Concrete compressive strength testing machine

Abstract

The invention discloses a concrete compressive strength testing machine, and relates to the technical field of concrete compressive strength detection.The concrete compressive strength testing machine comprises a base, a center groove is formed in the middle of the top of the base, and supporting blocks are fixedly installed on the two sides of the top of the base; and the clamping assembly is used for positioning and clamping the concrete detection test piece. According to the concrete compressive strength testing machine, when concrete is subjected to strength detection, a worker places a concrete detection test piece in a clamping assembly, so that a concrete raw material is erected between a detection stamping part and a bearing assembly, then the worker starts a hydraulic machine, and the hydraulic machine drives the detection stamping part to move downwards; the concrete test piece placed in the clamping assembly is stamped, so that the compressive strength of concrete is detected, and when the concrete test piece is fractured due to stamping, chippings of the concrete test piece fall to the position above the bearing assembly, so that the fractured concrete is collected, and the situation that the chippings need to be cleaned frequently is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of concrete compression resistance detection, in particular to a concrete compression strength testing machine. Background Art

[0002] Concrete refers to an artificial stone made by mixing cement as the main cementing material with water, sand, gravel, and if necessary, chemical admixtures and mineral admixtures in appropriate proportions, and then evenly mixing, compacting, forming, and curing to harden. When building a house, concrete is an indispensable material used to strengthen the strength of the entire building. However, after the concrete is poured, dried, and hardened, its strength needs to be inspected and tested. The concrete strength testing device is used to test the compressive strength of concrete and is the most widely used testing device for on-site testing.

[0003] Currently, the testing machine applies pressure through a hydraulic system. The hydraulic pump delivers hydraulic oil to the working cylinder, causing the piston to rise, thereby applying uniform pressure to the concrete specimen placed between the upper and lower pressure plates. When the pressure reaches a certain level, the concrete specimen begins to deform, and the testing machine records the pressure and deformation data through sensors. A large amount of debris is generated during the concrete compressive strength test, so the collection tank needs to be cleaned frequently, and the debris on the inclined plate needs to be cleaned manually, which reduces work efficiency. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A concrete compressive strength testing machine comprises a base, a center groove is opened in the middle of the top of the base, and support blocks are fixedly installed on both sides of the top of the base; A clamping assembly, which is used for positioning and clamping a concrete test piece, a hydraulic press is fixedly installed on the top of the clamping assembly, and support rods are fixedly installed on both sides of the bottom of the hydraulic press; Testing stamping parts, which are used for stamping testing of concrete specimens; A bearing assembly, a bottom support frame being fixedly mounted on the bottom of the bearing assembly; The bottom support frame is fixedly installed inside the central groove, the bearing assembly is fixedly installed between the top of the base through the bottom support frame, the support rod is fixedly installed inside the support block, the detection stamping piece is erected on the top of the bearing assembly through the support rod, the clamping assembly is fixedly installed inside the bearing assembly, and the clamping assembly is fixedly adapted to the base; when performing strength testing on concrete, the staff places the concrete inspection test piece inside the clamping assembly so that the concrete raw material is erected between the inspection stamping piece and the bearing assembly, and then the staff starts the hydraulic press so that the hydraulic press drives the inspection stamping piece downward to punch the concrete specimen placed in the clamping assembly to test the compressive strength of the concrete. When the concrete specimen is broken by the punching, the concrete specimen debris falls to the top of the bearing assembly to collect the broken concrete, avoiding the need for frequent cleaning of the debris.

[0005] The detection stamping part includes a positioning plate, a stamping rod is fixedly installed at the bottom of the positioning plate, a stamping head is sleeved at the bottom of the stamping rod, a circular arc cover is sleeved on the outer surface of the stamping rod, and adjustment plates are fixedly installed on both sides of the outer surface of the circular arc cover. Two groups of adjustment plates are provided, and the two groups of adjustment plates are symmetrically arranged with the stamping rod as the center. The staff starts the hydraulic press, so that the hydraulic press drives the stamping rod to move, and the stamping head stamps the concrete specimen. The side support blocks are arranged on both sides of the concrete specimen. The inner rotating plate and the adjustment plate rotate in the side support blocks under the influence of the displacement of the side support blocks. When the stamping rod is displaced to stamp the concrete raw material, the side support blocks and the concrete specimen are counteracted, increasing the surface contact between the detection stamping part and the concrete specimen to improve the stability of the stamping head during stamping.

