A housing for a subsurface pipeline mapper and a subsurface pipeline mapper

Abstract

The utility model relates to a casing and underground pipeline surveying instrument for underground pipeline surveying instrument, wherein the casing includes: support main body, connecting pipe and connecting end, the both ends of connecting pipe are respectively with support main body and connecting end detachable sealed connection, support main body is the hollow structure of axial both ends opening, and the one end of support main body away from connecting pipe is detachably installed with docking transmission port, and support main body is installed with touch -control display panel and data interface on the lateral wall of connecting pipe outside, docking transmission port, touch -control display panel, data interface are respectively with support main body sealed connection, the connecting end is the hollow structure of axial both ends opening, and the one end of connecting end away from connecting pipe is set up and is closed structure. The installation position of each component of the scheme has carried out waterproof sealed design, effectively improved its overall sealing performance after the assembly is completed, fully guaranteed the service life and reliability of the underground pipeline surveying instrument of using the scheme.

Description

Technical Field

[0001] This utility model relates to the field of pipeline detection equipment technology, and in particular to a housing for an underground pipeline mapping instrument and an underground pipeline mapping instrument. Background Technology

[0002] In modern urban construction and infrastructure planning, accurate mapping of underground pipelines is crucial. Underground pipelines are like the "lifeline" of a city, encompassing various types such as water supply, drainage, gas, electricity, and communications. Their accurate location, direction, and depth play a decisive role in the construction, maintenance, and safe operation of the city. Therefore, the performance of underground pipeline mapping equipment directly affects the quality and efficiency of the mapping work.

[0003] Currently, existing underground pipeline mapping instruments on the market have significant deficiencies in waterproofing. On one hand, many instruments lack any waterproof design, making their internal electronic components highly susceptible to short-circuit damage when exposed to humid environments or accidental water splashes. This severely impacts normal operation and may even lead to data loss, causing considerable disruption to mapping work. On the other hand, even those instruments claiming waterproofing lack waterproofing testing interfaces. This means that during routine maintenance and testing, personnel cannot easily and effectively check and evaluate the waterproofing performance. If a potential waterproofing seal is compromised and continued use goes unnoticed, water ingress may eventually cause equipment failure, increasing repair costs, extending downtime, and ultimately affecting the progress of the entire mapping project.

[0004] Meanwhile, the data interface design of existing underground pipeline mapping instruments is also unsatisfactory. Most of their data interfaces use plugs or sockets, a design that reveals numerous drawbacks in practical use. First, frequent plugging and unplugging easily wears down the contact parts between the plug and socket, leading to unstable data transmission, severely affecting the accuracy of data reading, and potentially even causing data loss. Moreover, with increased plugging and unplugging, the lifespan of the plug or socket is significantly shortened, increasing equipment maintenance costs and potentially causing equipment malfunction due to data interface damage, affecting the continuity of mapping work. Second, this plug-or-socket type of data interface has a low protection level and cannot effectively resist the intrusion of external contaminants such as dust and moisture. Once dust or moisture enters the data interface, it can cause poor contact, short circuits, and other problems, further reducing the reliability and lifespan of the data interface.

[0005] It is evident that the existing underground pipeline mapping instruments suffer from problems in waterproofing and data interface, which severely restrict the performance and lifespan of the equipment. There is an urgent need for a new design to improve the waterproofing performance, extend the lifespan of the data interface, and enhance waterproof and dustproof capabilities to meet the growing demands of underground pipeline mapping work. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a housing for an underground pipeline mapping instrument and the underground pipeline mapping instrument itself.

[0007] To achieve the above-mentioned utility model objectives, this utility model provides a housing for an underground pipeline mapping instrument, comprising: a support body, a connecting pipe, and a connecting end; The two ends of the connecting pipe are respectively detachably and sealed to the supporting body and the connecting end; The support body is a hollow structure with openings at both ends along the axis, and a docking transmission port can be detachably installed at the end of the support body away from the connecting pipe. A touch display panel and a data interface are detachably installed on the side wall of the support body located outside the connecting pipe. The docking transmission port, touch display panel, and data interface are respectively sealed and connected to the supporting body. The connecting end is a hollow structure with openings at both ends in the axial direction, and a sealing structure is provided at the end of the connecting end away from the connecting pipe.

