Auxiliary device for testing compressive elastic modulus of concrete

Abstract

The utility model discloses a concrete compression elastic modulus test auxiliary device, and belongs to the technical field of civil engineering, the concrete compression elastic modulus test auxiliary device comprises a marking plate and two positioning sleeves, the two positioning sleeves are respectively located at the top and the bottom of a concrete test piece, the marking plate can be installed between the two positioning sleeves, and the marking plate is located between the two positioning sleeves. A moving groove is formed in the side face, close to the concrete test piece, of the marking plate, the marking plate is slidably provided with a marking block in the thickness direction of the marking plate through the moving groove, and the marking block makes contact with the surface of the concrete test piece to form a frame-shaped mark. According to the invention, the pasting position of the resistance strain gauge can be accurately positioned, the test accuracy is improved, the operation is convenient, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of civil engineering, in particular to a concrete compressive elastic modulus test auxiliary device. BACKGROUND

[0002] In the field of civil engineering, the compressive elastic modulus of concrete is an important parameter for measuring its stiffness, and is crucial for ensuring the accuracy and safety of structural design. The elastic modulus reflects the relationship between stress and strain of concrete under compression, and has a significant influence on the calculation of structural deformation, crack control and temperature stress.

[0003] In the concrete compressive elastic modulus test, resistance strain gauges are usually attached to the designated positions of the concrete test piece to measure the strain generated during compression. If the axial compressive elastic modulus is measured, the strain gauges should be installed on both sides of the concrete test piece and symmetrically with the two ends of the concrete test piece. Therefore, before the concrete compressive elastic modulus test is performed, the positioning points for installing the resistance strain gauges need to be measured. In the prior art, the positioning points are usually determined by manual measurement, which is time-consuming and laborious and prone to measurement errors. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the problem of time-consuming and laborious measurement of positioning points in the concrete compressive elastic modulus test and the problem of errors, the application provides a concrete compressive elastic modulus test auxiliary device.

[0005] The concrete compressive elastic modulus test auxiliary device provided by the application adopts the following technical scheme:

[0006] A concrete compressive elastic modulus test auxiliary device comprises a marking plate and two positioning sleeves, the two positioning sleeves are respectively located at the top and bottom of the concrete test piece, the marking plate can be installed between the two positioning sleeves, the marking plate is provided with a moving groove near the side surface of the concrete test piece, the marking plate is slidably installed with an engraved block along the thickness direction of the marking plate, and the engraved block forms a frame-shaped mark after being in contact with the surface of the concrete test piece.

[0007] By adopting the above technical scheme, the marking plate is installed between the two positioning sleeves, the marking plate is arranged along the center line of the side surface of the concrete test piece, the engraved block is located at the center position of the side surface of the concrete test piece, the engraved block is pressed to make the engraved block in contact with the surface of the concrete test piece, and then a frame-shaped mark is formed on the surface of the concrete test piece. Only the resistance strain gauges need to be attached in the frame, which can accurately position the attachment position of the resistance strain gauges, improve the accuracy of the test, and is convenient and time-saving and labor-saving.

[0008] Preferably, the inner wall of the positioning sleeve is in close contact with the outer side of the concrete test piece, the outer side of the positioning sleeve is provided with a mounting groove, the two ends of the marker plate are respectively fixed with mounting blocks, the mounting blocks can be inserted into the mounting groove, the opposite inner sides of the two positioning sleeves are respectively provided with connecting through grooves, and the marker plate can be inserted into the connecting through grooves.

[0009] By adopting the above technical scheme, the close cooperation of the positioning sleeve with the concrete test piece and the clamping fixation between the marker plate and the positioning sleeve ensure the stability of the marker plate in the test process and reduce the possibility of position deviation of the marker plate.

[0010] Preferably, the two positioning sleeves are respectively a top cover and a bottom cover, the top surface of the top cover is fixed with a limiting plate, and the bottom surface of the limiting plate can be in close contact with the top surface of the concrete test piece.

[0011] By adopting the above technical scheme, the limiting plate of the top cover ensures the close contact between the top of the concrete test piece and the positioning sleeve, and prevents the possibility of deviation of the positioning sleeve.