[0006] Preferably, an inner rotating plate is fixedly mounted on the surface of the arc cover close to the adjustment plate, a rotating shaft is rotatably mounted between the opposite surfaces of the adjustment plate and the inner rotating plate, and a side support block is rotatably mounted on the outer surface of the rotating shaft. After the concrete specimen is punched and fractured, the punch head punches downward to the surface of the bearing assembly, and at this time the side support block moves down to the top of the extension plate, thereby providing buffer support for the falling punch head. When the punch head collides with the broken concrete specimen when it goes down, the punch rod is bent by force, which affects the service life of the equipment.

[0007] Preferably, the positioning plate is fixedly connected to the hydraulic press, the punching rod and the bearing assembly are arranged on the same central axis, the side support block is adapted to the bearing assembly, and the punching head is adapted to concrete punching.

[0008] Preferably, the clamping assembly includes a mounting plate, a connection block is fixedly mounted below the outer surface of the mounting plate, positioning blocks are fixedly mounted on both sides of the outer surface of the connection block, a support plate is fixedly mounted on the bottom of the positioning block, a clamping block is fixedly mounted on the outer surface of the positioning block, a positioning clamp group is fixedly mounted on the top of the outer surface of the mounting plate, and a turning handle is threadedly mounted on the top of the positioning clamp group. The staff rotates the turning handle to adjust the position of the positioning clamp group, so that the concrete test piece is clamped inside the positioning clamp group, so that both ends of the concrete test piece are limited and mounted above the bearing assembly. When the punch head punches the concrete test piece, the concrete test piece is in a vacant state, and the concrete test piece with poor compressive strength will be broken by the punching. At this time, part of the broken concrete falls on the top of the bearing assembly to improve the clamping strength of the concrete test piece and avoid the irregular concrete test piece from falling during the compression test.

[0009] Preferably, the mounting plate is fixedly mounted on the top side of the base, a bottom support seat is fixedly mounted on the bottom of the positioning clamp group, a through shaft is fixedly mounted on the bottom of the bottom support seat, and the bottom support seat penetrates the bearing assembly and extends to the interior of the cavity of the center groove.

[0010] Preferably, the positioning clamp group includes a connecting block, a clamp block and a bottom block are fixedly mounted on the surface of the connecting block, a telescopic rod is movably mounted between the clamp block and the bottom block, a clamp plate is fixedly mounted on the outer surface of the connecting block, a slot plate is fixedly mounted on the outer surface of the bottom block, and the clamp plate is adapted to the slot plate. The staff rotates the handle to displace the clamp block on the surface of the telescopic rod, and the receiving block and the lower pressing block are both configured as serrated structures. When the clamp block is displaced, the concrete specimen clamped between the receiving block and the lower pressing block is clamped to clamp and fix the concrete specimen, thereby preventing the concrete specimen from shifting during strength testing.

[0011] Preferably, the clamping block is fixedly mounted on the top of the clamping block, a pressing block is fixedly mounted on the bottom of the clamping block, a receiving clamping block is fixedly mounted on the top of the slot plate, and the pressing block is adapted to the receiving clamping block.

[0012] Preferably, the bearing assembly includes a chassis, a bottom plate is fixedly installed at the bottom of the chassis, arc grooves are formed on both sides of the outer surface of the bottom plate, the arc grooves are adapted to the outer surface of the through-shaft, and the chassis is fixedly installed in the middle of the top of the bottom support frame.

[0013] Preferably, a positioning groove is fixedly installed on the top of the chassis, an extension plate is fixedly installed inside the positioning groove, a through groove is opened inside the extension plate, and the through groove is sleeved on the outer surface of the through shaft.

