A multi-functional underground sewer line measuring tool
By combining the measuring probe and the pipe diameter measuring rod, and using the limiting sliding part to restrict the sliding distance, the problem of high cost caused by the complex structure of existing drainage pipe diameter measuring instruments is solved, and low-cost, high-precision drainage pipeline diameter measurement is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU INST OF SURVEYING & MAPPING (CHENGDU BASIC GEOGRAPHIC INFORMATION CENT)
- Filing Date
- 2025-10-24
- Publication Date
- 2026-07-28
AI Technical Summary
Existing drainage pipe diameter measuring instruments have complex structures, resulting in high manufacturing costs.
The system employs a combination of a measuring probe and a pipe diameter measuring rod, using a limiting sliding part to restrict the sliding distance of the measuring probe. The pipe diameter of the drainage pipeline is determined by reading the scale value, which simplifies the structure and reduces manufacturing costs.
It achieves high precision and low cost in measuring the diameter of drainage pipelines, with a simple structure, low manufacturing cost, and high measurement accuracy.
Smart Images
Figure CN224568110U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of underground pipeline detection technology, specifically to a multifunctional underground drainage pipeline measuring tool. Background Technology
[0002] Underground pipelines are a crucial component of urban infrastructure and a fundamental guarantee for the high-quality and efficient operation of modern cities, often referred to as the "lifeline" of the city. Underground pipeline detection employs appropriate technical methods to ascertain the current status of underground pipelines, obtain accurate pipeline-related data, and provide information on buried materials for related engineering projects. There are many types of underground pipelines, mainly including water supply, gas, rainwater, sewage, electricity, streetlights, communications, and traffic signal pipelines. Among these, drainage pipelines primarily consist of rainwater pipelines and sewage pipelines.
[0003] Drainage pipelines generally require investigation of their pipe diameter and other properties. In the past, measuring the diameter of drainage pipelines often required manual operation down into the well. However, most sewage inspection wells in cities have large sewage flow rates, and there are situations where the sewage level is high enough to submerge the pipes or even directly block the well opening. At the same time, because the sewage is turbid and unclear, it is difficult to obtain information about the diameter of drainage pipelines by using measuring tools such as tape measures.
[0004] To address the aforementioned issues, CN114518064A discloses a drainage pipe diameter measuring instrument, comprising a measuring rod, a measuring display mechanism, and a measuring execution mechanism. The measuring rod includes an upper scale section and a lower telescopic section; the lower telescopic section includes at least two telescopic units; the measuring display mechanism includes an upper sliding arm and an upper fixed arm; the upper fixed arm is fixed to the bottom of the upper scale section, and the upper sliding arm is located above the upper fixed arm and can move up and down along the axial direction of the upper scale section; a self-locking winch is fixed on the upper sliding arm, and a steel wire rope is wound on the self-locking winch; the measuring execution mechanism includes a lower sliding arm and a lower fixed arm; the lower fixed arm is fixed to the telescopic unit at the bottom of the lower telescopic section; the lower sliding arm is located above the lower fixed arm and can move up and down along the axial direction of the lower telescopic section; the end of the steel wire rope is connected to the lower sliding arm.
[0005] Inspectors use the aforementioned drainage pipe diameter measuring instrument to extend into the well to measure the diameter of the drainage pipeline; however, the aforementioned drainage pipe diameter measuring instrument consists of a complex structure including a measuring rod, a measurement display mechanism, and a measurement execution mechanism, and its manufacturing cost is relatively high. Utility Model Content
[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multifunctional underground drainage pipeline measuring tool to solve the problem that the complex structure of the existing drainage pipeline diameter measuring instrument leads to its relatively high manufacturing cost.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: A multifunctional underground drainage pipeline measuring tool, comprising: A measuring probe, wherein graduations are formed on the outer wall of the measuring probe along its axial direction; The pipe diameter measuring rod includes a connecting rod segment that is slidably connected to one end of a measuring probe via a limiting sliding part, and a measuring rod segment that is connected to the connecting rod segment and arranged horizontally. The limiting sliding part allows the measuring probe and the connecting rod segment to slide relative to each other by a distance equal to the diameter of the measuring rod segment.
