diameter d=80 mm=40 mm, the telescopic travel of the two box halves is in the size range of the rock test block, namely the size of the rock test block is 40-80 mm, and the connection of the bearing box main body and the bottom plate is detachable connection, such as threaded connection or snap connection.
The middle part of the bottom plate is a raised hollow round object placing table, a second through hole for the lower conical pressure head to pass through is formed in the position, corresponding to the lower conical pressure head, of the bottom plate, and the aperture of the second through hole is larger than the diameter of the conical pressure head by 1-3 mm.
The through hole of roof position is higher than last toper pressure head bottom for after last toper pressure head contact rock test block upper surface, the roof still is apart from the test block upper surface certain distance, does not influence the breaking process of test block promptly, also can play good anti-splash effect.
The center of the bottom plate is concave to the edge of the bottom plate, and broken fragments and chippings are convenient to splice, restore and collect the chippings when falling into the bottom of the bearing box.
In this embodiment, the connecting member, the top plate, the upper half box, the lower half box and the bottom plate are made of metal materials, such as stainless steel, alloy, carbon steel, iron, or transparent plastic plates, the spring net sleeve is made of flexible materials, such as nylon ropes or rubber springs, and the spring hook is made of rigid materials, such as steel wire springs.
The process of point load testing using the rock test block centering and fragment collection apparatus of the present utility model is generally as follows:
placing the rock test block on the object placing table 14, fixing the rock test block on the lower half box wall by adopting an elastic net sleeve 15 and four spring hooks 16, installing a bottom plate into a bearing box 20, fixing the bearing box in a semicircular clamping groove, opening a loading system and a force measuring system, shaking a jack compression bar loading system, driving the lower half box to rise by the object placing table in the rising process of a lower conical pressure head 17, gradually shrinking the bearing box until the rock test block is abutted against an upper conical pressure head 18, so that the rock test block is fixed, continuously loaded, stopping loading after the rock test block is broken, reading the point load intensity of the rock test block through a display 1, removing the bearing box, taking out the obtained small block after breaking, and placing the small block at a designated position for later comparison research, and performing the point load test of the next rock test block.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a rock test block is fixed with fragment collection device placed in middle for some load test, its characterized in that, including the scalable circular carrier box that is used for placing the rock test block placed in middle, and be used for fixed stay carrier box's connecting element, the carrier box includes roof, first box, second box, bottom plate, be provided with the through-hole that can go up the toper pressure head and pass through in the position that corresponds the toper pressure head on the roof, first box one side is provided with the opening that can go up the toper pressure head and pass through in the position that corresponds the toper pressure head, and first box passes through semicircle draw-in groove and the connecting element that constitutes of component is connected with some load meter carrier pillar, first box and second box constitute the scalability carrier box main part, and the expansion range is rock test block size scope, the bottom plate middle part is bellied cavity circular thing platform and is detachable connection with second box, is provided with the through-hole that can be used for down the toper pressure head to pass through in the position that corresponds the toper pressure head on the bottom plate, place the thing platform in middle, cover Dan Shikuai with the elasticity net cover rock test block to go up the toper pressure head down in the middle to the supporting the toper pressure head, the toper pressure head is gone up to the toper pressure head in the process with the supporting the box through the spring hook.
2. A rock test block centering and fragment collecting device for point load testing as claimed in claim 1, wherein the top plate has a diameter larger than that of the semicircular clamping groove, so that the upper half box connected with the top plate is more firmly clamped on the semicircular clamping groove.
3. A rock test block centering and fragment collecting device for point load testing according to claim 1, wherein the main body of the carrying case is connected with the point load meter carrying support column by the upper half case through a semicircular clamping groove and a member thereof.
4. The rock specimen centering and fragment collecting apparatus for point load test as claimed in claim 1, wherein the main body of the carrying case is composed of an upper case half and a lower case half, the upper case half having a height h 1 The height of the lower half box is h 2 ，h 1 ＝h 2 The diameter d of the box body is=80 mm, the telescopic travel of the two box halves is in the size range of the rock test block, and the size of the rock test block is 40-80 mm.
5. A rock specimen centering and fragment collecting device for point load testing as claimed in claim 1, wherein the aperture of the second through hole is 1-3 mm larger than the diameter of the lower conical ram.
6. A rock test block centering and fragment collection apparatus for point load testing as claimed in claim 1, wherein the floor is concave from center to edge, and broken fragments and detritus rock fall to the bottom of the carrier box for fragment splice recovery and detritus collection.
7. The device for centering and fixing rock test blocks and collecting fragments for point load test according to claim 1, wherein the rock test blocks placed on the object placing table are fixed on the lower half box wall through elastic net sleeves and spring hooks, and the fixing points are 4-5.
8. A rock specimen centering and fragment collecting device for point load testing as claimed in claim 3, wherein the number of angles corresponding to the arc of the semicircular clamping groove is in the range of 185-195 °.
9. A rock specimen centering and fragment collecting device for point load testing as claimed in claim 5, wherein the connection of the carrier box body to the base plate is a detachable connection.
10. The rock specimen centering and fragment collecting device for point load testing of claim 7, wherein said elastic webbing is flexible material and said spring hanger is rigid material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220688123.9U CN218917003U (en) | 2022-03-28 | 2022-03-28 | Rock test block centering fixing and fragment collecting device for point load test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220688123.9U CN218917003U (en) | 2022-03-28 | 2022-03-28 | Rock test block centering fixing and fragment collecting device for point load test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218917003U true CN218917003U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220688123.9U Active CN218917003U (en) | 2022-03-28 | 2022-03-28 | Rock test block centering fixing and fragment collecting device for point load test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218917003U (en) |
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2022
- 2022-03-28 CN CN202220688123.9U patent/CN218917003U/en active Active
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