CN215414155U - Multifunctional cable force detector - Google Patents
Multifunctional cable force detector Download PDFInfo
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- CN215414155U CN215414155U CN202121108541.8U CN202121108541U CN215414155U CN 215414155 U CN215414155 U CN 215414155U CN 202121108541 U CN202121108541 U CN 202121108541U CN 215414155 U CN215414155 U CN 215414155U
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- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
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- 201000010099 disease Diseases 0.000 description 7
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 7
- 230000008569 process Effects 0.000 description 5
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- 230000001133 acceleration Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
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Abstract
The utility model discloses a multifunctional cable force detector, belongs to the technical field of traffic detection, and aims to solve the problems of large detection result error and inconvenient cable appearance detection overhead operation caused by unsatisfactory coupling and installation positions of the conventional cable force detector. Comprises a bracket, a cable force sensor and a walking positioning device; the cross section of the bracket is triangular, and three structural surfaces of the bracket limit the cable in the bracket during detection; the cable force sensors are arranged close to the cable, the number of the cable force sensors is three, the tail ends of the cable force sensors are connected with electromagnetic telescopic devices, and each electromagnetic telescopic device is arranged on the inner side surface of the corresponding bracket triangle; the three walking positioning devices are arranged at positions corresponding to the three chamfers of the triangular bracket and are uniformly spaced from the cable force sensor, and the walking positioning devices can drive the bracket and the cable force sensor to freely move along the cable. The utility model can overcome the limitation of high-altitude operation, has simple and rapid operation and strong repeatability, and is convenient for popularization and utilization.
Description
Technical Field
The utility model belongs to the technical field of traffic detection, and particularly relates to a multifunctional cable force detector.
Background
The number of bridges built in China is the first in the world, and with the development of science and technology, the number of bridges with cable structures, such as cable-stayed bridges, suspension bridges, tied arch bridges and the like, in special bridge types is also the first. Since the cable is a very important stressed member in the bridge structure, the cable force detection of the cable is very important and the workload is very enormous during completion/delivery and maintenance of the bridge structure after the construction of the bridge structure.
In the prior art, a cable force testing method mainly comprises a pressure gauge method, a pressure sensor method, a frequency method and a magnetic flux method. In field detection, particularly in later maintenance detection, the simplest and most convenient method is a frequency method.
However, the frequency method is susceptible to some interference factors in field detection:
1. the coupling of the sensor and the cable affects the detection precision; generally, a semicircular outer plate clamping mode or other opposite clamping modes in other shapes are selected for clamping detection, and the coupling performance between a sensor arranged on a cable and the cable is insufficient.
2. Because the two ends of the cable are restrained differently, the placement position of the sensor can also influence the detection precision. In theory, the sensor is ideally placed at the mid-span position of the cable, and in actual field detection, because the cable is generally long and the slenderness ratio of the cable is too large, a detector cannot reach the position to place the sensor, the measured cable force is low in precision and large in error.
3. Most sensors are manual binding type acceleration sensors, appearance detection equipment such as cameras with single functions are matched with the appearance detection equipment, the operation is complex, and the test process is time-consuming and labor-consuming; some detection devices have poor repeatability and low detection workload.
Based on the problems in the background art, the detection personnel provide a multifunctional cable force detector.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a multifunctional cable force detector to solve the problems of large detection result error and inconvenient cable appearance detection overhead operation caused by unsatisfactory coupling and installation positions of the conventional cable force detector.
In order to solve the problems, the technical scheme of the utility model is as follows:
a multifunctional cable force detector comprises a bracket, a cable force sensor and a walking positioning device;
the cross section of the bracket is triangular, and three structural surfaces of the bracket limit the cable in the bracket during detection; the cable force sensors are arranged close to the cable, the number of the cable force sensors is three, the tail ends of the cable force sensors are connected with electromagnetic telescopic devices, and each electromagnetic telescopic device is arranged on the inner side surface of the corresponding bracket triangle;
the three walking positioning devices are arranged at positions corresponding to the three chamfers of the triangular bracket and are uniformly spaced from the cable force sensor, and the walking positioning devices can drive the bracket and the cable force sensor to freely move along the cable.
Furthermore, the outer sides of three vertexes of the triangle of the bracket are movably provided with a camera device.
