Compressive strength testing tool

Abstract

The utility model belongs to the technical field of mechanical property testing tools, and discloses a compressive strength testing tool. The compressive strength testing tool comprises a base and a supporting assembly. The supporting assembly comprises two supporting pieces arranged in a spaced mode, and the two supporting pieces are connected with the base. Each supporting piece comprises a horizontal supporting part and a concave supporting part, the horizontal supporting parts and the concave supporting parts on the two supporting pieces are correspondingly arranged, the horizontal supporting parts are located at the same horizontal height, and the horizontal height of the two ends of each concave supporting part is larger than that of the middle of the concave supporting part. According to the compressive strength testing tool, the horizontal supporting part or the concave supporting part can be selectively used for supporting according to the shape of the tested object, so that the compressive strength testing tool can adapt to the tested objects in different shapes, the additional tool requirement is reduced, and more application scenes are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical performance testing tooling, in particular to a compressive strength testing tooling. Background Art

[0002] Magnetic cores are a crucial electrical engineering material. Their high permeability and low resistance make them widely used in electromagnetic induction, transformer manufacturing, and electromagnetic interference suppression. With the continuous development and changes in the market, the shapes, sizes, and materials of magnetic core products are becoming increasingly diverse. However, the compressive strength requirements of magnetic cores during use have led to the need for compressive strength testing of various magnetic core products to ensure their performance during use.

[0003] Conventional compressive strength testing tools consist of an indenter and a support assembly. The indenter breaks the object between the support assembly to test its compressive strength. However, to stably support the object, the support assembly must conform to the surface of the object. Therefore, it can only support rectangular or cylindrical objects. Testing different shaped objects requires changing different tooling, increasing testing costs. Utility Model Content

[0004] The purpose of the utility model is to provide a compressive strength testing tool to adapt to tested objects with different shapes and sizes.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A compressive strength testing tool, comprising:

[0007] base;

[0008] A support assembly, wherein the support assembly includes two support members arranged at intervals, and the two support members are respectively connected to the base. The support member includes a horizontal support portion and a recessed support portion. The horizontal support portion and the recessed support portion on the two support members are arranged correspondingly, and the horizontal support portions are at the same horizontal height. The horizontal heights at both ends of the recessed support portion are higher than the horizontal height of the middle portion.

[0009] Preferably, the two support members are fixed to the base by adjustable fasteners, and adjusting the fasteners and rotating the two support members can interchange the positions of the horizontal support portion and the recessed support portion; wherein the horizontal support portion and the recessed support portion on the two support members are arranged in a direction from one support member toward the other support member.

[0010] Preferably, the support member is provided with a locking surface, which is concavely arranged between the horizontal support portion and the recessed support portion, and the fastener can fix the support member to the base by locking the locking surface.

[0011] Preferably, the fastener is a threaded connection portion, which passes through the geometric center of the locking surface. When the threaded connection portion releases the fixation of the support member, the support member can rotate around the threaded connection portion.

[0012] Preferably, the recessed support portion includes two line segment support portions, and both line segment support portions extend from the middle portion of the recessed support portion to both sides of the recessed support portion to the end portion of the recessed support portion.

[0013] Preferably, the horizontal support portion and the recessed support portion are both provided with an outwardly protruding arc-shaped support surface.

[0014] Preferably, a sliding groove is provided on the upper surface of the base, and the support member is slidably connected to the sliding groove.

[0015] Preferably, a sliding block is provided in the sliding groove, and the supporting member is provided with an avoidance hole, and the fastener passes through the avoidance hole and is connected to the sliding block.

[0016] Preferably, the cross-sectional area of the slot opening of the chute is smaller than the cross-sectional area of the bottom of the chute, the slider is arranged at the bottom of the chute and the largest cross-sectional area of the slider is larger than the cross-sectional area of the slot opening.

[0017] Preferably, the slide groove is a T-shaped groove, the slider is a T-shaped block, one end of the T-shaped block with a larger cross-sectional area is clamped to the bottom of the T-shaped groove, and the other end of the T-shaped block can be connected and fixed to the fastener.

