Concrete strength detection device
By designing a traction release and protection mechanism for the concrete strength testing device, the problems of gravel splashing and kinetic energy measurement were solved, improving safety and data accuracy, and providing a comprehensive assessment of concrete strength.
Patent Information
- Application Number
- CN202422628296.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing concrete strength testing devices are prone to causing gravel to fly during the pressurization process, endangering the safety of testing personnel, and at the same time, it is difficult to accurately measure the kinetic energy value.
A concrete strength testing device was designed, employing a traction release mechanism and a testing and protection mechanism. The impact head is lifted to different heights using nylon ropes and lightweight balls, and the kinetic energy is calculated using a pressure measuring instrument. The testing box and protective cover prevent the flying of gravel, providing comprehensive data support.
It achieves improved safety and accurate measurement of kinetic energy data, provides a more intuitive assessment of concrete strength, reduces the harm of flying debris to test personnel, and ensures the accuracy of test data.
Smart Images
Figure CN223513066U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of concrete strength testing technology, specifically a concrete strength testing device. Background Technology
[0002] Concrete is an engineering composite material in which aggregates are bound together by cementing materials. Cement is used as the cementing material, sand and stone are used as aggregates, and water (which may contain admixtures and additives) is mixed in a certain proportion to obtain cement concrete, which can be made into various shapes.
[0003] When testing the strength of concrete blocks, the concrete blocks are often placed on a testing device and pressurized by hydraulic equipment to observe the damage under different pressure conditions. During this process, fragments may fly, which can easily cause harm to the surrounding test personnel. Furthermore, it is difficult to know the specific kinetic energy value acting on the concrete blocks by directly pressurizing them with hydraulic equipment. Utility Model Content
[0004] In view of this, the purpose of this utility model is to address the shortcomings of the prior art by proposing a concrete strength testing device to solve the problems existing in the prior art.
[0005] To achieve the above objectives, this utility model provides a concrete strength testing device, including a device frame. A smooth rod is fixedly connected to the inner side of the device frame, and a drop frame is slidably connected to the outer surface of the smooth rod. An impact head is provided at the bottom of the drop frame. A traction release mechanism for lifting the drop frame is provided on the device frame. A pressure measuring instrument is fixedly installed at the bottom inner side of the device frame. A numerical dial is provided on the pressure measuring instrument. A detection protection mechanism is provided at the top of the pressure measuring instrument. A scale is provided on the device frame.
[0006] Preferably, the traction release mechanism includes a nylon rope mounted on the drop frame, with a lightweight ball at the end of the nylon rope away from the drop frame. The traction release mechanism can lift the drop frame, thereby lifting the impact head to different positions.
[0007] Preferably, the device frame has a first guide wheel and a second guide wheel arranged sequentially from top to bottom, and a guide reel is fixedly connected to the outer surface of the device frame, with a guide hole provided on the guide reel.
[0008] Preferably, the detection and protection mechanism includes a detection box fixedly installed on the top of the pressure measuring instrument. The outer surface of the detection box is provided with a hinge, and the outer surface of the hinge is provided with a protective cover. The detection and protection mechanism allows concrete blocks to be placed inside the detection box, and the impact head impacts the concrete blocks to test their strength.
[0009] Preferably, a bottom shaft is fixedly connected to the outer surface of the detection box, and an electric push rod is rotatably connected to the outer surface of the bottom shaft.
[0010] Preferably, a guide shaft is fixedly connected to the outer surface of the protective cover, and the outer surface of the guide shaft is rotatably connected to the output end of the electric actuator.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. This concrete strength testing device can lift the drop frame and impact head to different heights and drop them through a traction release mechanism. The kinetic energy data at different heights is calculated using the formula Ek=mgh. Combined with the specific values on the numerical dial of the pressure measuring instrument, the testers can directly observe and record the damage of concrete blocks under different kinetic energy impacts. This provides more intuitive and comprehensive data support for evaluating the performance of concrete blocks and helps to understand the strength characteristics of concrete blocks more accurately.