[0014] Preferably, a stamping plate is fixedly installed in the middle of the positioning groove, and an extension plate is fixedly installed on the surface of the positioning groove away from the extension plate. Two extension plates are provided, and the two extension plates are symmetrically arranged with the stamping plate as support. The through groove is sleeved on the surface of the through shaft to position the positioning clamp group. When the concrete specimen is stressed and fractured, the punch head moves down to the top of the punch plate, and the side support block moves down to the surface of the extension plate to protect and limit the punch head.

[0015] The present invention provides a concrete compressive strength testing machine, which has the following beneficial effects: 1. The concrete compressive strength testing machine, when testing the strength of concrete, the staff places the concrete test piece inside the clamping component, so that the concrete raw material is set between the test stamping part and the load-bearing component, and then the staff starts the hydraulic press, which drives the test stamping part downward to punch the concrete test piece placed in the clamping component to test the compressive strength of the concrete. When the concrete test piece is broken by the punching, the concrete test piece debris falls to the top of the load-bearing component to collect the broken concrete, avoiding the need for frequent cleaning of the debris.

[0016] 2. The concrete compressive strength testing machine is started by a staff member, so that the hydraulic press drives the punch rod to move, and the punch head punches the concrete specimen. The side support blocks are arranged on both sides of the concrete specimen. The inner rotating plate and the adjusting plate rotate in the side support blocks under the influence of the displacement of the side support blocks. When the punch rod is displaced to punch the concrete raw material, the side support blocks and the concrete specimen are abutted, thereby increasing the surface contact between the test stamping part and the concrete specimen, so as to improve the stability of the punch head during punching.

[0017] 3. This concrete compressive strength testing machine, after the concrete specimen is punched and broken, the punch head punches downward to the surface of the load-bearing component. At this time, the side support block moves down to the top of the extension plate, thereby providing buffer support for the falling punch head. When the punch head goes down, it collides with the broken concrete specimen, causing the punch rod to bend under force, affecting the service life of the equipment.

[0018] 4. The concrete compressive strength testing machine is configured such that the staff rotates the handle to adjust the position of the positioning clamp group, so that the concrete test piece is clamped inside the positioning clamp group, so that both ends of the concrete test piece are limited and erected above the bearing component. When the punch head punches the concrete test piece, the concrete test piece is in a suspended state, and the concrete test piece with poor compressive strength will break when being pressed. At this time, part of the broken concrete falls on the top of the bearing component to improve the clamping strength of the concrete test piece and avoid the falling of irregular concrete test pieces during compression testing.

[0019] 5. The concrete compressive strength testing machine is a machine in which a worker turns a handle to displace the clamping block on the surface of the telescopic rod. Both the receiving block and the pressing block are arranged as serrated structures. When the clamping block is displaced, the concrete specimen clamped between the receiving block and the pressing block is clamped to fix the concrete specimen and avoid displacement of the concrete specimen during strength testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of a concrete compressive strength testing machine of the present invention; Figure 2 It is a schematic diagram of the structure of the bearing assembly of the present invention; Figure 3 This is a schematic diagram of the connection structure between the detection stamping part and the bearing assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the stamping parts to be detected according to the present invention; Figure 5 It is a schematic diagram of the connection structure between the clamping assembly and the clamping assembly of the present invention; Figure 6 It is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 7 It is an enlarged structural schematic diagram of the positioning clamp assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the positioning clamp assembly of the present invention; Fig. 9 It is a schematic diagram of the structure of the bearing assembly of the present invention.

