Fastening clamp for testing mechanical property of reinforcing steel bar

Abstract

The utility model relates to a fastening fixture for testing the mechanical property of a reinforcing steel bar, which comprises a fixed frame, a driving motor is fixedly mounted on the outer surface of the right side of the fixed frame, a bidirectional threaded rod is fixedly mounted at the output end of the driving motor, and two movable plates are mounted on the surface of the bidirectional threaded rod in a threaded manner. According to the fastening clamp for testing the mechanical property of the reinforcing steel bar, by arranging the rotary clamping assembly, when the reinforcing steel bar is clamped, the reinforcing steel bar is placed between two clamping rings, then two electric telescopic rods are started, the two electric telescopic rods drive two adjusting plates to move relatively, the two adjusting plates clamp the reinforcing steel bar through a push rod, a fixing block and the like, and therefore the reinforcing steel bar is clamped through the rotary clamping assembly; if small gaps exist between the two clamping rings and the reinforcing steel bar, the clamping plates can be attached to the reinforcing steel bar by rotating the limiting screw rods, so that the reinforcing steel bar is clamped more stably, and the two ends of the reinforcing steel bar can be clamped by rotating the clamping assemblies when a tensile test of the reinforcing steel bar is carried out.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a fastening fixture for testing the mechanical properties of steel bars. Background Technique

[0002] The mechanical properties of steel bars are measured through tests. The mechanical properties of steel bars refer to the laws of reaction and change when steel bars are subjected to forces, including the yield strength of steel bars, tensile strength, elongation of steel bars, bending strength of steel bars, etc. Detecting the mechanical properties of steel bars can effectively ensure the project quality and prevent the occurrence of safety accidents.

[0003] After retrieval, for example, a fastening fixture for testing the mechanical properties of steel bars provided by the Chinese utility model patent with the publication number of CN219737059U. Through relevant settings, this patent can stably clamp steel bars, thus having the effect of improving the accuracy of test data. However, this device has a single function and only has the clamping function for steel bars, resulting in the inability to improve its test efficiency. Therefore, a fastening fixture for testing the mechanical properties of steel bars is proposed. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a fastening fixture for testing the mechanical properties of steel bars that simultaneously has the functions of clamping and assisting in mechanical property detection.

[0005] To achieve the above object, the utility model provides the following technical solution: A fastening fixture for testing the mechanical properties of steel bars, including a fixed frame. A driving motor is fixedly installed on the outer surface of the right side of the fixed frame. A bidirectional threaded rod is fixedly installed at the output end of the driving motor. Two moving plates are threadedly installed on the surface of the bidirectional threaded rod. Rotating clamping assemblies are arranged on the tops of the two moving plates.

[0006] The rotating clamping assembly includes a rotating motor. The rotating motor is fixedly installed at the bottom of the moving plate. A rotating plate is fixedly installed at the output end of the rotating motor. Two vertical plates are fixedly installed on the top of the rotating plate. Electric telescopic rods are fixedly installed on the opposite sides of the two vertical plates. Adjusting plates are fixedly installed on the opposite sides of the two electric telescopic rods. Two fixing blocks are fixedly installed on the top of the rotating plate. Clamping rings are hinged on the front sides of the two fixing blocks. Chutes are opened on the front sides of the two clamping rings. Sliders are slidably installed in the two chutes. Fixing blocks are fixedly installed on the front sides of the two sliders. Push rods are fixedly installed on the opposite sides of the two adjusting plates. Limiting screws are threadedly connected near the middle positions inside the two clamping rings. Clamping plates are fixedly installed on the opposite sides of the two limiting screws.

[0007] Further, four supporting legs are fixedly installed at the bottom of the fixed frame. The bidirectional threaded rod is rotatably installed on the left inner wall of the fixed frame.

[0008] Further, a sliding rod is fixedly installed between the inner walls on the left and right sides of the fixed frame, and two moving plates are slidably installed on the surface of the sliding rod.

[0009] Further, the two push rods are respectively fixedly connected to the two fixed blocks, and rotating plates are fixedly installed on the separated sides of the two limit screws.

[0010] Further, two slide rails are provided at the top of the rotating plate, and two moving blocks are slidably installed in the two slide rails, and the two adjusting plates are respectively fixedly connected to the two moving blocks.

[0011] Further, two spring dampers are fixedly installed at the middle position of the top of the rotating plate, and a bearing plate is fixedly installed at the top of the two spring dampers.

