Device for detecting tensile property of hot-rolled ribbed steel bar

Abstract

The utility model discloses a hot-rolled ribbed bar tensile property detection device, which relates to the technical field of bar detection, and comprises a base, the upper surface of the base is fixedly connected with a first fixed block, the upper surface of the base is slidably provided with a moving plate, one side of the moving plate is fixedly connected with a tension meter, and the other side of the moving plate is provided with a second fixed block. The output end of the tension meter penetrates through one end of the moving plate and is fixedly connected with a second fixing block, a cavity is formed in the base, a first adjusting mechanism is arranged in the cavity, and the moving plate moves through the first adjusting mechanism. The two ends of the reinforcing steel bar body are placed between the corresponding upper clamping plate and the lower clamping plate respectively, the auxiliary grains on the surface of the reinforcing steel bar body can be placed in the corresponding clamping grooves, then the reinforcing steel bar body can be fixed by moving the upper clamping plate, and meanwhile the reinforcing steel bar body is clamped through each clamping groove so that the phenomenon of pulling-off can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of steel bar testing technology, specifically to a device for testing the tensile properties of hot-rolled ribbed steel bars. Background Technology

[0002] Hot-rolled ribbed steel bars are steel products with ribs that are rolled from steel billets through a rolling mill under high temperature conditions. The main raw materials are high-quality carbon structural steel or low-carbon steel, and sometimes ordinary alloy steel is also used.

[0003] Among them, the hot-rolled ribbed steel bar tensile performance testing device with announcement number CN215985542U includes a force measuring device, a base plate, a test steel bar, a guide plate, a clamping device, a heightening plate, a second hydraulic cylinder, a limiting tube, and a blocking plate. The clamping device includes a support base, and the output shafts of the support base and the blocking plate are connected at opposite ends. Rollers are rotatably connected to the four corner areas of the support base through shafts. A fixing tube is connected to the top of the support base. First hydraulic cylinders are installed at the top and bottom of the fixing tube. Each output shaft of the first hydraulic cylinder is connected to a connecting plate.

[0004] However, existing testing devices for the tensile properties of hot-rolled ribbed steel bars typically use clamps to hold the bars in place. As a result, the bars are prone to pull-out due to the large tensile force during the tensile testing process, which affects the testing results. Utility Model Content

[0005] In view of the problems existing in the current hot-rolled ribbed steel bar tensile performance testing device, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a device for testing the tensile properties of hot-rolled ribbed steel bars, which solves the problem that existing devices for testing the tensile properties of hot-rolled ribbed steel bars usually use clamps to clamp the steel bars, which can easily cause them to pull out due to large tensile forces during the tensile process, thus affecting the testing results.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A device for testing the tensile properties of hot-rolled ribbed steel bars includes a base. A first fixing block is fixedly connected to the upper surface of the base. A movable plate is slidably disposed on the upper surface of the base. A tension gauge is fixedly connected to one side of the movable plate. The output end of the tension gauge passes through one end of the movable plate and is fixedly connected to a second fixing block. A cavity is formed inside the base. A first adjustment mechanism is disposed inside the cavity. The movable plate moves through the first adjustment mechanism. A groove is formed on one side of both the first and second fixing blocks. A lower clamping plate is fixedly connected to the lower surface inside both grooves. An upper clamping plate is slidably disposed above the inside of both grooves. The two upper clamping plates and their corresponding lower clamping plates clamp the steel bar body together. A slot is formed on one side of both upper and lower clamping plates. Each slot matches the steel bar body. A sliding groove is formed on the upper surface inside both grooves. A second adjustment mechanism is disposed inside both sliding grooves. The two upper clamping plates are respectively adjusted by their corresponding second adjustment mechanisms. A driving mechanism is disposed above the first and second fixing blocks. The two second adjustment mechanisms match the driving mechanism.

[0009] Preferably, the first adjustment mechanism includes a first lead screw, a slider, and a first motor. The first lead screw is rotatably connected to the inside of the cavity. The slider is threaded onto the wall of the first lead screw. The upper end of the slider penetrates the upper surface of the cavity and is fixedly connected to the lower surface of the moving plate. The first motor is fixedly connected to one end of the base. One end of the first lead screw penetrates one side of the cavity and is fixedly connected to the output end of the first motor.

[0010] Preferably, the second adjusting mechanism includes two second lead screws, two sleeves, and two first bevel gears. The two second lead screws are rotatably connected to the interior of the corresponding slide grooves. The two sleeves are threaded onto the rod walls of the second lead screws. The two sleeves are fixedly connected to the upper surfaces of the corresponding upper clamping plates. The upper ends of the two second lead screws penetrate the upper surfaces of the slide grooves. The two first bevel gears are fixedly sleeved onto the rod walls of the corresponding second lead screws.

