Resiliometer for detecting compressive strength of concrete structure

Abstract

The utility model discloses a rebound apparatus for detecting compressive strength of a concrete structure, which comprises a rebound apparatus main body, a bottom plate and a striking rod, a handle is fixed on one side of the bottom plate, one side of a threaded column is connected with a connecting block, and one side of the connecting block is connected with a support plate. The handle is fixedly installed on the side edge of the bottom plate, the anti-skid sleeve is connected to the outer portion of the handle, and the anti-skid lines are evenly distributed on the outer portion of the anti-skid sleeve, so that the anti-skid effect in the handheld process is improved in the working process, meanwhile, the pin shaft is used for completing rotatable connection with the sleeve shaft, and the anti-skid effect is improved. Therefore, when the handle is used for holding, the supporting legs can be used for supporting the ground, the supporting plate with the appropriate surface area size is selected according to needs, the threaded columns and the threaded grooves are matched to complete threaded connection, and therefore the supporting plate can be conveniently connected and installed, and the supporting plate is used for directly making contact with the ground; in this way, the diversity of placement is improved in the working process.

Description

Technical Field

[0001] The utility model relates to the technical field of rebound testers, in particular to a rebound tester for detecting the compressive strength of a concrete structure. Background Art

[0002] Concrete structure is a common type of structure. Before it is put into actual use, its strength needs to be tested. When testing the compressive strength of concrete structure, a rebound tester is needed. The rebound tester is a device used to measure the surface hardness of materials. Generally speaking, it is used in the compression test of concrete structure. It has the characteristics of portability, speed, low cost and simple operation. Therefore, its scope of use is also relatively wide.

[0003] The rebound test hammer uses a spring to drive a heavy hammer to hit the impact rod in vertical contact with the concrete surface, thereby causing local concrete deformation and absorbing part of the energy, while the other part of the energy is converted into the rebound kinetic energy of the heavy hammer. When the heavy hammer rebounds to the maximum distance, the instrument will display this distance as the rebound value. When the rebound value is obtained, the compressive strength of the concrete structure is also obtained. When the rebound test hammer is in use, if it can only be held by hand, it will easily affect the convenience of temporary placement and affect the operating effect. Utility Model Content

[0004] The utility model aims to provide a rebound tester for testing the compressive strength of concrete structures, so as to solve the problem in the above-mentioned background technology that if the rebound tester can only be held and placed by hand when in use, it is easy to affect the convenience of temporary placement and the operating effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rebound tester for testing the compressive strength of concrete structures, comprising a rebound tester body, a base plate, and a striking rod, a handle is fixed to one side of the base plate, an anti-slip sleeve is connected to the outside of the handle, anti-slip patterns are fixed to the outer wall of the anti-slip sleeve, mounting plates are installed at the top and bottom ends of the base plate, a pin is connected between the mounting plates, a sleeve shaft is sleeved on the outside of the pin, a support leg is fixed to one side of the sleeve shaft, a threaded groove is opened inside one side of the support leg, a threaded column is connected to the inside of the threaded groove, one side of the threaded column is connected to a connecting block, and one side of the connecting block is connected to the support plate.

[0006] Preferably, the anti-skid patterns are evenly distributed on the outside of the anti-skid sleeve, and anti-skid particles are evenly distributed on the outside of the anti-skid patterns.

[0007] Preferably, the two mounting plates form a group, and two groups of mounting plates are distributed at the top and bottom ends of the base plate.

[0008] Preferably, a threaded connection is formed between the thread groove and the threaded column, and a rotatable connection is formed between the pin shaft and the sleeve shaft.

[0009] Preferably, a second guide rail is fixed to the top and bottom ends of one side of the base plate, a connecting plate is connected to the outside of one side of the second guide rail, one side of the impact rod is connected to a force-bearing plate, a connecting rod is fixed between the force-bearing plate and the connecting plate, a wear-resistant layer is fixed to the outer wall of one side of the force-bearing plate, and a positioning block is installed on the other side of the force-bearing plate.

[0010] Preferably, the connecting rod is symmetrically distributed about the central axis of the force-bearing plate, the second guide rail is symmetrically distributed about the horizontal central axis of the base plate, a reserved hole is opened inside the connecting plate, an embedding groove is opened inside the reserved hole, a ball is embedded in the embedding groove, and the embedding groove is distributed in a ring shape about the center of the reserved hole.

[0011] Preferably, a display screen is installed on the front end surface of the rebound instrument body, and first plates are installed on both sides of the front end of the rebound instrument body, one side of the first plate is connected to a reset spring, one side of the reset spring is connected to a cleaning plate, and a first guide rail is opened inside the cleaning plate near the top and bottom ends.

