Clamping structure for building steel bar tensile test

Abstract

The utility model discloses a clamping structure for building reinforcement tensile test, which comprises a mounting rack, the top of the mounting rack is provided with a mounting groove, the back of the mounting groove is provided with a threaded rod in a penetrating manner, the mounting groove is in threaded connection with the threaded rod, and the front of the threaded rod is fixedly connected with a fixing head. And two symmetrical clamping blocks are arranged in an inner cavity of the mounting groove. The shifting plate is shifted to drive the sliding block to slide towards the direction of the fixing block, so that the spring is extruded to contract, when the sliding block enters the inner cavity of the sliding groove, the clamping block can be detached and replaced, the shifting plate is loosened, the spring is stretched, the spring pushes the sliding block to reach the top of the replaced clamping block, and the clamping block is replaced. Therefore, the wedge-shaped block in the wedge-shaped clamp can be limited through the limiting structure, the situation that a user needs to limit and fix the wedge-shaped block in the wedge-shaped clamp through a bolt and a clamping piece is avoided, and the purpose of improving the wedge-shaped block replacement efficiency is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of tensile testing technology for building steel bars, and in particular relates to a clamping structure for tensile testing of building steel bars. Background Technology

[0002] Tensile testing fixtures for reinforcing bars are important testing equipment used to fix reinforcing bar specimens, ensuring uniform stress during tensile testing and accurate measurement of the reinforcing bar's mechanical properties. Tensile testing fixtures for reinforcing bars are broadly classified into wedge fixtures, hydraulic fixtures, and combination fixtures. Wedge fixtures primarily utilize the inclined surface of wedge blocks; when tensile force is applied, the wedge blocks automatically tighten, firmly clamping the reinforcing bar. They are simple in structure, easy to operate, and provide strong clamping force, effectively preventing slippage of the reinforcing bar during tensile testing. Furthermore, when dealing with different types of reinforcing bars, the wedge blocks can be removed and replaced, facilitating clamping tests on different types of reinforcing bars.

[0003] Currently, most tensile tests on building steel bars use wedge clamps to hold the steel bars. When clamping different types of steel bars, the user needs to remove and replace the wedge blocks in the wedge clamp. The wedge blocks in the wedge clamp are mostly fixed by bolts and clips, which is quite troublesome to remove and replace. Therefore, there is a need for a clamping structure for tensile tests on building steel bars that can limit the wedge blocks in the wedge clamp through a limiting structure, avoiding the need for the user to limit and fix the wedge blocks in the wedge clamp with bolts and clips, thus improving the efficiency of wedge block replacement. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping structure for tensile testing of building steel bars, which can limit the wedge block in the wedge clamp through the limiting structure, avoiding the need for the user to limit and fix the wedge block in the wedge clamp with bolts and clips, thereby improving the efficiency of wedge block replacement and solving the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A clamping structure for tensile testing of building steel bars includes a mounting frame. The top of the mounting frame is provided with a mounting groove. A threaded rod is provided through the back of the mounting groove. The mounting groove is threadedly connected to the threaded rod. A fixing head is fixedly connected to the front of the threaded rod. Two symmetrical clamping blocks are provided in the inner cavity of the mounting groove. A slot is provided on the opposite side of each of the two clamping blocks. The threaded rod is adapted to the slot. Two symmetrical sliding grooves are provided on the top of the mounting frame. A slider is slidably connected to the inner cavity of the sliding groove. A groove is provided on the opposite side of each of the two sliders. A fixing block is slidably connected to the inner cavity of the groove. The side of the fixing block away from the slider is fixedly connected to the inner wall of the sliding groove. A sliding rod is fixedly connected to the inner cavity of the groove. The sliding rod passes through the fixing block and is slidably connected to the fixing block. A spring is provided on the surface of the sliding rod. One end of the spring is fixedly connected to the fixing block, and the other end of the spring is fixedly connected to the inner wall of the groove.

[0006] Preferably, a lever plate is fixedly connected to the top of the slider. The lever plate is L-shaped and its surface is provided with anti-slip texture.

[0007] Preferably, a fixing collar is fixedly connected to the surface of the threaded rod, and two symmetrical rotating rods are fixedly connected to the surface of the fixing collar.

[0008] Preferably, the opposite sides of the two clamping blocks are both inclined surfaces, and the opposite sides of the two clamping blocks are provided with anti-slip textures.

[0009] Preferably, the front and back sides of the inner cavity of the slide groove are provided with limiting grooves, and the front and back sides of the slider are fixedly connected with limiting strips, and the limiting grooves are adapted to the limiting strips.

