Urban drainage pipe network damage detection device

Abstract

The invention discloses an urban drainage pipe network damage detection device, and belongs to the technical field of pipeline detection, the urban drainage pipe network damage detection device comprises a well body, the side wall of the well body is fixedly communicated with a drainage pipe, the side wall of the well body corresponding to the upper part of the drainage pipe is rotatably connected with a rotating rod, and the other side of a support ring is connected with a rotating ring through a bearing. The rotating ring is fixedly provided with a scraping and sweeping mechanism, the scraping and sweeping mechanism comprises a scraping and sweeping plate, the middle part of the rotating ring is fixedly provided with a cleaning mechanism, the cleaning mechanism comprises a brush cylinder, the rotating rod drives the scraping and sweeping mechanism to rotate along the inner wall of the drainage pipe through the rotating ring, and the traction rope and the brush cylinder can drive the detection table to extend into the drainage pipe. The device has the technical effects that shielding objects on an outer cover of the detection table can be brushed, swept and cleaned, shielding objects on the wall of the drainage pipe can be fully scraped, swept and cleaned, the detection table can conveniently stretch into the drainage pipe, the detection precision and quality are effectively improved, and therefore the detection efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline detection, and in particular relates to a damage detection device for an urban drainage pipe network. Background Art

[0002] As an important part of urban infrastructure, the drainage network undertakes the key task of draining rainwater and sewage. However, due to the long-term influence of various factors such as underground environmental corrosion, geological changes, water erosion and construction quality, the drainage network is prone to damage. If these damages are not detected and repaired in time, they may lead to serious consequences such as ground collapse, sewage leakage, and environmental pollution, affecting the normal operation of the city and the quality of life of residents. Therefore, during the operation of the drainage network, regular inspections are required to ensure its normal operation and extend its service life. Common inspections include video inspections, which use video devices and other sensor technologies to detect defects and damage in the pipeline, as well as whether the pipeline is blocked. However, impurities in the pipeline can easily cover the lens of the camera device, requiring frequent manual cleaning, which is troublesome.

[0003] To this end, a Chinese patent with patent number CN222047433U discloses a drainage network operation status diagnosis and detection device, including a drainage pipe well, a drainage pipe extending to the outside of the drainage pipe well is fixedly installed on the inner side of the drainage pipe well, a support plate is fixedly installed on the inner side of the drainage pipe well and on the right side of the drainage pipe, a transparent protective cover is fixedly installed on the top of the support plate, a monitoring probe is arranged on the inner side of the transparent protective cover, a cleaning component is arranged on the outside of the transparent protective cover, and a slider drives the cleaning brush to move up and down, so as to clean the device on the back of the transparent protective cover to prevent impurities from sticking to the transparent protective cover and affecting the monitoring probe's observation of the pipeline.

[0004] However, with the above-mentioned device, stubborn stains are easily attached to the inner wall of the drain pipe during long-term use, making it difficult for the camera to clearly capture the damage of the inner wall of the drain pipe, which can easily affect the accuracy and quality of damage detection of the drainage network, thereby affecting detection efficiency. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a device for detecting damage of an urban drainage pipe network, which can not only brush and clean obstructions on the outer cover of the detection platform, but also fully scrape and clean obstructions on the wall of the drainage pipe. In addition, the detection platform can be easily extended into the interior of the drainage pipe, which effectively improves the accuracy and quality of detection, thereby improving the advantages of detection efficiency. It solves the problem in the prior art that the inner wall of the drainage pipe is easily adhered to stubborn stains, and the camera is difficult to clearly capture the damage of the inner wall of the drainage pipe, which is easy to affect the accuracy and quality of the drainage pipe network damage detection, thereby affecting the detection efficiency.

