A high toughness concrete tensile test fixture

Abstract

This utility model provides a high-toughness concrete tensile test fixture, belonging to the field of concrete tensile testing technology. Addressing the problems of rigid sample clamping easily leading to sample damage and cumbersome sample alignment affecting work efficiency, this utility model includes a base. Alignment mechanisms are provided on both sides of the center of the base. A movable groove is formed in the center of the base, and a second movable plate is connected inside the movable groove. A clamping mechanism is provided above the second movable plate, and a second spring is connected to the other side of the second movable plate. A cross-shaped groove is provided above the base, allowing the clamping mechanism and alignment mechanism to move along the XY axes, thereby automatically centering the sample. Furthermore, the clamping mechanism provides flexible clamping, ensuring clamping stability.

Description

Technical Field

[0001] This utility model relates to the field of concrete tensile testing technology, specifically to a high-toughness concrete tensile testing fixture. Background Technology

[0002] High-toughness concrete, as a new type of building material, is widely used in bridge engineering, high-rise buildings, and seismic structures due to its excellent tensile strength, crack resistance, and durability. Tensile strength is a key indicator for evaluating the mechanical properties of concrete, and its testing accuracy directly affects the reliability of engineering structural design. However, existing concrete tensile strength testing fixtures still have the following problems in use; Existing fixtures often use rigid clamping during use, resulting in uneven clamping force. Rigid clamping can easily lead to damage to the clamped samples. Furthermore, during the clamping process, workers need to manually align both sides, which leads to low work efficiency and affects subsequent use.

[0003] In summary, it is particularly important to design a clamp that can hold the sample without damaging it and automatically align the two sides of the sample. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems in the background art where rigid clamping of samples easily leads to sample damage, sample alignment is cumbersome, and affects work efficiency.

[0005] Based on the above technical concept, the technical solution adopted by this utility model is as follows: by setting a cross-shaped groove on the top of the base, the clamping mechanism and the alignment mechanism can move above the XY axis, thereby automatically centering the sample, and using the clamping mechanism for flexible clamping to ensure clamping stability.

[0006] A high-toughness concrete tensile test fixture includes a base, with alignment mechanisms on both sides of the center of the base, a movable groove in the center of the base, a second movable plate connected inside the movable groove, a clamping mechanism above the second movable plate, and a second spring connected to the other side of the second movable plate.

[0007] Further defining the above technical solution, the alignment mechanism includes a baffle, a first movable plate, a first spring, and side plates. The side plates are symmetrically distributed on both sides of the center of the base. Mounting plates are also connected to both sides of the base. The side plates limit the position of the baffle, facilitating subsequent alignment work.

[0008] Further defining the above technical solution, the baffle and the first movable plate are installed as an integral unit, the first movable plate is connected to the side plate by a sliding connection, and the first movable plate forms a spring reset structure with the side plate through a first spring. The first movable plate is reset by the first spring, so that the baffle above it can automatically center the sample.

[0009] Further defining the above technical solution, the clamping mechanism includes a connecting plate, a clamping plate, a clamping airbag, and an insertion block. The connecting plate is symmetrically distributed on both sides of the center of the base and is connected to the clamping plate to ensure subsequent clamping operations.

[0010] Further defining the above technical solution, clamping plates are symmetrically distributed on both sides of the connecting plate, and clamping airbags are symmetrically distributed on both sides of the clamping plates. The clamping airbags on both sides are controlled by different drives, so that the outside is tight and the middle is loose, ensuring stable clamping while preventing damage to the sample.

[0011] Further defining the above technical solution, the connecting plate and the insertion block engage with each other, the insertion block is a magnetic adsorption magnet, the insertion block and the second movable plate are installed as a single unit, and the connecting plate can be quickly disassembled through the insertion block for easy maintenance and replacement.

[0012] Further defining the above technical solution, the center of the movable groove coincides with the center of the base, the movable groove is connected to the second movable plate by a sliding connection, and limit blocks are symmetrically distributed on both sides of the second movable plate. The limit blocks enable the second movable plate to move stably and adapt to use under different conditions.

