Reinforcing steel bar strength detection device

Abstract

The utility model relates to the technical field of engineering detection devices, and discloses a reinforcing steel bar strength detection device which comprises a reinforcing steel bar tension tester, the line drawing scale assembly comprises a rectangular column and a cylindrical rod, one side of the cylindrical rod is fixedly connected with a first rectangular plate, line drawing units distributed at equal intervals are arranged on the first rectangular plate, and each line drawing unit comprises a painting brush; and the pushing assembly comprises a rack, and the rack and one end of the cylindrical rod are jointly connected with a second rectangular plate. By arranging the line drawing scale assembly, equal-interval mark points are drawn on the outer wall face of the reinforcing steel bar to form scales before the reinforcing steel bar is subjected to tensile detection, the strain and the elongation of the reinforcing steel bar can be accurately measured and calculated in the tensile test process, and then the accuracy of a test result is guaranteed; the paintbrushes can stretch out and draw back in the sleeve cavities, it is ensured that each paintbrush can make contact with the outer wall face of the steel bar, and equal-interval marking on the steel bar is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering detection devices, in particular to a device for detecting the strength of steel bars. Background Art

[0002] In construction projects, it is necessary to detect the strength of the steel bars used to check whether the various parameters meet the national standards, so as to ensure the project quality. The commonly used detection device is a steel bar tensile testing machine.

[0003] The prior art discloses a steel bar tensile testing machine (CN207396220U), which includes an upper fixture base, a tapered chuck with a large upper part and a small lower part, a base, a moving plate, and a lower fixture fixed on the upper part of the moving plate. The upper fixture base is provided with a tapered through hole with a large upper part and a small lower part. Three chucks enclose a circle and are installed in the tapered through hole of the upper fixture base. A hole for the steel bar to pass through is provided at the center of the three chucks. The base is located below the upper fixture base, and the moving plate is located between the base and the upper fixture base. A vertical support frame is also provided between the base and the upper fixture base. This device can better clamp the steel bars and has a higher safety factor when in use.

[0004] The prior art discloses a steel bar strength detector (publication number: CN219224409U), which includes a fixed seat. An installation groove is opened in the middle of the bottom of the fixed seat, and a fixed rod is connected between the inner walls of the installation groove. Two driving blocks are symmetrically and slidably sleeved on both sides of the surface of the fixed rod, and the driving blocks are slidably connected to the groove wall of the installation groove. In order to improve the detection efficiency, this technology sets a punching mechanism to punch the steel bars at equal intervals. However, the punching method will change the tensile strength and yield strength of the steel bars, and thus the detected data is not accurate.

[0005] Therefore, on the basis of the prior art, this application is improved and proposes a device for detecting the strength of steel bars to solve the problems raised in the above background art. Summary of the Utility Model

[0006] The utility model mainly solves the technical problem that the prior art marks the steel bars by punching, which causes changes in the tensile strength and yield strength of the steel bars, and provides a device for detecting the strength of steel bars.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A steel bar strength detection device, which includes: a steel bar tensile testing machine placed on the ground for clamping both ends of the steel bar and then stretching to detect the yield strength and ultimate strength of the steel bar; a line marking scale component arranged on one side of the steel bar tensile testing machine for making equally spaced marks on the outer wall surface of the steel bar. The line marking scale component includes a rectangular column and a cylindrical rod movably penetrating the rectangular column. One side of the cylindrical rod close to the steel bar tensile testing machine is fixedly connected with a first rectangular plate. The first rectangular plate is provided with equally spaced line marking units, and each line marking unit includes a paintbrush; a pushing component arranged between the rectangular column and the cylindrical rod for pushing the cylindrical rod closer to the steel bar. The pushing component includes a rack movably penetrating the rectangular column. One end of the rack and the cylindrical rod are jointly connected with a second rectangular plate, and the rack drives the cylindrical rod to move synchronously during the movement process.

[0009] According to the steel bar strength detection device described above, the bottom end of the rectangular column is fixedly connected with a bottom plate, and the bottom plate is arranged on the outer wall surface of one side of the steel bar tensile testing machine.

