Anchor cable tension real-time measuring device under flowing water condition

Abstract

The invention discloses an anchor cable tension real-time measuring device under a flowing water condition, and relates to the field of anchor cable tension measuring equipment.The anchor cable tension real-time measuring device comprises a water tank, a vertical platform, a lifting platform, a nylon rope and an embankment breaking head, the vertical platform is connected to the side wall of the water tank, and base tables are fixedly connected to the top and the bottom of the vertical platform respectively; a screw rod is movably connected between the two base tables, the screw rod is in threaded connection with a lifting platform, a cement bottom plate is arranged at the bottom of the water tank, an embankment breaking head is arranged on one side of the cement bottom plate, and a plurality of marking pile points are arranged in the transverse direction of the cement bottom plate at intervals; and a plurality of screws are nailed at the positions of the marking pile points and are fixed with one end of the nylon rope. According to the invention, high-precision, real-time and stable tension measurement can be realized.

Description

Technical Field

[0001] The invention relates to the field of anchor cable tension measurement equipment, and in particular to a real-time anchor cable tension measurement device under dynamic water conditions. Background Art

[0002] The tension of an anchor cable is an important indicator for evaluating its stability and bearing capacity. At present, the general method for measuring the tension of an underwater anchor cable is to select a dynamometer with high precision and stability to ensure the accuracy of the measurement results. The sensor of the dynamometer is installed on the anchor cable, and the initial measurement point of the sensor is determined. After that, the dynamometer is started to record the maximum tension or other relevant data of the anchor cable. This method has many defects, such as: (1) The dynamometer method directly measures the tension of the anchor cable, but in an underwater environment, due to the influence of factors such as water pressure, water flow, and corrosion, the stability and accuracy of the dynamometer may be affected. (2) Installing a dynamometer underwater requires professional diving technology and equipment, and the choice of installation location has a great influence on the measurement results. (3) High-precision and high-stability dynamometers are expensive, which increases the measurement cost.

[0003] Therefore, technical personnel in this field urgently need to provide a real-time measurement device for anchor cable tension under dynamic water conditions to solve the problems of low accuracy and poor stability faced by the existing technology when measuring anchor cable tension under dynamic water conditions, and achieve high-precision, real-time and stable tension measurement. Summary of the invention

[0004] The purpose of the present invention is to provide a real-time measurement device for anchor cable tension under dynamic water conditions, so as to solve the problems of low accuracy and poor stability faced by the prior art when measuring anchor cable tension under dynamic water conditions, and realize high-precision, real-time and stable tension measurement.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention discloses a real-time measuring device for anchor cable tension under dynamic water conditions, comprising a water trough, a vertical platform, a lifting platform, a nylon rope and a dike breaking head, wherein the side wall of the water trough is connected with the vertical platform, the top and bottom of the vertical platform are respectively fixedly connected with a base, a screw is movably connected between the two bases, the screw is threadedly connected with the lifting platform, a cement bottom plate is arranged at the bottom of the water trough, a dike breaking head is arranged on one side of the cement bottom plate, a plurality of marking pile points are arranged at intervals in the transverse direction of the cement bottom plate, and a plurality of screws are located at the positions of the marking pile points and fixed to one end of the nylon rope.

[0007] Preferably, brackets are fixedly connected to the side walls of the lifting platform, support rods are fixedly connected between the brackets, and a fixed pulley is fixedly connected to the middle of the support rods.

[0008] Preferably, a tension sensor is fixedly connected to the side wall of the lifting platform, and the other end of the nylon rope is connected to the access end of the tension sensor after passing around the fixed pulley.

[0009] Preferably, the access end of the tension sensor, the center line of the fixed pulley and the plurality of marking points are located on the same vertical plane.

[0010] Preferably, the vertical platform is located above the broken dike head.

[0011] Preferably, five marking points are provided on the cement base plate.

[0012] Preferably, the screw rod passes through one end of the base of the vertical platform and is fixedly connected with a handle.

[0013] A method for using a real-time measuring device for anchor cable tension under dynamic water conditions comprises the following steps:

[0014] S1: A straight line is set horizontally on the cement floor at the bottom of the water tank. This line is also the measurement axis of this test. A marking stake is set at the same distance on this line. The first stake is 40cm away from the side wall of the water tank. Five stakes are set in sequence, numbered 1# to 5# respectively. At the same time, a screw is driven into each of the five stakes to fix one end of the nylon rope, simulating the rocket anchor cable being driven into the breached riverbed.

