Auxiliary device for dynamic elastic modulus testing

Abstract

The utility model discloses an auxiliary device for dynamic elastic modulus detection, comprising: a fixed block, a first positioning member, a second positioning member, a third positioning member, a fourth positioning member, a fifth positioning member and a marking pen, wherein the fixed block is used to place a concrete sample, the first positioning member, the second positioning member, the third positioning member, the fourth positioning member and the fifth positioning member are used to position a first test point, a second test point, a third test point, a fourth test point and a fifth test point of the concrete sample respectively, and the marking pen is used to mark the first test point, the second test point, the third test point, the fourth test point and the fifth test point of the concrete sample. The utility model positions five test points of the concrete sample by the first positioning member, the second positioning member, the third positioning member, the fourth positioning member and the fifth positioning member, and then marks them by the marking pen, thereby improving the detection efficiency and detection accuracy of the dynamic elastic modulus of the concrete sample.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic elastic modulus detection, in particular to an auxiliary device for dynamic elastic modulus detection. Background Art

[0002] Concrete structures are used in various hydraulic structures such as dams, sluice gates, and hydropower stations due to their good integrity, high strength, easy material acquisition, and low cost. They will also occupy a major position in the future engineering construction field. However, during use, many concrete structures fail to reach their designed service life (i.e., premature destruction) due to insufficient durability. Freeze-thaw damage is one of the manifestations of insufficient durability. The dynamic elastic modulus test is a very important experiment in dynamic-thaw cycle detection. The change in the dynamic elastic modulus is mainly related to the change in the internal pores of the specimen, and can characterize the degree of damage to the internal structure of the specimen. When specifying the dynamic elastic modulus test for concrete in the national standard and water conservancy industry standard, five points are used for the test (i.e., point A, point B, point C, point D, and point E (such as Figure 1 As shown)), and by forced resonance method (such as Figure 2 The dynamic elastic modulus test is carried out on the sample (as shown), points C and E are used for lateral frequency measurement, points A and B are used for longitudinal frequency measurement, and point D is used to verify the natural frequency; among them: points A and B are the center points of the left and right sides of the sample, point C is the center point of the front side of the sample, point D is the horizontal center line of the front side of the sample and is 1 / 4 away from the right side, and point E is the horizontal center line of the front side of the sample and is 5mm-20mm away from the right side (the national standard GB / T50082-2009 requires it to be at the 5mm position, and the industry standard SLT352-2020 requires it not to exceed 20mm).

[0003] At present, the five points of the sample are marked by manual marking, that is, the five points are manually located by tools such as rulers and markers, and then marked. This operation has low marking efficiency and inaccurate marking positions, which will affect the detection efficiency and accuracy of the dynamic elastic modulus of the concrete sample. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in order to solve the technical problem that the existing manual marking affects the detection efficiency and detection accuracy of the dynamic elastic modulus of concrete samples, the utility model provides an auxiliary device for dynamic elastic modulus detection, which can improve the detection efficiency and detection accuracy of the dynamic elastic modulus of concrete samples by improving the marking method of concrete samples.

[0005] The technical solution adopted by the utility model to solve the technical problem is: an auxiliary device for dynamic elastic modulus detection, comprising: a fixed block, a first positioning piece, a second positioning piece, a third positioning piece, a fourth positioning piece, a fifth positioning piece and a marking pen, wherein the fixed block is used to place a concrete sample, the first positioning piece is embedded on the left side of the fixed block and is used to locate the first test point of the concrete sample, the second positioning piece is embedded on the right side of the fixed block and is used to locate the second test point of the concrete sample, the third positioning piece is embedded on the front side of the fixed block and is used to locate the third test point of the concrete sample The fourth positioning member is embedded in the front side of the fixing block and is located on the right side of the third positioning member, and is used to locate the fourth testing point of the concrete sample. The fifth positioning member is slidably installed on the front side of the fixing block and is located on the right side of the fourth positioning member, and is used to locate the fifth testing point of the concrete sample. The marking pen can be inserted into the first positioning member, the second positioning member, the third positioning member, the fourth positioning member and the fifth positioning member, and is used to mark the first testing point, the second testing point, the third testing point, the fourth testing point and the fifth testing point of the concrete sample.

