Auxiliary device for testing dynamic elastic modulus of concrete core sample by using forced resonance method

Abstract

The utility model discloses an auxiliary device for testing the dynamic elastic modulus of a concrete core sample by using a forced resonance method, which comprises a bottom plate, a detector is arranged on one side of the upper surface of the bottom plate, an insertion device is arranged on one side of the detector on the upper surface of the bottom plate in a sliding manner, and the insertion device comprises an abutting plate and a moving plate, the side wall of the abutting plate and the side wall of the movable plate are each provided with a detection head, the two sets of detection heads are opposite to each other, and the side, facing the detector, of the abutting plate is located on the surface of the bottom plate and provided with an electrifying assembly. After a clamping block is pushed by a push rod to clamp the core sample, a detection head on the side wall of a movable plate is inserted into the core sample by manually rotating a handle, and then the core sample is extruded by the movable plate, so that a detection head on the side wall of a propping plate is extruded to be inserted into a slot, and the detection of the core sample by electrifying the detector is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete material testing, in particular to an auxiliary device for testing the dynamic elastic modulus of a concrete core sample using a forced resonance method. Background Art

[0002] The dynamic elastic modulus is measured using the dynamic method, which is based on the propagation velocity of elastic waves in concrete. The dynamic elastic modulus of concrete is generally measured using the resonance method, using a prismatic specimen measuring 100mm x 100mm x 100mm.

[0003] In the existing dynamic elastic modulus test of concrete core samples, the excitation and vibration pickup probes need to be manually inserted into the concrete core sample. The manual insertion direction may be tilted, affecting the test data, and the shaking generated during the concrete core sample testing process can easily affect the test data.

[0004] After searching, the prior art publication number is CN218766298U, which discloses an auxiliary device for testing the dynamic elastic modulus of concrete core samples using the forced resonance method. The device comprises a base, a positioning slot for an excitation and vibration pickup probe, and a core sample support body. The positioning slot for the excitation and vibration pickup probe is designed as a rectangular surface on the outside and a semicircular surface on the inside. A steel plate is provided at one end of the positioning slot for the excitation and vibration pickup probe. The core sample support body is provided outside the positioning slot for the excitation and vibration pickup probe. The outer side of the core sample support body is designed as a rectangular surface, and the inner side is designed as an arc-shaped surface. The arc length of the end face of the core sample support body is consistent with the length from the bottom of the steel plate at the end face of the positioning slot for the excitation and vibration pickup probe to the arc. This utility model overcomes the influence of the flatness and verticality of the upper and lower sections on the positioning of the probe; it can simultaneously check the specimen size and quickly and accurately position the probe for the excitation and vibration pickup probe.

[0005] However, the above patent has the problem that the manual insertion direction may be tilted and affect the detection data, and the shaking generated during the concrete core sample detection process may easily affect the detection data. Therefore, an auxiliary device for testing the dynamic elastic modulus of concrete core samples using the forced resonance method is needed. Utility Model Content

[0006] The purpose of the utility model is to provide an auxiliary device for testing the dynamic elastic modulus of concrete core samples by a forced resonance method. By setting a movable movable plate, the tester can push the movable plate by simply turning the handle, so that the test head above the side wall of the movable plate is vertically inserted into the core sample, thereby ensuring the insertion direction of the test head. At the same time, a clamping block is also provided to fix the core sample, thereby increasing the stability during testing, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] An auxiliary device for testing the dynamic elastic modulus of a concrete core sample using a forced resonance method, comprising a bottom plate, a detector provided on one side of the upper surface of the bottom plate, and an insertion device slidably provided on one side of the detector located on the upper surface of the bottom plate;

[0009] The insertion device includes a support plate and a movable plate. The side walls of the support plate and the movable plate are both provided with detection heads, and the two groups of detection heads are relatively opposed to each other. An energized component is also provided on the bottom plate surface on the side of the support plate facing the detector, and a pushing component is also provided under the side wall of the movable plate away from the detector.