[0015] S2: The other end of the nylon rope is connected to the access end of the tension sensor through a fixed pulley. The tension sensor is combined with an intelligent display controller to measure the tension of the nylon rope;

[0016] S3: The fixed pulley and the tension sensor are both installed on a lifting platform, which is fixed on the glass inner wall on one side of the sink, and the central axis of the lifting platform is aligned with the five screws on the cement bottom plate. The lifting platform is raised and lowered by screwing the screw to adjust the angle between the nylon rope and the horizontal plane of the cement bottom plate.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are:

[0018] The present invention adopts a high-precision tension sensor arranged on a vertical platform, which reduces the effect of water flow on the tension sensor, reduces the influence of water flow on measurement accuracy, and realizes high-precision, real-time and stable measurement under strong water flow conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a real-time measuring device for anchor cable tension under dynamic water conditions of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a device for real-time measurement of anchor cable tension under dynamic water conditions of the present invention;

[0022] Figure 3 It is an enlarged structural diagram of the lifting platform of the present invention;

[0023] Figure 4 It is a schematic diagram of the fitting curve of the relationship between the gabion weight and the tension of the present invention.

[0024] Explanation of the accompanying reference numerals: 1. vertical platform; 2. lifting platform; 3. screw; 4. handle; 5. fixed pulley; 6. tension sensor; 7. nylon rope; 8. breaking dike head; 9. screw; 10. cement base plate; 11. water tank. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] like Figure 1-4 As shown, a real-time measurement device for anchor cable tension under dynamic water conditions includes a water trough 11, a vertical platform 1, a lifting platform 2, a nylon rope 7 and a dike breaking head 8. The side wall of the water trough 11 is connected with the vertical platform 1, the top and bottom of the vertical platform 1 are respectively fixedly connected with a base, a screw rod 3 is movably connected between the two bases, and the screw rod 3 is threadedly connected with the lifting platform 2. A cement base plate 10 is provided at the bottom of the water trough 11, and a dike breaking head 8 is provided on one side of the cement base plate 10. A plurality of marking pile points are arranged at intervals in the transverse direction of the cement base plate 10, and a plurality of screws 9 are nailed at the positions of the marking pile points and fixed to one end of the nylon rope 7, simulating the rocket anchor belt anchor cable being driven into the breached riverbed. The anchor cable in the model test adopts a nylon rope 7 which is basically similar to the actual anchor cable in size, has good tensile strength and a smooth surface.

[0027] Specifically, the steel mesh gabion and the anchor cable tension real-time measuring device work in a collaborative relationship. In embankment reinforcement or breach sealing projects, the steel mesh gabion may be used as the main protective structure, while the anchor cable tension real-time measuring device is used to monitor the tension changes of the anchor cables. The anchor cables are used to fix the steel mesh gabion to ensure the stability and safety of the entire protection system.

[0028] Specifically, the design of the broken dike head is used to simulate the actual terrain characteristics of the dike break or breach. In water conservancy projects, the break or breach of the dike is a common safety hazard. By simulating this terrain, the stress state and performance of structures such as anchor cables in similar situations can be more realistically reflected. Near the broken dike head, the water flow conditions usually change significantly, such as faster flow rate and change in flow direction. This change has an important impact on the stress state of structures such as anchor cables. By setting up a broken dike head in the device, these complex water flow conditions can be simulated, so as to more accurately evaluate the stress performance and stability of the anchor cable. The water flow velocity and water pressure at the broken dike head are usually large, which will produce greater local pressure on structures such as anchor cables. By setting up measurement points here, the stress condition and performance of the anchor cable under local pressure can be focused on, providing more detailed data support for engineering design and construction.

[0029] Brackets are fixedly connected to the side walls of the lifting platform 2, support rods are fixedly connected between the brackets, and a fixed pulley 5 is fixedly connected to the middle of the support rods.

[0030] A tension sensor 6 is also fixedly connected to the side wall of the lifting platform 2 , and the other end of the nylon rope 7 is connected to the access end of the tension sensor 6 after passing around the fixed pulley 5 .

[0031] Specifically, the tension sensor uses a high-precision resistance strain sensor, and can display the tension value through the MCK-ZI intelligent display controller with a measurement accuracy of 0.001N.

[0032] The access end of the tension sensor 6, the center line of the fixed pulley 5 and the plurality of marking points are located on the same vertical plane.

[0033] The vertical platform 1 is located above the break dike head 8 .

[0034] Five marking points are arranged on the cement base plate 10. Specifically, the intervals between the five marking points are 10 cm.

[0035] One end of the screw rod 3 passing through the base of the vertical platform 1 is fixedly connected with a handle 4 .

[0036] Specifically, the handle 4 is rotated to drive the screw rod 3 to rotate, thereby driving the lifting platform 2 to move up and down, so that the angle between the nylon rope 7 and the cement base plate 10 can be adjusted.

