Plastic pipe wall thickness measuring system

Abstract

The invention relates to the technical field of pipe measurement, and discloses a plastic pipe wall thickness measuring system which comprises a supporting frame, a fixing mechanism is installed in the supporting frame and used for fixing the measuring system in a to-be-measured pipe, and a climbing mechanism is installed at the output end of the fixing mechanism and climbs along the inner wall of the to-be-measured pipe. A magnetic attraction assembly is installed at the output end of the climbing mechanism and used for measuring the wall thickness of the pipe, an auxiliary system is installed in the magnetic attraction assembly, and the fixing mechanism comprises a fixing frame. By adopting the technical scheme of an auxiliary system consisting of a distance sensor, a laser ranging module and a data transmission and processing module, the effects of accurately measuring the wall thickness and radius of the pipe and efficiently transmitting and processing data are realized. Compared with the technical scheme of low measurement precision and inconvenience in data processing and transmission in the prior art, the defects of large measurement result error and difficulty in rapid data analysis and utilization are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of pipe measurement, in particular to a plastic pipe wall thickness measurement system. Background Art

[0002] In the production and quality inspection of plastic pipes, the wall thickness of the pipe is a key indicator that affects product performance and safety, but traditional measurement technology has many problems. Common contact measuring tools such as calipers and micrometers rely on manual operation, which requires high skills and experience of operators. A slight deviation in operation can easily cause large errors. Moreover, they are only suitable for pipes with regular shapes that are easy to measure directly. Pipes with large diameters, complex internal structures or bends, such as large-diameter plastic drainage pipes, cannot be measured. Early measurement systems had a low degree of automation and required manual reading, recording and calculation. The process was cumbersome and time-consuming. Manual recording and calculation were also prone to data transcription errors and calculation errors, which seriously affected the accuracy and reliability of the measurement results. Some existing measurement technologies have a limited measurement range and can only obtain wall thickness data at a few specific points of the pipe, which cannot fully reflect the overall wall thickness of the pipe. In actual production, the pipe may have uneven wall thickness, which makes it difficult to find defects and unqualified products may flow into the market. In addition, traditional measurement technology lacks data processing capabilities. It only focuses on data acquisition and ignores subsequent processing and analysis. Even if the data is acquired, it cannot be effectively analyzed, making it difficult to mine potential information and provide strong support for production process optimization and quality control. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a plastic pipe wall thickness measurement system, which solves the problems that the existing pipe wall thickness measurement process is difficult to operate and the pipes with complex internal structures or bent pipes cannot be measured.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a plastic pipe wall thickness measurement system, including a support frame, a fixing mechanism is installed inside the support frame, which is used to fix the measurement system inside the pipe to be measured, a climbing mechanism is installed at the output end of the fixing mechanism, which climbs along the inner wall of the pipe to be measured, a magnetic suction component is installed at the output end of the climbing mechanism, which is used to measure the wall thickness of the pipe, and an auxiliary system is installed inside the magnetic suction component.

[0005] Preferably, the fixing mechanism includes a fixing frame, the fixing frame is installed inside the supporting frame, a laser instrument is installed inside the fixing frame, one end of a retractable rod is fixedly connected to one side of an outer wall of the fixing frame, the other end of the retractable rod is fixedly connected to a sliding rod, the sliding rod is slidably connected to the inside of the supporting frame, one end of a spring is installed on one side of the outer wall of the fixing frame, and the other end of the spring is installed on one side of the outer wall of the fixing frame.

[0006] Preferably, the climbing mechanism includes a winch shaft, which is installed at one end of the sliding rod, a measuring rope is wound on the outside of the winch shaft, a self-driving frame is installed on one end of the measuring rope, a miniature double-headed motor is installed inside the self-driving frame, a roller is fixedly connected to the output end of the miniature double-headed motor, and the magnetic suction component is fixedly connected to the inside of the self-driving frame.