[0006] Thus, the five test points of the concrete sample are positioned by the first positioning member, the second positioning member, the third positioning member, the fourth positioning member and the fifth positioning member, and then marked by a marking pen. Compared with the manual marking method, this method has a simple structure and is easy to operate. It can quickly and accurately find the five test points of the concrete sample, thereby improving the detection efficiency and detection accuracy of the dynamic elastic modulus of the concrete sample.

[0007] Furthermore, first through holes are provided on the left side, right side and front side of the fixing block, and the first positioning member, the second positioning member, the third positioning member and the fourth positioning member are inserted into the first through holes; wherein: there are four first through holes in total.

[0008] Furthermore, a first sliding groove is provided on the front side of the fixing block, and the fifth positioning member is inserted into the first sliding groove and is slidably connected to the fixing block.

[0009] Further, the first positioning member, the second positioning member, the third positioning member and the fourth positioning member are rotatably connected to the fixing block, and the first positioning member, the second positioning member, the third positioning member, the fourth positioning member and the fifth positioning member are all provided with a second through hole.

[0010] Furthermore, a connecting block is sleeved on the outside of the fifth positioning member, and is slidably connected to the fixing block via the connecting block, and the fifth positioning member is rotatably connected to the connecting block.

[0011] Furthermore, it also includes: a slider, one end of which is connected to the connecting block, the other end of which is inserted into the fixed block and slidably connected to the fixed block, and the slider is provided with an adjustment knob. Thus, the position of the fifth positioning member relative to the fixed block can be adjusted by the slider; the adjusted fifth positioning member can be fixed by the adjustment knob to ensure that when marking the fifth test point, the fifth positioning member will not move relative to the fixed block, and the marked fifth test point is accurate.

[0012] Furthermore, the fixing block is provided with a second sliding groove, and the other end of the sliding block is inserted into the second sliding groove and is slidably connected with the fixing block.

[0013] Furthermore, a scale is provided on the front side of the fixing block and above the first sliding slot, so that the distance to be adjusted by the fifth positioning member can be accurately positioned by the scale.

[0014] Furthermore, the fixing block is provided with a receiving cavity, and a fixing plate is provided in the receiving cavity near the right side of the fixing block.

[0015] Furthermore, it also includes: a first tightening knob and a second tightening knob, wherein the first tightening knob is located at the front side of the first positioning member, and the first tightening knob passes through the fixing block and is threadedly connected to the fixing block, and the second tightening knob is located at the left side of the third positioning member, and the second tightening knob passes through the fixing block and is threadedly connected to the fixing block. Thus, the concrete sample is installed and fixed by the fixing plate, the first tightening knob and the second tightening knob, ensuring that the concrete sample remains stable in the fixing block without relative sliding, and further ensuring that the first test point, the second test point, the third test point, the fourth test point and the fifth test point of the concrete sample are accurately marked.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The five test points of the concrete sample are positioned by the first positioning member, the second positioning member, the third positioning member, the fourth positioning member and the fifth positioning member, and then marked by a marking pen. Compared with the manual marking method, this method has a simple structure and is easy to operate. It can quickly and accurately find the five test points of the concrete sample, thereby improving the detection efficiency and detection accuracy of the dynamic elastic modulus of the concrete sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is the location diagram of five points of concrete specimen;

[0020] Figure 2 This is the principle diagram of dynamic elastic modulus detection;

[0021] Figure 3 It is a structural schematic diagram of the auxiliary device for dynamic elastic modulus detection of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the fixing block of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the installation of the fifth positioning member, the connecting block, the sliding block and the adjusting knob of the utility model;

[0024] Figure 6 This is a diagram showing the installation effect of the concrete sample marking of the utility model.

