A rock point load testing instrument

Abstract

The utility model relates to a kind of rock point load tester, including base, and pressure mechanism and measuring mechanism being located on base;Pressure mechanism includes first support and jack, and first support includes fixed plate, and the bottom of fixed plate is equipped with fixed pressurizing cone, jack is located below fixed plate, and the jacking end of jack is connected with movable plate, and the top of movable plate is equipped with movable pressurizing cone;Measuring mechanism includes second support and vernier caliper assembly, and second support includes top plate, and first gear and second gear are installed on top plate, first gear is connected with rotating shaft, and rotating shaft is rotatably arranged in top plate, and second gear is connected with adjusting knob, and vernier caliper assembly includes main measuring scale, and two sliders are slidably installed on main measuring scale, and main measuring scale is located above fixed plate, and main measuring scale is connected with rotating shaft, and the bottom of slider is equipped with slide bar, and measuring claw is slidably arranged on slide bar.The utility model has the advantages of simple operation, high accuracy, high testing efficiency and the like.

Description

Technical Field

[0001] This utility model relates to the field of rock testing technology, and more specifically, to a rock point load tester. Background Technology

[0002] Geological exploration mainly refers to the investigation and research of geological conditions such as rocks, stratigraphic structure, minerals, groundwater, and landforms in a certain area. When exploring rocks, various tests are usually carried out on the rocks to determine their composition, compressive strength, etc. Rock point load test is mainly used to test the compressive strength of rocks.

[0003] Because the rock blocks tested in point load tests are usually irregularly shaped, it is necessary to measure the dimensions of the rock block before it is damaged, convert them into an equivalent core diameter, and then combine this with the subsequently obtained failure load to calculate the rock point load strength. This is the only way to obtain more accurate test data. However, current testing instruments do not have dimensional measurement capabilities. Therefore, the measurement work and the pressure application work of the rock block need to be carried out separately. That is, the dimensions of the rock block are measured manually first, and then the rock block is placed on the testing instrument for pressure failure. This method is relatively cumbersome and inefficient. Moreover, because the rock block is irregularly shaped, there is a large deviation between the position of the rock block when measured manually beforehand and the actual position of the rock block when pressure is applied. This directly leads to insufficient accuracy of the relevant dimensions, resulting in large errors and seriously affecting the accuracy of the rock point load test results. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a rock point load testing instrument, which can perform real-time measurement on a fixed rock block and effectively improve the testing efficiency of point load tests.

[0005] The objective of this utility model is achieved through the following technical solution.

[0006] A rock point load testing instrument includes a base and, on the base, a pressure mechanism comprising a first support and a jack. The first support includes a fixed plate with a fixed pressure cone at its bottom. The jack is positioned below the fixed plate, and a movable plate is connected to the lifting end of the jack. A movable pressure cone is located at the top of the movable plate. A measuring mechanism includes a second support and a vernier caliper assembly. The second support includes a top plate and a first gear and a second gear mounted on the top plate. The first gear is connected to a rotating shaft that rotatably passes through the top plate. The second gear is connected to an adjustment knob. The vernier caliper assembly includes a main measuring scale and two sliders slidably mounted on the main measuring scale. The main measuring scale is located above the fixed plate and connected to the rotating shaft. A sliding rod is located at the bottom of each slider, and a measuring claw is slidably mounted on the sliding rod. The fixed pressure cone and the movable pressure cone are coaxially aligned.

[0007] In the above scheme, during the specific experiment, the rock block is first placed between the fixed pressure cone and the movable pressure cone. Then, the movable plate is raised using a jack, so that the movable pressure cone contacts the rock block. The rock block is initially clamped by the upper and lower fixed pressure cones and the movable pressure cone. Subsequently, the two sliders on the main measuring scale are slid, so that the two measuring jaws abut against the rock block. The size data of the rock block is obtained by reading the scale on the main measuring scale. The main measuring scale is connected to the rotating shaft, and the first gear is sleeved on the rotating shaft. By rotating the adjustment knob, the second gear can drive the first gear to rotate, thereby adjusting the main measuring scale. The ruler rotates, causing the measuring jaws on both sides to rotate, so as to measure the size of the rock block in different directions. By measuring in multiple directions, more accurate equivalent core diameter data can be obtained for irregular rock blocks, improving the accuracy of the test. At the same time, since the measurement is performed after the rock block is fixed by two pressure cones, it can overcome the error caused by manual hand measurement of irregular rock blocks, resulting in higher measurement accuracy. It can also measure the corresponding size in the actual state when the rock block is broken. Compared with the measurement before the rock block is fixed, more accurate dimensional data can be obtained, enhancing the accuracy of the point load test results.

