Compression resistance testing machine for concrete

Abstract

The invention discloses a compressive resistance testing machine for concrete, and relates to the technical field of pressure testing, the compressive resistance testing machine comprises a working box body, a hydraulic rod is mounted in the working box body, a processing table is mounted at the bottom of the working box body, a supporting structure is mounted at the top of the processing table, and a concrete test piece is arranged at the top of the supporting structure; and the self-adaptive mechanism is arranged below the hydraulic rod. By arranging the self-adaptive mechanism, each fitting plate and the first auxiliary plate slowly expand outwards according to the shape of the surface of the concrete test piece until the fitting plate and the first auxiliary plate are matched with the shape of the surface of the concrete test piece, so that the device can be automatically matched according to the convex shape of the surface of the concrete test piece; the contact pressure between each attaching plate and each auxiliary plate and the surface of the concrete test piece is ensured to be uniformly distributed, and local stress concentration caused by surface unevenness is avoided, so that the load applied in the pressure test is closer to the actual stress state of concrete.

Description

Technical Field

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

[0002] Concrete is a general term for engineering composite materials that are made of aggregates bonded together by cementitious materials. The term concrete usually refers to cement as the cementitious material, sand and stone as aggregates, mixed with water (which may contain admixtures and additives) in a certain proportion, and then mixed to obtain cement concrete. Concrete is generally paved on roads. However, before the actual application of concrete, special testing equipment will be used to test the strength of the concrete.

[0003] The working principle of an existing concrete pressure resistance testing machine is as follows: concrete is laid on a supporting component, and a pressure plate is driven by a hydraulic rod to apply pressure to the concrete specimen to carry out a strength test. In actual concrete, the surface after laying generally has non-flat morphological features such as undulations and local protrusions. It is difficult for a traditional single flat pressure plate to achieve complete fit with the top of the non-flat concrete. This insufficient fit will cause a gap or local suspension between the pressure plate and the laid concrete, resulting in uneven load distribution during the test, which significantly affects the accuracy of the pressure test results. For this reason, we provide a concrete pressure resistance testing machine to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the surface of concrete after laying has common non-flat morphological characteristics such as undulations and local protrusions. It is difficult for a traditional single flat plate to fully fit with the top of the non-flat concrete. This insufficient fit will lead to gaps or local suspension between the plate and the concrete after laying, resulting in uneven load distribution during the test, which significantly affects the accuracy of the pressure test results. A concrete pressure resistance testing machine is provided.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a concrete pressure resistance testing machine, comprising: a working box, a hydraulic rod is installed inside the working box, a processing table is installed at the bottom of the working box, a supporting structure is installed on the top of the processing table, and a concrete specimen is provided on the top of the supporting structure; an adaptive mechanism is arranged below the hydraulic rod, the adaptive mechanism includes a fixed frame fixedly connected to the execution end of the hydraulic rod, a second fixed plate is fixedly connected to the inner side of the fixed frame, a movable plate is provided on both sides of the second fixed plate, an auxiliary bonding unit is provided between the movable plate and the second fixed plate, a first auxiliary plate is provided on one side of the two movable plates, a second auxiliary plate is provided on one side of the first auxiliary plate, and a plurality of bonding plates are combined with each other on one side of the second auxiliary plate, the plurality of bonding plates are connected by connecting parts, and locking components for locking the plurality of bonding plates are provided on both sides of the fixed frame.

[0006] As a further solution of the present invention: the connecting component connection includes two auxiliary seats fixedly connected to the movable plate, the second auxiliary plate and one side of the multiple bonding plates, respectively, the first auxiliary plate is arranged at the front end of the movable plate, the bonding plate is arranged at the front end of the second auxiliary plate, and the multiple bonding plates are arranged one in front and one behind, the outer walls of both sides of the first auxiliary plate and the bonding plate are fixedly connected with a first shaft rod, and one end of the first shaft rod passes through the outside of the auxiliary seat and is rotatably connected to the auxiliary seat, and a torsion spring is installed between the inner side of the first shaft rod and the auxiliary seat.

