Concrete fracture performance testing device
By using hydraulic cylinder-driven pressure hammer and tensile spring fixing block in the concrete fracture test device, combined with buffer pads and locks, the fixing instability and displacement problems in the prior art are solved, and safe and accurate concrete testing is achieved .
Patent Information
- Application Number
- CN202420791730.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The existing concrete fracture testing devices lack buffering function when fixing concrete blocks, resulting in poor stability of fixing, which can easily lead to splashing and front and back displacement of concrete blocks, affecting the detection results.
A concrete fracture performance test device including a base, protective shell, pressure device and fixing device was designed. The structure of hydraulic cylinder driving pressure hammer and tensile spring fixing block is adopted, combined with buffer pads and locks to ensure the stable fixation of concrete blocks and Safety testing.
Effectively prevent concrete from hurting people when it collapses, limit the range of concrete movement, avoid displacement affecting the test results, and prevent unrelated personnel from operating the equipment through locks.
Smart Images
Figure CN222258937U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete fracture testing, in particular to a concrete fracture performance testing device. Background Art
[0002] Concrete is a composite material mixed with cement, sand, gravel and other materials. It is characterized by high compressive strength and durability after curing. Therefore, it is widely used in construction projects, such as buildings, bridges, roads, etc. The performance of concrete is crucial to the safety and reliability of building structures, so various tests and evaluations are required. People usually use fracture performance testing devices for testing. Through the fracture performance testing device, important parameters such as the crack propagation behavior, fracture morphology and bearing capacity of concrete under different loads can be obtained, providing a scientific basis for the design and use of concrete structures. This test device can also be used to evaluate the rationality of concrete mix ratio, material quality control, and the research and development and application of new concrete materials. Therefore, the fracture performance testing device is of great significance in the field of concrete engineering and plays a vital role in improving the safety, durability and economy of concrete structures.
[0003] The utility model patent with announcement number CN220542633U discloses a concrete fracture test device, including an installation box, a placement box is arranged inside the installation box, a mounting plate is fixedly installed inside the installation box, a fixing mechanism is arranged on the top of the installation plate, two mounting seats are fixedly installed on the top of the installation box, two screws are movably installed inside the two mounting seats, a driving box is arranged on the top of the two screws, and a moving box is sleeved on the outer surface of the two screws. The concrete fracture test device has a more outstanding fixing effect by setting a fixing mechanism, and can also buffer the vibration of the concrete block when monitoring it, increase the stability of the detection, and avoid splashing of the concrete block due to excessive pressure on the concrete, which causes safety hazards. When using the existing test devices, most of them are fixed by rigid clamping, lacking the buffering function, resulting in poor fixing stability and extremely inconvenient use.
[0004] However, the patented mobile box and mobile plate may collide during testing, and lowering the height of the mobile plate may lead to a decrease in protective performance, and the patented fixing device cannot effectively prevent the concrete block from shifting forward and backward. During testing, the concrete block may shift forward and backward, affecting the test results. Utility Model Content
[0005] The purpose of the utility model is to provide a concrete fracture performance testing device to address the deficiencies of the prior art, which can prevent concrete blocks from breaking and injuring people, and can also effectively fix concrete blocks to prevent them from moving.
[0006] The technical solution adopted by the utility model is a concrete fracture performance testing device, comprising a base, a pressure sensor is fixedly installed in the middle of the base, a protective shell is fixedly installed on the top of the base, a protective door is rotatably connected to one side of the protective shell through a hinge, an observation window is opened on the surface of the protective door, a pressure device is arranged in the protective shell, and a fixing device is arranged below the pressure device.
[0007] Preferably, the pressure device includes a support plate, both ends of the support plate are fixedly connected to the inner wall of the protective shell, both ends of the support plate are provided with reinforcement blocks integrally formed with the support plate, one end of the reinforcement block is fixedly connected to the inner wall of the protective shell, a hydraulic cylinder is fixedly installed on the top of the support plate, one side of the hydraulic cylinder is provided with a telescopic end integrally formed with the hydraulic cylinder, and the telescopic end passes through the support plate and is fixedly connected to a pressure hammer.
