Anchor cable steel strand stress relaxation testing device

Abstract

The invention relates to the field of anchor cable steel strand testing devices, in particular to an anchor cable steel strand stress relaxation testing device which comprises a testing mechanism and an adjusting mechanism, the testing mechanism comprises a magnetic base, a support is arranged on the magnetic base, a dial indicator is arranged on the support, the adjusting mechanism comprises a sliding assembly arranged on the support, and the sliding assembly is connected with the dial indicator. The dial indicator is arranged on the support, the sliding assembly is used for sliding the dial indicator on the support, an adjusting assembly used for adjusting the angle of the dial indicator is arranged between the sliding assembly and the dial indicator, the dial indicator can be horizontally moved for detection through the sliding assembly, and the dial indicator can be subjected to angle adjustment through the adjusting assembly. According to the anchor cable steel strand stress relaxation testing device, the dial indicator is arranged on the support, so that the measuring rod of the dial indicator is perpendicular to the detected face of the rack, errors are greatly reduced, the anchor cable steel strand stress relaxation testing precision is improved, the dial indicator and the support are fixed through the positioning assembly, and the deformation degree of the detected face of the rack is tested in real time.

Description

Technical Field

[0001] The present invention relates to the field of anchor cable strand testing devices, especially the stress relaxation testing device for anchor cable strands. Background Art

[0002] Strands are important materials in prestressed engineering construction, and the quality of the strands needs to be detected before construction. The stress relaxation test device for strands is a test instrument for testing the stress of strands. There are many influencing factors in the test, but the influence of the small deformation of the test equipment frame on the test results of strand stress relaxation is often ignored. The stress relaxation test of copper strands requires 1000 hours of experimental time. Under long-term stress, the strands will undergo stress relaxation, and the frame will inevitably produce small deformations, resulting in insufficient accuracy of the determination results due to the influence of the strand relaxation rate test device and affecting the accuracy of the test results.

[0003] In the prior art, when detecting the frame, a dial indicator is usually used to detect the deformation of the frame. When the dial indicator detects the horizontal plane and the vertical plane, the measuring rod of the dial indicator is perpendicular to the horizontal plane or the vertical plane. When the measuring rod of the dial indicator is perpendicular to the detection surface, the measurement result is the most accurate. This is because the contact point between the measuring rod and the detection surface remains stable during the measurement process, and the moving direction of the measuring rod is consistent with the normal direction of the detection surface, thereby reducing the measurement error. However, due to the presence of inclined surfaces on some frames, when detecting the inclined surfaces, the measuring rod of the dial indicator is inclined with respect to the detection surface, and the moving direction of the measuring rod is inconsistent with the normal direction of the detection surface, which will cause errors in the measurement results. Specifically, the larger the inclination angle of the measuring rod, the greater the measurement error. In the prior art, the angle of the dial indicator can mostly not be adjusted and can only be horizontally or vertically slidably mounted on the frame body. As a result, when it is necessary to detect the deformation of the frame inclined surface, the error is large, affecting the accuracy of the test results.

[0004] Therefore, a stress relaxation testing device for anchor cable strands is proposed. Summary of the Invention

[0005] In view of the problem that in the above-mentioned or prior art, the angle of the dial indicator can mostly not be adjusted and can only be horizontally or vertically slidably mounted on the frame body, resulting in large errors when it is necessary to detect the deformation of the frame inclined surface and affecting the accuracy of the test results, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a stress relaxation testing device for anchor cable strands.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: including, A testing mechanism, which includes a magnetic base, a bracket is arranged on the magnetic base, and a dial indicator is arranged on the bracket; Adjusting mechanism, which includes a sliding component provided on a bracket, the sliding component is connected to a dial indicator, the sliding component is used for the dial indicator to slide on the bracket, an adjusting component for adjusting the angle of the dial indicator is provided between the sliding component and the dial indicator, and a positioning component for fixing the dial indicator to the bracket is provided.

