Rapid concrete splitting tensile test device

Abstract

The embodiment of the utility model discloses a concrete splitting tensile rapid test device, and particularly relates to the technical field of concrete detection, the concrete splitting tensile rapid test device comprises a concrete test piece, a limiting clamping plate is arranged on one side of the outer end face of the concrete test piece, a connecting convex block is arranged on one side of the outer end face of the limiting clamping plate, and a concave mounting groove is formed in the end face of the upper side of the limiting clamping plate; and mounting bumps are arranged on the upper sides of the outer end surfaces of the limiting clamping plates. In actual use, the rotary supporting block, the supporting shell and the coil spring are correspondingly arranged, the coil spring can drive the annular hook to rotate, so that the annular hook is conveniently clamped in the concave connecting groove, and meanwhile, the L-shaped mounting piece, the concave connecting groove and the annular hook are arranged, so that the mounting stability of the test steel bar is improved, and the test accuracy is improved. Meanwhile, after the test steel bar is mounted, the test steel bar can be effectively prevented from displacing and loosening when the concrete test piece moves.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, specifically to a rapid testing device for concrete splitting tensile strength. Background Technology

[0002] The splitting tensile strength test value of concrete is an important parameter in routine concrete testing. During the test, a 5mm steel bar is fixed to both ends of the concrete specimen. The test requires first drawing the center line of the specimen, placing the steel bar on the center line, and then placing it in the upper and lower clamps of the press. During the test, the steel bar needs to be manually fixed. When the upper clamping plate of the press is close to the steel bar, due to gravity and the unevenness of the ball joint of the upper clamping plate, the steel bar may shift, requiring repeated adjustments to center it. The test process is slow and prone to the steel bar being out of sync or eccentric, increasing the test cross-sectional area and causing inaccurate test data. The original test method was quite laborious. First, the center line had to be drawn on the concrete specimen; then, two people were needed for the test—one to observe and center the steel bar, and the other to perform the test and record the data—making it busy, laborious, and very inconvenient.

[0003] Secondly, for example, a rock splitting tensile testing device disclosed in patent CN208366723U involves first placing a pre-processed disc-shaped rock specimen into the lower component of the clamp, ensuring that the arc surface of the specimen contacts the lower pad, and that the axial direction of the specimen is consistent with the direction of the lower pad. Then, the specimen is held in place to maintain its original position, while the upper component of the clamp is fixed to the lower component via a connecting rod. The position of the specimen is adjusted so that the arc surface of the specimen contacts the upper pad, thus stably holding it between the upper and lower clamping components of the clamp. This completes the specimen installation.

[0004] When the above-mentioned device is used, it has the advantages of existing clamps, such as ease of experimental operation and stable experimental process. At the same time, by adding a pair of pads inside the clamp, the clamp also has the advantages of small contact area between the clamp and the specimen and accurate experimental results in the pad method. It avoids the disadvantages of the pad method, such as complicated operation and incomplete symmetrical pad pasting. However, when testing concrete, the test steel bars at both ends of the concrete block are prone to displacement and loosening when the upper and lower clamping components are testing the concrete block, which affects the stability of the concrete block test. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a rapid test device for splitting tensile strength of concrete. The technical problem to be solved by this utility model is: how to facilitate the installation of test steel bars, and at the same time increase the convenience and stability of the test steel bar installation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rapid tensile strength test device for concrete splitting cracks, comprising a concrete specimen, a limiting clamp plate provided on one side of its outer end face, a connecting protrusion provided on one side of the outer end face of the limiting clamp plate, a concave mounting groove provided on the upper end face of the limiting clamp plate, an mounting protrusion provided on the upper side of the outer end face of the limiting clamp plate, a rotating support block provided on the outer end face of the mounting protrusion, and a supporting shell provided in the middle of the outer end face of the rotating support block;

[0007] The rotating support block has a ring hook in the middle, and a coil spring is provided on the outer side of the ring hook on the inner end face of the support shell. A test steel bar is provided on the inner end face of the concave mounting groove. One end of the test steel bar is provided with an L-shaped mounting piece, and a concave connecting groove is opened on the upper side of the outer end of the L-shaped mounting piece.

[0008] In a preferred embodiment, an observation window is provided in the middle of the outer end face of the limiting clamp, and a connecting rubber band is provided on the outer end face of the connecting protrusion;

[0009] The annular hook is set through the middle end face of the rotating support block and the support shell.

[0010] In a preferred embodiment, the limiting clamps are provided in two forms, and are arranged in a mirror image on both sides of the vertical central axis in the top view of the concrete specimen.

[0011] The limiting clamp is C-shaped in cross-section in the main viewing direction, and there are multiple connecting rubber bands, which are mirror images of each other on both sides of the transverse central axis in the main viewing direction of the limiting clamp.

[0012] In a preferred embodiment, the number of connecting protrusions is provided in two groups, with two protrusions in each group, and the two groups of connecting protrusions are arranged in a mirror image on both sides of the vertical central axis in the right-view direction of the limiting clamp.