[0008] According to one aspect of the present invention, the end of the supporting body away from the connecting pipe and the end of the connecting end away from the connecting pipe are respectively provided with annular docking structures; The outer surface of the annular docking structure is provided with a screw thread.

[0009] According to one aspect of the present invention, an annular protrusion that increases radially is provided on the outer surface of the annular docking structure; The engagement thread is provided on the outer surface of the annular protrusion; Along the axial direction of the annular docking structure, the annular protrusion is spaced apart from the opposite ends of the annular docking structure.

[0010] According to one aspect of the present invention, a positioning groove is provided at the end of the annular docking structure that is away from the supporting body or away from the connecting end; Along the axial direction of the annular docking structure, the positioning groove forms an opening on the end face of the annular docking structure; Along the radial direction of the annular docking structure, the positioning groove forms openings on opposite sides of the annular docking structure.

[0011] According to one aspect of the present invention, the hollow portion of the support body is provided with an enlarged receiving cavity; The receiving cavity forms a first opening for mounting a touch display panel and a second opening for mounting a data interface on the side wall of the supporting body; The touch display panel is fitted and connected to the first opening; The data interface is fitted into the second opening.

[0012] According to one aspect of the present invention, an extension structure is provided at one end of the support body that extends into the connecting pipe; The extension structure includes: a long strip support member and a ring-shaped support member; One end of the elongated support member is connected to the annular support member, and the other end is connected to the support body; The annular support is coaxially arranged with the support body.

[0013] According to one aspect of the present invention, a first annular groove is provided on the outer side of one end of the support body that extends into the connecting pipe; A second annular groove is provided on the outer side of the end of the connecting end that extends into the connecting pipe; A sealing ring is provided in the first annular groove and the second annular groove respectively; The outer side of the annular support member may optionally be provided with a third annular groove, and a sealing ring may optionally be provided in the third annular groove.

[0014] According to one aspect of the present invention, the touch display panel and the data interface are arranged on opposite sides of the supporting body.

[0015] According to one aspect of the present invention, the sealing structure is a sealing plug or a one-way valve; The data interface is a magnetic interface.

[0016] To achieve the above-mentioned utility model objectives, this utility model provides an underground pipeline mapping instrument, comprising: a housing as described above, a PCB circuit board disposed within the housing, and a battery; The docking transmission port, the touch display panel, the data interface, and the battery are respectively connected to the PCB circuit board.

[0017] According to one aspect of this utility model, the installation positions of each component of the housing are designed to be waterproof and sealed, which effectively improves the overall sealing performance after assembly, making it easier to adapt to measurements in dusty, humid, or water-related environments, and fully ensuring the service life and reliability of the underground pipeline mapping instrument using this approach.

[0018] According to one aspect of this utility model, the sealing performance of the housing can be more conveniently tested by setting a sealing structure at the connection end. In particular, when the sealing structure is set as a one-way valve, it can be tested at any time during the measurement process, making the solution safer in dusty, humid or water-filled environments. This is more beneficial for ensuring the reliability of use in harsh environments and the security of measurement data.

[0019] According to one embodiment of this utility model, the touch display panel and the data interface are distributed in different directions, which can fully avoid mutual interference and effectively ensure the ease of use of this embodiment.

