Portable concrete pole mechanical property detection device and use method

Abstract

The application provides a portable concrete pole mechanical property detection device and a use method thereof. The device comprises a test support, a data acquisition device, a power output device and a test host. The concrete pole is fixed on the test support. The data acquisition device is arranged on the concrete pole. The power output device is arranged at the lower end of the test support and is connected with the concrete pole through a steel wire rope. The test host is connected with the data acquisition device and the power output device. In use, the model of the concrete pole is determined first, then the test mode is determined and the device is zeroed, and finally the concrete pole is loaded, and the cracking of the concrete pole is detected and recorded. The portable concrete pole mechanical property detection device and the use method thereof have the advantages that the device is convenient to carry, the platform building work can be completed through simple assembly, the tensile deflection test can be realized, the data can be directly read, and the detection calculation precision is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment detection, in particular to a portable concrete pole mechanical property detection device and use method. BACKGROUND

[0002] Overhead line is the main method of power transmission, and the concrete pole is used as the support of the line. The quality of the concrete pole affects the operation of the whole line. At present, the national standard adopted by the production and monitoring standard of the ring-shaped concrete pole is GB 4623-2014, which requires that the concrete pole should be subjected to necessary tensile deflection detection test before leaving the factory. The detection needs to be carried out on the special equipment built in the factory area of the cement pole processing plant, but it cannot meet the product sampling inspection on the construction site. At present, many manufacturers still use manual chain hoists to load and unload, and the loading speed and precision are difficult to control and guarantee. Therefore, it is necessary to design a portable concrete pole mechanical property detection device and use method. SUMMARY

[0003] The purpose of the present application is to provide a portable concrete pole mechanical property detection device and use method, which is convenient to carry and easy to operate. The platform building work can be completed by simple assembly, the tensile deflection detection test can be realized, and the data can be directly read. The method improves the detection calculation precision.

[0004] To achieve the above purpose, the present application provides the following scheme:

[0005] A portable concrete pole mechanical property detection device, comprising: a test support, a data acquisition device, a power output device and a test host, the test support is fixed with a concrete pole, the data acquisition device is arranged on the concrete pole and used for acquiring mechanical data of the concrete pole, the power output device is arranged at the lower end of the test support and connected with the concrete pole through a steel wire rope, and is used for applying load to the concrete pole, and the test host is connected with the data acquisition device and the power output device.

[0006] The test support comprises a horizontal support arranged horizontally, a plurality of fixing supports are arranged on the upper surface of the horizontal support and used for fixing the concrete pole, a downward inclined support is connected to the right side of the horizontal support, the power output device and a plurality of guide wheels are arranged on the lower surface of the inclined support from left to right, the steel wire rope is wound around the guide wheels, one end of the steel wire rope is connected with the power output device, and the other end of the steel wire rope is connected with the concrete pole.

[0007] The data acquisition device comprises a pull rope displacement sensor, a tension sensor and a plurality of linear displacement sensors, the plurality of linear displacement sensors are arranged at the root of the concrete pole, the pull rope displacement sensor is arranged at the tip of the concrete pole, and the tension sensor is arranged on the steel wire rope connected with the concrete pole.

[0008] The test host comprises an upper computer and a touch screen, the upper computer is connected with the data acquisition device, the touch screen and a power output device, and the touch screen is used for controlling the upper computer and displaying data.

[0009] Optionally, the plurality of fixing supports comprise a first fixing support and a second fixing support, the first fixing support comprises a first U-shaped timber, a second U-shaped timber, a first connecting plate, a second connecting plate, a third connecting plate and a stud, the first U-shaped timber is arranged on the upper surface of the horizontal support, the concrete pole is arranged in the U-shaped groove of the first U-shaped timber, the second U-shaped timber is correspondingly sleeved on the upper surface of the concrete pole, the first connecting plate is arranged on the top of the second U-shaped timber, the second connecting plate is arranged on the bottom of the first U-shaped timber, the third connecting plate is arranged on the lower surface of the horizontal support corresponding to the positions of the first U-shaped timber and the second U-shaped timber, the stud is sequentially threaded through the first connecting plate, the second U-shaped timber, the first U-shaped timber, the second connecting plate and the third connecting plate to fix the concrete pole on the horizontal support, and the second fixing support is arranged on the lower surface of the concrete pole.