[0011] Preferably, the drive mechanism includes two mounting plates, a first rotating rod, a second rotating rod, two second bevel gears, and a second motor. The two mounting plates are respectively fixedly connected to the upper surfaces of the first and second fixing blocks. The first and second rotating rods are respectively rotatably connected to one side of the corresponding mounting plate. The two second bevel gears are respectively fixedly sleeved on the rod wall of the corresponding first or second rotating rod, and the two second bevel gears respectively mesh with the corresponding first bevel gear. The second motor is fixedly connected to one side of the corresponding mounting plate. One end of the first rotating rod passes through one side of the corresponding mounting plate and is fixedly connected to the output end of the second motor.

[0012] Preferably, a square groove is provided at one end of the second rotating rod, and a square rod is slidably disposed inside the square groove. The end of the square rod away from the second rotating rod is fixedly connected to one end of the first rotating rod.

[0013] Preferably, the interior of each of the two slide grooves is symmetrically provided with a first limiting groove, and a limiting block is fixedly connected inside each of the first limiting grooves. Each limiting block is fixedly connected to the outer surface of the corresponding sleeve.

[0014] Preferably, the upper surface of the cavity has a strip-shaped hole, which matches the slider.

[0015] Preferably, a telescopic rod is symmetrically and fixedly connected between the movable plate and the second fixed block.

[0016] Preferably, the inner wall of the square groove has two symmetrically formed second limiting grooves, and the two second limiting grooves are slidably provided with a limiting strip inside, and the square rod is fixedly connected to one side of the limiting strip.

[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0018] 1. This utility model involves placing both ends of the reinforcing bar body between corresponding upper and lower clamping plates, and ensuring that the textured surface of the reinforcing bar body prevents it from entering the corresponding slots. Then, moving the upper clamping plate can fix the reinforcing bar body, while using each slot to hold the reinforcing bar body in place to prevent it from being pulled out.

[0019] 2. In this utility model, by starting the second motor, the first rotating rod is rotated, and then the second rotating rod is rotated synchronously through the square rod. Then the two second bevel gears are rotated, which in turn drives the two first bevel gears to rotate. Next, the two second lead screws are rotated, which causes the two sleeves to move the corresponding upper clamping plates downward, thereby fixing the steel bar body. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 For the present utility model Figure 1 A sectional view;

[0023] Figure 3 For the present utility model Figure 2 Enlarged view of part A;

[0024] Figure 4 For the present utility model Figure 1 A three-dimensional structural diagram of the second rotating rod and the square rod.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Base; 2. First fixing block; 3. Moving plate; 4. Tension gauge; 5. Second fixing block; 6. Lower clamping plate; 7. Upper clamping plate; 8. Rebar body; 9. First lead screw; 10. Sliding block; 11. First motor; 12. Second lead screw; 13. Sleeve; 14. First bevel gear; 15. Mounting plate; 16. First rotating rod; 17. Second rotating rod; 18. Second bevel gear; 19. Second motor; 20. Square rod; 21. Limiting block; 22. Telescopic rod; 23. Limiting strip. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model discloses a device for testing the tensile properties of hot-rolled ribbed steel bars.

[0029] Example 1

[0030] Reference Figure 1-4 A device for testing the tensile properties of hot-rolled ribbed steel bars includes a base 1, a first fixing block 2 fixedly connected to the upper surface of the base 1, a movable plate 3 slidably disposed on the upper surface of the base 1, a tension gauge 4 fixedly connected to one side of the movable plate 3, the output end of the tension gauge 4 passing through one end of the movable plate 3 and fixedly connected to a second fixing block 5, a cavity opened inside the base 1, and a first adjustment mechanism disposed inside the cavity, the movable plate 3 moving through the first adjustment mechanism, the first adjustment mechanism including a first lead screw 9, a slider 10 and a first motor 11, the first lead screw 9 rotatably connected to the inside of the cavity, the slider 10 threadedly sleeved on the rod wall of the first lead screw 9, the upper end of the slider 10 passing through the upper surface inside the cavity and fixedly connected to the lower surface of the movable plate 3, the first motor 11 fixedly connected to one end of the base 1, and one end of the first lead screw 9 passing through one side of the cavity and fixedly connected to the output end of the first motor 11.

[0031] Start the first motor 11 to make the first lead screw 9 rotate, which in turn makes the slider 10 move the moving plate 3, thereby allowing the second fixed block 5 to move left and right.

