A method and device for non-excavation accurate positioning of deep-buried underground pipelines

Abstract

The application discloses a kind of trenchless accurate positioning method and device for underground pipeline, comprising the following steps: step one: mobile detection trolley is set on ground;Step two: detection trolley carries ground penetrating radar and adjustable inductive coil type accurate positioner to carry out positioning detection;Step three: ground penetrating radar is rotated and adjusted to be close to the ground to be measured, to query underground metal or non-metal pipeline distribution;Step four: by adjusting the spacing between inductive coils, the strength of signal between inductive coils is analyzed to determine the moving direction;Through the implementation of the application, the ground penetrating radar mechanism is used to find out the distribution of underground metal or non-metal pipelines, and pitch adjustment can be performed simultaneously.The positioning accuracy of single-coil mechanism can be improved based on existing technology through the accurate positioning mechanism, the cost of multiple-coil mechanism is reduced, the structure design is scientific and reasonable, and it has certain use value and popularization value.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underground pipeline positioning, in particular to a deep-buried underground pipeline non-excavation accurate positioning method and device. BACKGROUND

[0002] Urban underground pipelines refer to pipelines and their auxiliary facilities such as water supply, drainage, gas, heat, electricity, communication, broadcasting and television, and industry within a city, which are important infrastructures and "lifelines" to ensure the operation of the city.

[0003] The existing underground pipeline positioning devices are of excavation type and non-excavation type, wherein the non-excavation type positioning device detects and positions through an inductive coil, which has the following problems: the single-structure inductive coil has a too small coverage range and low positioning efficiency, and the design of a multi-inductive coil structure forms a relatively large coverage for positioning, but this structure design cannot be flexibly adjusted and has a relatively high cost and inconvenient actual use by only increasing the number of inductive coils. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a deep-buried underground pipeline non-excavation accurate positioning method and device, aiming to solve the above problems.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a non-excavation accurate positioning method for underground pipelines, comprising the following steps:

[0006] Step 1: setting a movable detection trolley on the ground;

[0007] Step 2: the detection trolley is loaded with a ground penetrating radar and an adjustable inductive coil type accurate positioner for positioning detection;

[0008] Step 3: rotating and adjusting the ground penetrating radar to be close to the ground to be measured, so as to query the distribution of underground metal or non-metal pipelines;

[0009] Step 4: adjusting the spacing between the inductive coils to analyze the strength of the signals between the inductive coils to determine the moving direction;

[0010] Step 5: the staff moves the detection trolley to the side with a stronger signal until the signal strength between the inductive coils is the same, or the signal strength of one of the inductive coils reaches the maximum to determine the pipeline position.

[0011] As a preferred embodiment of the present application, the number of inductive coils is not less than two.

[0012] As a preferred embodiment of the present application, the inductive signals of the inductive coils are fed back to a control display mechanism.

[0013] The utility model provides a kind of non-excavation accurate positioning device for underground pipeline, including detection trolley, ground penetrating radar mechanism and the display mechanism for showing pipeline positioning range are equipped on the detection trolley, the display mechanism and ground penetrating radar mechanism are respectively equipped in the left and right sides of detection trolley, ground penetrating radar mechanism is used for identifying the distribution situation of underground metal or non-metal pipeline by pitch adjustment, accurate positioning mechanism for automatically adjusting coverage range to improve positioning accuracy is further equipped on the detection trolley.By ground penetrating radar mechanism for identifying the distribution situation of underground metal or non-metal pipeline, pitch adjustment can be carried out simultaneously, and it is stored when idle, and by accurate positioning mechanism, the positioning accuracy of single coil mechanism can be improved on the basis of prior art, and the cost of multiple coil mechanism is reduced.

[0014] As a preferred embodiment of the present application, the accurate positioning mechanism includes a lifting mechanism, a driver, a connecting rod, and an induction coil set, the accurate positioning mechanism is installed in the detection trolley, the telescopic end of the lifting mechanism 41 is connected with a base for fixing the driver, the driving end of the driver is connected to the connecting rod through a transmission assembly, and the induction coil set is connected to the connecting rod.

[0015] As a preferred embodiment of the present application, the connecting rod is an electric cylinder.

[0016] As a preferred embodiment of the present application, the connecting rod is an electric cylinder.

[0017] As a preferred embodiment of the present application, the connecting rod is an electric cylinder.

[0018] As a preferred embodiment of the present application, the connecting rod is an electric cylinder.