[0008] In one example of this utility model, the measuring jaw includes a measuring part and a sliding part, the sliding part is slidably connected to the slide rod, and a locking screw is installed on the sliding part.

[0009] In the above scheme, the measuring jaws can be locked onto the slide rod by tightening screws, so as to adjust the height of the measuring jaws and make the measurement work more convenient.

[0010] In one example of this invention, the measuring edge of the measuring part is aligned with the side edge of the upper slider.

[0011] In the above scheme, the side of the measuring part that is in contact with the rock block is aligned with the side of the upper slider to facilitate reading during measurement.

[0012] In one example of this utility model, a limiting block is provided at the bottom end of the slide rod.

[0013] In the above scheme, the limiting block is used to limit the measuring claw to prevent it from falling out from the bottom of the slide bar.

[0014] In one example of this utility model, the top plate is provided with a groove to accommodate the first gear and the second gear.

[0015] In the above scheme, the first gear and the second gear are installed in the slots on the top plate and can rotate within the slots.

[0016] In one example of this utility model, the first bracket includes a guide post, the fixing plate is fixedly installed on the top of the guide post, the guide post passes through the movable plate, and the movable plate is slidably connected to the guide post.

[0017] In the above scheme, the guide post passes through the movable plate and can slide relative to the movable plate to guide the movement of the movable plate.

[0018] In one example of this utility model, a vertical measuring ruler is provided on the base, and the vertical measuring ruler is located on one side of the movable plate.

[0019] In the above scheme, the vertical measuring ruler is used to measure the displacement distance of the movable pressure cone from the start to the point when the rock block is destroyed, for subsequent calculations.

[0020] In one example of this invention, the jack is connected to a pressure gauge.

[0021] In the above scheme, the pressure gauge is used to obtain the pressure value when the rock block is broken, so as to obtain test data in a timely manner.

[0022] Compared with the prior art, the beneficial effects of this application are as follows: This application is equipped with a measuring mechanism that can measure the size of the rock block before it is damaged. By combining the measurement and pressure damage of the rock block on one device, the efficiency of the test can be effectively improved. This application features a rotatable vernier caliper assembly that can measure the dimensions of a rock block in multiple directions, obtaining more accurate equivalent core diameter data. It overcomes the errors caused by manual hand-held measurement of irregular rock blocks, resulting in higher measurement accuracy. Furthermore, it can measure the corresponding dimensions of the rock block in its actual state after it has been damaged, providing more precise dimensional data compared to measurements taken before the rock block is fixed, thus improving the accuracy of point load test results. In addition, the vernier caliper assembly is driven to rotate via an adjustment knob, a first gear, and a second gear, making operation simpler and more convenient. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a rock point load testing apparatus according to one embodiment.

[0025] Figure 2 for Figure 1 A magnified view of area A in the middle.

[0026] Explanation of the reference numerals in the figure: 1-Base; 2-First bracket; 21-Fixed plate; 22-Fixed pressure cone; 23-Modible plate; 24-Modible pressure cone; 25-Guide column; 3-Jack; 4-Second bracket; 41-Top plate; 42-Column; 43-First gear; 44-Second gear; 45-Rotating shaft; 46-Adjusting knob; 461-Connecting shaft; 5-Vernier caliper assembly; 51-Main measuring scale; 52-Slider; 53-Slide rod; 531-Limit block; 54-Measuring jaw; 541-Measuring part; 542-Sliding part; 543-Locking screw; 6-Vertical measuring scale; 7-Pressure gauge. Detailed Implementation

