一种水下检测混凝土强度回弹装置
By incorporating a retractable airbag and a waterproof sealing structure into the rebound hammer, and utilizing the pressure difference to prevent water infiltration, the problem of inaccurate test results in underwater rebound hammers is solved, thus achieving greater accuracy in underwater testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUZHOU UNIV
- Filing Date
- 2025-04-29
- Publication Date
- 2026-07-17
AI Technical Summary
In an underwater environment, water ingress into the rebound hammer reduces the impact energy of the hammer, resulting in inaccurate rebound values and compromising the validity of the test results.
By incorporating a retractable airbag and a waterproof sealing structure inside the rebound hammer, the air pressure is greater than the external water pressure, preventing water from seeping into the device and ensuring the accuracy of the test results.
In an underwater environment, the effectiveness and accuracy of the rebound hammer test results are ensured, and the influence of water resistance on the hammer impact energy is avoided.
Smart Images
Figure CN224518312U_ABST
Abstract
Claims
1. An underwater concrete strength rebound device, comprising: It includes a rebound device and a retractable airbag mounted on the rebound device. One end of the retractable airbag is connected to the end of the rebound device's impact rod, and the other end is connected to the rebound device body. One end of the small section of the retractable airbag is connected to the impact rod via a retractable sleeve, and one end of the large section of the retractable airbag is connected to the rebound device body on the side away from the impact rod via a waterproof sealing tube. The rebound hammer body is provided with a waterproof sealing strip on the side away from the impact rod. The retractable airbag, waterproof sealing tube, and waterproof sealing strip are connected, and the connected space formed by the three is sealed. The retractable airbag has an air outlet on the side near the impact rod, and the waterproof sealing strip has an air inlet.
2. A rebound device for detecting the strength of concrete underwater according to claim 1, characterized in that, The air inlet is connected to an external inflation device via an air pipe, which is used to continuously inflate the retractable airbag through the air inlet and expel the air through the air outlet.
3. The device according to claim 1, wherein The retractable airbag uses a multi-layer corrugated silicone rubber structure.
4. A rebound device for detecting the strength of concrete underwater according to claim 3, characterized in that, The axial extension stroke of the multi-layer corrugated silicone rubber structure is 80-160mm, the compression rebound rate is ≥95%, and the thickness is 2-4mm.
5. The underwater concrete strength detection and rebound device of claim 1, wherein, The retractable sleeve is made of stainless steel with a diameter of 25-30mm.
6. The underwater concrete strength detection and rebound device of claim 1, wherein, The waterproof sealing pipe is made of stainless steel with a diameter of 65-70mm.