Furthermore, a distance meter is arranged on the walking positioning device.
Furthermore, each walking positioning device comprises a front wheel and a rear wheel, and the front wheel is connected with the rear wheel through a connecting arm; all the front wheels and the rear wheels are perpendicular to the triangle structure inscribed circle of the support, and the front wheels and the rear wheels are perpendicular to the cable in operation.
Furthermore, the walking positioning device is connected with a power device, and the power device is arranged on any structural surface of the bracket.
Furthermore, the cable force sensor, the electromagnetic telescopic device, the distance measuring instrument and the camera device are all connected with the power supply device and the processor, the power supply device and the processor are connected with each other, the processor and the power device are connected with each other, and the processor is further connected with the wireless signal exchanger.
Furthermore, the power supply device is arranged on one structural surface of the bracket; the wireless signal exchanger and the processor are arranged on one structural surface of the bracket together.
Furthermore, the three structural surfaces of the bracket are movably connected with each other through a connecting device and are made of high-strength and light-weight alloy materials.
The utility model has the following beneficial effects:
(1) the utility model utilizes the bracket structure with the triangular cross section to assist the cable force sensor to clamp the cable, thereby ensuring the full coupling of the cable and the cable force sensor and ensuring the accuracy of the detection result; the free movement of the cable force sensor along the cable is realized by the walking positioning device, the cable force sensor can be placed at the L/3-2L/3 position of the effective length of the cable, the best detection point is changed from theory to reality, and the cable force detection value with high precision and small error is obtained.
(2) A manual binding type acceleration sensor is changed, full-automatic, telescopic and automatic control walking detection is achieved, and through cooperation with a camera device, the appearance condition of the surface of a stay cable or a sheath is observed while rope force detection is achieved, if a disease is found in the ascending process of a walking positioning device, the device can be paused, the position of the disease displayed by a distance meter is checked, the disease is described and recorded, and management and maintenance are facilitated.
(3) The utility model can overcome the limitation of high-altitude operation, more accurately measure the stress condition of the cable, detect the appearance diseases of the cable, has simple and quick operation and strong repeatability, and the detection matching method is popular and easy to understand and is convenient to popularize and utilize.
Drawings
FIG. 1 is a schematic structural diagram of a multifunctional cable force detector;
FIG. 2 is a top view of a multi-functional cable force detector;
fig. 3 is a schematic circuit connection diagram of a multifunctional cable force detector.
The reference numbers are as follows: 1-a scaffold; 11-a connecting means; 2-; 21-an electromagnetic telescopic device; a power supply device; 23-a range finder; 3-a camera device; 4-a walking positioning device; 41-a linker arm; 5-a power plant; 6-wireless signal exchanger; 61-a processor; 7-cable.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
As shown in fig. 1-2, a multifunctional cable force detector comprises a support 1, a cable force sensor 2, and a walking positioning device 4;
the cross section of the bracket 1 is triangular, and three structural surfaces of the bracket 1 are movably connected with each other through a connecting device 11. Three structural surfaces of the cable are used for limiting the cable 7 in the detection process; cable force sensor 2 is close to cable 7 and sets up, and cable force sensor 2 is three, and the end all is connected with electromagnetic telescoping device 21, and every electromagnetic telescoping device 21 all installs the medial surface at the 1 triangle-shaped of corresponding support. The outer sides of three vertexes of the triangle of the bracket 1 are movably provided with the camera device 3.
The three walking positioning devices 4 are arranged at positions corresponding to three triangular chamfers of the support 1 and are uniformly spaced from the cable force sensor 2, and the walking positioning devices 4 can drive the support 1 and the cable force sensor 2 to freely move along the cable 7. Specifically, the method comprises the following steps: each walking positioning device 4 comprises a front wheel and a rear wheel, and the front wheel is connected with the rear wheel through a connecting arm 41; all the front wheels and the rear wheels are perpendicular to the triangle structure inscribed circle of the bracket 1, and the front wheels and the rear wheels are ensured to be perpendicular to the cable 7 during operation.