[0010] According to the steel bar strength detection device described above, the number of the cylindrical rods is two. Both cylindrical rods movably penetrate the rectangular column. One side wall surface of the first rectangular plate is fixedly connected with the two cylindrical rods. The two cylindrical rods are in a parallel state with each other. One end of the two cylindrical rods far away from the first rectangular plate is fixedly connected with the second rectangular plate, and the rack is located between the two cylindrical rods.

[0011] According to the steel bar strength detection device described above, the pushing component further includes two assembly mounting plates fixedly installed on one side of the rectangular column. A rotating shaft is rotatably connected between the two assembly mounting plates. On the outer wall surface of one assembly mounting plate, a servo motor is fixedly installed. The output shaft of the servo motor movably penetrates the assembly mounting plate and is fixedly connected with one end of the rotating shaft.

[0012] According to the steel bar strength detection device described above, the rotating shaft is fixedly penetrated with a gear, and the gear is movably engaged with the rack. The rotation of the gear drives the rack to move.

[0013] According to the steel bar strength detection device described above, each line marking unit further includes a sleeve. The number of the sleeves corresponds one by one to the number of the paintbrushes. A plurality of sleeves are fixedly installed on the side wall surface of the first rectangular plate close to the steel bar at equal intervals.

[0014] According to the steel bar strength detection device described above, a limiting groove is penetrated and opened on the outer wall surface of the sleeve. A compression spring is arranged in the cavity of the sleeve. A limiting block is fixedly connected to the outer wall surface of the paintbrush in the cavity of the sleeve. The limiting block is movably clamped in the corresponding limiting groove. The compression spring is located between the paintbrush and the first rectangular plate. One end of the paintbrush close to the steel bar is conical.

[0015] The present utility model provides a steel bar strength detection device. It has the following beneficial effects:

[0016] (1) By setting a line-drawing scale component on one side of the steel bar tensile testing machine, equally spaced punctuation marks are drawn on the outer wall of the steel bar before tensile testing to form scales, which helps to accurately measure and calculate the strain and elongation rate of the steel bar during the tensile test, thereby ensuring the accuracy of the test results. Since the outer wall of the steel bar is uneven, a pushing component is set to push the line-drawing unit to move, and the paintbrush can be telescoped in the sleeve cavity to ensure that each paintbrush can contact the outer wall of the steel bar, completing the equally spaced marking of the steel bar, and improving the practicality of the device through reasonable structural design.

[0017] (2) During operation, the servo motor drives the rotating shaft to rotate. The rotating shaft fixedly penetrates the gear, and the gear meshes with the rack movably. One end of the rack is fixedly connected to the second rectangular plate, and the other end of the rack movably penetrates the rectangular column. Thus, the movement of the rack drives the second rectangular plate and the two cylindrical rods to move as a whole, and further drives the first rectangular plate and the line-drawing unit to move as a whole. An assembly mounting plate is set on one side of the rectangular column to facilitate the installation of the servo motor and the rotating shaft. The servo motor drives the rotating shaft to rotate forward and backward to complete the line-drawing and scaling work of the steel bar.

[0018] (3) The sleeve is fixedly installed on one side wall of the first rectangular plate. A limiting groove is opened on the outer wall of the sleeve. One end of the paintbrush in the sleeve cavity is fixedly connected to a limiting block, and the limiting block is movably clamped in the corresponding limiting groove. When the paintbrush touches the steel bar and is blocked, the limiting block moves along the direction of the limiting groove, and the tip of the paintbrush leaves a dot on the steel bar. By setting a compression spring in the sleeve cavity, it plays a role in resetting the paintbrush. Description of the Drawings

[0019] Figure 1 Front view schematic diagram of a steel bar strength detection device of the present utility model;

[0020] Figure 2 Three-dimensional structure schematic diagram of a steel bar strength detection device of the present utility model;

[0021] Figure 3 Three-dimensional structure schematic diagram of the line-drawing scale component of a steel bar strength detection device of the present utility model;

[0022] Figure 4 Three-dimensional structure schematic diagram of the pushing component of a steel bar strength detection device of the present utility model;

[0023] Figure 5 Schematic diagram of the connection relationship between the paintbrush and the sleeve of a steel bar strength detection device of the present utility model;

[0024] Figure 6The utility model is a schematic diagram of the connection relationship between the compression spring in the cut-away cavity of a sleeve of a steel bar strength detection device and a paintbrush.

