A test instrument for preventing fragmentation and splashing loads in sandy dolomite

Abstract

This invention relates to the field of rock point load strength testing technology, specifically to a sandy dolomite anti-fragmentation splash point load testing instrument, comprising a base, a rotating plate, and a support frame. The rotating plate is rotatably mounted on the base via an angle adjustment mechanism, and a loading mechanism is fixedly connected to the rotating plate. The support frame is fixedly connected to the base, and an upper pressure head is fixedly connected to the support frame. The advantages of this invention are: workers can complete the test without holding the sample, avoiding hand injuries, freeing up workers' hands for other operations, effectively preventing debris from flying outwards when the sample breaks, avoiding injury to workers, eliminating safety hazards during the test, and allowing sample debris that would normally splash outwards to fall downwards through the protective plate for easy collection by workers, ensuring the integrity of the broken sample and facilitating comparative analysis.

Description

Technical Field

[0001] This invention relates to the field of rock point load strength testing technology, specifically to a sandy dolomite anti-fragmentation splash point load testing instrument. Background Technology

[0002] Point load testing involves placing a rock specimen between two spherical conical pressure plates and applying a concentrated load until failure. The point load strength of the rock is then determined based on the failure load. Point load strength can be used as an indicator for rock strength classification and rock mass weathering classification. It can also be used to evaluate the anisotropy of rock strength and to predict other related strengths such as uniaxial compressive strength and tensile strength. Point load strength testing is applicable to all types of regular or irregular rocks, including drill cores and rock blocks taken from rock outcrops, exploration pits, tunnels, and roadways. When conducting point load tests on rocks, a point load testing instrument is required to complete the strength test of the rock sample.

[0003] The existing point load testing instrument lacks protective functions. The fragments generated by the sample breakage are easy to fly and cause injury to the staff. Moreover, the flying fragments are not easy to collect. During the test, the staff needs to use one hand to support the sample, which means that they can only use the other hand to perform other operations, which is not convenient and can easily cause crush injuries to the hands. During the test, the sample is prone to sudden breakage due to excessive loading speed or excessive loading force, which makes it impossible for the staff to observe and record accurate values ​​in time.

[0004] Therefore, a test instrument for preventing the fragmentation and splashing of sandy dolomite is needed to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems—namely, the ease with which fragments from broken samples can cause injury to workers, the difficulty in collecting the fragments, the need for workers to support the sample with one hand during testing, the limitation to using only the other hand for other operations, poor convenience, the risk of hand injuries, the tendency for samples to suddenly break due to excessive loading speed or force, and the inability for workers to observe and record accurate values ​​in a timely manner—this invention provides a sand-formed dolomite anti-fragmentation splash load testing instrument.

[0006] A sand-formed dolomite splash load testing instrument includes a base, a rotating plate, and a support frame. The rotating plate is rotatably mounted on the base via an angle adjustment mechanism, and a loading mechanism is fixedly connected to the rotating plate. The support frame is fixedly connected to the base, and an upper pressure head is fixedly connected to the support frame. A support plate is fixedly connected to the top of the loading mechanism, and a lower pressure head is fixedly connected to the top of the support plate. A height adjustment mechanism is provided on the top of the support frame, and an adjustment box is movably mounted on the height adjustment mechanism. A first gear is rotatably connected inside the adjustment box, and first racks are slidably connected to both the front and rear sides inside the adjustment box. A connecting rod is fixedly connected to each first rack, and a clamping assembly is fixedly connected to the bottom of each connecting rod. A second gear is rotatably connected to one side of each clamping assembly, and a protective plate is slidably connected to each connecting rod. A second rack that meshes with the second gear is fixedly connected to each protective plate.

[0007] The aforementioned sand-formed dolomite anti-shattering splash load testing instrument includes a clamping assembly comprising a clamping seat fixedly connected to the bottom end of a connecting rod. A sliding groove is provided inside the clamping seat, and a first slider is slidably connected within the groove. A placement plate is fixedly connected to one side of the first slider, and a first spring is fixedly connected between the placement plate and the corresponding clamping seat. A third rack is fixedly connected to the other side of the first slider, and the third rack meshes with a corresponding second gear. Sliding frames are fixedly connected to both the front and rear sides of the clamping seat, and a second slider is slidably connected within each sliding frame. A second spring is fixedly connected between each second slider and its corresponding sliding frame, and a clamping plate is fixedly connected to the top of each second slider.

