A precast concrete component bounce tester

Abstract

This utility model provides a precast concrete component bounce tester, belonging to the technical field of bounce testers. It includes a testing platform, a cylinder fixedly mounted on a mounting frame, and a digital display rebound hammer fixedly mounted at the output end of the cylinder. A component to be tested is placed on the testing platform. A cleaning mechanism is provided on one side of the component, including a lifting frame. A cleaning brush is rotatably connected to the lifting frame. When the lifting frame descends, the cleaning brush first contacts the surface of the component. As the lifting frame continues to descend, a support frame rotates around a hinge point, pushing the cleaning brush to translate along the component surface, achieving comprehensive cleaning, ensuring lossless transmission of impact energy, and eliminating errors. After cleaning, the support frame and the inverted L-shaped lifting frame form a right-angle self-locking mechanism, pressing the component to be tested, preventing point deviations caused by component displacement during testing, achieving continuity of cleaning, fixing, and testing, reducing variables introduced by human contact, and improving the convenience and accuracy of testing.

Description

Technical Field

[0001] This utility model relates to the field of bounce tester technology, and more specifically, to a bounce tester for precast concrete components. Background Technology

[0002] A concrete component bounce tester, also known as a rebound hammer, is a non-destructive testing tool that indirectly estimates the compressive strength of concrete based on surface hardness. It is mainly used for on-site rapid assessment of the strength uniformity and whether the concrete structure meets the requirements for new or existing structures. It is suitable for various common components such as beams, columns, slabs, and walls. Its core structure includes a hammer, spring, rod that generates the impact, and a digital display system that indicates the rebound height.

[0003] For example, a concrete rebound testing device disclosed in the prior art with patent number CN222733952U includes a limiting component for fixing on both sides of the precast concrete. A rebound hammer auxiliary component is vertically fixed on the limiting component by bolts. Since the rebound hammer auxiliary component is vertically set on the limiting component, the rebound hammer is driven to move back and forth by a cylinder. The rebound hammer matches the sliding rod through the sliding hole on the rebound hammer bracket, so that the rebound hammer always remains perpendicular to the concrete testing surface. The testing accuracy is high, and no manual operation of the rebound hammer is required, saving time and effort.

[0004] However, existing rebound testing equipment tests concrete components without removing surface dust. The dust buffering effect causes errors in the rebound value. When cleaning is done manually, cleaning, fixing, and testing are performed in separate steps, requiring multiple manual interventions, making the testing process neither simple nor fast. Utility Model Content

[0005] The main objective of this invention is to provide a precast concrete component bounce tester, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A precast concrete component bounce tester includes a test platform, which is fixedly installed on a cabinet. A mounting frame is fixedly installed on the test platform, and a cylinder is fixedly installed on the mounting frame. A digital display rebound hammer is fixedly installed at the output end of the cylinder. A component to be tested is placed on the test platform, and a cleaning mechanism is provided on one side of the component to be tested. The cleaning mechanism includes a lifting frame, and a cleaning brush is rotatably connected to the lifting frame.

[0008] Preferably, a guide rod slides through the mounting bracket, and a mounting base is fixedly connected to the bottom of the guide rod. The mounting base is fixedly sleeved on the digital display rebound spring.

[0009] Preferably, the lifting frame slides through the testing table, and both sides of the lifting frame are slidably connected to the first guide frame, which is fixedly installed on the upper surface of the testing table.

[0010] Preferably, a support frame is hinged to the upper end of the lifting frame, and a torsion spring connects the support frame and the lifting frame.

[0011] Preferably, the cleaning brush is fixedly installed at the lower end of the support frame, and inclined blocks are fixedly connected to the inner walls on both sides of the lifting frame, with one side of the support frame abutting against the inclined blocks.

[0012] Preferably, the lower end of the lifting frame extends into the cabinet, and a rack is fixedly connected to its lower surface.

[0013] Preferably, the rack is slidably connected inside the second guide frame, and the second guide frame is fixedly installed on the lower surface of the testing table.

[0014] Preferably, a motor is fixedly installed inside the cabinet, and a gear is fixedly connected to the output end of the motor, the gear meshing with a rack.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The rebound test is completed by the cylinder driving the digital display rebound tester to press vertically down along the guide rod and impact the surface of the component to be tested. The guide rod constrains the movement trajectory and prevents deviation. The cylinder replaces manual impact, improving test efficiency and consistency.

