A prestressed steel rod hardness detection device

Abstract

The utility model relates to the technical field of hardness detection, specifically disclose a kind of pre-stressed steel bar hardness detection device, comprising: detection base, the upper surface of detection base is fixedly connected with detection machine body, the bottom upper surface of detection machine body is provided with lifting assembly, the upper surface of lifting assembly is fixedly connected with positioning assembly, through the clamping seat and non-slip rubber sheet of setting, clamping seat passes through first adjusting groove, second adjusting groove and third adjusting groove, cooperate first positioning shaft, second positioning shaft and third positioning shaft, realize three levels position adjustment. Rotating manual turntable drives double-end screw rod, linkage base and clamping seat are moved, and simultaneously, each stage adjusting plate is slid along positioning shaft, and the pre-stressed steel bar of different diameters can be accurately adapted. Non-slip rubber sheet is connected with adjusting plate, closely adheres to steel bar surface, both ensure firm clamping, and also avoid damaging steel bar surface, compared with traditional single size clamp, greatly improve its application range.

Description

Technical Field

[0001] This utility model relates to the field of hardness testing technology, specifically a hardness testing device for prestressed steel bars. Background Technology

[0002] Prestressed steel bars are a type of prestressed steel with high technical content. They have the characteristics of high strength and toughness, low relaxation, strong bond with concrete, and material saving. They have been widely used in high-strength prestressed concrete centrifugal pipe piles, utility poles, railway sleepers and other prestressed components at home and abroad. They have a very broad market internationally, especially in Asia.

[0003] Traditional testing devices have fixed component dimensions and are only designed for prestressed steel bars of specific diameters and lengths. When testing prestressed steel bars of different sizes, their fixing structures are simply unsuitable, resulting in the steel bars being clamped either too loosely or too tightly, affecting the accuracy of the test results and reducing the reliability of the testing. Therefore, we propose a prestressed steel bar hardness testing device. Utility Model Content

[0004] The purpose of this invention is to provide a prestressed steel bar hardness testing device to solve the problem that the traditional testing devices mentioned in the background art have fixed component dimensions and are only suitable for prestressed steel bars of specific diameters and lengths. When it is necessary to test prestressed steel bars of different sizes, their fixing structure cannot be adapted at all, resulting in the steel bars being clamped either too loosely or too tightly, which affects the accuracy of the test results and reduces the reliability of the test.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a prestressed steel bar hardness testing device, comprising: a testing base, a testing machine body fixedly connected to the upper surface of the testing base, a lifting component provided on the bottom upper surface of the testing machine body, and a positioning component fixedly connected to the upper surface of the lifting component; The positioning assembly includes a connecting plate and a clamping seat. A first adjustment groove is provided on the inward side of the clamping seat. A first positioning shaft is fixedly connected to the upper surface of the first adjustment groove. A first adjustment plate is sleeved on the outer surface of the first positioning shaft. A second adjustment groove is provided on the side of the first adjustment plate away from the clamping seat. A second positioning shaft is fixedly connected to the upper surface of the second adjustment groove. A second adjustment plate is sleeved on the outer surface of the second positioning shaft. A third adjustment groove is provided on the side of the second adjustment plate away from the first adjustment plate. A third adjustment plate is fixedly connected to the upper surface of the third adjustment groove. A third positioning shaft is sleeved on the outer surface of the third adjustment plate. An anti-slip rubber plate is fixedly connected to the outward side of the third positioning shaft.

[0006] The upper surface of the connecting plate is fixedly connected to the upper surface of the lifting assembly, a guide frame is fixedly connected to the upper surface of the connecting plate, and a linkage base is movably connected to the inner surface of the guide frame.

[0007] The linkage base has a push block fixedly connected to the bottom center, a double-headed screw is rotatably connected inside the push block, and a manual turntable is fixedly connected to the outer surface of the double-headed screw.

[0008] The clamping seat is fixedly connected to the upper surface of the center of the linkage base. Guide blocks are fixedly connected to the bottom of both ends of the clamping seat. Guide rods are slidably connected to the front and rear ends of the guide blocks. A support seat is fixedly connected to the center of the guide block. A pad is fixedly connected to the bottom of the support seat.

[0009] The pad, support, and guide rod are arranged symmetrically in two sets at both ends of the clamping seat, and the clamping seats are arranged symmetrically in two sets at the left and right ends of the support seat.

[0010] The linkage base is supported symmetrically in two sets at the bottom of both ends of the clamping seat.