[0013] 2. The concrete strength testing device, with its combination of testing box and protective cover, forms a relatively complete open box, effectively shielding the concrete blocks from flying debris during the compression process, thus greatly reducing the safety threat to the testing personnel and protecting their safety. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this application;
[0015] Figure 2 This is a schematic diagram of the structure of the device frame in this application;
[0016] Figure 3 This is a schematic diagram of the surface structure of the test chamber in this application.
[0017] The components include: 1. Frame; 2. Smooth rod; 3. Drop frame; 4. Impact head; 5. Nylon rope; 6. Lightweight ball; 7. First guide wheel; 8. Second guide wheel; 9. Guide reel; 10. Guide hole; 11. Pressure measuring instrument; 12. Numerical dial; 13. Detection box; 14. Hinge; 15. Protective cover; 16. Bottom shaft; 17. Electric actuator; 18. Guide shaft; 19. Scale. Detailed Implementation
[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0019] Please see Figure 1-3 A concrete strength testing device includes a frame 1, a smooth rod 2 fixedly connected to the inner side of the frame 1, a drop frame 3 slidably connected to the outer surface of the smooth rod 2, an impact head 4 at the bottom of the drop frame 3, a traction release mechanism for lifting the drop frame 3 on the frame 1, a pressure measuring instrument 11 fixedly installed at the bottom inner side of the frame 1, a numerical dial 12 on the pressure measuring instrument 11, a detection protection mechanism on the top of the pressure measuring instrument 11, and a scale 19 on the frame 1.
[0020] With the above technical solution, when the device tests the strength of concrete blocks, the blocks need to be placed in the test box 13, and the protective cover 15 is locked in the appropriate position by the electric push rod 17. At this time, the test box 13 and the protective cover 15 should form a relatively complete box (the box is uncovered). At the same time, the drop frame 3 is lifted to the corresponding height and dropped by the traction mechanism, and the impact head 4 directly impacts the concrete blocks to test their strength (it should be noted that when the impact head 4 contacts the concrete blocks, the drop frame 3 will not contact the top of the test box 13).
[0021] Specifically, the traction release mechanism includes a nylon rope 5 mounted on the drop frame 3, with a lightweight ball 6 attached to the end of the nylon rope 5 furthest from the drop frame 3.
[0022] Through the above technical solution, the nylon rope 5 is lightweight and has high rigidity, making it less prone to breakage, while the lightweight ball 6 is made of foam plastic. The lightweight design of the nylon rope 5 and the lightweight ball 6 is to reduce the impact of weight on the obtained kinetic energy data.
[0023] Specifically, the device frame 1 has a first guide wheel 7 and a second guide wheel 8 arranged sequentially from top to bottom. A guide wheel 9 is fixedly connected to the outer surface of the device frame 1, and a guide hole 10 is provided on the guide wheel 9.
[0024] With the above technical solution, the first guide wheel 7 is located in the inner part of the device frame 1, while the second guide wheel 8 is located in the outer part of the device frame 1. Both sets of guide wheels can rotate smoothly. The nylon rope 5 passes through the guide hole 10, but the lightweight ball 6 cannot pass through, which serves as a limiting function.
[0025] Specifically, the detection and protection mechanism includes a detection box 13 fixedly installed on the top of the pressure measuring instrument 11, a hinge 14 on the outer surface of the detection box 13, and a protective cover 15 on the outer surface of the hinge 14.
[0026] Through the above technical solution, the protective cover 15 can be rotated along the hinge 14 to adjust its position, and the protective cover 15 can be opened evenly before the concrete block is put into the testing box 13 or after the hardness test is completed.
[0027] Specifically, a bottom shaft 16 is fixedly connected to the outer surface of the testing box 13, and an electric push rod 17 is rotatably connected to the outer surface of the bottom shaft 16.
[0028] The bottom shaft 16 is designed to accommodate the deflection of the electric actuator 17 during the opening process, thanks to the above technical solution.
[0029] Specifically, a guide shaft 18 is fixedly connected to the outer surface of the protective cover 15, and the outer surface of the guide shaft 18 is rotatably connected to the output end of the electric push rod 17.
[0030] Through the above technical solution, during the process of pushing and pulling the guide shaft 18, the output end of the electric push rod 17 will rotate along the guide shaft 18 and drive the protective cover 15 through the guide shaft 18, so that it swings under the action of the hinge 14. The protective cover 15 can cover the test box 13 to block the gravel generated during the test, while the protective cover 15 can be opened to facilitate the placement of concrete stones into or out of the test box 13.