[0010] Optionally, the test support further comprises a plurality of fixing pieces, the guide wheels are fixedly arranged on the lower surface of the inclined support through the fixing pieces, and the arrangement positions of the plurality of guide wheels are determined according to the measured length of the concrete pole.

[0011] Optionally, the portable concrete pole mechanical property detection device further comprises a plurality of rolling supports, and the plurality of rolling supports are movably arranged on the concrete pole and used for eliminating the dead weight of the concrete pole.

[0012] Optionally, the horizontal support and the inclined support each comprise at least one assembly, adjacent assemblies are fixedly connected, the assembly comprises a rectangular frame, two vertical rods and four inclined rods are arranged in the frame, the vertical rods are arranged parallel to the side edges of the frame and between the upper surface and the lower surface of the front and rear sides of the frame, respectively, and two inclined rods are arranged on each of the front and rear sides of the frame.

[0013] Optionally, the linear displacement sensors include a first linear displacement sensor and a second linear displacement sensor. The first linear displacement sensor is disposed on the upper side of the root end of the concrete pole, the second linear displacement sensor is disposed on the lower side of the concrete pole at the connection between the horizontal support and the inclined support, the rope displacement sensor is disposed on the upper side of the tip of the concrete pole, and the tension sensor is disposed on the wire rope connecting the power output device and the concrete pole for detecting the tension of the wire rope.

[0014] Optionally, the host computer is an S5P6818 development board, and the power output device is an electric cylinder.

[0015] Optionally, the test host also includes a communication module, a positioning module, and a camera. The positioning module and the camera are connected to the host computer and are used to collect positioning information and monitoring video. The host computer communicates with the background monitoring host through the communication module and is used to transmit the positioning information and monitoring video to the background monitoring host.

[0016] The present invention also provides a method for using a portable concrete pole mechanical performance testing device, comprising the following steps:

[0017] Step 1: Identify the model of the concrete pole by manual input or scanning, select the appropriate testing standard for the concrete pole based on the model, and determine the testing method.

[0018] Step 2: Place the concrete pole on the test support, select the guide wheel according to the model identified in Step 1, increase the tension of the power output device to 20% of the full load, and unload it to the initial state. Set the value of the data acquisition device to zero.

[0019] Step 3: After zeroing, increase the tension of the power output device to 20%, 40%, 60%, 80%, 90%, and 100% of the full load, respectively. After each loading, let it stand still for 3 minutes, and check and record the cracking of the concrete pole.

[0020] According to specific embodiments provided by the present invention, the following technical effects are disclosed: The portable concrete pole mechanical performance testing device and method provided by the present invention are portable, simple in structure, and require only simple assembly to complete the platform construction. Tensile deflection testing can be performed on-site, and data can be read intuitively. This method improves the accuracy of the test calculation data. The test support includes a horizontal support and an inclined support, both assembled from components, facilitating disassembly, assembly, and transportation. The upper surface of the horizontal support is provided with a first fixed support and a second fixed support. The two fixed supports cooperate to fix the concrete pole on the test support. The first fixed support fixes the concrete pole on the test support through a connecting plate, double-ended bolts, and U-shaped wooden blocks, resulting in a stable structure and facilitating the test. Depending on the length of the concrete pole, multiple rolling supports are provided on the concrete pole to eliminate its own weight, making the test data more accurate. The system employs an electric cylinder for tensile force output, allowing for precise control of loading and unloading with low operating noise and easy installation. The data acquisition device utilizes a rope displacement sensor, a tension sensor, and two linear displacement sensors to accurately monitor the mechanical properties of the concrete pole, facilitating subsequent calculations. The inclined support features multiple guide wheels, each equipped with a steel wire rope. The electric cylinder applies tension to the concrete pole via these ropes, making it suitable for poles of varying lengths. The system includes a host computer, a touchscreen, a communication module, a positioning module, and a camera. Data acquisition can be viewed on the touchscreen, and the host computer can be controlled. The camera captures video monitoring, the positioning module collects location information, and the host computer transmits the acquired information to the backend monitoring host via the communication module for easy viewing and recording by backend staff. Zeroing the data acquisition device before the tensile deflection test improves the accuracy of the inspection. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the portable concrete pole mechanical performance testing device according to an embodiment of the present invention;