[0021] In the figure: 1, hydraulic press; 2, support rod; 3, clamping assembly; 31, positioning clamp group; 311, clamping block; 312, clamping plate; 313, connecting block; 314, slot plate; 315, bottom block; 317, telescopic rod; 318, receiving block; 319, lower pressure block; 32, positioning block; 33, bottom support seat; 34, through shaft; 35, mounting plate; 36, connecting block; 37, clamping block; 38, support plate; 39, turning handle; 4 , base; 5, bearing assembly; 51, extension plate; 52, stamping plate; 53, positioning groove; 54, through groove; 55, arc groove; 56, chassis; 57, extension plate; 58, bottom plate; 6, support block; 7, detection stamping parts; 71, adjustment plate; 72, side support block; 73, rotating shaft; 74, stamping rod; 75, positioning plate; 76, inner rotating plate; 77, stamping head; 78, arc cover; 8, bottom support frame; 9, center groove. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0023] The first embodiment, as Figures 1 to 4 As shown, the present invention provides a technical solution: a concrete compressive strength testing machine, comprising a base 4, a center groove 9 is opened in the middle of the top of the base 4, and support blocks 6 are fixedly installed on both sides of the top of the base 4; A clamping assembly 3, which is used for positioning and clamping a concrete test piece, a hydraulic press 1 is fixedly installed on the top of the clamping assembly 3, and support rods 2 are fixedly installed on both sides of the bottom of the hydraulic press 1; A detection stamping part 7, which is used for stamping detection of concrete specimens; A bearing assembly 5, a bottom support frame 8 is fixedly mounted on the bottom of the bearing assembly 5; The bottom support frame 8 is fixedly installed inside the central groove 9, the bearing component 5 is fixedly installed between the tops of the base 4 through the bottom support frame 8, the support rod 2 is fixedly installed inside the support block 6, the detection stamping part 7 is erected on the top of the bearing component 5 through the support rod 2, the clamping component 3 is fixedly installed inside the bearing component 5, and the clamping component 3 is fixedly adapted to the base 4; when performing strength testing on concrete, the staff places the concrete inspection test piece inside the clamping component 3, so that the concrete raw material is erected between the inspection stamping part 7 and the bearing component 5, and then the staff starts the hydraulic press 1 so that the hydraulic press 1 drives the inspection stamping part 7 downward to punch the concrete specimen placed in the clamping component 3 to test the compressive strength of the concrete. When the concrete specimen is broken by the punching, the concrete specimen debris falls to the top of the bearing component 5 to collect the broken concrete, avoiding the need for frequent cleaning of the debris.

[0024] The bearing assembly 5 includes a chassis 56, a bottom plate 58 is fixedly installed at the bottom of the chassis 56, and arc grooves 55 are formed on both sides of the outer surface of the bottom plate 58. The arc grooves 55 are adapted to the outer surface of the through-shaft 34. The chassis 56 is fixedly installed in the middle of the top of the bottom support frame 8.

[0025] A positioning groove 53 is fixedly installed on the top of the chassis 56 , an extension plate 51 is fixedly installed inside the positioning groove 53 , a through groove 54 is opened inside the extension plate 51 , and the through groove 54 is sleeved on the outer surface of the through shaft 34 .

[0026] A punching plate 52 is fixedly installed in the middle of the positioning groove 53, and an extension plate 57 is fixedly installed on the surface of the positioning groove 53 away from the extension plate 51. Two extension plates 57 are provided, and the two extension plates 57 are symmetrically arranged with the punching plate 52 as support. The through groove 54 is sleeved on the surface of the through shaft 34 to position the positioning clamp group 31. When the concrete specimen is subjected to force and fractures, the punch head 77 moves down to the top of the punching plate 52, and the side support block 72 moves down to the surface of the extension plate 57 to protect and limit the punch head 77.

[0027] The second embodiment is based on the first embodiment. Figures 5 to 8 As shown, the detection stamping part 7 includes a positioning plate 75, a stamping rod 74 is fixedly installed at the bottom of the positioning plate 75, a stamping head 77 is sleeved at the bottom of the stamping rod 74, an arc cover 78 is sleeved on the outer surface of the stamping rod 74, and adjustment plates 71 are fixedly installed on both sides of the outer surface of the arc cover 78. The adjustment plates 71 are provided in two groups, and the two groups of adjustment plates 71 are symmetrically arranged with the stamping rod 74 as the center. The staff starts the hydraulic press 1, so that the hydraulic press 1 drives the stamping rod 74 to move, and the stamping head 77 stamps the concrete specimen. The side support blocks 72 are arranged on both sides of the concrete specimen. The inner rotating plate 76 and the adjustment plate 71 are affected by the displacement of the side support blocks 72 and rotate in the side support blocks 72. When the stamping rod 74 is displaced to stamp the concrete raw material, the side support blocks 72 and the concrete specimen are counteracted, increasing the surface contact between the detection stamping part 7 and the concrete specimen to improve the stability of the stamping head 77 during stamping.