[0007] As a further solution of the present invention: the auxiliary bonding unit includes a first fixed plate fixedly connected to both sides of the fixed frame, one side of the first fixed plate is fixedly connected to a motor, the execution end of the motor is fixedly connected to a half gear, both sides of the fixed frame are fixedly connected to two fixed seats, the inner sides of the two fixed seats are rotatably connected to a bidirectional screw rod, the outer wall of the bidirectional screw rod is fixedly connected to a first spur gear meshing with the half gear, the two ends of the bidirectional screw rod respectively pass through the fixed seat and fixedly connected to a limited circular plate, and the outer wall of the bidirectional screw rod is threadedly connected to two connecting slides, the outer wall of the bidirectional screw rod is provided with a positive thread and a negative thread, the two connecting slides are respectively threadedly connected to the outer walls of the positive thread and the negative thread, and the inner sides of the two connecting slides are fixedly connected to the two ends of the movable plate.

[0008] As a further solution of the present invention: the auxiliary bonding unit also includes two limiting slide grooves respectively opened on the inner sides of the two first auxiliary plates, and the inner sides of the two limiting slide grooves are slidably connected to a sliding rod, one end of the sliding rod passes through the outside of the first auxiliary plate and is fixedly connected to the second auxiliary plate, an auxiliary spring is installed between one end of the sliding rod and the limiting slide groove, one side of the two movable plates is fixedly connected to a group of auxiliary sliding rods, and the two groups of auxiliary sliding rods are staggered, and a columnar slide groove matching the auxiliary sliding rod is opened on the inner side of the second fixed plate, and the auxiliary sliding rod is slidably connected to the second fixed plate through the columnar slide groove.

[0009] As a further solution of the present invention, the locking assembly includes a fixed connecting rod fixedly connected to the top of the plurality of auxiliary seats, one end of each fixed connecting rod is fixedly connected to a guiding air chamber, the inner side of the guiding air chamber is slidably connected to a rectangular piston plate, one end of the rectangular piston plate passes through the outside of the guiding air chamber and is fixedly connected to a sleeve rod, one end of each first shaft rod is fixedly connected to a sleeve shaft, and the sleeve rod is sleeved on the outer wall of the sleeve shaft, and a driving component for driving the sealing plate to move is provided on one side of the half gear.

[0010] As a further solution of the present invention: the locking assembly also includes two rectangular connecting rods fixedly connected to one end of the fixed frame, one end of the two rectangular connecting rods is fixedly connected to a main air bin, an air pressure detection sensor is installed on the inner side of the main air bin, a sealing pipe is installed at the first air groove of the main air bin, and a sealing plate is provided above the sealing pipe, and a second air groove is opened at both ends of the main air bin.

[0011] As a further solution of the present invention: a through groove is opened on the inner side of the guiding gas warehouse, a first hose is installed between the through grooves of each two adjacent guiding gas warehouses, and a third air groove is opened on the top of the guiding gas warehouse close to the fixed frame, and a second hose is installed between the two second air grooves of the main air warehouse and the third air grooves of the two guiding gas warehouses respectively.