[0008] As a preferred embodiment of the stress relaxation test device for the anchor cable steel strand of the present invention, wherein: the bracket includes a vertical rod fixedly connected to a magnetic base, and a horizontal rod perpendicular to the vertical rod, the horizontal rod is connected to the vertical rod through a bushing, and the horizontal rod can be adjusted in height up and down on the vertical rod through the bushing.

[0009] As a preferred embodiment of the stress relaxation test device for the anchor cable steel strand of the present invention, wherein: the sliding component includes a sliding sleeve slidably sleeved on the horizontal rod, a first vertical plate and a second vertical plate are provided at the top of the sliding sleeve, a smooth rod is installed between the first vertical plate and the second vertical plate, and a mounting frame is sleeved on the surface of the smooth rod, and the mounting frame is connected to the dial indicator.

[0010] As a preferred embodiment of the stress relaxation test device for the anchor cable steel strand of the present invention, wherein: the adjusting component includes an arc plate provided between the first vertical plate and the second vertical plate, and one end of the arc plate is connected to the first vertical plate through a rotating shaft.

[0011] As a preferred embodiment of the stress relaxation test device for the anchor cable steel strand of the present invention, wherein: the arc plate is provided with a first notch, a second notch and a third notch, and the notch surfaces of the first notch, the second notch and the third notch are all arc surfaces.

[0012] As a preferred embodiment of the stress relaxation test device for the anchor cable steel strand of the present invention, wherein: the adjusting component further includes a toothed ring provided on the mounting frame, the toothed part of the toothed ring is located inside the toothed ring, a limiting strip is further provided between the first vertical plate and the second vertical plate, the end of the limiting strip is arc-shaped, and the limiting strip matches the toothed part of the toothed ring.

[0013] As a preferred embodiment of the stress relaxation test device for the anchor cable steel strand of the present invention, wherein: the adjusting component further includes chutes opened on the smooth rod and the second vertical plate, a slider and a first spring are provided inside the chutes, the top of the slider penetrates out of the chute and is connected to the limiting strip, one end of the first spring is connected to the slider, and the other end of the first spring is connected to the inner wall of the chute.

[0014] As a preferred embodiment of the stress relaxation test device for the anchor cable steel strand of the present invention, wherein: the positioning component includes a first column connected to the slider, an extrusion block is connected to the end of the first column away from the slider, and a first inclined surface is provided on the extrusion block.

[0015] As a preferred embodiment of the stress relaxation test device for the anchor cable steel strand of the present invention, wherein: the positioning assembly further includes a second column provided on one side of the second vertical plate. An annular frame is sleeved on the surface of the second column. The second column can slide up and down on the annular frame. One side of the annular frame is connected to the second vertical plate. A second spring is connected to the top of the annular frame. The second spring is sleeved on the surface of the second column. And the end of the second spring away from the annular frame is connected to a force-bearing block. A second inclined surface is provided on the force-bearing block. The second inclined surface is matched with the first inclined surface; One end of the second column is fixedly connected to the force-bearing block.

[0016] As a preferred embodiment of the stress relaxation test device for the anchor cable steel strand of the present invention, wherein: a positioning groove is provided on the horizontal rod. The positioning groove is matched with the second column.

[0017] The beneficial effects of the stress relaxation test device for the anchor cable steel strand of the present invention: Through the setting of the sliding assembly, the dial indicator can slide on the support, so that the dial indicator can move horizontally for detection. Through the setting of the adjustment assembly, the dial indicator can be adjusted in angle, so that the measuring rod of the dial indicator is perpendicular to the detected surface of the frame, greatly reducing the error and improving the accuracy of the stress relaxation test of the anchor cable steel strand. Through the setting of the positioning assembly, the dial indicator is fixed to the support and can be in contact with the detected surface of the frame for a long time, so as to measure the deformation degree of the detected surface of the frame in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall structure of the stress relaxation test device for the anchor cable steel strand; Figure 2 It is a schematic diagram of the overall rear view partial structure of the stress relaxation test device for the anchor cable steel strand; Figure 3 It is a schematic diagram of the adjustment assembly structure of the stress relaxation test device for the anchor cable steel strand Figure 4 It is a schematic diagram of the adjustment assembly sectional part structure of the stress relaxation test device for the anchor cable steel strand; Figure 5 It is a schematic diagram of the positioning assembly partial structure of the stress relaxation test device for the anchor cable steel strand.

