Reinforcing steel bar tension strength detection equipment

Abstract

The utility model belongs to the technical field of reinforcing steel bar strength detection, and particularly relates to reinforcing steel bar tension strength detection equipment which comprises a detection table, the middle part of the detection table is in sliding connection with a first sliding supporting seat; the top of the detection table is fixedly connected with a fixed supporting seat; a hydraulic rod is connected between the fixed supporting seat and the first sliding supporting seat; the top of the first sliding supporting seat and the top of the fixed supporting seat are both fixedly connected with fixed seats. A fixing assembly is arranged on the side wall of the fixing seat; according to the step, by arranging a detection table, a first sliding supporting seat, a fixed supporting seat, a hydraulic rod, a fixed seat and a fixed assembly, the tensile strength of the steel bar can be detected, by arranging a display screen, a worker can observe the pushing force of the hydraulic rod more conveniently, by arranging a dust blocking cover, the steel bar which is pulled and broken can be blocked, and the working efficiency is improved. And therefore, the situation that the surrounding environment is polluted due to outburst of reinforcing steel bars and chippings is reduced, and the safety of the device in the using process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar strength detection, in particular to a steel bar tensile strength detection device. Background Art

[0002] Rebar refers to steel used for reinforced concrete and prestressed reinforced concrete. Its cross-section is mostly circular. Rebar mainly bears tensile stress in concrete. Deformed rebar has greater bonding ability with concrete due to the effect of ribs, and thus can better withstand the effects of external forces. Rebar is widely used in various building structures, especially large, heavy, light thin-walled and high-rise building structures.

[0003] In the prior art, it is necessary to test the tensile strength of steel bars in the field of construction engineering. During long-term use and observation, it is found that the current steel bar tensile strength testing equipment generally does not have a protective mechanism during the testing process, and steel bars are prone to breakage during the testing process, resulting in reduced safety of the steel bar tensile strength testing equipment during use. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background technology, a steel bar tensile strength testing device is proposed.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a steel bar tensile strength testing device described in the utility model comprises a testing platform; a first sliding support seat is slidably connected to the middle part of the testing platform; a fixed support seat is fixedly connected to the top of the testing platform; a hydraulic rod is connected between the fixed support seat and the first sliding support seat; a fixed seat is fixedly connected to the top of the first sliding support seat and the fixed support seat; a fixing assembly is provided on the side wall of the fixed seat; the fixing assembly is a pair and symmetrically arranged on the side close to each other of a pair of fixed seats; a display screen is installed on the side wall of the testing platform; the display screen is electrically connected to the hydraulic rod; a dust cover is hinged on the top of the testing platform; the dust cover is made of transparent material; this step can detect the tensile strength of the steel bar by providing the testing platform, the first sliding support seat, the fixed support seat, the hydraulic rod, the fixed seat and the fixed assembly, and the staff can observe the pushing force of the hydraulic rod more conveniently by providing the display screen, and the steel bar that is pulled and broken can be blocked by providing the dust cover, thereby reducing the collapse of steel bars and debris, polluting the surrounding environment, and improving the safety of this device during use.

[0006] In one embodiment, the fixing assembly includes a first sliding groove; the first sliding groove is opened in the middle of the fixing seat; a second sliding support seat is provided in the middle of the first sliding groove; the second sliding support seat is a pair and symmetrically arranged in the middle of the first sliding groove; a threaded rod is rotatably connected in the middle of the first sliding groove; the thread in the middle of the threaded rod is reversely arranged; the threaded rod and the second sliding support seat are matched with a screw nut pair; a nut is fixedly connected to the end of the threaded rod; a first clamping plate is fixedly connected to the side wall of the second sliding support seat; this step is provided with the first sliding groove, the threaded rod, the nut, the second sliding support seat and the first clamping plate, so that when the tensile strength of the steel bar is tested, the two ends of the steel bar can be clamped, and then the tensile strength of the steel bar can be tested.

[0007] In one embodiment, a second clamping plate is hinged at the end of the first clamping plate; a torsion spring is provided between the second clamping plate and the first clamping plate; by providing the second clamping plate, when the first clamping plate clamps the steel bar, the torsion spring will pull the second clamping plate, so that the second clamping plate fits against the side wall of the steel bar, thereby increasing the contact area between the first clamping plate and the side wall of the steel bar, thereby improving the fixing effect of the first clamping plate on the steel bar and improving the stability during the tensile strength test of the steel bar.