[0012] As a further solution of the present invention: the driving component includes an auxiliary connecting seat fixedly connected to the bottom of one of the fixed seats, one side of the half gear is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a second spur gear, one side of the second spur gear is rotatably connected to the auxiliary connecting seat through a rotating shaft, a rectangular connecting plate is provided on one side of the auxiliary connecting seat, one side of the rectangular connecting plate is fixedly connected to a trapezoidal slide, a trapezoidal slide matching the trapezoidal slide is provided on the inner side of the auxiliary connecting seat, the rectangular connecting plate is slidably connected to the trapezoidal slide through the trapezoidal slide, one end of the rectangular connecting plate is fixedly connected to a spur rack meshing with the second spur gear, and the bottom of the rectangular connecting plate is fixedly connected to the top of the sealing plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up an adaptive mechanism, each bonding plate and the first auxiliary plate slowly expand outward according to the shape of the concrete specimen surface until it fits the surface shape of the concrete specimen. This allows the device to automatically adapt to the convex shape of the concrete specimen surface, ensuring that the contact pressure between each bonding plate and auxiliary plate and the concrete specimen surface is evenly distributed, avoiding local stress concentration caused by surface unevenness. This makes the load applied in the pressure test closer to the actual stress state of the concrete. Moreover, through adaptive rotation and expansion, the bonding plate and auxiliary plate can closely fit the complex contours of the concrete specimen surface, avoiding gaps or virtual contact, making load transfer more efficient, thereby improving the accuracy and reliability of the test results; 2. By coordinating components such as half gears, the bonding plate can automatically adjust its position and angle according to the curvature and height of the arch, forming a wrap-around fit. This avoids blind spots or gaps in the arch, ensuring that every area of ​​the concrete specimen surface (including the convex surface) is in full contact with the bonding plate. This prevents local stress overload caused by uneven contact on the arch surface, and avoids premature cracking of the concrete specimen in non-target areas during the test. This ensures that the pressure test data (such as cracking load and crack development path) truly reflects the actual performance of the concrete specimen, making the pressure test results closer to the actual stress conditions of the bridge during service, providing a more reliable reference for engineering design, and thus greatly improving the accuracy of the data. 3. By setting a locking assembly, after the main air chamber is sealed, the rectangular piston plate is limited to prevent the bonding plate from rotating or displacing under pressure, ensuring that the position of the components is fixed during the test. After the movable plate, auxiliary plate and other components are limited, the overall rigidity of the structure is improved, avoiding pressure attenuation or force deviation of the concrete specimen due to loose components, reducing test errors, and thus greatly improving the accuracy of the pressure test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the fixing frame of the present invention; Figure 3 This is a structural schematic diagram of one side of the second fixing plate of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the main gas chamber of the present invention; Figure 6 This is a schematic diagram of the inner structure of the fixing seat of the present invention; Figure 7 A cross-sectional view of the first auxiliary plate of the present invention Figure 8 This is a schematic diagram of the inner structure of the auxiliary connecting seat of the present invention Figure 9 This is a schematic diagram of the structure of the movable plate after adjustment of the present invention; Figure 10 This is a schematic diagram of the laminated panels of the present invention after lamination.

[0015] In the figure: 1. working box; 2. hydraulic rod; 3. supporting structure; 4. concrete specimen; 5. fixing frame; 6. bonding plate; 7. first auxiliary plate; 8. sliding rod; 9. second auxiliary plate; 10. fixing connecting rod; 11. auxiliary air chamber; 12. fixing seat; 13. main air chamber; 14. first hose; 15. first shaft; 16. torsion spring; 17. two-way screw rod; 18. first straight gear; 19. connecting slide; 20. auxiliary spring; 21. sleeve rod; 22. auxiliary sliding rod; 23. sleeve shaft; 24 , rectangular piston plate; 25, limiting slide; 26, second hose; 27, limiting circular plate; 28, first fixed plate; 29, motor; 30, half gear; 31, connecting rod; 32, second spur gear; 33, auxiliary connecting seat; 34, rectangular connecting plate; 35, spur rack; 36, sealing plate; 37, sealing pipe; 38, air pressure detection sensor; 39, rectangular connecting rod; 40, trapezoidal slide; 41, trapezoidal slide; 42, auxiliary seat; 43, movable plate; 44, second fixed plate; 45, processing table. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0018] See also Figures 1 to 10 , this embodiment provides a concrete pressure resistance testing machine, including: a working box 1, a hydraulic rod 2 is installed inside the working box 1, a processing table 45 is installed at the bottom of the working box 1, a support structure 3 is installed on the top of the processing table 45, and a concrete specimen 4 is set on the top of the support structure 3; an adaptive mechanism is arranged below the hydraulic rod 2, the adaptive mechanism includes a fixed frame 5 fixedly connected to the execution end of the hydraulic rod 2, a second fixed plate 44 is fixedly connected to the inner side of the fixed frame 5, a movable plate 43 is provided on both sides of the second fixed plate 44, an auxiliary bonding unit is provided between the movable plate 43 and the second fixed plate 44, a first auxiliary plate 7 is provided on one side of the two movable plates 43, a second auxiliary plate 9 is provided on one side of the first auxiliary plate 7, and the second auxiliary plate 9 is provided on the other side. One side of the auxiliary plate 9 is provided with a plurality of mutually combined laminating plates 6, and the plurality of laminating plates 6 are connected by a connecting component. Locking components for locking the plurality of laminating plates 6 are provided on both sides of the fixed frame 5, and the connecting component connection includes two auxiliary seats 42 fixedly connected to the movable plate 43, the second auxiliary plate 9 and one side of the plurality of laminating plates 6, the first auxiliary plate 7 is arranged at the front end of the movable plate 43, the laminating plate 6 is arranged at the front end of the second auxiliary plate 9, and the plurality of laminating plates 6 are arranged one after the other, and the outer walls of both sides of the first auxiliary plate 7 and the laminating plate 6 are fixedly connected to a first shaft rod 15, and one end of the first shaft rod 15 passes through the outside of the auxiliary seat 42 and is rotatably connected to the auxiliary seat 42, and a torsion spring 16 is installed between the inner side of the first shaft rod 15 and the auxiliary seat 42; The multiple bonding plates 6 are initially in an arched state. When the concrete specimen 4 needs to be pressure tested, the concrete specimen 4 is first laid on the supporting structure 3. At this time, the hydraulic rod 2 is started to drive the fixing frame 5 to drive the multiple bonding plates 6 and the first auxiliary plate 7 on both sides of the second fixing plate 44 to move toward the top of the concrete specimen 4. When each bonding plate 6 and the first auxiliary plate 7 are in contact with the concrete specimen 4, since the multiple bonding plates 6 are initially in an arched state, in the process of each bonding plate 6 and the first auxiliary plate 7 being in contact with the surface of the concrete specimen 4, each bonding plate 6 and the first auxiliary plate 7 can automatically and adaptively rotate when encountering resistance, so that each bonding plate 6 and the first auxiliary plate 7 can automatically and adaptively rotate when encountering resistance. The auxiliary plate 7 slowly expands outward according to the shape of the surface of the concrete specimen 4 until it fits the surface shape of the concrete specimen 4, so that the device can automatically adapt to the convex shape of the surface of the concrete specimen 4, ensuring that the contact pressure between each bonding plate 6 and the auxiliary plate and the surface of the concrete specimen 4 is evenly distributed, avoiding local stress concentration caused by surface unevenness, which makes the load applied in the pressure test closer to the actual stress state of the concrete, and through adaptive rotation and expansion, the bonding plate 6 and the auxiliary plate can closely fit the complex contour of the surface of the concrete specimen 4, avoiding gaps or virtual contact, making the load transfer more efficient, thereby improving the accuracy and reliability of the test results.