[0032] Reference Figure 1-4The first fixing block 2 and the second fixing block 5 each have a groove on one side. The lower surface of the two grooves is fixedly connected to a lower clamping plate 6. The upper surface of the two grooves is slidably arranged with an upper clamping plate 7. The two upper clamping plates 7 and the corresponding lower clamping plates 6 together clamp the steel bar body 8. The two upper clamping plates 7 and the lower clamping plates 6 each have a slot on one side. Each slot matches the steel bar body 8. The upper surface of the two grooves each has a sliding groove. The two sliding grooves each have a second adjustment mechanism. The two upper clamping plates 7 are respectively connected to the corresponding second adjustment mechanism. The second adjustment mechanism includes two second lead screws 12, two sleeves 13 and two first bevel gears 14. The two second lead screws 12 are rotatably connected to the interior of the corresponding sliding groove. The two sleeves 13 are threaded onto the rod wall of the second lead screw 12. The two sleeves 13 are fixedly connected to the upper surface of the corresponding upper clamping plate 7. The upper ends of the two second lead screws 12 penetrate the upper surface of the interior of the sliding groove. The two first bevel gears 14 are fixedly sleeved onto the rod wall of the corresponding second lead screw 12.

[0033] Place both ends of the reinforcing bar body 8 between the corresponding upper clamping plate 7 and lower clamping plate 6, respectively, and ensure that the textured surface of the reinforcing bar body 8 prevents it from entering the corresponding slot. Then, move the upper clamping plate 7 to fix the reinforcing bar body 8, and use each slot to hold the reinforcing bar body 8 in place to prevent it from being pulled out. Then, move the second fixing block 5 to test the tensile strength of the reinforcing bar body 8 and display the specific value through a tension gauge.

[0034] Reference Figure 1-4 A drive mechanism is provided above the first fixing block 2 and the second fixing block 5. Two second adjustment mechanisms are matched with the drive mechanism. The drive mechanism includes two mounting plates 15, a first rotating rod 16, a second rotating rod 17, two second bevel gears 18, and a second motor 19. The two mounting plates 15 are fixedly connected to the upper surfaces of the first fixing block 2 and the second fixing block 5, respectively. The first rotating rod 16 and the second rotating rod 17 are rotatably connected to one side of the corresponding mounting plate 15, respectively. The two second bevel gears 18 are fixedly sleeved on the rod wall of the corresponding first rotating rod 16 or the second rotating rod 17, respectively. The two second bevel gears 18 mesh with the corresponding first bevel gear 14, respectively. The second motor 19 is fixedly connected to one side of the corresponding mounting plate 15. One end of the first rotating rod 16 passes through one side of the corresponding mounting plate 15 and is fixedly connected to the output end of the second motor 19. One end of the second rotating rod 17 is provided with a square groove. A square rod 20 is slidably arranged inside the square groove. The end of the square rod 20 away from the second rotating rod 17 is fixedly connected to one end of the first rotating rod 16.

[0035] Start the second motor 19 to make the first rotating rod 16 rotate. Then, through the square rod 20, the second rotating rod 17 can be rotated synchronously. Then, the two second bevel gears 18 can be rotated, which in turn drives the two first bevel gears 14 to rotate. Next, the two second lead screws 12 can be rotated, so that the two sleeves 13 can drive the corresponding upper clamping plates 7 to move down.

[0036] Example 2

[0037] Based on Example 1, referring to Figure 2 The two slides are symmetrically provided with first limiting grooves inside, and each first limiting groove is fixedly connected with a limiting block 21. Each limiting block 21 is fixedly connected to the outer surface of the corresponding sleeve 13.

[0038] Each limit block 21 can prevent the sleeve 13 from rotating with the corresponding second lead screw 12.

[0039] Example 3

[0040] Based on Example 1, referring to Figure 2 The upper surface of the cavity has a strip-shaped hole that matches the slider 10.

[0041] The strip-shaped hole facilitates the movement of the slider 10.

[0042] Example 4

[0043] Based on Example 1, referring to Figure 1-2 Telescopic rods 22 are symmetrically and fixedly connected between the movable plate 3 and the second fixed block 5.

[0044] The telescopic rod 22 can provide support, thereby making the second fixed block 5 more stable.

[0045] Example 5

[0046] Based on Example 1, referring to Figure 2-3 Two second limiting grooves are symmetrically opened on the inner wall of the square groove. A limiting strip 23 is slidably arranged inside the two second limiting grooves. The square rod 20 is fixedly connected to one side of the limiting strip 23.

[0047] The limiting strip 23 can be used to prevent the square rod 10 from sliding out of the square groove.