[0008] In one embodiment, the side walls of the first clamping plate and the second clamping plate are both fixedly connected with fixing teeth; the fixing teeth are multiple and evenly distributed on the side walls of the first clamping plate and the second clamping plate; this step is provided with fixing teeth, so that when the first clamping plate and the second clamping plate fix the steel bar, the pressure of the first clamping plate and the second clamping plate on the side wall of the steel bar can be increased, thereby increasing the friction between the first clamping plate and the second clamping plate and the steel bar, further improving the fixing effect of the first clamping plate and the second clamping plate on the steel bar, and further improving the stability during the tensile strength test of the steel bar.

[0009] In one embodiment, a first support shaft is fixedly connected to the middle of the detection platform; a second sliding groove is opened in the middle of the first sliding support seat; the second sliding groove slides along the first support shaft; this step is provided with the first support shaft and the second sliding groove, so that the movement of the first sliding support seat can be guided when the first sliding support seat moves along the detection platform, thereby reducing the deviation and jamming of the first sliding support seat when sliding along the detection platform, and improving the stability of the first sliding support seat when moving along the detection platform.

[0010] In one embodiment, a support frame is fixedly connected to the bottom of the testing table; a collection box is provided in the middle of the support frame; the collection box is slidably matched with the support frame; this step, by providing a support frame and a collection box, can centrally collect the inspected steel waste and debris generated by the inspection, so that the staff can uniformly handle the steel waste and debris, thereby reducing the staff's workload and improving the staff's work efficiency.

[0011] In one embodiment, a magnetic plate is fixedly connected to the middle of the collection box; the magnetic plate is made of magnetic material; this step can adsorb steel waste and debris by providing a magnetic plate, thereby reducing the splashing of debris, thereby reducing the need for staff to clean the surrounding environment, further reducing the workload of staff, and further improving the work efficiency of staff.

[0012] In one embodiment, a guide groove is provided on the top of the magnetic plate; the guide grooves are multiple and evenly distributed on the top of the magnetic plate; this step, by providing the guide grooves, can guide the position of the steel bars after the steel bar waste falls into the collection box, thereby allowing the steel bars to be stored more neatly in the collection box, thereby increasing the storage capacity of the collection box.

[0013] In one embodiment, a rotation groove is provided at the bottom of the inner side wall of the support frame; the rotation grooves are multiple and evenly distributed at the bottom of the inner side wall of the support frame; a second support shaft is fixedly connected to the middle of the rotation groove; a roller is rotatably connected to the middle of the second support shaft; this step, by providing the rotation groove, the second support shaft and the roller, can change the sliding contact between the bottom of the collection box and the bottom of the inner side wall of the support frame into a rolling contact between the bottom of the collection box and the side wall of the roller, thereby reducing the friction force when the bottom of the collection box contacts the bottom of the inner side wall of the support frame, thereby reducing the wear when the bottom of the collection box contacts the bottom of the inner side wall of the support frame, and improving the service life of the device.

[0014] In one embodiment, a ball is rotatably connected to the bottom of the fixed seat; a rolling groove is provided on the top of the testing platform; the ball rolls inside the rolling groove; this step, by providing the ball and the rolling groove, can change the sliding contact between the bottom of the fixed seat and the top of the testing platform into a rolling contact with the side wall of the ball, thereby reducing the friction force when the bottom of the fixed seat contacts the top of the testing platform, allowing the fixed seat to move more smoothly along the testing platform, further improving the stability during the tensile strength test of the steel bars.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The steel bar tensile strength testing device described in the utility model can test the tensile strength of steel bars by providing a testing platform, a first sliding support seat, a fixed support seat, a hydraulic rod, a fixed seat and a fixed assembly. By providing a display screen, the staff can more conveniently observe the pushing force of the hydraulic rod. By providing a dust cover, the steel bars that are pulled and broken can be blocked, thereby reducing the collapse of steel bars and debris, polluting the surrounding environment, and improving the safety of the device during use.

