A steel strand drawing detection device

Abstract

The utility model relates to steel strand performance detection technical field especially relates to a kind of steel strand drawing detection device, including machine body, the top of machine body is equipped with two mutually parallel second guide rod, the circumferential surface of second guide rod is equipped with two openings facing installation seat, one of installation seat is fixedly connected with the circumferential surface of second guide rod, another installation seat is slidably connected with the circumferential surface of second guide rod, the inner wall of installation seat is fixedly connected with two evenly distributed fixed frame, the adjacent end of two fixed frame is slidably connected with sliding block, clamp replacement only needs to press push rod to drive trapezoidal block and card block interlock unlocking, whole process does not need to help additional tool, single person can complete replacement operation quickly, guide roller can be straight guided to the steel strand bent at end, avoid steel strand to be difficult to accurately enter slot due to bending, while the silica gel pad in V-shaped groove can be closely combined with the burrs and protrusions on the surface of steel strand, guarantee clamping stability.

Description

Technical Field

[0001] This utility model relates to the field of steel strand performance testing technology, and in particular to a steel strand pull-out testing device. Background Technology

[0002] In engineering fields such as construction and bridges, pull-out testing of steel strands is a key step in ensuring the safety of engineering structures. As a core testing device, the reliability of the clamps and the ease of assembly and disassembly of the steel strand pull-out testing equipment directly affect the testing efficiency and data accuracy.

[0003] Currently, most clamps in these devices use pin-type fixing. After the pin is inserted into the positioning hole, a wrench is needed to loosen the end pin, rotate the stop block to clamp the clamp, and then tighten the pin to complete the fixing. However, this method relies on a wrench in on-site testing, increasing the complexity of carrying it and posing a risk of interruption due to tool loss. The process of loosening, rotating, and tightening takes a lot of time per disassembly and assembly, resulting in low efficiency when sampling multiple specifications of steel strands in batches, making it difficult to meet the needs of rapid on-site testing. In terms of fixing reliability, it relies solely on the thread tightening force. During testing, device vibration can easily loosen the threads, causing pin displacement and clamp offset, leading to deviations in test data. In severe cases, clamp detachment also poses a risk of steel strand splashing. It is difficult to adapt to the dual requirements of accuracy and efficiency in testing, and the clamps are inconvenient to use and difficult to meet market demands. Utility Model Content

[0004] In view of the problems with the aforementioned installation fixtures, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a steel strand pull-out testing device, comprising a body, two parallel second guide rods at the top of the body, two facing mounting seats on the circumferential surface of the second guide rods, one mounting seat being fixedly connected to the circumferential surface of the second guide rod, and the other mounting seat being slidably connected to the circumferential surface of the second guide rod, two evenly distributed fixing frames being fixedly connected to the inner wall of the mounting seat, sliding blocks being slidably connected to the adjacent ends of the two fixing frames, and clamps being engaged at the adjacent ends of the two sliding blocks, a rectangular groove being opened at the end of the sliding block near the clamp, a push plate being slidably connected in the rectangular groove, a V-shaped groove being opened at the end of the clamp away from the sliding block, a plurality of evenly distributed silicone pads being fixedly connected to the end of the V-shaped groove near the push plate, and a plurality of evenly distributed guide rollers being rotatably connected to the end of the V-shaped groove away from the silicone pads, a connecting plate being fixedly connected to the bottom of the mounting seat, and a lead screw being threaded onto the inner ring surface of the connecting plate.

[0006] As a preferred embodiment of the steel strand pull-out testing device of this utility model, an installation groove is provided at the contact point between the sliding block and the clamp, a locking block is slidably connected in the installation groove near the contact point between the sliding block and the clamp, a first spring is provided in the installation groove, one end of the first spring is in contact with the end of the locking block away from the clamp, and the other end of the first spring is in contact with the end of the installation groove away from the clamp.

[0007] As a preferred embodiment of the steel strand pull-out testing device of this utility model, a trapezoidal block corresponding to the clamping block is slidably connected in the mounting groove, one end of the trapezoidal block is attached to the end of the clamping block away from the first spring, and sliders that are slidably connected to the clamp are fixedly connected on both sides of the trapezoidal block.

