Drain pipe detection device for building water supply and drainage engineering

Abstract

The invention discloses a drainage pipe detection device for building water supply and drainage engineering, and relates to the technical field of water supply and drainage pipeline detection, the drainage pipe detection device comprises a machine body and a bearing fixedly mounted on the outer side of the machine body, an obstacle crossing mechanism is arranged on the outer side of the bearing, and the obstacle crossing mechanism comprises a coarse adjustment assembly, a fine adjustment assembly, an auxiliary leveling assembly and a torsion assembly; the coarse adjustment assembly comprises an outer cylinder fixedly installed on the outer side of the bearing, a threaded cylinder is fixedly installed on the outer side of the outer cylinder, adjusting rings are in threaded connection with the two ends of the threaded cylinder, the adjusting rings are rotationally connected with supporting rods through movable rings and inner rotating bases, and anti-rotation springs are fixedly installed on the inner sides of the supporting rods. The device has the technical effects that by utilizing the obstacle crossing mechanism, the walking mechanism and the self-cleaning camera shooting mechanism, accurate adaptation and stable crossing of pipelines with different pipe diameters and automatic cleaning of a camera lens are realized, the limitation of a traditional detection tool in coping with complex and changeable environments in the pipelines is effectively solved, and the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of water supply and drainage pipeline detection, in particular to a drainage pipe detection device for building water supply and drainage engineering. Background Art

[0002] As an indispensable infrastructure in buildings and municipal facilities, water supply and drainage pipes bear the key functions of supplying clean water and discharging wastewater. They are not only directly related to the convenience and comfort of residents' daily lives, but also play a vital role in maintaining public health, rationally managing water resources and protecting the environment. Therefore, regular maintenance and inspection of water supply and drainage pipes to ensure that they are smooth and leak-free is a necessary measure to ensure their long-term stable operation, effectively reduce the occurrence of failures, and thus extend their service life.

[0003] However, many traditional inspection tools and equipment currently have obvious limitations when dealing with the complex and ever-changing working environment inside the pipeline. Especially when there are sediments and tree roots accumulated inside the pipeline, these traditional tools are often difficult to effectively penetrate, resulting in difficulty in comprehensive coverage of the inspection work and lack of accuracy in the inspection results. Therefore, we propose a new type of drainage pipe inspection device for building water supply and drainage engineering. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a drainage pipe detection device for building water supply and drainage engineering, which solves the problem that current traditional drainage pipe detection tools are difficult to cope with complex environments and various diameters, resulting in incomplete and inaccurate detection.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drainage pipe detection device for building water supply and drainage engineering, comprising a body and a bearing fixedly installed on the outside of the body, an obstacle-crossing mechanism is arranged on the outside of the bearing, a walking mechanism is arranged on the outside of the obstacle-crossing mechanism, and the obstacle-crossing mechanism comprises a coarse adjustment component, a fine adjustment component, an auxiliary leveling component and a torsion component.

[0008] The coarse adjustment component includes an outer cylinder fixedly installed on the outside of the bearing, a threaded cylinder fixedly installed on the outside of the outer cylinder, adjustment rings are threadedly connected at both ends of the threaded cylinder, the adjustment ring is connected to a support rod through a movable ring and an inner rotating seat, and an anti-rotation spring is fixedly installed on the inside of the support rod.

[0009] The fine-tuning assembly includes a fine-tuning gear rod slidably connected to the inside of the support rod, the upper end of the fine-tuning gear rod is rotatably connected to an external rotating seat, and the inside of the support rod is also rotatably connected to a gear meshing with the fine-tuning gear rod. A fine-tuning knob is fixedly installed on one end of the gear, and a spring box is fixedly installed on the other end. A pressing spring and a pressing column are provided in the spring box, and a chuck at the end of the pressing column is clamped with a clamping ring on the support rod.

[0010] The auxiliary leveling component comprises a reference ring fixedly installed at the middle section of the threaded tube, a measuring ruler slidably connected to the reference ring runs through the reference ring, and the other end of the measuring ruler is fixedly connected to the adjusting ring.