[0012] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0013] For the fastening fixture for testing the mechanical properties of steel bars, by setting the rotary clamping assembly, when clamping the steel bar, place the steel bar between the two clamping rings, and then start the two electric telescopic rods. The two electric telescopic rods drive the two adjusting plates to move relatively. The two adjusting plates clamp the steel bar through push rods, fixed blocks, etc. If there are small gaps between the two clamping rings and the steel bar, the clamping plate can be made to fit the steel bar by rotating the limit screw, so that the clamping of the steel bar is more stable. When conducting the tensile test of the steel bar, the two ends of the steel bar can be clamped through the rotary clamping assembly respectively, and then start the driving motor. The driving motor drives the two moving plates to move relatively through the bidirectional threaded rod, and then the two moving plates can stretch the steel bar through the rotary clamping assembly, so as to assist in the tensile test. At the same time, two different steel bars can also be clamped through the two clamping rings respectively, and then start the rotating motor. The rotating motor drives the steel bar to rotate through the rotation of the rotating plate, so that the two steel bars are in contact, so as to detect the weldability of different positions of the two steel bars, which is practical. Description of the Drawings

[0014] Figure 1 is a three-dimensional view of the present utility model;

[0015] Figure 2 is a schematic diagram of the rotary clamping assembly of the present utility model;

[0016] Figure 3 is the present utility model Figure 2 The enlarged view at A in.

[0017] In the figure: 1. Fixed frame; 2. Support leg; 3. Driving motor; 4. Bi-directional threaded rod; 5. Moving plate; 6. Rotary clamping assembly; 601. Rotary motor; 602. Rotary plate; 603. Vertical plate; 604. Electric telescopic rod; 605. Adjusting plate; 606. Hinge support; 607. Clamping ring; 608. Chute; 609. Slide block; 610. Fixed block; 611. Push rod; 612. Limit screw rod; 613. Clamping plate. Detailed implementation manner

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-3 , a fastening fixture for testing the mechanical properties of steel bars in this embodiment includes a fixed frame 1. A driving motor 3 is fixedly installed on the outer surface of the right side of the fixed frame 1. The output end of the driving motor 3 is fixedly installed with a bi-directional threaded rod 4. Two moving plates 5 are threadedly installed on the surface of the bi-directional threaded rod 4. Rotary clamping assemblies 6 are arranged on the tops of the two moving plates 5.

[0020] The rotary clamping assembly 6 includes a rotary motor 601. The rotary motor 601 is fixedly installed at the bottom of the moving plate 5. The output end of the rotary motor 601 is fixedly installed with a rotary plate 602. Two vertical plates 603 are fixedly installed on the top of the rotary plate 602. Electric telescopic rods 604 are fixedly installed on the opposite sides of the two vertical plates 603. Adjusting plates 605 are fixedly installed on the opposite sides of the two electric telescopic rods 604. Two hinge supports 606 are fixedly installed on the top of the rotary plate 602. Clamping rings 607 are hinged on the front sides of the two hinge supports 606. Chutes 608 are opened on the front sides of the two clamping rings 607. Slide blocks 609 are slidably installed in the two chutes 608. Fixed blocks 610 are fixedly installed on the front sides of the two slide blocks 609. Push rods 611 are fixedly installed on the opposite sides of the two adjusting plates 605. Limit screw rods 612 are threadedly connected near the middle positions inside the two clamping rings 607. Clamping plates 613 are fixedly installed on the opposite sides of the two limit screw rods 612.

[0021] As Figure 1 shown, four support legs 2 are fixedly installed at the bottom of the fixed frame 1, and the four support legs 2 are used to support the fixed frame 1.

[0022] As Figure 1As shown, by fixedly installing sliding rods between the left and right side walls of the fixed frame 1, and slidably sleeving two moving plates 5 on the surfaces of the sliding rods, the two moving plates 5 can be stably slid horizontally by setting the sliding rods, and at the same time, it also plays a supporting role for the moving plates 5.

[0023] As Figure 2 shown Figure 3 As shown, the push rod 611 is fixedly connected to the fixed block 610. The push rod 611 drives the fixed block 610 and the slider 609 to slide in the chute 608, thereby driving the clamping ring 607 to clamp the steel bar. And by installing a rotating plate, it is convenient to rotate the two limit screws 612.

[0024] As Figure 2 As shown, two sliding rails are provided at the top of the rotating plate 602, and two moving blocks are slidably installed in the two sliding rails. The two adjusting plates 605 are respectively fixedly connected to the two moving blocks. Through this setting, the two adjusting plates 605 can be stably slid on the top of the rotating plate 602 without deviation.

[0025] As Figure 2 As shown, two spring dampers are fixedly installed at the middle position of the top of the rotating plate 602, and a bearing plate is fixedly installed at the tops of the two spring dampers. By setting the bearing plate, it can be used to bear the steel bar, and by setting the spring dampers for buffering, the weight borne by the rotating plate 602 is reduced.

