Reinforcing steel bar tensile strength testing device
By introducing heating and driving components into the steel bar tensile strength testing device, the tensile process of steel bars under high temperature environment is simulated, which solves the problem that traditional testing devices cannot reflect the performance changes of steel bars under high temperature, and improves the safety and stability of construction projects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-04-07
AI Technical Summary
Existing steel bar tensile strength testing devices fail to consider the impact of temperature changes on steel bar performance, resulting in a decrease in the tensile strength of steel bars in high-temperature environments. This makes it impossible to accurately reflect their actual application effect and affects the safety and long-term stability of building projects.
A steel bar tensile strength testing device was designed, comprising a test bench, support frame, drive assembly, sliding head, heating assembly, and pressure detection assembly. The device heats the steel bar with a hot air blower and uses the drive assembly and sliding head to simulate the tensile process of the steel bar under high temperature conditions, thereby detecting its tensile strength in real time.
It enables accurate testing of the tensile strength of steel bars in high-temperature environments, improving the safety and long-term stability of building projects.
Smart Images
Figure CN224095573U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel bar testing technology, and in particular to a steel bar tensile strength testing device. Background Technology
[0002] Reinforcing bars refer to steel used in reinforced concrete and prestressed reinforced concrete. Their cross-section is circular, and sometimes square with rounded corners. Various sampling tests are required during the preparation and production of reinforcing bars, and the tensile strength of reinforcing bars is one of them.
[0003] Existing steel bar tensile strength testing devices typically fix the steel bar on a testing machine, apply gradually increasing tensile force until the steel bar breaks, and record relevant mechanical data such as tensile strength, yield strength, and elongation. Traditional testing equipment is generally carried out at room temperature, has standardized testing conditions, ensures the consistency and reliability of experimental results, and is easy to operate and data is easy to obtain.
[0004] However, steel bars inside building walls are affected by different temperatures, and their strength usually decreases under high-temperature environments. Especially under long-term high-temperature conditions, the material structure of steel bars may change, leading to a decrease in their tensile strength. Traditional room-temperature testing methods do not take into account the impact of temperature changes on steel bar performance. Therefore, relying solely on room-temperature test data cannot accurately simulate the strength performance of steel bars in actual applications. This means that the tensile strength data of steel bars cannot fully reflect their actual application effect under high-temperature environments, thus affecting the safety and long-term stability of building projects. Utility Model Content
[0005] This utility model aims to at least partially solve one of the technical problems in the related art.
[0006] Therefore, the purpose of this utility model is to propose a steel bar tensile strength testing device, so as to enable workers to test the tensile strength data of steel bars in a high-temperature environment, reflect its actual application effect in a high-temperature environment, and thus improve the safety and long-term stability of construction projects.
[0007] To achieve the above objectives, this utility model proposes a steel bar tensile strength testing device, comprising a testing platform, a support frame, a drive assembly, a sliding head, a mounting plate, a heating assembly, and a pressure detection assembly. The support frame is fixedly connected to the top of the testing platform, the drive assembly is mounted on the support frame, the sliding head is symmetrically slidably connected to the inner wall of the top of the testing platform, the mounting plate is fixedly connected to one end of the sliding head, and the top of the sliding head is fixedly connected to the end of the drive assembly. The heating assembly includes a hot air blower, a mounting base, a protective cover, and a connecting hose. The hot air blower is mounted on the top of the testing platform, the mounting base is fixedly connected to the middle of the top of the testing platform, one end of the protective cover is rotatably connected to the inner wall of the mounting base, the connecting hose is provided between the top of the protective cover and the hot air blower, and the pressure detection assembly is provided between the other end of the sliding head and the end of the inner wall of the testing platform, and is connected through the pressure detection assembly.
[0008] This utility model discloses a steel bar tensile strength testing device. By starting a hot air blower, hot air is delivered to the inside of a protective cover plate through a connecting hose, thereby heating the steel bar to be tested. Then, by activating a drive assembly, the two sliding heads are gradually moved apart, thus testing the tensile strength of the steel bar. This allows workers to test the tensile strength data of steel bars in a high-temperature environment, reflecting its actual application effect in high-temperature environments, thereby improving the safety and long-term stability of construction projects.