[0031] Working principle: When testing the strength of concrete blocks, the device first holds the lightweight ball 6 and pulls the drop frame 3 using the nylon rope 5. As the drop frame 3 slides upward along the smooth rod 2, it drives the impact head 4 to move upward synchronously. During this process, as the nylon rope 5 suspends the drop frame 3 upward, it passes through the first guide wheel 7 and the second guide wheel 8 in sequence. Under the guiding action of the two sets of guide wheels, the impact head 4 is lifted to the corresponding position (during this process, the height of the impact head 4 can be directly read from the value on the scale 19). After adjusting the position of the impact head 4, the concrete block can be placed inside the detection box 13. As the electric actuator 17 pulls the guide shaft 18, the output end of the electric actuator 17 will rotate along the guide shaft 18, driving the protective cover 15 through the guide shaft 18. This causes the cover to close with the detection box 13 under the action of the hinge 14 (at this time, the detection box 13 and the protective cover 15 should together form a relatively complete open box). Finally, release the lightweight ball 6. At this time, the impact head 4, along with the drop frame 3, will quickly... The concrete block is dropped and ultimately impacted directly by the impact head 4, thus completing the entire hardness test process. During this process, the debris generated on the concrete block is blocked by the test box 13 and the protective cover 15, which effectively protects the test personnel and reduces the harm to them. At the same time, the pressure change can be read from the numerical dial 12 of the pressure measuring instrument 11, thereby obtaining the pressure value under impact at different heights. The specific kinetic energy data Ek at different heights can be calculated by the formula: Ek=mgh, where m is the mass of the drop frame 3 and the impact head 4, g is the acceleration due to gravity (approximately 9.8 m / s2), and h is the drop height (which can be read directly from the scale 19). Ignoring the gravity of the nylon rope 5 and the lightweight ball 6, as well as the resulting sliding friction, it is easy to obtain the kinetic energy data of the concrete block at different heights and observe the damage to the concrete block under the corresponding kinetic energy impact. This helps to more accurately evaluate the performance of the concrete block and provides valuable data support for subsequent research.
[0032] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A concrete strength testing device, comprising a device frame (1), characterized in that: A smooth rod (2) is fixedly connected to the inner side of the device frame (1), and a drop frame (3) is slidably connected to the outer surface of the smooth rod (2). An impact head (4) is provided at the bottom of the drop frame (3). A traction release mechanism for lifting the drop frame (3) is provided on the device frame (1). A pressure measuring instrument (11) is fixedly installed at the bottom inner side of the device frame (1). A numerical disk (12) is provided on the pressure measuring instrument (11). A detection and protection mechanism is provided at the top of the pressure measuring instrument (11). A scale (19) is provided on the device frame (1).
2. The concrete strength testing device according to claim 1, characterized in that: The traction release mechanism includes a nylon rope (5) mounted on the drop frame (3), with a lightweight ball (6) mounted on one end of the nylon rope (5) away from the drop frame (3).
3. The concrete strength testing device according to claim 1, characterized in that: The device frame (1) has a first guide wheel (7) and a second guide wheel (8) arranged sequentially from top to bottom. A guide disc (9) is fixedly connected to the outer surface of the device frame (1), and a guide hole (10) is provided on the guide disc (9).
4. The concrete strength testing device according to claim 1, characterized in that: The detection and protection mechanism includes a detection box (13) fixedly installed on the top of the pressure measuring instrument (11), and a hinge (14) is provided on the outer surface of the detection box (13), and a protective cover (15) is provided on the outer surface of the hinge (14).
5. A concrete strength testing device according to claim 4, characterized in that: The outer surface of the detection box (13) is fixedly connected to a bottom shaft (16), and the outer surface of the bottom shaft (16) is rotatably connected to an electric push rod (17).
6. The concrete strength testing device according to claim 5, characterized in that: The outer surface of the protective cover (15) is fixedly connected to a guide shaft (18), and the outer surface of the guide shaft (18) is rotatably connected to the output end of the electric push rod (17).