Steel strength detection device

Abstract

The utility model belongs to the technical field of steel detection, and particularly relates to a steel strength detection device which comprises a steel stretching detector and two groups of steel fixing clamps, the inner wall of each steel fixing clamp is fixedly connected with two symmetrically distributed steel clamping blocks, the side wall of one steel clamping block is slidably connected with a right trapezoid extrusion block, and the side wall of the other steel clamping block is slidably connected with a right trapezoid extrusion block. The top end of the right trapezoid extrusion block is fixedly connected with a pressing contact spring, a top supporting limiting plate is arranged above the pressing contact spring, and a pressure sensor is installed between the pressing contact spring and the top supporting limiting plate. The two sets of steel fixing clamps drive the steel clamping blocks to move so that the two ends of the steel can be clamped, stretching detection can be conducted on the steel, and when the steel is stretched, whether a steel bar and the steel clamping blocks displace or not can be detected in time by means of cooperation of a pressing contact spring, a top supporting limiting plate and a pressure sensor; therefore, a worker is prevented from reading and adopting error data to influence a detection result.

Description

Technical Field

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

[0002] Steels need to be sampled during both their production and use processes. The multiple data that need to be tested include the tensile strength of the steels. Current steel tensile testing devices clamp the two ends of the steel with a clamping mechanism, and then stretch the steel by moving the clamping mechanisms at both ends in opposite directions, to obtain data on displacement and force during the steel stretching process. However, during the stretching process, the steel needs to be displaced relative to the clamping mechanism, which will affect the accuracy of the data obtained by the steel tensile testing device. Utility Model Content

[0003] The utility model provides a steel material strength detection device, which has the characteristic of being able to timely detect the displacement of the steel material during the stretching process.

[0004] The utility model provides the following technical solutions: a steel strength detection device, including a steel tensile testing machine and two groups of steel fixing clamps, the inner wall of the steel fixing clamp is fixedly connected to two symmetrically distributed steel clamping blocks, one of the steel clamping blocks is slidably connected to a right-angled trapezoidal extrusion block on its side wall, a pressure-touch spring is fixedly connected to the top of the right-angled trapezoidal extrusion block, a top support limit plate is provided above the pressure-touch spring, and a pressure sensor is installed between the pressure-touch spring and the top support limit plate.

[0005] Among them, a clearance accommodating groove is opened on the inner side of the other steel clamping block, and the width of the clearance accommodating groove is greater than the width of the right-angle trapezoidal extrusion block and the top support limit plate.

[0006] Among them, a limiting guide slot is provided on the side wall of the steel clamping block close to the right-angled trapezoidal extrusion block, and a limiting slider is fixedly connected to the side wall of the right-angled trapezoidal extrusion block, and the limiting slider slides in the limiting guide slot.

[0007] Wherein, the inclined surface of the right-angle trapezoidal extrusion block is fixedly connected with a lubricating protective cushion layer which plays a protective role.

[0008] Wherein, a controller is installed on the steel tensile testing machine, and the controller is connected to the pressure sensor signal.

[0009] The beneficial effects of the present utility model are as follows: By driving the steel clamping blocks through two sets of steel fixing jigs, the two ends of the steel can be clamped and the steel can be subjected to tensile testing. When the steel is being stretched, with the cooperation of the pressing spring, the top support limiting plate, and the pressure sensor, it can be timely detected whether the steel bar and the steel clamping block are displaced, so as to prevent the staff from reading and adopting incorrect data, which may affect the test results. With the inclined surface of the right-angled trapezoidal extrusion block, automatic yielding and fitting can be carried out during the clamping process of the steel bar, making the device more convenient to use.

[0010] The parts not involved in this device are the same as the prior art or can be implemented using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is Figure 1 an enlarged view of part A in

[0013] Figure 3 is a schematic top view structure diagram of the yielding groove and the support plate in the present utility model.

