Inward shrinkage value measuring device of stay cable separating plate
The device with telescopic rods and displacement sensors addresses the safety and automation issues of manual measurement, enabling precise and continuous shrinkage value assessment of stay cable wire splitter plates.
Patent Information
- Application Number
- CN202420999853.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-09
AI Technical Summary
Current methods for measuring the shrinkage value of stay cable wire splitter plates are unsafe, prone to large measurement errors, lack automation, and cannot perform continuous measurements, posing risks to technicians and inefficiencies in data collection.
A device comprising a reference head with telescopic rods and displacement sensors, allowing for automated, safe, and continuous measurement of the shrinkage value by aligning the device with the anchor head and using magnetic fixation to secure sensors perpendicular to the wire dividing plate.
Ensures high safety, stable measurement accuracy, and efficient, automated continuous measurement of multiple points, reducing human error and enhancing measurement efficiency.
Smart Images
Figure CN222188261U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge engineering, in particular to a device for measuring the shrinkage value of a stay cable wire splitter plate. Background Art
[0002] In order to check whether the mechanical properties of the cable meet the design requirements, it is necessary to conduct a static load test or fatigue test on the cable, and measure the shrinkage value of the cable wire plate during and after the test. This value represents the displacement of the main force-bearing steel wire of the cable during and after the test, so as to characterize the anchoring performance of the cable.
[0003] The current measurement method generally uses a depth gauge for measurement. First, a steel plate is used to span the end face of the anchor head, and then the reference surface of the depth gauge is pressed against the steel plate. The measuring end of the depth gauge is extended forward to the wire dividing plate by hand, and the measuring end of the depth gauge is pressed against the measuring point with appropriate force. Then the fastening nut of the depth gauge is turned to fix the current position, the depth gauge is taken out and the reading is taken.
[0004] The shortcomings of the depth gauge measurement method are as follows: (1) Insufficient safety. Each measurement requires a technician to stand at the anchor head and manually measure the shrinkage value. During measurement, the cable is under stress, and in the last few stages it is even at 0.90 times the breaking load. If the quality of the cable is not up to standard, it may break, endangering the safety of the measurement personnel. (2) Large measurement errors. The accuracy of the depth gauge measurement is closely related to the proficiency of the person, and the measurement results of people with different technical levels will have large errors. (3) Insufficient automation. Each measurement can only measure one point, and it takes three times to measure three points. It does not have the ability of automated measurement and takes a long time. (4) Continuous measurement is not possible. Due to manual measurement, it can only be measured point by point. The time required for each measurement is uneven, and a continuous measurement curve cannot be formed. Utility Model Content
[0005] Based on this, it is necessary to provide a device for measuring the retraction value of the inclined cable wire plate to address the above problems, so as to solve the problems of insufficient safety, large measurement error, insufficient automation and inability to measure continuously of the depth gauge measurement method.
[0006] A device for measuring the shrinkage value of a stay cable wire splitter plate, comprising:
[0007] Benchmark head;
[0008] A plurality of telescopic rods are installed on the reference head, the plurality of telescopic rods are arranged at intervals along the circumference of the reference head, the plurality of telescopic rods are located on the same plane, and the plane formed by the plurality of telescopic rods is parallel to the wire dividing plate; and
[0009] The displacement sensors are the same in number as the telescopic rods, and the plurality of displacement sensors are respectively mounted on the plurality of telescopic rods, and the displacement sensors are perpendicular to the plane formed by the plurality of telescopic rods.
[0010] In one embodiment, the telescopic rod includes a connecting rod, a push rod and a locking piece, the connecting rod is connected to the reference head, the push rod is provided with a socket, the connecting rod can be adjustably inserted into the socket, and the locking piece is used to fix the relative positions of the connecting rod and the push rod.
[0011] In one embodiment, the connecting rod is provided with an external thread, the insertion hole is provided with an internal thread, and the connecting rod and the insertion hole are threadedly connected.
[0012] In one embodiment, the locking member is a nut, and the locking member is threadedly engaged with the thread of the connecting rod.
[0013] In one of the embodiments, the displacement sensor and the telescopic rod are fixed by magnetic adsorption.