[0020] In the figure: 1. Testing mechanism; 11. Magnetic base; 12. Bracket; 121. Vertical rod; 122. Horizontal rod; 1221. Positioning groove; 123. Bush; 13. Micrometer. 2. Adjusting mechanism; 21. Sliding component; 211. Sliding sleeve; 212. First vertical plate; 213. Second vertical plate; 214. Smooth rod; 215. Mounting bracket; 22. Adjusting component; 221. Arc-shaped plate; 2211. First notch; 2212. Second notch; 2213. Third notch; 222. Tooth ring; 223. Limiting strip; 224. Chute; 225. Slide block; 226. First spring; 23. Positioning component; 231. First upright post; 232. Extrusion block; 233. First inclined plane; 234. Second upright post; 235. Ring-shaped frame; 236. Second spring; 237. Force-receiving block; 238. Second inclined plane. Specific implementation mode

[0021] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the specific implementation modes of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0022] Example 1, referring to Figures 1 to 4 , which is the first embodiment of the present invention. This embodiment provides a stress relaxation test device for anchor cable steel strands, which can achieve the effect of detecting the deformation of the frame. It includes a testing mechanism 1, which includes a magnetic base 11. A bracket 12 is arranged on the magnetic base 11, a micrometer 13 is arranged on the bracket 12, and an adjusting mechanism 2 is also arranged on the bracket 12. The adjusting mechanism 2 includes a sliding component 21 arranged on the bracket 12. The sliding component 21 is connected to the micrometer 13. The sliding component 21 is used for the micrometer 13 to slide on the bracket 12. An adjusting component 22 for adjusting the angle of the micrometer 13 is arranged between the sliding component 21 and the micrometer 13, and a positioning component 23 for fixing the micrometer 13 and the bracket 12 is arranged. Among them, the magnetic base 11 is a device that uses the magnetic principle to achieve fixation and adsorption. It is widely used in various mechanical equipment and industrial production. It is composed of a magnetic base body, an iron core, a coil, etc. The working principle of the magnetic base 11 is mainly to achieve the fixation and positioning of workpieces through the attraction and repulsion of magnetic force. It is a very mature existing technology. Among them, the micrometer 13 is a high-precision measuring tool used to measure the size, shape and position error of workpieces. It is commonly used in fields such as machining, quality inspection and precision measurement. The measurement accuracy of the micrometer 13 can reach 0.001 mm, so it is very commonly used in high-precision measurements. The specific measurement is a very mature existing technology. Through the setting of the sliding component 21, the dial indicator 13 can slide on the support 12, so that the dial indicator 13 can move horizontally for detection. Through the setting of the adjustment component 22, the dial indicator 13 can be adjusted in angle, so that the measuring rod of the dial indicator 13 is perpendicular to the detected surface of the frame, greatly reducing the error and improving the accuracy of the stress relaxation test of the anchor cable steel strand. Through the setting of the positioning component 23, the dial indicator 13 is fixed to the support 12 and can be in contact with the detected surface of the frame for a long time, so as to detect the deformation degree of the detected surface of the frame in real time.

[0023] Further, the support 12 includes a vertical rod 121 fixedly connected to the magnetic base 11 and a horizontal rod 122 perpendicular to the vertical rod 121. The horizontal rod 122 is connected to the vertical rod 121 through a bushing 123, and the horizontal rod 122 can be adjusted in height up and down on the vertical rod 121 through the bushing 123; Wherein, the bushing 123 and the vertical rod 121 can be connected by means of a buckle or the like, as long as the connection method can adjust the height of the horizontal rod 122.

[0024] Further, the sliding component 21 includes a sliding sleeve 211 slidably sleeved on the horizontal rod 122. A first vertical plate 212 and a second vertical plate 213 are arranged at the top of the sliding sleeve 211. A smooth rod 214 is installed between the first vertical plate 212 and the second vertical plate 213. An installation frame 215 is sleeved on the surface of the smooth rod 214, and the installation frame 215 is connected to the dial indicator 13; Wherein, the dial indicator 13 is adjustably connected to the installation frame 215, that is, the dial indicator 13 can be adjusted in position on the installation frame 215.