[0008] As a preferred embodiment of the steel strand pull-out testing device of this utility model, the top of the clamp is provided with a circular groove communicating with the mounting groove, a push rod is slidably connected to the inner ring surface of the circular groove, a pressing block that fits against the top of the trapezoidal block is fixedly connected to the bottom end of the push rod, a square plate is fixedly connected to the top of the push rod, a rectangular plate is fixedly connected to the top of the clamp, the inner ring surface of the rectangular plate is slidably connected to the circumferential surface of the push rod, and a plurality of evenly distributed second springs are connected between the square plate and the rectangular plate.

[0009] As a preferred embodiment of the steel strand pull-out testing device of this utility model, a telescopic cylinder is fixedly installed at the end of the mounting base away from the guide roller, and a rod is fixedly connected to the output end of the telescopic cylinder, with one end of the rod fixedly connected to the push plate.

[0010] As a preferred embodiment of the steel strand pull-out testing device of this utility model, the top of the machine body is provided with a sliding groove, which is slidably connected to a connecting plate. A first guide rod that penetrates the connecting plate is fixedly connected in the sliding groove. A drive motor is fixedly connected to the end of the screw away from the mounting seat of the sliding connection. Four evenly distributed fixing plates are fixedly connected to the top of the machine body, and the two fixing plates are fixedly connected to the two ends of the second guide rod.

[0011] The beneficial effects of this utility model are: When changing the clamp, simply press the push rod to drive the trapezoidal block and the locking block to unlock together. No additional tools are needed throughout the process, and a single person can quickly complete the replacement operation. This avoids the problems of complicated operation and time-consuming traditional replacement methods. During the clamping process of the steel strand, the guide roller can straighten the steel strand with a bend at the end, preventing the steel strand from being difficult to accurately enter the groove due to bending. At the same time, the silicone pad in the V-groove can closely fit the burrs and protrusions on the surface of the steel strand, fill the uneven gaps, and completely eliminate the slippage and deviation during clamping. This improves the defect of easy deviation of steel strand in traditional clamping methods and ensures clamping stability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the lead screw installation structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the overall structure of the mounting base of this utility model.

[0015] Figure 4 This is a schematic diagram of the guide roller installation structure of this utility model.

[0016] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0017] Figure 6 This is a schematic diagram of the push rod installation structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Body; 2. Mounting base; 3. Fixture; 4. Sliding block; 5. Clamp; 6. Push plate; 7. Silicone pad; 8. Guide roller; 9. Locking block; 10. First spring; 11. Trapezoidal block; 12. Slider; 13. Pressing block; 14. Push rod; 15. Rectangular plate; 16. Second spring; 17. Connecting plate; 18. Lead screw; 19. First guide rod; 20. Fixing plate; 21. Second guide rod. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Example 1 Reference Figures 1-6This is the first embodiment of the present invention, providing a steel strand pull-out testing device, including a body 1. The top of the body 1 has two parallel second guide rods 21. The circumferential surface of each second guide rod 21 has two facing mounting seats 2. One mounting seat 2 is fixedly connected to the circumferential surface of the second guide rod 21, and the other mounting seat 2 is slidably connected to the circumferential surface of the second guide rod 21. The inner wall of each mounting seat 2 has two evenly distributed fixing frames 3 fixedly connected, and adjacent ends of the two fixing frames 3 are slidably connected to... Sliding blocks 4, with clamps 5 attached to adjacent ends of the two sliding blocks 4. A rectangular groove is provided at the end of the sliding block 4 near the clamp 5, and a push plate 6 is slidably connected in the rectangular groove. A V-shaped groove is provided at the end of the clamp 5 away from the sliding block 4. Multiple evenly distributed silicone pads 7 are fixedly connected at the end of the V-shaped groove near the push plate 6. Multiple evenly distributed guide rollers 8 are rotatably connected at the end of the V-shaped groove away from the silicone pads 7. A connecting plate 17 is fixedly connected to the bottom of the mounting base 2, and a lead screw 18 is threaded onto the inner ring surface of the connecting plate 17.

[0021] An installation groove is provided at the contact point between the sliding block 4 and the clamp 5. A locking block 9 is slidably connected in the installation groove near the contact point between the sliding block 4 and the clamp 5. A first spring 10 is provided in the installation groove. One end of the first spring 10 is in contact with the end of the locking block 9 away from the clamp 5, and the other end of the first spring 10 is in contact with the end of the installation groove away from the clamp 5.