[0007] Preferably, the magnetic attraction component includes a magnetic buckle, one side of the outer wall of the magnetic buckle is installed inside the self-driving frame, a ball is rotatably connected inside the magnetic buckle, an auxiliary groove is opened on one side of the outer wall of the magnetic buckle, and a magnetic attraction part is installed inside the auxiliary groove.

[0008] Preferably, the auxiliary system includes a distance sensor module, a laser ranging module and a data transmission and processing module.

[0009] Preferably, the distance sensing module includes an ultrasonic distance sensor, and the ultrasonic distance sensor is installed inside the magnetic buckle. The distance sensing module is used to receive the distance data between the two magnetic components in real time.

[0010] Preferably, the laser distance measuring module comprises a micro laser distance measuring instrument, and the micro laser distance measuring instrument is installed inside the magnetic attraction component. The laser distance measuring instrument module is used to calculate the distance between the magnetic attraction component and the laser instrument.

[0011] Preferably, the data transmission and processing module includes a Bluetooth module, which is arranged inside the laser instrument. The data transmission and processing module analyzes, stores and displays the received data.

[0012] Preferably, one end of the self-driving frame is rotatably connected to an auxiliary wheel.

[0013] Preferably, a push block is fixedly connected to the top of the slide rod, and a rubber pad is installed on one side of the outer wall of the slide rod.

[0014] The present invention provides a plastic pipe wall thickness measurement system, which has the following beneficial effects: 1. The present invention uses the auxiliary system technical solution composed of distance sensor, laser distance measurement module and data transmission and processing module to achieve the effect of accurately measuring the wall thickness and radius of the pipe, and efficiently transmitting and processing data. Compared with the technical solution of low measurement accuracy and inconvenient data processing and transmission in the prior art, it solves the shortcomings of large measurement result errors and difficulty in rapid analysis and utilization of data.

[0015] 2. The present invention adopts a fixing technical solution of a spring with a retractable rod and a sliding rod, achieving the technical effect of adapting to pipes of different inner diameters and stably fixing the measurement system. Compared with the technical solution in the prior art with a single fixing method and difficulty in adapting to a variety of pipe diameters, it solves the problem that it cannot be flexibly applied to the measurement of pipes of different specifications and is prone to unstable fixing that affects the measurement accuracy.

[0016] 3. The present invention uses the climbing technology of the winch shaft with the self-driving frame, the micro double-headed motor and the roller to achieve the effect of the measurement system moving autonomously and smoothly on the inner wall of the pipe. Compared with the existing technology that relies on manual movement of the measurement device, which has the problem of unsmooth movement and low efficiency, it solves the problem that it is difficult to measure the pipe in all directions, and the operation is cumbersome and time-consuming. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional diagram of the wall thickness measurement system of the present invention; Figure 2 is a schematic diagram of a wall thickness measurement system in the present invention; Figure 3 It is an exploded view of the fixing mechanism in the present invention; Figure 4 for Figure 3 A in the enlarged view; Figure 5 is a schematic diagram of the climbing mechanism of the present invention; Figure 6 for Figure 5 The enlarged view of point B in the figure; Figure 7 An exploded view of the climbing mechanism of the present invention; Figure 8 This is a display diagram of the magnetic attraction component in the present invention.

[0018] Among them, 1. support frame; 2. fixing mechanism; 201. fixing frame; 202. rubber pad; 203. laser instrument; 204. retractable rod; 205. sliding rod; 206. spring; 207. push block; 3. climbing mechanism; 301. winch shaft; 302. measuring rope; 303. self-driving frame; 304. micro double-headed motor; 305. roller; 306. auxiliary wheel; 4. magnetic suction component; 401. magnetic suction buckle; 402. ball bearing; 403. auxiliary groove; 404. magnetic suction part. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please refer to the attached Figure 1 - Attachment Figure 8 An embodiment of the present invention provides a plastic pipe wall thickness measurement system, including a support frame 1, a fixing mechanism 2 is installed inside the support frame 1, which is used to fix the measurement system inside the pipe to be measured, a climbing mechanism 3 is installed at the output end of the fixing mechanism 2, which climbs along the inner wall of the pipe to be measured, a magnetic suction component 4 is installed at the output end of the climbing mechanism 3, which is used to measure the wall thickness of the pipe, and an auxiliary system is installed inside the magnetic suction component 4.