[0008] This multi-functional underground drainage pipeline measuring tool is used as follows: Open the manhole cover, hold the end of the measuring probe furthest from the pipe diameter measuring rod, and insert the pipe diameter measuring rod into the manhole. Then, insert the measuring rod section into one end of the drainage pipeline until it abuts against the bottom of the pipeline. Continue moving the measuring probe downwards until the limiting sliding part restricts its downward movement. At this point, read the first scale value aligned with the measuring probe horizontally at the edge of the manhole. Then, move the measuring probe upwards to move the measuring rod section upwards within the drainage pipeline until it abuts against the top of the pipeline. Continue moving the measuring probe upwards until the distance the measuring probe has moved upwards equal to the diameter of the measuring rod section. Then, the limiting sliding part restricts its upward movement. At this point, read the second scale value aligned with the measuring probe horizontally at the edge of the manhole. The difference between the first and second scale values is the measured diameter of the drainage pipeline. The limiting sliding part is designed to limit the relative sliding distance of the measuring probe relative to the connecting rod segment to the diameter of the measuring rod segment during the measurement process. This results in a measurement value that offsets the influence of the diameter of the measuring rod segment on the diameter of the drainage pipeline, thereby enabling a relatively accurate measurement of the drainage pipeline diameter.
[0009] Compared with the prior art, the present invention has the following beneficial effects: This multifunctional underground drainage pipeline measuring tool consists of a measuring probe and a pipe diameter measuring rod. Its structure is simple, its manufacturing cost is low, and it has relatively high accuracy in measuring the diameter of drainage pipelines. Attached Figure Description
[0010] Figure 1 This is a schematic diagram showing the connection between the measuring probe and the pipe diameter measuring rod in one embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the measuring probe; Figure 3 for Figure 1 Schematic diagram of the status when measuring the diameter of a drainage pipeline. Figure 1 ; Figure 4 for Figure 3 Enlarged view of part A in the middle; Figure 5 for Figure 1 Schematic diagram of the status when measuring the diameter of a drainage pipeline. Figure 2 ; Figure 6 for Figure 5 Enlarged view of part B in the middle; Figure 7 This is a schematic diagram showing the connection between the measuring probe and the flow direction judgment plate in one embodiment of the present invention; Figure 8 for Figure 7 A schematic diagram showing the state when measuring the direction of water flow in a drainage pipeline.
[0011] The reference numerals in the accompanying drawings include: measuring probe 1, scale 11, pipe diameter measuring rod 2, connecting rod section 21, measuring rod section 22, limiting sliding part 3, limiting hole 31, limiting pin 32, flow direction judgment plate 4, drag reduction hole 41, and drainage pipeline 5. Detailed Implementation
[0012] The present invention will be further described in detail below through specific embodiments: like Figures 1-6 As shown in the figure, this utility model embodiment proposes a multifunctional underground drainage pipeline measuring tool, including a measuring probe 1 and a pipe diameter measuring rod 2. The measuring probe 1 has a scale 11 formed on its outer wall along its axial direction. The pipe diameter measuring rod 2 includes a connecting rod segment 21 that is slidably connected to one end of the measuring probe 1 through a limiting sliding part 3, and a measuring rod segment 22 that is connected to the connecting rod segment 21 and arranged horizontally. The limiting sliding part 3 allows the measuring probe 1 and the connecting rod segment 21 to slide relative to each other by a distance equal to the diameter of the measuring rod segment 22.
[0013] This multi-functional underground drainage pipeline measuring tool is used as follows: Open the manhole cover, hold the end of the measuring probe 1 furthest from the pipe diameter measuring rod 2, and insert the pipe diameter measuring rod 2 into the manhole; then insert the measuring rod section 22 into one end of the drainage pipeline 5 until it abuts against the bottom of the drainage pipeline 5, and continue to move the measuring probe 1 downwards until the limiting sliding part 3 restricts the measuring probe 1 from moving further downwards. At this point, read the value of the first scale 11 aligned with the measuring probe 1 horizontally at the edge of the manhole (e.g., ...). Figure 3 and Figure 4 Then, the measuring probe 1 is moved upwards, causing the measuring rod segment 22 to move upwards within one end of the drainage pipeline 5 until it abuts against the top of the drainage pipeline 5. The measuring probe 1 continues to move upwards until it reaches the diameter of the measuring rod segment 22. Then, the limiting sliding part 3 restricts the measuring probe 1 from moving further upwards. At this point, the value of the second scale 11 aligned on the measuring probe 1 is read horizontally at the wellhead edge (e.g., ...). Figure 5 and Figure 6The difference between the first and second scale values is the measured diameter of the drainage pipe 5. The limiting sliding part 3 restricts the relative sliding distance of the measuring probe 1 relative to the connecting rod segment 21 during the measurement process to the diameter of the measuring rod segment 22. This ensures that the measured value offsets the influence of the diameter of the measuring rod segment 22 on the diameter measurement of the drainage pipe 5, thus achieving a relatively accurate measurement of the drainage pipe 5 diameter.