[0008] The aforementioned sand-formed dolomite anti-shattering splash load tester has an extension plate slidably connected inside the protective plate, an arc-shaped groove on the top of the protective plate, and a tightening bolt threadedly connected to the extension plate.

[0009] The aforementioned sand-formed dolomite anti-fragmentation splash load tester includes a loading mechanism comprising a jack fixedly connected to a rotating plate, a rocker arm detachably mounted on one side of the jack, an oil pressure gauge mounted on the other side of the jack, and a buffer assembly provided between the rocker arm and the rotating plate.

[0010] The aforementioned sand-formed dolomite anti-fragmentation splash load testing instrument includes a buffer assembly comprising a vertical guide rail and a sliding sleeve. The vertical guide rail is fixedly connected to a rotating plate, and the sliding sleeve is fitted onto a rocker arm. A vertical rod that can slide up and down along the vertical guide rail is rotatably connected to the bottom of the sliding sleeve. Multiple spherical grooves are evenly distributed on the left side of the vertical rod. A locking seat is fixedly connected to the left side of the vertical guide rail. A locking hole is provided on the locking seat, and a limiting rod is slidably connected inside the locking hole. A spherical protrusion matching the spherical grooves is fixedly connected to the right end of the limiting rod. A limiting disc is fixedly connected to the limiting rod. A third spring is fixedly connected to one side of the locking seat, and the right end of the third spring abuts against the left side of the limiting disc. A locking block matching the locking hole is fixedly connected to the limiting rod.

[0011] The aforementioned sand-formed dolomite anti-shattering splash load tester includes a height adjustment mechanism comprising a connecting frame and uprights. A threaded rod is rotatably connected to the connecting frame. There are two uprights, which are symmetrically fixedly connected to the top of the support frame. An adjustment box is slidably connected between the two uprights. A threaded sleeve is fixedly connected to the rear side of the adjustment box, and the threaded sleeve and the threaded rod are threadedly connected.

[0012] The aforementioned sand-formed dolomite anti-fragmentation splash load tester includes an angle adjustment mechanism comprising a worm gear rotatably connected inside a base. A worm wheel is rotatably connected inside the base, and the worm wheel meshes with the worm gear. The bottom of the worm wheel is fixedly connected to the bottom of the rotating plate.

[0013] The aforementioned sand-formed dolomite anti-shattering splash load tester has two guide rods symmetrically fixedly connected to the support frame, a connecting sleeve fixedly connected to the left side of the support plate, the connecting sleeve being fitted onto the left side of the support frame, a scale line being provided on the right side of the support frame, and an indicator being fixedly connected to the right side of the support plate.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention, by placing the sample on the placement plate, uses a second spring to push the clamping plate towards the sample via a second slider to fix the sample. When the operator uses the height adjustment mechanism to bring the upper end of the sample against the bottom of the upper pressure head, and then slowly adjusts the height adjustment mechanism, the sample will press down on the placement plate and drive the first slider and the third rack to move downwards. At this time, the third rack will drive the second gear to rotate, and the second gear will then drive the protective plate to move upwards via the second rack. When the sample presses the placement plate down to its limit position, the protective plate will rise to the same height as the sample and surround the sample in the middle. The operator can fix the sample on the testing instrument and complete the test without holding it, avoiding hand injuries and freeing up the operator's hands to control the loading mechanism or perform other operations, reducing the difficulty of the operator's work. It can effectively prevent the debris generated when the sample breaks from flying outwards, avoiding injury to the operator and eliminating safety hazards during the test. The sample debris that would normally fly outwards falls downwards after being surrounded by the protective plate, making it easy for the operator to collect it and ensuring the integrity of the broken sample, which is convenient for comparative analysis.

[0016] 2. In this invention, by rotating the first gear, two first racks slide within the adjustment box, causing the two first racks to slide through the connecting rod, thereby adjusting the distance between the two clamping components according to the size of the sample. This invention is suitable for clamping and fixing samples of different sizes, enhancing the applicability of the testing instrument.