[0027] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0028] Please refer to Figure 1 and Figure 2In a preferred embodiment, a rock point load testing instrument is provided, comprising a base 1, and a pressure mechanism and a measuring mechanism disposed on the base 1. The pressure mechanism includes a first support 2 and a jack 3. The first support 2 includes a fixed plate 21, and a fixed pressure cone 22 is provided at the bottom of the fixed plate 21. The jack 3 is disposed below the fixed plate 21, and a movable plate 23 is connected to the lifting end of the jack 3. A movable pressure cone 24 is provided at the top of the movable plate 23. The measuring mechanism includes a second support 4 and a vernier caliper assembly 5. The second support 4 includes a top plate 41, and a first gear 43 and a second gear 44 mounted on the top plate 41. The first gear 43 is connected to a rotating shaft 45. The 45 is rotatably mounted on the top plate 41. The second gear 44 is connected to the adjustment knob 46. The vernier caliper assembly 5 includes a main measuring scale 51 and two sliders 52 slidably mounted on the main measuring scale 51. The main measuring scale 51 is located above the fixed plate 21 and is connected to the rotating shaft 45. The bottom of the slider 52 is provided with a sliding rod 53, and a measuring claw 54 is slidably mounted on the sliding rod 53. The fixed pressure cone 22 and the movable pressure cone 24 are arranged coaxially, and the two measuring claws 54 are located on both sides of the first bracket 2.

[0029] In the specific experiment, the rock block was first placed between the fixed pressure cone 22 and the movable pressure cone 24. Then, the movable plate 23 was raised by the jack 3, so that the movable pressure cone 24 came into contact with the rock block. The rock block was initially clamped by the upper and lower fixed pressure cones 22 and the movable pressure cone 24. Then, the two sliders 52 on the main measuring scale 51 were slid, so that the two measuring jaws 54 abutted against the rock block. The size data of the rock block was obtained by reading the scale on the main measuring scale 51. The main measuring scale 51 was fixedly connected to the rotating shaft 45. The first gear 43 was sleeved on the rotating shaft 45. By rotating the adjusting knob 46, the second gear 44 could drive the first gear 43. 3. Rotation allows the main measuring ruler 51 to rotate, which in turn drives the measuring jaws 54 on both sides to rotate, thereby measuring the diameter of the rock block in different directions. Through measurements in multiple directions, more accurate equivalent core diameter data of irregular rock blocks can be obtained, improving the accuracy of the test. At the same time, since the measurement is performed after the rock block is fixed by two pressure cones, it can overcome the errors caused by manual hand measurement of irregular rock blocks, resulting in higher measurement accuracy. Furthermore, it can measure the corresponding dimensions in the actual state when the rock block is damaged. Compared with measurements performed before the rock block is fixed, more accurate dimensional data can be obtained, enhancing the accuracy of the point load test results.

[0030] It is understandable that, since rock blocks are usually irregularly shaped, the position of the rock block when measured manually by hand deviates from its position when it is fixed by the fixed pressure cone 22 and the movable pressure cone 24. Therefore, the data obtained has a large error and can easily affect the accuracy of the test results. However, this testing instrument performs the measurement work after the rock block is fixed, and the obtained size data is the actual size data of the rock block when it is broken, which can effectively improve the accuracy of the test results.

[0031] Preferably, the adjusting knob 46 has a connecting shaft 461 that cooperates with the second gear 44, which is fixedly connected to the center hole of the second gear 44 to drive the second gear 44 to rotate.

[0032] like Figure 2 As shown, the measuring jaw 54 includes a measuring part 541 and a sliding part 542. The sliding part 542 is slidably connected to the slide rod 53. A locking screw 543 is installed on the sliding part 542. The measuring jaw 54 can be locked onto the slide rod 53 by the locking screw 543, so as to adjust the height of the measuring jaw 54 and make the measurement work more convenient.

[0033] In this embodiment, the measuring edge of the measuring unit 541 is aligned with the side edge of the upper slider 52, and the measuring edge is the side edge that is in contact with the rock block (i.e., Figure 2 The measuring section 541 is located on the right side, so that the side of the slider 52 can be used as a reference directly, which facilitates the reading during measurement.