[0017] (2) When the lifting frame descends, the cleaning brush first contacts the surface of the component to be tested. As the lifting frame continues to move down, the support frame rotates around the hinge point, pushing the cleaning brush to move along the surface of the component to achieve comprehensive dust removal, thereby ensuring the lossless transmission of impact energy.

[0018] (3) After the dust removal is completed, the support frame and the inverted L-shaped lifting frame form a right-angle self-locking mechanism, which presses the component to be tested, eliminates the point deviation caused by component displacement during the test, realizes the continuity of cleaning, fixing and testing, reduces variables introduced by human contact, and improves the convenience and accuracy of the test. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0021] Figure 3 This is a three-dimensional schematic diagram of the cleaning mechanism in this utility model;

[0022] Figure 4This is a partial cross-sectional structural diagram of the present invention;

[0023] Figure 5 This utility model Figure 4 Enlarged view of the structure at point B in the middle.

[0024] In the diagram: 1. Cabinet; 11. Testing table; 12. Mounting frame; 2. Cleaning mechanism; 21. Lifting frame; 22. Support frame; 23. Cleaning brush; 24. First guide frame; 25. Inclined block; 26. Rack; 27. Gear; 28. Motor; 29. ​​Second guide frame; 210. Torsion spring; 3. Cylinder; 31. Guide rod; 32. Mounting base; 4. Digital display rebound hammer; 5. Component to be tested. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0026] like Figures 1-3 As shown in the figure, this utility model embodiment proposes a precast concrete component bounce tester, including a test platform 11, which is fixedly installed on a cabinet 1. A mounting frame 12 is fixedly installed on the test platform 11, and a cylinder 3 is fixedly installed on the mounting frame 12. A digital display rebound hammer 4 is fixedly installed at the output end of the cylinder 3. A component 5 to be tested is placed on the test platform 11, and a cleaning mechanism 2 is provided on one side of the component 5. The cleaning mechanism 2 includes a lifting frame 21, and a cleaning brush 23 is rotatably connected to the lifting frame 21.

[0027] like Figure 1 , Figure 2 As shown, a guide rod 31 slides through the mounting bracket 12, and a mounting base 32 is fixedly connected to the bottom of the guide rod 31. The mounting base 32 is fixedly sleeved on the digital display rebound spring 4.

[0028] The cylinder 3 drives the digital rebound tester 4 to press vertically down along the guide rod 31, impacting the surface of the component under test 5 to complete the bounce test. The guide rod 31 constrains the movement trajectory to prevent deviation. The cylinder 3 replaces manual impact, improving test efficiency and consistency.

[0029] like Figure 1 , Figures 3-5As shown, the lifting frame 21 slides through the testing table 11. The two sides of the lifting frame 21 are slidably connected to the first guide frame 24. The first guide frame 24 is fixedly installed on the upper surface of the testing table 11. A support frame 22 is hinged to the upper end of the lifting frame 21. A torsion spring 210 is connected between the support frame 22 and the lifting frame 21. A cleaning brush 23 is fixedly installed at the lower end of the support frame 22. Inclined blocks 25 are fixedly connected to the inner walls on both sides of the lifting frame 21. One side of the support frame 22 abuts against the inclined block 25.

[0030] In this application, the lifting frame 21 has an inverted L-shaped structure. When the lifting frame 21 descends, the cleaning brush 23 first contacts the surface of the component 5 to be tested. As the lifting frame 21 continues to move down, the support frame 22 rotates around the hinge point, pushing the cleaning brush 23 to translate along the surface of the component, thereby achieving comprehensive dust removal and ensuring the lossless transmission of impact energy.

[0031] As the lifting frame 21 descends, the opening angle of the support frame 22 gradually increases until it forms a right angle with the lifting frame 21, thereby pressing the component 5 to be tested, preventing displacement during testing, achieving continuity of cleaning, fixing and testing, reducing variables introduced by human contact, and improving the convenience and accuracy of testing.

