Induction clamp for urban underground pipeline surveying instrument

Abstract

The utility model provides an induction clamp for an urban underground pipeline surveying and mapping instrument, which relates to the technical field of pipeline surveying and mapping and comprises a shell and a fixed clamp fixedly connected onto the shell. The movable clamp can be vertically and movably connected into the shell, and a clamping space is formed by the movable clamp and the fixed clamp; the transmission assembly comprises a gear and a rack which are arranged in the shell, the upper end of the rack is fixedly connected with the movable clamp, and the lower end of the rack extends into the shell and is meshed with the gear; the driving assembly is in transmission connection with the gear and drives the gear to drive the rack and the movable clamp to move vertically, and opening and closing of the clamping space are formed. In the design, the movable clamp adopts a mode of moving up and down, so that the occupied space can be obviously reduced in the vertical direction, the device is particularly suitable for the environment with complex and dense underground pipelines and limited space, obstacles can be more flexibly avoided, interference is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline surveying technology, and in particular to an induction clamp for an urban underground pipeline surveying instrument. Background Technology

[0002] With the accelerating pace of urbanization, the density and complexity of underground pipeline networks are increasing daily. To ensure the safe operation of these pipelines, frequent inspections, maintenance, and data mapping are necessary. During mapping, a detector is typically used. The detector's inductive clamps are placed on the pipeline, creating a closed magnetic field to detect current or signals within the pipeline. These detected signals are then transmitted to the detector via circuitry to achieve accurate mapping of the underground pipelines.

[0003] For example, the underground pipeline detection clamp described in patent application number 202421181915.2 and the clamp for an underground pipeline detector described in patent application number 202420472890.5 both use clamps with a lateral opening and closing mechanism. During vertical operations, they often require a large horizontal expansion space, which is particularly insufficient in confined and complex underground pipeline environments. Since underground pipelines are usually closely spaced, the lateral opening and closing action of the clamp may interfere with surrounding pipelines or other structures, not only reducing operational efficiency but also increasing the risk of damaging the clamp or surrounding pipelines. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, the invention proposes an inductive clamp for an urban underground pipeline mapping instrument.

[0005] The technical solution to the technical problem solved by this utility model is as follows:

[0006] This utility model proposes an inductive clamp for an urban underground pipeline mapping instrument, comprising a housing; a fixed clamp fixedly connected to the upper end face of the housing; a movable clamp vertically movable and connected inside the housing, forming a clamping space together with the fixed clamp; a transmission assembly including a gear and a rack disposed inside the housing, the upper end of the rack being fixedly connected to the movable clamp, and the lower end extending into the housing and meshing with the gear; and a drive assembly connected to the gear transmission, driving the gear to rotate forward and backward, thereby causing the rack and movable clamp to move vertically, thus opening and closing the clamping space.

[0007] Preferably, both the fixed clamp and the movable clamp have a semi-circular structure, thereby forming an annular clamping space.

[0008] Preferably, guide rails are fixedly connected to the upper and lower sides of the housing, and sliding grooves are provided on the upper and lower sides of the rack, with the sliding grooves forming a sliding fit with the guide rails.

[0009] Preferably, a clearance opening is provided on one side wall of the housing, and the clearance opening is located below the movable clamp.

[0010] Preferably, the drive assembly includes a rotating motor fixed inside the housing, and the output shaft of the rotating motor is fixedly connected to a gear.

[0011] Preferably, it also includes an extension rod, which is rotatably connected to the housing, allowing the housing to rotate relative to the extension rod.

[0012] Preferably, a drive motor is provided inside the extension rod, and the output shaft of the drive motor passes through the extension rod and is connected to an irregular shaft. An irregular hole adapted to the irregular shaft is provided on the housing, and the irregular shaft is inserted into the housing through the irregular hole, thereby driving the housing to rotate.

[0013] Preferably, a screw is fixedly connected to the other side of the irregular shaft, and an anti-detachment cap is threaded onto the screw.

[0014] Preferably, the outer wall of the shell is provided with anti-slip texture, which is a continuous wavy concave structure.