[0023] Figure 2 This is a front view of the connection structure between the test support and the concrete pole;

[0024] Figure 3 This is a top view of the connection structure between the test support and the concrete pole;

[0025] Figure 4 This is the front view of the test support structure;

[0026] Figure 5 This is a flowchart illustrating the method of using the portable concrete pole mechanical performance testing device of the present invention.

[0027] Reference numerals: 1. First fixed support; 101. First U-shaped wooden block; 102. Second U-shaped wooden block; 103. First connecting plate; 104. Second connecting plate; 105. Third connecting plate; 106. Double-ended bolt; 2. Horizontal support; 3. Inclined support; 4. Rolling support; 5. Second fixed support; 6. Power output device; 7. Steel wire rope; 8. Guide wheel; 9. Assembly; 901. Frame; 902. Vertical rod; 903. Inclined rod; 10. Fixing plate; 11. Concrete pole; 12. First linear displacement sensor; 13. Second linear displacement sensor; 14. Test host; 15. Tension sensor; 16. Cable displacement sensor. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The purpose of this invention is to provide a portable mechanical performance testing device for concrete poles and its usage method. This device is easy to carry and operate. The platform can be built through simple assembly to realize tensile deflection testing and data can be read intuitively. This method improves the accuracy of testing and calculation.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 As shown in the figure, the portable concrete pole mechanical performance testing device provided in this embodiment of the invention includes: a test support, a data acquisition device, a power output device 6, and a test host 14. The concrete pole 11 is fixed on the test support. The data acquisition device is set on the concrete pole 11 and is used to collect the mechanical data of the concrete pole 11. The power output device 6 is set at the lower end of the test support and is connected to the concrete pole 11 through a steel wire rope 7 and is used to apply a load to the concrete pole 11. The test host 14 is connected to the data acquisition device and the power output device 6.

[0032] The test support is a truss structure, including a horizontally arranged horizontal support 2. Several fixed supports are provided on the upper surface of the horizontal support 2 for fixing the concrete pole 11. An inclined support 3 is connected to the right side of the horizontal support 2 and is inclined downward. The power output device 6 and multiple guide wheels 8 are arranged sequentially from left to right on the lower surface of the inclined support 3. Steel wire ropes 7 are wound on the multiple guide wheels 8. One end of the steel wire rope 7 is connected to the power output device 6 and the other end is connected to the concrete pole 11.

[0033] The data acquisition device includes a rope displacement sensor 16, a tension sensor 15, and several linear displacement sensors. The several linear displacement sensors are installed at the base of the concrete pole 11, the rope displacement sensor 16 is installed at the tip of the concrete pole 11, and the tension sensor 15 is installed on the wire rope 7 connected to the concrete pole 11.

[0034] The test host 14 includes a host computer and a touch screen. The host computer is connected to the data acquisition device, the touch screen and the power output device 6. After the data acquisition device acquires data, it transmits the data to the host computer using the MODBUS protocol and the 485 transmission method.

[0035] like Figures 2-3 As shown, the plurality of fixed supports include a first fixed support 1 and a second fixed support 5.

