Cable force detection assembly of bridge inhaul cable

Abstract

The utility model discloses a cable force detection assembly of a bridge inhaul cable in the technical field of bridge inhaul cable detection, which comprises an annular belt, an adjusting frame rod, a constraint device, a remote controller and a vibration measurement sensor, one end of the annular belt is fixedly connected with the constraint device, the other end of the annular belt can be inserted in the constraint device in a translation manner, a motor and a gear are arranged in the constraint device, and the vibration measurement sensor is connected with the adjusting frame rod. According to the device, a vibration detection method which does not damage an inhaul cable structure is used, personnel do not need to carry out high-altitude operation, the personnel can carry out operation on a bridge floor, the danger of high-altitude operation is avoided, meanwhile, the operation mode is simple, and the device is convenient to use. Tightening and loosening of the ring belt can be controlled on the bridge surface through the remote controller, operation is simple, the angle and height position of the vibration measuring sensor can be adjusted through the adjusting frame rod, the obtained detection result is more accurate, detection operation is simplified, and detection efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge cable detection, in particular to a cable force detection component for bridge cables. Background Art

[0002] Bridge cables are widely used in various types of projects such as arch bridges, cable-stayed bridges, suspension bridges, etc. Among them, cable force is an important parameter of such bridges and needs to be regularly tested and monitored during construction, operation and maintenance.

[0003] The main methods for cable tension testing include cable elongation measurement method, pressure sensor measurement method, vibration frequency method and other methods. Among them, the detection method of the vibration frequency method is a non-destructive test method. It does not require physical destruction or damage to the cable. Compared with other cable tension measurement methods, the vibration method can accurately measure and analyze the vibration of the bridge cable through sensors, and can provide relatively accurate cable tension values ​​through numerical analysis, and its accuracy can meet the application requirements of most working conditions. Therefore, a large number of existing bridge cable tension tests will collect sensor data by tying vibration sensors to the cables and connecting them to cable tension testers or vibration test systems, and measure the random vibration signals of the cables and perform spectrum analysis on the signals to obtain the vibration frequency of the cables. This method of detecting cable tension through vibration data is already a very mature detection method. The key lies in how to collect accurate data.

[0004] At present, when the cable force test is carried out by the vibration method, in order to ensure more accurate test results, it is usually necessary to locate the sensor at different lengths of the cable to collect data. Generally, data collection is required at multiple different position nodes such as 1 / 8, 1 / 4 or even 1 / 2 to obtain more accurate test results. At present, people are sent to the specified height with the help of ladders or aerial lifts, and the vibration sensors are manually tied with straps, which poses the danger of high-altitude operations. In addition, it is easy for the binding to be loose and not close to the cable, and it needs to rely on vehicle machinery and ladders, and requires multiple people to work together. In addition, during the test, the tester needs to adjust the vibration measurement direction, and after the test is completed, the instrument needs to be removed. There are also many situations in which the fixed position of the instrument needs to be re-selected. At this time, the personnel need to go to the corresponding height to work again, which is time-consuming, labor-intensive, and labor-intensive. The operation steps are cumbersome and very inconvenient.

[0005] Based on this, the utility model designs a cable force detection component for a bridge cable to solve the above problem. Utility Model Content

[0006] The purpose of the utility model is to provide a cable force detection component for a bridge cable. The device uses a vibration detection method that does not damage the cable structure. It does not require personnel to perform high-altitude operations. Personnel can operate on the bridge deck, avoiding the danger of high-altitude operations. At the same time, the operation method is simple. The tightening and loosening of the ring belt can be controlled on the bridge deck by a remote control. The operation is simple, and the angle and height position of the vibration sensor can be adjusted by adjusting the frame rod. The entire adjustment process can be completed using only the adjusting frame rod. The length of the adjusting frame rod can be adjusted to adjust the vibration sensor to different height positions of the cable. The detection data is richer, the detection results are more accurate, the detection efficiency is high, no additional lifting equipment is required, and the adjustment does not require coordinated operations such as lifting frames, which simplifies the detection operation and has high detection efficiency.