[0018] Beneficial effects: The compressive strength testing tool provided by the present invention includes a base and a support assembly. The support assembly includes two support members arranged at intervals, and the two support members are respectively connected to the base. The support member includes a horizontal support portion and a recessed support portion, and the horizontal support portion and the recessed support portion on the two support members are correspondingly arranged, the horizontal support portion is at the same horizontal height, and the horizontal heights at both ends of the recessed support portion are higher than the horizontal height of the middle portion. The compressive strength testing tool can selectively use the horizontal support portion or the recessed support portion for support according to the shape of the object to be tested, so it can adapt to objects to be tested of different shapes, reducing the need for additional tooling, and having more application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the compressive strength testing tool provided by the present invention;

[0020] Figure 2 This is a front view of the compressive strength testing tool provided by the present invention;

[0021] Figure 3 This is a side view of the compressive strength testing tool provided by the present invention;

[0022] Figure 4 It is a top view of the compressive strength testing tool provided by the utility model.

[0023] In the figure: 1-pressing head; 2-base; 3-supporting member; 31-horizontal supporting portion; 32-recessed supporting portion; 33-locking surface; 4-fastener; 5-sliding groove; 6-slider. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0025] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0028] like Figures 1-4 As shown, this embodiment provides a compressive strength testing tool, which includes a pressure head 1, a base 2 and a support assembly. The base 2 is arranged below the pressure head 1, and the pressure head 1 can be raised and lowered; the support assembly includes two support members 3 arranged at intervals, and the two support members 3 are respectively located on both sides of the pressure head 1. When using the strength testing tool, the object to be tested is placed on the support assembly, and the support members 3 located on both sides of the pressure head 1 respectively provide a part of the supporting force for the object to be tested. When the pressure head 1 descends, it can contact the object to be tested between the two support members 3 to provide pressure, and then break the object to be tested to obtain the compressive performance parameters of the object to be tested. It can also be understood that in some embodiments, the compressive strength testing tool may also only include the base 2 and the support assembly, so as to be applied to a press device including the pressure head 1.

[0029] Specifically, support member 3 includes a horizontal support portion 31 and a recessed support portion 32. The horizontal support portion 31 and the recessed support portion 32 are positioned correspondingly on both support members 3. The horizontal support portion 31 is at the same height, while the recessed support portion 32 is positioned at higher heights at both ends than in the middle. During the compressive strength test, the object under test can be selectively placed on either the corresponding horizontal support portion 31 or the recessed support portion 32 on either support member 3, depending on its shape. The horizontal support portion 31 is at the same horizontal height to form line contact or surface contact with the object to be measured, thereby facilitating the stable placement of the rectangular object to be measured on the horizontal support portion 31 and preventing the object to be measured from sliding from a high place to a low place; the heights of the two ends of the recessed support portion 32 are higher than the middle part, and when a cylindrical or elliptical object to be measured is placed on the recessed support portion 32, at least one contact position can be generated on each side of the middle part of the recessed support portion 32, and the two contact positions can remain symmetrical relative to the middle part of the recessed support portion 32, so that the force on the object to be measured is more uniform and stable, preventing the object to be measured from sliding or twisting when under pressure, affecting the detection results.

[0030] Specifically, the two supports 3 are secured to the base 2 by adjustable fasteners 4. Specifically, the fasteners 4 selectively lock the supports 3 to the base 2. When the fasteners 4 unlock the supports 3, the supports 3 can change position relative to the base 2. The horizontal support portions 31 and recessed support portions 32 on the two supports 3 are arranged in a direction from one support 3 toward the other. During testing, each support 3 has a horizontal support portion 31 at the end that approaches the other, and a recessed support portion 32 at the end that moves away from the other. Both the horizontal support portion 31 and the recessed support portion 32 extend perpendicular to the direction in which the two supports 3 approach or move away from each other. Specifically, the direction in which the two supports 3 approach or move away from each other corresponds to the length of the object being tested when placed on the supports 3. That is, both support portions are arranged perpendicular to the length of the object being tested, facilitating contact between the support portions and the sidewalls of the object being tested and preventing the support portions from providing support force along the length of the object being tested, thereby preventing deformation of the object under pressure. It can be understood that during the test, the corresponding relationship between the horizontal support parts 31 and the recessed support parts 32 on the two support members 3 can be adjusted as needed. When the object to be measured is a body of uniform cross-section, it can be adjusted so that the horizontal support parts 31 or the recessed support parts 32 on the two support members 3 are set close to each other; when the object to be measured is a body of non-uniform cross-section, it can be adjusted so that the horizontal support part 31 on one support member 3 and the recessed support part 32 on the other support member 3 are set close to each other.