[0036] The aforementioned fixed supports include a first fixed support 1 and a second fixed support 5. The first fixed support 1 includes a first U-shaped wooden pad 101, a second U-shaped wooden pad 102, a first connecting plate 103, a second connecting plate 104, a third connecting plate 105, and a double-ended bolt 106. The first U-shaped wooden pad 101 is disposed on the upper surface of the horizontal support 2, and the concrete pole 11 is disposed in the U-shaped groove of the first U-shaped wooden pad 101. The second U-shaped wooden pad 102 is correspondingly sleeved on the upper surface of the concrete pole 11, and the first connecting plate 103 is disposed on the upper surface of the horizontal support 2. The second U-shaped pad 102 is located at the top, the second connecting plate 104 is located at the bottom of the first U-shaped pad 101, and the third connecting plate 105 is located on the lower surface of the horizontal support 2 corresponding to the positions of the first U-shaped pad 101 and the second U-shaped pad 102. The double-headed bolt 106 passes through the first connecting plate 103, the second U-shaped pad 102, the first U-shaped pad 101, the second connecting plate 104, and the third connecting plate 105 in sequence to fix the concrete pole 11 on the horizontal support 2. The second fixing support 5 is a pad and is located on the lower surface of the concrete pole 11.

[0037] The test support also includes multiple fixing plates 10. The guide wheels 8 are set on the lower surface of the inclined support 3 through the fixing plates 10. The setting positions of the multiple guide wheels 8 are determined according to the measured length of the concrete pole 11. The present invention is mainly used to detect tapered concrete poles. In one embodiment of the present invention, the detection range is 10 meters to 15 meters of concrete pole 11, wherein there are three fixing plates 10 and three guide wheels 8, which are respectively set at the loading points of the 10-meter concrete pole, the 12-meter concrete pole, and the 15-meter concrete pole.

[0038] The portable concrete pole mechanical performance testing device also includes multiple rolling supports 4, which are movably mounted on the concrete pole 11 to eliminate the self-weight of the concrete pole 11. The number of rolling supports 4 is determined according to the length of the concrete pole 11.

[0039] like Figure 4 As shown, both the horizontal support 2 and the inclined support 3 include at least one assembly 9. Adjacent assemblies 9 are fixedly connected. The assembly 9 is based on a circular steel pipe and is assembled by segmented welding and flange connection, which facilitates assembly and disassembly. Specifically, the assembly 9 includes a rectangular frame 901. The frame 901 is provided with two vertical rods 902 and four inclined rods 903. The vertical rods 902 are arranged parallel to the side of the frame 901 and are respectively arranged between the upper and lower surfaces of the front and rear sides of the frame 901. Two inclined rods 903 are inclinedly arranged on each of the front and rear sides of the frame 901.

[0040] The linear displacement sensors include a first linear displacement sensor 12 and a second linear displacement sensor 13. The first linear displacement sensor 13 is located on the upper side of the root end of the concrete pole 11, and the second linear displacement sensor 13 is located on the lower side of the concrete pole 11 at the connection between the horizontal support 2 and the inclined support 3. The rope displacement sensor 16 is located on the upper side of the tip of the concrete pole 11. According to national standards, the two linear displacement sensors and the rope displacement sensor 16 serve as a three-point displacement acquisition device for the entire concrete pole. The tension sensor 15 is located on the steel wire rope 7 connecting the power output device 6 and the concrete pole 11, and is used to detect the tension of the steel wire rope 7. The first linear displacement sensor 12 and the second linear displacement sensor 13 are self-resetting linear displacement sensors, and the tension sensor 15 is an AC 220V powered, 0 to 2000KG tension sensor.

[0041] The host computer is an S5P6818 development board, and the software is developed using the Android system. The power output device 6 is a 750W A4782-75-1000 electric cylinder, which can be set with software frequency to precisely control the speed of extension and retraction during unloading and loading. It has extremely low operating noise, is lightweight and convenient to install, and is equipped with extension and retraction limit switches to ensure safe and stable operation.

[0042] The test host 14 also includes a communication module, a positioning module, and a camera. The positioning module and the camera are connected to the host computer and are used to collect positioning information and monitoring video. The host computer communicates with the background monitoring host through the communication module and is used to transmit the positioning information and monitoring video to the background monitoring host.

[0043] The present invention also provides a method for using a portable concrete pole mechanical performance testing device, comprising the following steps:

[0044] Step 1: Identify the model of the concrete pole by manual input or scanning, select the appropriate testing standard for the concrete pole based on the model, and determine the testing method.

[0045] Step 2: Place the concrete pole on the test support, select the guide wheel according to the model identified in Step 1, increase the tension of the power output device to 20% of the full load, and unload it to the initial state. Set the value of the data acquisition device to zero.