[0019] See also Figures 2 to 9 The auxiliary laminating unit includes a first fixed plate 28 fixedly connected to both sides of the fixed frame 5, one side of the first fixed plate 28 is fixedly connected to a motor 29, the execution end of the motor 29 is fixedly connected to a half gear 30, both sides of the fixed frame 5 are fixedly connected to two fixed seats 12, the inner sides of the two fixed seats 12 are rotatably connected with a bidirectional screw rod 17, the outer wall of the bidirectional screw rod 17 is fixedly connected with a first spur gear 18 meshing with the half gear 30, the two ends of the bidirectional screw rod 17 respectively pass through the fixed seat 12 and are fixedly connected to the limited circular plate 27, and the outer wall of the bidirectional screw rod 17 is threadedly connected to two connecting slides 19, the outer wall of the bidirectional screw rod 17 is provided with a positive thread and a negative thread, and the two connecting slides 19 are respectively threadedly connected to the positive thread and The outer wall of the reverse thread, and the inner sides of the two connecting slides 19 are fixedly connected to the two ends of the movable plate 43, the auxiliary fitting unit also includes two limiting slide grooves 25 respectively opened on the inner sides of the two first auxiliary plates 7, the inner sides of the two limiting slide grooves 25 are slidably connected with a slide rod 8, one end of the slide rod 8 passes through the outside of the first auxiliary plate 7 and is fixedly connected to the second auxiliary plate 9, an auxiliary spring 20 is installed between one end of the slide rod 8 and the limiting slide groove 25, one side of the two movable plates 43 is fixedly connected with a group of auxiliary slide rods 22, and the two groups of auxiliary slide rods 22 are staggered, and a cylindrical slide groove matching the auxiliary slide rod 22 is opened on the inner side of the second fixed plate 44, and the auxiliary slide rod 22 is slidably connected to the second fixed plate 44 through the cylindrical slide groove; When the hydraulic rod 2 drives the fixing frame 5 so that each bonding plate 6 and the first auxiliary plate 7 are bonded to the surface of the concrete specimen 4, the two motors 29 are started before the test to drive the half gear 30 to rotate, and the half gear 30 drives the first straight gear 18 to rotate and drives the bidirectional screw rod 17 to rotate inside the fixing seat 12, and at the same time drives the two connecting slides 19 to drive the movable plate 43 to move toward the two ends of the second fixed plate 44 respectively. When the bonding plate 6 is in the process of bonding to the top of the concrete specimen 4, the top of the concrete specimen 4 bulges. At this time, the movable plate 43 drives the bottom of one of the two adjacent bonding plates 6 to bond along one side of the arch on the surface of the concrete specimen 4. When the connection between the two adjacent bonding plates 6 moves to the highest point of the arch, the other bonding plate is driven under the action of the torsion spring 16. The bottom of 6 is fitted with the other side of the arch. When the connecting slide 19 moves to the maximum limit, the motor 29 is stopped. At this time, multiple bonding plates 6 are completely fitted with the surface of the concrete specimen 4. The bonding plates 6 can automatically adjust their positions and angles according to the curvature and height of the arch to form a wrap-around fit, avoiding blind spots or gaps in the arch. It ensures that every area of ​​the surface of the concrete specimen 4 (including the convex surface) is in full contact with the bonding plates 6, preventing local stress overload caused by uneven contact on the arch surface, and avoiding premature cracking of the concrete specimen 4 in non-target areas during the test. It ensures that the pressure test data (such as cracking load and crack development path) truly reflects the actual performance of the concrete specimen 4, making the pressure test results closer to the actual stress conditions of the bridge during service, providing a more reliable reference for engineering design, and thus improving the accuracy of the data; The lateral adjustment of the above structure is to perform the laminating operation and to adjust the laminating posture within a certain range so that the laminating plate 6 can be stably laminating to the raised portion of the surface of the concrete specimen 4. It is mainly to solve the problem of large gaps when the laminating plate 6 is laminating to the raised portion of the surface of the concrete specimen 4 and to adjust the posture, and is not intended to achieve perfect laminating (because the shape of the raised or convex portion on the top of the concrete specimen 4 cannot be determined, the purpose of implementing this solution is to adjust the laminating posture of the laminating plate 6 to achieve a better laminating, thereby improving the accuracy of subsequent testing); When the moving plate 43 pushes the bonding plate 6 to move laterally to adapt to the surface of the concrete specimen 4, when the bonding plate 6 encounters resistance during movement, the second auxiliary plate 9 drives the sliding rod 8 to move inside the first auxiliary plate 7 and shrink within a certain range.