[0012] Preferably, the marker plate is slidably installed with a moving block along the thickness direction of the marker plate through the moving groove, the side of the moving block close to the concrete test piece is fixed with a magnetic block one, the side of the marking block away from the concrete test piece is fixed with a magnetic block two, and the magnetic block one and the magnetic block two can be attracted to each other.

[0013] By adopting the above technical scheme, the mutual attraction of the magnetic block one and the magnetic block two provides a stable fixing mode for the marking block, simplifies the installation process of the marking block, and ensures the consistency of the contact between the marking block and the surface of the concrete test piece.

[0014] Preferably, the side of the moving block away from the marking block is provided with a connecting rod, the side of the marker plate away from the concrete test piece is provided with a guide through hole in communication with the moving groove, and the connecting rod is arranged in the guide through hole.

[0015] By adopting the above technical scheme, the design of the connecting rod and the guide through hole makes the adjustment of the moving block more convenient and accurate, so that the contact between the marking block and the concrete test piece can be quickly realized.

[0016] Preferably, the side of the moving block close to the connecting rod is provided with a threaded hole, the end of the connecting rod close to the moving block is fixed with a threaded stud, and the threaded stud is threadedly connected with the moving block through the threaded hole.

[0017] By adopting the above technical scheme, the threaded connection of the threaded hole and the threaded stud provides an adjustable fixing mode for the moving block and the connecting rod, so as to facilitate the disassembly of the connecting rod.

[0018] Preferably, the two sides of the moving block are respectively fixed with reset blocks, the inner wall of the moving groove is provided with reset grooves, and the reset blocks are slidably connected with the marking plate along the thickness direction of the marking plate through the reset grooves.

[0019] By adopting the above technical scheme, the reset blocks and the reset grooves are designed to make the moving block flexibly slide in the marking plate, so as to facilitate the adjustment of the position of the marking block.

[0020] Preferably, the side of the reset block away from the concrete specimen is fixed with a reset spring, and the end of the reset spring away from the reset block is fixedly connected with the inner wall of the reset groove.

[0021] By adopting the above technical scheme, the reset spring provides the reset block with the function of automatic reset, reduces the manual adjustment in the operation process, and improves the automation degree and use convenience of the device.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The marking plate is installed between the two positioning sleeves, the marking plate is arranged along the side surface center line of the concrete specimen, the marking block is located at the center position of the side surface of the concrete specimen, the marking block is pressed to make the marking block contact with the surface of the concrete specimen, and then a frame-shaped mark is formed on the surface of the concrete specimen, so that the resistance strain gauge can be adhered in the frame-shaped mark, the adhesion position of the resistance strain gauge can be accurately positioned, the accuracy of the test is improved, and the operation is convenient, time-saving and labor-saving;

[0024] 2. The mutual attraction of the magnetic block one and the magnetic block two provides a stable fixing mode for the marking block, simplifies the installation process of the marking block, and ensures the consistency of the contact between the marking block and the surface of the concrete specimen;

[0025] 3. The design of the connecting rod and the guide through hole makes the adjustment of the moving block more convenient and accurate, so that the contact between the marking block and the concrete specimen can be quickly realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic view of the overall structure of the concrete compressive elastic modulus test auxiliary device of the embodiment of the present application.

[0027] Figure 2 is a schematic view of the structure of the positioning sleeve in the concrete compressive elastic modulus test auxiliary device of the embodiment of the present application.

[0028] Figure 3 is a schematic view of the structure of the marking plate in the concrete compressive elastic modulus test auxiliary device of the embodiment of the present application.

[0029] Figure 4is a sectional view of a marking plate in a concrete compressive elastic modulus test auxiliary device according to an embodiment of the present application.

[0030] Figure 5 is an installation schematic diagram of an engraved block and a moving block in a concrete compressive elastic modulus test auxiliary device according to an embodiment of the present application.