[0028] The inner rotating plate 76 is fixedly mounted on the surface of the arc cover 78 near the adjusting plate 71, and the rotating shaft 73 is rotatably mounted between the opposite surfaces of the adjusting plate 71 and the inner rotating plate 76, and the side support block 72 is rotatably mounted on the outer surface of the rotating shaft 73. After the concrete specimen is punched and broken, the punch head 77 punches downward to the surface of the bearing assembly 5, and at this time, the side support block 72 moves down to the top of the extension plate 51, thereby providing buffer support for the falling punch head 77. When the punch head 77 is moving downward, it collides with the broken concrete specimen, causing the punch rod 74 to bend under force, affecting the service life of the equipment.

[0029] The positioning plate 75 is fixedly connected to the hydraulic press 1 , the punching rod 74 and the bearing assembly 5 are arranged on the same central axis, the side support block 72 is adapted to the bearing assembly 5 , and the punching head 77 is adapted to concrete punching.

[0030] The third embodiment is based on the first and second embodiments. Fig. 9 As shown, the clamping assembly 3 includes a mounting plate 35, a connecting block 36 is fixedly installed at the lower part of the outer surface of the mounting plate 35, positioning blocks 32 are fixedly installed on both sides of the outer surface of the connecting block 36, a support plate 38 is fixedly installed at the bottom of the positioning block 32, a clamping block 37 is fixedly installed on the outer surface of the positioning block 32, a positioning clamp group 31 is fixedly installed on the top of the outer surface of the mounting plate 35, and a turning handle 39 is threadedly installed on the top of the positioning clamp group 31. The staff turns the handle 39 to adjust the position of the positioning clamp group 31, so that the concrete test piece is clamped inside the positioning clamp group 31, so that both ends of the concrete test piece are limited and mounted above the bearing component 5. When the punch head 77 punches the concrete test piece, the concrete test piece is in a suspended state. The concrete test piece with poor compressive strength will be broken when being punched. At this time, part of the broken concrete falls on the top of the bearing component 5, so as to improve the clamping strength of the concrete test piece and avoid the irregular concrete test piece from falling during the compression test.

[0031] The mounting plate 35 is fixedly mounted on the top side of the base 4 , a bottom support seat 33 is fixedly mounted on the bottom of the positioning clamp group 31 , a through shaft 34 is fixedly mounted on the bottom of the bottom support seat 33 , and the bottom support seat 33 penetrates the bearing assembly 5 and extends to the interior of the cavity of the central groove 9 .

[0032] The positioning clamp group 31 includes a connection block 313, on the surface of which a clamp block 311 and a bottom block 315 are fixedly installed, respectively, a telescopic rod 317 is movably installed between the clamp block 311 and the bottom block 315, a clamp plate 312 is fixedly installed on the outer surface of the connection block 313, and a slot plate 314 is fixedly installed on the outer surface of the bottom block 315, and the clamp plate 312 is adapted to the slot plate 314. The staff rotates the turning handle 39 to displace the clamp block 311 on the surface of the telescopic rod 317, and the receiving block 318 and the pressing block 319 are both set to a serrated structure. When the clamp block 311 is displaced, the concrete specimen clamped between the receiving block 318 and the pressing block 319 is clamped to clamp and fix the concrete specimen to avoid displacement of the concrete specimen during strength testing.

[0033] The clamping block 37 is fixedly installed on the top of the clamping block 311 , a pressing block 319 is fixedly installed on the bottom of the clamping block 311 , a receiving clamping block 318 is fixedly installed on the top of the slot plate 314 , and the pressing block 319 is adapted to the receiving clamping block 318 .