[0025] In the figure: 1, fixed block; 101, first through hole; 102, first slide groove; 103, second slide groove; 104, scale; 105, accommodating chamber; 106, fixed plate; 2, concrete sample; 3, first positioning member; 4, second positioning member; 5, third positioning member; 6, fourth positioning member; 7, fifth positioning member; 701, connecting block; 8, marking pen; 9, second through hole; 10, slider; 11, adjusting knob; 12, first tightening knob; 13, second tightening knob. DETAILED DESCRIPTION

[0026] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0027] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 3 to 6 , which is the best embodiment of the utility model. The auxiliary device for dynamic elastic modulus detection of the embodiment includes: a fixed block 1, a first positioning member 3, a second positioning member 4, a third positioning member 5, a fourth positioning member 6, a fifth positioning member 7 and a marking pen 8. The fixed block 1 is used to place the concrete sample 2. The first positioning member 3 is embedded in the left side of the fixed block 1 and is used to locate the first test point of the concrete sample 2. The second positioning member 4 is embedded in the right side of the fixed block 1 and is used to locate the second test point of the concrete sample 2. The third positioning member 5 is embedded in the front side of the fixed block 1 and is used to locate the concrete sample 2. The fourth positioning member 6 is embedded in the front side of the fixing block 1 and is located on the right side of the third positioning member 5, and is used to locate the fourth testing point of the concrete sample 2. The fifth positioning member 7 is slidably installed on the front side of the fixing block 1 and is located on the right side of the fourth positioning member 6, and is used to locate the fifth testing point of the concrete sample 2. The marking pen 8 can be inserted into the first positioning member 3, the second positioning member 4, the third positioning member 5, the fourth positioning member 6 and the fifth positioning member 7, and is used to mark the first testing point, the second testing point, the third testing point, the fourth testing point and the fifth testing point of the concrete sample 2. Thus, the five testing points of the concrete sample 2 are positioned by the first positioning member 3, the second positioning member 4, the third positioning member 5, the fourth positioning member 6 and the fifth positioning member 7, and then marked by the marking pen 8. Compared with the manual marking method, this method has a simple structure and is easy to operate. It can quickly and accurately find the five testing points of the concrete sample 2, thereby improving the detection efficiency and detection accuracy of the dynamic elastic modulus of the concrete sample 2.

[0030] In other words, when marking, just insert the marker pen 8 into the corresponding positioning piece to mark the position of the concrete sample 2 relative to the positioning piece. In this way, the five test points of the concrete sample 2 can be found quickly and accurately, thereby improving the detection efficiency and detection accuracy of the dynamic elastic modulus of the concrete sample 2.

[0031] Specifically, the first test point is point A, the second test point is point B, the third test point is point C, the fourth test point is point D, and the fifth test point is point E.

[0032] In this embodiment, the left side, right side and front side of the fixed block 1 are all provided with first through holes 101, and the first positioning member 3, the second positioning member 4, the third positioning member 5 and the fourth positioning member 6 are inserted into the first through holes 101; wherein: there are four first through holes 101. Specifically, the four first through holes 101 are divided into first through hole No. 1, first through hole No. 2, first through hole No. 3 and first through hole No. 4, the first through hole No. 1 is located on the left side of the fixed block 1, the first through hole No. 2 is located on the right side of the fixed block 1, the first through hole No. 3 and the first through hole No. 4 are located on the front side of the fixed block 1, and the first through hole No. 4 is located on the right side of the first through hole No. 3.

[0033] In this embodiment, the first positioning member 3, the second positioning member 4, the third positioning member 5 and the fourth positioning member 6 are rotatably connected to the fixed block 1, and the first positioning member 3, the second positioning member 4, the third positioning member 5, the fourth positioning member 6 and the fifth positioning member 7 are all provided with a second through hole 9.

