A concrete rebound tester
By designing the nesting structure of the connecting rod and stop in the concrete rebound instrument, as well as the coordination of the collar and positioning column in the annular cavity, the problem of rebound impact caused by the unprotected metal end of the traditional concrete rebound instrument is solved, and the safety of the equipment is improved and the measurement accuracy is measured.
Patent Information
- Application Number
- CN202421139861.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-23
AI Technical Summary
After use, the traditional portable concrete rebound instrument has no protective structure design on the metal end, which is prone to rebound and impact due to external force extrusion, affecting service life and portability safety.
A concrete rebound instrument is designed. Through the coordination of the connecting rod and the stop, it is nested with the metal head of the concrete rebound instrument body through the buckle groove at the center of the side of the stop when not in use to avoid rebound impact, and through the coordination of the collar and positioning column in the annular cavity, the accuracy of the extrusion direction is improved.
It effectively avoids the impact problem caused by rebound caused by metal heads under compression, and improves the safety of the use of concrete rebound instruments and measurement accuracy.
Smart Images
Figure CN222719356U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete hardness detection, in particular to a concrete rebound tester. Background Art
[0002] At present, in the field of construction, in order to ensure the structural strength of the building structure, high requirements are placed on the structural strength of concrete. At present, the main tool for testing the strength of concrete structures is the concrete rebound tester. The rebound force of the concrete rebound tester is used to detect the strength of the concrete structure and realize the conversion of the concrete structure strength.
[0003] During the use of traditional portable concrete rebound testers, we found that the metal end of the concrete rebound tester had no protective structure design. When the metal end of the concrete rebound tester was squeezed by external force, it was easy to produce rebound and impact problems, which not only affected the service life of the concrete rebound tester, but also affected the safety of carrying. For this reason, we designed a concrete rebound tester. Utility Model Content
[0004] The utility model aims to provide a concrete rebound tester to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a concrete rebound tester, comprising a concrete rebound tester body, both sides of the concrete rebound tester body are rotatably connected with connecting rods, one end of the two connecting rods is slidably connected with a stopper, an annular cavity is opened inside the concrete rebound tester body, a ring is nested inside the annular cavity, a plurality of positioning columns are equidistantly fixed at the bottom end of the ring, and the bottom ends of the plurality of positioning columns pass through the annular cavity and extend to the outside.
[0006] Preferably, a rubber sheet is fixedly provided at the center of the outer walls of the two connecting rods, and evenly distributed anti-slip strips are fixedly provided on the surface of the rubber sheet.
[0007] Preferably, a sliding groove is provided on one side of the inner wall of the two connecting rods, and a slider is slidably connected to the inside of the two sliding grooves. The front sides of the two sliders are fixedly connected to the two sides of the block, and a return spring is fixedly installed on one side groove wall of the two sliding grooves, and one end of the return spring is fixedly connected to the side of the corresponding slider.
[0008] Preferably, a buckle groove is provided at the center of one side of the stopper, the inner diameter of the buckle groove is the same as the size of the metal end of the concrete rebound test hammer body, and the other side of the stopper is fixedly provided with evenly distributed anti-slip protrusions.
[0009] Preferably, an end cover is fixedly provided at the other end of the concrete rebound test hammer body, a buckle block is fixedly provided at the center of the end cover, and the buckle block is buckled and connected with the buckle groove.
[0010] Preferably, the surface of the concrete rebound test hammer body is provided with two through grooves connected to the annular cavity, the interiors of the two through grooves are slidably connected with push blocks, the bottom ends of the two push blocks are fixed with connecting blocks, and the bottom ends of the connecting blocks are fixedly connected to the outer wall of the ring.
[0011] Preferably, the outer walls at the ends of the plurality of positioning posts are provided with evenly distributed anti-slip grooves.
[0012] Technical effects and advantages of the utility model:
[0013] 1. Through the cooperation of the connecting rod and the stopper, when the concrete rebound test hammer body is not in use, the buckle groove opened at the center of the side of the stopper is nested with the metal head of the concrete rebound test hammer body, which effectively avoids the problem of the metal head of the concrete rebound test hammer body being compressed and causing rebound and collision, and improves the safety of carrying the concrete rebound test hammer body.