[0015] Preferably, a camera and / or lighting equipment are detachably connected to the housing.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] 1. In this utility model, the movable clamp adopts a vertical movement mechanism. This structure can significantly reduce the space occupied in the vertical direction, and is especially suitable for environments with complex and dense underground pipelines and limited space. Due to its compact design, this vertically moving movable clamp can retract into the housing when moving downwards, allowing it to more flexibly avoid obstacles, reduce interference, and thus improve work efficiency.

[0018] 2. This utility model has an extension rod connected to one side of the housing, allowing the housing to rotate relative to the extension rod. The extension rod enables the two clamps to operate at different angles and positions, adapting to complex pipeline layouts and improving operational flexibility.

[0019] 3. In this utility model, the extension rod and the housing are detachably connected through the cooperation of components such as irregular shaft, irregular hole and anti-detachment cap. The installation or disassembly of the extension rod and the housing can be completed within one minute, which can adapt to the rapid switching needs of different working scenarios. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0021] Figure 1 This is a three-dimensional structural diagram of the closed fixed clamp and inductive clamp in Embodiment 1.

[0022] Figure 2 yes Figure 1 A cross-sectional view of the interior of the middle shell.

[0023] Figure 3 This is a three-dimensional structural diagram of the opening of the fixed clamp and the inductive clamp in Embodiment 1.

[0024] Figure 4 yes Figure 3 A cross-sectional view of the interior of the middle shell.

[0025] Figure 5 This is a three-dimensional structural diagram of Embodiment 2 of this utility model.

[0026] Figure 6 yes Figure 5 Exploded view of the detachable connection between the middle extension rod and the housing.

[0027] Figure 7 This is a schematic diagram of the surveying process in a complex underground pipeline, as described in Example 2.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Housing; 2. Fixed clamp; 3. Movable clamp; 4. Clamping space; 5. Rack; 6. Gear; 7. Rotating motor; 8. Guide rail; 9. Slide groove; 10. Clearance opening; 11. Extension rod; 12. Drive motor; 13. Irregular shaft; 14. Irregular hole; 15. Screw; 16. Anti-detachment cap. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Example 1

[0034] like Figures 1 to 4 As shown, this embodiment proposes an inductive clamp for an urban underground pipeline mapping instrument, including a housing 1, a fixed clamp 2, a movable clamp 3, a transmission assembly, and a drive assembly. The fixed clamp 2 is fixedly connected to the upper end face of the housing 1; the movable clamp 3 can be vertically connected to the inside of the housing 1, forming a clamping space 4 with the fixed clamp 2 to accommodate the pipeline to be measured, so that the pipeline to be measured can be within the closed magnetic field range of the coil; the transmission assembly includes a gear 6 and a rack 5 disposed inside the housing 1. The upper end of the rack 5 is fixedly connected to the movable clamp 3, and the lower end extends into the inside of the housing 1 and meshes with the gear 6; the drive assembly is connected to the gear 6 for transmission, driving the gear 6 to rotate forward and backward, thereby driving the rack 5 and the movable clamp 3 to move vertically, forming the opening and closing of the clamping space 4.

[0035] Both the fixed clamp 2 and the movable clamp 3 have coils in their inner rings. When the two are closed, the coils inside form a closed circuit. The pipeline to be measured is within the closed magnetic field range of the coil, and the current or signal in the pipeline can be detected by Faraday's law of electromagnetic induction. The detected signal is then transmitted to the mapping instrument through the circuit, thereby achieving the purpose of mapping underground pipelines.

[0036] This design employs a vertically moving clamp 3 instead of the traditional horizontal opening design, significantly reducing the space occupied in the vertical direction. It is particularly suitable for environments with complex and dense underground pipelines and limited space. In confined spaces, traditional horizontally opening clamps may interfere with other pipelines or structures, restricting the deployment process and even damaging surrounding facilities. This vertically moving clamp 3, due to its compact design, can retract into the housing 1 when moving downwards, allowing for more flexible obstacle avoidance, reduced interference, and thus improved operational efficiency.