[0034] In this embodiment, the front side of the fixed block 1 is provided with a first slide groove 102, the fifth positioning member 7 is inserted into the first slide groove 102 and is slidably connected with the fixed block 1, the outer sleeve of the fifth positioning member 7 is provided with a connecting block 701, and is slidably connected with the fixed block 1 through the connecting block 701, and the fifth positioning member 7 is rotatably connected with the connecting block 701; it also includes: a slider 10, one end of the slider 10 is connected with the connecting block 701, the other end of the slider 10 is inserted into the fixed block 1 and is slidably connected with the fixed block 1, and the slider 10 is provided with an adjustment knob 11; the fixed block 1 is provided with a second slide groove 103, the other end of the slider 10 is inserted into the second slide groove 103 and is slidably connected with the fixed block 1. Therefore, the position of the fifth positioning member 7 relative to the fixed block 1 can be adjusted by the slider 10; the adjusted fifth positioning member 7 can be fixed by the adjustment knob 11, ensuring that when marking the fifth test point, the fifth positioning member 7 will not move relatively, and the marked fifth test point is accurate.

[0035] In this embodiment, a scale 104 is provided on the front side of the fixing block 1 and above the first sliding groove 102. Thus, the scale 104 can accurately locate the distance to be adjusted by the fifth positioning member 7.

[0036] In this embodiment, the fixing block 1 is provided with a receiving cavity 105, and a fixing plate 106 is provided in the receiving cavity 105 near the right side of the fixing block 1; and further includes: a first tightening knob 12 and a second tightening knob 13, wherein the first tightening knob 12 is located in front of the first positioning member 3, and the first tightening knob 12 passes through the fixing block 1 and is threadedly connected to the fixing block 1, and the second tightening knob 13 is located on the left side of the third positioning member 5, and the second tightening knob 13 passes through the fixing block 1 and is threadedly connected to the fixing block 1. Thus, the concrete sample 2 is installed and fixed by the fixing plate 106, the first tightening knob 12 and the second tightening knob 13, ensuring that the concrete sample 2 remains stable in the fixing block 1 without relative sliding, and further ensuring that the first test point, the second test point, the third test point, the fourth test point and the fifth test point of the concrete sample 2 are accurately marked.

[0037] The marking process of the concrete sample 2 of the utility model is: first, the concrete sample 2 to be marked is placed in the accommodating cavity 105, and the first tightening knob 12 and the second tightening knob 13 are rotated to install and fix the concrete sample 2; then, the position of the fifth positioning member 7 is adjusted with the cooperation of the slider 10 and the adjusting knob 11; preferably, the marking pen 8 is inserted into the first positioning member 3, the second positioning member 4, the third positioning member 5, the fourth positioning member 6 and the fifth positioning member 7 in sequence, and the marking pen 8 is rotated, so that the first test point (i.e., point A), the second test point (i.e., point B), the third test point (i.e., point C), the fourth test point (i.e., point D) and the fifth test point (i.e., point E) of the concrete sample 2 to be marked can be marked in sequence.

[0038] To sum up, the utility model locates the five test points of the concrete sample 2 by the first positioning member 3, the second positioning member 4, the third positioning member 5, the fourth positioning member 6 and the fifth positioning member 7, and then marks them by the marking pen 8. Compared with the manual marking method, this method has a simple structure and is easy to operate. It can quickly and accurately find the five test points of the concrete sample 2, thereby improving the detection efficiency and detection accuracy of the dynamic elastic modulus of the concrete sample 2.