[0017] 2. The steel bar tensile strength testing device described in the utility model is provided with a first sliding groove, a threaded rod, a nut, a second sliding support seat and a first clamping plate. When the tensile strength of the steel bar is tested, the two ends of the steel bar can be clamped, thereby testing the tensile strength of the steel bar.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic implementation modes and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a steel bar tensile strength testing device according to one embodiment of the utility model;

[0021] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a steel bar tensile strength testing device according to an embodiment of the utility model;

[0022] Figure 3 This is a schematic structural diagram of a fixing seat in a steel bar tensile strength testing device according to one embodiment of the utility model;

[0023] Figure 4 It is a side sectional view of a steel bar tensile strength testing device according to one embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1 testing platform 11 first sliding support seat

[0026] 12 Fixed support seat 13 Hydraulic rod

[0027] 14 fixed seat 15 display screen

[0028] 16 dust cover 2 first sliding groove

[0029] 21 threaded rod 22 nut

[0030] 23 second sliding support seat 24 first clamping plate

[0031] 3 Second clamping plate 4 Fixed teeth

[0032] 5 first support shaft 51 second sliding groove

[0033] 6 support frame 61 collection box

[0034] 7 Magnetic plate 8 Guide groove

[0035] 9 Rotation groove 91 Second support shaft

[0036] 92 rollers 10 balls

[0037] 101 rolling groove DETAILED DESCRIPTION

[0038] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0039] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices; "fixed" or "fixed connection" generally refers to common mechanical connection methods, such as threaded connection, welding or bonding, etc.

[0041] In order to solve the problem mentioned in the background technology part, in the field of construction engineering, it is necessary to test the tensile strength of steel bars. During long-term use and observation, it is found that the current tensile strength testing equipment for steel bars generally does not have a protective mechanism during the testing process, and the steel bars are prone to breakage during the testing process, resulting in reduced safety of the tensile strength testing equipment for steel bars during use. The utility model provides a tensile strength testing equipment for steel bars, such as Figures 1 to 4 As shown, a steel bar tensile strength testing device described in an embodiment of the utility model comprises a testing platform 1; a first sliding support seat 11 is slidably connected to the middle of the testing platform 1; a fixed support seat 12 is fixedly connected to the top of the testing platform 1; a hydraulic rod 13 is connected between the fixed support seat 12 and the first sliding support seat 11; a fixed seat 14 is fixedly connected to the top of the first sliding support seat 11 and the fixed support seat 12; a fixing assembly is provided on the side wall of the fixed seat 14; the fixing assembly is a pair and symmetrically arranged on the side close to each other of a pair of fixed seats 14; a display screen 15 is installed on the side wall of the testing platform 1; the display screen 15 is electrically connected to the hydraulic rod 13; a dust cover 16 is hinged on the top of the testing platform 1; the dust cover 16 is made of transparent material; when working, the staff will need to test the tensile strength The steel bar to be tested is fixed by a fixing assembly, and then the hydraulic rod 13 is started to push the first sliding support seat 11, so that the first sliding support seat 11 slides along the testing platform 1, and then the steel bar fixed in the middle of a pair of fixing assemblies is pulled. At this time, the staff can observe the pulling force on the steel bar through the display screen 15. This step can detect the tensile strength of the steel bar by providing a testing platform 1, a first sliding support seat 11, a fixed support seat 12, a hydraulic rod 13, a fixed seat 14 and a fixing assembly. By providing a display screen 15, the staff can more conveniently observe the pushing force of the hydraulic rod 13. By providing a dust cover 16, the pulled and broken steel bars can be blocked, thereby reducing the collapse of steel bars and debris, polluting the surrounding environment, and improving the safety of the device during use.

[0042] like Figures 2 to 4As shown, the fixing assembly includes a first sliding groove 2; the first sliding groove 2 is opened in the middle of the fixing seat 14; a second sliding support seat 23 is provided in the middle of the first sliding groove 2; the second sliding support seat 23 is a pair and symmetrically arranged in the middle of the first sliding groove 2; a threaded rod 21 is rotatably connected in the middle of the first sliding groove 2; the thread in the middle of the threaded rod 21 is reversely arranged; the threaded rod 21 and the second sliding support seat 23 are matched with a screw nut pair; a nut 22 is fixedly connected to the end of the threaded rod 21; the side wall of the second sliding support seat 23 is fixedly connected to the first Clamping plate 24; during operation, the staff puts the steel bar between a pair of first clamping plates 24. At this time, the staff drives the second sliding support seat 23 to rotate through the nut 22, and then drives the pair of second sliding support seats 23 to slide close to each other inside the first sliding groove 2, thereby clamping the steel bar. This step is provided with the first sliding groove 2, the threaded rod 21, the nut 22, the second sliding support seat 23 and the first clamping plate 24, so that when the tensile strength of the steel bar is tested, the two ends of the steel bar can be clamped, thereby testing the tensile strength of the steel bar.