[0009] In addition, the steel bar tensile strength testing device proposed above according to this utility model may also have the following additional technical features:
[0010] Specifically, the drive assembly includes a drive device, a lower pressure plate, a hinge seat, and a connecting arm. The drive device is mounted on the top of the support frame, and the output end of the drive device passes through the top of the support frame and is fixedly connected to the top of the lower pressure plate. The hinge seat is fixedly connected to the top of the sliding head, and the connecting arm is hinged between the hinge seat and the bottom of the lower pressure plate and connected through the connecting arm.
[0011] Specifically, the pressure detection assembly includes a support spring, a pressure sensor, and a controller. The pressure sensor is fixedly connected to the inner wall end of the test bench. The other end of the sliding head is detachably installed with the support spring between it and the end of the pressure sensor, and the controller is installed on the side wall of the test bench.
[0012] Specifically, the top of the mounting plate is provided with a placement groove, and a fixing sleeve is installed on the top of the mounting plate by fastening bolts.
[0013] Specifically, the bottom of the protective cover is in contact with the top of the test bench, and an exhaust nozzle is installed on the top inner side of the protective cover.
[0014] Specifically, the pressure sensor is electrically connected to the controller, and the controller is electrically connected to an external power source.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the mounting plate of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the support spring of this utility model;
[0020] Figure 4 This utility model Figure 3 A magnified structural diagram of part A in the middle.
[0021] In the diagram, 1. Test bench; 2. Support frame; 3. Drive assembly; 31. Drive device; 32. Lower pressure plate; 33. Hinge seat; 34. Connecting arm; 4. Sliding head; 5. Mounting plate; 6. Heating assembly; 61. Hot air blower; 62. Mounting base; 63. Protective cover; 64. Connecting hose; 7. Pressure detection assembly; 71. Support spring; 72. Pressure sensor; 73. Controller. Detailed Implementation
[0022] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.
[0023] The steel bar tensile strength testing device of this utility model embodiment will be described below with reference to the accompanying drawings.
[0024] like Figures 1-4As shown, the steel bar tensile strength testing device of this utility model embodiment may include a test platform 1, a support frame 2, a drive assembly 3, a sliding head 4, a mounting plate 5, a heating assembly 6, and a pressure detection assembly 7.
[0025] The support frame 2 is fixedly connected to the top of the test bench 1, the drive assembly 3 is installed on the support frame 2, the sliding head 4 is symmetrically slidably connected to the inner wall of the top of the test bench 1, the mounting plate 5 is fixedly connected to one end of the sliding head 4, and the top of the sliding head 4 is fixedly connected to the end of the drive assembly 3.
[0026] Furthermore, such as Figure 1 As shown, the top of the mounting plate 5 is provided with a placement groove, and a fixing sleeve is installed on the top of the mounting plate 5 by fastening bolts.
[0027] It should be noted that the test bench 1 described in this embodiment has a guide groove on its top, and two sliding heads 4 are provided and symmetrically slidably connected to the inner wall of the guide groove. The bottom of the fixed sleeve plate also has a placement groove. The ends of the steel bars to be tested can be clamped and fixed through the two placement grooves to ensure the stability of the ends of the steel bars when they are stretched.
[0028] The heating assembly 6 includes a hot air blower 61, a mounting base 62, a protective cover 63, and a connecting hose 64.
[0029] The hot air blower 61 is installed on the top of the test bench 1, the mounting base 62 is fixedly connected to the middle of the top of the test bench 1, one end of the protective cover 63 is rotatably connected to the inner wall of the mounting base 62, and a connecting hose 64 is provided between the top of the protective cover 63 and the hot air blower 61, and they are connected through the connecting hose 64.
[0030] Furthermore, such as Figure 1 As shown, the bottom of the protective cover 63 is in contact with the top of the test bench 1, and an exhaust nozzle is installed on the top inner side of the protective cover 63.