[0019] As a preferred embodiment of the present application, the connecting rod is an electric cylinder.

[0020] The substantial effects of the present application are as follows:

[0021] 1. In the present application, the connecting rod can adjust the distance between the center induction coil and the planetary induction coil, thereby changing the detection and positioning range, and the planetary induction coil makes circular motion around the center induction coil to cover a circular detection and positioning area, which has relatively strong practicability.

[0022] 2、The ground penetrating radar mechanism is arranged to find out the distribution of underground metal or non-metal pipelines, can be adjusted in pitch, is stored when idle, and the positioning accuracy of the single coil mechanism is improved on the basis of the prior art through the accurate positioning mechanism, the cost of the multiple coil mechanism is reduced, outstanding progress is achieved, and the method has certain use value and popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural perspective view of the present application.

[0024] Figure 2 It is a structural front view of the present application.

[0025] Figure 3 It is a structural bottom view of the present application.

[0026] In the figure: 1 - detection trolley, 2 - ground penetrating radar mechanism, 3 - display mechanism, 4 - accurate positioning mechanism, 5 - center induction coil, 6 - planetary induction coil, 41 - lifting mechanism, 42 - driver, 43 - connecting rod. DETAILED DESCRIPTION

[0027] A non-excavation accurate positioning method for underground pipelines, comprising the following steps:

[0028] Step one: a movable detection trolley is arranged on the ground;

[0029] Step two: the detection trolley is loaded with a ground penetrating radar and an adjustable induction coil type accurate positioner for positioning detection;

[0030] Step three: the ground penetrating radar is rotated and adjusted to be close to the ground to be measured, so as to query the distribution of underground metal or non-metal pipelines;

[0031] Step four: the spacing between the induction coils is adjusted, and the signal strength between the induction coils is analyzed to determine the moving direction;

[0032] Step five: the staff moves the detection trolley to the side with a strong signal until the signal strength between the induction coils is the same, or the signal strength of one of the induction coils reaches the maximum, and then the pipeline position is determined.

[0033] The number of the induction coils is not less than two.

[0034] The induction signal of the induction coil is fed back to the control display mechanism.

[0035] As Figure 1As shown in the figure, a non-excavation accurate positioning device for underground pipeline comprises a detection trolley 1, a ground penetrating radar mechanism 2 and a display mechanism 3 for displaying the pipeline positioning range are arranged on the detection trolley 1, the display mechanism 3 and the ground penetrating radar mechanism 2 are arranged on the left and right sides of the detection trolley 1 respectively, the ground penetrating radar mechanism 2 is used for pitch adjustment to identify the distribution of underground metal or non-metal pipelines, and an accurate positioning mechanism 4 for automatically adjusting the coverage range to improve the positioning accuracy is further arranged on the detection trolley 1.

[0036] As shown in the figure, Figure 2 , 3 The accurate positioning mechanism 4 comprises a lifting mechanism 41, a driver 42, a connecting rod 43 and an induction coil group, the accurate positioning mechanism 4 is installed in the detection trolley 1, the telescopic end of the lifting mechanism 41 is connected with a base for fixing the driver 42, the driving end of the driver 42 is connected to the connecting rod 43 through a transmission assembly, and the induction coil group is connected to the connecting rod 43.

[0037] The connecting rod 43 is an electric cylinder, and the telescopic length can be accurately controlled through the electric cylinder, so as to adjust the coverage range of the induction coil group.

[0038] The connecting rod 43 is an electric cylinder, and the telescopic length can be accurately controlled through the electric cylinder, so as to adjust the coverage range of the induction coil group.

[0039] The induction coil group comprises a center induction coil 5 and a planetary induction coil 6, the distance between the center induction coil 5 and the planetary induction coil 6 is adjustable, and the planetary induction coil 6 moves in a circular motion around the center induction coil 5, the induction coil group is formed by the center induction coil 5 and the planetary induction coil 6 with adjustable distance, so as to judge and adjust the positioning pipeline according to the strength of the induction signal to achieve more accurate positioning.

[0040] An opening for adjusting the height of the driver 42, the connecting rod 43 and the induction coil group is arranged in the middle of the bottom wall of the detection trolley 1, and a handrail is arranged on the side of the detection trolley 1 close to the display mechanism 3, so as to facilitate the lifting adjustment of the accurate positioning mechanism 4 through the opening.

