Auxiliary positioning device of resiliometer
The auxiliary positioning device for rebound hammers adjusts the hammer body to maintain perpendicularity with the concrete surface, addressing tilt issues and enhancing measurement accuracy.
Patent Information
- Application Number
- CN202420761160.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The axis of the rebound hammer's impact rod often tilts during testing, reducing detection accuracy due to the small diameter and difficulty in maintaining perpendicularity with the concrete surface.
An auxiliary positioning device with a horizontal frame, sliding rods, threaded rotating cylinders, and supporting feet that adjust to ensure the rebound hammer body remains perpendicular to the testing surface, using a spirit level for alignment.
Enhances detection accuracy by ensuring the rebound hammer body and impact rod remain perpendicular to the concrete surface, compensating for surface irregularities and improving measurement precision.
Smart Images
Figure CN222232175U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rebound hammers, in particular to an auxiliary positioning device for rebound hammers. Background Art
[0002] As a testing device for testing the compressive strength of concrete, the rebound test hammer is widely used in engineering. Its basic principle is to use a spring to drive a heavy hammer, which hits the impact rod perpendicular to the concrete surface with constant kinetic energy, converting part of the energy into the rebound kinetic energy of the heavy hammer. When the heavy hammer rebounds to the maximum distance, the rebound value is read and converted into the corresponding compressive strength of the tested concrete through calculation.
[0003] When using a rebound hammer for testing, it is necessary to ensure that the axis of the rebound hammer is perpendicular to the testing surface of the concrete. However, due to the small diameter of the impact rod of the rebound hammer, the impact rod and the testing surface of the concrete are easily tilted during operation, thereby reducing the detection accuracy. Therefore, it is necessary to propose an auxiliary positioning device for the rebound hammer to solve the above-mentioned problem. Utility Model Content
[0004] The utility model aims to provide an auxiliary positioning device for a rebound hammer, which has the characteristics of facilitating the auxiliary positioning to keep the rebound hammer body always level with the detection surface during measurement, so as to improve the detection accuracy.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an auxiliary positioning device of a rebound instrument, comprising a rebound instrument body, a horizontal frame is arranged on the outside of the rebound instrument body, the outer wall of the rebound instrument body is fixedly connected with fixing rings respectively located on the upper and lower sides of the horizontal frame, three sliding rods penetrating the horizontal frame and slidably connected thereto are fixedly connected between the two fixing rings, the left and right sides of the lower end of the horizontal frame are fixedly connected with vertical plates, the two vertical plates are fixedly connected with horizontal plates on the opposite sides, threaded rotating cylinders are arranged on the front and rear sides of the upper end surfaces of the two horizontal plates, the inner walls of the four threaded rotating cylinders are threadedly connected with threaded disks, guide holes are penetrated on the front and rear sides of the upper end surfaces of the two horizontal plates, the lower ends of the four threaded disks are fixedly connected with adjusting rods passing through the four guide holes, the lower ends of the four adjusting rods are fixedly connected with supporting feet, and a spirit level is arranged on the left side of the horizontal frame.
[0006] In order to improve the stability of the movement of the four adjustment rods, as a preferred auxiliary positioning device of the rebound tester of the utility model, the four adjustment rods are respectively slidably connected to the inner walls of the four guide holes through two slide rails distributed front and rear.
[0007] In order to improve the rotation stability of the threaded drum, as a preferred auxiliary positioning device of the rebound tester of the utility model, the two threaded drums located on the same side are rotatably connected to the upper end surfaces of the two horizontal plates through bearings.
[0008] In order not to affect the reading of the test result, as a preferred auxiliary positioning device of a rebound tester of the utility model, the front end of the horizontal frame is provided with an opening.
[0009] In order to facilitate the installation of the spirit level, as a preferred auxiliary positioning device of a rebound tester of the present invention, a horizontal fixing plate is fixedly connected to the left side of the horizontal frame, and the spirit level is installed on the upper end surface of the horizontal fixing plate.