[0013] The two connecting protrusions are mirror images of each other on both sides of the transverse central axis in the right-view direction of the limiting clamp, and the number of the concave mounting grooves is two, which are also mirror images of each other on both sides of the transverse central axis in the main-view direction of the limiting clamp.

[0014] In a preferred embodiment, the number of the mounting protrusion, the rotating support block and the annular hook are all two, and they are arranged in a mirror image on both sides of the transverse central axis in the main viewing direction of the limiting clamp.

[0015] The inner end face of the concave mounting groove is adapted to the outer end face of the test steel bar. There are two coil springs and support shells, which are set in a mirror state on both sides of the vertical central axis in the right-view direction of the rotating support block.

[0016] In a preferred embodiment, the inner end face of the coil spring is connected to the outer end face of the annular hook, and the outer end face of the coil spring is connected to the inner end face of the supporting housing.

[0017] The L-shaped mounting piece and the concave connecting groove are each provided in pairs, and are set in a mirror image on both sides of the transverse central axis in the main viewing direction of the limiting clamp. The length of the test steel bar in the main viewing direction is greater than the length of the concrete specimen in the main viewing direction.

[0018] The present invention has the following advantages:

[0019] 1. This utility model uses two limiting clamps to fix two test steel bars on the center line of the concrete specimen, ensuring the accuracy of the test data and making the entire test operation more convenient.

[0020] 2. With the rotating support block, support shell, and coil spring in their corresponding configuration, the coil spring can drive the ring hook to rotate, thus facilitating the locking of the ring hook inside the concave connecting groove. Simultaneously, the L-shaped mounting part, concave connecting groove, and ring hook increase the stability of the test steel bar installation. Furthermore, after the test steel bar is installed, it effectively prevents displacement and loosening of the test steel bar when the concrete specimen is moved, thus avoiding the need for workers to reposition and reinstall the test steel bar. This effectively increases the stability and convenience of the test steel bar installation. Attached Figure Description

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 This is a schematic diagram of the overall bottom structure of this utility model.

[0023] Figure 3 For this utility model Figure 1 Enlarged structural diagram of section A in the middle.

[0024] Figure 4 This is a schematic diagram of the coil spring connection structure of this utility model.

[0025] In the figure: 1 Concrete specimen, 2 Limiting clamp, 3 Connecting protrusion, 4 Connecting rubber band, 5 Test steel bar, 6 Concave mounting groove, 7 L-shaped mounting part, 8 Mounting protrusion, 9 Rotary support block, 10 Support shell, 11 Concave connecting groove, 12 Ring hook, 13 Coil spring. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] This invention provides a rapid testing device for the splitting tensile strength of concrete, such as... Figure 1 and 2 As shown, a concrete specimen 1 is provided with a limiting clamp 2 on one side of its outer end face. A connecting protrusion 3 is provided on one side of the outer end face of the limiting clamp 2. An observation window 14 is provided in the middle of the outer end face of the limiting clamp 2. A connecting rubber band 4 is provided on the outer end face of the connecting protrusion 3. The two limiting clamps 2 can be easily connected by the connecting rubber band 4, so that the limiting clamps 2 can be tightly attached to the outer end face of the concrete specimen 1.

[0028] The limiting clamp 2 is provided in two quantities and is set in a mirror state on both sides of the vertical central axis in the top view direction of the concrete specimen 1. The limiting clamp 2 is set in a C-shaped state in the main view direction. The connecting rubber band 4 is provided in multiple quantities and is set in a mirror state on both sides of the transverse central axis in the main view direction of the limiting clamp 2.

[0029] The number of connecting protrusions 3 is provided in two sets, with two in each set. The two sets of connecting protrusions 3 are set in a mirror image on both sides of the vertical central axis in the right view direction of the limiting clamp plate 2. The two connecting protrusions 3 are set in a mirror image on both sides of the horizontal central axis in the right view direction of the limiting clamp plate 2. The length of the test steel bar 5 in the main view direction is greater than the length of the concrete specimen 1 in the main view direction.

[0030] like Figure 3 and 4 As shown, the upper end face of the limiting clamp 2 is provided with a concave mounting groove 6, the upper side of the outer end face of the limiting clamp 2 is provided with a mounting protrusion 8, the outer end face of the mounting protrusion 8 is provided with a rotating support block 9, the middle part of the outer end face of the rotating support block 9 is provided with a support shell 10, and the middle part of the rotating support block 9 is provided with a ring hook 12.

[0031] The inner end face of the supporting shell 10 is provided with a coil spring 13 on the outside of the annular hook 12. The coil spring 13 can drive the annular hook 12 to rotate to one side, so as to facilitate the annular hook 12 to be attached to the outer end face of the L-shaped mounting part 7. The inner end face of the concave mounting groove 6 is provided with a test steel bar 5. One end of the test steel bar 5 is provided with an L-shaped mounting part 7. The upper side of the outer end of the L-shaped mounting part 7 is provided with a concave connecting groove 11. The middle part of the outer end face of the limiting clamp 2 is provided with an observation window 14.