[0021] The fixing mechanism 2 includes a fixing frame 201, which is installed inside the support frame 1, and a laser instrument 203 is installed inside the fixing frame 201. One end of a retractable rod 204 is fixedly connected to one side of the outer wall of the fixing frame 201, and the other end of the retractable rod 204 is fixedly connected to a sliding rod 205. The sliding rod 205 is slidably connected to the inside of the support frame 1, and one end of a spring 206 is installed on one side of the outer wall of the fixing frame 201, and the other end of the spring 206 is installed on one side of the outer wall of the fixing frame 201; Specifically, when the measuring system is placed inside the pipe to be measured, the staff slides the slide bar 205 toward the inside of the support frame 1. The slide bar 205 slides to give pressure to the spring 206 to compress the spring 206. The spring 206 will expand and contract according to the inner diameter of the pipe. If the inner diameter is large, the spring 206 will expand, push the retractable rod 204 and the slide bar 205 outward, and make the slide bar 205 press against the inner wall of the pipe; if the inner diameter is small, the spring 206 will contract, the retractable rod 204 and the slide bar 205 will shrink inward, and the rubber pad 202 will increase the friction with the inner wall of the pipe, making the system more stable, so that the laser emission point of the laser instrument 203 is always maintained at the center point of the pipe cross section, and the laser instrument 203 emits laser to provide a positioning reference for subsequent measurements.

[0022] The climbing mechanism 3 includes a winch shaft 301, which is mounted at one end of the sliding rod 205. A measuring rope 302 is wound on the outside of the winch shaft 301, and a self-driving frame 303 is mounted on one end of the measuring rope 302. A micro double-headed motor 304 is mounted inside the self-driving frame 303, and a roller 305 is fixedly connected to the output end of the micro double-headed motor 304. Four magnetic suction components are fixedly connected to the inside of the self-driving frame 303. The magnetic component 4 includes a magnetic buckle 401, one side of the outer wall of the magnetic buckle 401 is installed inside the self-driving frame 303, a ball 402 is rotatably connected inside the magnetic buckle 401, an auxiliary groove 403 is opened on one side of the outer wall of the magnetic buckle 401, and a magnetic member 404 is installed inside the auxiliary groove 403; Specifically, the magnetic element 404 generates magnetic force, and the magnetic buckles 401 on both sides attract each other, so that the magnetic buckles 401 are tightly adsorbed on the inner wall of the pipe, so that the outer wall of the magnetic component 4 and the inner wall of the pipe generate friction, and the micro double-headed motor 304 is started to drive the roller 305 to rotate, and the self-driving frame 303 can move along the inner wall of the pipe. The winch shaft 301 can retract and release the measuring rope 302 according to the movement of the self-driving frame 303 to ensure that the measuring rope 302 is at a suitable tension, so that the self-driving frame 303 moves smoothly and prevents the measuring rope 302 from being entangled. The ball 402 rotates in the magnetic buckle 401 to reduce the friction between the self-driving frame 303 and the inner wall of the pipe when moving, making the movement smoother. The auxiliary groove 403 can concentrate the magnetic force of the magnetic element 404 and enhance the adsorption effect. The magnetic component 4 moves along the inner wall of the pipe while following the movement of the self-driving frame 303. At this time, the distance between the magnetic components 4 is the wall thickness of the pipe.