[0017] 3. This invention adjusts and fixes the extension plate by pulling it out from the corresponding protective plate, so that the two extension plates abut together, and then tightening the corresponding top bolts. It is suitable for enclosures of samples of different sizes, improving the applicability of the testing instrument.

[0018] 4. In this invention, by rotating the limiting rod, the locking block is aligned with the locking hole. The third spring pushes the limiting rod to slide to the right through the limiting disc, causing the spherical protrusion at one end of the limiting rod to engage with the spherical groove on the left side of the vertical rod. As the operator presses the rocker arm downwards, the spherical groove squeezes the spherical protrusion out of its interior. At this time, the vertical rod slides downwards. Subsequently, under the push of the third spring, the limiting rod drives the spherical protrusion to re-engage with the next spherical groove. The above process is repeated, slowing down the downward movement of the vertical rod, thus making the downward pressing process of the rocker arm slower and smoother. This allows the jack to slowly and smoothly apply pressure to the sample through the pressing head, preventing the sample from suddenly breaking due to excessive pressing speed or pressure. This avoids the operator being unable to observe the accurate value on the oil pressure gauge due to sudden sample breakage, making the experimental process smoother and improving the accuracy of experimental data.

[0019] 5. In this invention, a worm gear drives a worm wheel to rotate, which in turn drives a rotating plate to rotate. This rotating plate then drives a loading mechanism to rotate, allowing the angle of the loading mechanism to be adjusted. Operators can adjust the angle of the loading mechanism according to their personal habits and actual needs, placing the rocker arm and oil pressure gauge at an angle that is easy to operate and observe. This improves the operator's comfort and enhances the applicability of the testing instrument. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of the adjustment box in this invention;

[0022] Figure 3 This is a schematic diagram of the clamping component in the present invention;

[0023] Figure 4 This is a schematic diagram of the protective plate in this invention;

[0024] Figure 5 This is a cross-sectional structural diagram of the clamping component in this invention;

[0025] Figure 6 This is a schematic diagram showing the position of the clamping seat in this invention;

[0026] Figure 7 This is a schematic diagram showing the position of the sliding frame in this invention;

[0027] Figure 8 This is a schematic diagram showing the positional relationship between the second slider and the clamping plate in this invention;

[0028] Figure 9 This is a schematic diagram of the loading mechanism in this invention;

[0029] Figure 10 This is a cross-sectional structural diagram of the buffer component in this invention;

[0030] Figure 11 This is a schematic diagram showing the position of the card connector in this invention;

[0031] Figure 12 This is a schematic diagram of the limiting rod in this invention;

[0032] Figure 13 This is a schematic diagram of the buffer component in this invention;

[0033] Figure 14 This is a schematic diagram of the angle adjustment mechanism in this invention;

[0034] Figure 15 This is a schematic diagram showing the positional relationship between the first slider and the placement plate in this invention.

[0035] In the diagram: 1-Base; 2-Rotating plate; 3-Support frame; 4-Upper pressure head; 5-Panel; 6-Lower pressure head; 7-Adjusting box; 8-First gear; 9-First rack; 10-Connecting rod; 11-Second gear; 12-Protective plate; 13-Second rack; 14-Clamping seat; 15-Slide groove; 16-First slider; 17-Placement plate; 18-First spring; 19-Third rack; 20-Slide frame; 21-Second slider; 22-Second spring; 23-Clamping plate; 24-Extension plate; 25-Arc groove; 26-Tightening bolt; 27-Jack; 28-Rocker arm; 29-Oil pressure gauge; 30-Vertical guide rail; 31-Sliding sleeve; 32-Vertical rod; 33-Spherical groove; 34-Snap-fit ​​seat; 35-Snap-fit ​​hole; 36-Limit rod; 37-Spherical protrusion; 38-Limit disc; 39-Third spring; 40-Snap block; 41-Connecting frame; 42-Upright rod; 43-Threaded rod; 44-Threaded sleeve; 45-Worm gear; 46-Worm wheel; 47-Guide rod; 48-Connecting sleeve; 49-Scale line; 50-Indicator. Detailed Implementation