[0048] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for testing the tensile properties of hot-rolled ribbed steel bars, comprising a base (1), characterized in that, A first fixing block (2) is fixedly connected to the upper surface of the base (1). A movable plate (3) is slidably arranged on the upper surface of the base (1). A tension gauge (4) is fixedly connected to one side of the movable plate (3). The output end of the tension gauge (4) passes through one end of the movable plate (3) and is fixedly connected to a second fixing block (5). A cavity is opened inside the base (1). A first adjustment mechanism is arranged inside the cavity. The movable plate (3) moves through the first adjustment mechanism. A groove is opened on one side of both the first fixing block (2) and the second fixing block (5). A lower clamping plate (6) is fixedly connected to the lower surface inside the two grooves. Upper clamping plates (7) are slidably arranged above the interior of the grooves. The two upper clamping plates (7) and the corresponding lower clamping plates (6) together clamp the steel bar body (8). A slot is opened on one side of the two upper clamping plates (7) and the lower clamping plates (6). Each slot matches the steel bar body (8). A sliding groove is opened on the upper surface of the interior of the two grooves. A second adjustment mechanism is provided inside the two sliding grooves. The two upper clamping plates (7) are respectively adjusted by the corresponding second adjustment mechanism. A driving mechanism is provided above the first fixing block (2) and the second fixing block (5). The two second adjustment mechanisms match the driving mechanism.

2. The device for testing the tensile properties of hot-rolled ribbed steel bars according to claim 1, characterized in that, The first adjustment mechanism includes a first lead screw (9), a slider (10), and a first motor (11). The first lead screw (9) is rotatably connected to the inside of the cavity. The slider (10) is threaded onto the wall of the first lead screw (9). The upper end of the slider (10) penetrates the upper surface of the cavity and is fixedly connected to the lower surface of the moving plate (3). The first motor (11) is fixedly connected to one end of the base (1). One end of the first lead screw (9) penetrates one side of the cavity and is fixedly connected to the output end of the first motor (11).

3. The device for testing the tensile properties of hot-rolled ribbed steel bars according to claim 1, characterized in that, The second adjustment mechanism includes two second lead screws (12), two sleeves (13) and two first bevel gears (14). The two second lead screws (12) are rotatably connected to the inside of the corresponding slide grooves. The two sleeves (13) are threaded onto the rod walls of the second lead screws (12). The two sleeves (13) are fixedly connected to the upper surface of the corresponding upper clamping plate (7). The upper ends of the two second lead screws (12) penetrate the upper surface inside the slide grooves. The two first bevel gears (14) are fixedly sleeved onto the rod walls of the corresponding second lead screws (12).

4. The device for testing the tensile properties of hot-rolled ribbed steel bars according to claim 1, characterized in that, The drive mechanism includes two mounting plates (15), a first rotating rod (16), a second rotating rod (17), two second bevel gears (18), and a second motor (19). The two mounting plates (15) are respectively fixedly connected to the upper surfaces of the first fixing block (2) and the second fixing block (5). The first rotating rod (16) and the second rotating rod (17) are respectively rotatably connected to one side of the corresponding mounting plate (15). The two second bevel gears (18) are respectively fixedly sleeved on the rod wall of the corresponding first rotating rod (16) or the second rotating rod (17). The two second bevel gears (18) respectively mesh with the corresponding first bevel gear (14). The second motor (19) is fixedly connected to one side of the corresponding mounting plate (15). One end of the first rotating rod (16) passes through one side of the corresponding mounting plate (15) and is fixedly connected to the output end of the second motor (19).

5. The device for testing the tensile properties of hot-rolled ribbed steel bars according to claim 4, characterized in that, A square groove is provided at one end of the second rotating rod (17), and a square rod (20) is slidably arranged inside the square groove. The end of the square rod (20) away from the second rotating rod (17) is fixedly connected to one end of the first rotating rod (16).

6. The device for testing the tensile properties of hot-rolled ribbed steel bars according to claim 1, characterized in that, The interior of each of the two grooves is symmetrically provided with a first limiting groove, and a limiting block (21) is fixedly connected inside each of the first limiting grooves. Each limiting block (21) is fixedly connected to the outer surface of the corresponding sleeve (13).

7. The device for testing the tensile properties of hot-rolled ribbed steel bars according to claim 1, characterized in that, The upper surface of the cavity is provided with a strip-shaped hole, which matches the slider (10).

8. The device for testing the tensile properties of hot-rolled ribbed steel bars according to claim 1, characterized in that, Telescopic rods (22) are symmetrically fixedly connected between the movable plate (3) and the second fixed block (5).

9. The device for testing the tensile properties of hot-rolled ribbed steel bars according to claim 5, characterized in that, The inner wall of the square groove has two symmetrically opened second limiting grooves, and the two second limiting grooves are slidably provided with a limiting strip (23) inside. The square rod (20) is fixedly connected to one side of the limiting strip (23).

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