A seismic assessment device for buildings

Abstract

This utility model relates to the field of building engineering testing instruments, specifically a seismic assessment device for buildings, including a rebound hammer body. A striking rod is mounted on the rebound hammer body, and a striking head is engaged at the end of the striking rod. A fixing structure is provided on the striking rod, comprising a locking block and a retaining sleeve. Four locking blocks are slidably connected to the striking rod, and the retaining sleeve is slidably connected to the striking rod. One end of each locking block engages with the striking head, and the other end of each locking block abuts against the retaining sleeve. A connecting ring is fixedly connected to the striking rod, and a spring abuts against the retaining sleeve. When the striking head is damaged, it can be quickly and individually replaced, saving operating costs and improving the convenience of replacement operations.

Description

Technical Field

[0001] This utility model relates to a seismic assessment device for buildings, specifically a seismic assessment device for buildings, belonging to the technical field of building engineering testing instruments. Background Technology

[0002] Concrete strength is a key factor in assessing a building's seismic performance. If the concrete strength fails to meet design requirements, the load-bearing and deformation capacity of structural components under seismic loads will be affected. For example, beams and columns with insufficient strength are more prone to cracking and damage during earthquakes, reducing the overall seismic resistance of the building. Therefore, testing concrete strength using a rebound hammer can determine whether components meet the basic requirements of seismic design and assist in assessing the building's seismic performance. The rebound hammer calculates strength by using the rebound energy after striking the concrete surface with a spring-loaded rod.

[0003] However, with each impact, the tip of the impact rod (usually a steel spherical surface) comes into high-frequency, low-energy impact contact with the concrete surface. The coarse aggregates (such as crushed stone and pebbles) and hardened cement paste in the concrete have a certain hardness. Long-term impact will cause the metal material on the surface of the impact rod tip to gradually peel off or deform, forming wear dents or scratches. In addition, alkaline substances (such as calcium hydroxide) in the concrete pores may have a weak chemical reaction with the metal surface of the impact rod. Long-term contact may lead to surface oxidation or corrosion, accelerating wear. Traditional impact rods are a single piece, so when the head is damaged, the whole thing needs to be replaced. When replacing it, the rebound hammer also needs to be disassembled, which is not only time-consuming and labor-intensive, but also increases the cost of use. Utility Model Content

[0004] The purpose of this utility model is to provide a building seismic assessment device to solve the above problems. The end of the impact rod is detachably equipped with an impact head, which can be quickly disassembled from the impact rod. When the impact head is damaged, it can be quickly replaced separately, saving the cost of use and improving the convenience of replacement operation.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a seismic assessment device for buildings, comprising a rebound hammer body, an impact rod mounted on the rebound hammer body, an impact head engaged at the end of the impact rod, a fixing structure on the impact rod, the fixing structure comprising a locking block and a retaining sleeve, four locking blocks slidably connected to the impact rod, and a retaining sleeve slidably connected to the impact rod, one end of the locking block engaging with the impact head, the other end of the locking block abutting against the retaining sleeve, a connecting ring fixedly connected to the impact rod, and a spring abutting against the retaining sleeve.

[0006] Preferably, a shielding sleeve is fixedly connected to the abutment, and a protruding ring is fixedly connected to the outer side of the shielding sleeve.

[0007] Preferably, the vertical cross-section of the end of the card block has an arc-shaped structure, and the four card blocks are arranged in a circumferential array about the center of the projectile head.

[0008] Preferably, the vertical cross-section of one end of the projectile head is trapezoidal, the horizontal cross-section of one end of the projectile head is square, and the inner side of the abutment near the vertical cross-section of one end of the projectile head is trapezoidal.

[0009] Preferably, the projectile head is provided with two grooves, and the two grooves are symmetrically distributed about the middle of the projectile head.

[0010] Preferably, the rebound spring is equipped with a controller, and the controller has a display screen.

[0011] Preferably, two handles are fixedly connected to the rebounder body, and the handles are perpendicular to the rebounder body.