[0036] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0037] This invention discloses a test instrument for preventing fragmentation and splashing of sandy dolomite, such as... Figure 1-6As shown, the system includes a base 1, a rotating plate 2, and a support frame 3. The rotating plate 2 is rotatably mounted on the base 1 via an angle adjustment mechanism, and a loading mechanism is fixedly connected to the rotating plate 2. The support frame 3 is fixedly connected to the base 1, and an upper pressure head 4 is fixedly connected to the bottom surface of the top of the support frame 3. A support plate 5 is rotatably connected to the top of the loading mechanism, and a lower pressure head 6 is fixedly connected to the top of the support plate 5. Both the upper pressure head 4 and the lower pressure head 6 are spherical conical structures and are located on the same vertical axis. The top of the support frame 3 is provided with a height adjustment mechanism, on which an adjustment box 7 is movably mounted. The height adjustment mechanism can adjust the height position of the adjustment box 7, and the interior of the adjustment box 7 can rotate. A first gear 8 is connected, and a first handle located outside the adjustment box 7 is fixedly connected to the first gear 8. A first rack 9 is slidably connected to both the front and rear sides inside the adjustment box 7. A connecting rod 10 is fixedly connected to each first rack 9. A transverse groove is symmetrically opened on the top of the support frame 3 and the bottom of the adjustment box 7. The connecting rod 10 passes through the transverse groove and extends to the middle of the support frame 3. A clamping assembly is fixedly connected to the bottom of each connecting rod 10. A second gear 11 is rotatably connected to one side of each clamping assembly. The second gear 11 meshes with the clamping assembly. A protective plate 12 is slidably connected to each connecting rod 10. A second rack 13 that meshes with the second gear 11 is fixedly connected to each protective plate 12.

[0038] When it is necessary to test the sample, the operator turns the first handle, which drives the first gear 8 to rotate. The first gear 8 drives the two first racks 9 to slide in the adjustment box 7, so that the two first racks 9 drive the corresponding clamping components to slide through the connecting rod 10. The distance between the two clamping components is adjusted to a suitable position according to the size of the sample. At this time, the sample is placed on the clamping components and initially fixed by the clamping components.

[0039] At this time, the height of the adjusting box 7 is adjusted by the height adjustment mechanism, so that the adjusting box 7 drives the clamping assembly and the sample to move upward through the connecting rod 10 until the top of the sample and the bottom of the upper pressure head 4 are in contact. Continue to slowly adjust the height adjustment mechanism. At this time, the sample presses down on the clamping assembly, and the clamping assembly will drive the second gear 11 to rotate. The second gear 11 then drives the second rack 13 meshing with it to slide upward, so that the protective plate 12 moves upward synchronously while pressing down on the clamping assembly. When the clamping assembly moves downward to the limit position, the adjustment of the height adjustment mechanism is stopped. At this time, the protective plate 12 rises to the same height as the clamping assembly and surrounds the sample in the middle.

[0040] At this point, by adjusting the loading mechanism, the support plate 5 drives the lower pressure head 6 to move upward until the top of the lower pressure head 6 contacts the ground of the sample. Then, continue to slowly and uniformly adjust the loading mechanism, which will drive the lower pressure head 6 to apply pressure to the sample until the sample breaks, thus completing the test process.

[0041] Workers can fix the sample on the testing instrument and complete the test without holding it, avoiding hand injuries and freeing up their hands to control the loading mechanism or perform other operations, reducing the difficulty of their work. The protective plate 12 surrounds the sample, effectively preventing debris from flying out when the sample breaks, thus avoiding injury to workers and eliminating potential safety hazards during the test. The sample debris that would normally fly outward falls downward after being blocked by the protective plate 12, making it easy for workers to collect and ensuring the integrity of the broken sample for comparative analysis. By adjusting the distance between the two clamping components, it can be used to clamp and fix samples of different sizes.