[0031] Label: 1, positioning sleeve; 11, top cover; 111, limiting plate; 12, bottom cover; 13, inclined surface; 14, installation groove; 15, connecting through groove; 2, marking plate; 21, installation block; 22, moving groove; 23, moving block; 231, magnetic block two; 232, threaded hole; 24, reset block; 25, reset groove; 26, reset spring; 3, engraved block; 31, magnetic block one; 4, connecting rod; 41, guide through hole; 42, stud. DETAILED DESCRIPTION

[0032] The following will be described in detail below with reference to the accompanying drawings Figures 1-5 The present application will be further described in detail.

[0033] The present application discloses a concrete compressive elastic modulus test auxiliary device. Referring to Figure 1 and Figure 2 , the concrete compressive elastic modulus test auxiliary device comprises a marking plate 2 and two positioning sleeves 1, the inner wall of the positioning sleeve 1 is attached to the outer side surface of the concrete test piece, and the marking plate 2 can be installed between the two positioning sleeves 1. The inner side of the bottom surface of the positioning sleeve 1 is provided with an inclined surface 13, so as to facilitate the positioning sleeve 1 to be sleeved on the outer side of the concrete test piece. The two positioning sleeves 1 are respectively a top cover 11 and a bottom cover 12, the top cover 11 is sleeved on the top of the concrete test piece, the bottom cover 12 is sleeved on the bottom of the concrete test piece, and the bottom surface of the bottom cover 12 is coplanar with the bottom surface of the concrete test piece. The top surface of the top cover 11 is fixed with a limiting plate 111, and the bottom surface of the limiting plate 111 is attached to the top surface of the concrete test piece.

[0034] Referring to Figure 2 and Figure 3 , the four outer side surfaces of the positioning sleeve 1 are respectively provided with an installation groove 14, and the opposite inner sides of the two positioning sleeves 1 are respectively provided with a connecting through groove 15. The two ends of the marking plate 2 are respectively fixed with an installation block 21, the two installation blocks 21 are respectively inserted into the installation grooves 14 of the top cover 11 and the bottom cover 12, and at the same time, the marking plate 2 is inserted into the connecting through groove 15, so that the marking plate 2 is vertically arranged, and the marking plate 2 is located at the middle line position of the side surface of the concrete test piece.

[0035] Referring to Figure 4 and Figure 5The side of the marking plate 2 close to the concrete test piece is provided with a moving groove 22, and the moving block 23 is slidably installed on the marking plate 2 along the thickness direction of the marking plate 2 through the moving groove 22. The moving block 23 is installed with the engraved block 3 close to the side of the concrete test piece, and the engraved block 3 forms a frame-shaped mark after being in contact with the surface of the concrete test piece. The magnetic block one 31 is embedded and fixed on the side of the moving block 23 close to the engraved block 3, and the magnetic block two 231 is embedded and fixed on the side of the engraved block 3 close to the moving block 23, and the magnetic block one 31 and the magnetic block two 231 can be attracted to each other.

[0036] The magnetic block one 31 and the magnetic block two 231 are attracted to each other, so that the engraved block 3 is connected with the moving block 23, so as to facilitate the installation and replacement of the engraved block 3.

[0037] Referring to Figure 4 and Figure 5 The two sides of the moving block 23 are respectively fixed with the reset blocks 24, the inner wall of the moving groove 22 is provided with the reset groove 25, and the reset blocks 24 are slidably matched with the marking plate 2 along the thickness direction of the marking plate 2 through the reset groove 25. The reset spring 26 is fixed on the side of the reset block 24 away from the concrete test piece, and the end of the reset spring 26 away from the reset block 24 is fixedly connected with the inner wall of the reset groove 25. The connecting rod 4 is installed on the side of the moving block 23 away from the engraved block 3, the side of the marking plate 2 away from the concrete test piece is provided with the guide through hole 41 communicated with the moving groove 22, and the connecting rod 4 is inserted into the guide through hole 41. The side of the moving block 23 close to the connecting rod 4 is provided with the threaded hole 232, and the end of the connecting rod 4 close to the moving block 23 is fixedly provided with the threaded hole 232. The threaded hole 232 is threadedly connected with the moving block 23 through the threaded hole 232.