[0011] The torsion assembly includes a motor fixedly mounted on the machine body, a rotating rod fixedly mounted on the output end of the motor, a telescopic sleeve vertically fixedly mounted on the other end of the rotating rod, the telescopic sleeve is fixedly connected to the inner rotating seat, an electric telescopic rod is also symmetrically mounted on the machine body, and an arc block is fixedly mounted on the output end of the electric telescopic rod.

[0012] Preferably, anti-slip plates are fixedly installed at both ends of the threaded barrel;

[0013] The inner cavity of the adjusting ring is provided with a thread groove which matches with the thread barrel;

[0014] The anti-self-rotation spring is made of high-carbon alloy steel, copper alloy and a new ceramic-metal composite material.

[0015] Preferably, a plurality of evenly distributed anti-slip protrusions are fixedly mounted on the outer side of the fine-tuning knob;

[0016] The pressing column is slidably connected to the spring box, and one end of the pressing column is located in the spring box;

[0017] The chuck is composed of a circular disc and two triangular prisms, and a clamping groove adapted to the triangular prisms is arranged on the inner side of the clamping ring.

[0018] Preferably, the walking mechanism includes a motor box fixedly mounted on the outside of an outer rotating seat, a dual-axis motor is fixedly mounted inside the motor box, an active anti-skid roller is fixedly mounted on the output end of the dual-axis motor, a wheel rod is symmetrically mounted on the outside of the motor box, and a driven anti-skid roller is rotatably connected to the outside of the wheel rod.

[0019] Preferably, a self-cleaning camera mechanism is provided at one end of the machine body close to the electric telescopic rod, and the self-cleaning camera mechanism comprises a camera fixedly mounted at one end of the machine body close to the electric telescopic rod;

[0020] The camera is provided with an air guide cover fixedly mounted on the outside of the body, and a fan is fixedly mounted on one end of the air guide cover away from the camera lens, and the air outlet of the fan is connected to the inner cavity of the air guide cover;

[0021] An air outlet nozzle is fixedly installed at one end of the inner side of the air guide cover close to the camera lens piece, and the air inlet of the air outlet nozzle is communicated with the inner cavity of the air guide cover.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides a method having the following beneficial effects:

[0024] 1. The present invention realizes accurate adaptation and stable crossing of pipelines with different diameters by setting up an obstacle-crossing mechanism, including a coarse adjustment component, a fine adjustment component, an auxiliary leveling component and a torsion component. The coordinated use of the coarse adjustment component and the fine adjustment component can quickly adjust the diameter of the device so that it fits tightly with the inner wall of the pipeline, while the auxiliary leveling component ensures the horizontal state of the device in the pipeline, further improving the detection accuracy. When encountering an obstacle, the torsion component can adjust the angle of the support rod to enable the walking mechanism to smoothly cross the obstacle and continue to move forward for detection, thereby solving the problem that traditional detection tools are difficult to cope with the complex and changeable environment inside the pipeline.

[0025] 2. The present invention provides the device with forward power and ensures stable driving on the slippery or inclined inner wall of the pipeline by setting a walking mechanism, including a motor box, a dual-axis motor, an active anti-skid roller and a driven anti-skid roller. The design of the active anti-skid roller and the driven anti-skid roller not only improves the driving stability of the device, but also enables it to adapt to various complex pipeline environments, effectively responding to the challenges of the complex environment inside the pipeline.

[0026] 3. The present invention can automatically clean the dust and impurities on the surface of the camera lens and maintain the clarity of the lens by setting a self-cleaning camera mechanism, including a camera, an air guide, a fan and a circularly distributed air outlet nozzle. This design ensures the quality of the image captured during the inspection process, provides intuitive inspection results for inspectors, enables them to promptly discover and deal with problems inside the pipeline, and thus ensures the accuracy and reliability of the inspection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 For the present invention Figure 1 A schematic diagram of the front view structure of

[0029] Figure 3 It is another perspective structural schematic diagram of the present invention;

[0030] Figure 4 For the present invention Figure 3 A schematic diagram of the front view structure of

[0031] Figure 5 For the present invention Figure 3 A schematic diagram of the cross-sectional structure of;

[0032] Figure 6 It is a schematic diagram of the structure of the walking mechanism of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the dual-axis motor of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the fine-tuning component of the present invention;

[0035] Fig. 9 It is a schematic diagram of the structure of the chuck and the clasp ring of the present invention;

[0036] Fig.10 It is a schematic diagram of the structure of the self-cleaning camera mechanism of the present invention.