[0032] The annular hook 12 is provided in a through state on the middle end face of the rotating support block 9 and the support shell 10. There are two concave mounting grooves 6, which are mirrored on both sides of the transverse central axis in the main view direction of the limiting clamp plate 2. There are two mounting protrusions 8, two rotating support blocks 9 and two annular hooks 12, which are mirrored on both sides of the transverse central axis in the main view direction of the limiting clamp plate 2.

[0033] The inner end face of the concave mounting groove 6 is adapted to the outer end face of the test steel bar 5. There are two coil springs 13 and two support shells 10, which are set in a mirror state on both sides of the vertical central axis in the right view direction of the rotating support block 9, which can effectively increase the stability of the fit between the ring hook 12 and the outer end face of the L-shaped mounting part 7.

[0034] The inner end face of the coil spring 13 is connected to the outer end face of the annular hook 12, and the outer end face of the coil spring 13 is connected to the inner end face of the supporting shell 10. The number of L-shaped mounting parts 7 and concave connecting grooves 11 are both provided in two, and they are set in a mirror state on both sides of the transverse central axis in the main viewing direction of the limiting clamp 2.

[0035] Working principle of this utility model:

[0036] When using this utility model, the worker attaches the limiting clamp 2 to the outer end face of the concrete specimen 1. After it is fixed, the worker can install the connecting rubber band 4 on the outer end face of the connecting protrusion 3 to connect the two limiting clamps 2 together. Then, the test steel bar 5 can be installed inside the concave mounting groove 6. The worker can then move the ring hook 12 to open it. After that, the ring hook 12 can be released, and the coil spring 13 will drive the ring hook 12 to rotate, so that the ring hook 12 can be easily locked inside the concave connecting groove 11. Then, the worker can install the concrete specimen 1 inside the test device, so as to facilitate the testing of the concrete specimen 1.

[0037] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A rapid testing device for splitting tensile strength of concrete, characterized in that, include: A concrete specimen (1) has a limiting clamp (2) on one side of its outer end face. A connecting protrusion (3) is provided on one side of the outer end face of the limiting clamp (2). A concave mounting groove (6) is opened on the upper end face of the limiting clamp (2). An mounting protrusion (8) is provided on the upper side of the outer end face of the limiting clamp (2). A rotating support block (9) is provided on the outer end face of the mounting protrusion (8). A supporting shell (10) is provided in the middle of the outer end face of the rotating support block (9). The rotating support block (9) is provided with an annular hook (12) in the middle. The inner end face of the support shell (10) is provided with a coil spring (13) on the outside of the annular hook (12). The inner end face of the concave mounting groove (6) is provided with a test steel bar (5). One end of the test steel bar (5) is provided with an L-shaped mounting part (7). The upper side of the outer end of the L-shaped mounting part (7) is provided with a concave connecting groove (11).

2. The rapid tensile strength testing device for concrete splitting cracks according to claim 1, characterized in that: An observation window (14) is provided in the middle of the outer end face of the limiting clamp (2), and a connecting rubber band (4) is provided on the outer end face of the connecting protrusion (3). The annular hook (12) is set in a through state at the middle end face of the rotating support block (9) and the support shell (10).

3. The rapid tensile strength testing device for concrete splitting cracks according to claim 2, characterized in that: The number of the limiting clamps (2) is two, and they are set in a mirror state on both sides of the vertical central axis in the top view of the concrete specimen (1); The limiting clamp (2) is C-shaped in the main view direction, and the number of connecting rubber bands (4) is multiple, and they are mirror images on both sides of the transverse central axis in the main view direction of the limiting clamp (2).

4. The rapid tensile strength testing device for concrete splitting crack as described in claim 1, characterized in that: The number of connecting protrusions (3) is set in two groups, with two in each group. The two groups of connecting protrusions (3) are set in a mirror image on both sides of the vertical central axis in the right-view direction of the limiting clamp (2). The two connecting protrusions (3) are set in a mirror state on both sides of the transverse central axis in the right view direction of the limiting clamp (2), and the number of the concave mounting grooves (6) is two, and they are set in a mirror state on both sides of the transverse central axis in the main view direction of the limiting clamp (2).

5. The rapid tensile strength testing device for concrete splitting cracks according to claim 1, characterized in that: The number of the mounting protrusion (8), the rotating support block (9) and the ring hook (12) are all two, and they are set in a mirror state on both sides of the transverse central axis in the main viewing direction of the limiting clamp (2); The inner end face of the concave mounting groove (6) is adapted to the outer end face of the test steel bar (5). There are two coil springs (13) and two support shells (10), which are set in a mirror state on both sides of the vertical central axis in the right view direction of the rotating support block (9).

6. The rapid tensile strength testing device for concrete splitting cracks according to claim 1, characterized in that: The inner end face of the coil spring (13) is connected to the outer end face of the annular hook (12), and the outer end face of the coil spring (13) is connected to the inner end face of the supporting shell (10). The number of L-shaped mounting parts (7) and concave connecting grooves (11) are both two, and they are set in a mirror state on both sides of the transverse central axis of the limiting clamp (2) in the main view direction. The length of the test steel bar (5) in the main view direction is greater than the length of the concrete specimen (1) in the main view direction.

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