[0026] During implementation, the operations are carried out according to the following steps:

[0027] 1) First, place the steel bar between the two clamping rings 607;

[0028] 2) Then start the two electric telescopic rods 604, and the two electric telescopic rods 604 drive the two adjusting plates 605 to move relatively;

[0029] 3) Then the two adjusting plates 605 clamp the steel bar through the push rod 611, the fixed block 610, etc.;

[0030] 4) Finally, if there are small gaps between the two clamping rings 607 and the steel bar, the clamping plate 613 can be made to fit the steel bar by rotating the limit screw 612.

[0031] In summary, for the fastening fixture for testing the mechanical properties of steel bars, by setting the rotary clamping assembly 6, when clamping the steel bar, place the steel bar between the two clamping rings 607, and then start the two electric telescopic rods 604. The two electric telescopic rods 604 drive the two adjusting plates 605 to move relatively. The two adjusting plates 605 clamp the steel bar through push rods 611, fixed blocks 610, etc. If there are slight gaps between the two clamping rings 607 and the steel bar, the clamping plate 613 can be made to fit the steel bar by rotating the limit screw 612, so that the clamping of the steel bar is more stable. When conducting the tensile test of the steel bar, the two ends of the steel bar can be clamped through the rotary clamping assembly 6 respectively. Then start the drive motor 3. The drive motor 3 drives the two moving plates 5 to move relatively through the bidirectional threaded rod 4. Then the two moving plates 5 can stretch the steel bar through the rotary clamping assembly 6, thus assisting in the tensile test. At the same time, two different steel bars can also be clamped through the two clamping rings 607 respectively. Then start the rotary motor 601. The rotary motor 601 drives the steel bar to rotate through the rotation of the rotating plate 602, so that the two steel bars are in contact, thereby detecting the weldability of different positions of the two steel bars, which has practicability.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fastening fixture for testing the mechanical properties of steel bars, comprising a fixing frame (1), characterized in that: A driving motor (3) is fixedly mounted on the right outer surface of the fixed frame (1); a bidirectional threaded rod (4) is fixedly mounted on the output end of the driving motor (3); two moving plates (5) are threadedly mounted on the surface of the bidirectional threaded rod (4); and a rotating clamping assembly (6) is disposed on the top of each of the two moving plates (5); The rotating clamping assembly (6) comprises a rotating motor (601), the rotating motor (601) is fixedly mounted on the bottom of the moving plate (5), a rotating plate (602) is fixedly mounted on the output end of the rotating motor (601), two vertical plates (603) are fixedly mounted on the top of the rotating plate (602), electric telescopic rods (604) are fixedly mounted on opposite sides of the two vertical plates (603), adjustment plates (605) are fixedly mounted on opposite sides of the two electric telescopic rods (604), two hinge supports (606) are fixedly mounted on the top of the rotating plate (602), and the two hinge supports (606) are fixedly mounted on the top of the rotating plate (602). The front side of the support (606) is hinged with a clamping ring (607), and the front sides of the two clamping rings (607) are provided with a sliding groove (608), and the two sliding grooves (608) are slidably installed with a slider (609), and the front sides of the two sliders (609) are fixedly installed with a fixed block (610), and the opposite side of the two adjustment plates (605) is fixedly installed with a push rod (611), and the inside of the two clamping rings (607) is threadedly connected with a limiting screw (612) near the middle position, and the opposite side of the two limiting screws (612) is fixedly installed with a clamping plate (613).

2. A fastening fixture for testing the mechanical properties of steel bars according to claim 1, characterized in that: Four supporting legs (2) are fixedly mounted on the bottom of the fixed frame (1), and the bidirectional threaded rod (4) is rotatably mounted on the inner left wall of the fixed frame (1).

3. A fastening fixture for testing the mechanical properties of steel bars according to claim 1, characterized in that: A sliding rod is fixedly installed between the inner walls on the left and right sides of the fixed frame (1), and two movable plates (5) are slidably installed on the surface of the sliding rod.

4. A fastening fixture for testing the mechanical properties of steel bars according to claim 1, characterized in that: The two push rods (611) are fixedly connected to the two fixed blocks (610) respectively, and a rotating plate is fixedly installed on the separated sides of the two limit screws (612).

5. The fastening fixture for testing the mechanical properties of steel bars according to claim 1, characterized in that: The rotating plate (602) is provided with two sections of slide rails on the top, and two moving blocks are slidably installed in the two sections of slide rails. The two adjusting plates (605) are fixedly connected to the two moving blocks respectively.

6. A fastening fixture for testing the mechanical properties of steel bars according to claim 1, characterized in that: Two spring dampers are fixedly mounted at the middle position of the top of the rotating plate (602), and a bearing plate is fixedly mounted on the top of the two spring dampers.

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