High-strength digital resiliometer

Abstract

The utility model belongs to the technical field of rebound instruments, and particularly relates to a high-strength digital rebound instrument which comprises a mechanical mechanism, an electronic bin is detachably connected to the outer side of the mechanical mechanism, and the mechanical mechanism comprises a shell, a bouncing tension spring, a bouncing hammer, a bouncing rod, a pointer block, a pointer, a ruler and a hook assembly. The rigidity coefficient of the elastic tension spring is 865N / m + / -30N / m, 900N / m + / -40N / m or 1100N / m + / -50N / m; the length of each scale division of the scale is 0.75 mm, 0.75 mm or 1 mm; the scale division number of the scale plate is 120, 133.3 or 100; compared with the prior art, the mechanical and digital combination can be met, the concrete strength detected by the rebound apparatus can be more accurate, and the problem of poor stability of the rebound apparatus is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rebound testers, and in particular relates to a high-strength digital rebound tester. Background Art

[0002] At present, rebound test hammers are often used in construction projects, mainly for testing the strength of concrete. The rebound test hammer uses a rebound rod to contact and collide with the concrete surface, causing the concrete to deform and absorb part of the energy, and the other part of the energy is converted into the rebound kinetic energy of the rebound hammer.

[0003] However, the existing high-strength mechanical rebound tester can only read the rebound value through a ruler, and the spring rigidity coefficient of the mechanical rebound tester cannot meet the high-strength detection.

[0004] In addition, the existing rebound tester uses a contact piece to slide on a resistor piece, thereby causing a change in voltage, which can lead to problems such as poor stability of the rebound tester. Utility Model Content

[0005] In view of the above problems, the utility model provides a high-strength digital rebound tester.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-strength digital rebound tester, including a mechanical mechanism, the outer side of the mechanical mechanism is detachably connected with an electronic compartment, the mechanical mechanism includes a shell, a spring, a hammer, a rod, a pointer block, a pointer, a ruler and a hook assembly; the rigidity coefficient of the spring is 865N / m±30N / m, 900N / m±40N / m or 1100N / m±50N / m; the length of each division of the ruler is 0.75mm, 0.75mm or 1mm; the number of divisions of the ruler is 120, 133.3 or 100.

[0007] Preferably, a plurality of displacement sensors are installed in the electronic compartment, and a display, a key area and a reactor are installed in the electronic compartment, a detection component is installed on the pointer block, the detection component cooperates with the displacement sensor, and the displacement sensor, the key area and the display are all communicatively connected with the reactor.

[0008] Preferably, a plurality of adjacent displacement sensors are spaced a certain distance apart.

[0009] Preferably, the outer side of the ruler is set as a transparent frame.

[0010] Preferably, the detection member is a magnetic block, and the displacement sensor is a magnetic field sensor.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] (1) The existing mechanical rebound tester can only obtain the deformation length of the spring through a ruler, but the utility model cooperates with the detection part and the displacement sensor. The displacement sensor transmits an electrical signal to the reactor, and the reactor transmits the rebound value to the display. In addition, a ruler is installed in the electronic compartment, so the rebound value can be obtained by both digital and mechanical methods.

[0013] (2) The rigidity coefficient of the impact spring is 865N / m±30N / m, 900N / m±40N / m or 1100N / m±50N / m, which can meet the rigidity requirements of the rebound hammer for 3.5 joules, 4.5 joules or 5.5 joules, making the rebound hammer more accurate in testing concrete strength;

[0014] (3) The problem of poor stability of the rebound tester can be solved by combining the detection part with the displacement sensor;

[0015] (4) The utility model not only meets the requirements of combining mechanical and digital technology, but also enables the rebound hammer to detect concrete strength more accurately, thus solving the problem of poor stability of the rebound hammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for describing the embodiment:

[0017] Figure 1 The internal structure diagram of the high-strength digital rebound hammer provided in Example 1;

[0018] Figure 2 This is the main view of the high-strength digital rebound tester.