[0006] The present invention is achieved in this way. A device for detecting damage of an urban drainage pipe network comprises a well body, wherein a drainage pipe is fixedly connected at a side wall of the well body, a side wall of the well body corresponding to the top of the drainage pipe is rotatably connected to a rotating rod, and a traction rope is installed on the rotating rod, the interior of the well body is fixedly connected to a supporting ring through a fixing rod, one side of the supporting ring is fixedly connected to a supporting rod, and a detection mechanism is slidably installed in the middle of the supporting rod, the detection mechanism comprises a detection platform, a main camera probe is fixedly installed at one end of the detection platform, a side camera probe is fixedly installed on the side wall of the detection platform, a swivel is connected to the other side of the support ring through a bearing, a scraping mechanism is fixedly installed on the swivel, the scraping mechanism comprises a scraping plate, a cleaning mechanism is fixedly installed in the middle of the swivel, and the cleaning mechanism comprises a brush cylinder, the rotating rod drives the scraping mechanism to rotate along the inner wall of the drainage pipe through the swivel, and the traction rope and the brush cylinder can drive the detection platform to extend into the drainage pipe.

[0007] Through this arrangement, through the cooperation of the detection mechanism, the scraping mechanism and the cleaning mechanism, when performing the detection work, not only can the obstructions on the outer cover of the detection platform be brushed and cleaned, but the obstructions on the wall of the drain pipe can also be fully scraped and cleaned. In addition, the detection platform can also be easily extended into the interior of the drain pipe and is flexible to use, so that the detection camera probe can clearly reflect the condition inside the drain pipe, especially the damage of the inner wall of the drain pipe, which effectively improves the accuracy and quality of the detection, thereby improving the detection efficiency.

[0008] As a preferred embodiment of the present invention, one end of the rotating rod is fixedly connected to the output end of the motor, a shell is fixedly installed on the outer wall of the well body, the motor is fixedly connected to the inside of the shell, a winding wheel is fixedly installed on the other end of the rotating rod, one end of the traction rope is fixed on the winding wheel, a gear is sleeved and fixed on the side wall of the other end of the rotating rod, and a tooth portion is fixedly connected to the outer ring wall of the rotating ring, and the tooth portion is meshingly connected with the gear.

[0009] With this arrangement, starting the motor can drive the rotating rod, winding wheel and gear to rotate. The winding wheel facilitates the winding and extending operations of the traction rope, and then facilitates the movement of the detection platform to extend into the drain pipe and reset and retract. The meshing of the gear and the tooth portion facilitates the rotation of the rotating ring, and then facilitates the rotation of the scraping mechanism to realize the scraping operation of the drain pipe.

[0010] As a preferred embodiment of the present invention, a slide plate is fixedly connected to the other end of the detection platform, a transparent cover is fixedly connected to one side of the slide plate, and the transparent cover is arranged on the detection platform. The other side of the slide plate is connected to a ring plate through a bearing, and the middle part of the support rod is fixedly connected to a support tube, and the ring plate and the inner end of the support tube are fixedly connected by a plastic spring. The slide plate slides into the interior of the support tube, and the other end of the traction rope passes through the support tube, the ring plate and the slide plate in sequence and is connected to the detection platform.

[0011] With this arrangement, the transparent cover can be used to effectively protect the main camera probe and the side camera probe on the detection platform, thereby effectively improving the stability of the detection platform installation structure and facilitating the elastic telescopic movement of the detection platform. When the traction rope is reeled in, the skateboard can squeeze the plastic spring to drive the detection platform to reset and retract into the support tube. When the traction rope is extended, the plastic spring can reset and push the skateboard to drive the detection platform into the drain pipe, which is flexible to use.

[0012] As a preferred embodiment of the present invention, wire holes are opened between the middle parts of the support cylinder, the ring plate and the slide plate, and the traction rope is inserted into the wire holes. The middle part of the other end of the detection platform is connected with a ring block through a bearing, and the ring block is fixedly connected to the traction rope.