[0008] Preferably, the fixing device includes a fixing plate, a plurality of sliding grooves are provided on the surface of the fixing plate, and fixing blocks are slidably installed in the sliding grooves. A grip block integrally formed with the fixing block is provided on the side of the fixing block away from the pressure hammer, and a grip hole is provided on the top of the grip block. A tension spring is provided in the sliding groove, and one end of the tension spring is fixedly connected to the inner wall of the sliding groove at one end close to the pressure hammer, and the other end is fixedly connected to the fixing block.
[0009] Preferably, mounting holes are provided at the four corners of the base.
[0010] Preferably, a lock is provided inside the protective door.
[0011] Preferably, the surfaces of the fixing blocks are all covered with buffer pads.
[0012] The utility model is simple and convenient to use. It only requires locking the protective door, holding the grip hole and pulling the grip block to drive the fixed block to move in the slide groove. At this time, the concrete block to be tested is placed on the fixed plate and the grip hole is released. At this time, the fixed block will clamp the concrete block under the tension of the tension spring to fix it, and then the protective door can be closed to start the hydraulic cylinder, which in turn drives the pressure hammer to apply pressure to the concrete block for testing.
[0013] Compared with the prior art, the beneficial effects of the utility model are that it can effectively prevent injuries when concrete collapses, and can also effectively limit the range of movement of concrete during testing to avoid displacement affecting the test results. A lock is also provided to effectively prevent unrelated personnel from opening the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural schematic diagram of a concrete fracture performance testing device proposed by the utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of a concrete fracture performance testing device proposed by the utility model;
[0016] Figure 3 It is an enlarged view of point A of the present utility model.
[0017] Description of the symbols in the figure
[0018] 1. Base; 12. Pressure sensor; 2. Protective shell; 21. Protective door; 22. Observation window; 3. Pressure device; 31. Support plate; 32. Reinforcement block; 33. Hydraulic cylinder; 34. Telescopic end; 35. Pressure hammer; 4. Fixing device; 41. Fixing plate; 42. Slide; 43. Fixing block; 44. Grip block; 45. Grip hole; 46. Tension spring; 5. Mounting hole. DETAILED DESCRIPTION
[0019] like Figure 1 As shown, a concrete fracture performance testing device includes a base 1, a pressure sensor 12 is fixedly installed in the middle of the base 1, and the pressure sensor 12 can adopt models such as NTJH-2A, a protective shell 2 is fixedly installed on the top of the base 1, and a protective door 21 is rotatably connected to one side of the protective shell 2 through a hinge, and an observation window 22 is provided on the surface of the protective door 21, and the observation window 22 can be used to observe the test results and the test process. A pressure device 3 is provided in the protective shell 2, and a fixing device 4 is provided under the pressure device 3. Mounting holes 5 are provided at the four corners of the base 1, and the device can be fixedly installed by setting bolts and other fixing tools in the mounting holes 5. A lock is provided in the protective door 21, and the lock can effectively prevent unauthorized personnel from opening the device.