[0043] like Figure 2 and Figure 3 As shown, a second clamping plate 3 is hinged at the end of the first clamping plate 24; a torsion spring is provided between the second clamping plate 3 and the first clamping plate 24; in this step, by providing the second clamping plate 3, when the first clamping plate 24 clamps the steel bar, the torsion spring will pull the second clamping plate 3, so that the second clamping plate 3 fits against the side wall of the steel bar, thereby increasing the contact area between the first clamping plate 24 and the side wall of the steel bar, thereby improving the fixing effect of the first clamping plate 24 on the steel bar and improving the stability during the tensile strength test of the steel bar.

[0044] like Figure 2 and Figure 3 As shown, the first clamping plate 24 and the second clamping plate 3 side walls are fixedly connected with fixing teeth 4; the fixing teeth 4 are multiple and evenly distributed on the side walls of the first clamping plate 24 and the second clamping plate 3; this step is provided with fixing teeth 4, which can increase the pressure of the first clamping plate 24 and the second clamping plate 3 on the side walls of the steel bars when the first clamping plate 24 and the second clamping plate 3 fix the steel bars, thereby increasing the friction between the first clamping plate 24 and the second clamping plate 3 and the steel bars, further improving the fixing effect of the first clamping plate 24 and the second clamping plate 3 on the steel bars, and further improving the stability during the tensile strength test of the steel bars.

[0045] like Figure 2 and Figure 4As shown, a first support shaft 5 is fixedly connected to the middle of the detection platform 1; a second sliding groove 51 is opened in the middle of the first sliding support seat 11; the second sliding groove 51 slides along the first support shaft 5; this step is provided with the first support shaft 5 and the second sliding groove 51, so that the movement of the first sliding support seat 11 can be guided when the first sliding support seat 11 moves along the detection platform 1, thereby reducing the deviation and jamming of the first sliding support seat 11 when it slides along the detection platform 1, and improving the stability of the first sliding support seat 11 when it moves along the detection platform 1.

[0046] like Figure 1 , Figure 2 and Figure 4 As shown, a support frame 6 is fixedly connected to the bottom of the testing platform 1; a collecting box 61 is provided in the middle of the support frame 6; the collecting box 61 is slidably matched with the support frame 6; this step, by providing the support frame 6 and the collecting box 61, can centrally collect the steel waste after the test and the debris generated by the test, so that the staff can uniformly handle the steel waste and debris, thereby reducing the workload of the staff and improving the work efficiency of the staff.

[0047] like Figure 2 and Figure 4 As shown, a magnetic plate 7 is fixedly connected to the middle of the collection box 61; the magnetic plate 7 is made of magnetic material; this step is provided with a magnetic plate 7, which can adsorb steel waste and debris, thereby reducing the splashing of debris, thereby reducing the need for staff to clean the surrounding environment, further reducing the workload of staff, and further improving the work efficiency of staff.

[0048] like Figure 2 and Figure 4 As shown, a guide groove 8 is provided on the top of the magnetic plate 7; there are multiple guide grooves 8 and they are evenly distributed on the top of the magnetic plate 7; this step, by providing the guide grooves 8, can guide the position of the steel bars after the steel bar waste falls into the collection box 61, thereby allowing the steel bars to be stored more neatly in the collection box 61, thereby increasing the storage capacity of the collection box 61.

[0049] like Figure 4As shown, a rotating groove 9 is provided at the bottom of the inner wall of the support frame 6; the rotating grooves 9 are multiple and evenly distributed at the bottom of the inner wall of the support frame 6; a second support shaft 91 is fixedly connected to the middle of the rotating groove 9; a roller 92 is rotatably connected to the middle of the second support shaft 91; this step, by providing the rotating groove 9, the second support shaft 91 and the roller 92, can change the sliding contact between the bottom of the collection box 61 and the bottom of the inner wall of the support frame 6 into a rolling contact between the bottom of the collection box 61 and the side wall of the roller 92, thereby reducing the friction force when the bottom of the collection box 61 contacts the bottom of the inner wall of the support frame 6, thereby reducing the wear when the bottom of the collection box 61 contacts the bottom of the inner wall of the support frame 6, and improving the service life of the device.

[0050] like Figure 4 As shown, the bottom of the fixed seat 14 is rotatably connected with a ball 10; the top of the test platform 1 is provided with a rolling groove 101; the ball 10 rolls inside the rolling groove 101; this step, by providing the ball 10 and the rolling groove 101, can change the sliding contact between the bottom of the fixed seat 14 and the top of the test platform 1 into a rolling contact with the side wall of the ball 10, thereby reducing the friction force when the bottom of the fixed seat 14 contacts the top of the test platform 1, allowing the fixed seat 14 to move more smoothly along the test platform 1, further improving the stability during the tensile strength test of the steel bars.