[0010] Preferably, the power-on component includes a fixing plate and a slot, the slot is arranged on the side wall of the fixing plate and is at the same height as the detection head, the slot is linearly connected to the detector, the fixing plate is fixedly installed on the surface of the base plate, the slot is plugged into the detection head, and a buffer module is also provided under the side wall of the abutment plate.

[0011] Preferably, the buffer module includes a compression spring, a sliding groove is provided on the surface of the bottom plate, one end of the compression spring is fixedly installed on one inner wall of the sliding groove, and the other end of the compression spring is fixedly installed on the side wall of the abutment plate.

[0012] Preferably, the side walls of the abutment plate and the movable plate located inside the chute are both slidably connected to the inner wall of the chute.

[0013] Preferably, the pushing assembly includes a screw, a thread groove is opened on the inner wall of one side of the slide groove, the end of the screw passes through the thread groove and is rotatably arranged with the movable plate, the screw is threadedly connected to the thread groove, and the movable plate is fixed with a handle at the end of the outer wall of the bottom plate.

[0014] Preferably, a support plate is provided above the side wall of the movable plate, and the cable outside the detection head above the side wall of the movable plate passes through the support plate and is linearly connected to the detector.

[0015] Preferably, fixing frames are symmetrically and slidably provided on both side walls of the bottom plate, and push rods are provided on the opposite side walls of the two groups of fixing frames, and the working ends of the push rods are fixedly mounted on the clamping blocks.

[0016] Preferably, upper clamping plates are provided above the opposite side walls of the two groups of clamping blocks, and guide grooves are respectively provided on the surface of the bottom plate on both sides of the slide groove, and the inner walls of the guide grooves are respectively slidably connected to the guide blocks, and the guide blocks are respectively provided on the bottom surfaces of the clamping blocks.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model provides a movable movable plate. The inspector places the core sample between two sets of clamping blocks, pushes the clamping blocks to clamp it by a push rod, and manually turns the handle to insert the detection head on the side wall of the movable plate into the core sample. The core sample is squeezed through the movable plate, and then the detection head on the side wall of the plate is squeezed and inserted into the slot, so as to complete the power-on of the detector to detect the core sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the upper splint position structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the guide block structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the insertion device of the utility model.

[0023] In the figure: 1. Base plate; 2. Detector; 3. Fixed plate; 4. Fixed frame; 5. Push rod; 6. Clamping block; 7. Upper clamping plate; 8. Slide groove; 9. Threaded groove; 10. Screw; 11. Handle; 12. Moving plate; 13. Guide block; 14. Guide groove; 15. Slot; 16. Compression spring; 17. Abutment plate; 18. Detection head; 19. Support plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0025] See also Figures 1 to 4 , the utility model provides a technical solution:

[0026] An auxiliary device for testing the dynamic elastic modulus of a concrete core sample using a forced resonance method, comprising a base plate 1, a detector 2 being provided on one side of the upper surface of the base plate 1, and an insertion device being slidably provided on one side of the detector 2 on the upper surface of the base plate 1;

[0027] The insertion device includes a support plate 17 and a movable plate 12. The side walls of the support plate 17 and the movable plate 12 are both provided with detection heads 18, and the two groups of detection heads 18 are opposite to each other. The side of the support plate 17 facing the detector 2 is also provided with a power-on component on the surface of the base plate 1, and a pushing component is also provided under the side wall of the movable plate 12 away from the detector 2.

[0028] By arranging a power-on device on the surface of the bottom plate 1 on the side of the back plate 17 facing the detector 2, and a pushing component is also provided under the side wall of the movable plate 12, so that the movable plate 12 can be pushed by the pushing component, so that the detection head 18 above the movable plate 12 is inserted into the core sample, and then the core sample is squeezed by the movable plate 12 so that the back plate 17 drives the detection head 18 above to be inserted into the slot 15, so that both groups of detection heads 18 are energized to detect the core sample.