[0020] like Figure 2 and Figure 3As shown, the pressure device 3 includes a support plate 31, both ends of the support plate 31 are fixedly connected to the inner wall of the protective shell 2, both ends of the support plate 31 are provided with a reinforcement block 32 integrally formed with the support plate 31, one end of the reinforcement block 32 is fixedly connected to the inner wall of the protective shell 2, a hydraulic cylinder 33 is fixedly installed on the top of the support plate 31, a telescopic end 34 integrally formed with the hydraulic cylinder 33 is provided on one side of the hydraulic cylinder 33, the telescopic end 34 passes through the support plate 31 and is fixedly connected with a pressure hammer 35, the fixing device 4 includes a fixing plate 41, a plurality of slide grooves 42 are provided on the surface of the fixing plate 41, fixing blocks 43 are slidably installed in the slide grooves 42, a grip block 44 integrally formed with the fixing block 43 is provided on the side of the fixing block 43 away from the pressure hammer 35, a grip hole 45 is provided on the top of the grip block 44, a tension spring 46 is provided in the slide groove 42, and models such as TH002 can be adopted, one end of the tension spring 46 is fixedly connected to the inner wall of one end of the slide groove 42 close to the pressure hammer 35, and the other end of the tension spring 46 is fixedly connected to the inner wall of the end of the slide groove 42 close to the pressure hammer 35 The ends are fixedly connected to the fixed blocks 43, and the surfaces of the fixed blocks 43 are sleeved with buffer pads, which can be made of flexible materials such as rubber and sponge, which can effectively reduce the damage caused by the collision between the concrete and the equipment. In actual use, it is only necessary to open the protective door 21, and then hold the grip hole 45 to pull the grip block 44 to drive the fixed block 43 to move. After the fixed block 43 is pulled to a suitable place, the concrete to be tested can be placed on the surface of the fixed plate 41, and then the hand holding the grip hole 45 is released. The fixed block 43 will clamp the concrete under the tension of the tension spring 46. At this time, the protective door 21 is closed and the hydraulic cylinder 33 is started, so that the hydraulic cylinder 33 drives the pressure hammer 35 to apply pressure to the concrete on the fixed plate 41. At this time, the test result can be judged through the observation window 22 and the pressure sensor 12. If the concrete collapses during the test, the debris that collapses will also be blocked by the protective shell 2 and the protective door 21 to avoid injury.
Claims
1. A concrete fracture performance testing device, comprising a base (1), a pressure sensor (12) being fixedly mounted in the middle of the base (1), characterized in that: A protective shell (2) is fixedly mounted on the top of the base (1); a protective door (21) is rotatably connected to one side of the protective shell (2) via a hinge; an observation window (22) is provided on the surface of the protective door (21); a pressure device (3) is provided inside the protective shell (2); and a fixing device (4) is provided below the pressure device (3).
2. A concrete fracture performance testing device according to claim 1, characterized in that: The pressure device (3) comprises a support plate (31), both ends of the support plate (31) are fixedly connected to the inner wall of the protective shell (2), both ends of the support plate (31) are provided with reinforcement blocks (32) integrally formed with the support plate (31), one end of the reinforcement block (32) is fixedly connected to the inner wall of the protective shell (2), a hydraulic cylinder (33) is fixedly mounted on the top of the support plate (31), one side of the hydraulic cylinder (33) is provided with a telescopic end (34) integrally formed with the hydraulic cylinder (33), and the telescopic end (34) passes through the support plate (31) and is fixedly connected to a pressure hammer (35).
3. A concrete fracture performance testing device according to claim 1 or 2, characterized in that: The fixing device (4) comprises a fixing plate (41), a surface of which is provided with a plurality of slide grooves (42), a fixing block (43) being slidably mounted in each of the slide grooves (42), a gripping block (44) being integrally formed with the fixing block (43) being provided on a side of the fixing block (43) away from the pressure hammer (35), a gripping hole (45) being provided on the top of the gripping block (44), a tension spring (46) being provided in the slide groove (42), one end of the tension spring (46) being fixedly connected to an inner wall of one end of the slide groove (42) close to the pressure hammer (35), and the other end of the tension spring (46) being fixedly connected to the fixing block (43).
4. A concrete fracture performance testing device according to claim 1 or 2, characterized in that: The base (1) is provided with mounting holes (5) at four corners.
5. A concrete fracture performance testing device according to claim 3, characterized in that: The base (1) is provided with mounting holes (5) at four corners.
6. A concrete fracture performance testing device according to claim 1, 2 or 5, characterized in that: A lock is arranged inside the protective door (21).
7. A concrete fracture performance testing device according to claim 3, characterized in that: A lock is arranged inside the protective door (21).
8. A concrete fracture performance testing device according to claim 4, characterized in that: A lock is arranged inside the protective door (21).
9. A concrete fracture performance testing device according to claim 3, characterized in that: The surfaces of the fixing blocks (43) are all sleeved with buffer pads.