[0025] Legend:

[0026] 10. Steel bar tensile testing machine; 11. Marking scale assembly; 12. Rectangular column; 13. Bottom plate; 14. Cylindrical rod; 15. First rectangular plate; 16. Second rectangular plate; 17. Marking unit; 18. Rack; 19. Gear; 20. Rotating shaft; 21. Assembly mounting plate; 22. Servo motor; 23. Sleeve; 24. Paintbrush; 25. Limiting groove; 26. Limiting block; 27. Compression spring. DETAILED DESCRIPTION

[0027] like Figure 1-6 As shown: a steel bar strength detection device, comprising: a steel bar tensile testing machine 10, the steel bar tensile testing machine 10 is placed on the ground and is used to clamp the two ends of the steel bar and then stretch it to detect the yield strength and ultimate strength of the steel bar; a line marking scale assembly 11, the line marking scale assembly 11 is arranged on one side of the steel bar tensile testing machine 10 and is used to mark the outer wall surface of the steel bar at equal intervals, the line marking scale assembly 11 includes a rectangular column 12 and a cylindrical rod 14 that movably penetrates the rectangular column 12, and the cylindrical rod 14 is close to the steel bar tensile testing machine A first rectangular plate 15 is fixedly connected to one side of the machine 10, and drawing units 17 are arranged on the first rectangular plate 15 with equal intervals. The drawing units 17 include a paintbrush 24; a pushing component is arranged between the rectangular column 12 and the cylindrical rod 14 to push the cylindrical rod 14 close to the steel bar. The pushing component includes a rack 18 that movably penetrates the rectangular column 12. The rack 18 and one end of the cylindrical rod 14 are commonly connected to a second rectangular plate 16. The rack 18 synchronously drives the cylindrical rod 14 to move during the movement.

[0028] It is worth noting that the steel bar tensile testing machine 10 is a device for detecting the tensile strength and yield strength of steel bars. A steel bar tensile testing machine 10 in the prior art (publication number: CN207396220U) has been disclosed and will not be described in detail here.

[0029] Specifically, by setting a line drawing scale component 11 on one side of the steel bar tensile testing machine 10, evenly spaced marks are drawn on the outer wall surface of the steel bar before the tensile test to form a scale, which helps to accurately measure and calculate the strain and elongation of the steel bar during the tensile test, thereby ensuring the accuracy of the test results. Since the outer wall surface of the steel bar is uneven, the line drawing unit 17 is pushed to move by setting a pushing component, and the brush 24 is retractable in the cavity of the sleeve 23, ensuring that each brush 24 can contact the outer wall surface of the steel bar, completing the evenly spaced marking of the steel bar, and improving the practicality of the device through reasonable structural design.

[0030] The bottom end of the rectangular column 12 is fixedly connected with a bottom plate 13, and the bottom plate 13 is arranged on the outer wall surface of one side of the steel bar tensile testing machine 10.

[0031] Specifically, the rectangular column 12 is connected to the steel bar tensile testing machine 10 by setting the bottom plate 13.

[0032] The number of the cylindrical rods 14 is two. The two cylindrical rods 14 both movably penetrate through the rectangular column 12. One side wall surface of the first rectangular plate 15 is fixedly connected with the two cylindrical rods 14. The two cylindrical rods 14 are in a parallel state with each other. The ends of the two cylindrical rods 14 away from the first rectangular plate 15 are fixedly connected with the second rectangular plate 16. The rack 18 is located between the two cylindrical rods 14.