[0020] According to one embodiment of this utility model, a magnetic data interface is adopted, which offers greater ease of operation and allows for automatic attachment of the data cable. It also provides superior applicability and convenience in harsh environments. Furthermore, it enhances the durability of the structure, effectively avoiding the drawbacks of traditional plug-in interfaces that are prone to wear and tear, leading to poor contact. According to one aspect of this utility model, a positioning groove is provided at the free end of the annular docking structure, which can be used to ensure accurate connection of the external traction structure and avoid relative sliding between the external traction structure and the annular docking structure, thereby improving the reliability of the connection. This is especially beneficial for the accurate and stable docking of the external data transmission interface and the docking transmission port. Attached Figure Description

[0021] Figure 1 This is a front view of the housing of an underground pipeline mapping instrument according to one embodiment of the present invention. Figure 2 A perspective view of the housing of an underground pipeline mapping instrument according to one embodiment of the present invention; Figure 3 This is a front view of the housing of an underground pipeline mapping instrument according to one embodiment of the present invention. Figure 4 This is a rear view of the housing of an underground pipeline mapping instrument according to one embodiment of the present invention. Figure 5 A cross-sectional view of the housing of an underground pipeline mapping instrument according to one embodiment of the present invention; Figure 6 This is a structural diagram of the support body according to one embodiment of the present utility model; Figure 7 This is a structural diagram of the connection end of one embodiment of the present invention. Detailed Implementation

[0022] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] In describing embodiments of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" express orientations or positional relationships based on the orientations or positional relationships shown in the relevant drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described in detail here, but the embodiments of the present invention are not limited to the following embodiments.

[0025] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, a housing for an underground pipeline mapping instrument includes: a support body 11, a connecting pipe 12, and a connecting end 13. In this embodiment, the support body 11, the connecting pipe 12, and the connecting end 13 are coaxially connected in sequence to form a columnar structure. The two ends of the connecting pipe 12 are detachably and sealingly connected to the support body 11 and the connecting end 13, respectively. Specifically, the two ends of the connecting pipe 12 are respectively sleeved on the ends of the support body 11 and the connecting end 13, and are locked at the connection position using threaded connectors to ensure reliable and stable installation. In this embodiment, multiple mounting positions for threaded connectors can be equally spaced circumferentially at the connection position, and the corresponding fixing can be achieved by screwing in the threaded connectors after the sleeve is completed.

[0026] In this embodiment, the support body 11 is a hollow structure with openings at both ends along the axis. A docking transmission port 11a is detachably installed at the end of the support body 11 furthest from the connecting pipe 12. A touch display panel 11b and a data interface 11c are detachably installed on the side wall of the support body 11 outside the connecting pipe 12. The docking transmission port 11a is used to connect with an external transmission port to receive externally input electrical signals for calculating the pipeline length. The docking transmission port 11a can be inserted into the opening at the end of the support body 11, and the annular baffle around the docking transmission port 11a abuts against the end of the support body 11. A threaded connector is then used to lock it to the end of the support body 11 for a fixed installation. To ensure sufficient waterproofing between the docking transmission port 11a and the support body 11, a sealing mechanism can be implemented at the connection point, for example, by installing a sealing ring or applying sealant to the connection point, thus ensuring its waterproof and dustproof performance.

[0027] In this embodiment, the touch display panel 11b and the side wall of the support body 11 can also be connected to each other using threaded connectors, which will not be described in detail here. The touch display panel 11b can be an LCD touch screen or a mechanical button LCD screen. To fully ensure the waterproof and dustproof performance between the touch display panel 11b and the support body 11, sealing can be further implemented at the connection points. For example, sealing can be achieved by installing sealing rings or applying sealant at the connection points to fully guarantee its waterproof and dustproof performance.

[0028] In this embodiment, the data interface 11c and the side wall of the support body 11 can be installed using threaded connections, snap-fit ​​connections, or adhesive bonding. To fully ensure the waterproof and dustproof performance between the data interface 11c and the support body 11, sealing can be further implemented at the connection points, for example, by installing sealing rings or applying sealant at the connection points, to fully guarantee their waterproof and dustproof performance.