[0014] This multifunctional underground drainage pipeline measuring tool consists of a measuring probe 1 and a pipe diameter measuring rod 2. It has a simple structure, low manufacturing cost, and relatively high accuracy in measuring the diameter of drainage pipelines 5.
[0015] To better understand the limiting sliding part 3, it is described in detail below. The limiting sliding part 3 includes a connecting hole, a limiting hole 31, and a limiting pin 32. The connecting hole is formed in the connecting rod segment 21 along the axial direction of the connecting rod segment 21 and allows one end of the measuring probe 1 to slide into it. The limiting hole 31 is formed on the outer wall of the connecting rod segment 21 and communicates with the connecting hole. The length of the limiting hole 31 along the sliding direction of the measuring probe 1 in the connecting hole is equal to the diameter of the measuring rod segment 22. One end of the limiting pin 32 is detachably connected to the end of the measuring probe 1 that passes through the connecting hole, and the other end passes through the limiting hole 31 and is placed in the connecting hole.
[0016] In this embodiment, a threaded hole can be opened on the side wall of one end of the measuring probe 1; the measuring probe 1 is slidably inserted into the connecting hole of the connecting rod section 21, and the threaded hole is arranged facing the limiting hole 31; then one end of the limiting pin 32 is passed through the limiting hole 31 and then threaded into the threaded hole to stably connect the measuring probe 1 and the connecting rod section 21 together, and the maximum distance that the measuring probe 1 can slide relative to the connecting rod section 21 is the diameter of the measuring rod section 22 through the cooperation of the limiting pin 32 and the limiting hole 31. In the process of measuring the diameter of the drainage pipeline 5, the measurement error caused by the measuring rod section 22 is offset, and the diameter of the drainage pipeline 5 is obtained by directly calculating the difference between the first scale value 11 and the second scale value 11.
[0017] When reading the first and second scale values, a horizontal block can be placed horizontally between the top of the wellhead edge and the measuring probe 1. The scale value displayed at the position where the horizontal block is aligned on the measuring probe 1 is the first or second scale value, so that the first or second scale value can be read relatively quickly and accurately.
[0018] Specifically, in this embodiment, the measuring probe 1 and the pipe diameter measuring rod 2 are configured as follows: The measuring probe 1 is made of at least one steel pipe, each steel pipe being 1.0m long. The length of the measuring probe 1 can be designed according to the depth of the inspection well. The scale 11 formed on the outer wall of the measuring probe 1 facilitates reading when measuring the diameter of the drainage pipeline 5. Both ends of the probe are formed with threaded joints for easy connection with other structures.
[0019] The pipe diameter measuring rod 2 is also made of steel pipe and is L-shaped, meaning that the connecting rod section 21 and the measuring rod section 22 form an "L" shape. The connecting rod section 21 connects to the measuring probe 1, and the measuring rod section 22 cooperates with the drainage pipe 5 to perform measurements. The pipe diameter measuring rod 2 is slightly thicker than the measuring probe 1 so that one end of the measuring probe 1 can slide into the connecting rod section 21. The connecting hole is a hole formed inside the steel pipe and does not need to be created separately. Specifically, the length of the connecting rod section 21 is 1.0m, and the length of the measuring rod section 22 is 0.5m.
[0020] The measuring probe 1 and the connecting rod section 21 can be connected to an existing telescopic rod. The telescopic rod can be adjusted in length according to the depth of the inspection well to measure the diameter of the drainage pipeline 5 below the inspection well at different depths.
[0021] To enrich the measurement functions of this multi-functional underground drainage pipeline measuring tool, such as... Figure 7 and Figure 8 As shown, according to another embodiment of the present invention, the multifunctional underground drainage pipeline measuring tool further includes a flow direction judgment plate 4, which is detachably connected to one end of the measuring probe rod 1 by any one of the connecting rod segments 21.
[0022] In this embodiment, a connecting cap can be formed on the flow direction judgment plate 4, which is threaded to one end of the measuring probe 1, facilitating quick connection between the measuring probe 1 and the flow direction judgment plate 4. In use, the flow direction judgment plate 4 is moved to the outside of one end of the drainage pipe 5 by holding one end of the measuring probe 1. Then, the direction of the impact force generated by the water flowing into or out of the drainage pipe 5 on the flow direction judgment plate 4 is felt on the measuring probe 1, thereby quickly determining the direction of water flow within the drainage pipe 5.