[0023] The auxiliary system includes a distance sensor module, a laser ranging module, and a data transmission and processing module; The distance sensing module includes an ultrasonic distance sensor, which is installed inside the magnetic buckle 401. The distance sensing module is used to receive the distance data between the two magnetic components 4 in real time; The laser distance measuring module includes a micro laser distance measuring device, which is installed inside the magnetic suction component 4. The laser distance measuring device module is used to calculate the distance between the magnetic suction component 4 and the laser instrument 203. The data transmission and processing module includes a Bluetooth module, which is arranged inside the laser instrument 203. The data transmission and processing module analyzes, stores and displays the received data; Specifically, in the entire plastic pipe wall thickness measurement system, the distance sensor module is the key part for obtaining pipe wall thickness data. To achieve accurate measurement, high-precision ultrasonic distance sensors are installed on opposite sides of the two magnetic suction components 4. These sensors have extremely high sensitivity and resolution, and can accurately sense extremely weak ultrasonic signals, thereby ensuring the accuracy of the measurement data.

[0024] When the magnetic component 4 is tightly adsorbed on the inner wall of the pipe by the magnetic force generated by its internal magnetic part 404, the ultrasonic distance sensor starts working, and it transmits an ultrasonic signal to the opposite magnetic component 4. This signal propagates in the air with a specific frequency and intensity. Then, the signal is reflected on the surface of the opposite magnetic component 4, and the reflected signal is received by the ultrasonic distance sensor again.

[0025] During the signal transmission and reception process, the sensor will accurately record the time it takes for the signal to go back and forth. Combined with the known propagation speed of ultrasound in the air, according to the formula:

[0026] in, is the distance between the two magnetic components 4, that is, the wall thickness of the pipe; is the propagation speed of ultrasound in the air, which is a relatively stable physical constant and its value is fixed under standard conditions; By using the round trip time of the signal, the distance between the two magnetic components 4 can be accurately calculated, and then the wall thickness of the pipe can be obtained.

[0027] However, in actual measurement, it may be interfered by some external factors, such as air flow fluctuations inside the pipe, noise from the surrounding environment, etc. In order to reduce the impact of these interference factors on the measurement results, the ultrasonic distance sensor is equipped with advanced filtering algorithms and signal enhancement technology. The filtering algorithm can effectively filter out interference signals with different frequencies from the ultrasonic signal, while the signal enhancement technology can amplify weak reflected signals, allowing the sensor to more accurately identify and process these signals, thereby ensuring the reliability of the measurement results.

[0028] The laser distance measurement module is mainly used to measure the distance between the magnetic component 4 and the laser instrument 203, that is, the radius of the pipeline. A small laser distance meter is installed on the magnetic component 4. This laser distance meter is small in size but has high-precision measurement capabilities. Before the measurement begins, the laser instrument 203 in the fixing mechanism 2 will emit a laser beam, which will pass through the internal space of the pipe and eventually project to the center of the pipe, thereby providing an accurate direction reference for subsequent laser distance measurement. When the system starts working, the laser distance meter on the magnetic component 4 will emit a laser signal to the center of the pipe. This laser signal will propagate along the direction determined by the laser instrument 203 until it reaches the center of the pipe and is reflected. The reflected laser signal will be received by the laser distance meter again.

[0029] The laser rangefinder will accurately record the time it takes for the laser signal to go back and forth. Based on the time it takes for the laser signal to go back and forth, the formula is used:

[0030] in, is the distance between the magnetic component 4 and the laser instrument 203, i.e., the pipeline radius; The propagation speed of laser in air is very fast and stable. The round trip time of the laser signal can be used to accurately calculate the distance between the magnetic component 4 and the laser instrument 203, that is, the radius of the pipeline.

[0031] To ensure the accuracy of the measurement, the laser rangefinder uses advanced optical systems and time measurement technology. The optical system can ensure the collimation and focusing of the laser beam, so that the laser signal can accurately reach the center of the circle and reflect back. The time measurement technology can be accurate to the nanosecond level, so that the extremely short round-trip time of the laser signal can be accurately measured, further improving the measurement accuracy.

[0032] The data transmission and processing module plays an important role in connecting the entire auxiliary system. It is responsible for transmitting the data obtained by the distance sensor module and the laser ranging module to the external data processing terminal in real time and accurately, and effectively analyzing, storing and displaying these data.