[0029] In this embodiment, the connecting end 13 is a hollow structure with openings at both ends in the axial direction, and a sealing structure 131 is provided at the end of the connecting end 13 away from the connecting pipe 12; wherein, the function of the sealing structure 131 is to seal the opening at the end of the connecting end 13, and it is detachably connected to the opening at the end of the connecting end 13 to realize replacement under different usage conditions.

[0030] With the above-mentioned design, the installation positions of each component of the housing in this solution are all waterproof and sealed, which effectively improves the overall sealing performance after assembly. This makes it easier to adapt to measurements in dusty, humid, or water-related environments, and fully guarantees the service life and reliability of the underground pipeline mapping instrument using this solution.

[0031] Combination Figure 4 and Figure 5 As shown, according to one embodiment of this utility model, the sealing structure 131 is a sealing plug or a one-way valve. In this embodiment, when the sealing structure 131 is set as a one-way valve, an external air source can be connected to the sealing structure 131 and gas at a preset pressure can be injected into the housing of this solution. After the preset pressure is reached inside the housing, the gas injection is stopped to maintain the pressure for a preset time. Furthermore, a pressure gauge is connected to the one-way valve to test the internal pressure maintenance state. If it is higher than the preset value, it can be confirmed that the sealing performance inside the housing is excellent. Therefore, the sealing structure 131 can be kept as a one-way valve or replaced with a sealing plug.

[0032] With the above settings, the sealing performance of the housing can be more conveniently tested by setting a sealing structure 131 at the connection end 13. In particular, when the sealing structure 131 is set as a one-way valve, it can be tested at any time during the measurement process, making the solution safer when passing through dusty, humid or water-filled environments. This is more beneficial to ensuring the reliability of use in harsh environments and the security of measurement data.

[0033] Combination Figure 1 , Figure 2 and Figure 5 As shown, according to one embodiment of the present invention, the touch display panel 11b and the data interface 11c are arranged on opposite sides of the support body 11.

[0034] With the above settings, the touch display panel 11b and the data interface 11c can be distributed in different directions, which can effectively avoid mutual interference and ensure the ease of use of this solution.

[0035] like Figure 2 As shown, according to one embodiment of the present invention, the data interface 11c is a magnetic interface.

[0036] With the above-described design, the magnetic data interface 11c offers greater ease of operation, automatically attracting the data cable and providing superior applicability and convenience in harsh environments. Furthermore, it enhances structural durability, effectively avoiding the drawbacks of traditional plug-in interfaces that are prone to wear and tear leading to poor contact. Combination Figure 1 and Figure 2As shown, according to one embodiment of the present invention, annular docking structures 14 are respectively provided at the end of the support body 11 away from the connecting pipe 12 and at the end of the connecting end 13 away from the connecting pipe 12; wherein, the outer surface of the annular docking structure 14 is provided with a screw thread. The provided screw thread facilitates docking and installation with the traction structure, thereby improving the convenience of its connection.

[0037] In this embodiment, the axial length of the annular docking structure 14 is greater than the protruding length of the docking transmission port 11a at the end of the support body 11. Therefore, the annular docking structure 14 can completely enclose the docking transmission port 11a, thus directly protecting the annular docking structure 14 after docking with the external traction structure. This achieves protection and sealing of the annular docking structure 14, further improving the dustproof and waterproof properties of this solution. Combination Figure 1 and Figure 2 As shown, according to one embodiment of the present invention, an annular protrusion 141 with radially increasing size is provided on the outer surface of the annular docking structure 14; wherein, a screw thread is provided on the outer surface of the annular protrusion 141; and, along the axial direction of the annular docking structure 14, the annular protrusion 141 and the opposite ends of the annular docking structure 14 are respectively spaced apart. In this embodiment, one end of the annular docking structure 14 connected to the support body 11 or the connecting end 13 can be defined as the fixed end, and the other end is positioned as the free end. The distance between the annular protrusion 141 and the fixed end is smaller than the distance between the annular protrusion 141 and the free end. Furthermore, the distance between the annular protrusion 141 and the fixed end can be matched with the size of the sealing ring. Thus, when the external nut is screwed into the thread on the annular protrusion 141, the sealing of the connection position can be achieved by the abutment of the external nut and the sealing ring. This is more beneficial to improving the sealing performance of the connection position between this solution and the external traction structure, thereby more reliably preventing external dust or moisture from entering the annular docking structure 14, which is more beneficial to ensuring the safe and reliable input of external signals.

