Inspection well inner pipe diameter measuring device

Abstract

The utility model relates to the technical field of pipe diameter measurement, in particular to an inspection well inner pipe diameter measuring device which comprises a limiting sleeve and a sliding rod, the limiting sleeve is sleeved on the sliding rod in a sliding mode, the bottom of the sliding rod is fixedly connected with a limiting plate, and one side of the bottom of the limiting sleeve is fixedly connected with a first clamping plate. A second clamping plate is fixedly connected to one side of the limiting plate, a first grabbing rod is fixedly connected to one side of the upper end of the limiting sleeve, a second grabbing rod is fixedly connected to one side of the upper end of the sliding rod, the length of the sliding rod is larger than that of the limiting sleeve, and scale marks are arranged on the upper portion of the sliding rod. The first clamping plate and the second clamping plate are matched to clamp a pipeline, the scale marks are arranged on the sliding rod, reading can be conveniently carried out, pipe diameter measurement data can be visually obtained, workers do not need to enter an inspection well for measurement, measurement is convenient, and personnel safety can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of pipe diameter measurement technology, specifically a device for measuring the pipe diameter inside a manhole. Background Technology

[0002] In urban infrastructure construction, underground pipeline systems play an indispensable role, providing basic guarantees for our daily lives, from drainage and water supply to sewage and gas supply. Within these vast underground networks, pipeline inspection manholes serve as crucial nodes for connection, monitoring, and maintenance, playing an irreplaceable role. Urban surveying is a fundamental, pioneering, and essential task for urban planning, construction, management, and development, its importance permeating all aspects of urban operation. Measuring the pipe diameter in inspection manholes is crucial in urban surveying. By measuring the pipe diameter, the specifications of different pipelines can be clearly defined, providing key information for establishing an accurate underground pipeline database. Pipe diameter data is the basis for analyzing pipeline transport capacity and network compatibility, helping to determine whether existing pipelines meet urban development needs and providing a basis for subsequent pipeline renovation, expansion, or new construction planning. When pipelines experience leaks or damage, pipe diameter data helps maintenance personnel quickly match appropriate repair materials, improving repair efficiency and reducing the impact on urban traffic and residents' lives. Currently, pipe diameter measurements in inspection wells require personnel to descend into the well. Inspection wells are typically small and poorly lit, restricting worker movement and resulting in low measurement efficiency. Furthermore, they are prone to oxygen deficiency and the accumulation of toxic gases such as hydrogen sulfide and methane, posing safety risks to workers. Therefore, there is a need to develop a device that allows for pipe diameter measurements in inspection wells without requiring personnel to enter. Utility Model Content

[0003] To address the above-mentioned technical problems, this utility model provides a device that can measure the pipe diameter in a manhole without requiring personnel to go down into the well, thereby solving the problems of difficulty in measurement and safety risks caused by the current requirement for personnel to go down into the manhole to measure the pipe diameter.

[0004] To solve the above-mentioned technical problems, the present invention provides a manhole diameter measuring device, comprising a limiting sleeve and a sliding rod. The limiting sleeve is slidably sleeved on the sliding rod. A limiting plate is fixedly connected to the bottom of the sliding rod. A first clamping plate is fixedly connected to one side of the bottom of the limiting sleeve. A second clamping plate is fixedly connected to one side of the limiting plate. A first gripping rod is fixedly connected to one side of the upper end of the limiting sleeve. A second gripping rod is fixedly connected to one side of the upper end of the sliding rod. The length of the sliding rod is greater than the length of the limiting sleeve. A scale line is provided on the upper part of the sliding rod.

[0005] Furthermore, a groove is provided on one side of the slide rod along the axial direction, and a protrusion matching the groove is fixedly connected inside the limiting sleeve along the axial direction.

[0006] Furthermore, the limiting sleeve is composed of at least two detachably connected sleeve components. A connecting plate is fixedly connected to the bottom outer side of the upper sleeve component, and the connecting plate is fixedly connected to the top outer side of the lower sleeve component. The upper and lower sleeve components are connected by bolts passing through the connecting plate. A first gripping rod is fixedly connected to the top side of the uppermost sleeve component, and a first locking plate is fixedly connected to the bottom side of the lowermost sleeve component.

[0007] Furthermore, the slide bar is composed of at least two detachably connected slide bar components. The bottom of the upper slide bar component is fixedly connected to a threaded rod, and the upper part of the lower slide bar component has a threaded hole. The upper and lower slide bar components are threadedly connected to each other through the threaded rod and the threaded hole. The top side of the uppermost slide bar component is fixedly connected to the second gripping rod, and the bottom of the lowermost slide bar component is fixedly connected to the limiting plate.

[0008] Furthermore, when the lower surface of the first card plate is in contact with the upper surface of the second card plate, the upper edge of the limiting sleeve is at the zero point of the scale line.