[0012] Preferably, the two grips are fixedly connected to the same grip bar, and the grips are covered with shock-absorbing sleeves.

[0013] The beneficial effects of this utility model are as follows: When the striking head wears out during use, the spring can be compressed by pushing the abutment. As the abutment moves, it will no longer block the four locking blocks, and then the striking head can be pulled. Since the part where the locking blocks engage with the striking head has an arc-shaped structure, and the abutment does not block the locking blocks at this time, the striking head will slide against the locking blocks on the striking rod during the movement, continuously pulling the striking head until it disengages from the striking rod, thus achieving quick disassembly of the striking head. Therefore, when the striking head is damaged, it can be quickly replaced individually, avoiding the need to replace the entire head, improving the convenience of replacement operations and saving on usage costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the card block and the abutment of this utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure between the locking block and the impact head of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the impact head and the groove of this utility model.

[0018] In the diagram: 1. Rebound device body; 2. Impact rod; 3. Impact head; 4. Fixing structure; 401. Locking block; 402. Abutment sleeve; 403. Spring; 404. Connecting ring; 405. Covering sleeve; 406. Protruding ring; 5. Controller; 6. Display screen; 7. Grip; 8. Shock-absorbing sleeve; 9. Grip bar; 10. Groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 As shown, a seismic assessment device for buildings includes a rebound hammer body 1, on which an impact rod 2 is mounted. An impact head 3 is engaged at the end of the impact rod 2. A fixing structure 4 is provided on the impact rod 2. The fixing structure 4 includes a locking block 401 and a retaining sleeve 402. Four locking blocks 401 are slidably connected to the impact rod 2, and the retaining sleeve 402 is slidably connected to the impact rod 2. One end of the locking block 401 engages with the impact head 3, and the other end of the locking block 401 abuts against the retaining sleeve 402. A connecting ring 404 is fixedly connected to the impact rod 2, and a spring 403 abuts against the retaining sleeve 402.

[0021] As a technical optimization of this utility model, a shielding sleeve 405 is fixedly connected to the abutment sleeve 402, so that the spring 403 can be shielded and protected by the shielding sleeve 405, preventing mud and sand from entering the gap of the spring 403 and causing blockage. A protruding ring 406 is fixedly connected to the outer side of the shielding sleeve 405, so that the hand can be prevented from slipping on the shielding sleeve 405 when pushing the shielding sleeve 405.

[0022] As a technical optimization of this utility model, the vertical cross-section of the end of the locking block 401 is an arc-shaped structure, so it can automatically abut against the locking block 401 and slide on the firing rod 2 during the movement of the firing head 3. The four locking blocks 401 are arranged in a circumferential array about the middle of the firing head 3. By locking the four locking blocks 401 with the firing head 3 at the same time, the firmness of the connection between the firing head 3 and the firing rod 2 can be improved.

[0023] As a technical optimization of this utility model, the vertical cross-section of one end of the impact head 3 is trapezoidal, so when the impact head 3 is installed and engaged with the impact rod 2, it can play a guiding role in motion. The horizontal cross-section of one end of the impact head 3 is square, and the inner side of the abutment 402 near the vertical cross-section of one end of the impact head 3 is trapezoidal. Therefore, when the abutment 402 moves toward the locking block 401, it can automatically abut against multiple locking blocks 401 moving toward the impact head 3 and engaging with the impact head 3.

[0024] As a technical optimization of this utility model, the bullet head 3 is provided with two grooves 10, so that the hand and the bullet head 3 can be prevented from slipping when the bullet head 3 is pulled. The two grooves 10 are symmetrically distributed about the middle of the bullet head 3.

[0025] As a technical optimization of this utility model, the rebound meter body 1 is equipped with a controller 5, so the detected data can be stored through the controller 5. The controller 5 is equipped with a display screen 6, so the detected data can be displayed through the display screen 6.