[0025] In this embodiment, the horizontal rod 122 and the vertical rod 121 are preferably rectangular, which can ensure that the dial indicator 13 is perpendicular to the vertical and horizontal planes of the frame, reducing the test error. At the same time, the installation frame 215 is fixedly connected to the smooth rod 214; When in use, the magnetic base 11 is installed on the top of the device, the horizontal rod 122 is adjusted to an appropriate height. Depending on whether to test the top or the side of the rack, the sliding sleeve 211 is sleeved on the surface of the horizontal rod 122, so that the dial indicator 13 is perpendicular to the top or the side of the rack. When testing the top of the rack, pull the dial indicator 13, so that the dial indicator 13 drives the smooth rod 214 to move through the mounting bracket 215. The smooth rod 214 drives the sliding sleeve 211 to slide on the horizontal rod 122 through the first vertical plate 212 and the second vertical plate 213. According to the value shown on the dial indicator 13, it is judged whether the rack is deformed in the horizontal direction. When testing the side of the rack, unlock the locking between the bushing 123 and the vertical rod 121, and pull the bushing 123 to move up and down on the vertical rod 121. The bushing 123 drives the sliding sleeve 211 to move up and down through the horizontal rod 122. The sliding sleeve 211 drives the smooth rod 214 to move up and down through the first vertical plate 212 and the second vertical plate 213. The smooth rod 214 drives the dial indicator 13 to move up and down through the mounting bracket 215, realizing the test of the deformation of the side of the rack.

[0026] In summary, in this embodiment, a plane testing device for the top and side of the rack is provided, which can detect the minute deformation generated during the long-term use of the rack, improving the accuracy of the stress relaxation test of the anchor cable steel strand.

[0027] Embodiment 2, referring to Figures 2 to 5 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an adjusting assembly 22 for the stress relaxation test device of the anchor cable steel strand, solving the problem that the dial indicator 13 cannot test the deformation of the inclined plane. The adjusting assembly 22 includes an arc-shaped plate 221 disposed between the first vertical plate 212 and the second vertical plate 213. One end of the arc-shaped plate 221 is connected to the first vertical plate 212 through a rotating shaft, and the rotation center of the arc-shaped plate 221 corresponds to the smooth rod 214.

[0028] Further, the arc-shaped plate 221 is provided with a first notch 2211, a second notch 2212 and a third notch 2213. The notch surfaces of the first notch 2211, the second notch 2212 and the third notch 2213 are all arc surfaces; Among them, the first notch 2211, the second notch 2212 and the third notch 2213 all correspond to the limiting strip 223: When the end of the limiting strip 223 is located inside the first notch 2211, the limiting strip 223 is misaligned with the toothed ring 222, that is, the toothed ring 222 can rotate, and further the mounting bracket 215 and the dial indicator 13 provided on the mounting bracket 215 can be adjusted in angle; When the end of the limit bar 223 is located inside the second notch 2212, the limit bar 223 corresponds to the position of the gear ring 222, that is, the limit bar 223 prevents the gear ring 222 from rotating, and further prevents the mounting bracket 215 and the dial indicator 13 provided on the mounting bracket 215 from being adjusted in angle; When the end of the limit bar 223 is located inside the third notch 2213, the limit bar 223 corresponds to the position of the gear ring 222, preventing the mounting bracket 215 and the dial indicator 13 provided on the mounting bracket 215 from being adjusted in angle. At the same time, the extrusion block 232 presses the force-receiving block 237, causing the force-receiving block 237 to drive the second upright column 234 to insert into the positioning groove 1221, preventing the sliding sleeve 211 and the dial indicator 13 provided on the sliding sleeve 211 from moving.