[0042] like Figure 3 , Figure 5-8 and Figure 15 As shown, the clamping assembly includes a clamping seat 14 fixedly connected to the bottom end of the connecting rod 10. The second gear 11 is rotatably connected to one side of the clamping seat 14. A sliding groove 15 is provided inside the clamping seat 14, and a first slider 16 is slidably connected in the sliding groove 15. A placement plate 17 is fixedly connected to one side of the first slider 16. A first spring 18 is fixedly connected between the placement plate 17 and the corresponding clamping seat 14. A sliding rod penetrating the bottom of the clamping seat 14 is fixedly connected to the bottom of the placement plate 17. The sliding rod and the first slider 16... The two sides cooperate to limit the placement plate 17 so that it can only slide in the up and down direction. The other side of the first slider 16 is fixedly connected to a third rack 19, which meshes with the corresponding second gear 11. The front and rear sides of the clamping seat 14 are fixedly connected to sliding frames 20. A second slider 21 is slidably connected in each sliding frame 20. A second spring 22 is fixedly connected between each second slider 21 and the corresponding sliding frame 20. A clamping plate 23 is fixedly connected to the top of each second slider 21.

[0043] The staff places the sample on the placement plate 17. The second spring 22 in the sliding frame 20 pushes the corresponding clamping plate 23 toward the sample through the second slider 21, thereby initially fixing the sample. When the staff adjusts the height adjustment mechanism to make the upper end of the sample abut against the bottom end of the upper pressure head 4, the staff continues to slowly adjust the height adjustment mechanism. At this time, the sample will press the placement plate 17 downward. The placement plate 17 drives the first slider 16 and the third rack 19 to move downward. At this time, the third rack 19 will drive the second gear 11 to rotate. The second gear 11 then drives the protective plate 12 to move upward through the second rack 13. When the sample presses the placement plate 17 downward to the limit position, the protective plate 12 rises to the same height as the sample and surrounds the sample in the middle.

[0044] The staff only needs to manually place the sample on the placement plate 17 and clamp it with the clamping plate 23. The rest of the test process does not require manual support of the sample. The subsequent fixation and clamping of the sample can be completed by adjusting the height adjustment mechanism, freeing up the staff's hands. During the adjustment of the height adjustment mechanism, the protective plate 12 will automatically rise to the same height as the sample and surround the sample. The staff does not need to manually adjust the protective plate 12, reducing the workload of the staff and improving the automation level of the testing instrument.

[0045] like Figure 4 As shown, an extension plate 24 is slidably connected inside the protective plate 12. An arc-shaped groove 25 is provided on the top of the protective plate 12, and a tightening bolt 26 is threaded onto the extension plate 24. When the sample is large, the distance between the two protective plates 12 is far, resulting in a gap between the corresponding protective plates 12 on both sides. At this time, the operator pulls the extension plate 24 out from the corresponding protective plate 12, so that the two extension plates 24 abut together, and then tightens the corresponding tightening bolts 26 to complete the adjustment and fixation of the extension plate 24. This method is suitable for enclosure of samples of different sizes and improves the applicability of the testing instrument.

[0046] like Figure 9 As shown, the loading mechanism includes a jack 27 fixedly connected to the rotating plate 2, a support plate 5 rotatably connected to the top of the jack 27, a rocker arm 28 detachably installed on one side of the jack 27, and an oil pressure gauge 29 installed on the other side of the jack 27. A buffer assembly is provided between the rocker arm 28 and the rotating plate 2. The operator adjusts the jack 27 by lifting and pressing the rocker arm 28 up and down, thereby adjusting the height of the support plate 5, so that the pressing head 6 on the support plate 5 can squeeze the sample. The pressure applied to the sample can be directly observed through the oil pressure gauge 29. The buffer assembly can buffer the force applied to the rocker arm 28 by the operator, making the pressing process of the rocker arm 28 more stable.