[0012] Preferably, the first guide rails are symmetrically distributed about the central axis of the first plate, and cleaning cotton is fixed to the back end of the cleaning plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the rebound hammer for testing the compressive strength of concrete structures not only improves the convenience of placement, but also improves the activity protection capability and screen cleaning capability of the rebound hammer;

[0014] (1) The handle is fixed on the side of the base plate, and the outside of the handle is connected to an anti-slip sleeve, and the anti-slip patterns are evenly distributed on the outside of the anti-slip sleeve, thereby improving the anti-slip effect during the hand-holding process. At the same time, the pin shaft is used to complete the rotatable connection between the sleeve shaft. Therefore, while the handle is used for holding, the support legs can also be used for supporting the ground. A support plate with a suitable surface area can be selected according to needs, and the threaded column and the threaded groove can be matched to complete the threaded connection, thereby facilitating the connection and installation of the support plate. The support plate is used to directly contact the ground, thereby improving the diversity of placement during the work process;

[0015] (2) The connection between the connecting plate and the force-bearing plate is completed by using the connecting rod. When the impact rod is extended and rebounded, the force-bearing plate moves and the connecting plate moves laterally along the second guide rail. A reserved hole is provided in the connecting plate. Therefore, under the cooperation of the embedded groove and the ball, the second guide rail can move in the reserved hole while the contact wear problem is reduced by the rolling of the ball, thereby reducing a certain rebound loss phenomenon.

[0016] (3) By installing the first plate at the front end of the rebound tester body, when the surface of the display screen needs to be cleaned, the cleaning plate is pulled to move along the first guide rail. At this time, the reset spring is stretched and the surface of the display screen is cleaned with cleaning cotton. After the cleaning is completed, the reset spring can be reset and rebounded to return the cleaning plate to the sidemost position, thereby improving the cleaning ability of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the bottom plate structure from a top view of the present utility model;

[0019] Figure 3 It is a schematic diagram of a partial side cross-sectional structure of a connecting plate of the utility model;

[0020] Figure 4 It is a schematic diagram of the side structure of the cleaning plate of the utility model.

[0021] In the figure: 1. Rebound tester body; 2. First plate; 3. Reset spring; 4. Display screen; 5. First guide rail; 6. Bottom plate; 7. Handle; 8. Support leg; 9. Anti-skid sleeve; 10. Anti-skid pattern; 11. Second guide rail; 12. Connecting plate; 13. Impact rod; 14. Connecting rod; 15. Positioning block; 16. Wear-resistant layer; 17. Force plate; 18. Threaded groove; 19. Threaded column; 20. Support plate; 21. Connecting block; 22. Sleeve shaft; 23. Mounting plate; 24. Pin shaft; 25. Reserved hole; 26. Groove; 27. Ball; 28. Cleaning plate; 29. ​​Cleaning cotton. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model provides an embodiment: a rebound tester for testing the compressive strength of concrete structures, comprising a rebound tester body 1, a base plate 6, and a striking rod 13, characterized in that a handle 7 is fixed to one side of the base plate 6, an anti-slip sleeve 9 is connected to the outside of the handle 7, and an anti-slip pattern 10 is fixed to the outer wall of the anti-slip sleeve 9, a mounting plate 23 is installed at the top and bottom of the base plate 6, a pin shaft 24 is connected between the mounting plates 23, a sleeve shaft 22 is sleeved on the outside of the pin shaft 24, a support leg 8 is fixed to one side of the sleeve shaft 22, a threaded groove 18 is opened inside one side of the support leg 8, a threaded column 19 is connected to the inside of the threaded groove 18, a connecting block 21 is connected to one side of the threaded column 19, and a supporting plate 20 is connected to one side of the connecting block 21.

[0024] The anti-skid patterns 10 are evenly distributed on the outside of the anti-skid cover 9 , and anti-skid particles are evenly distributed on the outside of the anti-skid patterns 10 .

[0025] Two mounting plates 23 form a group, and two groups of mounting plates 23 are distributed at the top and bottom ends of the base plate 6 .

[0026] A threaded connection is formed between the thread groove 18 and the threaded column 19 , and a rotatable connection is formed between the pin shaft 24 and the sleeve shaft 22 .

[0027] A second guide rail 11 is fixed to the top and bottom ends of one side of the base plate 6, a connecting plate 12 is connected to the outside of one side of the second guide rail 11, a force-bearing plate 17 is connected to one side of the impact rod 13, a connecting rod 14 is fixed between the force-bearing plate 17 and the connecting plate 12, a wear-resistant layer 16 is fixed to the outer wall of one side of the force-bearing plate 17, and a positioning block 15 is installed on the other side of the force-bearing plate 17.

[0028] The connecting rod 14 is symmetrically distributed about the central axis of the force-bearing plate 17, and the second guide rail 11 is symmetrically distributed about the horizontal central axis of the bottom plate 6. A reserved hole 25 is opened inside the connecting plate 12, and an embedding groove 26 is opened inside the reserved hole 25. A ball 27 is embedded in the embedding groove 26, and the embedding groove 26 is distributed in a ring shape about the center of the reserved hole 25.