[0029] Further, the adjusting assembly 22 further includes a gear ring 222 provided on the mounting bracket 215. The teeth of the gear ring 222 are located inside the gear ring 222. A limit bar 223 is also provided between the first vertical plate 212 and the second vertical plate 213. The end of the limit bar 223 is arc-shaped, and the limit bar 223 matches the teeth of the gear ring 222; Wherein, the end of the teeth of the gear ring 222 close to the smooth rod 214 is arc-shaped, facilitating the rotation of the gear ring 222 on the smooth rod 214.

[0030] Further, the adjusting assembly 22 further includes a chute 224 opened on the smooth rod 214 and the second vertical plate 213. A slider 225 and a first spring 226 are arranged inside the chute 224. The top of the slider 225 passes through the chute 224 and is connected to the limit bar 223. One end of the first spring 226 is connected to the slider 225, and the other end of the first spring 226 is fixedly connected to the inner wall of the chute 224; Wherein, the arrangement of the chute 224 ensures that the slider 225 can only move linearly, and further ensures that the limit bar 223 connected to the slider 225 can only move linearly. That is, when the limit bar 223 is inserted between the teeth of the gear ring 222, the limit bar 223 can restrict the gear ring 222, preventing the gear ring 222 from rotating, and further preventing the mounting bracket 215 and the dial indicator 13 provided on the mounting bracket 215 from being adjusted in angle.

[0031] In this embodiment, the mounting bracket 215 can be rotatably connected to the second vertical plate 213 through a rotating shaft, or a circular notch is provided on the smooth rod 214, the inside of the gear ring 222 is located inside the circular notch, and the two sides of the teeth of the gear ring 222 away from each other are respectively attached to the inner walls of the two sides of the circular notch away from each other, or other structures that can make the mounting bracket 215 only rotate around the smooth rod 214 and cannot slide horizontally on the smooth rod 214 are all acceptable; The remaining structures are the same as those in Embodiment 1.

[0032] When in use, when it is necessary to test the deformation of the side of the rack, rotate the mounting bracket 215. The mounting bracket 215 drives the dial indicator 13 to rotate, so that the dial indicator 13 is rotated to an appropriate angle. After completion, rotate the arc-shaped plate 221, so that the arc surface of the first notch 2211 on the arc-shaped plate 221 presses against the limiting strip 223, so that the limiting strip 223 moves and inserts between two tooth parts of the toothed ring 222, so that the toothed ring 222 cannot rotate, and further the mounting bracket 215 and the dial indicator 13 provided on the mounting bracket 215 cannot be adjusted in angle. At the same time, the limiting block drives the slider 225 to move inside the chute 224, and the slider 225 pulls the first spring 226, so that the first spring 226 is stretched. Under the elastic force of the first spring 226, the stable connection between the limiting strip 223 and the arc-shaped plate 221 is ensured. When adjustment is required again, reverse the arc-shaped plate 221, so that the first notch 2211 on the arc-shaped plate 221 corresponds to the position of the limiting strip 223. At this time, the arc-shaped plate 221 no longer presses against the limiting strip 223. Under the pulling force of the first spring 226, the slider 225 resets, and the slider 225 drives the limiting strip 223 to reset, so that the limiting strip 223 disengages from between the two corresponding tooth parts of the toothed ring 222, releasing the rotation restriction on the toothed ring 222, so that the toothed ring 222 can rotate, and further the mounting bracket 215 and the dial indicator 13 provided on the mounting bracket 215 can be adjusted in angle.

[0033] In summary, in this embodiment, a device for adjusting the angle of the dial indicator 13 is provided, so that the dial indicator 13 can be adjusted in angle according to the inclined plane on the rack to be detected, and further the measuring rod of the dial indicator 13 is perpendicular to the side of the rack, greatly reducing the error and improving the accuracy of the stress relaxation test of the anchor cable steel strand. Although in the prior art, the horizontal rod 122 can be set to be cylindrical so that the dial indicator 13 can be adjusted in angle, there is no device for positioning the dial indicator 13 after the angle adjustment. Although the staff manually pulls the dial indicator 13, the dial indicator 13 can be horizontally moved, but as long as it is slightly swung, the measuring rod of the dial indicator 13 will no longer contact the side of the rack, affecting the test effect of the inclined plane of the rack. In this embodiment, the dial indicator 13 can be positioned after adjustment, and in cooperation with the horizontal rod 122, it is ensured that the dial indicator 13 is always perpendicular to the inclined plane to be tested of the rack during movement, reducing the test error and improving the test accuracy.