[0037] In the figure:

[0038] 1. Body;

[0039] 2. Bearings;

[0040] 3. Cross-barrier institutions;

[0041] 31. Coarse adjustment assembly; 311. Outer cylinder; 312. Threaded cylinder; 313. Adjustment ring; 314. Movable ring; 315. Inner rotating seat; 316. Support rod; 317. Anti-rotation spring;

[0042] 32. fine-tuning assembly; 321. fine-tuning gear rod; 322. outer rotating seat; 323. gear; 324. fine-tuning knob; 325. spring box; 326. pressing spring; 327. pressing column; 328. chuck; 329. snap ring;

[0043] 33. Auxiliary leveling assembly; 331. Reference ring; 332. Measuring ruler;

[0044] 34. Torsion assembly; 341. Motor; 342. Rotating rod; 343. Telescopic sleeve; 344. Electric telescopic rod; 345. Arc block;

[0045] 4. Traveling mechanism; 41. Motor box; 42. Dual-axis motor; 43. Active anti-skid roller; 44. Wheel rod; 45. Driven anti-skid roller;

[0046] 5. Self-cleaning camera mechanism; 51. Camera; 52. Air guide cover; 53. Fan; 54. Air outlet nozzle. DETAILED DESCRIPTION

[0047] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0048] The present invention provides a technical solution:

[0049] See also Figures 1 to 10 The invention discloses a drainage pipe detection device for building water supply and drainage engineering, comprising a body 1 and a bearing 2 fixedly mounted on the outside of the body 1, a barrier-crossing mechanism 3 is arranged on the outside of the bearing 2, and the barrier-crossing mechanism 3 comprises a coarse adjustment component 31, a fine adjustment component 32, an auxiliary leveling component 33 and a torsion component 34.

[0050] The coarse adjustment component 31 includes an outer cylinder 311 fixedly mounted on the outer side of the bearing 2, a threaded cylinder 312 fixedly mounted on the outer side of the outer cylinder 311, an adjustment ring 313 threadedly connected at both ends of the threaded cylinder 312, the adjustment ring 313 is rotatably connected to a support rod 316 through a movable ring 314 and an inner rotating seat 315, an anti-self-rotation spring 317 is fixedly mounted on the inner side of the support rod 316, and the threaded connection between the threaded cylinder 312 on the coarse adjustment component 31 and the adjustment ring 313 is used to achieve rapid adjustment of the diameter of the device to adapt to pipes of different diameters. The linkage design of the movable ring 314, the inner rotating seat 315 and the support rod 316 further ensures the accuracy of the adjustment. The anti-self-rotation spring 317 effectively prevents the self-rotation of the adjustment ring 313, ensuring the stable operation of the device in a complex environment.

[0051] The fine-tuning assembly 32 includes a fine-tuning gear rod 321 slidably connected to the inside of the support rod 316, the upper end of the fine-tuning gear rod 321 is rotatably connected to an outer rotating seat 322, and the inside of the support rod 316 is also rotatably connected to a gear 323 meshing with the fine-tuning gear rod 321, a fine-tuning knob 324 is fixedly installed at one end of the gear 323, and a spring box 325 is fixedly installed at the other end, and a pressing spring 326 and a pressing column 327 are arranged in the spring box 325, and a chuck 328 at the end of the pressing column 327 is engaged with a snap ring 329 on the support rod 316, and the fine adjustment of the length of the support rod 316 is achieved through the engagement of the fine-tuning gear rod 321 on the fine-tuning assembly 32 with the gear 323. The snap connection design of the pressing column 327, the chuck 328 and the snap ring 329 ensures the stability after fine-tuning. This assembly enables the device to fit the inner wall of pipes of different diameters more closely, thereby improving the accuracy and stability of detection.