[0020] See also Figures 2 to 8The locking assembly includes a fixed connecting rod 10 fixedly connected to the top of a plurality of auxiliary seats 42, one end of each fixed connecting rod 10 is fixedly connected to a guiding air chamber 11, the inner side of the guiding air chamber 11 is slidably connected to a rectangular piston plate 24, one end of the rectangular piston plate 24 passes through the outside of the guiding air chamber 11 and is fixedly connected to a sleeve rod 21, one end of each first shaft 15 is fixedly connected to a sleeve shaft 23, and the sleeve rod 21 is sleeved on the outer wall of the sleeve shaft 23, and one side of the half gear 30 is provided with a sealing plate 36 for driving. The movable driving component, the locking assembly also includes two rectangular connecting rods 39 fixedly connected to one end of the fixed frame 5, one end of the two rectangular connecting rods 39 is fixedly connected to the main air chamber 13, and an air pressure detection sensor 38 is installed on the inner side of the main air chamber 13. A sealing pipe 37 is installed at the first air groove of the main air chamber 13, and a sealing plate 36 is provided above the sealing pipe 37. A second air groove is provided at both ends of the main air chamber 13, and a through groove is provided on the inner side of the auxiliary air chamber 11. A first hose 14 is installed between the through grooves of each adjacent two auxiliary air chambers 11, and a third air groove is provided on the top of the auxiliary air chamber 11 near the fixed frame 5. A second hose 26 is installed between the two second air grooves of the main air chamber 13 and the third air grooves of the two auxiliary air chambers 11 respectively. The driving component includes an auxiliary connecting seat 33 fixedly connected to the bottom of one of the fixed seats 12, one side of the half gear 30 is fixedly connected to a connecting rod 31, one end of the connecting rod 31 is fixedly connected to a second spur gear 32, and one side of the second spur gear 32 is connected to the rotating shaft. The auxiliary connecting seat 33 is rotatably connected. A rectangular connecting plate 34 is provided on one side of the auxiliary connecting seat 33. A trapezoidal slide 40 is fixedly connected to one side of the rectangular connecting plate 34. A trapezoidal slide 41 matching the trapezoidal slide 40 is provided on the inner side of the auxiliary connecting seat 33. The rectangular connecting plate 34 is slidably connected to the trapezoidal slide 41 through the trapezoidal slide 40. A spur rack 35 meshing with the second spur gear 32 is fixedly connected to one end of the rectangular connecting plate 34. The bottom of the rectangular connecting plate 34 is fixedly connected to the top of the sealing plate 36. When the multiple bonding plates 6 are completely bonded to the surface of the concrete specimen 4, the half gear 30 is separated from the first spur gear 18, and the second spur gear 32 is driven by the half gear 30 to drive the spur rack 35 to move downward, and the spur rack 35 is driven to move the sealing plate 36 to the top of the sealing pipe 37. When the motor 29 stops running, the sealing plate 36 is bonded to the top of the sealing pipe 37, so that the main air chamber 13 is sealed. At the same time as the main air chamber 13 is sealed, air no longer enters the interior of each auxiliary air chamber 11, thereby limiting the rectangular piston plate 24. At the same time, the rectangular piston plate 24 is used to The sleeve rod 21 is limited, and the sleeve rod 21 limits the first shaft 15 through the sleeve shaft 23, so that the multiple bonding plates 6, the first auxiliary plate 7, the second auxiliary plate 9 and the movable plate 43 are completely bonded to the concrete specimen 4 and are in a locked state, preventing the bonding plate 6 from rotating or displacing under pressure, ensuring that the position of the components is fixed during the test. After the movable plate 43, the auxiliary plate and other components are limited, the overall rigidity of the structure is improved, avoiding pressure attenuation or force offset of the concrete specimen 4 due to loose components, reducing test errors, and thus greatly improving the accuracy of the pressure test data.