[0029] The power-on component includes a fixed plate 3 and a slot 15. The slot 15 is arranged on the side wall of the fixed plate 3 and is at the same height as the detection head 18. The slot 15 is linearly connected to the detector 2. The fixed plate 3 is fixedly installed on the surface of the base plate 1. The slot 15 is plugged into the detection head 18. A buffer module is also provided under the side wall of the abutment plate 17.

[0030] By setting a fixed plate 3 and a slot 15, and the slot 15 is set on the side wall of the fixed plate 3, and the fixed plate 3 is fixedly installed on the surface of the base plate 1, the slot 15 is linearly connected to the detector 2, and a buffer module is also provided under the side wall of the abutment plate 17, so as to buffer the impact between the detection head 18 on the side wall of the abutment plate 17 and the slot 15 through the buffer module, thereby preventing damage to the equipment.

[0031] The buffer module includes a compression spring 16 . A slide groove 8 is provided on the surface of the bottom plate 1 . One end of the compression spring 16 is fixedly mounted to an inner wall of one side of the slide groove 8 , and the other end of the compression spring 16 is fixedly mounted to a side wall of the abutment plate 17 .

[0032] By setting one end of the compression spring 16 to be fixedly installed on one side inner wall of the slide groove 8, and the other end of the compression spring 16 to be fixedly installed on the side wall of the abutment plate 17, the compression spring 16 can buffer the impact force of the abutment plate 17 in the core sample extrusion, thereby protecting the slot 15.

[0033] The side walls of the support plate 17 and the movable plate 12 located inside the slide groove 8 are both slidably connected to the inner wall of the slide groove 8. By setting the lower side walls of the support plate 17 and the movable plate 12 to be slidably connected to the inner wall of the slide groove 8, the sliding direction of the support plate 17 and the movable plate 12 can be determined by the slide groove 8, thereby increasing the stability of the support plate 17 and the movable plate 12 when sliding.

[0034] The pushing assembly includes a screw 10, a thread groove 9 is opened on the inner wall of one side of the slide groove 8, the end of the screw 10 passes through the thread groove 9 and is rotatably arranged with the movable plate 12, the screw 10 is threadedly connected to the thread groove 9, and the movable plate 12 is located at the end of the outer wall of the base plate 1 and is fixed with a handle 11.

[0035] One end of the screw 10 is arranged to pass through the side wall of the bottom plate 1 and be rotatably connected to the side wall of the movable plate 12 located inside the slide groove 8. A handle 11 is provided at the other end of the screw 10, and the outer arc surface of the screw 10 is threadedly connected to the thread groove 9, so that by rotating the handle 11 clockwise, the handle 11 can push the movable plate 12 to move toward the abutment plate 17, squeeze the core sample, and vertically insert the detection head 18 into the core sample.

[0036] A support plate 19 is provided above the side wall of the movable plate 12, and the cable on the outside of the detection head 18 above the side wall of the movable plate 12 passes through the support plate 19 and is linearly connected to the detector 2. By setting the cable on the outside of the movable plate 12 to pass through the support plate 19 and be linearly connected to the detector 2, it is convenient to insert the core sample through the detection head 18 for detection and collect data through the detector 2.

[0037] The side walls on both sides of the bottom plate 1 are symmetrically slidably provided with fixing frames 4 , and the opposite side walls of the two sets of fixing frames 4 are provided with push rods 5 , and the working ends of the push rods 5 are fixedly installed with the clamping blocks 6 .

[0038] Upper clamping plates 7 are provided above the opposite side walls of the two groups of clamping blocks 6. Guide grooves 14 are respectively provided on the surface of the bottom plate 1 on both sides of the slide groove 8. The inner walls of the guide grooves 14 are respectively slidably connected with the guide blocks 13. The guide blocks 13 are respectively provided on the bottom surfaces of the clamping blocks 6. The core sample is fixed by setting two groups of push rods 5 to push the clamping blocks 6 to increase the stability of the core sample during detection, thereby avoiding shaking of the detection head 18 during detection and affecting the detection data.