[0014] In the figure: 1. Steel tensile testing machine; 11. Steel fixing jig; 2. Steel clamping block; 21. Yielding accommodation groove; 22. Limit guiding sliding groove; 3. Right-angled trapezoidal extrusion block; 31. Pressing spring; 32. Top support limiting plate; 33. Pressure sensor; 34. Limit sliding block; 35. Lubricating and protective cushion layer; 4. Controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Please refer to Figures 1-3 , the present utility model provides the following technical solutions: A steel strength testing device includes a steel tensile testing machine 1 and two sets of steel fixing jigs 11. Two symmetrically distributed steel clamping blocks 2 are fixedly connected to the inner wall of the steel fixing jig 11. A right-angled trapezoidal extrusion block 3 is slidably connected to the side wall of one of the steel clamping blocks 2. The top end of the right-angled trapezoidal extrusion block 3 is fixedly connected to a pressing spring 31. A top support limiting plate 32 is arranged above the pressing spring 31. A pressure sensor 33 is installed between the pressing spring 31 and the top support limiting plate 32.

[0016] In this embodiment: Before clamping the steel bar, the right-angled trapezoidal extrusion block 3 is in a low position under the elastic force of the pressure contact spring 31. Subsequently, the staff holds the steel bar and places it between the two steel clamping blocks 2. The steel fixing fixture 11 drives the steel clamping blocks 2 to clamp the steel bar. By driving the steel clamping blocks 2 to move through two groups of steel fixing fixtures 11, the two ends of the steel can be clamped and the steel can be subjected to tensile testing. During the clamping process, the steel fixing fixture 11 gradually squeezes the steel clamping blocks 2. The right-angled trapezoidal extrusion block 3 gradually moves vertically under the extrusion of the steel bar and the steel clamping blocks 2 until the steel bar moves to the bottom end of the right-angled trapezoidal extrusion block 3. Subsequently, the right-angled trapezoidal extrusion block 3 contacts the end of the steel bar under the elastic force of the pressure contact spring 31. When the steel is stretched and the steel bar and the steel clamping blocks 2 move relative to each other, the length of the pressure contact spring 31 changes, and the force exerted by the pressure contact spring 31 on the pressure sensor 33 changes. The staff can know that the steel bar and the steel clamping blocks 2 have relative displacement. With the cooperation of the pressure contact spring 31, the top support limiting plate 32 and the pressure sensor 33, it can be timely detected whether the steel bar and the steel clamping blocks 2 have displacement, so as to prevent the staff from reading and using incorrect data to affect the test results. With the help of the inclined surface of the right-angled trapezoidal extrusion block 3, automatic yielding and fitting can be carried out during the steel bar clamping process, making the device more convenient to use.

[0017] A yielding accommodation groove 21 is formed inside the other steel clamping block 2, and the width of the yielding accommodation groove 21 is greater than the widths of the right-angled trapezoidal extrusion block 3 and the top support limiting plate 32; by providing the yielding accommodation groove 21, the right-angled trapezoidal extrusion block 3, the pressure contact spring 31, the top support limiting plate 32 and the pressure sensor 33 can be yielded. When the two steel clamping blocks 2 clamp the steel bar, the right-angled trapezoidal extrusion block 3, the pressure contact spring 31, the top support limiting plate 32 and the pressure sensor 33 contract into the yielding accommodation groove 21, preventing the relative movement of the steel clamping blocks 2 from being blocked by the right-angled trapezoidal extrusion block 3, so that the two steel clamping blocks 2 can clamp thinner steel bars. The greater width of the yielding accommodation groove 21 can completely accommodate the right-angled trapezoidal extrusion block 3, the pressure contact spring 31, the top support limiting plate 32 and the pressure sensor 33, and the inner wall of the yielding accommodation groove 21 does not contact the right-angled trapezoidal extrusion block 3 and the top support limiting plate 32.

[0018] On the side wall of the steel clamping block 2 close to the right-angled trapezoidal extrusion block 3, a limiting and guiding sliding groove 22 is opened. On the side wall of the right-angled trapezoidal extrusion block 3, a limiting sliding block 34 is fixedly connected. The limiting sliding block 34 slides in the limiting and guiding sliding groove 22. By arranging the limiting and guiding sliding groove 22 and the limiting sliding block 34, it is convenient for the right-angled trapezoidal extrusion block 3 to slide on the side wall of the steel clamping block 2. When the right-angled trapezoidal extrusion block 3 is extruded by the steel, the right-angled trapezoidal extrusion block 3 can move in the vertical direction of the steel clamping block 2, avoiding the lateral swing of the right-angled trapezoidal extrusion block 3 from affecting the accuracy of the pressure detection by the pressure sensor 33.