[0021] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A concrete compression testing machine, characterized in that: include: A working box (1), wherein a hydraulic rod (2) is installed inside the working box (1), a processing table (45) is installed at the bottom of the working box (1), a supporting structure (3) is installed on the top of the processing table (45), and a concrete test piece (4) is provided on the top of the supporting structure (3); An adaptive mechanism is arranged below the hydraulic rod (2), and the adaptive mechanism includes a fixed frame (5) fixedly connected to the execution end of the hydraulic rod (2), a second fixed plate (44) is fixedly connected to the inner side of the fixed frame (5), a movable plate (43) is provided on both sides of the second fixed plate (44), an auxiliary bonding unit is provided between the movable plate (43) and the second fixed plate (44), a first auxiliary plate (7) is provided on one side of the two movable plates (43), a second auxiliary plate (9) is provided on one side of the first auxiliary plate (7), and a plurality of mutually combined bonding plates (6) are provided on one side of the second auxiliary plate (9), and the plurality of bonding plates (6) are connected by connecting parts, and locking components for locking the plurality of bonding plates (6) are provided on both sides of the fixed frame (5).

2. A concrete compression testing machine according to claim 1, characterized in that: The connecting component connection includes two auxiliary seats (42) respectively fixedly connected to the movable plate (43), the second auxiliary plate (9) and one side of the plurality of bonding plates (6), the first auxiliary plate (7) is arranged at the front end of the movable plate (43), the bonding plate (6) is arranged at the front end of the second auxiliary plate (9), and the plurality of bonding plates (6) are arranged one in front and one behind, the outer walls of both sides of the first auxiliary plate (7) and the bonding plate (6) are fixedly connected with a first shaft (15), and one end of the first shaft (15) passes through the outside of the auxiliary seat (42) and is rotatably connected to the auxiliary seat (42), and a torsion spring (16) is installed between the inner side of the first shaft (15) and the auxiliary seat (42).