[0013] This arrangement facilitates the traction rope to drive the testing platform to perform stable telescopic movement, thereby improving the stability of the connection structure between the traction rope and the testing platform.

[0014] As a preferred embodiment of the present invention, the inner ring wall of the rotating ring is fixedly connected with a cross bar, the end of the cross bar is fixedly connected to the outer wall of one side of the brush cylinder, a brush part is fixedly connected to the inner wall of one end of the brush cylinder, a spiral channel is provided on the other end of the brush cylinder, a slide is provided on the top of the brush cylinder, the slide is connected to the spiral channel, the slide slides into the interior of the brush cylinder, and the surface of the transparent cover is tightly fitted with the brush part.

[0015] Through this arrangement, when the rotating rod drives the winding wheel to rotate in forward and reverse directions to a certain angle and repeatedly, the rotating ring drives the scraping plate and the brush part to rotate synchronously, and the detection platform drives the transparent cover to move back and forth along the brush part until the obstruction on the transparent cover is cleaned, thereby achieving full cleaning of the camera cover, thereby effectively improving the detection efficiency.

[0016] As a preferred embodiment of the present invention, a sliding block is fixedly connected to the upper end of the sliding plate, and the sliding block slides along the slideway and the spiral channel.

[0017] Through this arrangement, in order to allow the slider to pass smoothly, the spiral slope of the spiral channel is set to be gentle, and the slider can be set to a roller structure. The above arrangement is conducive to the slider sliding along the spiral channel more smoothly, reducing the friction between the slider and the spiral channel; The slider moves along the slideway, which is convenient for guiding the movement of the test platform stably and ensuring the stability of the detection work. When the slider enters the spiral channel, under the thrust of the plastic spring, the slider will slide along the spiral channel, and then drive the slide plate and the test platform to rotate synchronously, and then drive the side camera probe to illuminate the inner wall of the drain pipe more accurately and clearly, effectively improving the detection accuracy of the damage of the inner wall of the drain pipe and improving the detection efficiency.

[0018] As a preferred embodiment of the present invention, evenly distributed connecting rods are fixedly connected to the rotating ring, the scraping plate is fixedly connected to the end of the connecting rod, and the scraping plate is slidably connected to the inner wall of the drain pipe.

[0019] This arrangement makes it easy to install the scraper and sweeper, so that the scraper and sweeper can fully scrape and clean obstructions on the inner wall of the drain pipe.

[0020] As a preferred embodiment of the present invention, a guide rod is fixedly connected to the support ring, an end of the guide rod is fixedly connected to a guide ring, and the upper part of the traction rope is inserted into the guide ring.

[0021] This arrangement makes it easy to guide the upper position of the traction rope and facilitate the winding movement of the winding wheel.

[0022] As a preferred embodiment of the present invention, a first guide roller and a second guide roller are fixedly mounted on the outer end of the support tube, and the lower portion of the traction rope is slidably inserted between the first guide roller and the second guide roller.

[0023] This arrangement makes it easy to guide the lower position of the traction rope, to stably drive the detection platform to move telescopically, and to stably reel and extend the traction rope by the reeling wheel, which is easy to use.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: through the coordinated action of the detection mechanism, the scraping mechanism and the cleaning mechanism, when performing the detection work, not only the obstructions on the outer cover of the detection platform can be brushed and cleaned, but also the obstructions on the wall of the drain pipe can be fully scraped and cleaned. In addition, the detection platform can be easily extended into the interior of the drain pipe and is flexible to use, so that the detection camera probe can clearly reflect the condition inside the drain pipe, especially the damage of the inner wall of the drain pipe, which effectively improves the accuracy and quality of the detection, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 is a schematic diagram of a top structure provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of the internal structure provided by an embodiment of the present invention; Figure 4 is a schematic diagram of a cross-sectional structure provided by an embodiment of the present invention; Figure 5 is a schematic diagram of the support ring structure provided by an embodiment of the present invention; Figure 6 is a schematic diagram of a rotating ring structure provided by an embodiment of the present invention; Figure 7 The embodiment of the present invention provides Figure 4 Schematic diagram of the structure of the middle reel; Figure 8 The embodiment of the present invention provides Figure 4 Schematic diagram of the structure at the middle support tube; Fig. 9 It is a schematic diagram of the structure of a detection platform provided in an embodiment of the present invention.