[0041] The ground penetrating radar mechanism 2 and the accurate positioning mechanism 4 are both connected to the display mechanism 3.

[0042] The present application carries out mobile detection and positioning by taking the detection trolley 1 as a carrier to drive the ground penetrating radar mechanism 2 and the accurate positioning mechanism 4, adjusts the ground penetrating radar mechanism 2 to adhere to the ground to find out the distribution of underground metal or non-metal pipelines, and carries out flexible and adjustable detection and positioning work by the lifting mechanism 41, the driver 42, the connecting rod 43 and the induction coil group of the accurate positioning mechanism 4, specifically adjusts the height of the induction coil group to be close to the ground by the lifting mechanism 41, adjusts the initial length of the connecting rod 43 according to the need, then starts the driver 42 to drive the connecting rod 43 and the induction coil group (the central induction coil 5 and the planetary induction coil 6) installed thereon to rotate, detects the underground pipeline by the circular coverage formed by the rotation of the planetary induction coil 6 around the central induction coil 5, when the induction signal of the planetary induction coil 6 is stronger than that of the central induction coil 5, the azimuth signal strength is displayed on the display mechanism 3, the staff moves the detection trolley 1 to the side with stronger signal strength, and adjusts according to the induction signal strength of the planetary induction coil 6 and the central induction coil 5, so as to accurately and efficiently position the position of the ground pipeline.

[0043] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A trenchless precision positioning device for deeply buried underground pipelines, characterized in that, The system includes a detection vehicle (1), which is equipped with a ground-penetrating radar mechanism (2) and a display mechanism (3) for displaying the pipeline positioning range. The display mechanism (3) and the ground-penetrating radar mechanism (2) are respectively located on the left and right sides of the detection vehicle (1). The ground-penetrating radar mechanism (2) is used for pitch adjustment to identify the distribution of underground metal or non-metal pipelines. The detection vehicle (1) is also equipped with a precision positioning mechanism (4) for automatically adjusting the coverage area to improve positioning accuracy. The precision positioning mechanism (4) includes a lifting mechanism (41), a driver (42), and a connecting rod (43). The precise positioning mechanism (4) is installed inside the probe trolley (1). The telescopic end of the lifting mechanism (41) is connected to a base for fixing the driver (42). The driving end of the driver (42) is connected to the connecting rod (43) through a transmission assembly. The induction coil group is connected to the connecting rod (43). The induction coil group includes a central induction coil (5) and a planetary induction coil (6). The distance between the central induction coil (5) and the planetary induction coil (6) is adjustable, and the planetary induction coil (6) moves in a circular motion around the central induction coil (5).

2. The trenchless precision positioning device for underground pipelines according to claim 1, characterized in that, The connecting rod (43) is an electric cylinder.

3. The trenchless precision positioning device for underground pipelines according to claim 2, characterized in that, Induction coil sets are installed at both ends of the connecting rod (43).

4. The trenchless precision positioning device for underground pipelines according to claim 1, characterized in that, The bottom wall of the detection vehicle (1) has an opening in the middle for adjusting the height of the driver (42), connecting rod (43) and induction coil group, and a handrail is provided on the side of the detection vehicle (1) near the display mechanism (3).

5. The trenchless precision positioning device for underground pipelines according to claim 1, characterized in that, The ground-penetrating radar mechanism (2) and the precise positioning mechanism (4) are both connected to the display mechanism (3).

6. A positioning method using the trenchless precision positioning device for deeply buried underground pipelines as described in claim 1, characterized in that, Includes the following steps: Step 1: Set up a movable probe vehicle on the ground; Step 2: The detection vehicle is equipped with ground-penetrating radar and an adjustable inductive coil-type precision locator for positioning and detection. Step 3: Rotate and adjust the ground penetrating radar to be close to the ground to be measured, so as to find out the distribution of underground metal or non-metal pipelines; Step 4: By adjusting the spacing between the induction coils, analyze the strength of the signal between the induction coils to determine the direction of movement; Step 5: The staff moves the detection trolley to the side with the stronger signal until the signal strength between the induction coils is the same, or the signal strength of one of the induction coils reaches its maximum, to determine the pipeline location.

7. The method for trenchless precise positioning of deeply buried underground pipelines according to claim 6, characterized in that, There are at least two induction coils.

8. The method for trenchless precise positioning of deeply buried underground pipelines according to claim 7, characterized in that, The sensing signal from the induction coil is fed back to the control and display mechanism.

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