[0037] In this embodiment, the fixed clamp 2 and the movable clamp 3 are preferably semi-circular in shape, thereby forming an annular clamping space 4. However, they are not limited to this shape; they can also be any shape suitable for enclosing the pipeline and forming a closed clamping space 4, such as square, elliptical, or other polygonal shapes.

[0038] While the construction of the fixed clamp 2 and the movable clamp 3 is not strictly limited, forming a ring-shaped clamping space 4 is more suitable in practical applications because the ring-shaped magnetic field distribution is more uniform, which is beneficial to improving signal stability. The semi-circular clamp structure is more adaptable to pipelines of different diameters, and is especially flexible when operating in confined spaces.

[0039] In this embodiment, guide rails 8 are fixedly connected to the upper and lower sides of the housing 1, and sliding grooves 9 are provided on the upper and lower sides of the rack 5, forming a sliding fit with the guide rails 8. This design effectively restricts the movement direction of the rack 5, preventing it from deviating or wobbling during vertical movement, thus improving overall stability. Simultaneously, this structure effectively reduces friction during the movement of the rack 5, reducing wear between components and extending the overall lifespan.

[0040] In this embodiment, a clearance opening 10 is provided on one side of the housing 1. The clearance opening 10 is located below the movable clamp 3, providing sufficient space for the vertical movement of the movable clamp 3, avoiding interference between the movable clamp 3 and the housing 1 during vertical movement, and ensuring that it can perform opening and closing operations smoothly.

[0041] In this embodiment, the drive assembly includes a rotary motor 7 fixed inside the housing 1. The output shaft of the rotary motor 7 is fixedly connected to the gear 6. A first switch button is provided on one side of the housing 1, and the rotary motor 7 is connected to the first switch button for control. Furthermore, the start and stop of the rotary motor 7 can be directly controlled by a surveying instrument. In this design, the rotary motor 7 drives the gear 6 to rotate, and the gear 6 further drives the rack 5 to move vertically within the housing 1, allowing for one-handed operation even in a low space, reducing complex movements. The rotary motor 7 in this embodiment has self-locking properties, maintaining a closed loop of its internal coils after closing, and automatically maintaining clamping force to prevent gravity or vibration from causing the pipeline to detach from the clamping space 4.

[0042] In this embodiment, the outer wall of the housing 1 is provided with anti-slip texture, which is a connected wavy recessed structure. The wavy recessed texture forms a multi-directional friction resistance surface. In the humid and oily environment of underground pipelines, when the operator holds the housing 1 wearing gloves, the recessed structure can effectively fit the glove texture, significantly improve the grip friction, and prevent the hand from slipping during operation.

[0043] In this embodiment, a camera and / or lighting equipment are detachably connected to the housing 1. The lighting equipment provides a directional light source to directly illuminate the clamping area, avoiding positioning deviations or operational errors caused by insufficient light. The camera can capture the contact status between the clamp and the pipeline in real time, helping the operator to remotely observe the clamping effect in environments with limited visibility.

[0044] Example 2

[0045] refer to Figures 5 to 7 Based on embodiment 1, an extension rod 11 is provided, which is rotatably connected to the housing 1, so that the housing 1 can rotate relative to the extension rod 11.

[0046] Specifically, a drive motor 12 is installed inside the extension rod 11. The output shaft of the drive motor 12 passes through the extension rod 11 and is connected to a non-circular shaft 13. A non-circular hole 14 adapted to the non-circular shaft 13 is provided on the housing 1. The non-circular shaft 13 is inserted into the housing 1 through the non-circular hole 14, thereby driving the housing 1 to rotate.

[0047] In this design, the extension rod 11 allows inspectors to clamp and inspect underground pipelines on the surface without having to drill into the well, thus avoiding potential safety hazards during underground operations. At the same time, the use of the extension rod 11 reduces the need for operators to enter confined environments where harmful gases may be present, ensuring personal safety.

[0048] A second switch button is provided on the extension rod 11. The second switch button is connected to the drive motor 12 for control. The drive motor 12 drives the irregular shaft 13 to rotate, thereby further driving the housing 1 to rotate relative to the extension rod 11. (Reference) Figure 7 The extension rod 11 enables the clamp to operate at different angles and positions, adapting to complex pipeline layouts and improving operational flexibility.