[0038] Combination Figure 1 and Figure 2 As shown, according to one embodiment of the present invention, a positioning groove 142 is provided at one end of the annular docking structure 14 away from the supporting body 11 or away from the connecting end 13; wherein, along the axial direction of the annular docking structure 14, the positioning groove 142 forms an opening on the end face of the annular docking structure 14; along the radial direction of the annular docking structure 14, the positioning groove 142 forms openings on opposite sides of the annular docking structure 14. In this embodiment, the positioning groove 142 can be provided as one, or multiple grooves can be provided at equal intervals along the circumference of the annular docking structure 14.

[0039] With the above settings, the positioning groove 142 is provided at the free end of the annular docking structure 14, which can be used to ensure the accuracy of the external traction structure during connection and to avoid relative sliding between the external traction structure and the annular docking structure 14, thereby improving the reliability of the connection. This is especially beneficial for the accurate and stable docking of the external data transmission interface and the docking transmission port 11a.

[0040] Combination Figure 5 and Figure 6 As shown, according to one embodiment of the present invention, the hollow portion of the support body 11 is provided with an enlarged receiving cavity 11d; wherein, the receiving cavity 11d forms a first opening for mounting a touch display panel 11b and a second opening for mounting a data interface 11c on the side wall of the support body 11. In this embodiment, the provided receiving cavity 11d facilitates the wiring of the touch display panel 11b and the data interface 11c, and the larger receiving space ensures the ease of installation of each structure; wherein, to form the first opening, a portion of the side wall can be cut off in the form of a cut surface, wherein the axial length of the cut portion matches the length of the touch display panel 11b, and the width of the touch display panel 11b can be matched by controlling the depth of the cut. In this configuration, the touch display panel 11b can be fitted and connected to the first opening, and the touch display panel 11b can be fixed to the first opening by a threaded connector to close the receiving cavity 11d. Of course, to improve the sealing performance, corresponding sealing structures can be set during installation, which will not be elaborated here. Similarly, to form the second opening, a portion of the sidewall can be cut off in the form of a cut surface. The axial length of the cut portion matches the width of the data interface 11c, and the length of the data interface 11c can be matched by controlling the depth of the cut. In this configuration, the data interface 11c can be fitted and connected to the second opening, and the data interface 11c can be fixed to the second opening by means of threaded connectors or adhesive bonding to achieve the closure of the receiving cavity 11d. Of course, to improve the sealing performance, appropriate sealing structures can be set during the installation process.

[0041] With the above configuration, by mounting the touch display panel 11b and the data interface 11c on the side wall of the support body 11 in a fitted manner, the support body 11 itself can form a certain enclosure for the touch display panel 11b and the data interface 11c, thereby effectively protecting the touch display panel 11b and the data interface 11c and improving the reliability of this solution.

[0042] Combination Figure 5 and Figure 6As shown, according to one embodiment of the present invention, an extension structure 11e is provided at one end of the support body 11 that extends into the connecting pipe 12; wherein, the function of the extension structure 11e is to install and support the corresponding PCB circuit board; specifically, the extension structure 11e includes: a long strip support member 11e1 and an annular support member 11e2; wherein, one end of the long strip support member 11e1 is connected to the annular support member 11e2, and the other end is connected to the support body 11; in this embodiment, the annular support member 11e2 is coaxially arranged with the support body 11.

[0043] In this embodiment, the long support member 11e1 is offset relative to the axis of the support body 11. This effectively avoids the hollow part in the middle, which facilitates the laying of wires. Of course, it also provides a larger installation space, so as to fully accommodate the corresponding structure in a small space.