[0033] A wireless data transmission module is set up in the auxiliary system, such as a Bluetooth module or a Wi-Fi module. These wireless data transmission modules have the advantages of fast transmission speed, high stability, and strong anti-interference ability. After completing data collection, the distance sensor module and the laser ranging module will convert the data into a format suitable for wireless transmission, and then send it out through the wireless data transmission module.

[0034] External data processing terminals, such as computers or mobile devices, have built-in special data analysis software. After receiving the data sent by the wireless data transmission module, the data analysis software will immediately process the data. First, the software will perform preliminary verification and screening on the data to remove the erroneous data that may be generated by interference. Then, according to the pre-set algorithms and models, the valid data will be analyzed and calculated to obtain key parameters such as the wall thickness and radius of the pipe.

[0035] The data analysis software will store the results of the analysis in the local database for subsequent query and comparative analysis. At the same time, the software will display the results on the screen of the terminal device in the form of intuitive charts and numbers, so that operators can quickly and clearly understand the wall thickness and radius data of the pipe. In addition, the data analysis software also has a data export function, and operators can export the measurement data and analysis results into common file formats, such as Excel tables or PDF files, for further processing and sharing.

[0036] One end of the self-driving frame 303 is rotatably connected to an auxiliary wheel 306 .

[0037] A push block 207 is fixedly connected to the top of the slide bar 205, and a rubber pad 202 is installed on one side of the outer wall of the slide bar 205; Specifically, the auxiliary wheel 306 plays a supporting and guiding role when the self-driving frame 303 moves. It cooperates with the roller 305 to make the self-driving frame 303 move more stably on the inner wall of the pipe, avoid shaking or deviation of the self-driving frame 303, and ensure measurement accuracy; The push block 207 facilitates the operator to push the slide bar 205 to adjust the position and tightness of the fixing mechanism 2. The rubber pad 202 not only increases the friction force, but also protects the inner wall of the pipe to prevent scratches.

[0038] Working principle: First, place the measuring system into the pipe to be measured. The operator pushes the slide bar 205 through the push block 207 to compress the spring 206. The spring 206 will automatically expand and contract according to the inner diameter of the pipe. When the inner diameter is large, it will stretch and push the slide bar 205 to press against the inner wall of the pipe. When the inner diameter is small, it will contract and drive the slide bar 205 to retract. The rubber pad 202 increases the friction and protects the inner wall of the pipe. At the same time, the laser instrument 203 in the fixed frame 201 emits laser to provide a positioning reference for subsequent measurements. Next, the micro double-headed motor 304 is started to drive the roller 305 to rotate, and the self-driving frame 303 moves along the inner wall of the pipe with the support and guidance of the auxiliary wheel 306. The winch shaft 301 retracts and releases the measuring rope 302 to ensure the smooth movement of the self-driving frame 303. The magnetic suction component 4 is fixed in the self-driving frame 303, and its internal magnetic suction part 404 generates magnetic force, so that the magnetic buckle 401 is adsorbed on the inner wall of the pipe, the ball 402 reduces the friction of movement, and the auxiliary groove 403 enhances the adsorption effect. During the movement, the distance between the magnetic suction components 4 on both sides is the wall thickness of the pipe. At the same time, the auxiliary system plays a role. The ultrasonic distance sensor of the distance sensor module is installed in the magnetic buckle 401. It calculates the wall thickness of the pipe by emitting and receiving ultrasonic signals, combining the signal round-trip time and the ultrasonic propagation speed. It is also equipped with filtering algorithms and signal enhancement technology to reduce external interference; the micro laser rangefinder of the laser ranging module is installed in the magnetic component 4. According to the positioning of the laser instrument 203 in the fixing mechanism 2, a laser signal is emitted to the center of the pipe. According to the round-trip time of the laser signal and the laser propagation speed, the distance between the magnetic component 4 and the laser instrument 203, that is, the radius of the pipe, is calculated. It uses advanced optical and time measurement technology to ensure measurement accuracy; the data transmission and processing module transmits the data obtained by the distance sensor module and the laser ranging module to an external data processing terminal such as a computer or mobile device in real time through a wireless data transmission module such as a Bluetooth module. The data analysis software in the terminal verifies, screens, analyzes and calculates the data, stores it in the local database, and displays it in the form of charts and numbers. The data can also be exported for further processing and sharing.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic pipe wall thickness measurement system, comprising a support frame (1), characterized in that: A fixing mechanism (2) is installed inside the support frame (1) and is used to fix the measuring system inside the pipe to be measured. A climbing mechanism (3) is installed at the output end of the fixing mechanism (2) and climbs along the inner wall of the pipe to be measured. A magnetic attraction component (4) is installed at the output end of the climbing mechanism (3) and is used to measure the wall thickness of the pipe. An auxiliary system is installed inside the magnetic attraction component (4).