[0031] In some other embodiments, the two support members 3 may also be directly fixed to the base 2, or the two support members 3 and the base 2 may be integrally formed, or only one support member 3 may be directly fixed to the base 2 or integrally formed with the base 2, and the position of the other support member 3 relative to the base 2 is not fixed. The fixing method may be welding, clamping, etc. At this time, the horizontal support portion 31 and the recessed support portion 32 may be arranged along the direction in which the two support members 3 are close to each other or away from each other. The horizontal support portion 31 may be provided at one end where the two support members 3 are close to each other, and the recessed support portion 32 may be provided at one end where the two support members 3 are away from each other. At the same time, the overall horizontal height of the horizontal support portion 31 is lower than the horizontal height of the recessed support portion 32. At this time, the compressive strength test fixture may be applicable to rectangular objects to be measured with a shorter length and cylindrical or elliptical objects to be measured with a longer length. Alternatively, the horizontal support portion 31 can be positioned at the end of the two support members 3 that is spaced apart from each other, while the recessed support portion 32 is positioned at the end of the two support members 3 that is closer to each other. In this case, the compressive strength test fixture is suitable for both long rectangular objects and short cylindrical or elliptical objects. Furthermore, the horizontal support portion 31 and the recessed support portion 32 can be positioned side by side. In this case, the length of the indenter 1 must be no less than the sum of the lengths of the horizontal support portion 31 and the recessed support portion 32.

[0032] In other embodiments, the horizontal support portions 31 and the recessed support portions 32 on the two support members 3 may also be connected and arranged in a direction perpendicular to one support member 3 toward the other support member 3. In this embodiment, the connection method between the two support members 3 and the base 2 is not limited thereto, and the number of the horizontal support portion 31 and the recessed support portion 32 on one support member 3 may be not only one but also more than one.

[0033] It is understandable that adjusting the fastener 4 and rotating the two support members 3 can interchange the positions of the horizontal support portion 31 and the recessed support portion 32. Specifically, the end of the two support members 3 that is closer to each other is the specific working end. When the horizontal support portion 31 is located at the working end, the compressive strength test fixture can test a rectangular object under test; when the recessed support portion 32 is located at the working end, the compressive strength test fixture can test a cylindrical or elliptical object under test. After a compressive strength test is completed, when it is necessary to test an object under test of a different shape, it is only necessary to adjust the fastener 4 to release the lock on the support member 3, and then rotate the two support members 3 to interchange the positions of the horizontal support portion 31 and the recessed support portion 32 to change the support portion at the working end, thereby meeting the need to use the same compressive strength test fixture to test objects with diverse shapes. Furthermore, the objects under test tested using the compressive strength test fixture are magnetic cores of different shapes and sizes.

[0034] In some other embodiments, the bottom of the support member 3 may be rectangular, and the horizontal support portion 31 and the recessed support portion 32 are arranged on two adjacent sides of the rectangle. After the fastener 4 releases the lock on the support member 3, the support member 3 only needs to rotate ninety degrees on the base 2 around its own central axis perpendicular to the base 2 to complete the interchange of the positions of the two support portions.

[0035] Furthermore, the support member 3 is provided with a locking surface 33 , which is concavely arranged between the horizontal support portion 31 and the recessed support portion 32 , and the fastener 4 can fix the support member 3 to the base 2 by locking the locking surface 33 .

