Concrete crack resistance experimental device

Abstract

The utility model discloses a concrete crack resistance experiment device which comprises a first supporting piece, a rotatable pressing block is installed at the lower end of the first supporting piece, the pressing block is a rectangular structural piece, contact blocks in different shapes are arranged on the four faces of the pressing block, and the pressing block can be turned over through a driving assembly. A third gear connected with the pressing block is rotated, a second gear meshed with the pressing block is rotated, then a first gear meshed with the pressing block is rotated, the pressing block is driven to rotate, contact blocks in different shapes are arranged on the four faces of the pressing block, and the contact blocks can be switched freely to test crack formation and expansion on the surface of concrete in the indentation test of the pressing blocks in different shapes. Therefore, the crack resistance is reflected, and the efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-cracking experiments, in particular to a concrete anti-cracking experiment device. Background Art

[0002] Indentation testing is a method of evaluating the performance of concrete by applying pressure to the concrete surface and observing its reaction. In indentation testing, the crack formation and propagation on the concrete surface can reflect its anti-cracking performance. Due to the different contact methods and force distributions between different-shaped indenters and the concrete surface, they may have different effects on the crack formation and propagation on the concrete surface.

[0003] However, in the existing concrete anti-cracking experiment devices, generally, the same-shaped indenter is used. If tests are to be carried out with different-shaped indenters, generally, the original indenter needs to be removed and then replaced with an indenter of a different shape for testing, and the efficiency is relatively low. For this reason, we propose a concrete anti-cracking experiment device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a concrete anti-cracking experiment device to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A concrete anti-cracking experiment device, including a first support member, a rotatable indenter is installed at the lower end of the first support member. The indenter is a rectangular structural member, and contact blocks of different shapes are arranged on its four faces. The indenter can be flipped through a driving component. The driving component includes a first gear, a second gear, a third gear, a rotating rod, and a motor. One end of the shaft rod of the indenter is installed with the first gear. The first gear meshes with the second gear. The second gear is rotatably installed on one side of the first support member. The second gear meshes with the third gear. The third gear is connected to one end of the rotating rod. The rotating rod is rotatably connected to the first support member, and the other end thereof is connected to the output end of the motor.

[0006] Preferably, the first support member can slide up and down through a lifting component. The lifting component includes an electric push rod, a second support member, and a sliding rod. The first support member is connected to the output end of the electric push rod. The electric push rod is installed at the top end of the second support member. Two groups of sliding rods are symmetrically installed at the top end of the first support member. The two groups of sliding rods penetrate the second support member and are slidably connected thereto.

[0007] Preferably, a pressure detector is installed in the inner cavity at the bottom end of the second support member corresponding to the indenter. The pressure detector can be used to place a concrete module.

[0008] Preferably, a protective cover for protection is arranged in the inner cavity at the bottom end of the second support member.

[0009] Preferably, a control panel is arranged on one side of the second support member, and four anti-slip pads are installed at the bottom end of the second support member.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. By starting the motor, the present utility model drives the rotating rod to rotate, causing the third gear connected thereto to rotate, the second gear meshing therewith to rotate, and then the first gear meshing therewith to rotate, driving the pressing block to rotate. Different-shaped contact blocks are arranged on the four surfaces of the pressing block, which can be switched at will to test the crack formation and expansion on the concrete surface during the indentation test with pressing blocks of different shapes, so as to reflect its crack resistance performance, with higher efficiency.

[0012] 2. By the extension of the electric push rod, the present utility model can push the first support member to lower, and at the same time drive the sliding rod to slide along the second support member, improving the stability of the lifting of the first support member. The concrete module is pressed by the pressing block, and the pressure detector can detect the pressure it bears and test its crack resistance value. The pressure detector is connected to the control panel, which can display the pressure value and can also control the device through the control panel. The protective cover can play a protective role to prevent the splashing of broken concrete fragments from hurting people, and the anti-slip pads can increase the anti-slip effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a cross-sectional view of the overall structure of the present utility model;

[0014] Figure 2 is a front view of the overall structure of the present utility model;

[0015] Figure 3 is an exploded view of the overall structure of the present utility model;

[0016] Figure 4 is a side view of the overall structure of the present utility model.

[0017] In the figure: 1. First support member, 2. Pressing block, 3. First gear, 4. Second gear, 5. Third gear, 6. Rotating rod, 7. Motor, 8. Electric push rod, 9. Second support member, 10. Sliding rod, 11. Pressure detector, 12. Concrete module, 13. Protective cover, 14. Control panel, 15. Anti-slip pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Embodiment 1

[0020] Please refer to Figures 1-4 As shown, the present utility model provides a concrete anti-cracking experiment device, which includes a first support member 1. A rotatable pressing block 2 is installed at the lower end of the first support member 1. The pressing block 2 is a rectangular structural member, and contact blocks with different shapes are arranged on its four surfaces. The pressing block 2 can be flipped through a driving assembly. The driving assembly includes a first gear 3, a second gear 4, a third gear 5, a rotating rod 6, and a motor 7. One end of the shaft rod of the pressing block 2 is installed with the first gear 3. The first gear 3 meshes with the second gear 4. The second gear 4 is rotatably installed on one side of the first support member 1. The second gear 4 meshes with the third gear 5. The third gear 5 is connected to one end of the rotating rod 6. The rotating rod 6 is rotatably connected to the first support member 1, and the other end thereof is connected to the output end of the motor 7.