Any one of the walking positioning devices 4 is provided with a distance meter 23. The cable force sensor 2, the electromagnetic telescopic device 21, the distance measuring instrument 23 and the camera device 3 are all connected with the power supply device 22 and the processor 61, the power supply device 22 and the processor 61 are connected with each other, the processor 61 and the power device 5 are connected with each other, and the processor 61 is further connected with the wireless signal exchanger 6.
The walking positioning device 4 is connected with a power device 5, and the power device 5 is arranged on any structural surface of the bracket 1; the power supply device 22 is arranged on one structural surface of the bracket 1; the wireless signal exchanger 6 and the processor 61 are arranged on one structural surface of the bracket 1 together.
In this embodiment:
three structural surfaces of the bracket 1 are made of high-strength light alloy materials, so that the strength and the rigidity of the whole structure are maximized, and the self weight is minimized.
The camera device 3 is three high-definition and zooming cameras, and the three cameras are configured according to the corner, so that dead angle-free detection of the cross section of the whole stay cable is ensured.
The power device 5 is a replaceable battery device and supplies power to the walking positioning device 4, so that the power device is convenient to disassemble and supply power.
The front wheels and the rear wheels of the walking positioning device 4 are detachable soft rubber wheels, and the 3 groups of front wheels and the rear wheels comprise 4 driving wheels and 2 driven wheels, so that the walking positioning device can stably crawl along a cable within the angle range of 0-90 degrees in operation. All the soft rubber wheels are perpendicular to the inscribed circle of the triangular structure, so that the stability of the utility model in the operation process is ensured.
The distance measuring instrument 23 is a high-precision distance measuring counting wheel and is used for accurately positioning the measuring position of the cable force sensor 2 and the position of the appearance defect along with the movement of the walking positioning device 4.
The work of the utility model comprises the following steps:
1. cable force detection
1) The walking positioning device 4 is started to drive the whole device to climb upwards along the cable 7, and meanwhile, the wireless signal exchanger 6 is watched to send back to the ground and receive various groups of data on the mobile phone or the computer.
2) The prepositioning of the detection position is generally the L/3-L/2 position of the effective length of the cable, the L/2 position of the effective length of the suspender, the cable sag is the largest in the position range, when the positioning data of the distance meter 23 displayed on a mobile phone or a computer shows that the position of the cable force sensor 2 reaches the preset position, the processor 61 is controlled by a wireless device on the ground to start the electromagnetic telescopic device 21, so that the cable force sensor 2 is tightly attached to the cable 7 or a cable sheath, and the tight and stable attachment can be ensured.
3) And starting the cable force sensor 2, measuring the vibration frequency of the cable 7 or the suspender, detecting the same cable 7 or the suspender in parallel twice, and converting the parallel detection results of the two times into the internal force of the cable 7 or the suspender by using a formula if the parallel detection results are within a specified error range.
4) After the cable force measurement is finished, the wireless device control processor 61 on the ground is used again to start the electromagnetic expansion device 21, the electromagnetic expansion device is retracted, the cable force sensor 2 is far away from the cable 7 or the cable sheath, the walking positioning device 4 is started again, the walking is performed in the reverse direction, and the bridge floor is slowly descended.
5) Calculating the test result by using the formula
Calculating the cable force of the cable; in the formula: t is cable force (unit: kN); n is the order of the natural vibration frequency of the cable; f. ofnIs the nth order natural frequency of the cable; l is the effective cable length; and m is the linear density of the stay cable (the overall linear density is obtained when a sheath is arranged on the outer side of the stay cable).
2. Appearance detection
1) And (3) installing and connecting a camera device 3, and checking whether the installation angle of the camera device 3 covers the whole section of the inhaul cable. The walking positioning device 4 is started to drive the whole device to climb upwards along the cable 7, the distance measuring instrument 23 is started, and meanwhile, the wireless signal exchanger 6 is watched to send back to the ground and receive various groups of data on the mobile phone or the computer.
2) When the appearance condition of the surface of the inhaul cable or the sheath is observed, if a disease is found in the ascending process of the walking positioning device, the device can be paused, the position of the disease displayed by the distance meter can be checked, the disease can be described and recorded, and the management and the maintenance are convenient.
3) And repeating the steps until the appearance condition of the complete cable 7 is detected, operating the processor 61 by using the wireless device on the ground again to start the electromagnetic expansion device 21, withdrawing the electromagnetic expansion device, keeping the cable force sensor 2 away from the cable 7 or the cable sheath, starting the walking positioning device 4 again, walking reversely, slowly descending to the bridge floor, and replacing the next cable.