[0037] The use process of the present invention is as follows: comprising the following steps,

[0038] S1: A straight line is set horizontally on the cement bottom plate 10 at the bottom of the water tank 11. This line is also the measurement axis of this test. A marking stake point is set at the same distance on this line. The first stake point is 40 cm away from the side wall of the water tank 11. Five stake points are set in sequence, numbered 1# to 5# respectively. At the same time, a screw 9 is driven into each of the five stake points to fix one end of the nylon rope 7, simulating the rocket anchor belt anchor cable being driven into the breach riverbed;

[0039] S2: The other end of the nylon rope 7 is wound around the access end of the tension sensor 6 through the fixed pulley 5, and the tension sensor is combined with the intelligent display controller to measure the tension of the nylon rope;

[0040] S3: The fixed pulley 5 and the tension sensor 6 are both installed on a lifting platform 2, which is fixed on the glass inner wall on one side of the water tank 11, and the central axis of the lifting platform 2 is aligned with the five screws 9 on the cement bottom plate 10. The lifting platform 2 is raised and lowered by screwing the screw 3 to adjust the angle between the nylon rope 7 and the horizontal plane of the cement bottom plate 10;

[0041] Since this test studies the hanging weight of the gabion on the anchor cable, the size of the gabion does not need to be considered. To avoid the complexity of the test, the test selected steel mesh gabions of different weights for sliding casting, and finally obtained the fitting curve of the relationship between the gabion weight and the anchor cable tension, as shown in the figure. Figure 4 As shown, this experiment proves the feasibility and efficiency of the device.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A real-time measuring device for anchor cable tension under dynamic water conditions, characterized in that: The invention comprises a water tank (11), a vertical platform (1), a lifting platform (2), a nylon rope (7) and a dike breaking head (8); the side wall of the water tank (11) is connected to the vertical platform (1); the top and bottom of the vertical platform (1) are respectively fixedly connected to a base; a screw rod (3) is movably connected between the two bases; the screw rod (3) is threadedly connected to the lifting platform (2); a cement base plate (10) is arranged at the bottom of the water tank (11); a dike breaking head (8) is arranged on one side of the cement base plate (10); a plurality of marking pile points are arranged at intervals in the transverse direction of the cement base plate (10); a plurality of screws (9) are nailed at the positions of the marking pile points and fixed to one end of the nylon rope (7).

2. The device for real-time measurement of anchor cable tension under dynamic water conditions according to claim 1, characterized in that: Brackets are fixedly connected to the side walls of the lifting platform (2), support rods are fixedly connected between the brackets, and a fixed pulley (5) is fixedly connected to the middle of the support rods.

3. The real-time measurement device for anchor cable tension under dynamic water conditions according to claim 2 is characterized in that: A tension sensor (6) is also fixedly connected to the side wall of the lifting platform (2), and the other end of the nylon rope (7) passes around the fixed pulley (5) and is connected to the access end of the tension sensor (6).

4. The device for real-time measurement of anchor cable tension under dynamic water conditions according to claim 3 is characterized in that: The access end of the tension sensor (6), the center line of the fixed pulley (5) and the plurality of marking points are located on the same vertical plane.

5. The device for real-time measurement of anchor cable tension under dynamic water conditions according to claim 2, characterized in that: The vertical platform (1) is located above the dike breaking head (8).

6. The device for real-time measurement of anchor cable tension under dynamic water conditions according to claim 5, characterized in that: Five marking points are arranged on the cement base plate (10).

7. The real-time measurement device for anchor cable tension under dynamic water conditions according to claim 1 is characterized by: One end of the screw rod (3) passing through the base of the vertical platform (1) is fixedly connected to a handle (4).

8. The method for using the device for real-time measurement of anchor cable tension under dynamic water conditions according to any one of claims 1 to 7, characterized in that: The following steps are included: S1: A straight line is set horizontally on the cement base plate (10) at the bottom of the water tank (11), which is also the measurement axis of this test, and a marking stake point is set at the same interval on this line, the first stake point is 40 cm away from the side wall of the water tank (11), and five stake points are set in sequence, numbered 1# to 5# respectively. At the same time, a screw (9) is driven into each of the five stake points to fix one end of the nylon rope (7), simulating the rocket anchor belt anchor cable being driven into the breach riverbed; S2: The other end of the nylon rope (7) is wound around the access end of the tension sensor (6) through the fixed pulley (5), and the tension sensor is combined with the intelligent display controller to measure the tension of the nylon rope; S3: The fixed pulley (5) and the tension sensor (6) are both installed on a lifting platform (2), which is fixed on the glass inner wall on one side of the water tank (11), and the central axis of the lifting platform (2) is aligned with the five screws (9) on the cement base plate (10). The lifting platform (2) is raised and lowered by screwing the screw rod (3) to adjust the angle between the nylon rope (7) and the horizontal plane of the cement base plate (10).

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