[0034] Embodiment 3, referring to Figures 2 to 5 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a positioning component 23 of the anchor cable steel strand stress relaxation test device, which solves the problem of the sliding of the dial indicator 13. The positioning component 23 includes a first column 231 connected to the slider 225. One end of the first column 231 away from the slider 225 is connected with a pressing block 232, and a first inclined surface 233 is provided on the pressing block 232; Wherein, when the end of the limit bar 223 is inside the first notch 2211 or the second notch 2212, the extrusion block 232 is located inside the sliding groove 224. When the limit bar 223 is inside the third notch 2213, the slider 225 drives the extrusion block 232 to pass through the installation groove through the first column 231.

[0035] Furthermore, the positioning assembly 23 further includes a second column 234 provided on one side of the second vertical plate 213. A ring-shaped frame 235 is sleeved on the surface of the second column 234. The second column 234 can slide up and down on the ring-shaped frame 235. One side of the ring-shaped frame 235 is connected to the second vertical plate 213. A second spring 236 is connected to the top of the ring-shaped frame 235. The second spring 236 is sleeved on the surface of the second column 234. And one end of the second spring 236 away from the ring-shaped frame 235 is connected to a force-receiving block 237. A second inclined surface 238 is provided on the force-receiving block 237. The second inclined surface 238 is matched with the first inclined surface 233. One end of the second column 234 is fixedly connected to the force-receiving block 237.

[0036] Furthermore, a positioning groove 1221 is formed on the horizontal rod 122. The positioning groove 1221 is matched with the second column 234. When the second column 234 is inserted into the positioning groove 1221, the second column 234 cannot move. Thus, the ring-shaped frame 235 and the second vertical plate 213 connected to the ring-shaped frame 235 cannot move. Furthermore, the sliding sleeve 211 and the smooth rod 214 connected to the second vertical plate 213, and the dial indicator 13 connected to the smooth rod 214 through the mounting bracket 215 cannot move; Wherein, one or more positioning grooves 1221 can be formed, which does not affect the positioning of the dial indicator 13. The difference between one and multiple is only limited to the position of the dial indicator 13. Forming one has poor flexibility but low cost. Forming multiple increases flexibility but also increases cost.

[0037] The remaining structures are the same as those in Embodiment 2.

[0038] When in use, when it is necessary to fix the dial indicator 13 so that the dial indicator 13 can detect the frame in real time, after adjusting and locking the angle of the mounting bracket 215, continue to rotate the arc plate 221 so that the arc surface of the second notch 2212 of the arc plate 221 contacts the limiting strip 223, driving the limiting strip 223 to move. When the limiting strip 223 moves, it drives the first upright column 231 to move through the slider 225. The slider 225 drives the extrusion block 232 to penetrate out of the chute 224. The first inclined surface 233 on the extrusion block 232 contacts the second inclined surface 238 on the force-bearing block 237, driving the force-bearing block 237 to descend. The force-bearing block 237 squeezes the second spring 236, causing the second spring 236 to contract. At the same time, the force-bearing block 237 drives the second upright column 234 to descend, so that the second upright column 234 enters the positioning groove 1221. When the third notch 2213 corresponds to the position of the limiting strip 223, the positioning of the device is completed, enabling the dial indicator 13 to continuously monitor the surface of the frame at the same position, facilitating the staff to know the deformation degree of the frame in real time.

[0039] In summary, in this embodiment, the deformation test of the frame by the dial indicator 13 is further optimized, enabling the dial indicator 13 to continuously monitor any surface of the frame in real time.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. Anchor cable strand stress relaxation testing device, characterized by: include, A testing mechanism (1) comprising a magnetic base (11), a bracket (12) being arranged on the magnetic base (11), and a micrometer (13) being arranged on the bracket (12); An adjustment mechanism (2) comprises a sliding assembly (21) disposed on a bracket (12), the sliding assembly (21) being connected to a dial gauge (13), the sliding assembly (21) being used for the dial gauge (13) to slide on the bracket (12), an adjustment assembly (22) being provided between the sliding assembly (21) and the dial gauge (13) for adjusting the angle of the dial gauge (13), and a positioning assembly (23) being provided for fixing the dial gauge (13) and the bracket (12).