[0052] The auxiliary leveling assembly 33 includes a reference ring 331 fixedly mounted at the middle section of the threaded cylinder 312, a measuring ruler 332 slidably connected to the reference ring 331 is passed through the reference ring 331, and the other end of the measuring ruler 332 is fixedly connected to the adjustment ring 313. Through the cooperation between the measuring ruler 332 and the reference ring 331 on the auxiliary leveling assembly 33, the position change of the adjustment ring 313 is monitored in real time, thereby ensuring that the walking mechanism 4 remains horizontal during the adjustment process. This design effectively avoids the error caused by the tilt of the device, improves the detection accuracy and stability, and provides a strong guarantee for subsequent accurate detection.

[0053] The torsion assembly 34 includes a motor 341 fixedly mounted on the body 1, a rotating rod 342 fixedly mounted on the output end of the motor 341, a telescopic sleeve 343 vertically fixedly mounted on the other end of the rotating rod 342, the telescopic sleeve 343 is fixedly connected to the inner rotating seat 315, and an electric telescopic rod 344 is symmetrically mounted on the body 1, an arc block 345 is fixedly mounted on the output end of the electric telescopic rod 344, the rotating rod 342 and the telescopic sleeve 343 are driven by the motor 341 on the torsion assembly 34 to realize the swing adjustment of the inner rotating seat 315 and the support rod 316, and the electric telescopic rod 344 pushes the arc block 345 to provide stable support, so that the device can flexibly cross obstacles in the pipeline, ensure the continuous detection operation, and improve the detection efficiency and adaptability.

[0054] Furthermore, anti-dropout plates are fixedly installed at both ends of the threaded tube 312. The anti-dropout plates fixed at both ends of the threaded tube 312 can prevent the adjustment ring 313 from failing due to accidental dropout during the adjustment process, thereby ensuring the stability and safety of the device size adjustment. This is a key component to ensure that the detection device can adapt to different pipe diameters and work stably.

[0055] The inner cavity of the adjusting ring 313 is provided with a thread groove that matches with the threaded barrel 312. The thread groove of the inner cavity of the adjusting ring 313 matches with the threaded barrel 312, so that the adjusting ring 313 can stably move along the threaded barrel 312, thereby accurately adjusting the diameter of the device to adapt to different pipe diameters, thereby ensuring the stability and detection accuracy of the detection device in the pipeline;

[0056] The anti-rotation spring 317 is made of high-carbon alloy steel, copper alloy and new ceramic-metal composite materials. The anti-rotation spring 317 made of high-carbon alloy steel, copper alloy and new ceramic-metal composite materials enhances the strength, corrosion resistance and fatigue resistance of the spring, ensures its stable operation in a complex environment, and maintains the stability of the opening angle of the support rod 316.

[0057] Furthermore, a plurality of evenly distributed anti-skid protrusions are fixedly installed on the outer side of the fine-tuning knob 324. The outer side of the fine-tuning knob 324 is fixedly installed with a plurality of evenly distributed anti-skid protrusions. These protrusions increase the friction between the hand and the knob to prevent slipping during operation in a wet or oily environment, thereby ensuring the accuracy and stability of the fine-tuning process.

[0058] The pressing column 327 is slidably connected to the spring box 325, and one end of the pressing column 327 is located in the spring box 325, and the clamping and unlocking of the chuck 328 and the clamping ring 329 are realized by elastic force, which facilitates the rotation operation of the fine-tuning knob 324 and the locking after fine-tuning, thereby ensuring the stability of the device during the detection process;

[0059] The chuck 328 is composed of a circular disk and two triangular prisms. A slot matching the triangular prism is provided on the inner side of the retaining ring 329. Through the matching structure of the triangular prism and the slot of the chuck 328 and the retaining ring 329, a stable connection after fine-tuning is achieved, ensuring the stability of the position of the fine-tuning component 32 on the support rod 316, thereby ensuring the stability and accuracy of the detection device when moving in the pipeline.