[0044] In this embodiment, the side of the long support member 11e1 used for mounting the PCB circuit board is set as a plane to facilitate the arrangement of the corresponding support, while the other side of the long support member 11e1 can be set as an arc surface to match the shape of the inner wall of the connecting pipe 12, and at the same time, it can effectively increase the structural strength of the long support member 11e1, thus achieving stable and reliable support for the PCB circuit board.

[0045] In this embodiment, the diameter of a portion of the outer surface of the annular support 11e2 is set to match the inner diameter of the connecting pipe 12. Therefore, stable support for the long support 11e1 can be achieved through the coaxial connection of the annular support 11e2 and the connecting pipe 12, which is more beneficial for ensuring the stability of the long support 11e1. Furthermore, the fact that the diameter of the remaining portion of the annular support 11e2 is smaller than the inner diameter of the connecting pipe 12 effectively reduces the resistance during installation of the support body 11 and the connecting pipe 12, thus improving the ease of installation.

[0046] Combination Figure 5 , Figure 6 and Figure 7 As shown, according to one embodiment of the present invention, a first annular groove is provided on the outer side of one end of the support body 11 that extends into the connecting pipe 12; wherein, along the axial direction of the support body 11, the first annular groove can be one or more; correspondingly, a second annular groove is provided on the outer side of one end of the connecting end 13 that extends into the connecting pipe 12; wherein, along the axial direction of the connecting end 13, the second annular groove can be one or more. In this embodiment, sealing rings are respectively provided in the first annular groove and the second annular groove; it should be noted that the dimensions of the first annular groove and the second annular groove can be set to be different, and the corresponding sealing rings can also be different, and are not limited to the same structural design, as long as they can meet the requirements of sealing and ease of installation.

[0047] Furthermore, a third annular groove can be optionally provided on the outer side of the annular support member 11e2, and a sealing ring can optionally be provided in the third annular groove. By selectively providing a sealing ring on the outer side of the annular support member 11e2, the gap between the annular support member 11e2 and the connecting pipe 12 can be eliminated based on the function of the sealing ring, so as to ensure more stable support for the long strip support member 11e1. Of course, the elastic properties of the sealing ring can also play a certain role in vibration damping and buffering, which is also beneficial to ensuring the operational stability of the internal structure.

[0048] like Figure 5 As shown, according to one embodiment of this utility model, to facilitate smooth docking of the connecting pipe 12 with the support body 11 and the connecting end 13, the inner diameter of the connecting pipe 12 near its end can be increased. This allows the connecting pipe 12 to easily pass through the installed sealing ring during insertion, ensuring smooth insertion. Furthermore, the axial length of the increased inner diameter portion of the connecting pipe 12 can be set as needed to ensure smooth insertion and complete contact between the sealing ring and the inner wall of the connecting pipe 12 after insertion, thus ensuring a good sealing effect. In this embodiment, the increased inner diameter portion of the connecting pipe 12 can be set as a tapered annular shape to gradually reduce the radial spacing during insertion, thereby achieving reliable contact with the sealing ring after insertion.

[0049] According to one embodiment of the present invention, an underground pipeline mapping instrument includes: a housing as described above, a PCB circuit board and a battery disposed within the housing; in this embodiment, the PCB circuit board can be directly mounted on the extension structure 11e, while the battery can be integrated onto the PCB circuit board or mounted on the connecting pipe 12 between the support body 11 and the connecting end 13. In this embodiment, the docking transmission port 11a, the touch display panel 11b, the data interface 11c and the battery are respectively connected to the PCB circuit board; each connection structure can be implemented using quick-connect plugs, which will not be described in detail here.

[0050] The above content is merely an example of a specific solution of this utility model. For the equipment and structures not described in detail, it should be understood that they are implemented using common equipment and methods already available in the field.