[0051] Working principle: During operation, the staff will fix the steel bar that needs to be tensile tested through the fixing assembly, and then start the hydraulic rod 13 to push the first sliding support seat 11, so that the first sliding support seat 11 slides along the detection table 1, and then pulls the steel bar fixed in the middle of a pair of fixing assemblies. At this time, the staff can observe the tension on the steel bar through the display screen 15. The staff puts the steel bar between a pair of first clamping plates 24. At this time, the staff drives the second sliding support seat 23 to rotate through the nut 22, and then drives a pair of second sliding support seats 23 to slide close to each other inside the first sliding groove 2, and then clamps the steel bar.

[0052] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0053] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] In the several embodiments provided by the present utility model, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0055] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0056] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A steel bar tensile strength testing device, comprising a testing platform (1); characterized in that: The middle of the detection platform (1) is slidably connected to a first sliding support seat (11); the top of the detection platform (1) is fixedly connected to a fixed support seat (12); a hydraulic rod (13) is connected between the fixed support seat (12) and the first sliding support seat (11); the tops of the first sliding support seat (11) and the fixed support seat (12) are both fixedly connected to a fixed seat (14); a fixing component is provided on the side wall of the fixed seat (14); the fixing components are a pair and are symmetrically arranged on one side of a pair of fixed seats (14) close to each other; a display screen (15) is installed on the side wall of the detection platform (1); the display screen (15) is electrically connected to the hydraulic rod (13); a dust cover (16) is hinged on the top of the detection platform (1); the dust cover (16) is made of transparent material.

2. The steel bar tensile strength testing device according to claim 1, characterized in that: The fixing assembly comprises a first sliding groove (2); the first sliding groove (2) is opened in the middle of the fixing seat (14); a second sliding support seat (23) is provided in the middle of the first sliding groove (2); the second sliding support seat (23) is a pair and is symmetrically arranged in the middle of the first sliding groove (2); a threaded rod (21) is rotatably connected in the middle of the first sliding groove (2); the thread in the middle of the threaded rod (21) is arranged in reverse direction; the threaded rod (21) and the second sliding support seat (23) are matched in a screw-nut pair; a nut (22) is fixedly connected to the end of the threaded rod (21); and a first clamping plate (24) is fixedly connected to the side wall of the second sliding support seat (23).

3. The steel bar tensile strength testing device according to claim 2, characterized in that: A second clamping plate (3) is hingedly connected to the end of the first clamping plate (24); a torsion spring is provided between the second clamping plate (3) and the first clamping plate (24).

4. The steel bar tensile strength testing device according to claim 3 is characterized in that: The side walls of the first clamping plate (24) and the second clamping plate (3) are both fixedly connected with fixing teeth (4); the fixing teeth (4) are multiple and evenly distributed on the side walls of the first clamping plate (24) and the second clamping plate (3).

5. The steel bar tensile strength testing device according to claim 4, characterized in that: A first support shaft (5) is fixedly connected to the middle of the detection platform (1); a second sliding groove (51) is provided in the middle of the first sliding support seat (11); and the second sliding groove (51) slides along the first support shaft (5).

6. The steel bar tensile strength testing device according to claim 5, characterized in that: A support frame (6) is fixedly connected to the bottom of the detection platform (1); a collection box (61) is provided in the middle of the support frame (6); and the collection box (61) is slidably matched with the support frame (6).

7. The steel bar tensile strength testing device according to claim 6, characterized in that: A magnetic plate (7) is fixedly connected to the middle of the collection box (61); the magnetic plate (7) is made of magnetic material.

8. The steel bar tensile strength testing device according to claim 7, characterized in that: A guide groove (8) is provided on the top of the magnetic plate (7); the guide grooves (8) are multiple and evenly distributed on the top of the magnetic plate (7).

9. The steel bar tensile strength testing device according to claim 8, characterized in that: A rotation groove (9) is provided at the bottom of the inner side wall of the support frame (6); the rotation grooves (9) are multiple and evenly distributed at the bottom of the inner side wall of the support frame (6); a second support shaft (91) is fixedly connected to the middle of the rotation groove (9); and a roller (92) is rotatably connected to the middle of the second support shaft (91).

10. The steel bar tensile strength testing device according to any one of claims 1 to 9, characterized in that: A ball (10) is rotatably connected to the bottom of the fixing seat (14); a rolling groove (101) is provided on the top of the detection platform (1); and the ball (10) rolls inside the rolling groove (101).

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