2. A plastic pipe wall thickness measurement system according to claim 1, characterized in that: The fixing mechanism (2) comprises a fixing frame (201), the fixing frame (201) being mounted inside the support frame (1), a laser instrument (203) being mounted inside the fixing frame (201), one end of a retractable rod (204) being fixedly connected to one side of an outer wall of the fixing frame (201), the other end of the retractable rod (204) being fixedly connected to a sliding rod (205), the sliding rod (205) being slidably connected inside the support frame (1), one end of a spring (206) being mounted on one side of an outer wall of the fixing frame (201), the other end of the spring (206) being mounted on one side of an outer wall of the fixing frame (201).

3. A plastic pipe wall thickness measurement system according to claim 2, characterized in that: The climbing mechanism (3) comprises a hoisting shaft (301), wherein the hoisting shaft (301) is mounted on one end of a sliding rod (205), a measuring rope (302) is wound on the outside of the hoisting shaft (301), a self-driving frame (303) is mounted on one end of the measuring rope (302), a micro double-headed motor (304) is mounted inside the self-driving frame (303), an output end of the micro double-headed motor (304) is fixedly connected to a roller (305), and the magnetic attraction component (4) is fixedly connected to the inside of the self-driving frame (303).

4. A plastic pipe wall thickness measurement system according to claim 3, characterized in that: The magnetic attraction component (4) comprises a magnetic attraction buckle (401), one side of the outer wall of the magnetic attraction buckle (401) is installed inside the self-driving frame (303), a ball (402) is rotatably connected inside the magnetic attraction buckle (401), an auxiliary groove (403) is opened on one side of the outer wall of the magnetic attraction buckle (401), and a magnetic attraction component (404) is installed inside the auxiliary groove (403).

5. A plastic pipe wall thickness measurement system according to claim 4, characterized in that: The auxiliary system includes a distance sensor module, a laser distance measurement module and a data transmission and processing module.

6. A plastic pipe wall thickness measurement system according to claim 5, characterized in that: The distance sensing module comprises an ultrasonic distance sensor, which is installed inside the magnetic buckle (401). The distance sensing module is used to receive the distance data between the two magnetic components (4) in real time.

7. A plastic pipe wall thickness measurement system according to claim 5, characterized in that: The laser distance measuring module comprises a micro laser distance measuring device, the micro laser distance measuring device is installed inside the magnetic attraction component (4), and the laser distance measuring device module is used to calculate the distance between the magnetic attraction component (4) and the laser instrument (203).

8. A plastic pipe wall thickness measurement system according to claim 5, characterized in that: The data transmission and processing module comprises a Bluetooth module, the Bluetooth module is arranged inside the laser instrument (203), and the data transmission and processing module analyzes, stores and displays received data.

9. A plastic pipe wall thickness measurement system according to claim 3, characterized in that: One end of the self-driving frame (303) is rotatably connected to an auxiliary wheel (306).

10. A plastic pipe wall thickness measurement system according to claim 2, characterized in that: A push block (207) is fixedly connected to the top of the slide bar (205), and a rubber pad (202) is installed on one side of the outer wall of the slide bar (205).

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