NPR Anchor Cable Inner Diameter Real-Time Measurement System

Abstract

This utility model provides a measurement system relating to the field of anchor cables. The NPR anchor cable real-time inner diameter measurement system includes a constant resistance body slidably connected inside a constant resistance sleeve. A support ring is positioned on the constant resistance body away from the extrusion end. A detection platform is positioned above the support ring, and a detection tool is fixedly mounted on the detection platform. A wire is connected to the data transmission end of the detection tool. A sealing cap is provided at the anchor-sealing end of the constant resistance sleeve, and the wire passes through the sealing cap and extends to the outside of the sealing cap. This NPR anchor cable real-time inner diameter measurement system solves the problem in existing technologies where the device is fitted onto the outer ring of the anchor cable, and errors easily occur when the anchor cable and the constant resistance sleeve are not concentric. This is achieved by setting the detection platform on the side of the constant resistance body away from the extrusion end and by placing the detection tool above the detection platform to detect changes in the inner diameter of the constant resistance sleeve.

Description

Technical Field

[0001] This utility model relates to the field of anchor cable technology, specifically to an NPR anchor cable inner diameter real-time measurement system. Background Technology

[0002] In the process of in-depth research on the working mechanism of anchor cables, there is a very important deformation state. During the stretching process, the NPR anchor cable sleeve expands radially, and the wall thickness of the sleeve also changes.

[0003] Existing patent CN205642343U describes a real-time measurement system for the inner diameter of an NPR anchor cable. The NPR anchor cable includes a sleeve and a constant resistance body located inside the sleeve. The system comprises: a support member for placement inside the sleeve of the NPR anchor cable; multiple support rods evenly fixed to the outer circumferential wall of the support member, with the extended axis of the support rods perpendicularly intersecting the axis of the NPR anchor cable sleeve; a fixed sleeve, shaped like a straight rod, with one end fixed to a corresponding support rod and the other end having a cylindrical structure; a linear displacement sensor fixed to the other end of the cylindrical structure of the fixed sleeve, the linear displacement sensor having a probe extending out of the fixed sleeve, and the probe's extension direction being the same as the axis of the support rod; and a sliding plate for sliding on the inner wall of the NPR anchor cable sleeve, the probe of the linear displacement sensor being fixed to the sliding plate, and the edge of the sliding plate being bent inwards. This technical solution can measure the inner diameter of the sleeve in real time, providing reliable data for scientific research. However, the traction ring of this device is used to hang on the constant resistance body inside the NPR anchor cable sleeve, and the detection mechanism is sleeved on the surface of the anchor cable. Therefore, detection errors will occur when the anchor cable and the constant resistance sleeve are not concentric. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a real-time measurement system for the inner diameter of NPR anchor cables, which solves the problem of detection errors that occur when the anchor cable and the constant resistance sleeve are not concentric, as mentioned in the background technology.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an NPR anchor cable inner diameter real-time measurement system, including a constant resistance body slidably connected inside a constant resistance sleeve, a support ring provided away from the extrusion end of the constant resistance body, a detection platform provided above the support ring, a detection tool fixedly installed above the detection platform, a wire connected to the data transmission end of the detection tool, a sealing cap provided at the sealing end of the constant resistance sleeve, and the wire passing through the sealing cap and extending to the outside of the sealing cap.

[0007] Furthermore, the portion of the wire used for extension and retraction is stacked inside the constant resistance sleeve, and the wire is snapped into the sealing cap.

[0008] Furthermore, the portion of the wire used for extension and retraction is stacked outside the constant resistance sleeve, and the wire is slidably connected to the sealing cap.

[0009] Furthermore, the detection platform is rotatably connected to the support ring, and a frame is fixedly installed at the end of the detection platform away from the constant resistance body. The end face of the frame is provided with a slip ring that divides the wire into two parts that can slide relative to each other. The frame is connected to a drive unit that drives the detection platform to rotate.

[0010] Furthermore, the frame includes connecting rods, with multiple connecting rods arranged in a ring. The connecting rods are fixedly connected to the detection platform, and a connecting plate is fixedly installed on the side of the connecting rods away from the detection platform.

[0011] Furthermore, the drive unit includes an interface located at the center of the frame end face, with a protrusion inserted inside the interface, and a rotating shaft located on the side of the protrusion away from the frame, extending to the outside of the sealing cover.