[0007] The utility model is implemented as follows: a cable force detection component for a bridge cable, comprising:

[0008] Loop belt, adjustment rod, restraint, remote control, and vibration sensor;

[0009] The annular belt is a belt-like structure with a fixed shape, and a gear groove is provided on the annular belt, and the gear groove penetrates one end of the annular belt;

[0010] The restraint is a box body, one end of the ring belt is fixedly connected to the restraint, and the other end of the ring belt can be inserted into the restraint in a translational manner. A motor and a gear are arranged inside the restraint, and the gear is rotatably mounted in the gear slot, and the gear is driven by the motor; the ring belt is controlled to extend and retract by the motor;

[0011] A vibration sensor is also arranged on the outer side of the annular belt;

[0012] The adjusting frame rod is a telescopic rod, a pull rod is arranged at the lower end of the adjusting frame rod, a support plate is arranged at the upper end of the adjusting frame rod, and clamping plates are arranged on the left and right sides of the support plate, the two clamping plates are connected to the pull rod, the two clamping plates can be opened and clamped on the left and right sides of the support plate through the pull rod, and the support plate and the adjusting frame rod are connected by a rotating shaft;

[0013] The motor is data-connected to the remote controller.

[0014] The beneficial effects of the utility model are as follows: 1. The device is provided with a restrainer, which can lock or loosen the ring belt, and does not require manual binding and loosening, thereby eliminating the process of manual tightening. By tightening the ring belt, the vibration sensor can be tied to the cable, and the motor can be rotated in the reverse direction to control the gear to reverse and loosen the ring belt on the restrainer, so that the device can be conveniently slid on the cable to adjust its position;

[0015] 2. This device uses an adjustment frame rod, which can reach the position of cables of different lengths by extending and retracting the adjustment frame rod, and can clamp the restraint through the cooperation of the splint and the support plate, so that the entire restraint and the ring belt can be adjusted at different positions on the cable. The adjustment is convenient and the operation is simple. There is no need for ladders and lifting vehicles to lift personnel, which avoids the risk of personnel working at high altitudes. The position of the restraint can be adjusted by standing on the ground. The vibration sensor is clamped on the ring belt, thereby achieving the effect of binding the vibration sensor at different heights. The vibration data of nodes at different lengths can be easily collected, which facilitates data collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the state in which the ring belt of the utility model is locked on the cable;

[0018] Figure 2 This is a schematic diagram of the structure of the adjusting rack rod of the utility model;

[0019] Figure 3 This is a schematic diagram of the side structure of the adjusting frame rod of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the ring belt and the restraint device of the utility model;

[0021] Figure 5 This is a schematic diagram of the back structure of the ring belt and the restraint device of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the utility model in the disassembled state of the ring belt and the restraint;

[0023] Figure 7 This is a schematic diagram of the structure of the remote controller of the utility model;

[0024] Figure 8 This is a schematic diagram of the motor and gear structure inside the restraint device of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1-annular belt, 11-gear groove, 12-anti-slip pad, 2-adjusting frame rod, 21-pull rod, 22-fixed handle, 23-support plate, 24-clamp plate, 25-rotating shaft, 3-restraint device, 31-motor, 32-gear, 33-slot, 34-remote control, 4-vibration sensor, 41-positioning box cover, 5-pull cable. DETAILED DESCRIPTION

[0027] See also Figures 1 to 8As shown, the utility model provides a cable force detection component for a bridge cable. In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings in the specification and specific implementation methods.

[0028] In a specific embodiment of the technical solution of the utility model:

[0029] It includes a ring belt 1, an adjustment frame rod 2, a restraint device 3, a remote controller 34, and a vibration sensor 4;

[0030] The endless belt 1 is a belt-shaped structure with a fixed shape, and a gear groove 11 is provided on the endless belt 1. The gear groove 11 penetrates one end of the endless belt 1, that is, the gear groove 11 is open at one end of the endless belt 1, so that the endless belt 1 can be inserted and withdrawn from one end of the restraint 3, and the gear groove 11 of the endless belt 1 can be inserted and mounted on the gear 32, and inserted into the restraint 3 through the opening of the endless belt 1 through the gear groove 11; the endless belt 1 is a PVC long strip structure, which has good toughness and certain structural strength, can withstand the adjustment of the tightness of the restraint, and can also slide and be tied to the cable 5. The upper and lower sides of the gear groove 11 are racks, the gear 32 meshes and rotates with the gear groove 11, and the two ends of the gear groove 11 are closed;

[0031] An anti-skid pad 12 is also provided on the inner side of the endless belt 1, which can be a rubber pad to play an anti-skid role. It has a certain toughness and can be tied more firmly to the cable 5.