[0014] 2. The ring is sleeved inside the annular cavity, and the ring slides inside the annular cavity through the cooperation of the push block and the connecting block. The positioning column is provided at the bottom of the ring. When in use, the extrusion direction can be corrected through the positioning column, thereby improving the accuracy of the extrusion direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a structural schematic diagram of a concrete rebound tester.
[0016] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of a connecting rod of a concrete rebound tester.
[0017] Figure 3 The utility model is a concrete rebound tester Figure 2 A partial enlarged view of point A in the middle.
[0018] Figure 4 The utility model is a schematic diagram of a sleeve ring structure of a concrete rebound tester.
[0019] In the figure: 1. Concrete rebound tester body; 2. Connecting rod; 3. Stop block; 4. Anti-skid protrusion; 5. Rubber sheet; 6. End cover; 7. Through groove; 8. Push block; 9. Positioning column; 10. Buckle groove; 11. Buckle block; 12. Slide groove; 13. Reset spring; 14. Sliding block; 15. Annular cavity; 16. Ring; 17. Connecting block. DETAILED DESCRIPTION
[0020] 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.
[0021] The utility model provides Figure 1-4 A concrete rebound test hammer shown in the figure comprises a concrete rebound test hammer body 1, both sides of the concrete rebound test hammer body 1 are rotatably connected with connecting rods 2, one end of the two connecting rods 2 is slidably connected with a stopper 3, an annular cavity 15 is opened inside the concrete rebound test hammer body 1, a ring 16 is nested inside the annular cavity 15, a plurality of positioning columns 9 are equidistantly fixed at the bottom end of the ring 16, and the bottom ends of the plurality of positioning columns 9 pass through the annular cavity 15 and extend to the outside.
[0022] Specifically, through the cooperation of the connecting rod 2 and the stopper 3, when the concrete rebound test hammer body 1 is not in use, the metal head of the concrete rebound test hammer body 1 is protected by the stopper 3, which effectively avoids the problem of the metal head of the concrete rebound test hammer body 1 being compressed and rebounding to cause collision, thereby improving the safety of the use of the concrete rebound test hammer body 1.
[0023] according to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a rubber sheet 5 is fixedly provided at the center of the outer wall of the two connecting rods 2, and evenly distributed anti-slip strips are fixedly provided on the surface of the rubber sheet 5.
[0024] Specifically, the anti-slip strips are provided to improve the anti-slip performance when holding the device.
[0025] A slide groove 12 is provided on one side of the inner wall of the two connecting rods 2, and a slider 14 is slidably connected inside the two slide grooves 12. The front sides of the two sliders 14 are fixedly connected to the two sides of the block 3, and a return spring 13 is fixedly installed on one side of the groove wall of the two slide grooves 12, and one end of the return spring 13 is fixedly connected to the side of the corresponding slider 14.
[0026] Specifically, the reset spring 13 controls the reset of the slider 14 to achieve the movement and reset of the stopper 3, and the buckle groove 10 at the center of the side of the stopper 3 can be buckled with the buckle block 11 or nested with the metal end of the concrete rebound tester body 1.
[0027] A buckle groove 10 is provided at the center of one side of the stopper 3 , and the inner diameter of the buckle groove 10 is the same as the size of the metal end of the concrete rebound test hammer body 1 . The other side of the stopper 3 is fixedly provided with uniformly distributed anti-slip protrusions 4 .
[0028] Specifically, the anti-slip protrusion 4 provided on the other side of the stopper 3 improves the stability of pressing during the pressing process.
[0029] An end cover 6 is fixedly provided at the other end of the concrete rebound test hammer body 1 , and a buckle block 11 is fixedly provided at the center of the end cover 6 . The buckle block 11 is buckled and connected with the buckle groove 10 .
[0030] Specifically, the buckle block 11 is buckled with the buckle groove 10 to fix the stopper 3, thereby preventing the stopper 3 from rotating with the connecting rod 2 during use.
[0031] The surface of the concrete rebound test hammer body 1 is provided with two through grooves 7 connected to the annular cavity 15, and the insides of the two through grooves 7 are slidably connected with push blocks 8. The bottom ends of the two push blocks 8 are fixed with connecting blocks 17, and the bottom ends of the connecting blocks 17 are fixedly connected to the outer wall of the ring 16.
