Concrete rebound apparatus

Abstract

The utility model discloses a concrete rebound apparatus, which belongs to the field of concrete rebound apparatuses and comprises a concrete rebound apparatus body, the outer ring of the concrete rebound apparatus body is sleeved with a holding ring, one end of the concrete rebound apparatus body is fixedly connected with a supporting seat, a reciprocating screw rod and a supporting rod are respectively arranged above the supporting seat, and the reciprocating screw rod and the supporting rod are connected with the holding ring. The outer ring of the reciprocating screw rod is sleeved with a connecting block through a thread, the outer ring of the supporting rod is sleeved with a square block, and the outer ring of the concrete rebound apparatus body is slidably connected with a connecting ring. Through cooperative use of the devices, an operator can quickly and accurately adjust the position of the protective round frame according to personal requirements, so that a clamping plate makes contact with an arm to a comfortable position, through arrangement of a long rod, a spring and the clamping plate, the function of adapting to the arm is achieved, the force of the arm can be more conveniently used for pressure measurement, and the working efficiency is improved. Therefore, the pressure of the hand is reduced, and the operation is easier and more stable.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete rebound hammers, specifically a concrete rebound hammer. Background Technology

[0002] A concrete rebound hammer is a non-destructive testing device used to assess the surface hardness of concrete structures and estimate their compressive strength. It works by measuring the distance a spring-driven hammer rebounds from the concrete surface; this rebound distance is directly proportional to the hardness of the concrete surface—the harder the concrete, the farther the hammer will rebound.

[0003] An investigation revealed that a Chinese utility model patent discloses a concrete rebound hammer (publication number: CN220854391U), which includes a rebound hammer body, a straightening mechanism, and a support mechanism. The straightening mechanism is located at the front end of the rebound hammer body housing, and the support mechanism is located at the rear end of the rebound hammer body housing. The straightening mechanism includes a collar, an internal threaded connector (a), a handle, and an internal threaded connector (a). The collar is fitted onto the rebound hammer body housing, and the rebound hammer body housing and the collar are welded together.

[0004] While the aforementioned patent utilizes a centering mechanism to help testers maintain a stable grip on the front end of the rebound hammer, allowing for better control during pressing, and a support mechanism to assist in gripping and supporting the rear end, enabling better force application during pressing, the use of the concrete rebound hammer still requires manual strength to place it on the concrete surface. Due to limited hand strength, this is strenuous and not suitable for prolonged use. Furthermore, when the rebound hammer contacts the concrete surface, slippery hands or accidental slippage can cause it to fall, damaging the equipment, increasing maintenance costs and risks, and delaying and introducing uncertainty into subsequent testing.

[0005] Therefore, this utility model provides a concrete rebound hammer to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This invention provides a concrete rebound hammer, which aims to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a concrete rebound hammer, comprising a concrete rebound hammer body, a gripping ring sleeved on the outer ring of the concrete rebound hammer body, a support base fixedly connected to one end of the concrete rebound hammer body, a reciprocating screw and a support rod respectively arranged above the support base, a connecting block threaded onto the outer ring of the reciprocating screw, a square block sleeved onto the outer ring of the support rod, a connecting ring slidably connected to the outer ring of the concrete rebound hammer body, a protective circular frame fixedly connected to one side of the connecting block, a long rod arranged in the inner cavity of the protective circular frame, a clamping plate fixedly connected to one end of the long rod, and a spring sleeved on the outer ring of the long rod.

[0010] As a preferred technical solution of this application, one end of the support rod is fixedly connected to one side of the adjacent gripping ring, the other end of the support rod is fixedly connected to one side of the adjacent support seat, and U-shaped connecting frames are fixedly connected to both sides of the block, with one end of the U-shaped connecting frame fixedly connected to one side of the adjacent connecting block.

[0011] As a preferred technical solution of this application, one end of the reciprocating lead screw is rotatably connected to one side of an adjacent support seat via a rotating shaft, and the other end of the reciprocating lead screw is fixedly connected to a handle through one side of an adjacent gripping ring.

[0012] As a preferred technical solution of this application, one side of the outer surface of the connecting ring is fixedly connected to one side of the adjacent block, and the other side of the outer surface of the connecting ring is fixedly connected to one side of the adjacent connecting block.