It should be noted that the specific model specification of each electrical component needs to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.
The power supply of the motor 310 and the power push rod 370 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.
Claims (8)
1. The utility model provides a multi-functional cable force detector, includes support (1), cable force transducer (2), its characterized in that: the walking positioning device (4) is also included;
the cross section of the bracket (1) is triangular, and the cable (7) is limited in the three structural surfaces when in detection; the cable force sensors (2) are arranged close to the cable (7), the number of the cable force sensors (2) is three, the tail ends of the cable force sensors are connected with electromagnetic telescopic devices (21), and each electromagnetic telescopic device (21) is arranged on the inner side surface of the corresponding triangle of the support (1);
the three walking positioning devices (4) are arranged at positions corresponding to three triangular chamfers of the support (1) and are uniformly spaced from the cable force sensor (2), and the walking positioning devices (4) can drive the support (1) and the cable force sensor (2) to freely move along the cable (7).
2. The multi-functional cable force detector of claim 1, characterized in that: and the outer sides of three vertexes of the triangle of the bracket (1) are movably provided with a camera device (3).
3. The multi-functional cable force detector of claim 2, characterized in that: the walking positioning device (4) is provided with a positioning device.
4. The multi-functional cable force detector of claim 3, characterized in that: each walking positioning device (4) comprises a front wheel and a rear wheel, and the front wheel is connected with the rear wheel through a connecting arm (41); all the front wheels and the rear wheels are perpendicular to the triangle structure inscribed circle of the bracket (1), and the front wheels and the rear wheels are perpendicular to the cable (7) during operation.
5. The multi-functional cable force detector of claim 4, characterized in that: the walking positioning device (4) is connected with a power device (5), and the power device (5) is arranged on any structural surface of the support (1).
6. The multi-functional cable force detector of claim 5, characterized in that: the cable force sensor (2), the electromagnetic telescopic device (21), the distance measuring instrument (23) and the camera device (3) are connected with a power supply device (22) and a processor (61), the power supply device (22) and the processor (61) are connected with each other, the processor (61) and the power device (5) are connected with each other, and the processor (61) is further connected with a wireless signal exchanger (6).
7. The multi-functional cable force detector of claim 6, characterized in that: the power supply device (22) is arranged on one structural surface of the bracket (1); the wireless signal exchanger (6) and the processor (61) are arranged on one structural surface of the bracket (1) together.
8. The multi-functional cable force detector of claim 1, characterized in that: the three structural surfaces of the bracket (1) are movably connected with each other through a connecting device (11) and are made of high-strength light alloy materials.
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| CN202121108541.8U CN215414155U (en) | 2021-05-24 | 2021-05-24 | Multifunctional cable force detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121108541.8U CN215414155U (en) | 2021-05-24 | 2021-05-24 | Multifunctional cable force detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116086676A (en) * | 2023-02-16 | 2023-05-09 | 同济大学 | Multi-point vibration observation system based on movable adjustable non-contact sensor array |
| CN116086676B (en) * | 2023-02-16 | 2024-05-31 | 同济大学 | Multi-point vibration observation system based on movable adjustable non-contact sensor array |
-
2021
- 2021-05-24 CN CN202121108541.8U patent/CN215414155U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116086676A (en) * | 2023-02-16 | 2023-05-09 | 同济大学 | Multi-point vibration observation system based on movable adjustable non-contact sensor array |
| CN116086676B (en) * | 2023-02-16 | 2024-05-31 | 同济大学 | Multi-point vibration observation system based on movable adjustable non-contact sensor array |
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Effective date of registration: 20240117 Address after: Room 401-416, 4th Floor, Zone A, Comprehensive R&D Building, No. 1900 Songhuajiang Street, Lanzhou New Area, Lanzhou City, Gansu Province, 730300 Patentee after: Gansu Provincial Traffic Environment Monitoring Center Co.,Ltd. Address before: 730030 No. 127, Heping new village, Chengguan District, Lanzhou City, Gansu Province Patentee before: Gansu Academy of Transportation Sciences Group Co.,Ltd. |