[0014] In one of the embodiments, a base is provided on the displacement sensor, and the base is fixed to the telescopic rod by magnetic adsorption.
[0015] In one embodiment, the base is a magnet, and the telescopic rod is at least partially made of magnetic material.
[0016] In one embodiment, the base is made of magnetic material, and the telescopic rod is at least partially made of magnets.
[0017] In one embodiment, the base is a magnet, the telescopic rod is at least partially made of a magnet, and the magnet of the base and the magnet of the telescopic rod have opposite magnetic properties.
[0018] In one embodiment, the plurality of telescopic rods are evenly spaced apart along the circumferential direction of the reference head.
[0019] The above-mentioned device for measuring the shrinkage value of the cable splitter plate has at least the following advantages:
[0020] Place the device into the anchor head, extend the telescopic rod to abut against the anchor head, fix the device in the anchor head, and keep the plane formed by the multiple telescopic rods parallel to the wire dividing plate, and align the reference head with the center of the anchor head. Then, install the displacement sensor on the telescopic rod, keep the displacement sensor perpendicular to the wire dividing plate and pre-press it. Finally, conduct a mechanical property test of the cable. During the test, the shrinkage value of the wire dividing plate will be reflected in the indication of the displacement sensor, and the indication of the sensor will be collected by the data acquisition instrument. The above-mentioned shrinkage value measuring device of the wire dividing plate of the inclined cable has the characteristics of high safety, stable measurement error, high degree of automation, and continuous measurement, which can greatly improve the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.
[0022] Figure 1 A three-dimensional diagram of a device for measuring the shrinkage value of a stay cable wire splitter plate in one embodiment;
[0023] Figure 2 for Figure 1 The front view of the shrinkage value measuring device of the inclined cable wire plate is shown.
[0024] Reference numerals:
[0025] 1-anchor head, 10-reference head, 20-telescopic rod, 22-connecting rod, 24-top rod, 24-locking piece, 30-displacement sensor, 32-base. DETAILED DESCRIPTION
[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.
[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0029] See also Figure 1 In one embodiment, a device for measuring the shrinkage value of a cable-stayed wire plate includes a reference head 10, a plurality of telescopic rods 20 and a displacement sensor 30.
[0030] The reference head 10 is the foundation of the entire device, providing fixation and support for other components, and the reference head 10 can facilitate the alignment of the center of the device with the center of the anchor head 1. In one embodiment, the reference head 10 is spherical, which can facilitate the determination of the center of the device and the subsequent alignment with the center of the anchor head 1.
[0031] It is understandable that in other embodiments, the shape of the reference head 10 can be specifically set as needed, such as being designed as a cylinder, a cube, etc., as long as it can support the device and facilitate the determination of the center.
[0032] A plurality of telescopic rods 20 are mounted on the reference head 10, and the plurality of telescopic rods 20 are arranged at intervals along the circumferential direction of the reference head 10. The telescopic rods 20 can be extended and retracted, so that after the device is installed in the anchor head 1, it can be extended to support and fixed in the anchor head 1, and the telescopic rods 20 can be shortened to facilitate removal from the anchor head 1. The plurality of telescopic rods 20 are located on the same plane, and when the device is installed in the anchor head 1, the plane formed by the plurality of telescopic rods 20 should be parallel to the wire dividing plate.
[0033] In one embodiment, a plurality of telescopic rods 20 are evenly spaced along the circumferential direction of the reference head 10, and the telescopic rods 20 are evenly distributed, so that the device is evenly stressed when installed in the anchor head 1, and the displacement sensors 30 are evenly distributed on the wire dividing plate.
[0034] In this embodiment, there are three telescopic rods 20, and the three telescopic rods 20 are at an angle of 120 degrees to each other. It is understandable that in other embodiments, the number of telescopic rods 20 is set according to the number of measurement points required by the wire splitting plate, such as 2, four, five, etc.