[0013] Further defining the above technical solution, second springs are symmetrically distributed on the outer side of the second movable plate. The second movable plate and the base form a spring reset structure through the second springs. The second movable plate is automatically centered by the second springs to ensure its use.

[0014] Compared with the prior art, the beneficial effects of this utility model are: (1) Automatic alignment: A cross-shaped structure is formed by a movable groove on the top of the base and the first movable plate. The first spring and the second spring on the X and Y axes respectively drive the sample to be in the center of the base, eliminating the need for manual alignment by staff and increasing detection efficiency.

[0015] (2) Stable clamping and avoidance of sample damage: Two sets of clamping airbags with different drives are set on the inner side of the clamping plate. During the clamping process, the outer airbag tightly clamps the edge of the sample, while the inner airbag clamps more loosely, thus preventing sample damage while ensuring stable clamping. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view schematic diagram of a high-toughness concrete tensile test fixture according to the present invention; Figure 2 This is a top view schematic diagram of a high-toughness concrete tensile test fixture according to the present invention; Figure 3 This is a side view of the tensile testing fixture for high-toughness concrete according to the present invention. Figure 4 This utility model relates to a high-toughness concrete tensile testing fixture. Figure 1 Enlarged structural diagram at point A in the middle.

[0018] The components include: 1. Base; 2. Alignment mechanism; 201. Baffle; 202. First movable plate; 203. First spring; 204. Side plate; 3. Clamping mechanism; 301. Connecting plate; 302. Clamping plate; 303. Clamping airbag; 304. Insertion block; 4. Mounting plate; 5. Movable groove; 6. Second movable plate; 7. Second spring; 8. Limiting block. Detailed Implementation

[0019] The following is in conjunction with the appendix Figures 1-4 The present invention will be described in further detail below.

[0020] This embodiment provides a high-toughness concrete tensile testing fixture, such as... Figure 1 and Figure 2 As shown, the device includes a base 1, with alignment mechanisms 2 arranged on both sides of the center of the base 1. The alignment mechanism 2 includes a baffle 201, a first movable plate 202, a first spring 203, and a side plate 204. The side plates 204 are symmetrically distributed on both sides of the center of the base 1. Mounting plates 4 are also connected to both sides of the base 1. The side plates 204 limit the baffle 201 to facilitate subsequent alignment work. The baffle 201 and the first movable plate 202 are installed as a single unit. The connection between the first movable plate 202 and the side plate 204 is a sliding connection. The first movable plate 202 and the side plate 204 form a spring reset structure through the first spring 203. The first spring 203 drives the first movable plate 202 to reset, so that the baffle 201 above it drives the sample to automatically center.

[0021] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment of the utility model, a movable groove 5 is provided in the center of the base 1. A second movable plate 6 is connected inside the movable groove 5. A second spring 7 is also connected to the other side of the second movable plate 6. The center of the movable groove 5 coincides with the center of the base 1. The movable groove 5 and the second movable plate 6 are connected by a sliding connection. Limiting blocks 8 are symmetrically distributed on both sides of the second movable plate 6. The limiting blocks 8 enable the second movable plate 6 to move stably and adapt to different situations. A second spring 7 is symmetrically distributed on the outer side of the second movable plate 6. The second movable plate 6 and the base 1 form a spring reset structure through the second spring 7. The second spring 7 drives the second movable plate 6 to automatically center itself, ensuring its use.