[0010] Preferably, the fixing block is T-shaped, the slider is located above the clamping block, and the end of the rotating rod away from the fixing collar is hemispherical.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model uses a lever to move a slider towards a fixed block, causing the spring to be compressed and contracted. When the slider enters the inner cavity of the groove, the clamping block can be removed and replaced. Releasing the lever allows the spring to extend, pushing the slider to the top of the replaced clamping block. This achieves the purpose of limiting the wedge block in the wedge clamp through a limiting structure, avoiding the need for the user to limit and fix the wedge block in the wedge clamp with bolts and clips, thus improving the efficiency of wedge block replacement.

[0013] 2. By setting up a baffle plate, when the slider is disengaged from the inner cavity of the slide groove, the baffle plate will block the slide groove from above, preventing dust from entering the inner cavity of the slide groove and ensuring the smoothness of the slider sliding in the inner cavity of the slide groove. Attached Figure Description

[0014] in:

[0015] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0016] Figure 2 This is a three-dimensional disassembled schematic diagram of one embodiment of the present utility model;

[0017] Figure 3 This is a top view schematic diagram of one embodiment of the present utility model;

[0018] Figure 4 This is a three-dimensional disassembled schematic diagram of a limiting structure according to an embodiment of the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Mounting bracket, 2. Mounting groove, 3. Threaded rod, 4. Fixing head, 5. Clamping block, 6. Slot, 7. Slide groove, 8. Slider, 9. Groove, 10. Fixing block, 11. Slide rod, 12. Spring, 13. Pulley, 14. Fixing collar, 15. Rotating rod. Detailed Implementation

[0021] In the following description, embodiments of the clamping structure for tensile testing of reinforcing steel bars of this utility model will be described with reference to the accompanying drawings.

[0022] Example 1:

[0023] Figure 1-4This invention illustrates a clamping structure for tensile testing of reinforcing steel bars in construction, comprising a mounting frame 1. The top of the mounting frame 1 has a mounting groove 2. A threaded rod 3 is threaded through the back of the mounting groove 2. A fixing collar 14 is fixedly connected to the surface of the threaded rod 3. Two symmetrical rotating rods 15 are fixedly connected to the surface of the fixing collar 14. The mounting groove 2 is threadedly connected to the threaded rod 3. A fixing head 4 is fixedly connected to the front of the threaded rod 3. Two symmetrical clamping blocks 5 are provided in the inner cavity of the mounting groove 2. The opposite sides of the two clamping blocks 5 are both inclined surfaces. Anti-slip textures are provided on the opposite sides of the two clamping blocks 5. A slot 6 is provided on the opposite side of each clamping block 5. The threaded rod 3 is adapted to the slot 6. Two symmetrical sliding grooves 7 are provided on the top of the mounting frame 1. A slider 8 is slidably connected to the inner cavity of the sliding groove 7. A lever 13 is fixedly connected to the top. The lever 13 is L-shaped and has anti-slip texture on its surface. When the slider 8 is disengaged from the inner cavity of the slide groove 7, the lever 13 will block the slide groove 7 from above, preventing dust from entering the inner cavity of the slide groove 7 and ensuring the smooth sliding of the slider 8 in the inner cavity of the slide groove 7. A groove 9 is provided on the opposite side of the two sliders 8. A fixing block 10 is slidably connected to the inner cavity of the groove 9. The side of the fixing block 10 away from the slider 8 is fixedly connected to the inner wall of the slide groove 7. A slide rod 11 is fixedly connected to the inner cavity of the groove 9. The slide rod 11 passes through the fixing block 10 and is slidably connected to the fixing block 10. A spring 12 is provided on the surface of the slide rod 11. One end of the spring 12 is fixedly connected to the fixing block 10, and the other end of the spring 12 is fixedly connected to the inner wall of the groove 9.

[0024] Example 2:

[0025] Figure 1-4This invention illustrates a clamping structure for tensile testing of reinforcing steel bars in construction, comprising a mounting frame 1. The top of the mounting frame 1 has a mounting groove 2, and a threaded rod 3 is threaded through the back of the mounting groove 2. The mounting groove 2 is threadedly connected to the threaded rod 3. A fixing head 4 is fixedly connected to the front of the threaded rod 3. Two symmetrical clamping blocks 5 are provided inside the mounting groove 2, and slots 6 are provided on opposite sides of each clamping block 5. The threaded rod 3 is adapted to the slots 6. Two symmetrical sliding grooves 7 are provided on the top of the mounting frame 1. Limiting grooves are provided on both the front and back of the inner cavity of the sliding grooves 7. Limiting strips are fixedly connected to both the front and back of the sliding blocks 8, and the limiting grooves and limiting strips are aligned. The inner cavity of the slide groove 7 is slidably connected to a slider 8. Each of the two sliders 8 has a groove 9 on its opposite side. The inner cavity of the groove 9 is slidably connected to a fixing block 10, which is T-shaped. The slider 8 is located above the clamping block 5. The end of the rotating rod 15 away from the fixing collar 14 is hemispherical. The side of the fixing block 10 away from the slider 8 is fixedly connected to the inner wall of the slide groove 7. The inner cavity of the groove 9 is fixedly connected to a slide rod 11, which passes through the fixing block 10 and is slidably connected to the fixing block 10. A spring 12 is provided on the surface of the slide rod 11. One end of the spring 12 is fixedly connected to the fixing block 10, and the other end of the spring 12 is fixedly connected to the inner wall of the groove 9.