[0012] Furthermore, a limiting groove is formed on the outer surface of the support ring, and a limiting ring is provided on the inner ring of the detection platform, which is rotatably connected inside the limiting groove.

[0013] The beneficial effects of this utility model are as follows: 1. The NPR anchor cable inner diameter real-time measurement system solves the problem in the prior art where the device is fitted onto the outer ring of the anchor cable, and the measurement is prone to errors when the anchor cable and the constant resistance sleeve are not concentric. This is achieved by setting a detection platform on the side of the constant resistance body away from the extrusion end face and setting a detection tool above the detection platform to detect changes in the inner diameter of the constant resistance sleeve.

[0014] 2. The NPR anchor cable inner diameter real-time measurement system uses a detection platform that is rotatably connected to a support ring. A frame is fixedly installed at the end of the detection platform away from the constant resistance body. The end face of the frame is provided with a slip ring that divides the conductor into two parts that can slide relative to each other. The frame is connected to a drive unit that drives the detection platform to rotate. This configuration allows the detection platform to rotate, thereby enabling the detection tool to rotate and thus detect the inner diameter at different locations, reducing the number of detection tools required. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the constant resistance body connection of this utility model; Figure 3 This is a schematic diagram of the connection of the testing platform of this utility model; Figure 4 This is a schematic diagram of the connection of the drive unit of this utility model.

[0016] Among them, 1. constant resistance sleeve; 2. constant resistance body; 3. support ring; 4. detection platform; 5. detection tool; 6. wire; 7. sealing cover; 8. frame; 9. slip ring; 10. drive unit; 801. connecting rod; 802. connecting plate; 101. plug interface; 102. protrusion; 103. rotating shaft; 11. limiting groove; 12. limiting ring. Detailed Implementation

[0017] 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.

[0018] See Figures 1-4 The system includes a constant resistance body 2 slidably connected inside the constant resistance sleeve 1. A support ring 3 is positioned on the constant resistance body 2 away from the extrusion end. A detection platform 4 is positioned above the support ring 3, and a detection tool 5 is fixedly mounted on the detection platform 4. The detection tool 5 can be a laser interferometry device. By utilizing the coherence of laser light, a laser beam is split into two beams. One beam illuminates the surface of the object being measured, and the other serves as a reference beam. When the object undergoes minute deformation, the optical path of the reflected light changes, interfering with the reference beam to produce interference fringes. By analyzing the changes in the interference fringes, minute displacements and deformations of the object's surface can be accurately measured.

[0019] Alternatively, random speckle patterns can be created on the object's surface. By capturing images of the speckle patterns before and after deformation, digital image processing techniques can be used to analyze the images and calculate the displacement of the speckles at different locations, thus obtaining the deformation information of the object's surface. This method can measure the full-field deformation of an object's surface with an accuracy typically at the micrometer level. It also has relatively low requirements for the measurement environment and is suitable for objects made of various materials and with complex shapes.

[0020] It could also be the linear displacement sensor mentioned in the cited documents.

[0021] The data transmission end of the detection tool 5 is connected to a wire 6, and the sealing end of the constant resistance sleeve 1 is provided with a sealing cover 7. The wire 6 passes through the sealing cover 7 and extends to the outside of the sealing cover 7. By setting a detection platform 4 on the side of the constant resistance body 2 away from the extrusion end face, and setting a detection tool 5 above the detection platform 4, the change in the inner diameter of the constant resistance sleeve 1 is detected by the detection tool 5. This solves the problem in the prior art that when the device is sleeved on the outer ring of the anchor cable, the detection is prone to errors when the anchor cable and the constant resistance sleeve 1 are not concentric.

[0022] The portion of the wire 6 used for telescopic movement is stacked inside the constant resistance sleeve 1. The wire 6 is snapped into the sealing cover 7. This arrangement ensures that the wire 6 can retract and move within the constant resistance sleeve 1 along with the constant resistance body 2.

[0023] The portion of the wire 6 used for telescopic movement is stacked outside the constant resistance sleeve 1. The wire 6 is slidably connected to the sealing cover 7. This arrangement can reduce the accumulation of the wire 6 inside the constant resistance sleeve 1 and prevent the wires 6 from rubbing against each other.

[0024] The testing platform 4 is rotatably connected to the support ring 3. A frame 8 is fixedly installed at the end of the testing platform 4 away from the constant resistance body 2. The end face of the frame 8 is provided with a slip ring 9 that divides the wire 6 into two parts that can slide relative to each other. The frame 8 is connected to a drive unit 10 that drives the testing platform 4 to rotate. With this arrangement, the testing platform 4 can be rotated to drive the testing tool 5 to rotate, thereby enabling the inner diameter to be tested at different positions and reducing the number of testing tools 5.