[0038] The connecting rod 4 is inserted into the guide through hole 41, and then the threaded rod 42 is inserted into the threaded hole 232, so as to realize the connection and fixation of the connecting rod 4 and the moving block 23. After the installation of the marking plate 2 and the two positioning sleeves 1 is completed, the connecting rod 4 is pressed, the connecting rod 4 drives the engraved block 3 to move through the moving block 23, so that the engraved block 3 is in contact with the concrete test piece and forms a frame-shaped mark.

[0039] The implementation principle of the concrete compressive elastic modulus test auxiliary device is that the marking plate 2 is installed between the two positioning sleeves 1, the marking plate 2 is arranged along the side surface center line of the concrete test piece, the engraved block 3 is located at the center position of the side surface of the concrete test piece, the engraved block 3 is pressed to be in contact with the surface of the concrete test piece, and then a frame-shaped mark is formed on the surface of the concrete test piece. Only the resistance strain gauge needs to be adhered in the frame, the adhesion position of the resistance strain gauge can be accurately positioned, the accuracy of the test is improved, and the operation is convenient, time-saving and labor-saving.

[0040] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An auxiliary device for testing the compressive modulus of elasticity of concrete, characterized in that: The test specimen includes a marking plate (2) and two positioning sleeves (1). The two positioning sleeves (1) are located at the top and bottom of the concrete specimen, respectively. The marking plate (2) can be installed between the two positioning sleeves (1). The marking plate (2) has a moving groove (22) on its side near the concrete specimen. The marking plate (2) slides along its own thickness direction through the moving groove (22) to install an engraving block (3). The engraving block (3) forms a frame mark after contacting the surface of the concrete specimen.

2. The auxiliary device for testing the compressive elastic modulus of concrete according to claim 1, characterized in that: The inner wall of the positioning sleeve (1) is in contact with the outer side of the concrete specimen. The outer side of the positioning sleeve (1) is provided with an installation groove (14). The two ends of the marking plate (2) are respectively fixed with mounting blocks (21). The mounting blocks (21) can be inserted into the installation groove (14). The two positioning sleeves (1) are respectively provided with connecting through grooves (15) on their opposite inner sides. The marking plate (2) can be inserted into the connecting through grooves (15).

3. The auxiliary device for testing the compressive modulus of elasticity of concrete according to claim 1, characterized in that: The two positioning sleeves (1) are a top cover (11) and a bottom cover (12), respectively. A limiting plate (111) is fixed on the top surface of the top cover (11), and the bottom surface of the limiting plate (111) can fit against the top surface of the concrete specimen.

4. The auxiliary device for testing the compressive elastic modulus of concrete according to claim 1, characterized in that: The marking plate (2) is slidably mounted with a moving block (23) along its own thickness direction via the moving groove (22). A magnetic block (31) is fixed on the side of the moving block (23) close to the concrete specimen. A magnetic block (231) is fixed on the side of the marking block (3) away from the concrete specimen. The magnetic block (31) and the magnetic block (231) can attract each other.

5. The auxiliary device for testing the compressive elastic modulus of concrete according to claim 4, characterized in that: A connecting rod (4) is installed on the side of the moving block (23) away from the engraving block (3). A guide hole (41) communicating with the moving groove (22) is opened on the side of the marking plate (2) away from the concrete specimen. The connecting rod (4) passes through the guide hole (41).

6. The auxiliary device for testing the compressive modulus of elasticity of concrete according to claim 5, characterized in that: The movable block (23) has a threaded hole (232) on its side near the connecting rod (4), and a stud (42) is fixed to the end of the connecting rod (4) near the movable block (23). The stud (42) is threadedly connected to the movable block (23) through the threaded hole (232).

7. The auxiliary device for testing the compressive elastic modulus of concrete according to claim 4, characterized in that: The moving block (23) has a reset block (24) fixed on both sides. The inner wall of the moving groove (22) is provided with a reset groove (25). The reset block (24) slides and cooperates with the marking plate (2) along the thickness direction of the marking plate (2) through the reset groove (25).

8. The auxiliary device for testing the compressive elastic modulus of concrete according to claim 7, characterized in that: A reset spring (26) is fixed to the side of the reset block (24) away from the concrete specimen, and the end of the reset spring (26) away from the reset block (24) is fixedly connected to the inner wall of the reset groove (25).

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