[0019] On the inclined surface of the right-angled trapezoidal extrusion block 3, a lubricating and protective cushion layer 35 for protection is fixedly connected. By arranging the lubricating and protective cushion layer 35, the friction between the right-angled trapezoidal extrusion block 3 and the steel can be reduced, making the vertical movement of the right-angled trapezoidal extrusion block 3 smoother. Moreover, with the protection of the lubricating and protective cushion layer 35 for the right-angled trapezoidal extrusion block 3, scratches on the surface of the right-angled trapezoidal extrusion block 3 can be avoided.

[0020] A controller 4 is installed on the steel tensile testing machine 1. The controller 4 is in signal connection with the pressure sensor 33. When the steel clamping block 2 and the steel move relative to each other, the pressure sensor 33 transmits a signal to the controller 4, and the controller 4 controls the steel tensile testing machine 1 to stop stretching the steel. The data of this test is incorrect, and a re-test is carried out.

[0021] The working principle and usage process of the present utility model: Before clamping the steel bar, the right-angled trapezoidal extrusion block 3 is in a low position under the elastic force of the pressure contact spring 31. Then, the staff holds the steel bar and places it between the two steel clamping blocks 2. The steel fixing fixture 11 drives the steel clamping blocks 2 to clamp the steel bar. During the clamping process, the steel fixing fixture 11 gradually extrudes the steel clamping blocks 2, and the right-angled trapezoidal extrusion block 3 gradually moves vertically under the extrusion of the steel bar and the steel clamping blocks 2 until the steel bar moves to the bottom end of the right-angled trapezoidal extrusion block 3. Then, the right-angled trapezoidal extrusion block 3 contacts the end of the steel bar under the elastic force of the pressure contact spring 31. When stretching the steel, when the steel bar and the steel clamping block 2 move relative to each other, the length of the pressure contact spring 31 changes, and the force exerted by the pressure contact spring 31 on the pressure sensor 33 changes. The staff can know that there is a relative displacement between the steel bar and the steel clamping block 2. The pressure sensor 33 transmits a signal to the controller 4, and the controller 4 controls the steel tensile testing machine 1 to stop stretching the steel. The data of this test is incorrect, and a re-test is carried out.

Claims

1. A steel strength testing device, comprising a steel tensile testing machine (1) and two sets of steel fixing fixtures (11), characterized in that: The inner wall of the steel material fixing fixture (11) is fixedly connected to two symmetrically distributed steel material clamping blocks (2), one of the steel material clamping blocks (2) is slidably connected to a right-angled trapezoidal extrusion block (3) on its side wall, the top of the right-angled trapezoidal extrusion block (3) is fixedly connected to a pressure-contact spring (31), a top support limit plate (32) is provided above the pressure-contact spring (31), and a pressure sensor (33) is installed between the pressure-contact spring (31) and the top support limit plate (32).

2. A steel strength detection device according to claim 1, characterized in that: A clearance accommodating groove (21) is provided on the inner side of the other steel material clamping block (2), and the width of the clearance accommodating groove (21) is greater than the width of the right-angle trapezoidal extrusion block (3) and the top support limiting plate (32).

3. A steel strength detection device according to claim 1, characterized in that: A limit guide slot (22) is provided on the side wall of the steel clamping block (2) near the right-angle trapezoidal extrusion block (3), and a limit slider (34) is fixedly connected to the side wall of the right-angle trapezoidal extrusion block (3), and the limit slider (34) slides in the limit guide slot (22).

4. A steel strength detection device according to claim 1, characterized in that: The inclined surface of the right-angle trapezoidal extrusion block (3) is fixedly connected with a lubricating protective cushion layer (35) which plays a protective role.

5. A steel strength detection device according to claim 1, characterized in that: The steel material tensile testing machine (1) is equipped with a controller (4), and the controller (4) is signal-connected to the pressure sensor (33).

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