[0021] In this embodiment, by starting the motor 7, the rotating rod 6 is driven to rotate, so that the third gear 5 connected thereto rotates, the second gear 4 meshing with it rotates, and then the first gear 3 meshing with it rotates, driving the pressing block 2 to rotate. Contact blocks with different shapes are arranged on the four surfaces of the pressing block 2, which can be switched at will to test the crack formation and expansion on the concrete surface during the indentation test of the pressing block 2 with different shapes, so as to reflect its anti-cracking performance, with higher efficiency.

[0022] Please refer to Figures 1-4 As shown, the first support member 1 can slide up and down through a lifting assembly. The lifting assembly includes an electric push rod 8, a second support member 9, and a sliding rod 10. The first support member 1 is connected to the output end of the electric push rod 8. The electric push rod 8 is installed at the top of the second support member 9. Two groups of sliding rods 10 are symmetrically installed at the top of the first support member 1. The two groups of sliding rods 10 penetrate the second support member 9 and are slidably connected to it. A pressure detector 11 is installed in the inner cavity at the bottom end of the second support member 9 corresponding to the pressing block 2. The pressure detector 11 can be used to place the concrete module 12. A protective cover 13 for protection is arranged in the inner cavity at the bottom end of the second support member 9. A control panel 14 is arranged on one side of the second support member 9. Four groups of anti-slip pads 15 are installed at the bottom end of the second support member 9.

[0023] In this embodiment, by extending the electric push rod 8, the first support member 1 can be pushed down. At the same time, the sliding rod 10 is driven to slide along the second support member 9, improving the stability of the lifting and lowering of the first support member 1. The concrete block 12 is pressed down by the pressing block 2, and the pressure detector 11 can detect the pressure it bears to test its crack resistance value. The pressure detector 11 is connected to the control panel 14, which can display the pressure value and can also control the device through the control panel 14. The protective cover 13 can play a protective role to prevent the splashing of broken concrete fragments from hurting people, and the anti-slip pad 15 can increase the anti-slip effect of the device.

[0024] Working principle: First, by starting the motor 7, the rotating rod 6 is driven to rotate, causing the third gear 5 connected to it to rotate, then the second gear 4 meshing with it to rotate, and then the first gear 3 meshing with it to rotate, driving the pressing block 2 to rotate. The four faces of the pressing block 2 are provided with contact blocks of different shapes, which can be switched at will to test the formation and expansion of cracks on the concrete surface in the indentation test with pressing blocks 2 of different shapes, so as to reflect its crack resistance performance, with higher efficiency. By extending the electric push rod 8, the first support member 1 can be pushed down. At the same time, the sliding rod 10 is driven to slide along the second support member 9, improving the stability of the lifting and lowering of the first support member 1. The concrete block 12 is pressed down by the pressing block 2, and the pressure detector 11 can detect the pressure it bears to test its crack resistance value. The protective cover 13 can play a protective role to prevent the splashing of broken concrete fragments from hurting people, and the anti-slip pad 15 can increase the anti-slip effect of the device.

[0025] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A concrete anti-cracking experimental device, comprising a first support member (1), characterized in that: A rotatable pressing block (2) is installed at the lower end of the first support member (1). The pressing block (2) is a rectangular structural member, and contact blocks with different shapes are provided on its four faces. The pressing block (2) can be flipped by a driving assembly. The driving assembly includes a first gear (3), a second gear (4), a third gear (5), a rotating rod (6), and a motor (7). One end of the shaft of the pressing block (2) is installed with the first gear (3). The first gear (3) meshes with the second gear (4). The second gear (4) is rotatably installed on one side of the first support member (1). The second gear (4) meshes with the third gear (5). The third gear (5) is connected to one end of the rotating rod (6). The rotating rod (6) is rotatably connected to the first support member (1), and the other end thereof is connected to the output end of the motor (7).

2. The concrete anti-cracking experiment device according to claim 1, characterized in that: The first support member (1) can be slid up and down through a lifting assembly. The lifting assembly includes an electric push rod (8), a second support member (9), and a sliding rod (10). The first support member (1) is connected to the output end of the electric push rod (8). The electric push rod (8) is installed at the top end of the second support member (9). Two groups of sliding rods (10) are symmetrically installed at the top end of the first support member (1). The two groups of sliding rods (10) penetrate the second support member (9) and are slidably connected thereto.

3. The concrete anti-cracking experimental device according to claim 2, characterized in that: A pressure detector (11) corresponding to the pressing block (2) is installed in the inner cavity at the bottom end of the second support member (9). The pressure detector (11) can be used to place a concrete block (12).

4. The concrete anti-cracking experiment device according to claim 3, characterized in that: A protective cover (13) for protection is provided in the inner cavity at the bottom end of the second support member (9).

5. The concrete anti-cracking experimental device according to claim 4, characterized in that: A control panel (14) is provided on one side of the second support member (9). Four groups of anti-slip pads (15) are installed at the bottom end of the second support member (9).

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