[0039] The above description is based on the ideal embodiment of the utility model. Through the above description, relevant staff can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of the utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An auxiliary device for dynamic elastic modulus detection, characterized in that: include: A fixed block (1), wherein the fixed block (1) is used to place a concrete sample (2); A first positioning member (3), the first positioning member (3) being embedded on the left side of the fixing block (1) and used for positioning a first testing point of the concrete sample (2); A second positioning member (4), the second positioning member (4) being embedded on the right side of the fixing block (1) and used for positioning a second test point of the concrete sample (2); A third positioning member (5), the third positioning member (5) being embedded in the front side of the fixing block (1) and used for positioning a third test point of the concrete sample (2); a fourth positioning member (6), the fourth positioning member (6) being embedded in the front side of the fixing block (1) and located on the right side of the third positioning member (5), and being used for positioning a fourth test point of the concrete sample (2); a fifth positioning member (7), the fifth positioning member (7) being slidably mounted on the front side of the fixing block (1) and being located on the right side of the fourth positioning member (6), and being used for positioning the fifth test point of the concrete sample (2); A marking pen (8), wherein the marking pen (8) can be inserted into the first positioning member (3), the second positioning member (4), the third positioning member (5), the fourth positioning member (6) and the fifth positioning member (7), and is used to mark a first test point, a second test point, a third test point, a fourth test point and a fifth test point of the concrete sample (2).

2. The auxiliary device for dynamic elastic modulus detection according to claim 1, characterized in that: The left side, the right side and the front side of the fixing block (1) are all provided with first through holes (101), and the first positioning member (3), the second positioning member (4), the third positioning member (5) and the fourth positioning member (6) are inserted into the first through holes (101); Wherein: there are four first through holes (101) in total.

3. The auxiliary device for dynamic elastic modulus detection according to claim 1, characterized in that: A first sliding groove (102) is provided on the front side of the fixing block (1), and the fifth positioning member (7) is inserted into the first sliding groove (102) and is slidably connected to the fixing block (1).

4. The auxiliary device for dynamic elastic modulus detection according to claim 1, characterized in that: The first positioning member (3), the second positioning member (4), the third positioning member (5) and the fourth positioning member (6) are rotatably connected to the fixed block (1), and the first positioning member (3), the second positioning member (4), the third positioning member (5), the fourth positioning member (6) and the fifth positioning member (7) are all provided with a second through hole (9).

5. The auxiliary device for dynamic elastic modulus detection according to claim 3, characterized in that: The fifth positioning member (7) is sleeved with a connecting block (701) on its exterior and is slidably connected to the fixing block (1) via the connecting block (701). The fifth positioning member (7) is rotatably connected to the connecting block (701).

6. The auxiliary device for dynamic elastic modulus detection according to claim 5, characterized in that: Also includes: A slider (10), one end of the slider (10) is connected to the connecting block (701), the other end of the slider (10) is inserted into the fixed block (1) and is slidably connected to the fixed block (1), and the slider (10) is provided with an adjustment knob (11).

7. The auxiliary device for dynamic elastic modulus detection according to claim 6, characterized in that: The fixed block (1) is provided with a second sliding groove (103), and the other end of the sliding block (10) is inserted into the second sliding groove (103) and is slidably connected to the fixed block (1).

8. The auxiliary device for dynamic elastic modulus detection according to claim 7, characterized in that: A scale (104) is provided on the front side of the fixed block (1) and above the first sliding groove (102).

9. The auxiliary device for dynamic elastic modulus detection according to claim 1, characterized in that: The fixing block (1) is provided with a receiving cavity (105), and a fixing plate (106) is provided in the receiving cavity (105) on the right side close to the fixing block (1).

10. The auxiliary device for dynamic elastic modulus detection according to claim 1, characterized in that: Also includes: A first tightening knob (12) and a second tightening knob (13), wherein the first tightening knob (12) is located on the front side of the first positioning member (3), and the first tightening knob (12) passes through the fixing block (1) and is threadedly connected to the fixing block (1), and the second tightening knob (13) is located on the left side of the third positioning member (5), and the second tightening knob (13) passes through the fixing block (1) and is threadedly connected to the fixing block (1).

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