[0047] like Figure 9-13 As shown, the buffer assembly includes a vertical guide rail 30 and a sliding sleeve 31. The vertical guide rail 30 is fixedly connected to the rotating plate 2. The sliding sleeve 31 is sleeved on the rocker arm 28. A vertical rod 32, which can slide up and down along the vertical guide rail 30, is rotatably connected to the bottom of the sliding sleeve 31. Multiple spherical grooves 33 are evenly distributed on the left side of the vertical rod 32. A locking seat 34 is fixedly connected to the left side of the vertical guide rail 30. A locking hole 35 is provided on the locking seat 34, and a limit rod 36 is slidably connected within the locking hole 35. The right end of the limiting rod 36 is fixedly connected to a spherical protrusion 37 that matches the spherical groove 33. When the spherical protrusion 37 and the spherical groove 33 are engaged, the spherical surface of the spherical protrusion 37 is not completely embedded in the groove of the spherical groove 33. The limiting rod 36 is fixedly connected to a limiting disk 38. A third spring 39 is fixedly connected to one side of the engaging seat 34. The right end of the third spring 39 abuts against the left side of the limiting disk 38. The limiting rod 36 is fixedly connected to a locking block 40 that matches the locking hole 35.

[0048] During the repeated lifting and pressing of the rocker arm 28, the sliding sleeve 31 will repeatedly slide on the rocker arm 28, while the top of the vertical rod 32 will repeatedly rotate around its hinge point with the sliding sleeve 31, so that the vertical rod 32 will repeatedly slide up and down along the vertical guide rail 30. When the top of the pressing head 6 has not yet contacted the bottom of the sample, the limiting rod 36 is pulled outward along the locking hole 35. When the locking block 40 is disengaged from the locking hole 35, the limiting rod 36 is rotated so that the locking block 40 is engaged with the locking seat 34 on the outside of the locking hole 35. At this time, the third spring 39 is in a compressed state. At this time, the spherical protrusion 37 at one end of the limiting rod 36 and the spherical groove 33 on the left side of the vertical rod 32 are disengaged. The buffer mechanism does not apply any resistance to the rocker arm 28. The operator can quickly adjust the top of the pressing head 6 to abut against the bottom of the sample through the loading mechanism.

[0049] After the top of the pressing head 6 abuts against the bottom of the sample, rotate the limiting rod 36 so that the locking block 40 aligns with the locking hole 35. The third spring 39 pushes the limiting rod 36 to slide to the right through the limiting disc 38, so that the spherical protrusion 37 at one end of the limiting rod 36 is locked into the spherical groove 33 on the left side of the vertical rod 32. As the operator presses the rocker arm 28 downward, the spherical groove 33 will squeeze the spherical protrusion 37 out of its interior. At this time, the vertical rod 32 slides downward, and then, under the push of the third spring 39, the limiting rod 36 drives the spherical protrusion 37 to slide downward. The protrusion 37 re-engages into the next spherical groove 33, and the above process is repeated to decelerate the downward-moving vertical rod 32, thereby making the pressing process of the rocker arm 28 slower and smoother. This allows the jack 27 to slowly and smoothly apply pressure to the sample through the pressing head 6, preventing the sample from suddenly breaking due to excessive pressing speed or pressure. This also avoids the situation where the staff cannot observe the accurate value on the oil pressure gauge 29 due to sudden sample breakage, making the experimental process smoother and improving the accuracy of the experimental data.

[0050] like Figure 2 As shown, the height adjustment mechanism includes a connecting frame 41 and a vertical rod 42. A threaded rod 43 is rotatably connected to the connecting frame 41, and a second handle is fixedly connected to the top of the threaded rod 43. There are two vertical rods 42, which are symmetrically fixedly connected to the top of the support frame 3. The adjustment box 7 is slidably connected between the two vertical rods 42. A threaded sleeve 44 is fixedly connected to the rear side of the adjustment box 7, and the threaded sleeve 44 is threadedly connected to the threaded rod 43. When the height of the adjustment box 7 needs to be adjusted, the threaded rod 43 is rotated by the second handle. Through the cooperation of the threaded rod 43 and the threaded sleeve 44, the adjustment box 7 slides up and down along the vertical rod 42. When the adjustment box 7 is adjusted to a suitable height, the rotation of the second handle is stopped, thus completing the adjustment and fixing of the height of the adjustment box 7.