[0060] Furthermore, the walking mechanism 4 includes a motor box 41 fixedly mounted on the outside of the outer rotating seat 322, a dual-axis motor 42 fixedly mounted inside the motor box 41, an active anti-skid roller 43 fixedly mounted on the output end of the dual-axis motor 42, a wheel rod 44 symmetrically mounted on the outside of the motor box 41, a driven anti-skid roller 45 rotatably connected to the outside of the wheel rod 44, the active anti-skid roller 43 and the driven anti-skid roller 45 are driven by the dual-axis motor 42 on the walking mechanism 4, ensuring that the detection device can move forward stably in a complex pipeline, effectively coping with challenges such as slippery, tilted and obstacles, and improving the comprehensiveness and accuracy of the detection operation.

[0061] Furthermore, a self-cleaning camera mechanism 5 is provided at one end of the machine body 1 close to the electric telescopic rod 344. The self-cleaning camera mechanism 5 includes a camera 51 fixedly mounted on one end of the machine body 1 close to the electric telescopic rod 344. The camera 51 is fixedly mounted on the machine body 1 to ensure that the internal conditions of the pipeline can be photographed in real time during the detection process. At the same time, the fan 53 and the air outlet nozzle 54 are used to automatically clean the lens to keep the picture clear, thereby improving the accuracy and reliability of the detection result.

[0062] The camera 51 is provided with an air guide cover 52 fixedly mounted on the outside of the body 1. A fan 53 is fixedly mounted on one end of the air guide cover 52 away from the lens of the camera 51. The air outlet of the fan 53 is connected with the inner cavity of the air guide cover 52. The air guide cover 52 and the fan 53 are combined and the air flow generated by the fan 53 is guided to the lens of the camera 51 by the air guide cover 52, so that the lens is automatically cleaned, the shooting picture is ensured to be clear, and the detection accuracy is improved.

[0063] An air outlet nozzle 54 is fixedly installed on one end of the inner side of the air guide cover 52 close to the lens of the camera 51. The air inlet of the air outlet nozzle 54 is connected to the inner cavity of the air guide cover 52. The air in the air guide cover 52 is evenly guided to the lens of the camera 51 through the air outlet nozzle 54, ensuring that the lens is fully cleaned without cleaning dead corners, maintaining lens clarity, and improving detection accuracy.

[0064] Furthermore, there are a plurality of air outlet nozzles 54, which are distributed in a circular shape on the inner side of the air guide cover 52, wherein the air outlets of the air outlet nozzles 54 are directed toward the lens of the camera 51. By distributing the air outlet nozzles 54 in a circular shape and directed toward the lens, it is ensured that wind blows evenly over all parts of the lens, thoroughly cleaning dust and impurities, maintaining lens clarity, and improving detection accuracy and reliability.

[0065] When used specifically, the working principle of the present invention is as follows:

[0066] When using the drainage pipe detection device for building water supply and drainage engineering, the primary challenge faced is the diversity of drainage pipe diameters. First, enter the rough adjustment stage. The operator manually turns the adjustment ring 313 according to the diameter of the pipe to be detected to move it on the threaded cylinder 312. This action drives the lateral movement of the movable ring 314. Since the movable ring 314 is fixedly connected to the inner rotating seat 315, the inner rotating seat 315 also moves accordingly. The movement of the inner rotating seat 315 further changes the opening angle of the support rod 316, thereby achieving a preliminary adjustment of the diameter of the device. In this process, the anti-rotation spring 317 plays a key stabilizing role. It prevents the adjustment ring 313 from rotating due to vibration, ensuring the stability of the opening angle of the support rod 316.

[0067] After the coarse adjustment is completed, the fine adjustment stage begins. The operator releases the locking state of the chuck 328 and the retaining ring 329, and disengages the chuck 328 from the retaining ring 329 by pressing the pressing column 327. Then, the fine adjustment knob 324 is turned, and the fine adjustment knob 324 drives the gear 323 to rotate. Since the gear 323 is engaged with the fine adjustment gear rod 321 inside the support rod 316, the rotation of the gear 323 will drive the fine adjustment gear rod 321 to telescope inside the support rod 316. After the fine adjustment is completed, the chuck 328 is released, the pressing spring 326 is restored, and the chuck 328 is pushed again to be clamped in the retaining ring 329 to complete the locking. This action further fine-tunes the fit between the walking mechanism 4 and the inner wall of the pipeline, ensuring the stable operation of the device.