[0031] It should be noted that the outer wall of the protective cover 63 described in this embodiment is fixedly connected with a handle, and a heat insulation sleeve is fitted on the handle. A rotating groove for opening and closing the protective cover 63 is provided on one side of the mounting base 62.
[0032] A pressure detection component 7 is provided between the other end of the sliding head 4 and the inner wall end of the test bench 1, and is connected to it through the pressure detection component 7.
[0033] It should be noted that the outer wall of the sliding head 4 described in this embodiment is symmetrically fixedly connected with a guide plate, and the inner wall of the guide groove is symmetrically provided with a snap-fit groove that matches the guide plate.
[0034] Specifically, to conduct tensile strength tests on reinforcing bars at different temperatures, a hot air blower 61 is installed on the top of the test bench 1, a mounting base 62 is fixedly connected to the top center of the test bench 1, one end of a protective cover plate 63 is rotatably connected to the inner wall of the mounting base 62, a connecting hose 64 is provided between the top of the protective cover plate 63 and the hot air blower 61, and the two ends of the reinforcing bars are first placed on the mounting plate 5, then the ends of the reinforcing bars are fixed, and then the protective cover plate 63 is installed. The 3-pronged mechanism is engaged on the top of the test bench 1. Then, by starting the hot air blower 61, hot air is delivered to the inside of the protective cover plate 63 through the connecting hose 64, thereby heating the steel bar to be tested. Then, by starting the drive assembly 3, the two sliding heads 4 are gradually moved away from each other, thereby testing the tensile strength of the steel bar. This allows the staff to test the tensile strength data of the steel bar in a high-temperature environment, reflecting its actual application effect in a high-temperature environment, thereby improving the safety and long-term stability of the construction project. At the same time, during the test, the sliding head 4 squeezes the pressure detection assembly 7, thereby detecting the tensile strength in real time.
[0035] In one embodiment of this utility model, such as Figures 1-4 As shown, the drive assembly 3 includes a drive device 31, a lower pressure plate 32, a hinge seat 33, and a connecting arm 34. The drive device 31 is mounted on the top of the support frame 2. The output end of the drive device 31 passes through the top of the support frame 2 and is fixedly connected to the top of the lower pressure plate 32. The hinge seat 33 is fixedly connected to the top of the sliding head 4. A connecting arm 34 is provided between the hinge seat 33 and the bottom of the lower pressure plate 32, and they are connected through the connecting arm 34.
[0036] It should be noted that the driving device 31 described in this embodiment is a hydraulic cylinder, and the bottom of the lower pressure plate 32 is symmetrically and fixedly connected with a hinge sleeve plate. The two ends of the connecting arm 34 are respectively rotatably connected inside the hinge seat 33 and inside the hinge sleeve plate.
[0037] Specifically, in order to facilitate the tensile strength test of steel bars, the drive device 31 is installed on the top of the support frame 2. The output end of the drive device 31 passes through the top of the support frame 2 and is fixedly connected to the top of the lower pressure plate 32. The hinge seat 33 is fixedly connected to the top of the sliding head 4. A connecting arm 34 is hinged between the hinge seat 33 and the bottom of the lower pressure plate 32 and connected through the connecting arm 34. Then, the drive device 31 drives the lower pressure plate 32 to press down. Under the action of the connecting arm 34, the sliding head 4 can be driven to slide in the guide groove, thereby pulling the steel bar and realizing the tensile strength test of the steel bar.
[0038] In one embodiment of this utility model, such asFigures 1-4 As shown, the pressure detection assembly 7 includes a support spring 71, a pressure sensor 72, and a controller 73. The pressure sensor 72 is fixedly connected to the end of the inner wall of the test bench 1. The other end of the sliding head 4 is detachably connected to the end of the pressure sensor 72 via the support spring 71. The controller 73 is installed on the side wall of the test bench 1.
[0039] Furthermore, such as Figure 3 As shown, pressure sensor 72 is electrically connected to controller 73, and controller 73 is electrically connected to an external power supply.