[0051] like Figure 14 As shown, the angle adjustment mechanism includes a worm gear 45, with a third handle fixedly connected to its front end. The worm gear 45 is rotatably connected inside the base 1, and a worm wheel 46 is rotatably connected inside the base 1. The worm wheel 46 meshes with the worm gear 45, and the bottom of the worm wheel 46 is fixedly connected to the bottom of the rotating plate 2. The operator rotates the worm gear 45 through the third handle, which drives the worm wheel 46 to rotate. The worm wheel 46 then drives the rotating plate 2 to rotate, thereby causing the rotating plate 2 to rotate the loading mechanism and adjust the angle of the loading mechanism. The operator can adjust the angle of the loading mechanism according to personal habits and actual needs, so that the rocker arm 28 and the oil pressure gauge 29 are at an angle that is easy to operate and observe, improving the operator's operating comfort and enhancing the applicability of the testing instrument.

[0052] like Figure 1 As shown, two guide rods 47 are symmetrically fixedly connected to the support frame 3. The tray 5 can slide up and down along the guide rods 47. A connecting sleeve 48 is fixedly connected to the left side of the tray 5. The connecting sleeve 48 is fitted onto the left side of the support frame 3. A scale line 49 is provided on the right side of the support frame 3. An indicator 50 is fixedly connected to the right side of the tray 5. The guide rods 47 and the connecting sleeve 48 can limit and guide the tray 5, further improving the stability of the tray 5 during the up and down sliding process. The operator can obtain data such as the axial dimension of the sample through the position of the indicator 50 on the scale line 49, which is convenient for the operator to observe and calculate, improve the operator's work efficiency, and enhance the practicality of the testing instrument.

[0053] Working process: When it is necessary to test the sample, the operator rotates the first gear 8 to drive the two first racks 9 to slide, so that the two first racks 9 drive the corresponding clamping components to slide through the connecting rod 10. According to the size of the sample, the distance between the two clamping components is adjusted to a suitable position. At this time, the sample is placed on the placement plate 17. The second spring 22 in the slide frame 20 pushes the corresponding clamping plate 23 toward the sample through the second slider 21 to initially fix the sample.

[0054] The staff uses the height adjustment mechanism to make the upper end of the sample abut against the bottom end of the upper pressure head 4, and continues to slowly adjust the height adjustment mechanism. At this time, the sample will press down on the placement plate 17. The placement plate 17 drives the first slider 16 and the third rack 19 to move downward. At this time, the third rack 19 will drive the second gear 11 to rotate. The second gear 11 then drives the protective plate 12 to move upward through the second rack 13. When the sample presses the placement plate 17 down to the limit position, the protective plate 12 will rise to the same height as the sample and surround the sample in the middle. When the sample is large, the distance between the two protective plates 12 is far. The staff pulls the extension plate 24 out from the corresponding protective plate 12 so that the two extension plates 24 abut together. Then tighten the corresponding top bolt 26 to completely surround the sample in the middle of the protective plate 12.

[0055] At this point, the loading mechanism is adjusted to an angle that is easy to observe and operate using the angle adjustment mechanism. The loading mechanism is then adjusted so that the support plate 5 drives the pressure head 6 upward until the top of the pressure head 6 contacts the ground of the sample. The loading mechanism is then adjusted slowly and uniformly. The buffer assembly can buffer the force applied to the rocker arm 28, making the downward pressing process of the rocker arm 28 more stable. The loading mechanism will drive the pressure head 6 to apply pressure to the sample until the sample breaks. The pressure applied to the sample is observed through the oil pressure gauge 29, thus completing the test process.