[0026] In the figure: 1. well body; 2. drainage pipe; 3. support ring; 301. fixing rod; 302. support rod; 303. guide ring; 304. support tube; 305. plastic spring; 306. guide rod; 4. inspection table; 401. main camera probe; 402. side camera probe; 403. slide plate; 404. ring plate; 405. slide block; 406. transparent cover; 407. ring block; 5. rotating rod; 501. housing; 502. motor; 503. gear; 504. winding wheel; 505. traction rope; 506. wire hole; 507. first guide roller; 508. second guide roller; 6. rotating ring; 601. tooth part; 602. connecting rod; 603. scraping plate; 604. cross bar; 7. brush tube; 701. brush part; 702. slideway; 703. spiral channel. DETAILED DESCRIPTION

[0027] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0028] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0029] refer to Figures 1 to 9As shown, an urban drainage pipe network damage detection device provided by an embodiment of the present invention comprises a well body 1, a drainage pipe 2 is fixedly connected to the side wall of the well body 1, a rotating rod 5 is rotatably connected to the side wall of the well body 1 corresponding to the drainage pipe 2, a traction rope 505 is installed on the rotating rod 5, a support ring 3 is fixedly connected to the inside of the well body 1 through a fixed rod 301, a support rod 302 is fixedly connected to one side of the support ring 3, a detection mechanism is slidably installed in the middle of the support rod 302, and the detection mechanism comprises a detection platform 4, the detection platform A main camera probe 401 is fixedly installed on one end of the detection platform 4, a side camera probe 402 is fixedly installed on the side wall of the detection platform 4, the other side of the support ring 3 is connected to a swivel 6 through a bearing, a scraping mechanism is fixedly installed on the swivel 6, the scraping mechanism includes a scraping plate 603, a cleaning mechanism is fixedly installed in the middle of the swivel 6, the cleaning mechanism includes a brush cylinder 7, the rotating rod 5 drives the scraping mechanism to rotate along the inner wall of the drain pipe 2 through the swivel 6, and the traction rope 505 and the brush cylinder 7 can drive the detection platform 4 to extend into the drain pipe 2.

[0030] By adopting the above scheme, through the cooperation of the detection mechanism, the scraping mechanism and the cleaning mechanism, when performing the detection work, not only the obstructions on the outer cover of the detection platform 4 can be brushed and cleaned, but also the obstructions on the wall of the drain pipe 2 can be fully scraped and cleaned. In addition, the detection platform 4 can be easily extended into the interior of the drain pipe 2 and is flexible to use, so that the detection camera probe can clearly reflect the condition inside the drain pipe 2, especially the damage of the inner wall of the drain pipe 2, effectively improving the accuracy and quality of the detection, thereby improving the detection efficiency.

[0031] Specifically, one end of the rotating rod 5 is fixedly connected to the output end of the motor 502, a shell 501 is fixedly installed on the outer wall of the well body 1, the motor 502 is fixedly connected to the inside of the shell 501, a winding wheel 504 is fixedly installed on the other end of the rotating rod 5, one end of the traction rope 505 is fixed on the winding wheel 504, a gear 503 is sleeved and fixed on the side wall of the other end of the rotating rod 5, and a toothed portion 601 is fixedly connected to the outer ring wall of the rotating ring 6, and the toothed portion 601 is meshingly connected with the gear 503.