[0032] The restrainer 3 is a square box body, one end of the endless belt 1 is fixedly connected to the restrainer 3, and the other end of the endless belt 1 can be inserted into the restrainer 3 in a translational manner. A motor 31 and a gear 32 are arranged inside the restrainer 3, and the gear 32 can be rotatably mounted in the gear slot 11, and the gear 32 is driven by the motor 31; the endless belt 1 is controlled to be extended and retracted by the motor 31; a slot 33 is also arranged on the side of the restrainer 3, and the slot 33 penetrates the restrainer 3 to form a channel, one end of the endless belt 1 is slidably arranged in the slot 33, and the gear 32 is fixedly arranged in the slot 33, and the gear 32 and the gear slot 11 are mounted in the channel of the slot 33. It is convenient to rotate and adjust the endless belt 1 through the gear 32, so that the endless belt 1 can slide in translation in the restrainer 3. This structure is similar to the adjustment rack structure on the helmet, both of which are rotated to adjust the tightness, but the device is remotely controlled by the motor 31.

[0033] A vibration sensor 4 is also provided on the outer side of the endless belt 1; a positioning box sleeve 41 is also fixed on the endless belt 1, and the positioning box sleeve 41 is a plastic card slot with a top opening and a closed periphery, and the vibration sensor 4 can be detachably clamped in the card slot of the positioning 41;

[0034] The positioning box sleeve 41 and the vibration sensor 4 are interference fit, which makes it easy to clamp the vibration sensor 4 on the positioning box sleeve 41. After collecting data, the vibration sensor 4 can be removed for data transmission, which is easy to operate and has a simple structure.

[0035] The adjusting frame rod 2 is a telescopic rod, a pull rod 21 is provided at the lower end of the adjusting frame rod 2, a support plate 23 is provided at the upper end of the adjusting frame rod 2, and clamps 24 are provided on the left and right sides of the support plate 23. The two clamps 24 are connected to the pull rod 21, and the two clamps 24 can be opened and clamped on the left and right sides of the support plate 23 through the pull rod 21. The support plate 23 and the adjusting frame rod 2 are connected by a rotating shaft 25; the support plate 23 can be rotated by the rotating shaft 25, and the positioning box sleeve 41 on the cable 5 with various different inclination angles can be clamped at different angles. As long as it can be clamped firmly, the rotation dead angle can be reduced to avoid some dead angles that cannot be clamped in place. The clamps 24 and the support plate 23 can be clamped separately on the outside of the restrainer 3, and can also be clamped on the outside of the positioning box sleeve 41.

[0036] By pressing the pull rod 21 and the fixed handle 22, the mechanism can control the left and right side clamps 24 of the clamping device to shrink and expand. At the same time, for easier installation and debugging, an angle adjustment shaft 25 is set at the top of the adjustment frame rod 2. The shaft 25 can be locked by bolts or can be a shaft with different rotation positioning points. This shaft is often used for rotating mobile phone holders, which can be positioned and supported at various different angles. The device only needs to adjust the range to between 0 and 180 degrees.

[0037] The left and right side clamps 24 are connected by springs, and a steel wire rope is provided at the upper end of the pull rod 21. The steel wire rope at the upper end of the pull rod 21 is connected to the spring between the two clamps. The structure of the entire adjustment frame rod 2 is the same as that of the garbage picker. Both are tightened by the hand-held part to tighten and clamp the front end. The structure is the same, except that the clamps 24 and the support plate 23 of this device are clamped in cooperation with the box body of the restraint 3.

[0038] The motor 31 is connected to the remote controller 34. A battery and a signal receiver are also provided inside the restraint 3. The motor 31 is wirelessly connected to the remote controller 34 through the signal receiver. The motor 31 is electrically connected to the battery. This remote information control belongs to a conventional structure. The motor on the remote control car can be remotely controlled to achieve forward and reverse remote control operation. The remote control of this device and the remote controller 34 for signal transmission are the same as conventional remote control devices. One button controls forward rotation, the other controls reverse rotation, and it is equipped with a switch, which belongs to conventional devices.