[0009] This utility model has the following advantages compared with the prior art:

[0010] 1. This utility model uses a limiting sleeve and a sliding rod that are slidably connected to each other. A first clamping plate is connected to the bottom of the limiting sleeve, and a second clamping plate is connected to the bottom of the sliding rod. The pipe can be clamped by the cooperation of the first and second clamping plates. By setting scale lines on the sliding rod, it is easy to read the data and obtain the pipe diameter measurement data intuitively. The staff can insert this device into the inspection well from outside the inspection well to measure the pipe diameter in the inspection well without the need for the staff to enter the inspection well. The measurement is convenient and can ensure the safety of personnel.

[0011] 2. This utility model makes both the limiting sleeve and the sliding rod detachable structural components, which makes it easy to carry and expands the applicability of the device by making it suitable for different lengths of the connection at different depths of inspection wells. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a diagram illustrating the usage process.

[0014] Figure 3 This is a diagram illustrating the usage process.

[0015] Figure 4 This is a schematic diagram of the slide bar structure.

[0016] Figure 5 This is a top view of the limiting sleeve and sliding rod.

[0017] In the diagram: 1. Limiting sleeve, 2. First clamping plate, 3. First gripping rod, 4. Sliding rod, 5. Second clamping plate, 6. Second gripping rod, 7. Scale line, 8. Limiting plate, 9. Protrusion, 10. Groove, 11. Connecting plate, 12. Bolt, 13. Threaded rod, 14. Threaded hole, 15. Inspection well, 16. Pipeline. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Currently, measuring the diameter of pipes in inspection wells, whether measuring the outer or inner diameter, requires personnel to enter the well. However, the limited space inside the well makes this extremely inconvenient, and the presence of toxic or harmful gases poses a health risk to workers. Furthermore, measuring the outer diameter typically involves using a flexible measuring tape around the pipe's circumference before calculating the diameter, which doesn't provide direct data. Some measuring tools are also too long and inconvenient for workers to carry. Overall, this results in inconvenient and inefficient pipe diameter measurement in inspection wells. Therefore, a measuring tool has been developed that allows for direct measurement of pipe diameters in inspection wells without requiring personnel to enter the well. Figure 1-5 The device shown is a pipe diameter measuring device for inspection wells, comprising a limiting sleeve 1 and a sliding rod 4. The limiting sleeve 1 is slidably fitted onto the sliding rod 4. A limiting plate 8 is fixedly connected to the bottom of the sliding rod 4. A first clamping plate 2 is fixedly connected to one side of the bottom of the limiting sleeve 1, and a second clamping plate 5 is fixedly connected to one side of the limiting plate 8. A first gripping rod 3 is fixedly connected to one side of the upper end of the limiting sleeve 1, and a second gripping rod 6 is fixedly connected to one side of the upper end of the sliding rod 4. The length of the sliding rod 4 is greater than the length of the limiting sleeve 1, and a scale line 7 is provided on the upper part of the sliding rod 4. To facilitate reading when measuring the pipe diameter, when the lower surface of the first clamping plate 2 is in contact with the upper surface of the second clamping plate 5, the upper edge of the limiting sleeve 1 is at the zero point of the scale line 7. To facilitate the measurement of the inner pipe diameter of open pipes in inspection wells, the thickness of the first clamping plate 2 and the second clamping plate 5 is set to a fixed thickness. It should be noted that in this embodiment, two opposing arc-shaped clamping plates are hinged to one side of the lower part of the limiting sleeve 1. The two clamping plates can be locked together by bolts. A flashlight is detachably connected between the two clamping plates. A conventional rechargeable flashlight can be used to illuminate the inspection well.

[0020] To prevent the sliding rod 4 from rotating relative to the limiting sleeve 1, which would cause the first clamping plate 2 and the second clamping plate 5 to shift and affect the pipe diameter measurement, a groove 10 is provided on one side of the sliding rod 4 along the axial direction. A protrusion 9 that matches the groove 10 is fixedly connected inside the limiting sleeve 1 along the axial direction. When the sliding rod 4 slides along the limiting sleeve 1, the protrusion 9 acts as a guide and slides along the groove 10.