[0032] By adopting the above scheme, starting the motor 502 can drive the rotating rod 5, the winding wheel 504 and the gear 503 to rotate. The winding wheel 504 facilitates the winding and extending operations of the traction rope 505, and then facilitates the detection platform 4 to extend into the drain pipe 2 and reset and retract. The engagement of the gear 503 and the tooth portion 601 facilitates the rotation of the rotating ring 6, and then facilitates the rotation of the scraping mechanism to realize the scraping operation of the drain pipe 2.

[0033] Specifically, a slide plate 403 is fixedly connected to the other end of the detection platform 4, a transparent cover 406 is fixedly connected to one side of the slide plate 403, and the transparent cover 406 is arranged on the detection platform 4. The other side of the slide plate 403 is connected to a ring plate 404 through a bearing, and the middle part of the support rod 302 is fixedly connected to the support tube 304, and the inner end of the ring plate 404 and the support tube 304 are fixedly connected by a plastic spring 305. The slide plate 403 slides into the interior of the support tube 304, and the other end of the traction rope 505 passes through the support tube 304, the ring plate 404 and the slide plate 403 in sequence and is connected to the detection platform 4.

[0034] By adopting the above scheme, the transparent cover 406 is used to effectively protect the main camera probe 401 and the side camera probe 402 on the detection platform 4, which effectively improves the stability of the installation structure of the detection platform 4 and facilitates the elastic telescopic movement of the detection platform 4. When the traction rope 505 is rolled up, the slide plate 403 squeezes the plastic spring 305 to drive the detection platform 4 to reset and retract into the support tube 304. When the traction rope 505 is extended, the plastic spring 305 is reset to push the slide plate 403 to drive the detection platform 4 to extend into the drain pipe 2, which is flexible to use.

[0035] Specifically, a wire hole 506 is opened between the middle parts of the support cylinder 304, the ring plate 404 and the slide plate 403, and the traction rope 505 is inserted into the wire hole 506. The middle part of the other end of the detection platform 4 is connected with a ring block 407 through a bearing, and the ring block 407 is fixedly connected to the traction rope 505.

[0036] The above solution facilitates the traction rope 505 to drive the testing platform 4 to perform stable telescopic movement, thereby improving the stability of the connection structure between the traction rope 505 and the testing platform 4.

[0037] Specifically, the inner ring wall of the rotating ring 6 is fixedly connected with a cross bar 604, and the end of the cross bar 604 is fixedly connected to the outer wall of one side of the brush tube 7. A brush part 701 is fixedly connected to the inner wall of one end of the brush tube 7. A spiral channel 703 is provided on the other end of the brush tube 7. A slideway 702 is provided on the top of the brush tube 7. The slideway 702 is connected to the spiral channel 703. The slide plate 403 slides into the interior of the brush tube 7, and the surface of the transparent cover 406 fits tightly with the brush part 701.

[0038] By adopting the above scheme, when the rotating rod 5 drives the winding wheel 504 to rotate in forward and reverse directions to a certain angle and repeatedly, the rotating ring 6 drives the scraping plate 603 and the brush part 701 to rotate synchronously, and the detection platform 4 drives the transparent cover 406 to move back and forth along the brush part 701 until the obstructions on the transparent cover 406 are cleared, thereby achieving full cleaning of the camera cover, thereby effectively improving the detection efficiency.

[0039] Specifically, a slider 405 is fixedly connected to the upper end of the slide plate 403 , and the slider 405 slides along the slideway 702 and the spiral channel 703 .

[0040] In order to allow the slider 405 to pass smoothly, the spiral slope of the spiral channel 703 is set to be gentle, and the slider 405 can be set to a roller structure. The above setting is conducive to the slider 405 sliding along the spiral channel 703 more smoothly, reducing the friction between the slider 405 and the spiral channel 703; By adopting the above scheme, the slider 405 moves along the slide 702, which facilitates the stable guidance of the movement of the detection platform 4 and ensures the stability of the detection work. When the slider 405 enters the spiral channel 703, under the thrust of the plastic spring 305, the slider 405 will slide along the spiral channel 703, and then drive the slide plate 403 and the detection platform 4 to rotate synchronously, and then drive the side camera probe 402 to more accurately and clearly illuminate the inner wall of the drain pipe 2, thereby effectively improving the detection accuracy of the damage of the inner wall of the drain pipe 2 and improving the detection efficiency.