2. The stress relaxation testing device for anchor cable steel strands according to claim 1, characterized in that: The bracket (12) comprises a vertical rod (121) fixedly connected to the magnetic base (11), and a horizontal rod (122) perpendicular to the vertical rod (121); the horizontal rod (122) is connected to the vertical rod (121) via a shaft sleeve (123); and the horizontal rod (122) can be adjusted in height up and down on the vertical rod (121) via the shaft sleeve (123).

3. The stress relaxation testing device for anchor cable steel strands according to claim 2, characterized in that: The sliding assembly (21) comprises a sliding sleeve (211) slidably mounted on a horizontal rod (122); a first vertical plate (212) and a second vertical plate (213) are arranged on the top of the sliding sleeve (211); a smooth rod (214) is installed between the first vertical plate (212) and the second vertical plate (213); a mounting frame (215) is mounted on the surface of the smooth rod (214); and the mounting frame (215) is connected to the micrometer (13).

4. The stress relaxation testing device for anchor cable steel strands according to claim 3, characterized in that: The adjustment assembly (22) comprises an arc-shaped plate (221) arranged between the first vertical plate (212) and the second vertical plate (213); one end of the arc-shaped plate (221) is connected to the first vertical plate (212) via a rotating shaft.

5. The stress relaxation testing device for anchor cable steel strands according to claim 4, characterized in that: The arc-shaped plate (221) is provided with a first notch (2211), a second notch (2212) and a third notch (2213); notch surfaces of the first notch (2211), the second notch (2212) and the third notch (2213) are all arc surfaces.

6. The stress relaxation testing device for anchor cable steel strands according to claim 5, characterized in that: The adjustment assembly (22) further comprises a toothed ring (222) arranged on the mounting frame (215), the toothed portion of the toothed ring (222) being located inside the toothed ring (222), and a limit strip (223) being arranged between the first vertical plate (212) and the second vertical plate (213), the end of the limit strip (223) being arc-shaped, and the limit strip (223) matching the toothed portion of the toothed ring (222).

7. The stress relaxation testing device for anchor cable steel strands according to claim 6, characterized in that: The adjustment component (22) further comprises a slide groove (224) formed on the smooth rod (214) and the second vertical plate (213); a slider (225) and a first spring (226) are arranged inside the slide groove (224); the top of the slider (225) passes through the slide groove (224) and is connected to the limit bar (223); one end of the first spring (226) is connected to the slider (225), and the other end of the first spring (226) is connected to the inner wall of the slide groove (224).

8. The stress relaxation testing device for anchor cable steel strands according to claim 7, characterized in that: The positioning assembly (23) comprises a first column (231) connected to the slider (225); an end of the first column (231) away from the slider (225) is connected to an extrusion block (232); and a first inclined surface (233) is provided on the extrusion block (232).

9. The stress relaxation testing device for anchor cable steel strands according to claim 8, characterized in that: The positioning assembly (23) further comprises a second column (234) arranged on one side of the second vertical plate (213); a ring frame (235) is sleeved on the surface of the second column (234); the second column (234) can slide up and down on the ring frame (235); one side of the ring frame (235) is connected to the second vertical plate (213); a second spring (236) is connected to the top of the ring frame (235); the second spring (236) is sleeved on the surface of the second column (234); and an end of the second spring (236) away from the ring frame (235) is connected to a force block (237); a second inclined surface (238) is arranged on the force block (237); and the second inclined surface (238) matches the first inclined surface (233); One end of the second column (234) is fixedly connected to the force-bearing block (237).

10. The stress relaxation testing device for anchor cable steel strands according to claim 9, characterized in that: A positioning groove (1221) is provided on the horizontal rod (122), and the positioning groove (1221) matches the second column (234).

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