[0051] The above description is merely one solution of this utility model and is not intended to limit it. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A housing for an underground pipeline mapping instrument, characterized in that, include: Support body (11), connecting pipe (12) and connecting end (13); The two ends of the connecting pipe (12) are detachably and sealed to the supporting body (11) and the connecting end (13), respectively; The support body (11) is a hollow structure with openings at both ends in the axial direction. The end of the support body (11) away from the connecting pipe (12) is detachably equipped with a docking transmission port (11a). The support body (11) is detachably equipped with a touch display panel (11b) and a data interface (11c) on the side wall outside the connecting pipe (12). The docking transmission port (11a), touch display panel (11b), and data interface (11c) are respectively sealed and connected to the support body (11); The connecting end (13) is a hollow structure with openings at both ends in the axial direction, and a sealing structure (131) is provided at the end of the connecting end (13) away from the connecting pipe (12).

2. The housing for an underground pipeline mapping instrument according to claim 1, characterized in that, The supporting body (11) at the end away from the connecting pipe (12) and the connecting end (13) at the end away from the connecting pipe (12) are respectively provided with annular docking structures (14). The outer surface of the annular docking structure (14) is provided with a screw thread.

3. The housing for an underground pipeline mapping instrument according to claim 2, characterized in that, The outer surface of the annular docking structure (14) is provided with an annular protrusion (141) that increases in the radial direction. The threaded connection is provided on the outer surface of the annular protrusion (141); Along the axial direction of the annular docking structure (14), the annular protrusion (141) and the opposite ends of the annular docking structure (14) are respectively spaced apart.

4. The housing for an underground pipeline mapping instrument according to claim 3, characterized in that, The annular docking structure (14) has a positioning groove (142) at one end away from the supporting body (11) or the connecting end (13). Along the axial direction of the annular docking structure (14), the positioning groove (142) forms an opening on the end face of the annular docking structure (14); Along the radial direction of the annular docking structure (14), the positioning groove (142) forms openings on opposite sides of the annular docking structure (14).

5. The housing for an underground pipeline mapping instrument according to any one of claims 1 to 4, characterized in that, The hollow part of the support body (11) is provided with an enlarged receiving cavity (11d). The receiving cavity (11d) forms a first opening for mounting a touch display panel (11b) and a second opening for mounting a data interface (11c) on the side wall of the support body (11); The touch display panel (11b) is fitted and connected to the first opening; The data interface (11c) is fitted into the second opening.

6. The housing for an underground pipeline mapping instrument according to any one of claims 1 to 4, characterized in that, The support body (11) has an extension structure (11e) at one end that extends into the connecting pipe (12). The extension structure (11e) includes: a long strip support (11e1) and a ring support (11e2). One end of the long strip support (11e1) is connected to the ring support (11e2), and the other end is connected to the support body (11); The annular support (11e2) is coaxially arranged with the support body (11).

7. The housing for an underground pipeline mapping instrument according to claim 6, characterized in that, The outer side of one end of the support body (11) that extends into the connecting pipe (12) is provided with a first annular groove; A second annular groove is provided on the outer side of one end of the connecting end (13) that extends into the connecting tube (12); A sealing ring is provided in the first annular groove and the second annular groove respectively; The outer side of the annular support (11e2) may optionally be provided with a third annular groove, and a sealing ring may optionally be provided in the third annular groove.

8. The housing for an underground pipeline mapping instrument according to any one of claims 1 to 4, characterized in that, The touch display panel (11b) and the data interface (11c) are arranged on opposite sides of the support body (11).

9. The housing for an underground pipeline mapping instrument according to any one of claims 1 to 4, characterized in that, The sealing structure (131) is a sealing plug or a one-way valve; The data interface (11c) is a magnetic interface.

10. An underground pipeline mapping instrument, characterized in that, include: The housing as described in any one of claims 1 to 9, and the PCB circuit board and the battery disposed within the housing; The docking transmission port (11a), the touch display panel (11b), the data interface (11c), and the battery are respectively connected to the PCB circuit board.

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