[0035] Please also read Figure 2 In one embodiment, the telescopic rod 20 includes a connecting rod 22, a top rod 24 and a locking member 26. The connecting rod 22 is connected to the reference head 10. Specifically, the connecting rod 22 is welded to the reference head 10. The top rod 24 is provided with a socket, and the connecting rod 22 is adjustably inserted into the socket. By adjusting the depth of the connecting rod 22 inserted into the socket, the length of the telescopic rod 20 can be adjusted, thereby achieving the telescopic adjustment of the telescopic rod 20. The locking member 26 is used to fix the relative position of the connecting rod 22 and the top rod 24 to prevent the telescopic rod 20 from moving relative to each other after the telescopic adjustment.
[0036] On the basis of the above embodiment, further, the outer wall of the connecting rod 22 is provided with an external thread, the jack is provided with an internal thread, and the external thread of the connecting rod 22 is threadedly connected with the internal thread of the jack, so as to realize the adjustable connection between the connecting rod 22 and the push rod 24. The locking member 26 is a nut, and the locking member 26 is screwed on the thread of the connecting rod 22, and the locking member 26 is located between the reference head 10 and the push rod 24. In this embodiment, the nut is a butterfly nut, which is convenient for manual operation to screw the locking member 26 on the connecting rod 22.
[0037] It is understandable that in other embodiments, the locking member 26 may also be other structures. For example, the locking member 26 may be a screw, and a connecting hole connected to the jack is provided on the side wall of the top rod 24, and the screw passes through the connecting hole and abuts against the connecting rod 22 to fix the relative position of the connecting rod 22 and the top rod 24.
[0038] The number of displacement sensors 30 is the same as that of telescopic rods 20. Multiple displacement sensors 30 are respectively installed on multiple telescopic rods 20. The displacement sensors 30 are perpendicular to the plane formed by the multiple telescopic rods 20. The displacement sensors 30 are used to read the retraction value of the wire dividing plate.
[0039] In one embodiment, the displacement sensor 30 and the telescopic rod 20 are fixed by magnetic adsorption, so that the displacement sensor 30 can be quickly installed on the telescopic rod 20. Further, the displacement sensor 30 is provided with a base 32, and the base 32 and the telescopic rod 20 are fixed by magnetic adsorption.
[0040] In one embodiment, the base 32 may be a magnet, and the telescopic rod 20 is at least partially made of magnetic material. The magnetic base 32 may attract the telescopic rod 20 made of magnetic material, so that the displacement sensor 30 can be installed on the telescopic rod 20 .
[0041] Specifically, the base 32 is fixed to the top rod 24 of the telescopic rod 20 by magnetic adsorption. The cross section of the top rod 24 is square, which can facilitate the magnetic adsorption and fixation of the base 32 and the side wall of the top rod 24. In this embodiment, the magnet can be a permanent magnet, and the material of the top rod 24 can be Q235.
[0042] It is understandable that in other embodiments, the base 32 may be made of a magnetic material, the telescopic rod 20 may at least partially be a magnet, and the base 32 made of a magnetic material may attract the telescopic rod 20 of a specific magnet. Alternatively, the base 32 may be a magnet, the telescopic rod 20 may at least partially be a magnet, the magnets of the base 32 and the telescopic rod 20 may have opposite magnetic attraction, and the magnetism of the base 32 and the telescopic rod 20 may be opposite, so the base 32 and the telescopic rod 20 may attract each other through magnetic force.
[0043] The method for using the above-mentioned device for measuring the shrinkage value of the inclined cable wire dividing plate is specifically as follows:
[0044] Take out the part where the reference head 10 and the connecting rod 22 are connected as a whole, and screw the locking piece 26 on the three connecting rods 22. The position of the locking piece 26 should be close to the reference head 10. Thread the push rod 24 onto the connecting rod 22, and make the distance between the ends of the three push rods 24 and the center of the reference head 10 as consistent as possible, so that the whole device is aligned with the center of the anchor head 1.
[0045] Put the above-mentioned components into the anchor head 1 as a whole, keep the plane formed by the multiple telescopic rods 20 parallel to the wire dividing plate, then twist the top rod 24 to extend the telescopic rod 20 to abut against the inner wall of the anchor head 1, and fix the measuring device in the anchor head 1, paying attention to keeping the center of the measuring device aligned with the anchor head 1. Twist the locking piece 26 to lock the top rod 24 to prevent it from loosening, so as to ensure that the measuring device is firmly installed in the anchor head 1.