[0032] Specifically, through the cooperation of the push block 8 and the connecting block 17, the push block 8 can push the movement of the ring 16, and the push block 8 can push the ring 16 to move, so that the positioning column 9 connected to the bottom of the ring 16 is pushed out of the annular cavity 15. When the concrete rebound test hammer body 1 is used, the positioning is performed by the positioning column 9, which improves the accuracy of the concrete rebound test hammer body 1 when pressing the concrete surface.
[0033] The outer walls at the ends of the plurality of positioning posts 9 are provided with uniformly distributed anti-skid patterns. Specifically, through the anti-skid patterns provided on the surfaces of the ends of the positioning posts 9, when the positioning posts 9 are received inside the annular cavity 15, the friction between the positioning posts 9 and the portion passing through the annular cavity 15 prevents the positioning posts 9 from sliding outward.
[0034] Working principle of the utility model: when using the concrete rebound tester body 1, firstly, manually pull the stopper 3 to separate the buckle groove 10 at the center of the side of the stopper 3 from the metal head at the end of the concrete rebound tester body 1, then rotate the connecting rod 2 to rotate the connecting rod 2 180 degrees, then pull the stopper 3 again to make the buckle groove 10 at the center of the side of the stopper 3 buckle and fix with the buckle block 11 on the surface of the end cover 6, then manually push the two push blocks 8 on the surface, push the ring 16 to move through the push block 8, push the positioning column 9 to move through the movement of the ring 16, so that the end of the positioning column 9 contacts with the pressing periphery, and then press the concrete rebound tester body 1 downward to measure the concrete strength.
[0035] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.
Claims
1. A concrete rebound test hammer, comprising a concrete rebound test hammer body (1), characterized in that: Both sides of the concrete rebound test hammer body (1) are rotatably connected to connecting rods (2), one end of the two connecting rods (2) is slidably connected to a stopper (3), an annular cavity (15) is provided inside the concrete rebound test hammer body (1), a collar (16) is nested inside the annular cavity (15), a plurality of positioning columns (9) are fixedly provided at equal intervals at the bottom end of the collar (16), and the bottom ends of the plurality of positioning columns (9) pass through the annular cavity (15) and extend to the outside.
2. A concrete rebound test hammer according to claim 1, characterized in that: A rubber sheet (5) is fixedly provided at the center of the outer wall of the two connecting rods (2), and evenly distributed anti-slip strips are fixedly provided on the surface of the rubber sheet (5).
3. A concrete rebound tester according to claim 2, characterized in that: A slide groove (12) is provided on one side of the inner wall of the two connecting rods (2), and a slider (14) is slidably connected inside the two slide grooves (12). The front sides of the two sliders (14) are fixedly connected to the two sides of the stopper (3), and a return spring (13) is fixedly installed on one side of the groove wall of the two slide grooves (12), and one end of the return spring (13) is fixedly connected to the side of the corresponding slider (14).
4. A concrete rebound test hammer according to claim 3, characterized in that: A buckle groove (10) is provided at the center of one side of the stopper (3), the inner diameter of the buckle groove (10) being the same as the size of the metal end of the concrete rebound test hammer body (1), and evenly distributed anti-slip protrusions (4) are fixedly provided on the other side of the stopper (3).
5. A concrete rebound test hammer according to claim 4, characterized in that: An end cover (6) is fixedly provided at the other end of the concrete rebound tester body (1), a buckle block (11) is fixedly provided at the center of the end cover (6), and the buckle block (11) is buckled and connected with the buckle groove (10).
6. A concrete rebound test hammer according to claim 5, characterized in that: The surface of the concrete rebound test hammer body (1) is provided with two through grooves (7) connected to the annular cavity (15); the interiors of the two through grooves (7) are slidably connected with push blocks (8); the bottom ends of the two push blocks (8) are fixedly provided with connecting blocks (17); the bottom ends of the connecting blocks (17) are fixedly connected to the outer wall of the collar (16).
7. The concrete rebound test hammer according to claim 1, characterized in that: The outer walls at the ends of the plurality of positioning posts (9) are provided with evenly distributed anti-slip grooves.