[0013] As a preferred technical solution of this application, one end of the long rod extends through the inner wall of the protective circular frame to the outer surface of the protective circular frame, and a grip handle is provided on the outer surface of the protective circular frame.

[0014] As a preferred technical solution of this application, one end of the grip handle is fixedly connected to the extension end of the long rod, an anti-slip pad is fixedly connected to the inner wall of the clamp, and a soft pad is fixedly connected to one side of the inner surface of the protective circular frame.

[0015] As a preferred technical solution of this application, a contact plate is provided above the gripping ring, and one side of the contact plate is fixedly connected to one side of the adjacent gripping ring through a plurality of connecting plates.

[0016] (III) Beneficial Effects

[0017] The grip ring provides a stable point of contact for the operator, reducing the need for hand strength. The protective frame provides support space for the arm. The reciprocating screw rotates, causing the connecting block to move up and down, allowing the protective frame to be adjusted to a suitable position for the operator. The operator can quickly and accurately adjust the position of the protective frame according to their individual needs, ensuring a comfortable contact between the clamp and the arm. The combination of the long rod, spring, and clamp achieves an adaptability function for the arm, making it easier to use arm strength for pressure measurement, thus reducing hand pressure and making operation easier and more stable.

[0018] The addition of soft pads and anti-slip mats further increases friction between the device and the arm, effectively preventing slippage and avoiding the risk of the concrete rebound hammer falling due to insufficient hand strength or slippery hands. This ensures stability during testing, helps improve the accuracy and reliability of measurement data, enhances ease of use and comfort, and strengthens equipment safety. It also reduces additional risks and delays caused by accidental drops, better meeting the needs for efficient and accurate testing and providing strong support for the quality inspection of building engineering projects. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of a concrete rebound hammer;

[0020] Figure 2 A schematic diagram of the holding ring structure in a concrete rebound hammer;

[0021] Figure 3 A schematic diagram of the protective circular frame in a concrete rebound hammer;

[0022] Figure 4 This is a schematic diagram of the structure of the soft pad in a concrete rebound hammer.

[0023] In the picture:

[0024] 1. Concrete rebound hammer body; 2. Grip ring; 3. Support base; 4. Protective circular frame; 5. Grip handle; 6. Contact plate; 7. Connecting plate; 8. U-shaped connecting frame; 9. Block; 10. Support rod; 11. Reciprocating screw; 12. Handle; 13. Connecting block; 14. Long rod; 15. Spring; 16. Clamping plate; 17. Soft pad; 18. Anti-slip pad; 19. Connecting ring. Detailed Implementation

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

[0026] This utility model provides a concrete rebound hammer, such as Figures 1-4 As shown, the technical solution includes a concrete rebound hammer body 1, a gripping ring 2 sleeved on the outer ring of the concrete rebound hammer body 1, a support base 3 fixedly connected to one end of the concrete rebound hammer body 1, a reciprocating screw 11 and a support rod 10 respectively arranged above the support base 3, a connecting block 13 threadedly sleeved on the outer ring of the reciprocating screw 11, a square block 9 sleeved on the outer ring of the support rod 10, a connecting ring 19 slidably connected to the outer ring of the concrete rebound hammer body 1, a protective circular frame 4 fixedly connected to one side of the connecting block 13, a long rod 14 arranged in the inner cavity of the protective circular frame 4, a clamping plate 16 fixedly connected to one end of the long rod 14, and a spring 15 sleeved on the outer ring of the long rod 14.

[0027] One end of the support rod 10 is fixedly connected to one side of the adjacent gripping ring 2, and the other end of the support rod 10 is fixedly connected to one side of the adjacent support base 3. Both sides of the block 9 are fixedly connected with U-shaped connecting frames 8, and one end of the U-shaped connecting frame 8 is fixedly connected to one side of the adjacent connecting block 13.

[0028] One end of the reciprocating lead screw 11 is rotatably connected to one side of the adjacent support seat 3 via a rotating shaft, and the other end of the reciprocating lead screw 11 is fixedly connected to one side of the adjacent gripping ring 2 with a handle 12.

[0029] One side of the outer surface of the connecting ring 19 is fixedly connected to one side of the adjacent block 9, and the other side of the outer surface of the connecting ring 19 is fixedly connected to one side of the adjacent connecting block 13.

[0030] One end of the long rod 14 extends through the inner wall of the protective circular frame 4 to the outer surface of the protective circular frame 4, and a handle 5 is provided on the outer surface of the protective circular frame 4.