[0022] A trapezoidal block 11 corresponding to the locking block 9 is slidably connected in the mounting slot. One end of the trapezoidal block 11 is attached to the end of the locking block 9 away from the first spring 10. Slider blocks 12 that are slidably connected to the clamp 5 are fixedly connected to both sides of the trapezoidal block 11.

[0023] The top of the clamp 5 has a circular groove that communicates with the mounting groove. A push rod 14 is slidably connected to the inner ring surface of the circular groove. A pressing block 13 that fits against the top of the trapezoidal block 11 is fixedly connected to the bottom of the push rod 14. A square plate is fixedly connected to the top of the push rod 14. A rectangular plate 15 is fixedly connected to the top of the clamp 5. The inner ring surface of the rectangular plate 15 is slidably connected to the circumferential surface of the push rod 14. Multiple evenly distributed second springs 16 are connected between the square plate and the rectangular plate 15.

[0024] During use, the operator holds the rectangular plate 15 at the top of the fixture 5 to be replaced and presses the square plate at the top of the push rod 14. After the square plate is subjected to force, it squeezes the second spring 16 downward, and at the same time drives the push rod 14 to slide downward along the inner ring surface of the rectangular plate 15. The pressing block 13 at the bottom of the push rod 14 moves down accordingly, and its inclined surface fits against the top of the trapezoidal block 11, pushing the trapezoidal block 11 to move horizontally along the slider 12 away from the fixture 5.

[0025] During the movement of trapezoidal block 11, its other side presses against the locking block 9 in the mounting groove of sliding block 4. After being pressed, the locking block 9 moves deeper into the mounting groove and compresses the first spring 10 at the same time until the locking block 9 completely disengages from the locking groove on the side wall of clamp 5. At this time, the fixed relationship between clamp 5 and sliding block 4 is released, and the operator can lift the old clamp 5 directly upwards to complete the disassembly.

[0026] Release the square plate at the top of the push rod 14, and the second spring 16 releases its elastic potential energy, pushing the square plate, push rod 14 and pressing block 13 to return to their original position. At the same time, the first spring 10 pushes the locking block 9 to move towards the opening of the mounting slot, restoring it to its initial ready-to-lock state, in preparation for the installation of the new clamp 5.

[0027] The new clamp 5, which is adapted to the target steel strand specification, is vertically aligned with the installation position of the sliding block 4 and placed downwards. The bottom end of the clamp 5 presses against the inclined surface of the locking block 9, causing the locking block 9 to compress the first spring 10 again and retract into the installation groove. When the clamp 5 is fully inserted into the sliding block 4 and the locking groove on its side wall is aligned with the position of the locking block 9, the first spring 10 pushes the locking block 9 to pop out and lock into the locking groove of the clamp 5, thus completing the stable installation of the new clamp 5.

[0028] Example 2 Reference Figures 1-3 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a telescopic cylinder is fixedly installed at the end of the mounting base 2 away from the guide roller 8, and a rod is fixedly connected to the output end of the telescopic cylinder. The rod is fixedly connected to one end of the push plate 6.

[0029] The top of the body 1 is provided with a sliding groove, which is slidably connected to the connecting plate 17. A first guide rod 19 that passes through the connecting plate 17 is fixedly connected in the sliding groove. A drive motor is fixedly connected to one end of the lead screw 18 away from the mounting base 2 that is slidably connected. Four evenly distributed fixing plates 20 are fixedly connected to the top of the body 1. The two fixing plates 20 are fixedly connected to the two ends of the second guide rod 21.

[0030] During use, the operator holds one end of the steel strand to be tested and aligns it with the V-groove entrance of the clamp 5 on the sliding mounting base 2. The guide roller 8 at the end of the V-groove away from the silicone pad 7 rotates freely as the steel strand is pushed. With the rolling guidance of the roller, the slightly bent end of the steel strand is straightened, avoiding the steel strand from rubbing against the edge of the V-groove. The steel strand is continued to be pushed until the other end of the steel strand extends into the V-groove of the clamp 5 on the side of the fixed end mounting base 2, ensuring that both ends of the steel strand are located in the center position of the V-groove of the clamps 5 on both sides.

[0031] Press the "Clamping Start" button on the device control panel, and the telescopic cylinders in the mounting bases 2 on both sides will start synchronously. The air rod at the output end of the telescopic cylinder pushes the push plate 6, which slides horizontally along the rectangular groove of the sliding block 4. The push plate 6 drives the two sliding blocks 4 to move along the fixed frame 3 towards the steel strand. The fixed frame 3 restricts the sliding blocks 4 to move only horizontally, ensuring that the clamping force direction is stable.