[0011] This utility model has at least the following beneficial effects: 1. In use, this utility model utilizes a clamping seat and anti-slip rubber plate. The clamping seat, through a first adjustment groove, a second adjustment groove, and a third adjustment groove, works in conjunction with a first positioning shaft, a second positioning shaft, and a third positioning shaft to achieve three levels of position adjustment. Rotating the manual turntable drives the double-ended screw, pushing the linkage base and clamping seat to move. Simultaneously, each adjustment plate slides along the positioning shaft, allowing for precise adaptation to prestressed steel bars of different diameters. The anti-slip rubber plate connects to the adjustment plates, tightly fitting the surface of the steel bar, ensuring secure clamping while preventing damage to the steel bar surface. Compared to traditional single-size clamps, this significantly expands its applicability.

[0012] 2. In use, this utility model utilizes a guide rod and guide frame, with the guide block at the bottom of the clamping seat slidingly engaging with the guide rod to ensure a smooth and non-deviation-prone clamping process. Symmetrically arranged support seats and pads further enhance structural stability, preventing uneven force on the steel rod and subsequent wobbling. The linkage base slides within the guide frame, achieving rapid positioning through the transmission of the push block and double-ended screw. Compared to manual adjustment, this effectively improves positioning efficiency and provides a stable testing foundation for the testing machine, ensuring the accuracy and reliability of hardness testing data. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the lifting component and the positioning component of this utility model; Figure 3 This is a side view of the structural lifting assembly of this utility model; Figure 4 This is a top view of the structural lifting component of this utility model.

[0014] In the diagram: 1. Detection base; 2. Detection machine body; 3. Lifting assembly; 4. Positioning assembly; 41. Connecting plate; 42. Guide frame; 43. Linkage base; 44. Push block; 45. Double-ended screw; 46. Manual turntable; 47. Clamping seat; 48. Guide block; 49. Guide rod; 410. Support seat; 411. Pad; 412. First adjustment slot; 413. First adjustment plate; 414. First positioning shaft; 415. Second adjustment slot; 416. Second adjustment plate; 417. Second positioning shaft; 418. Third adjustment slot; 419. Third adjustment plate; 420. Third positioning shaft; 421. Anti-slip rubber plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a prestressed steel bar hardness testing device, comprising: a testing base 1, a testing body 2 fixedly connected to the upper surface of the testing base 1, a lifting component 3 provided on the bottom upper surface of the testing body 2, and a positioning component 4 fixedly connected to the upper surface of the lifting component 3.

[0017] In use, the clamping seat 47 and anti-slip rubber plate 421 are configured. The clamping seat 47, through the first adjustment groove 412, the second adjustment groove 415, and the third adjustment groove 418, cooperates with the first positioning shaft 414, the second positioning shaft 417, and the third positioning shaft 420 to achieve three-level position adjustment. Rotating the manual turntable 46 drives the double-headed screw 45, pushing the linkage base 43 and the clamping seat 47 to move. At the same time, the adjustment plates at each level slide along the positioning shaft, which can accurately adapt to prestressed steel bars of different diameters. The anti-slip rubber plate 421 is connected to the adjustment plate and fits tightly against the surface of the steel bar, ensuring a firm clamping and avoiding damage to the surface of the steel bar. Compared with traditional single-size clamps, its applicability is greatly improved.

[0018] The positioning assembly 4 includes a connecting plate 41 and a clamping seat 47. A first adjusting groove 412 is provided on the inward side of the clamping seat 47. A first positioning shaft 414 is fixedly connected to the upper surface of the first adjusting groove 412. A first adjusting plate 413 is sleeved on the outer surface of the first positioning shaft 414. A second adjusting groove 415 is provided on the side of the first adjusting plate 413 away from the clamping seat 47. A second positioning shaft 417 is fixedly connected to the upper surface of the second adjusting groove 415. A second adjusting plate 416 is sleeved on the outer surface of the second positioning shaft 417. A third adjusting groove 418 is provided on the side of the second adjusting plate 416 away from the first adjusting plate 413. A third adjusting plate 419 is fixedly connected to the upper surface of the third adjusting groove 418. A third positioning shaft 420 is sleeved on the outer surface of the third adjusting plate 419. An anti-slip rubber plate 421 is fixedly connected to the outward side of the third positioning shaft 420.

[0019] The upper surface of the connecting plate 41 is fixedly connected to the upper surface of the lifting assembly 3. The upper surface of the connecting plate 41 is fixedly connected to the guide frame 42, and the inner surface of the guide frame 42 is movably connected to the linkage base 43.

[0020] A push block 44 is fixedly connected to the bottom center of the linkage base 43. A double-headed screw 45 is rotatably connected inside the push block 44. A manual turntable 46 is fixedly connected to the outer surface of the double-headed screw 45.

[0021] The clamping seat 47 is fixedly connected to the upper surface of the center of the linkage base 43. Guide blocks 48 are fixedly connected to the bottom of both ends of the clamping seat 47. Guide rods 49 are slidably connected to the front and rear ends of the guide blocks 48. A support seat 410 is fixedly connected to the center of the guide blocks 48. A pad 411 is fixedly connected to the bottom of the support seat 410.