[0010] In order to achieve an anti-skid effect when rotating the threaded drum, as a preferred auxiliary positioning device of a rebound tester of the utility model, the outer walls of the four threaded drums are all provided with anti-skid patterns.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] By making all four supporting feet contact with the concrete surface to be tested, when there are other factors affecting the flatness such as protrusions or depressions at the contact points, the heights of the four supporting feet can be adjusted respectively, and the rebound test hammer body can be adjusted vertically to the surface to be tested in conjunction with the observation level. Then, the horizontal frame is pressed down, and the impact test is performed through the rebound test hammer body. During this process, the rebound test hammer body and the impact rod are always perpendicular to the ground, thereby achieving the effect of improving the detection accuracy by making the rebound test hammer body always keep level with the detection surface during detection through auxiliary positioning. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is the overall external structure diagram of the utility model;
[0014] Figure 2 It is an overall front cross-sectional view of the utility model;
[0015] Figure 3 This is an external structural diagram of the fixing ring and the sliding rod of the utility model.
[0016] In the figure: 1. Rebound tester body; 2. Horizontal frame; 3. Fixing ring; 4. Sliding rod; 5. Vertical plate; 6. Horizontal plate; 7. Threaded drum; 8. Threaded disk; 9. Adjusting rod; 10. Support foot; 11. Level; 12. Horizontal fixing plate; 13. Guide hole. DETAILED DESCRIPTION
[0017] See also Figures 1 to 3, an auxiliary positioning device for a rebound tester comprises a rebound tester body 1, a horizontal frame 2 is arranged on the outside of the rebound tester body 1, the outer wall of the rebound tester body 1 is fixedly connected with fixing rings 3 respectively located on the upper and lower sides of the horizontal frame 2, three sliding rods 4 penetrating the horizontal frame 2 and slidably connected thereto are fixedly connected between the two fixing rings 3, the left and right sides of the lower end of the horizontal frame 2 are fixedly connected with vertical plates 5, the opposite sides of the two vertical plates 5 are fixedly connected with horizontal plates 6, the front and rear sides of the upper end surfaces of the two horizontal plates 6 are provided with threaded rotating cylinders 7, the inner walls of the four threaded rotating cylinders 7 are threadedly connected with threaded disks 8, the front and rear sides of the upper end surfaces of the two horizontal plates 6 are penetrated with guide holes 13, the lower ends of the four threaded disks 8 are fixedly connected with adjusting rods 9 passing through the four guide holes 13, the lower ends of the four adjusting rods 9 are fixedly connected with supporting feet 10, and a level 11 is arranged on the left side of the horizontal frame 2.
[0018] In this embodiment: by making the four supporting feet 10 all contact with the concrete surface to be tested, when there are other factors affecting the flatness such as protrusions or depressions at the contact points, the four threaded rotating cylinders 7 can be rotated respectively, so that the four threaded disks 8 can be moved up and down a certain distance, and at the same time, the four adjusting rods 9 and the four supporting feet 10 can be driven to move up and down until the level 11 displays a horizontal state. At this time, it can be ensured that the rebound tester body 1 is perpendicular to the surface to be tested, and then the horizontal frame 2 is pressed. Since the rebound tester body 1 can slide up and down with the three sliding rods 4, the impact rod of the rebound tester body 1 can be locked and pressed down to perform impact detection. In this process, the rebound tester body 1 and the impact rod are always perpendicular to the ground, so as to achieve the effect of keeping the rebound tester body 1 level with the test surface during detection through auxiliary positioning, so as to improve the detection accuracy.
[0019] As a technical optimization solution of the present invention, the four adjustment rods 9 are respectively slidably connected to the inner walls of the four guide holes 13 via two slide rails distributed front and rear.
[0020] In this embodiment, a slide rail is provided to improve the stability of the up and down movement of the adjusting rod 9.
[0021] As a technical optimization solution of the utility model, the two threaded rotating drums 7 located on the same side are rotatably connected to the upper end surfaces of the two horizontal plates 6 through bearings.