[0049] In this embodiment, one side of the irregular shaft 13 is connected to the drive motor 12, and the other side of the irregular shaft 13 is fixedly connected to a screw 15, on which an anti-detachment cap 16 is threaded. At this time, the extension rod 11 and the anti-detachment cap 16 are located on both sides of the housing 1, thereby achieving the purpose of preventing the irregular shaft 13 from coming out of the irregular hole 14.

[0050] Furthermore, the extension rod 11 is connected to the housing 1 via a detachable connection using a shaped shaft 13, a shaped hole 14, and an anti-detachment cap 16. This allows for the installation or removal of the extension rod 11 within one minute, adapting to the rapid switching needs of different work scenarios. For example, in spacious or close-range operations, the clamps can be operated directly without the extension rod 11, avoiding spatial interference caused by an excessively long extension rod 11. In scenarios requiring long-distance operations, such as deep wells, by adding the extension rod 11, the operator can complete surveying operations from a safe distance, avoiding some dangerous actions.

[0051] Although the specific embodiments of the invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the invention. Based on the technical solutions of the invention, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the invention.

Claims

1. A sensor clamp for an urban underground pipeline mapping instrument, characterized in that, include: Shell (1); The clamp (2) is fixedly connected to the upper end face of the housing (1); The movable clamp (3) is vertically movable and connected to the housing (1), forming a clamping space (4) together with the fixed clamp (2); The transmission assembly includes a gear (6) and a rack (5) disposed inside the housing (1). The upper end of the rack (5) is fixedly connected to the movable clamp (3), and the lower end extends into the housing (1) and meshes with the gear (6). The drive assembly is connected to the gear (6) for transmission. The drive gear (6) rotates in both directions to drive the rack (5) and the movable clamp (3) to move vertically, thereby opening and closing the clamping space (4).

2. The inductive clamp for an urban underground pipeline mapping instrument according to claim 1, characterized in that, Both the fixed clamp (2) and the movable clamp (3) are semi-circular in structure, thus forming an annular clamping space (4).

3. The inductive clamp for an urban underground pipeline mapping instrument according to claim 1, characterized in that, The housing (1) is fixedly connected to the upper and lower sides of the guide rail (8), and the rack (5) is provided with the upper and lower sides of the slide groove (9), and the slide groove (9) and the guide rail (8) form a sliding fit.

4. The inductive clamp for an urban underground pipeline mapping instrument according to claim 1, characterized in that, The housing (1) has a clearance opening (10) on one side wall, and the clearance opening (10) is located below the movable clamp (3).

5. The inductive clamp for an urban underground pipeline mapping instrument according to claim 1, characterized in that, The drive unit includes a rotating motor (7) fixed inside the housing (1), and the output shaft of the rotating motor (7) is fixedly connected to the gear (6).

6. The inductive clamp for an urban underground pipeline mapping instrument according to claim 1, characterized in that, It also includes an extension rod (11), which is rotatably connected to the housing (1) so that the housing (1) can rotate relative to the extension rod (11).

7. The inductive clamp for an urban underground pipeline mapping instrument according to claim 6, characterized in that, The extension rod (11) is equipped with a drive motor (12). The output shaft of the drive motor (12) passes through the extension rod (11) and is connected to a non-circular shaft (13). The housing (1) is provided with a non-circular hole (14) that is adapted to the non-circular shaft (13). The non-circular shaft (13) is inserted into the housing (1) through the non-circular hole (14), thereby driving the housing (1) to rotate.

8. The inductive clamp for an urban underground pipeline mapping instrument according to claim 7, characterized in that, A screw (15) is fixedly connected to the other side of the irregular shaft (13), and an anti-detachment cap (16) is threaded onto the screw (15).

9. The inductive clamp for an urban underground pipeline mapping instrument according to claim 1, characterized in that, The outer wall of the shell (1) is provided with anti-slip texture, which is a continuous wave-shaped concave structure.

10. The inductive clamp for an urban underground pipeline mapping instrument according to claim 1, characterized in that, A camera and / or lighting equipment are detachably connected to the housing (1).

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