[0036] Specifically, after the fastener 4 releases the lock on the support member 3, the support member 3 can rotate 180 degrees on the base 2 around its own central axis perpendicular to the base 2, and the positions of the horizontal support portion 31 and the recessed support portion 32 are interchanged.

[0037] In some other embodiments, the support member 3 can also be an L-shaped structural member, and the horizontal support portion 31 and the recessed support portion 32 are respectively arranged at the head and tail ends of the L-shaped structural member, with the support portions with higher horizontal heights close to each other, and the other support portions far away from each other; the fastener 4 can be fixed on the plane where the L-shaped structural member contacts the base 2, and after the contact locks the L-shaped structural member, the other plane of the L-shaped structural member can contact and fix the base 2, thereby changing the support portion at the working end.

[0038] Furthermore, fastener 4 is a threaded connection portion that passes through the geometric center of locking surface 33. When the threaded connection portion releases its fixation on support member 3, support member 3 can rotate about the threaded connection portion. Specifically, fastener 4 is a bolt. Support member 3 is provided with a clearance hole. The threaded end of the bolt passes through the clearance hole from top to bottom for threaded connection. The lower surface of the bolt end can abut against locking surface 33, thereby generating a locking effect and securing support member 3 to base 2. Loosening the bolt releases the lock on support member 3. At this time, support member 3 can rotate about the threaded connection portion to exchange the horizontal support portion 31 with the recessed support portion 32.

[0039] In some other embodiments, the fastener 4 can also be a rigid C-shaped clamp, the surface of the recessed portion of the clamp can fit with the locking surface 33, and the clamps at both ends of the clamp can extend to the bottom of the support member and clamp the base 2. At this time, the clamps are relatively fixed to the base 2, and the recessed portion of the clamp is relatively fixed to the locking surface 33, that is, the support member 3 is fixed to the base 2 as a whole. After loosening the clamp, the support member 3 and the base 2 are released from the fixed relationship, and the support member 3 can be rotated to change the support part at the working end.

[0040] Specifically, in this embodiment, the recessed support portion 32 includes two line segment support portions, and both line segment support portions extend from the middle of the recessed support portion 32 to both sides of the recessed support portion 32 to the ends of the recessed support portion 32. That is, the recessed support portion 32 as a whole can be regarded as a V-shaped structure with a relatively large opening, and is arranged symmetrically with respect to the middle of the recessed support portion 32. When a cylindrical or elliptical magnetic core is placed on the recessed support portion 32, the line segment support portions on both sides can respectively generate a support position on both sides of the magnetic core, that is, two support positions can be generated on both sides of the magnetic core. When the magnetic core is subjected to downward pressure, due to the presence of the support positions on both sides, the magnetic core will not deviate radially, and can be more stably supported by the support member 3, thereby ensuring the accuracy of the compressive strength test.

[0041] In some other embodiments, the recessed support portion 32 may also be an arc-shaped support portion. The arc-shaped support portion may be formed by arcs with the same curvature radius, or may be formed by multiple arcs with different curvature radii. The arc-shaped support portion may be symmetrically arranged along the middle of the recessed support portion 32, and the arc-shaped structures on both sides of the middle may be convexly arranged in a direction close to each other, or concavely arranged in a direction away from each other. The recessed support portion 32 may also not be symmetrically arranged along the middle, as long as the concave shapes of the arc-shaped support portions located on the two support members 3 correspond to each other, and can jointly support magnetic cores in shapes such as cylindrical or ellipsoidal.