[0056] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0059] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A sanding dolomite chip resistant point load tester characterized by, The system includes a base (1), a rotating plate (2), and a support frame (3). The rotating plate (2) is rotatably mounted on the base (1) via an angle adjustment mechanism, and a loading mechanism is fixedly connected to the rotating plate (2). The support frame (3) is fixedly connected to the base (1), and an upper pressure head (4) is fixedly connected to the support frame (3). A support plate (5) is fixedly connected to the top of the loading mechanism, and a lower pressure head (6) is fixedly connected to the top of the support plate (5). The top of the support frame (3) is provided with a height adjustment mechanism, and an adjustment box (7) is movably mounted on the height adjustment mechanism. The internal rotation of the adjustment box (7) is connected to... A first gear (8) is connected to the adjustment box (7). The front and rear sides of the adjustment box (7) are slidably connected to the first rack (9). The first gear (8) drives the two first racks (9) to slide in the adjustment box (7). A connecting rod (10) is fixedly connected to each first rack (9). A clamping component is fixedly connected to the bottom of each connecting rod (10). A second gear (11) is rotatably connected to one side of each clamping component. A protective plate (12) is slidably connected to each connecting rod (10). A second rack (13) that meshes with the second gear (11) is fixedly connected to each protective plate (12). The clamping assembly includes a clamping seat (14) fixedly connected to the bottom end of the connecting rod (10). A groove (15) is provided inside the clamping seat (14). A first slider (16) is slidably connected within the groove (15). A placement plate (17) is fixedly connected to one side of the first slider (16). A first spring (18) is fixedly connected between the placement plate (17) and the corresponding clamping seat (14). A third rack (19) is fixedly connected to the other side of the first slider (16). The third rack (19) and a corresponding second gear (11) are connected... The clamping base (14) is fixedly connected to the front and rear sides of the clamping base (14). A second slider (21) is slidably connected in each of the sliding frames (20). A second spring (22) is fixedly connected between each second slider (21) and the corresponding sliding frame (20). A clamping plate (23) is fixedly connected to the top of each second slider (21). When the sample is placed on the placement plate (17), the second spring (22) in the sliding frame (20) pushes the corresponding clamping plate (23) toward the sample direction through the second slider (21). The loading mechanism includes a jack (27) fixedly connected to the rotating plate (2), a rocker arm (28) is detachably installed on one side of the jack (27), an oil pressure gauge (29) is installed on the other side of the jack (27), and a buffer assembly is provided between the rocker arm (28) and the rotating plate (2); The buffer assembly includes a vertical guide rail (30) and a sliding sleeve (31). The vertical guide rail (30) is fixedly connected to the rotating plate (2). The sliding sleeve (31) is sleeved on the rocker arm (28). The bottom of the sliding sleeve (31) is rotatably connected to a vertical rod (32) that can slide up and down along the vertical guide rail (30). The left side of the vertical rod (32) is evenly provided with multiple spherical grooves (33). The left side of the vertical guide rail (30) is fixedly connected to a locking seat (34). The locking seat (34) is provided with locking holes. 35) A limiting rod (36) is slidably connected inside the card hole (35). A spherical protrusion (37) matching the spherical groove (33) is fixedly connected to the right end of the limiting rod (36). A limiting disk (38) is fixedly connected to the limiting rod (36). A third spring (39) is fixedly connected to one side of the card seat (34). The right end of the third spring (39) abuts against the left side of the limiting disk (38). A card block (40) matching the card hole (35) is fixedly connected to the limiting rod (36).

2. A gritted dolomite chip resistant point load tester according to claim 1, characterised in that, The protective plate (12) has an extension plate (24) slidably connected inside. The top of the protective plate (12) has an arc groove (25), and the extension plate (24) is threaded with a tightening bolt (26).

3. The sand-formed dolomite anti-fragmentation splash load tester according to claim 1, characterized in that, The height adjustment mechanism includes a connecting frame (41) and a vertical rod (42). A threaded rod (43) is rotatably connected to the connecting frame (41). There are two vertical rods (42), which are symmetrically fixedly connected to the top of the support frame (3). The adjustment box (7) is slidably connected between the two vertical rods (42). A threaded sleeve (44) is fixedly connected to the rear side of the adjustment box (7). The threaded sleeve (44) and the threaded rod (43) are threadedly connected.

4. The sand-formed dolomite anti-fragmentation splash load tester according to claim 1, characterized in that, The angle adjustment mechanism includes a worm (45) which is rotatably connected inside the base (1). A worm wheel (46) is rotatably connected inside the base (1). The worm wheel (46) meshes with the worm (45). The bottom of the worm wheel (46) is fixedly connected to the bottom of the rotating plate (2).

5. The sand-formed dolomite anti-fragmentation splash load tester according to claim 1, characterized in that, Two guide rods (47) are symmetrically fixedly connected to the support frame (3). The tray can slide up and down along the guide rods. A connecting sleeve (48) is fixedly connected to the left side of the tray (5). The connecting sleeve (48) is fitted on the left side of the support frame (3). A scale line (49) is provided on the right side of the support frame (3). An indicator (50) is fixedly connected to the right side of the tray (5).

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