[0068] During the size adjustment process, the auxiliary leveling assembly 33 plays a key monitoring and adjustment role. The cooperation between the measuring ruler 332 and the reference ring 331 monitors the position of the adjustment ring 313 in real time, thereby ensuring that the walking mechanism 4 remains level in the pipeline. This design greatly improves the detection accuracy and avoids errors caused by the tilt of the device.

[0069] When the size of the device is adjusted to fully match the diameter of the pipeline to be inspected, the operator puts the device into the pipeline port and starts the dual-axis motor 42 on the walking mechanism 4 through the external controller. The dual-axis motor 42 drives the active anti-skid roller 43 to rotate, providing the device with forward power. The design of the active anti-skid roller 43 and the driven anti-skid roller 45 ensures that the device can travel stably on the slippery or inclined inner wall of the pipeline, effectively coping with the challenges of the complex environment inside the pipeline.

[0070] During the inspection process, the camera 51 is responsible for capturing images of the interior of the pipeline and transmitting the real-time images to an external terminal, which provides the inspectors with intuitive inspection results, enabling them to promptly discover and handle problems within the pipeline.

[0071] When the device encounters an obstacle inside the pipe, the camera 51 sends the obstacle situation to the operator. The operator then issues a command through the external controller to control the electric telescopic rod 344 on the torsion assembly 34 to push the rubber arc block 345 outward, contact the inner wall of the pipe and apply pressure. This action provides a stable force point for the device, avoiding the device from losing control due to obstacles. At the same time, the motor 341 drives the rotating rod 342 to rotate, driving the telescopic sleeve 343, the movable ring 314 and the inner rotating seat 315 to rotate and swing. This action adjusts the angle of the support rod 316, so that the walking mechanism 4 can smoothly cross the obstacle and continue to move forward for detection.

[0072] In addition, the device is also equipped with a self-cleaning camera mechanism 5 to deal with dust and other impurities that may be attached to the surface of the camera lens 51. When the lens needs to be cleaned, the operator starts the fan 53 through an external controller. The wind generated by the fan 53 blows into the wind guide hood 52, and the wind is evenly blown to the camera lens 51 through the circularly distributed air outlet nozzles 54. This design ensures that all parts of the lens can be fully cleaned, thereby maintaining the clarity of the lens. This provides strong support for the smooth progress of the detection work and ensures the accuracy and reliability of the detection results.

[0073] In summary, the drainage pipe detection device for building water supply and drainage engineering effectively solves the shortcomings of traditional detection tools when facing the complex environment inside the pipe through its unique walking mechanism 4, obstacle crossing mechanism 3 and self-cleaning camera mechanism 5. It improves the efficiency and accuracy of detection work and provides strong technical support for the maintenance and repair of water supply and drainage pipes.