3. A concrete compression testing machine according to claim 2, characterized in that: The auxiliary laminating unit includes a first fixed plate (28) fixedly connected to both sides of the fixed frame (5), one side of the first fixed plate (28) is fixedly connected to a motor (29), the execution end of the motor (29) is fixedly connected to a half gear (30), both sides of the fixed frame (5) are fixedly connected to two fixed seats (12), the inner sides of the two fixed seats (12) are rotatably connected to a bidirectional screw rod (17), the outer wall of the bidirectional screw rod (17) is fixedly connected to a first spur gear (18) meshing with the half gear (30), the two ends of the bidirectional screw rod (17) respectively pass through the fixed seat (12) and are fixedly connected to the limited circular plate (27), and the outer wall of the bidirectional screw rod (17) is threadedly connected to two connecting slides (19), the outer wall of the bidirectional screw rod (17) is provided with a positive thread and a negative thread, the two connecting slides (19) are threadedly connected to the outer walls of the positive thread and the negative thread, and the inner sides of the two connecting slides (19) are fixedly connected to the two ends of the movable plate (43).

4. A concrete compression testing machine according to claim 3, characterized in that: The auxiliary fitting unit also includes two limiting slide grooves (25) respectively opened on the inner sides of the two first auxiliary plates (7), and the inner sides of the two limiting slide grooves (25) are slidably connected to a slide rod (8), one end of the slide rod (8) passes through the outside of the first auxiliary plate (7) and is fixedly connected to the second auxiliary plate (9), and an auxiliary spring (20) is installed between one end of the slide rod (8) and the limiting slide groove (25), one side of the two movable plates (43) is fixedly connected to a group of auxiliary slide rods (22), and the two groups of auxiliary slide rods (22) are staggered, and the inner side of the second fixed plate (44) is provided with a columnar slide groove matching the auxiliary slide rod (22), and the auxiliary slide rod (22) is slidably connected to the second fixed plate (44) through the columnar slide groove.

5. A concrete compression testing machine according to claim 4, characterized in that: The locking assembly includes a fixed connecting rod (10) fixedly connected to the top of the plurality of auxiliary seats (42), one end of each fixed connecting rod (10) is fixedly connected to a guiding air chamber (11), the inner side of the guiding air chamber (11) is slidably connected to a rectangular piston plate (24), one end of the rectangular piston plate (24) passes through the outside of the guiding air chamber (11) and is fixedly connected to a sleeve rod (21), one end of each first shaft rod (15) is fixedly connected to a sleeve shaft (23), and the sleeve rod (21) is sleeved on the outer wall of the sleeve shaft (23), and a driving component for driving the sealing plate (36) to move is provided on one side of the half gear (30).

6. A concrete compression testing machine according to claim 5, characterized in that: The locking assembly further comprises two rectangular connecting rods (39) fixedly connected to one end of the fixing frame (5), one end of the two rectangular connecting rods (39) being fixedly connected to a main air chamber (13), an air pressure detection sensor (38) being installed on the inner side of the main air chamber (13), a sealing pipe (37) being installed at the first air groove of the main air chamber (13), a sealing plate (36) being provided above the sealing pipe (37), and a second air groove being provided at both ends of the main air chamber (13).

7. A concrete compression testing machine according to claim 6, characterized in that: A through groove is provided on the inner side of the guiding gas chamber (11), a first hose (14) is installed between the through grooves of each two adjacent guiding gas chambers (11), and a third air groove is provided on the top of the guiding gas chamber (11) close to the fixing frame (5), and a second hose (26) is installed between the two second air grooves of the main guiding gas chamber (13) and the third air grooves of the two guiding gas chambers (11), respectively.

8. A concrete compression testing machine according to claim 7, characterized in that: The driving component includes an auxiliary connecting seat (33) fixedly connected to the bottom of one of the fixed seats (12), one side of the half gear (30) is fixedly connected to a connecting rod (31), one end of the connecting rod (31) is fixedly connected to a second spur gear (32), one side of the second spur gear (32) is rotatably connected to the auxiliary connecting seat (33) through a rotating shaft, one side of the auxiliary connecting seat (33) is provided with a rectangular connecting plate (34), one side of the rectangular connecting plate (34) is fixedly connected to a trapezoidal slide (40), the inner side of the auxiliary connecting seat (33) is provided with a trapezoidal slide (41) matching the trapezoidal slide (40), the rectangular connecting plate (34) is slidably connected to the trapezoidal slide (41) through the trapezoidal slide (40), one end of the rectangular connecting plate (34) is fixedly connected to a spur rack (35) meshing with the second spur gear (32), and the bottom of the rectangular connecting plate (34) is fixedly connected to the top of the sealing plate (36).

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