[0026] Working principle: When using this utility model, the user moves the lever 13, causing the lever 13 to drive the slider 8 into the inner cavity of the slide groove 7. At this time, the slide rod 11 will slide in the inner cavity of the fixed block 10, causing the spring 12 to contract under the pressure of the slider 8. When the slider 8 is fully inside the inner cavity of the slide groove 7, the clamping block 5 in the inner cavity of the mounting groove 2 can be removed and replaced. The replaced clamping block 5 enters the inner cavity of the mounting groove 2, and the slot 6 engages with the fixed head 4. The lever 13 is released, causing the spring 12 to extend, so that the spring 12 pushes the slider 8 to the top of the replaced clamping block 5, limiting the clamping block 5. This avoids the need for the user to limit and fix the wedge block in the wedge clamp with bolts and clamps, thus improving the efficiency of wedge block replacement.

[0027] In summary, this clamping structure for tensile testing of building steel bars, by moving the lever 13, causes the slider 8 to slide towards the fixed block 10, which compresses the spring 12. When the slider 8 enters the inner cavity of the groove 7, the clamping block 5 can be removed and replaced. Releasing the lever 13 allows the spring 12 to extend, pushing the slider 8 to the top of the replaced clamping block 5. This achieves the goal of limiting the wedge block in the wedge clamp through the limiting structure, avoiding the need for the user to limit and fix the wedge block in the wedge clamp with bolts and clips, thus improving the efficiency of wedge block replacement.

Claims

1. A clamping structure for tensile testing of reinforcing steel bars in buildings, characterized in that, The system includes a mounting bracket (1), with a mounting groove (2) on its top. A threaded rod (3) is threaded through the back of the mounting groove (2). The mounting groove (2) is threadedly connected to the threaded rod (3). A fixing head (4) is fixedly connected to the front of the threaded rod (3). The inner cavity of the mounting groove (2) is provided with two symmetrical clamping blocks (5). Each clamping block (5) has a slot (6) on its opposite side. The threaded rod (3) is adapted to the slot (6). The top of the mounting bracket (1) has two symmetrical sliding grooves (7). A slider is slidably connected to the inner cavity of the sliding grooves (7). 8) Each of the two sliders (8) has a groove (9) on one side facing away from each other. A fixing block (10) is slidably connected to the inner cavity of the groove (9). The side of the fixing block (10) away from the slider (8) is fixedly connected to the inner wall of the slide groove (7). A sliding rod (11) is fixedly connected to the inner cavity of the groove (9). The sliding rod (11) passes through the fixing block (10) and is slidably connected to the fixing block (10). A spring (12) is provided on the surface of the sliding rod (11). One end of the spring (12) is fixedly connected to the fixing block (10), and the other end of the spring (12) is fixedly connected to the inner wall of the groove (9).

2. The clamping structure for tensile testing of reinforcing steel bars in construction according to claim 1, characterized in that, The top of the slider (8) is fixedly connected to a dial plate (13), which is L-shaped and has anti-slip texture on its surface.

3. The clamping structure for tensile testing of reinforcing steel bars in construction according to claim 2, characterized in that, A fixing collar (14) is fixedly connected to the surface of the threaded rod (3), and two symmetrical rotating rods (15) are fixedly connected to the surface of the fixing collar (14).

4. The clamping structure for tensile testing of reinforcing steel bars in construction according to claim 3, characterized in that, Both clamping blocks (5) have inclined surfaces on opposite sides, and anti-slip textures are provided on opposite sides of both clamping blocks (5).

5. A clamping structure for tensile testing of reinforcing steel bars in construction according to claim 4, characterized in that, Limiting grooves are provided on both the front and back sides of the inner cavity of the slide groove (7), and limiting strips are fixedly connected to both the front and back sides of the slider (8), with the limiting grooves and limiting strips being adapted to each other.

6. The clamping structure for tensile testing of reinforcing steel bars in construction according to claim 5, characterized in that, The fixing block (10) is T-shaped, the slider (8) is located above the clamping block (5), and the end of the rotating rod (15) away from the fixing collar (14) is hemispherical.

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