[0019] Description of reference numerals:

[0020] 1—housing, 2—striking spring, 3—striking hammer, 4—striking rod, 5—hook assembly, 6—electronic compartment, 7—ruler. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Example 1

[0024] The following is combined with Figure 1-Figure 2 To further describe the utility model, a high-strength digital rebound tester, such as Figure 1-Figure 2As shown, it includes a mechanical mechanism, and the outer side of the mechanical mechanism is detachably connected with an electronic compartment. The mechanical mechanism includes a shell 1, a spring 2, a hammer 3, a rod 4, a pointer block, a pointer, a ruler 7 and a hook assembly 5 (the internal interconnection relationship is all prior art), the hammer 3 cooperates with the hook assembly 5, the end of the hammer 3 contacts the rod 4, the rod 4 passes through the shell 1, the spring 2 is installed between the end of the shell 1 and the hammer 3, a detection part is installed on the pointer block, the detection part cooperates with the displacement sensor, and the displacement sensor, the key area and the display are all connected to the reactor for communication.

[0025] like Figure 1 As shown, the stiffness coefficient of the impact tension spring 2 is 865N / m±30N / m, 900N / m±40N / m or 1100N / m±50N / m.

[0026] When the rebound hammer is 3.5 joules, the rigidity coefficient of the impact tension spring 2 is 865N / m±30N / m; when the rebound hammer is 4.5 joules, the rigidity coefficient of the impact tension spring 2 is 900N / m±40N / m; when the rebound hammer is 5.5 joules, the rigidity coefficient of the impact tension spring 2 is 1100N / m±50N / m.

[0027] A plurality of displacement sensors are adjacent to each other and are spaced a certain distance apart. The detection element is a magnetic block, and the displacement sensor is a magnetic field sensor.

[0028] like Figure 2 As shown, the outer side of the scale 7 is set as a transparent frame.

[0029] The length of each division of the scale 7 is 0.75 mm, 0.75 mm or 1 mm, and the number of divisions of the scale 7 is 120, 133.3 or 100.

[0030] When the rebound hammer is 3.5 joules, the length of each division of the scale 7 is 0.75 mm, and the number of divisions is 120; when the rebound hammer is 4.5 joules, the length of each division of the scale 7 is 0.75 mm, and the number of divisions is 133.3; when the rebound hammer is 5.5 joules, the length of each division of the scale 7 is 1 mm, and the number of divisions is 100.

[0031] In the present utility model, the displacement sensor is a Hall sensor.

[0032] The working principle of the utility model is as follows: when the impact hammer 3 moves, it pushes the pointer block to drive the detection part to move, the displacement sensor senses the movement displacement of the detection part, transmits the electrical signal to the reactor, the reactor calculates the rebound value, and the reactor transmits the rebound value to the display.

[0033] As the technical solution of the utility model, the hardware setting provided is only for the convenience of realizing specific braking control on the basis of hardware facilities. How to realize braking control and braking control method specifically are not the technical problems to be solved and the objects to be protected by the utility model. At the same time, the communication methods between the devices all adopt the existing communication methods, which are not the utility model points of the present application.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A high-strength digital rebound tester, comprising a mechanical mechanism, characterized in that: The outer side of the mechanical mechanism is detachably connected to an electronic compartment (6), and the mechanical mechanism comprises a housing (1), a spring (2), a spring hammer (3), a spring rod (4), a pointer block, a pointer, a scale (7) and a hook assembly (5); the rigidity coefficient of the spring (2) is 865N / m±30N / m, 900N / m±40N / m or 1100N / m±50N / m; the length of each division of the scale (7) is 0.75mm, 0.75mm or 1mm; the number of divisions of the scale (7) is 120, 133.3 or 100.

2. The high-strength digital rebound tester according to claim 1, characterized in that: A plurality of displacement sensors are installed in the electronic compartment (6), and a display, a key area and a reactor are installed in the electronic compartment (6); a detection component is installed on the pointer block, the detection component cooperates with the displacement sensor, and the displacement sensor, the key area and the display are all communicatively connected with the reactor.

3. The high-strength digital rebound tester according to claim 2, characterized in that: A plurality of adjacent displacement sensors are spaced a certain distance apart.

4. The high-strength digital rebound tester according to claim 1, characterized in that: The outer side of the ruler (7) is provided with a transparent frame.

5. The high-strength digital rebound hammer according to claim 2, characterized in that: The detection member is a magnetic block, and the displacement sensor is a magnetic field sensor.

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