[0046] The three displacement sensors 30 are fixed on the three mandrels 24 respectively. The displacement sensors 30 are kept perpendicular to the wire splitting plate during installation, and the displacement sensors 30 should be pre-pressed by about 10 to 20 mm. The mechanical properties test of the cable is carried out. During the test, the shrinkage value of the wire splitting plate will be reflected in the indication of the displacement sensor 30, and the indication of the sensor will be collected by the data acquisition instrument.
[0047] The above-mentioned device for measuring the shrinkage value of the wire splitter plate of the inclined cable uses a mechanical device to fix the three displacement sensors 30 inside the anchor head 1. Once installed, there is no need for technicians to perform measurements and readings nearby, which avoids possible personal injuries caused by the breakage of all inclined cables due to various reasons and improves the safety of the measurement process. Since the displacement sensor 30 is used instead of the depth gauge for measurement, as long as it is correctly installed according to the operating procedures, the error of the entire measurement process has nothing to do with the proficiency of the technicians, but is only determined by the accuracy of the sensor itself, so the measurement error is stable and reliable. At the same time, multiple points on the shrinkage value of the wire splitter plate of multiple anchor heads 1 are measured simultaneously, and the measurement can be completed without human operation during the process, with a high level of automation. Connecting the displacement sensor 30 to the data acquisition system naturally has the advantage of continuous sampling, and the measurement value can be obtained synchronously with the load and deformation data.
[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.
Claims
1. A device for measuring the shrinkage value of a stay cable wire plate, characterized in that: include: Benchmark head; A plurality of telescopic rods are installed on the reference head, the plurality of telescopic rods are arranged at intervals along the circumference of the reference head, the plurality of telescopic rods are located on the same plane, and the plane formed by the plurality of telescopic rods is parallel to the wire dividing plate; and The displacement sensors are the same in number as the telescopic rods, and the plurality of displacement sensors are respectively mounted on the plurality of telescopic rods, and the displacement sensors are perpendicular to the plane formed by the plurality of telescopic rods.
2. The device for measuring the shrinkage value of the stay cable wire plate according to claim 1, characterized in that: The telescopic rod includes a connecting rod, a push rod and a locking piece. The connecting rod is connected to the reference head. The push rod is provided with a socket. The connecting rod can be adjustably inserted into the socket. The locking piece is used to fix the relative positions of the connecting rod and the push rod.
3. The device for measuring the shrinkage value of the stay cable wire plate according to claim 2, characterized in that: The connecting rod is provided with an external thread, the jack is provided with an internal thread, and the connecting rod and the jack are threadedly connected.
4. The device for measuring the shrinkage value of the stay cable wire plate according to claim 3, characterized in that: The locking piece is a nut, and the locking piece is screwed onto the thread of the connecting rod.
5. The device for measuring the shrinkage value of the stay cable wire plate according to any one of claims 1 to 4, characterized in that: The displacement sensor and the telescopic rod are fixed by magnetic adsorption.
6. The device for measuring the shrinkage value of the stay cable wire plate according to claim 5, characterized in that: The displacement sensor is provided with a base, and the base is fixed to the telescopic rod by magnetic adsorption.
7. The device for measuring the shrinkage value of the stay cable wire plate according to claim 6, characterized in that: The base is a magnet, and at least a portion of the telescopic rod is made of magnetic material.
8. The device for measuring the shrinkage value of the stay cable wire plate according to claim 6, characterized in that: The base is made of magnetic material, and at least a portion of the telescopic rod is made of magnets.
9. The device for measuring the shrinkage value of the stay cable wire plate according to claim 6, characterized in that: The base is a magnet, and the telescopic rod is at least partially made of a magnet. The magnets of the base and the telescopic rod have opposite magnetic properties.
10. The device for measuring the shrinkage value of the stay cable wire plate according to claim 1, characterized in that: The plurality of telescopic rods are evenly spaced and arranged along the circumferential direction of the reference head.