[0026] As a technical optimization of this utility model, two handles 7 are fixedly connected to the rebound meter body 1. Therefore, it is more comfortable to hold the smaller handles 7 during the testing process. The handles 7 are perpendicular to the rebound meter body 1.

[0027] As a technical optimization of this utility model, the two grips 7 are fixedly connected to the same grip rod 9, so the grip rod 9 can be held when moving the rebound device body 1. The grip 7 is covered with a shock-absorbing sleeve 8, so the shock-absorbing sleeve 8 can play a shock-absorbing role for the hand, avoiding the palm from being subjected to large vibrations and discomfort, and effectively improving the comfort of use.

[0028] In use, this invention allows for comfortable gripping of the two handles 7 by both hands during testing. The small size of the handles 7 enhances the grip experience. Impacts and vibrations occur during testing; the shock-absorbing sleeve 8 absorbs these vibrations, preventing hand discomfort and improving overall comfort. The controller 5 stores the test data, and the display screen 6 shows the measured data. The rebound spring unit 1 can be easily carried by gripping the handle 9. When the impact head 3 wears down, it pushes the convex ring 406, which in turn moves the blocking sleeve 405. The movement of the shield 405 drives the movement of the abutment 402, and the spring 403 contracts. As the abutment 402 moves, it will no longer block the four locking blocks 401, and then the striking head 3 can be pulled. Since the part where the locking block 401 engages with the striking head 3 has an arc-shaped structure, and the abutment 402 does not block the locking block 401 at this time, the striking head 3 will slide against the locking block 401 on the striking rod 2 during the movement, continuously pulling the striking head 3 until it disengages from the striking rod 2, thus realizing the quick disassembly of the striking head 3. Therefore, when the striking head 3 is damaged, it can be quickly replaced individually, avoiding the need to replace the whole head, improving the convenience of replacement operation and saving the cost of use.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A seismic assessment device for buildings, comprising a rebound hammer body (1), characterized in that: The rebound device body (1) is equipped with a rebound rod (2), and the end of the rebound rod (2) is engaged with a rebound head (3). The rebound rod (2) is provided with a fixing structure (4), which includes a locking block (401) and a stop sleeve (402). Four locking blocks (401) are slidably connected to the rebound rod (2), and a stop sleeve (402) is slidably connected to the rebound rod (2). One end of the locking block (401) engages with the rebound head (3), and the other end of the locking block (401) abuts against the stop sleeve (402). A connecting ring (404) is fixedly connected to the rebound rod (2), and a spring (403) abuts against the stop sleeve (402).

2. The seismic assessment device for buildings according to claim 1, characterized in that: A shielding sleeve (405) is fixedly connected to the abutment sleeve (402), and a protruding ring (406) is fixedly connected to the outer side of the shielding sleeve (405).

3. The seismic assessment device for buildings according to claim 1, characterized in that: The vertical cross-section of the end of the card block (401) is an arc-shaped structure, and the four card blocks (401) are arranged in a circular array about the middle of the bullet head (3).

4. The seismic assessment device for buildings according to claim 1, characterized in that: The vertical cross-section of one end of the impact head (3) is trapezoidal, the horizontal cross-section of one end of the impact head (3) is square, and the inner side of the sleeve (402) near the vertical cross-section of one end of the impact head (3) is trapezoidal.

5. The seismic assessment device for buildings according to claim 1, characterized in that: The projectile head (3) is provided with two grooves (10), and the two grooves (10) are symmetrically distributed about the middle of the projectile head (3).

6. The seismic assessment device for buildings according to claim 1, characterized in that: The rebounder body (1) is equipped with a controller (5), and the controller (5) is equipped with a display screen (6).

7. The seismic assessment device for buildings according to claim 1, characterized in that: Two handles (7) are fixedly connected to the rebounder body (1), and the handles (7) are perpendicular to the rebounder body (1).

8. A seismic assessment device for buildings according to claim 7, characterized in that: The two grips (7) are fixedly connected to the same grip bar (9), and the grips (7) are covered with shock-absorbing sleeves (8).

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