[0023] In order to reduce the impact force on the flow direction judgment plate 4 during the measurement of the water flow direction in the drainage pipeline 5, the flow direction judgment plate 4 is provided with a number of drag-reducing holes 41.
[0024] The flow direction determination plate 4 is specifically made of a metal plate, such as an iron plate; the size of the flow direction determination plate 4 is 0.35m × 0.30m.
[0025] When this multi-functional underground drainage pipeline measuring tool measures the diameter of drainage pipeline 5 and the direction of water flow within drainage pipeline 5, its operation is as follows.
[0026] Measurement of drainage pipe diameter 5: The first step is to connect the measuring probe 1 to the pipe diameter measuring rod 2; The second step is to open the manhole cover, then hold the measuring probe 1 and place the pipe diameter measuring rod 2 below the sewage water level in the manhole, inserting the measuring rod section 22 into one end of the drainage pipe 5 until it abuts against the bottom of the drainage pipe 5; continue to move the measuring probe 1 downwards until the limiting pin 32 moves within the limiting hole 31 and abuts against the bottom side of the limiting hole 31, restricting the measuring probe 1 from moving further downwards. At this point, read the value of the first scale 11 aligned on the measuring probe 1 horizontally at the edge of the manhole (e.g., ...). Figure 3 and Figure 4 ); The third step is to move the measuring probe 1 upwards, causing the measuring rod section 22 to move upwards within one end of the drainage pipeline 5 until it abuts against the top of the drainage pipeline 5; continue moving the measuring probe 1 upwards until the limiting pin 32 moves within the limiting hole 31 and abuts against the top side of the limiting hole 31, thus restricting the measuring probe 1 from moving further upwards. At this point, read the value of the second scale 11 aligned on the measuring probe 1 horizontally at the edge of the wellhead (e.g., ...). Figure 5 and Figure 6 ); The fourth step is to calculate the difference between the first and second scale values to obtain the measured diameter of the drainage pipe.
[0027] When measuring the direction of water flow in drainage pipe 5: The first step is to connect the measuring probe 1 to the flow direction judgment plate 4; The second step is to open the manhole cover, then hold the measuring probe 1 and move the flow direction judgment plate 4 as close as possible to one end of the drainage pipeline 5 to ensure it is perpendicular to the drainage pipeline 5 (e.g., Figure 8 Then, the direction of the water flow in the drainage pipe 5 is determined by sensing the impact force generated by the water flowing into or out of the drainage pipe 5 on the measuring probe 1.
[0028] It should be noted that after the measurement is completed, this multi-functional underground drainage pipeline measuring tool can be rinsed with clean water for the next use. Also, the manhole cover should be closed in time to avoid safety hazards.
[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A multifunctional underground drainage pipeline measuring tool, characterized in that, include: A measuring probe, wherein graduations are formed on the outer wall of the measuring probe along its axial direction; The pipe diameter measuring rod includes a connecting rod segment that is slidably connected to one end of a measuring probe via a limiting sliding part, and a measuring rod segment that is connected to the connecting rod segment and arranged horizontally. The limiting sliding part allows the measuring probe and the connecting rod segment to slide relative to each other by a distance equal to the diameter of the measuring rod segment.
2. The multifunctional underground drainage pipeline measuring tool according to claim 1, characterized in that, The limiting sliding part includes: A connecting hole is provided, which is opened in the connecting rod segment along the axial direction of the connecting rod segment and allows one end of the measuring probe to be slidably inserted. A limiting hole is provided on the outer wall of the connecting rod segment and communicates with the connecting hole. The length of the limiting hole along the sliding direction of the measuring probe in the connecting hole is equal to the diameter of the measuring rod segment. A limiting pin, one end of which is detachably connected to one end of the measuring probe that passes through the connecting hole, and the other end of which passes through the limiting hole and is placed outside the connecting rod section.
3. A multifunctional underground drainage pipeline measuring tool according to claim 1 or 2, characterized in that, The pipe diameter measuring rod is made of steel pipe.
4. The multifunctional underground drainage pipeline measuring tool according to claim 1, characterized in that, It also includes a flow direction determination plate, which is detachably connected to one end of the measuring probe along with any one of the connecting rod segments.
5. A multifunctional underground drainage pipeline measuring tool according to claim 4, characterized in that, The flow direction determination plate is evenly distributed with several drag-reducing holes.
6. A multifunctional underground drainage pipeline measuring tool according to claim 4 or 5, characterized in that, The flow direction determination plate is made of metal plate.