[0040] Specifically, in order to understand the tensile strength in real time, since the pressure sensor 72 is fixedly connected to the inner wall end of the test bench 1, a support spring 71 is detachably installed between the other end of the sliding head 4 and the end of the pressure sensor 72, and is connected through the support spring 71. The controller 73 is installed on the side wall of the test bench 1. When the sliding head 4 slides in the guide groove, it will squeeze the support spring 71. When the support spring 71 is squeezed, it can squeeze the pressure sensor 72. Thus, the pressure sensor 72 can transmit the pressure signal to the controller 73 in real time, so that the tensile strength can be understood in real time.
[0041] In summary, the steel bar tensile strength testing device of this utility model, by starting the hot air blower 61, delivers hot air through the connecting hose 64 to the inside of the protective cover plate 63, thereby heating the steel bar to be tested. Then, by starting the drive component 3, the two sliding heads 4 are gradually moved away under the action of the drive component 3, thereby testing the tensile strength of the steel bar. This allows the staff to test the tensile strength data of the steel bar in a high-temperature environment, reflecting its actual application effect in a high-temperature environment, thereby improving the safety and long-term stability of the construction project.
[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A device for testing the tensile strength of reinforcing bars, characterized in that, It includes a test bench (1), a support frame (2), a drive assembly (3), a sliding head (4), a mounting plate (5), a heating assembly (6), and a pressure detection assembly (7), among which, The support frame (2) is fixedly connected to the top of the test bench (1), the drive assembly (3) is installed on the support frame (2), the sliding head (4) is symmetrically slidably connected to the top inner wall of the test bench (1), the assembly plate (5) is fixedly connected to one end of the sliding head (4), and the top of the sliding head (4) is fixedly connected to the end of the drive assembly (3). The heating assembly (6) includes a hot air blower (61), a mounting base (62), a protective cover (63), and a connecting hose (64), wherein, The hot air blower (61) is installed on the top of the test bench (1), the mounting base (62) is fixedly connected to the middle of the top of the test bench (1), one end of the protective cover (63) is rotatably connected to the inner wall of the mounting base (62), and the top of the protective cover (63) and the hot air blower (61) are provided with the connecting hose (64) and connected through the connecting hose (64); The pressure detection component (7) is provided between the other end of the sliding head (4) and the inner wall end of the test bench (1), and is connected through the pressure detection component (7).
2. The steel bar tensile strength testing device according to claim 1, characterized in that, The drive assembly (3) includes a drive device (31), a lower pressure plate (32), a hinge seat (33), and a connecting arm (34), wherein, The drive device (31) is installed on the top of the support frame (2), and the output end of the drive device (31) passes through the top of the support frame (2) and is fixedly connected to the top of the lower pressure plate (32). The hinge seat (33) is fixedly connected to the top of the sliding head (4), and the connecting arm (34) is hinged between the hinge seat (33) and the bottom of the lower pressure plate (32), and they are connected through the connecting arm (34).
3. The steel bar tensile strength testing device according to claim 1, characterized in that, The pressure detection assembly (7) includes a support spring (71), a pressure sensor (72), and a controller (73), wherein, The pressure sensor (72) is fixedly connected to the end of the inner wall of the test bench (1), and the other end of the sliding head (4) is detachably installed with the support spring (71) between the end of the pressure sensor (72) and the support spring (71). The controller (73) is installed on the side wall of the test bench (1).
4. The steel bar tensile strength testing device according to claim 1, characterized in that, The top of the mounting plate (5) is provided with a placement groove, and a fixing sleeve is installed on the top of the mounting plate (5) by fastening bolts.
5. The steel bar tensile strength testing device according to claim 1, characterized in that, The bottom of the protective cover (63) is in contact with the top of the test bench (1), and an exhaust nozzle is installed on the top inner side of the protective cover (63).
6. The steel bar tensile strength testing device according to claim 3, characterized in that, The pressure sensor (72) is electrically connected to the controller (73), and the controller (73) is electrically connected to an external power source.