[0022] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment of the present invention, a clamping mechanism 3 is provided above the second movable plate 6. The clamping mechanism 3 includes a connecting plate 301, a clamping plate 302, a clamping airbag 303, and an insertion block 304. The connecting plate 301 is symmetrically distributed on both sides of the center of the base 1. The clamping plate 302 is connected to the connecting plate 301 to ensure subsequent clamping work. The clamping plate 302 is symmetrically distributed on both sides of the connecting plate 301. The clamping airbag 303 is symmetrically distributed on both sides of the clamping plate 302. The clamping airbags 303 on both sides are controlled by different drives. The different clamping airbags 303 make the outside tight and the middle loose, ensuring stable clamping while preventing damage to the sample. The connecting plate 301 and the insertion block 304 are interlocked. The insertion block 304 is a magnetic adsorption magnet. The insertion block 304 is integrated with the second movable plate 6. The connecting plate 301 can be quickly disassembled through the insertion block 304 for easy maintenance and replacement.

[0023] Working principle: First, push the baffle 201 so that its center position is exposed. Then, place the sample to be tested above the base 1, at the center of the baffle 201. Release the baffle 201 so that the first spring 203 drives the first movable plate 202 to return to its original position. At this time, the baffle 201 flows towards the center position. During the movement, the baffle 201 will push the sample to be tested so that it is in the center position on the X-axis. As mentioned above, at this time, the second spring 7 drives the second movable plate 6 to move, so that the second movable plate 6, the connecting plate 301 above it, and the clamping plate 302 move toward the sample. In the same way, the Y-axis will also be in the center. When the clamping plate 302 is on both sides of the sample, the switch of the clamping airbag 303 is turned on, so that it begins to expand and fix the sample. Flexible fixation work is carried out according to the sample of different sizes.

[0024] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments, which is intended to enable those skilled in the art to understand and apply the present invention. However, it should not be assumed that the specific implementation of the present invention is limited to these descriptions.

Claims

1. A high-toughness concrete tensile test fixture, comprising a base (1), characterized in that, Alignment mechanisms (2) are provided on both sides of the center of the base (1). A movable groove (5) is provided in the center of the base (1). A second movable plate (6) is connected inside the movable groove (5). A clamping mechanism (3) is provided above the second movable plate (6). A second spring (7) is also connected to the other side of the second movable plate (6).

2. The high-toughness concrete tensile test fixture according to claim 1, characterized in that, The alignment mechanism (2) includes a baffle (201), a first movable plate (202), a first spring (203) and a side plate (204). The side plates (204) are symmetrically distributed on both sides of the center of the base (1). The two sides of the base (1) are also connected to mounting plates (4).

3. The high-toughness concrete tensile test fixture according to claim 2, characterized in that, The baffle (201) and the first movable plate (202) are installed as an integral unit. The first movable plate (202) and the side plate (204) are connected by a sliding connection. The first movable plate (202) and the side plate (204) form a spring reset structure through the first spring (203).

4. The high-toughness concrete tensile test fixture according to claim 1, characterized in that, The clamping mechanism (3) includes a connecting plate (301), a clamping plate (302), a clamping airbag (303), and an insertion block (304). The connecting plate (301) is symmetrically distributed on both sides of the center of the base (1).

5. A high-toughness concrete tensile test fixture according to claim 4, characterized in that, The connecting plate (301) has clamping plates (302) symmetrically distributed on both sides, and clamping airbags (303) are symmetrically distributed on both sides of the clamping plates (302), and the clamping airbags (303) on both sides are controlled by different drives.

6. A high-toughness concrete tensile test fixture according to claim 5, characterized in that, The connecting plate (301) and the insertion block (304) engage with each other. The insertion block (304) is a magnetic magnet. The insertion block (304) and the second movable plate (6) are installed as an integrated unit.

7. A high-toughness concrete tensile test fixture according to claim 1, characterized in that, The center of the movable groove (5) coincides with the center of the base (1). The movable groove (5) is connected to the second movable plate (6) by a sliding connection. Limiting blocks (8) are symmetrically distributed on both sides of the second movable plate (6).

8. A high-toughness concrete tensile test fixture according to claim 1, characterized in that, The second movable plate (6) has symmetrically distributed second springs (7) on its outer side. The second movable plate (6) and the base (1) form a spring reset structure through the second springs (7).

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