[0046] Step 3: After zeroing, according to national standards, increase the tension of the power output device to 20%, 40%, 60%, 80%, 90%, and 100% of the full load respectively. After each loading, stop for 3 minutes and check and record the cracking of the concrete pole.

[0047] There are two types of inspection methods for concrete poles: one is factory inspection, where the maximum tensile force is 100% of the national standard's specified tensile force. For example, the maximum tensile force for a 15-meter tapered concrete pole is 6000N. The other is cracking inspection, which is a destructive test. Again, taking a 15-meter tapered concrete pole as an example, the maximum tensile force is 12000N.

[0048] According to the relevant provisions of the national standard GB 4623-2014 on the loading speed range, after precise calculation, the retraction speed of the electric cylinder is precisely controlled at 3mm / s during loading, so that the loading process fully complies with the relevant provisions of the national standard; during unloading, taking into account various practical application conditions, the speed is set to 6mm / s, and the speed setting is controlled by the host computer to control the electric cylinder.

[0049] After the test is completed, the host computer can transmit the test data to the background monitoring host through the communication module for easy management later. As needed, a printer can be added to enable on-site printing of the test report after the test is completed.

[0050] After the host computer is powered on, it can automatically start the time accumulation and statistics function. When the usage time limit (2000 hours) is reached, it will automatically prompt the user to perform the return to factory progress adjustment work when the computer is powered on, which helps to ensure accuracy.

[0051] The testing chamber is equipped with a manual control mode, which allows the testing process to be completed manually in the event of a software control failure.

[0052] This invention provides a portable concrete pole mechanical performance testing device and its usage method. The device is portable, simple in structure, and requires only simple assembly to complete the platform setup. It can perform tensile deflection testing on-site and provides intuitive data reading. This method improves the accuracy of the test calculation data. The test support includes a horizontal support and an inclined support, both assembled from modular components for easy disassembly, assembly, and transportation. The upper surface of the horizontal support is equipped with a first fixed support and a second fixed support. The two fixed supports cooperate to fix the concrete pole to the test support. The first fixed support is secured to the concrete pole by a connecting plate, double-ended bolts, and U-shaped wooden blocks, resulting in a stable structure and facilitating testing. Depending on the length of the concrete pole, multiple rolling supports are installed on the concrete pole to eliminate its own weight, making the test data more accurate. An electric cylinder is used for tensile force output. It can precisely control loading and unloading with low operating noise and is lightweight and easy to install. The data acquisition device uses a rope displacement sensor, a tension sensor, and two linear displacement sensors to accurately monitor the mechanical properties of concrete poles, facilitating subsequent calculations. The tilting support is equipped with multiple guide wheels, each with a steel wire rope. The electric cylinder applies tension to the concrete pole via the steel wire rope, making it suitable for concrete poles of different lengths. The system includes a host computer, a touchscreen, a communication module, a positioning module, and a camera. Data can be viewed on the touchscreen, and the host computer can be controlled. The camera captures video monitoring, the positioning module collects location information, and the host computer transmits the collected information to the backend monitoring host via the communication module for easy viewing and recording by backend staff. Zeroing the data acquisition device before the tensile deflection test improves the accuracy of the inspection.