[0022] The pad 411, the support 410 and the guide rod 49 are symmetrically arranged in two sets at both ends of the clamping seat 47, and the clamping seat 47 is symmetrically arranged in two sets at the left and right ends of the support 410.

[0023] The linkage base 43 is symmetrically supported at both ends of the clamping base 47 in two sets.

[0024] In use, first place the testing base 1 stably on the working surface, and fix the testing body 2 on the upper surface of the testing base 1 to provide a stable foundation for subsequent testing. When it is necessary to test the prestressed steel bar, the lifting component 3 is activated, which drives the positioning component 4 above to adjust its height so that the positioning component 4 reaches a suitable position for placing the steel bar.

[0025] Subsequently, the operator places the prestressed steel bars between the clamping seats 47. The first adjustment groove 412, the second adjustment groove 415, and the third adjustment groove 418 opened on the inner side of the clamping seat 47 constitute a multi-stage adjustment structure. Rotating the manual turntable 46 causes the double-headed screw 45 fixed to it to rotate. When the double-headed screw 45 rotates, the pushing block 44 moves along the screw axis at the center of the linkage base 43, thereby causing the linkage base 43 to slide on the inner surface of the guide frame 42, causing the clamping seat 47 to be displaced.

[0026] As the clamping seat 47 moves, the first adjusting plate 413 adjusts its position around the first positioning shaft 414 via the first adjusting groove 412; the second adjusting plate 416 further fine-tunes its position around the second positioning shaft 417 via the second adjusting groove 415; and the third adjusting plate 419 achieves precise adjustment around the third positioning shaft 420 via the third adjusting groove 418. The three adjusting plates work together to accommodate prestressed steel bars of different diameters, until the anti-slip rubber plate 421 is tightly fitted against the surface of the steel bar, using the friction and elastic deformation of the rubber plate to firmly clamp the steel bar.

[0027] Meanwhile, the guide blocks 48 at both ends of the clamping seat 47 slide along the guide rod 49 to ensure that the clamping seat 47 remains stable during movement and avoids deviation. The support seat 410 and the pad 411 are symmetrically arranged at both ends of the clamping seat 47 to provide auxiliary support for the clamping process and enhance the stability of the overall structure. After the steel bar is accurately clamped and positioned, the lifting component 3 operates again to raise the positioned steel bar to the detection position of the detection machine body 2. The detection machine body 2 then begins to perform hardness testing on the steel bar, completing the entire testing process.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the hardness of prestressed steel bars, comprising: The detection base is characterized in that: a detection body is fixedly connected to the upper surface of the detection base, a lifting component is provided on the bottom upper surface of the detection body, and a positioning component is fixedly connected to the upper surface of the lifting component; The positioning assembly includes a connecting plate and a clamping seat. A first adjusting groove is formed on the inward side of the clamping seat. A first positioning shaft is fixedly connected to the upper surface of the first adjusting groove. A first adjusting plate is sleeved on the outer surface of the first positioning shaft. A second adjusting groove is formed on the side of the first adjusting plate away from the clamping seat. A second positioning shaft is fixedly connected to the upper surface of the second adjusting groove. A second adjusting plate is sleeved on the outer surface of the second positioning shaft. A third adjusting groove is formed on the side of the second adjusting plate away from the first adjusting plate. A third adjusting plate is fixedly connected to the upper surface of the third adjusting groove. A third positioning shaft is sleeved on the outer surface of the third adjusting plate. An anti-slip rubber plate is fixedly connected to the outward side of the third positioning shaft.

2. The prestressed steel bar hardness testing device according to claim 1, characterized in that: The upper surface of the connecting plate is fixedly connected to the upper surface of the lifting assembly, a guide frame is fixedly connected to the upper surface of the connecting plate, and a linkage base is movably connected to the inner surface of the guide frame.

3. The prestressed steel bar hardness testing device according to claim 2, characterized in that: A push block is fixedly connected to the bottom center of the linkage base. A double-headed screw is rotatably connected inside the push block, and a manual turntable is fixedly connected to the outer surface of the double-headed screw.

4. The prestressed steel bar hardness testing device according to claim 1, characterized in that: The clamping seat is fixedly connected to the upper surface at the center of the linkage base. Guide blocks are fixedly connected to the bottom of both ends of the clamping seat. Guide rods are slidably connected to the front and rear ends of the guide blocks. A support seat is fixedly connected to the center of the guide blocks. A pad is fixedly connected to the bottom of the support seat.

5. The prestressed steel bar hardness testing device according to claim 4, characterized in that: The pad, support, and guide rod are arranged symmetrically in two sets at both ends of the clamping seat, and the clamping seats are arranged symmetrically in two sets at the left and right ends of the support seat.

6. The prestressed steel bar hardness testing device according to claim 2, characterized in that: The linkage base is supported symmetrically in two sets at the bottom of both ends of the clamping seat.

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