[0021] To facilitate carrying the device, both the limiting sleeve 1 and the sliding rod 4 are designed as multi-part detachable connection structures. The limiting sleeve 1 consists of at least two detachable sleeve components. A connecting plate 11 is fixedly connected to the outer bottom of the upper sleeve component, and a connecting plate 11 is fixedly connected to the outer top of the lower sleeve component. The upper and lower sleeve components are connected by bolts 12 passing through the connecting plate 11. A first gripping rod 3 is fixedly connected to one side of the top of the uppermost sleeve component, and a first locking plate 2 is fixedly connected to one side of the bottom of the lowermost sleeve component. The sliding rod 4 consists of at least two detachable sliding rod components. A threaded rod 13 is fixedly connected to the bottom of the uppermost sliding rod component, and a threaded hole 14 is opened on the upper part of the lower sliding rod component. The upper and lower sliding rod components are threadedly connected by the threaded rod 13 and the threaded hole 14. A second gripping rod 6 is fixedly connected to one side of the top of the uppermost sliding rod component, and a limiting plate 8 is fixedly connected to the bottom of the lowermost sliding rod component. In this embodiment, in addition to the uppermost and lowermost sleeve and sliding rod components, multiple spare sleeve and sliding rod components can be provided in the middle for adjusting the length of the equipment structure to accommodate inspection wells of different depths. For ease of transport, this equipment is normally in a disassembled state.

[0022] The working principle of this embodiment is as follows:

[0023] When measuring the pipe diameter of pipe 16 inside manhole 15, the device is carried to the measurement area. Based on the depth of manhole 15, an appropriate number of sleeve fittings and sliding rod fittings are selected for connecting and installing the limiting sleeve 1 and sliding rod 4. After installation, the device is inserted into manhole 15 by grasping the second gripping rod 6. Then, one hand holds the first gripping rod 3 to fix it in place, while the other hand holds the second gripping rod 6 to press down the sliding rod 4, causing the first clamping plate 2 and the second clamping plate 5 to separate. When measuring the outer pipe diameter, the upper surface of the second clamping plate 5 is brought into contact with the bottom of pipe 16, and the first gripping rod 3 is pressed down to bring the lower surface of the first clamping plate 2 into contact with the top of pipe 16. At this time, observe the position of the limiting sleeve 1 relative to the scale line 7 and take a reading to obtain the outer diameter of the pipe 16; when measuring the inner diameter of an open pipe in a manhole, extend the lower part of the device into the manhole and extend the first clamping plate 2 and the second clamping plate 5 into the end of the pipe. Use the lower surface of the second clamping plate 5 to contact the bottom of the pipe, grasp the first gripping rod 3 and lift the limiting sleeve 1 upward so that the upper surface of the first clamping plate 2 contacts the top of the pipe. At this time, observe the position of the limiting sleeve 1 relative to the scale line 7 and take a reading. Add the reading to the fixed thickness value of the first clamping plate 2 and the second clamping plate 5 to obtain the inner diameter.

Claims

1. A device for measuring the diameter of pipes inside a manhole, characterized in that: The device includes a limiting sleeve (1) and a sliding rod (4). The limiting sleeve (1) is slidably sleeved on the sliding rod (4). A limiting plate (8) is fixedly connected to the bottom of the sliding rod (4). A first clamping plate (2) is fixedly connected to one side of the bottom of the limiting sleeve (1). A second clamping plate (5) is fixedly connected to one side of the limiting plate (8). A first gripping rod (3) is fixedly connected to one side of the upper end of the limiting sleeve (1). A second gripping rod (6) is fixedly connected to one side of the upper end of the sliding rod (4). The length of the sliding rod (4) is greater than the length of the limiting sleeve (1). A scale line (7) is provided on the upper part of the sliding rod (4).

2. The manhole diameter measuring device according to claim 1, characterized in that: The slide rod (4) has a groove (10) on one side along the axial direction, and the limiting sleeve (1) has a protrusion (9) that matches the groove (10) fixedly connected along the axis.

3. The manhole diameter measuring device according to claim 1 or 2, characterized in that: The limiting sleeve (1) is composed of at least two detachably connected sleeve parts. The upper sleeve part is fixedly connected to the outer bottom of the sleeve part and the lower sleeve part is fixedly connected to the outer top of the sleeve part. The upper and lower sleeve parts are connected by bolts (12) through the connecting plate (11). The uppermost sleeve part is fixedly connected to the top side of the sleeve part and the lowermost sleeve part is fixedly connected to the bottom side of the sleeve part.

4. The manhole diameter measuring device according to claim 3, characterized in that: The slide bar (4) is composed of at least two detachably connected slide bar components. The bottom of the upper slide bar component is fixedly connected to a threaded rod (13), and the upper part of the lower slide bar component is provided with a threaded hole (14). The upper and lower slide bars components are connected by the threaded rod (13) and the threaded hole (14). The top side of the uppermost slide bar component is fixedly connected to the second gripping rod (6), and the bottom of the lowermost slide bar component is fixedly connected to the limiting plate (8).

5. The manhole diameter measuring device according to claim 1, characterized in that: When the lower surface of the first card plate (2) is in contact with the upper surface of the second card plate (5), the upper edge of the limiting sleeve (1) is at the zero point of the scale line (7).

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