Positioning device for resiliometer

Abstract

The utility model discloses a positioning device for a resiliometer. The positioning device comprises a positioning cylinder, the mounting seat is slidably mounted in the positioning cylinder; the resiliometer body is mounted on the mounting seat; a plurality of strip-shaped through holes are uniformly distributed in the side wall of the positioning cylinder; the connecting block is located on the inner side of the strip-shaped through opening. The connecting ring is slidably mounted on the outer side of the positioning cylinder, and the other ends of the connecting blocks are connected with the inner wall of the connecting ring; the guide rod is arranged in the strip-shaped through opening and penetrates through the connecting block. And the spring is arranged on the outer side of the guide rod and is positioned between the inner wall, close to the open end of the positioning cylinder, of the strip-shaped through hole and the connecting block. And when the elastic rod of the rebound apparatus is in contact with the concrete for many times, the perpendicularity can be kept without depending on the experience of detection personnel, so that the accuracy of a detection result is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of rebound hammers, and specifically relates to a positioning device for a rebound hammer. Background Art

[0002] A rebound hammer is used to test the compressive strength of concrete and is the most widely used non-destructive testing instrument for the compressive strength of concrete in on-site testing. Its basic principle is to use a spring to drive a heavy hammer, and the heavy hammer impacts a striker that is in perpendicular contact with the concrete surface with a constant kinetic energy, causing local 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 heavy hammer. When the rebound kinetic energy is all converted into potential energy, the heavy hammer rebounds to the maximum distance, and the instrument displays the maximum rebound distance of the heavy hammer as a rebound value.

[0003] Currently, for existing rebound hammers, testers need to continuously adjust their holding postures according to experience to ensure the perpendicularity of the rebound hammer to the concrete test surface. However, since the striker of the rebound hammer needs to contact the concrete multiple times, it is often difficult to maintain perpendicularity relying on the experience of the tester, which affects the accuracy of the test results. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a positioning device for a rebound hammer to solve the problem that it is often difficult to maintain perpendicularity relying on the experience of the tester, which affects the accuracy of the test results.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A positioning device for a rebound hammer, comprising:

[0006] A positioning cylinder;

[0007] A mounting seat, slidably mounted inside the positioning cylinder;

[0008] A rebound hammer body, mounted on the mounting seat;

[0009] A plurality of strip-shaped through openings, which are provided and evenly distributed on the side wall of the positioning cylinder;

[0010] A connecting block, located inside the strip-shaped through opening, and one end thereof is connected to the mounting seat;

[0011] A connecting ring, slidably mounted outside the positioning cylinder, and the other ends of a plurality of the connecting blocks are all connected to the inner wall of the connecting ring;

[0012] A guide rod, arranged in the strip-shaped through opening and penetrating through the connecting block;

[0013] A spring, arranged outside the guide rod and located between the inner wall of the strip-shaped through opening close to the opening end of the positioning cylinder and the connecting block.

[0014] Preferably, a plurality of supporting gussets are provided on the side wall of the positioning cylinder near the opening end, and the contact end of the supporting gusset is set as a rough surface.

[0015] Preferably, a buffer pad is provided on the inner wall of the strip-shaped through opening far from the opening end of the positioning cylinder and outside the guide rod.

[0016] Preferably, a gap is provided between the rebound instrument body and the bottom of the positioning cylinder.

[0017] Preferably, a handheld part is provided on the connecting ring.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: A positioning device for a rebound instrument provided by the present invention drives the connecting ring, the connecting block and the rebound instrument body to move for detection. At the same time, the spring is compressed during the movement of the connecting block, and a force towards the concrete detection surface is applied to the positioning cylinder through the elastic force of the spring, ensuring the stability of the perpendicularity of the positioning cylinder in contact with the concrete. When the impact rod of the rebound instrument contacts the concrete multiple times, it is not necessary to rely on the experience of the tester to maintain perpendicularity, avoiding affecting the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a main cross-sectional structural schematic diagram of the present invention.