[0039] When the utility model is used, the vibration sensor 4 is first placed in the positioning box sleeve 41, and then the PVC ring belt 1 with the gear groove 11 is wrapped around the cable 5, and one end of the ring belt 1 is passed through the automatically locked restrainer 3, at which time there is a large gap between the ring belt 1 and the cable 5. Then the positioning box sleeve 41 is clamped by the adjustment frame rod 2, and the entire device is slid on the cable 5 until it reaches the target height. The motor 31 is controlled to rotate through the remote control 34. After the motor 31 receives the locking signal command, it starts to drive the transmission gear 32 to rotate. Due to the relative rotation displacement between the transmission gear 32 and the gear groove 11 on the ring belt 1, the ring belt passing through the restrainer 3 becomes tighter and tighter, and the ring diameter of the ring belt 1 becomes smaller and smaller, and the general tightening diameter is 5-20cm. In this process, the support plate 23 on the adjustment frame rod 2 keeps the positioning box sleeve 41 lifted, and the clamping plate 24 always keeps the clamping state to adjust the position and direction of the restrainer 3 and the ring belt 1, and also to prevent the device from slipping when it is not in a close contact state. The adjustment frame rod 2 of the device can clamp the restrainer 3 or the positioning box sleeve 41. Clamping any one of them can adjust and clamp and lift the endless belt 1. Generally, it is necessary to choose to clamp the positioning box sleeve 41 so as not to affect the adjustment of the endless belt 1.

[0040] The adjusting rod 2 can be removed only after the ring belt 1 tightens the cable 4. After the test is completed, the adjusting rod 2 is first extended again, and the positioning box sleeve 41 is clamped by the frame plate 24, and then the remote controller 34 is pressed to control the gear 32 to rotate in the opposite direction, so that the ring sleeve diameter of the ring belt 1 becomes larger, that is, it is separated from the cable 5. Finally, the user uses the adjusting rod 2 to lower its height and then recover the instrument.

[0041] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A cable force detection assembly for a bridge cable, characterized in that: include: A ring belt (1), an adjustment rod (2), a restraint device (3), a remote controller (34), and a vibration sensor (4); The annular belt (1) is a belt-shaped structure with a fixed shape, a gear groove (11) is provided on the annular belt (1), and the gear groove (11) penetrates one end of the annular belt (1); The restraint device (3) is a box body, one end of the ring belt (1) is fixedly connected to the restraint device (3), and the other end of the ring belt (1) can be inserted into the restraint device (3) in a translational manner. A motor (31) and a gear (32) are arranged inside the restraint device (3), and the gear (32) can be rotatably clamped in the gear groove (11), and the gear (32) is driven by the motor (31); the extension and retraction of the ring belt (1) is controlled by the motor (31); A vibration sensor (4) is also provided on the outer side of the endless belt (1); The adjusting frame rod (2) is a telescopic rod, a pull rod (21) is arranged at the lower end of the adjusting frame rod (2), a support plate (23) is arranged at the upper end of the adjusting frame rod (2), and clamping plates (24) are arranged on the left and right sides of the support plate (23), the two clamping plates (24) are connected to the pull rod (21), the two clamping plates (24) can be opened and clamped on the left and right sides of the support plate (23) through the pull rod (21), the support plate (23) and the adjusting frame rod (2) are connected through a rotating shaft (25), and the clamping plates (24) and the support plate (23) can be detachably clamped on the outside of the vibration sensor (4); The motor (31) is data-connected to a remote controller (34).

2. The cable force detection assembly for a bridge cable according to claim 1, characterized in that: The clamping plates (24) on the left and right sides are connected via springs, a steel wire rope is provided at the upper end of the pull rod (21), and the steel wire rope at the upper end of the pull rod (21) is connected to the spring between the two clamping plates.

3. The cable force detection assembly for a bridge cable according to claim 1, characterized in that: A slot (33) is also provided on the side of the restraint (3), and the slot (33) penetrates the restraint (3) to form a channel. One end of the ring belt (1) is slidably arranged in the slot (33), and the gear (32) is fixedly arranged in the slot (33), and the gear (32) and the gear slot (11) are clamped in the channel of the slot (33).

4. The cable force detection assembly for a bridge cable according to claim 1, characterized in that: A positioning box sleeve (41) is also fixedly arranged on the endless belt (1), and the positioning box sleeve (41) is a plastic card slot with an opening at the top and closed on all sides, and the vibration sensor (4) can be detachably clamped in the card slot of the positioning box sleeve (41); The positioning box sleeve (41) and the vibration sensor (4) are in interference fit.

5. The cable force detection assembly for a bridge cable according to claim 1, characterized in that: A battery and a signal receiver are also arranged inside the restraint device (3); the motor (31) is wirelessly connected to a remote controller (34) via the signal receiver; and the motor (31) is electrically connected to the battery.

6. The cable force detection assembly for a bridge cable according to claim 1, characterized in that: The endless belt (1) is a PVC strip, the upper and lower sides of the gear groove (11) are both racks, the gear (32) meshes and rotates with the gear groove (11), and the two ends of the gear groove (11) are closed; An anti-slip pad (12) is also provided on the inner side of the ring belt (1).

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