[0022] In this embodiment, bearings are provided to improve the rotation stability of the threaded drum 7.
[0023] As a technical optimization solution of the present invention, the front end of the horizontal frame 2 is provided with an opening.
[0024] In this embodiment, the opening is provided to prevent the horizontal frame 2 from blocking the reading after the rebound tester body 1 is detected.
[0025] As a technical optimization solution of the present invention, a horizontal fixing plate 12 is fixedly connected to the left side of the horizontal frame 2 , and the spirit level 11 is installed on the upper end surface of the horizontal fixing plate 12 .
[0026] In this embodiment, a horizontal fixing plate 12 is provided to facilitate installation of the level 11 .
[0027] As a technical optimization solution of the present utility model, the outer walls of the four threaded rotating drums 7 are all provided with anti-slip grooves.
[0028] In this embodiment, anti-skid patterns are provided to improve the anti-skid effect when the four threaded drums 7 are rotated.
[0029] Working principle: First, make the four supporting feet 10 contact with the concrete surface to be tested. When there are protrusions or depressions or other factors affecting the flatness at the contact points, the four threaded rotating cylinders 7 can be rotated respectively, so that the four threaded disks 8 can be moved up and down a certain distance, and at the same time, the four adjusting rods 9 and the four supporting feet 10 can be driven to move up and down until the level 11 displays a horizontal state. At this time, it can be ensured that the rebound tester body 1 is perpendicular to the surface to be tested, and then the horizontal frame 2 is pressed. Since the rebound tester body 1 can slide up and down with the three sliding rods 4, the impact rod of the rebound tester body 1 can be locked and pressed down to perform impact detection. In this process, the rebound tester body 1 and the impact rod are always perpendicular to the ground, so as to achieve the effect of keeping the rebound tester body 1 level with the test surface during detection through auxiliary positioning, so as to improve the detection accuracy.
[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An auxiliary positioning device for a rebound hammer, comprising a rebound hammer body (1), characterized in that: A horizontal frame (2) is arranged outside the rebound tester body (1); the outer wall of the rebound tester body (1) is fixedly connected with fixing rings (3) respectively located on the upper and lower sides of the horizontal frame (2); three sliding rods (4) penetrating the horizontal frame (2) and slidably connected thereto are fixedly connected between the two fixing rings (3); vertical plates (5) are fixedly connected to the left and right sides of the lower end of the horizontal frame (2); the two sides of the two vertical plates (5) facing each other are fixedly connected with horizontal plates (6); the two horizontal plates ( 6) Threaded rotating cylinders (7) are provided on both the front and rear sides of the upper end surface, and the inner walls of the four threaded rotating cylinders (7) are threadedly connected with threaded disks (8), and guide holes (13) are penetrated through the front and rear sides of the upper end surfaces of the two horizontal plates (6), and the lower ends of the four threaded disks (8) are fixedly connected with adjustment rods (9) passing through the four guide holes (13), and the lower ends of the four adjustment rods (9) are fixedly connected with support feet (10), and a spirit level (11) is provided on the left side of the horizontal frame (2).
2. The auxiliary positioning device of a rebound hammer according to claim 1, characterized in that: The four adjusting rods (9) are respectively slidably connected to the inner walls of the four guide holes (13) via two slide rails distributed front and back.
3. The auxiliary positioning device of a rebound hammer according to claim 1, characterized in that: Two threaded rotating drums (7) located on the same side are rotatably connected to the upper end surfaces of the two horizontal plates (6) via bearings.
4. The auxiliary positioning device of a rebound hammer according to claim 1, characterized in that: The front end of the horizontal frame (2) is provided with an opening.
5. The auxiliary positioning device of a rebound hammer according to claim 1, characterized in that: A horizontal fixing plate (12) is fixedly connected to the left side of the horizontal frame (2), and the level (11) is installed on the upper end surface of the horizontal fixing plate (12).
6. The auxiliary positioning device of a rebound hammer according to claim 1, characterized in that: The outer walls of the four threaded rotating cylinders (7) are all provided with anti-slip grooves.