[0031] One end of the handle 5 is fixedly connected to the extension end of the long rod 14, an anti-slip pad 18 is fixedly connected to the inner wall of the clamp 16, and a soft pad 17 is fixedly connected to one side of the inner surface of the protective round frame 4.

[0032] A contact plate 6 is provided above the gripping ring 2, and one side of the contact plate 6 is fixedly connected to one side of the adjacent gripping ring 2 through several connecting plates 7.

[0033] Specifically: The operator grips and rotates the handle 12. The rotation of the handle 12 drives the reciprocating screw 11 to rotate. During this process, the thread on the reciprocating screw 11 interacts with the connecting block 13, causing the connecting block 13 to move up and down along the reciprocating screw 11, thereby driving the protective frame 4 to adjust its height accordingly to achieve the optimal operating position. After the protective frame 4 is adjusted to the appropriate position, the operator grips the handle 5 and pulls the long rod 14 to adjust the position of the clamp 16. This action compresses the spring 15, causing deformation. The operator then inserts their arm through the inner cavity of the protective frame 4, ensuring that their arm... Comfortably placed inside, after the operator releases the grip handle 5, the clamp 16 will move inward due to the elastic restoring force of the spring 15, and the anti-slip pad 18 on its inner wall will fit tightly against the operator's arm. Then, the operator holds the grip ring 2 and needs to place the concrete rebound hammer body 1 vertically on the concrete surface to be tested and keep it stable. Through the setting of the contact plate 6, the contact plate 6 contacts the concrete surface, making the concrete rebound hammer body 1 more stable during measurement. Then, gently press the trigger to release the hammer, let it impact the concrete surface, and carefully record the distance the hammer bounces back.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A concrete rebound hammer, comprising a concrete rebound hammer body (1), characterized in that: The concrete rebound hammer body (1) is fitted with a gripping ring (2) on its outer ring. One end of the concrete rebound hammer body (1) is fixedly connected to a support base (3). A reciprocating screw (11) and a support rod (10) are respectively arranged above the support base (3). The outer ring of the reciprocating screw (11) is fitted with a connecting block (13) through a thread. The outer ring of the support rod (10) is fitted with a block (9). The outer ring of the concrete rebound hammer body (1) is slidably connected to a connecting ring (19). A protective circular frame (4) is fixedly connected to one side of the connecting block (13). A long rod (14) is provided in the inner cavity of the protective circular frame (4). One end of the long rod (14) is fixedly connected to a clamping plate (16). A spring (15) is fitted on the outer ring of the long rod (14).

2. A concrete rebound hammer according to claim 1, characterized in that: One end of the support rod (10) is fixedly connected to one side of the adjacent gripping ring (2), and the other end of the support rod (10) is fixedly connected to one side of the adjacent support base (3). Both sides of the block (9) are fixedly connected to U-shaped connecting frames (8), and one end of the U-shaped connecting frame (8) is fixedly connected to one side of the adjacent connecting block (13).

3. A concrete rebound hammer according to claim 1, characterized in that: One end of the reciprocating screw (11) is rotatably connected to one side of the adjacent support base (3) via a rotating shaft, and the other end of the reciprocating screw (11) is fixedly connected to a handle (12) through one side of the adjacent gripping ring (2).

4. A concrete rebound hammer according to claim 1, characterized in that: One side of the outer surface of the connecting ring (19) is fixedly connected to one side of the adjacent block (9), and the other side of the outer surface of the connecting ring (19) is fixedly connected to one side of the adjacent connecting block (13).

5. A concrete rebound hammer according to claim 1, characterized in that: One end of the long rod (14) extends through the inner wall of the protective circular frame (4) to the outer surface of the protective circular frame (4), and a grip handle (5) is provided on the outer surface of the protective circular frame (4).

6. A concrete rebound hammer according to claim 5, characterized in that: One end of the grip handle (5) is fixedly connected to the extension end of the long rod (14), an anti-slip pad (18) is fixedly connected to the inner wall of the clamp (16), and a soft pad (17) is fixedly connected to one side of the inner surface of the protective round frame (4).

7. A concrete rebound hammer according to claim 1, characterized in that: A contact plate (6) is provided above the gripping ring (2), and one side of the contact plate (6) is fixedly connected to one side of the adjacent gripping ring (2) through several connecting plates (7).

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