[0033] Specifically, the number of the cylindrical rods 14 is set to be two. The two cylindrical rods 14 both movably penetrate through the rectangular column 12. One end of the two cylindrical rods 14 is jointly connected to the first rectangular plate 15, and the other end of the two cylindrical rods 14 is jointly connected to the second rectangular plate 16. The cylindrical rods 14, the first rectangular plate 15 and the second rectangular plate 16 form a framework, improving the stability of the device.

[0034] The pushing assembly further includes two assembly mounting plates 21 fixedly installed on one side of the rectangular column 12. A rotating shaft 20 is rotatably connected between the two assembly mounting plates 21. A servo motor 22 is fixedly installed on the outer wall surface of one side of one assembly mounting plate 21. The output shaft of the servo motor 22 movably penetrates through the assembly mounting plate 21 and is fixedly connected to one end of the rotating shaft 20. The rotating shaft 20 is fixedly penetrated with a gear 19. The gear 19 is movably meshed with the rack 18. The rotation of the gear 19 drives the rack 18 to move.

[0035] Specifically, during the work, the servo motor 22 drives the rotating shaft 20 to rotate. The rotating shaft 20 is fixedly penetrated with the gear 19. The gear 19 is movably meshed with the rack 18. One end of the rack 18 is fixedly connected to the second rectangular plate 16. The other end of the rack 18 movably penetrates through the rectangular column 12. Thus, the movement of the rack 18 drives the second rectangular plate 16 and the two cylindrical rods 14 as a whole to move, and further drives the first rectangular plate 15 and the line-drawing unit 17 as a whole to move. The assembly mounting plate 21 is arranged on one side of the rectangular column 12, facilitating the installation of the servo motor 22 and the rotating shaft 20. The servo motor 22 drives the rotating shaft 20 to rotate forward and backward to complete the line-drawing and scaling work of the steel bar.

[0036] The line-drawing unit 17 further includes sleeves 23, the number of the sleeves 23 corresponding one-to-one to the number of the paintbrushes 24. A plurality of sleeves 23 are fixedly installed at equal intervals on the side wall surface of the first rectangular plate 15 close to the steel bar, and the sleeves 23 are hollow. A limiting groove 25 is formed through the outer wall surface of the sleeve 23. A compression spring 27 is arranged in the cavity of the sleeve 23. A limiting block 26 is fixedly connected to the outer wall surface of the paintbrush 24 in the cavity of the sleeve 23. The limiting block 26 is movably engaged in the corresponding limiting groove 25. The compression spring 27 is located between the paintbrush 24 and the first rectangular plate 15. One end of the paintbrush 24 close to the steel bar is conical.

[0037] Specifically, the sleeve 23 is fixedly installed on the side wall surface of the first rectangular plate 15. The limiting groove 25 is formed on the outer wall surface of the sleeve 23. One end of the paintbrush 24 in the cavity of the sleeve 23 is fixedly connected with the limiting block 26. The limiting block 26 is movably engaged in the corresponding limiting groove 25. When the paintbrush 24 touches the steel bar and is blocked, the limiting block 26 moves along the direction of the limiting groove 25, and the tip of the paintbrush 24 leaves a marking point on the steel bar. By arranging the compression spring 27 in the cavity of the sleeve 23, the paintbrush 24 can be reset.