[0032] like Figure 1 , Figure 3 , Figure 4 As shown, the lower end of the lifting frame 21 extends into the cabinet 1, and a rack 26 is fixedly connected to the lower surface. The rack 26 is slidably connected to the second guide frame 29. The second guide frame 29 is fixedly installed on the lower surface of the testing table 11. A motor 28 is fixedly installed inside the cabinet 1. A gear 27 is fixedly connected to the output end of the motor 28. The gear 27 meshes with the rack 26.

[0033] The motor 28 drives the gear 27 to rotate, which in turn drives the rack 26 to rise and fall along the second guide frame 29, causing the lifting frame 21 to rise and fall synchronously, thereby controlling the lifting and pressing of the cleaning brush 23.

[0034] The motor 28, gear 27, and rack 26 provide stable linear motion, and the cleaning stroke is programmable controlled. The first guide frame 24 and the second guide frame 29 work together with the lifting frame 21 and the rack 26 to prevent swaying and improve the rigidity of the mechanism.

[0035] The working principle of this precast concrete component bounce tester:

[0036] During operation, the component 5 to be tested is first cleaned and fixed. The lifting frame 21 is lowered by starting the motor 28. After the cleaning brush 23 contacts the surface of the component, the support frame 22 rotates and unfolds. The cleaning brush 23 moves along the surface of the component 5 to clean the dust. After cleaning, the support frame 22 and the inverted L-shaped lifting frame 21 form a right-angle self-locking, pressing the component 5 to be tested. Then, a bounce test is performed. The digital display rebound hammer 4 is pushed by starting the cylinder 3 to vertically impact the surface of the component 5 to be tested along the guide rod 31. The impact hammer inside the digital display rebound hammer 4 strikes the impact rod with constant kinetic energy under the action of the spring. When the impact hammer rebounds, the magnetoelectric sensor inside the digital display rebound hammer 4 captures the peak value of the rebound displacement in real time. The built-in processor converts the rebound value into an intensity value and displays it on the screen. After the test, the motor 28 raises the cleaning mechanism 2 to release the self-locking and remove the component.

[0037] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A precast concrete component bounce tester, comprising a detection table (11) fixedly installed on a cabinet (1), and a mounting rack (12) fixedly installed on the detection table (11), characterized in that: A cylinder (3) is fixedly installed on the mounting frame (12). A digital display rebound hammer (4) is fixedly installed at the output end of the cylinder (3). A component to be tested (5) is placed on the testing table (11). A cleaning mechanism (2) is provided on one side of the component to be tested (5). The cleaning mechanism (2) includes a lifting frame (21). A cleaning brush (23) is rotatably connected to the lifting frame (21).

2. A precast concrete element bounce tester according to claim 1, characterised in that: A guide rod (31) slides through the mounting bracket (12), and a mounting base (32) is fixedly connected to the bottom of the guide rod (31). The mounting base (32) is fixedly sleeved on the digital display rebound spring (4).

3. A precast concrete element bounce tester according to claim 1, characterised in that: The lifting frame (21) slides through the testing table (11), and the two sides of the lifting frame (21) are respectively slidably connected to the first guide frame (24), which is fixedly installed on the upper surface of the testing table (11).

4. A precast concrete element bounce tester according to claim 1, characterised in that: The upper end of the lifting frame (21) is hinged to a support frame (22), and a torsion spring (210) is connected between the support frame (22) and the lifting frame (21).

5. The precast concrete component bounce tester according to claim 4, characterized in that: The cleaning brush (23) is fixedly installed at the lower end of the support frame (22). Inclined blocks (25) are fixedly connected to the inner walls on both sides of the lifting frame (21). One side of the support frame (22) abuts against the inclined block (25).

6. The precast concrete component bounce tester according to claim 1, characterized in that: The lower end of the lifting frame (21) extends into the cabinet (1), and a rack (26) is fixedly connected to the lower surface.

7. The precast concrete component bounce tester according to claim 6, characterized in that: The rack (26) is slidably connected to the second guide frame (29), which is fixedly installed on the lower surface of the testing table (11).

8. The precast concrete component bounce tester according to claim 6, characterized in that: A motor (28) is fixedly installed inside the cabinet (1). A gear (27) is fixedly connected to the output end of the motor (28). The gear (27) meshes with the rack (26).

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