[0042] Furthermore, both the horizontal support portion 31 and the recessed support portion 32 are provided with an outwardly protruding arc-shaped support surface. The arc-shaped support surface has an R-shaped structure along the cross-sectional shape perpendicular to the extension direction of the support portion. Specifically, the arc-shaped support surfaces on the horizontal support portion 31 and the recessed support portion 32 are in contact with the magnetic core. When the rectangular magnetic core is placed on the horizontal support portion 31, the contact between the magnetic core and the arc-shaped support surface of the horizontal support portion 31 is a line contact. Compared with setting the horizontal support portion 31 as a planar structure, the contact area between the magnetic core and the support member 3 is reduced, preventing excessive contact area from hindering the deformation of the magnetic core, and better meeting the pressure test requirements for the magnetic core. The arc-shaped support surface of the recessed support portion 32 has the same purpose, which can make the magnetic core and the arc-shaped support surface have only two support points in contact, reducing the contact area between the magnetic core and the support member 3, and meeting the pressure test requirements.

[0043] Specifically, in this embodiment, a slide groove 5 is provided on the upper surface of the base 2, and the support member 3 is slidably connected to the slide groove 5. Specifically, the length direction of the slide groove 5 is set along the direction in which the two support members 3 approach each other or move away from each other, and the two support members 3 can move along the length direction of the slide groove 5 to approach or move away from each other. At this time, the distance between the support parts on the support member 3 will also change. When the two support members 3 approach each other, the support part at the working end can provide support for the smaller magnetic core. When the two support members 3 move away from each other, the support part at the working end can provide support for the larger magnetic core. That is, the setting of the slide groove 5 enables the compressive strength test tool provided in this embodiment to perform compressive strength testing on magnetic cores of different sizes, thereby expanding its scope of use.

[0044] Furthermore, a slider 6 is provided in the chute 5, and a avoidance hole is provided in the support member 3, and the fastener 4 is connected to the slider 6 through the avoidance hole. Specifically, the fastener 4 can be a bolt, and a threaded connection hole is provided at the upper end of the slider 6. The lower end of the bolt can be threadedly connected to the slider 6, and then relatively fixed to the slider 6, so that the support member 3 can drive the slider 6 and slide along the length direction of the chute 5. In some other embodiments, the lower end of the fastener 4 can also be engaged with the slider 6 instead of being threaded. Furthermore, the slider 6 is respectively in contact with the two side walls in the width direction of the chute 5. At this time, the support member 3 can only slide with the slider 6 along the length direction of the chute 5, and cannot produce radial movement, thereby avoiding the misalignment of the support parts on the two support members 3, and being unable to jointly support the magnetic core. In some other embodiments, the inner diameter of the slot of the slide groove 5 can be slightly larger than the outer diameter of the support member 3, and the bottom of the support member 3 can be set in the slide groove 5 and move along the slide groove 5; or the inner diameter of the slot of the slide groove 5 can be smaller than the outer diameter of the bottom of the support member 3, and a protrusion is provided at the bottom of the support member 3 to fit into the slot of the slide groove 5, so that the support member 3 can slide along the slide groove 5.

[0045] Furthermore, the cross-sectional area of the notch of the chute 5 is smaller than the cross-sectional area of the bottom of the chute 5, and the slider 6 is arranged at the bottom of the chute 5 and the largest cross-sectional area of the slider 6 is larger than the cross-sectional area of the notch. The design of the chute 5 and the slider 6 ensures that the slider 6 will not be separated from the chute 5 from the upper part of the chute 5, thereby causing the support member 3 to lose its fixed relationship with the base 2. Specifically, the upper surface of the slider 6 abuts against the lower surface of the notch of the chute 5. At this time, after the fastener 4 and the slider 6 are relatively fixed, the support member 3 cannot be lifted in the vertical direction and thus away from the base 2, thereby ensuring the fixing effect of the fastener 4 on the support member 3. Specifically, the chute 5 passes through the base 2 in the length direction, and the slider 6 can enter the chute 5 from the end of the chute 5, reducing the difficulty of production.

[0046] Furthermore, the chute 5 is a T-shaped slot, and the slider 6 is a T-shaped block. The end of the T-shaped block with a larger cross-sectional area is snapped onto the bottom of the T-shaped slot, and a threaded connection hole is provided at the other end of the T-shaped block. Specifically, the T-shaped slot allows the T-shaped block to slide precisely within the slot, meaning that the T-shaped block will not experience radial wobble within the chute 5, thereby ensuring that the fastener 4 and the slider 6 are relatively fixed to each other and can effectively secure the support member 3. In addition, the end of the T-shaped block with a smaller cross-sectional area is closer to the support member 3, facilitating its connection with the lower end of the fastener 4. This also increases the maximum contact area between the support member 3 and the slider 6, thereby enhancing the tightness of the contact portion between the two when threaded.