[0034] When in use, when conducting a strength test on concrete, the staff places the concrete test piece inside the clamping assembly 3, so that the concrete raw material is set between the test stamping part 7 and the bearing assembly 5, and then the staff starts the hydraulic press 1 so that the hydraulic press 1 drives the test stamping part 7 downward to punch the concrete test piece placed in the clamping assembly 3 to test the compressive strength of the concrete. When the concrete test piece is broken by the punching, the concrete test piece debris falls to the top of the bearing assembly 5 to collect the broken concrete, avoiding the need for frequent cleaning of the debris.

[0035] The staff starts the hydraulic press 1, so that the hydraulic press 1 drives the punch rod 74 to move, and the punch head 77 punches the concrete specimen. The side support blocks 72 are set on both sides of the concrete specimen. The inner rotating plate 76 and the adjustment plate 71 rotate in the side support blocks 72 under the influence of the displacement of the side support blocks 72. When the punch rod 74 is displaced to punch the concrete raw material, the side support blocks 72 are against the concrete specimen, increasing the surface contact between the detection punching part 7 and the concrete specimen to improve the stability of the punch head 77 during punching.

[0036] After the concrete specimen is punched and broken, the punch head 77 punches downward to the surface of the bearing assembly 5. At this time, the side support block 72 moves down to the top of the extension plate 51, thereby providing buffer support for the falling punch head 77. The punch head 77 collides with the broken concrete specimen when descending, causing the punch rod 74 to bend under force, affecting the service life of the equipment.

[0037] The staff turns the handle 39 to adjust the position of the positioning clamp group 31, so that the concrete test piece is clamped inside the positioning clamp group 31, so that both ends of the concrete test piece are limited and mounted above the bearing component 5. When the punch head 77 punches the concrete test piece, the concrete test piece is in a suspended state. The concrete test piece with poor compressive strength will be broken when being punched. At this time, part of the broken concrete falls on the top of the bearing component 5, so as to improve the clamping strength of the concrete test piece and avoid the irregular concrete test piece from falling during the compression test.

[0038] The staff turns the handle 39 to cause the clamping block 311 to move on the surface of the telescopic rod 317. The receiving block 318 and the pressing block 319 are both configured as serrated structures. When the clamping block 311 moves, the concrete specimen clamped between the receiving block 318 and the pressing block 319 is clamped to clamp and fix the concrete specimen to avoid displacement of the concrete specimen during strength testing.

[0039] The through groove 54 is sleeved on the surface of the through shaft 34 to position the positioning clamp group 31. When the concrete specimen is subjected to stress and breaks, the punch head 77 moves down to the top of the punch plate 52, and the side support block 72 moves down to the surface of the extension connecting plate 57 to protect and limit the punch head 77.

[0040] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A concrete compressive strength testing machine, characterized in that: include: A base (4), wherein a central groove (9) is provided in the middle of the top of the base (4), and support blocks (6) are fixedly mounted on both sides of the top of the base (4); A clamping assembly (3), the clamping assembly (3) being used for positioning and clamping a concrete test piece, a hydraulic press (1) being fixedly mounted on the top of the clamping assembly (3), and support rods (2) being fixedly mounted on both sides of the bottom of the hydraulic press (1); A testing stamping part (7), the testing stamping part (7) is used for stamping testing of concrete test pieces; A bearing assembly (5), wherein a bottom support frame (8) is fixedly mounted on the bottom of the bearing assembly (5); The bottom support frame (8) is fixedly mounted inside the central groove (9), the bearing assembly (5) is fixedly mounted between the tops of the base (4) through the bottom support frame (8), the support rod (2) is fixedly mounted inside the support block (6), the detection stamping part (7) is mounted on the top of the bearing assembly (5) through the support rod (2), the clamping assembly (3) is fixedly mounted inside the bearing assembly (5), and the clamping assembly (3) is fixedly matched with the base (4); The detection stamping part (7) comprises a positioning plate (75), a stamping rod (74) is fixedly mounted on the bottom of the positioning plate (75), a stamping head (77) is sleeved on the bottom of the stamping rod (74), an arc cover (78) is sleeved on the outer surface of the stamping rod (74), and adjustment plates (71) are fixedly mounted on both sides of the outer surface of the arc cover (78), and two groups of adjustment plates (71) are provided, and the two groups of adjustment plates (71) are symmetrically arranged with the stamping rod (74) as the center.