[0038] The working principle of a steel bar strength detection device of the present application is as follows: Before the tensile test of the steel bar, equally spaced punctuation marks are drawn on its outer wall surface to form scales, which helps to accurately measure and calculate the strain and elongation rate of the steel bar during the tensile test, thereby ensuring the accuracy of the test results. During the work, the servo motor 22 drives the rotating shaft 20 to rotate. The rotating shaft 20 fixedly penetrates the gear 19. The gear 19 is movably engaged with the rack 18. One end of the rack 18 is fixedly connected with the second rectangular plate 16. The other end of the rack 18 movably penetrates the rectangular column 12. Thus, the movement of the rack 18 drives the second rectangular plate 16 and the two cylindrical rods 14 to move as a whole, and further drives the first rectangular plate 15 and the line-drawing unit 17 to move as a whole. The sleeve 23 is fixedly installed on the side wall surface of the first rectangular plate 15. The limiting groove 25 is formed on the outer wall surface of the sleeve 23. One end of the paintbrush 24 in the cavity of the sleeve 23 is fixedly connected with the limiting block 26. The limiting block 26 is movably engaged in the corresponding limiting groove 25. When the paintbrush 24 touches the steel bar and is blocked, the limiting block 26 moves along the direction of the limiting groove 25, and the tip of the paintbrush 24 leaves a marking point on the steel bar, completing the work of drawing scales on the steel bar.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A steel bar strength detection device, characterized in that: include: A steel bar tensile testing machine (10), the steel bar tensile testing machine (10) being placed on the ground and used to clamp both ends of a steel bar and then perform tensile testing on the steel bar to test its yield strength and ultimate strength; A line drawing scale assembly (11), the line drawing scale assembly (11) is arranged on one side of a steel bar tensile testing machine (10) and is used to mark the outer wall surface of the steel bar at equal intervals, the line drawing scale assembly (11) comprises a rectangular column (12) and a cylindrical rod (14) movably penetrating the rectangular column (12), a first rectangular plate (15) is fixedly connected to the side of the cylindrical rod (14) close to the steel bar tensile testing machine (10), and the first rectangular plate (15) is provided with line drawing units (17) distributed at equal intervals, and the line drawing unit (17) comprises a paintbrush (24); A pushing assembly is provided between a rectangular column (12) and a cylindrical rod (14) and is used to push the cylindrical rod (14) close to a steel bar. The pushing assembly comprises a rack (18) movably penetrating the rectangular column (12). One end of the rack (18) and the cylindrical rod (14) are commonly connected to a second rectangular plate (16). The rack (18) synchronously drives the cylindrical rod (14) to move during the movement.

2. The steel bar strength detection device according to claim 1, characterized in that: The bottom end of the rectangular column (12) is fixedly connected to a bottom plate (13), and the bottom plate (13) is arranged on an outer wall surface of one side of the steel bar tensile testing machine (10).

3. The steel bar strength detection device according to claim 1, characterized in that: The number of the cylindrical rods (14) is two, and the two cylindrical rods (14) are both movable and penetrate the rectangular column (12); a side wall surface of the first rectangular plate (15) is fixedly connected to the two cylindrical rods (14); the two cylindrical rods (14) are parallel to each other; one end of the two cylindrical rods (14) away from the first rectangular plate (15) is fixedly connected to the second rectangular plate (16); and the rack (18) is located between the two cylindrical rods (14).

4. The steel bar strength detection device according to claim 1, characterized in that: The pushing assembly also includes two assembly mounting plates (21) fixedly mounted on one side of the rectangular column (12), a rotating shaft (20) being rotatably connected between the two assembly mounting plates (21), a servo motor (22) being fixedly mounted on an outer wall surface of one side of one assembly mounting plate (21), and an output shaft of the servo motor (22) movably passes through the assembly mounting plate (21) and is fixedly connected to one end of the rotating shaft (20).

5. The steel bar strength detection device according to claim 4, characterized in that: The rotating shaft (20) is fixedly penetrated by a gear (19), the gear (19) is movably meshed with the rack (18), and the gear (19) rotates to drive the rack (18) to move.

6. The steel bar strength detection device according to claim 1, characterized in that: The line drawing unit (17) further comprises sleeves (23), the number of the sleeves (23) corresponds to the number of the brushes (24), and the plurality of sleeves (23) are fixedly mounted at equal intervals on a side wall of the first rectangular plate (15) close to the steel bars.

7. The steel bar strength detection device according to claim 6, characterized in that: The outer wall surface of the sleeve (23) is provided with a limit groove (25), and a compression spring (27) is arranged in the cavity of the sleeve (23). The outer wall surface of the paintbrush (24) is fixedly connected to a limit block (26) in the cavity of the sleeve (23), and the limit block (26) is movably engaged in the corresponding limit groove (25). The compression spring (27) is located between the paintbrush (24) and the first rectangular plate (15), and the end of the paintbrush (24) close to the steel bar is tapered.

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