[0074] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A drainage pipe detection device for building water supply and drainage engineering, comprising a body (1) and a bearing (2) fixedly mounted on the outside of the body (1), characterized in that: An obstacle-crossing mechanism (3) is arranged on the outer side of the bearing (2), and a walking mechanism (4) is arranged on the outer side of the obstacle-crossing mechanism (3); The obstacle-crossing mechanism (3) comprises a coarse adjustment component (31), a fine adjustment component (32), an auxiliary leveling component (33) and a torsion component (34); The coarse adjustment assembly (31) comprises an outer cylinder (311) fixedly mounted on the outer side of the bearing (2), a threaded cylinder (312) fixedly mounted on the outer side of the outer cylinder (311), an adjustment ring (313) threadedly connected at both ends of the threaded cylinder (312), the adjustment ring (313) rotatably connected to a support rod (316) via a movable ring (314) and an inner rotating seat (315), and an anti-rotation spring (317) fixedly mounted on the inner side of the support rod (316); The fine-tuning assembly (32) includes a fine-tuning gear rod (321) slidably connected to the inside of the support rod (316); the upper end of the fine-tuning gear rod (321) is rotatably connected to an outer rotating seat (322); the inside of the support rod (316) is also rotatably connected to a gear (323) meshing with the fine-tuning gear rod (321); a fine-tuning knob (324) is fixedly installed at one end of the gear (323); a spring box (325) is fixedly installed at the other end; a pressing spring (326) and a pressing column (327) are provided in the spring box (325); a chuck (328) at the end of the pressing column (327) is clamped with a clamping ring (329) on the support rod (316); The auxiliary leveling assembly (33) comprises a reference ring (331) fixedly mounted at the middle section of the threaded cylinder (312), a measuring ruler (332) slidably connected to the reference ring (331) passing through the reference ring (331), and the other end of the measuring ruler (332) is fixedly connected to the adjustment ring (313); The torsion assembly (34) comprises a motor (341) fixedly mounted on the machine body (1); a rotating rod (342) is fixedly mounted on the output end of the motor (341); a telescopic sleeve (343) is vertically fixedly mounted on the other end of the rotating rod (342); the telescopic sleeve (343) is fixedly connected to the inner rotating seat (315); an electric telescopic rod (344) is symmetrically mounted on the machine body (1); an arc block (345) is fixedly mounted on the output end of the electric telescopic rod (344).

2. The drainage pipe detection device for building water supply and drainage engineering according to claim 1 is characterized in that: Anti-slip plates are fixedly mounted on both ends of the threaded barrel (312); The inner cavity of the adjusting ring (313) is provided with a thread groove which matches with the threaded barrel (312); The anti-rotation spring (317) is made of high-carbon alloy steel, copper alloy and a new ceramic-metal composite material.

3. The drainage pipe detection device for building water supply and drainage engineering according to claim 1, characterized in that: A plurality of evenly distributed anti-slip protrusions are fixedly mounted on the outer side of the fine-tuning knob (324); The pressing column (327) is slidably connected to the spring box (325), and one end of the pressing column (327) is located inside the spring box (325); The chuck (328) is composed of a circular disk and two triangular prisms, and a clamping groove adapted to the triangular prisms is provided on the inner side of the clamping ring (329).

4. The drainage pipe detection device for building water supply and drainage engineering according to claim 1, characterized in that: The walking mechanism (4) comprises a motor box (41) fixedly mounted on the outside of the outer rotating seat (322), a dual-axis motor (42) fixedly mounted inside the motor box (41), an active anti-skid roller (43) fixedly mounted on the output end of the dual-axis motor (42), a wheel rod (44) symmetrically mounted on the outside of the motor box (41), and a driven anti-skid roller (45) rotatably connected to the outside of the wheel rod (44).

5. The drainage pipe detection device for building water supply and drainage engineering according to claim 1, characterized in that: A self-cleaning camera mechanism (5) is provided at one end of the machine body (1) close to the electric telescopic rod (344), and the self-cleaning camera mechanism (5) comprises a camera (51) fixedly mounted at one end of the machine body (1) close to the electric telescopic rod (344); The camera (51) is provided with an air guide cover (52) fixedly mounted on the outside of the machine body (1), and a fan (53) is fixedly mounted on one end of the air guide cover (52) away from the lens of the camera (51), and an air outlet of the fan (53) is communicated with the inner cavity of the air guide cover (52); An air outlet nozzle (54) is fixedly mounted on one end of the inner side of the air guide cover (52) close to the lens piece of the camera (51), and the air inlet of the air outlet nozzle (54) is communicated with the inner cavity of the air guide cover (52).

6. The drainage pipe detection device for building water supply and drainage engineering according to claim 5, characterized in that: The number of the air outlet nozzles (54) is several, and the several air outlet nozzles (54) are distributed in a circular shape on the inner side of the air guide cover (52), wherein the air outlets of the air outlet nozzles (54) face the lens of the camera (51).

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