2. A concrete compressive strength testing machine according to claim 1, characterized in that: An inner rotating plate (76) is fixedly mounted on a surface of the arc cover (78) on a side close to the adjustment plate (71); a rotating shaft (73) is rotatably mounted between opposite surfaces of the adjustment plate (71) and the inner rotating plate (76); and a side support block (72) is rotatably mounted on an outer surface of the rotating shaft (73).

3. A concrete compressive strength testing machine according to claim 2, characterized in that: The positioning plate (75) is fixedly connected to the hydraulic press (1), the punching rod (74) and the bearing assembly (5) are arranged on the same central axis, the side support block (72) is adapted to the bearing assembly (5), and the punching head (77) is adapted to punching concrete.

4. A concrete compressive strength testing machine according to claim 1, characterized in that: The clamping assembly (3) comprises a mounting plate (35), a connecting block (36) is fixedly mounted below the outer surface of the mounting plate (35), positioning blocks (32) are fixedly mounted on both sides of the outer surface of the connecting block (36), a supporting plate (38) is fixedly mounted on the bottom of the positioning block (32), a clamping block (37) is fixedly mounted on the outer surface of the positioning block (32), a positioning clamp group (31) is fixedly mounted on the top of the outer surface of the mounting plate (35), and a turning handle (39) is threadedly mounted on the top of the positioning clamp group (31).

5. A concrete compressive strength testing machine according to claim 4, characterized in that: The mounting plate (35) is fixedly mounted on the top side of the base (4); a bottom support seat (33) is fixedly mounted on the bottom of the positioning clamp group (31); a through shaft (34) is fixedly mounted on the bottom of the bottom support seat (33); the bottom support seat (33) penetrates the bearing assembly (5) and extends to the interior of the cavity of the central groove (9).

6. A concrete compressive strength testing machine according to claim 5, characterized in that: The positioning clamp group (31) comprises a connecting block (313), a clamping block (311) and a bottom block (315) are respectively fixedly mounted on the surface of the connecting block (313), a telescopic rod (317) is movably mounted between the clamping block (311) and the bottom block (315), a clamping plate (312) is fixedly mounted on the outer surface of the connecting block (313), a slot plate (314) is fixedly mounted on the outer surface of the bottom block (315), and the clamping plate (312) is adapted to fit the slot plate (314).

7. A concrete compressive strength testing machine according to claim 6, characterized in that: The clamping block (37) is fixedly mounted on the top of the clamping block (311); a pressing block (319) is fixedly mounted on the bottom of the clamping block (311); a receiving clamping block (318) is fixedly mounted on the top of the slot plate (314); and the pressing block (319) is adapted to fit the receiving clamping block (318).

8. A concrete compressive strength testing machine according to claim 1, characterized in that: The bearing assembly (5) comprises a chassis (56), a bottom plate (58) being fixedly mounted at the bottom of the chassis (56), arc grooves (55) being provided at both sides of the outer surface of the bottom plate (58), the arc grooves (55) being adapted to the outer surface of the through-shaft (34), and the chassis (56) being fixedly mounted at the top middle of the bottom support frame (8).

9. A concrete compressive strength testing machine according to claim 8, characterized in that: A positioning groove (53) is fixedly mounted on the top of the chassis (56), an extension plate (51) is fixedly mounted inside the positioning groove (53), a through groove (54) is formed inside the extension plate (51), and the through groove (54) is sleeved on the outer surface of the through shaft (34).

10. A concrete compressive strength testing machine according to claim 9, characterized in that: A stamping plate (52) is fixedly mounted in the middle of the positioning groove (53), and an extension connecting plate (57) is fixedly mounted on the surface of the positioning groove (53) away from the extension plate (51). Two extension connecting plates (57) are provided, and the two extension connecting plates (57) are symmetrically arranged with the stamping plate (52) as support.

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