[0047] Specifically, in this embodiment, the base 2 is provided with scale lines along the direction in which the two support members 3 are closer to or farther away from each other. In the compressive strength test, the indenter 1 is provided in the middle position of the two support members 3 to ensure that the three external forces acting on the magnetic core: the two upward supporting forces provided by the support portion and the downward pressure provided by the indenter 1 are evenly distributed, which is more in line with the operating specifications during the compressive strength test. Furthermore, the scale lines can be symmetrically arranged along the center position of the base 2, and the indenter 1 is provided directly above the center position of the base 2. At this time, it is easier to adjust the position of the support members 3 so that the two support members 3 are in corresponding positions.

[0048] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A compressive strength testing tool, characterized in that: include: Base (2); A support assembly, the support assembly comprising two spaced support members (3), the two support members (3) being connected to the base (2) respectively, the support member (3) comprising a horizontal support portion (31) and a recessed support portion (32), the horizontal support portion (31) and the recessed support portion (32) on the two support members (3) being arranged correspondingly, the horizontal support portion (31) being at the same horizontal height, and the horizontal heights of the two ends of the recessed support portion (32) being higher than the horizontal height of the middle portion.

2. The compressive strength testing tool according to claim 1, characterized in that: The two support members (3) are fixed to the base (2) by an adjustable fastener (4), and the positions of the horizontal support portion (31) and the recessed support portion (32) can be interchanged by adjusting the fastener (4) and rotating the two support members (3); wherein the horizontal support portion (31) and the recessed support portion (32) on the two support members (3) are arranged in a direction from one support member (3) to the other support member (3).

3. The compressive strength testing tool according to claim 2, characterized in that: The support member (3) is provided with a locking surface (33), and the locking surface (33) is concavely arranged between the horizontal support portion (31) and the recessed support portion (32). The fastener (4) can fix the support member (3) on the base (2) by locking the locking surface (33).

4. The compressive strength testing tool according to claim 3, characterized in that: The fastener (4) is a threaded connection portion, the threaded connection portion passes through the geometric center of the locking surface (33), and when the threaded connection portion releases the fixation of the support member (3), the support member (3) can rotate around the threaded connection portion.

5. The compressive strength testing tool according to claim 1, characterized in that: The recessed support portion (32) comprises two line segment support portions, each of which extends from the middle of the recessed support portion (32) to both sides of the recessed support portion (32) to the end of the recessed support portion (32).

6. The compressive strength testing tool according to claim 5, characterized in that: The horizontal support portion and the recessed support portion (32) are both provided with an outwardly convex arc-shaped support surface.

7. The compressive strength testing tool according to any one of claims 2 to 4, characterized in that: A sliding groove (5) is provided on the upper surface of the base (2), and the support member (3) is slidably connected to the sliding groove (5).

8. The compressive strength testing tool according to claim 7, characterized in that: A sliding block (6) is provided in the sliding groove (5), a relief hole is provided in the supporting member (3), and the fastener (4) passes through the relief hole and is connected to the sliding block (6).

9. The compressive strength testing tool according to claim 8, characterized in that: The cross-sectional area of the slot opening of the chute (5) is smaller than the cross-sectional area of the slot bottom of the chute (5); the slider (6) is arranged at the slot bottom of the chute (5) and the largest cross-sectional area of the slider (6) is larger than the cross-sectional area of the slot opening.

10. The compressive strength testing tool according to claim 9, characterized in that: The slide groove (5) is a T-shaped groove, and the slider (6) is a T-shaped block. One end of the T-shaped block having a larger cross-sectional area is clamped to the bottom of the T-shaped groove, and the other end of the T-shaped block can be connected and fixed to the fastener (4).

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