[0032] As the sliding block 4 moves, the silicone pad 7 in the V-groove of the clamp 5 gradually adheres to the surface of the steel strand. The elastic material of the silicone pad 7 can fill the burrs and protrusions on the surface of the steel strand. Even if the end of the steel strand is uneven, it can form a tight fit. When the clamping force reaches the preset value, the telescopic cylinder automatically stops running. At this time, the steel strand is firmly clamped between the clamps 5 on both sides without slippage or displacement, and can proceed to the subsequent pull-out test.

[0033] The remaining structure is the same as that in Example 1.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A steel strand pull-out testing device, comprising a body (1), wherein the top end of the body (1) is provided with two parallel second guide rods (21), and the circumferential surface of the second guide rods (21) is provided with two facing mounting seats (2), one of the mounting seats (2) being fixedly connected to the circumferential surface of the second guide rod (21), and the other mounting seat (2) being slidably connected to the circumferential surface of the second guide rod (21), characterized in that: The inner wall of the mounting base (2) is fixedly connected to two evenly distributed fixing frames (3). Sliding blocks (4) are slidably connected to the adjacent ends of the two fixing frames (3). Clamps (5) are clamped to the adjacent ends of the two sliding blocks (4). A rectangular groove is opened at the end of the sliding block (4) near the clamp (5). A push plate (6) is slidably connected in the rectangular groove. A V-shaped groove is opened at the end of the clamp (5) away from the sliding block (4). Multiple evenly distributed silicone pads (7) are fixedly connected at the end of the V-shaped groove near the push plate (6). Multiple evenly distributed guide rollers (8) are rotatably connected at the end of the V-shaped groove away from the silicone pads (7). A connecting plate (17) is fixedly connected to the bottom end of the mounting base (2). A screw rod (18) is threaded onto the inner ring surface of the connecting plate (17).

2. The steel strand pull-out testing device according to claim 1, characterized in that: An installation groove is provided at the contact point between the sliding block (4) and the clamp (5). A locking block (9) is slidably connected in the installation groove near the contact point between the sliding block (4) and the clamp (5). A first spring (10) is provided in the installation groove. One end of the first spring (10) is in contact with the end of the locking block (9) away from the clamp (5), and the other end of the first spring (10) is in contact with the end of the installation groove away from the clamp (5).

3. The steel strand pull-out testing device according to claim 2, characterized in that: The mounting groove is slidably connected to a trapezoidal block (11) corresponding to the card block (9). One end of the trapezoidal block (11) is attached to the end of the card block (9) away from the first spring (10). The two sides of the trapezoidal block (11) are fixedly connected to sliders (12) that are slidably connected to the clamp (5).

4. The steel strand pull-out testing device according to claim 3, characterized in that: The top of the clamp (5) is provided with a circular groove communicating with the mounting groove. A push rod (14) is slidably connected to the inner annular surface of the circular groove. A pressing block (13) that fits against the top of the trapezoidal block (11) is fixedly connected to the bottom end of the push rod (14). A square plate is fixedly connected to the top end of the push rod (14). A rectangular plate (15) is fixedly connected to the top end of the clamp (5). The inner annular surface of the rectangular plate (15) is slidably connected to the circumferential surface of the push rod (14). A plurality of evenly distributed second springs (16) are connected between the square plate and the rectangular plate (15).

5. The steel strand pull-out testing device according to claim 1, characterized in that: A telescopic cylinder is fixedly installed at the end of the mounting base (2) away from the guide roller (8). A rod is fixedly connected to the output end of the telescopic cylinder. The rod is fixedly connected to one end of the push plate (6).

6. The steel strand pull-out testing device according to claim 1, characterized in that: The top of the body (1) is provided with a sliding groove, which is slidably connected to the connecting plate (17). A first guide rod (19) that penetrates the connecting plate (17) is fixedly connected in the sliding groove. A drive motor is fixedly connected to one end of the lead screw (18) away from the mounting seat (2) of the sliding connection. Four evenly distributed fixing plates (20) are fixedly connected to the top of the body (1). The two fixing plates (20) are fixedly connected to the two ends of the second guide rod (21).

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