[0029] A display screen 4 is installed on the front end surface of the rebound instrument body 1, and first plates 2 are installed on both sides of the front end of the rebound instrument body 1. A reset spring 3 is connected to one side of the first plate 2, and a cleaning plate 28 is connected to one side of the reset spring 3. A first guide rail 5 is opened near the top and bottom ends of the cleaning plate 28.

[0030] The first guide rail 5 is symmetrically distributed about the central axis of the first plate 2, and a cleaning cotton 29 is fixed to the back end of the cleaning plate 28;

[0031] Furthermore, the extended length of the first plate 2 and the cleaning plate 28 is smaller than the distance between the second guide rail 11 and the rebound tester body 1 , so when the connecting plate 12 moves, it will not touch and affect the movement of the cleaning plate 28 .

[0032] Working principle: First, select the position of the handle 7 to grab and hold according to the needs, then let the surface of the force plate 17 directly contact the surface of the concrete structure, use the spring in the rebound tester body 1 to drive the heavy hammer to hit the impact rod 13 that is in vertical contact with the concrete surface, so that the local concrete is deformed and absorbs part of the energy, and the other part of the energy is converted into the rebound kinetic energy of the heavy hammer. When the heavy hammer rebounds to the maximum distance, the rebound value distance is displayed on the position of the display screen 4, specifically as a numerical display. When the rebound value is obtained, the compressive strength of the concrete structure is obtained, and the staff can record the numerical data.

[0033] 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.

Claims

1. A rebound hammer for testing the compressive strength of a concrete structure, comprising a rebound hammer body (1), a bottom plate (6), and a striking rod (13), characterized in that: A handle (7) is fixed on one side of the base plate (6), an anti-slip sleeve (9) is connected to the outside of the handle (7), an anti-slip pattern (10) is fixed to the outer wall of the anti-slip sleeve (9), mounting plates (23) are installed at the top and bottom of the base plate (6), a pin shaft (24) is connected between the mounting plates (23), a sleeve shaft (22) is sleeved on the outside of the pin shaft (24), a support leg (8) is fixed on one side of the sleeve shaft (22), a threaded groove (18) is provided inside one side of the support leg (8), a threaded column (19) is connected to the inside of the threaded groove (18), a connecting block (21) is connected to one side of the threaded column (19), and a supporting plate (20) is connected to one side of the connecting block (21).

2. The rebound hammer for testing the compressive strength of concrete structures according to claim 1, characterized in that: The anti-skid pattern (10) is evenly distributed on the outside of the anti-skid sleeve (9), and anti-skid particles are evenly distributed on the outside of the anti-skid pattern (10).

3. The rebound hammer for testing the compressive strength of concrete structure according to claim 1, characterized in that: The two mounting plates (23) form a group, and two groups of mounting plates (23) are distributed at the top and bottom ends of the base plate (6).

4. The rebound hammer for testing the compressive strength of concrete structure according to claim 1, characterized in that: A threaded connection is formed between the thread groove (18) and the thread column (19), and a rotatable connection is formed between the pin shaft (24) and the sleeve shaft (22).

5. The rebound hammer for testing the compressive strength of concrete structure according to claim 1, characterized in that: A second guide rail (11) is fixed to the top and bottom ends of one side of the bottom plate (6); a connecting plate (12) is connected to the outside of one side of the second guide rail (11); a force-bearing plate (17) is connected to one side of the impact rod (13); a connecting rod (14) is fixed between the force-bearing plate (17) and the connecting plate (12); a wear-resistant layer (16) is fixed to the outer wall of one side of the force-bearing plate (17); and a positioning block (15) is installed on the other side of the force-bearing plate (17).

6. The rebound hammer for testing the compressive strength of concrete structure according to claim 5, characterized in that: The connecting rod (14) is symmetrically distributed with respect to the central axis of the force-bearing plate (17); the second guide rail (11) is symmetrically distributed with respect to the horizontal central axis of the bottom plate (6); a reserved hole (25) is provided inside the connecting plate (12); an embedding groove (26) is provided inside the reserved hole (25); a ball (27) is embedded inside the embedding groove (26); and the embedding groove (26) is distributed in a ring shape with respect to the center of the reserved hole (25).

7. The rebound hammer for testing the compressive strength of concrete structure according to claim 1, characterized in that: A display screen (4) is installed on the front end surface of the rebound tester body (1), first plates (2) are installed on both sides of the front end of the rebound tester body (1), one side of the first plate (2) is connected to a reset spring (3), one side of the reset spring (3) is connected to a cleaning plate (28), and a first guide rail (5) is provided inside the cleaning plate (28) near the top and bottom ends.

8. The rebound hammer for testing the compressive strength of concrete structure according to claim 7, characterized in that: The first guide rails (5) are symmetrically distributed about the central axis of the first plate (2), and a cleaning cotton (29) is fixed to the back end of the cleaning plate (28).

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