[0053] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A portable device for testing the mechanical properties of concrete utility poles, characterized in that, include: The test support includes a test stand, a data acquisition device, a power output device, and a test host. A concrete pole is fixed on the test stand. The data acquisition device is installed on the concrete pole to collect mechanical data of the concrete pole. The power output device is installed at the lower end of the test stand and connected to the concrete pole via a steel wire rope to apply load to the concrete pole. The test host is connected to the data acquisition device and the power output device. The test support includes a horizontally set horizontal support, and a number of fixed supports are set on the upper surface of the horizontal support for fixing the concrete pole. The right side of the horizontal support is connected to an inclined support that is set downward. The power output device and a number of guide wheels are set from left to right on the lower surface of the inclined support. Steel wire ropes are wound on the multiple guide wheels. One end of the steel wire rope is connected to the power output device and the other end is connected to the concrete pole. The data acquisition device includes a rope displacement sensor, a tension sensor, and several linear displacement sensors. The linear displacement sensors are installed at the base of the concrete pole, the rope displacement sensors are installed at the tip of the concrete pole, and the tension sensors are installed on the steel wire rope connected to the concrete pole. The test host includes a host computer and a touch screen. The host computer is connected to the data acquisition device, the touch screen and the power output device. The touch screen is used to control the host computer and display data. The test support also includes multiple fixing plates, and the guide wheels are fixedly mounted on the lower surface of the inclined support through the fixing plates. The positions of the multiple guide wheels are determined according to the measured length of the concrete pole. The portable concrete pole mechanical performance testing device also includes multiple rolling supports, which are movably mounted on the concrete pole to eliminate the self-weight of the concrete pole. The plurality of fixed supports include a first fixed support and a second fixed support. The first fixed support includes a first U-shaped wooden pad, a second U-shaped wooden pad, a first connecting plate, a second connecting plate, a third connecting plate, and a double-ended bolt. The first U-shaped wooden pad is disposed on the upper surface of the horizontal support. The concrete pole is disposed in the U-shaped groove of the first U-shaped wooden pad. The second U-shaped wooden pad is sleeved on the upper surface of the concrete pole, corresponding to the first U-shaped wooden pad. The first connecting plate is disposed on the top of the second U-shaped wooden pad. The second connecting plate is disposed on the bottom of the first U-shaped wooden pad. The third connecting plate is disposed on the lower surface of the horizontal support corresponding to the positions of the first U-shaped wooden pad and the second U-shaped wooden pad. The double-ended bolt passes through the first connecting plate, the second U-shaped wooden pad, the first U-shaped wooden pad, the second connecting plate, and the third connecting plate in sequence to fix the concrete pole on the horizontal support. The second fixed support is disposed on the lower surface of the concrete pole. The linear displacement sensors include a first linear displacement sensor and a second linear displacement sensor. The first linear displacement sensor is disposed on the upper side of the root end of the concrete pole, and the second linear displacement sensor is disposed on the lower side of the concrete pole at the connection between the horizontal support and the inclined support. The rope displacement sensor is disposed on the upper side of the tip of the concrete pole, and the tension sensor is disposed on the wire rope connecting the power output device and the concrete pole for detecting the tension of the wire rope.

2. The portable concrete pole mechanical performance testing device according to claim 1, characterized in that, Both the horizontal support and the inclined support include at least one assembly. Adjacent assemblies are fixedly connected. The assembly includes a rectangular frame. The frame has two vertical rods and four inclined rods inside. The vertical rods are arranged parallel to the sides of the frame and are respectively arranged between the upper and lower surfaces of the front and rear sides of the frame. Two inclined rods are arranged at an angle on each of the front and rear sides of the frame.

3. The portable concrete pole mechanical performance testing device according to claim 1, characterized in that, The host computer is an S5P6818 development board, and the power output device is an electric cylinder.

4. The portable concrete pole mechanical performance testing device and its usage method according to claim 1, characterized in that, The test host also includes a communication module, a positioning module, and a camera. The positioning module and the camera are connected to the host computer and are used to collect positioning information and monitoring video. The host computer communicates with the background monitoring host through the communication module and is used to transmit the positioning information and monitoring video to the background monitoring host.

5. A method of using a portable concrete pole mechanical performance testing device according to any one of claims 1-4, characterized in that, Includes the following steps: Step 1: Identify the model of the concrete pole by manual input or scanning, select the appropriate testing standard for the concrete pole based on the model, and determine the testing method. Step 2: Place the concrete pole on the test support, select the guide wheel according to the model identified in Step 1, increase the tension of the power output device to 20% of the full load, and unload it to the initial state. Set the value of the data acquisition device to zero. Step 3: After zeroing, increase the tension of the power output device to 20%, 40%, 60%, 80%, 90%, and 100% of the full load, respectively. After each loading, let it stand still for 3 minutes, and check and record the cracking of the concrete pole.

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