[0020] In the figure: 1, positioning cylinder; 2, mounting seat; 3, rebound instrument body; 4, strip-shaped through opening; 5, connecting block; 6, connecting ring; 7, guide rod; 8, spring; 9, supporting gusset; 10, buffer pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figure 1, the present utility model provides a technical solution: a positioning device for a rebound hammer, including a positioning cylinder 1 for positioning the position of the rebound hammer body 3; a mounting seat 2 is slidably installed in the positioning cylinder 1 for installing the rebound hammer body 3; the rebound hammer body 3 is installed on the mounting seat 2; a plurality of strip-shaped through openings 4 are provided and evenly distributed on the side wall of the positioning cylinder 1; a connecting block 5 is located inside the strip-shaped through opening 4 and one end is connected to the mounting seat 2; a connecting ring 6 is slidably installed outside the positioning cylinder 1, and the other ends of a plurality of connecting blocks 5 are all connected to the inner wall of the connecting ring 6; the connecting ring 6, the connecting block 5 and the mounting seat 2 are made of an integral material, and by driving the connecting ring 6, the connecting block 5, the mounting seat 2 and the rebound hammer body 3 can be driven to move for detection. A guide rod 7 is arranged in the strip-shaped through opening 4 and penetrates through the connecting block 5. By setting the guide rod 7, the stability of the movement of the connecting block 5 is effectively ensured; a spring 8 is arranged outside the guide rod 7 and is located between the inner wall of the strip-shaped through opening 4 near the opening end of the positioning cylinder 1 and the connecting block 5. When the connecting block 5 moves to compress the spring 8, the elastic force of the spring 8 can be used to apply a pressure to the positioning cylinder 1. By driving the connecting ring 6, the connecting block 5, the mounting seat 2 and the rebound hammer body 3 to move for detection, and at the same time, the spring 8 is compressed during the movement of the connecting block 5. The elastic force of the spring 8 applies a force to the positioning cylinder 1 towards the concrete detection surface to ensure the stability of the perpendicularity of the positioning cylinder 1 in contact with the concrete. When the impact rod of the rebound hammer contacts the concrete multiple times, it is not necessary to rely on the experience of the tester to maintain perpendicularity, avoiding affecting the accuracy of the detection result.

[0023] Specifically, a plurality of support angle plates 9 are provided on the side wall of the positioning cylinder 1 near the opening end. The contact end of the support angle plate 9 is set as a rough surface. By setting the support angle plates 9 to support the positioning cylinder 1, the stability of the perpendicularity of the positioning cylinder 1 in contact with the concrete is increased. By setting the contact end of the support angle plate 9 as a rough surface, the friction between the positioning cylinder 1 and the concrete surface is increased, avoiding the position deviation of the positioning cylinder 1 during use.

[0024] Specifically, a buffer pad 10 is provided on the inner wall of the strip-shaped through opening 4 far from the opening end of the positioning cylinder 1 and outside the guide rod 7. During the rebound of the spring 8, the connecting block 5 and the positioning cylinder 1 are driven to move relatively, so that the connecting block 5 slides relative to the strip-shaped through opening 4 and abuts against the buffer pad 10 for buffering, realizing the buffering of the mounting seat 2 and the rebound hammer body 3.

[0025] Specifically, a gap is provided between the rebound hammer body 3 and the bottom of the positioning cylinder 1. By setting the gap, it effectively prevents the collision between the rebound hammer body 3 and the positioning cylinder 1 during use, avoiding the problem of damage to the rebound hammer body 3.

[0026] Specifically, a handheld part is provided on the connecting ring 6, and the handheld parts are oppositely arranged on both sides of the connecting ring 6, which facilitates the operator to hold the handheld parts for operation.

[0027] Working principle: During the use of the present invention, first, the positioning cylinder 1 is aligned with the position of the concrete to be detected. Then, the handheld parts on the connecting ring 6 are pushed, so that the connecting ring 6 drives the connecting block 5, the mounting seat 2 and the rebound instrument body 3 to move for detection. At the same time, during the movement of the connecting block 5, the spring 8 is compressed, and the elastic force of the spring 8 exerts pressure on the positioning cylinder 1, ensuring the stability of the perpendicularity of the positioning cylinder 1 in contact with the concrete.

[0028] In the description of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description of the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for a rebound tester, characterized in that: include: Positioning cylinder (1); A mounting seat (2) is slidably mounted in the positioning cylinder (1); The rebound tester body (3) is mounted on the mounting seat (2); A plurality of strip-shaped openings (4) are provided and evenly distributed on the side wall of the positioning cylinder (1); A connecting block (5), located inside the strip-shaped opening (4), and having one end connected to the mounting seat (2); A connecting ring (6) is slidably mounted on the outer side of the positioning cylinder (1), and the other ends of the plurality of connecting blocks (5) are connected to the inner wall of the connecting ring (6); A guide rod (7) is arranged in the strip-shaped opening (4) and penetrates the connecting block (5); The spring (8) is arranged on the outside of the guide rod (7) and is located between the inner wall of the strip-shaped opening (4) close to the opening end of the positioning tube (1) and the connecting block (5).

2. A positioning device for a rebound tester according to claim 1, characterized in that: A plurality of supporting angle plates (9) are provided on the side wall of the positioning tube (1) close to the opening end, and the contact ends of the supporting angle plates (9) are arranged as rough surfaces.

3. A positioning device for a rebound tester according to claim 1, characterized in that: A buffer pad (10) is provided on the inner wall of the strip-shaped through opening (4) away from the opening end of the positioning tube (1) and located on the outer side of the guide rod (7).

4. A positioning device for a rebound hammer according to claim 1, characterized in that: A gap is provided between the rebound tester body (3) and the bottom of the positioning cylinder (1).

5. The positioning device for a rebound hammer according to claim 1, characterized in that: The connecting ring (6) is provided with a hand-holding portion.

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