[0034] In this embodiment, a limiting block 531 is provided at the bottom end of the slide bar 53. The limiting block 531 is used to limit the measuring claw 54 to prevent it from falling out from the bottom of the slide bar 53.

[0035] In this embodiment, the top plate 41 is provided with a groove for accommodating the first gear 43 and the second gear 44. The first gear 43 and the second gear 44 are installed in the groove on the top plate 41 and can rotate in the groove.

[0036] Preferably, the second support 4 further includes a column 42, and a top plate 41 is fixedly installed on the top of the column 42.

[0037] In this embodiment, the first bracket 2 includes a guide post 25, a fixing plate 21 is fixedly installed on the top of the guide post 25, the guide post 25 passes through the movable plate 23, and can slide relative to the movable plate 23 bracket to guide the movement of the movable plate 23.

[0038] Furthermore, a vertical measuring ruler 6 is provided on the base 1. The vertical measuring ruler 6 is located on one side of the movable plate 23. The vertical measuring ruler 6 is used to measure the displacement distance of the movable pressure cone 24 from the start to the time when the rock block is destroyed, for subsequent calculation.

[0039] It should be noted that during the experiment, the displacement distance of the movable pressure cone 24 can be obtained by measuring the movement distance of the movable plate 23.

[0040] In this embodiment, the jack 3 is connected to a pressure gauge 7, which is used to obtain the pressure value when the rock block is broken, so as to obtain test data in a timely manner and facilitate subsequent calculations.

[0041] The working principle of this utility model is as follows: First, the rock block to be tested is placed between the fixed pressure cone 22 and the movable pressure cone 24. The movable plate 23 is moved upward by the jack 3, so that the movable pressure cone 24 and the fixed pressure cone 22 clamp the rock block. Then, the adjustment knob 46 is turned to rotate the vernier caliper assembly 5 to measure the size of the rock block. After the measurement is completed, the jack 3 is started to drive the movable plate 23 and the movable pressure cone 24 to continue to rise until the rock block breaks. The point load strength of the rock block is calculated by using the reading displayed by the pressure gauge 7 and the size data of the rock block.

[0042] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rock point load testing apparatus, characterized in that, Includes a base, and on the base: A pressure mechanism includes a first support and a jack. The first support includes a fixed plate, and a fixed pressure cone is provided at the bottom of the fixed plate. The jack is located below the fixed plate, and a movable plate is connected to the lifting end of the jack. A movable pressure cone is provided at the top of the movable plate. The measuring mechanism includes a second bracket and a vernier caliper assembly. The second bracket includes a top plate, and a first gear and a second gear mounted on the top plate. The first gear is connected to a rotating shaft, which rotatably passes through the top plate. The second gear is connected to an adjustment knob. The vernier caliper assembly includes a main measuring scale and two sliders slidably mounted on the main measuring scale. The main measuring scale is located above the fixed plate and is connected to the rotating shaft. The bottom of each slider is provided with a sliding rod, and a measuring claw is slidably mounted on the sliding rod. The fixed pressure cone and the movable pressure cone are arranged on the same axis.

2. The rock point load testing apparatus according to claim 1, characterized in that, The measuring jaw includes a measuring part and a sliding part. The sliding part is slidably connected to the slide rod, and a locking screw is installed on the sliding part.

3. The rock point load testing apparatus according to claim 2, characterized in that, The measuring edge of the measuring section is aligned with the side edge of the slider above it.

4. The rock point load testing apparatus according to claim 1, characterized in that, The bottom end of the slide bar is provided with a limiting block.

5. The rock point load testing apparatus according to claim 1, characterized in that, The top plate is provided with a slot to accommodate the first gear and the second gear.

6. The rock point load testing apparatus according to claim 1, characterized in that, The first bracket includes a guide post, the fixed plate is fixedly installed on the top of the guide post, the guide post passes through the movable plate, and the movable plate is slidably connected to the guide post.

7. The rock point load testing apparatus according to claim 1, characterized in that, A vertical measuring ruler is provided on the base, and the vertical measuring ruler is located on one side of the movable plate.

8. The rock point load testing apparatus according to claim 1, characterized in that, The jack is connected to a pressure gauge.

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