[0025] The frame 8 includes connecting rods 801, with multiple connecting rods 801 arranged in a ring. The connecting rods 801 are fixedly connected to the detection platform 4. A connecting plate 802 is fixedly installed on the side of the connecting rods 801 away from the detection platform 4. This arrangement allows the frame 8 to be separated from the detection platform 4, thereby facilitating the connection between the constant resistance body 2 and the anchor cable.

[0026] The drive unit 10 includes an insertion interface 101 located at the center of the end face of the frame 8. A protrusion 102 is inserted into the inside of the insertion interface 101. A rotating shaft 103 is located on the side of the protrusion 102 away from the frame 8. The rotating shaft 103 extends to the outside of the sealing cover 7. This arrangement allows the drive unit 10 and the frame 8 to be separated. The frame 8 is rotated only when in use by the drive unit 10.

[0027] A limiting groove 11 is provided on the outer surface of the support ring 3, and a limiting ring 12 is provided on the inner ring of the detection platform 4, which is rotatably connected inside the limiting groove 11. This arrangement facilitates the rotation of the detection platform 4.

[0028] In use, the anchor cable is fixed to the constant resistance body 2, and the constant resistance body 2 is placed inside the constant resistance sleeve 1. Under the pulling action of the anchor cable, the constant resistance body 2 is displaced relative to the constant resistance sleeve 1, and the constant resistance sleeve 1 is deformed by squeezing it. The detection tool 5 set on the other side of the squeezing end of the constant resistance body 2 can be rotated relative to the constant resistance body 2. The change in the inner diameter of the constant resistance sleeve 1 is detected by the detection tool 5.

[0029] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A real-time measurement system for the inner diameter of NPR anchor cables, comprising a constant resistance body (2) slidably connected inside a constant resistance sleeve (1), characterized in that: The constant resistance body (2) is provided with a support ring (3) away from the extrusion end. A detection platform (4) is provided above the support ring (3). A detection tool (5) is fixedly installed above the detection platform (4). A wire (6) is connected to the data transmission end of the detection tool (5). A sealing cover (7) is provided at the sealing end of the constant resistance sleeve (1). The wire (6) passes through the sealing cover (7) and extends to the outside of the sealing cover (7).

2. The real-time measurement system for the inner diameter of NPR anchor cables according to claim 1, characterized in that: The portion of the wire (6) used for telescopic movement is stacked inside the constant resistance sleeve (1), and the wire (6) is snapped into the sealing cap (7).

3. The real-time measurement system for the inner diameter of NPR anchor cables according to claim 1, characterized in that: The portion of the wire (6) used for telescopic movement is stacked outside the constant resistance sleeve (1), and the wire (6) is slidably connected to the sealing cap (7).

4. The real-time measurement system for the inner diameter of NPR anchor cables according to claim 2 or 3, characterized in that: The detection platform (4) is rotatably connected to the support ring (3). A frame (8) is fixedly installed at the end of the detection platform (4) away from the constant resistance body (2). A slip ring (9) is provided on the end face of the frame (8) to divide the wire (6) into two parts that can slide relative to each other. The frame (8) is connected to a drive unit (10) that drives the detection platform (4) to rotate.

5. The real-time measurement system for the inner diameter of NPR anchor cables according to claim 4, characterized in that: The frame (8) includes connecting rods (801), multiple connecting rods (801) are distributed in a ring, the connecting rods (801) are fixedly connected to the detection platform (4), and a connecting plate (802) is fixedly installed on the side of the connecting rod (801) away from the detection platform (4).

6. The real-time measurement system for the inner diameter of NPR anchor cables according to claim 4, characterized in that: The drive unit (10) includes an interface (101) located at the center of the end face of the frame (8). A protrusion (102) is inserted into the inside of the interface (101). A rotating shaft (103) is located on the side of the protrusion (102) away from the frame (8). The rotating shaft (103) extends to the outside of the sealing cover (7).

7. The real-time measurement system for the inner diameter of NPR anchor cables according to claim 5 or 6, characterized in that: The outer surface of the support ring (3) is provided with a limiting groove (11), and the inner ring of the detection platform (4) is provided with a limiting ring (12) that is rotatably connected inside the limiting groove (11).

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