[0039] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An auxiliary device for testing the dynamic elastic modulus of a concrete core sample using a forced resonance method, comprising a bottom plate (1), characterized in that: A detector (2) is provided on one side of the upper surface of the base plate (1), and an insertion device is slidably provided on one side of the detector (2) located on the upper surface of the base plate (1); The insertion device comprises a support plate (17) and a movable plate (12); the side walls of the support plate (17) and the movable plate (12) are both provided with detection heads (18), and the two groups of detection heads (18) are opposed to each other; a power supply component is further provided on the surface of the bottom plate (1) on the side of the support plate (17) facing the detector (2); and a pushing component is further provided below the side wall of the movable plate (12) away from the detector (2).

2. The auxiliary device for testing the dynamic elastic modulus of concrete core samples using the forced resonance method according to claim 1, characterized in that: The power supply assembly comprises a fixing plate (3) and a slot (15), wherein the slot (15) is arranged on the side wall of the fixing plate (3) and is located at the same height as the detection head (18), the slot (15) is linearly connected to the detector (2), the fixing plate (3) is fixedly mounted on the surface of the base plate (1), the slot (15) is plugged into the detection head (18), and a buffer module is further arranged below the side wall of the abutment plate (17).

3. The auxiliary device for testing the dynamic elastic modulus of concrete core samples using a forced resonance method according to claim 2, characterized in that: The buffer module includes a compression spring (16), a sliding groove (8) is provided on the surface of the bottom plate (1), one end of the compression spring (16) is fixedly mounted on an inner wall of one side of the sliding groove (8), and the other end of the compression spring (16) is fixedly mounted on the side wall of the abutment plate (17).

4. The auxiliary device for testing the dynamic elastic modulus of concrete core samples using the forced resonance method according to claim 3, characterized in that: The side walls of the abutting plate (17) and the movable plate (12) located inside the chute (8) are both slidably connected to the inner wall of the chute (8).

5. The auxiliary device for testing the dynamic elastic modulus of concrete core samples using the forced resonance method according to claim 4, characterized in that: The pushing assembly includes a screw rod (10), a thread groove (9) is provided on one inner wall of the slide groove (8), the end of the screw rod (10) passes through the thread groove (9) and is rotatably arranged with a movable plate (12), the screw rod (10) is threadedly connected to the thread groove (9), and a handle (11) is fixedly provided at the end of the movable plate (12) located on the outer wall of the bottom plate (1).

6. The auxiliary device for testing the dynamic elastic modulus of concrete core samples using the forced resonance method according to claim 5, characterized in that: A support plate (19) is provided above the side wall of the movable plate (12), and a cable outside the detection head (18) above the side wall of the movable plate (12) passes through the support plate (19) and is linearly connected to the detector (2).

7. The auxiliary device for testing the dynamic elastic modulus of concrete core samples using the forced resonance method according to claim 6, characterized in that: Both side walls of the bottom plate (1) are symmetrically slidably provided with fixing frames (4), and the opposite side walls of the two groups of fixing frames (4) are provided with push rods (5), and the working ends of the push rods (5) are fixedly mounted on the clamping blocks (6).

8. The auxiliary device for testing the dynamic elastic modulus of concrete core samples using the forced resonance method according to claim 7, characterized in that: Upper clamping plates (7) are provided above the opposite side walls of the two groups of clamping blocks (6), and guide grooves (14) are respectively provided on the surface of the bottom plate (1) on both sides of the slide groove (8), and the inner walls of the guide grooves (14) are respectively slidably connected to the guide blocks (13), and the guide blocks (13) are respectively provided on the bottom surfaces of the clamping blocks (6).

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