[0041] Specifically, the rotating ring 6 is fixedly connected with evenly distributed connecting rods 602 , the scraping plate 603 is fixedly connected to the end of the connecting rod 602 , and the scraping plate 603 is slidably connected to the inner wall of the drain pipe 2 .

[0042] The above solution makes it easy to install the scraper plate 603 , so that the scraper plate 603 can scrape and clean the obstructions on the inner wall of the drain pipe 2 .

[0043] Specifically, a guide rod 306 is fixedly connected to the support ring 3 , an end of the guide rod 306 is fixedly connected to the guide ring 303 , and the upper part of the traction rope 505 is inserted into the guide ring 303 .

[0044] The above solution makes it easy to guide the upper position of the traction rope 505 and facilitate the winding movement of the winding wheel 504.

[0045] Specifically, a first guide roller 507 and a second guide roller 508 are fixedly mounted on the outer end of the support tube 304 , and the lower portion of the traction rope 505 is slidably inserted between the first guide roller 507 and the second guide roller 508 .

[0046] The above scheme is adopted to facilitate guiding the lower position of the traction rope 505, facilitate the traction rope 505 to stably drive the detection platform 4 to telescopically move, and facilitate the winding wheel 504 to stably wind and stretch the traction rope 505, which is easy to use.

[0047] Working principle of the present invention: When in use, the motor 502 is started to drive the rotating rod 5 to rotate. At this time, the gear 503 is engaged with the tooth portion 601, causing the rotating ring 6 to rotate accordingly. The rotating ring 6 drives the scraping plate 603 to rotate to scrape off dirt, debris and other obstructions attached to the inner wall. The brush cylinder 7 in the middle of the rotating ring 6 also rotates synchronously. At the same time, the winding wheel 504 releases the traction rope 505 to stretch it. The plastic spring 305 elastically stretches to push the detection platform 4 out of the support tube 304 and move toward the brush tube 7 and the drain pipe 2. The transparent cover 406 is brushed and cleaned by the rotating brush portion 701 to prevent obstructions from adhering to the transparent cover 406.

[0048] When the inspection platform 4 enters the interior of the drain pipe 2, the tooth portion 601 of the swivel 6 disengages from the gear 503. At this time, the swivel 6 stops rotating, and the inspection platform 4 continues to move under the action of the winding wheel 504, the traction rope 505 and the plastic spring 305. Then, the slide plate 403 drives the slider 405 to move in a straight line along the slideway 702 of the brush tube 7. When the slider 405 enters the spiral channel 703, the main camera probe 401 and the side camera probe 402 extend out of the brush tube 7, and the slider 405 continues to slide along the spiral channel 703, which will then drive the slide plate 403 and the inspection platform 4 to rotate synchronously, and then drive the side camera probe 402 to rotate, so that the side camera probe 402 can capture the inner wall of the drain pipe 2 more accurately and clearly.

[0049] The main camera probe 401 and the side camera probe 402 cooperate with each other to capture the conditions of the inside and the inner wall of the drainage pipe 2 in all directions, such as whether there are cracks, damage, leakage, etc., and transmit the image information to the external receiving device for analysis and judgment. After the detection is completed, the motor 502 reverses, the rotating rod 5 rotates in the opposite direction, and the winding wheel 504 winds up the traction rope 505. Under the action of the plastic spring 305 and the traction rope 505, the detection platform 4 is pulled back to the initial position along the original path to wait for the next detection.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting damage to a city drainage network, comprising a well body (1), characterized in that: The side wall of the well body (1) is fixedly connected to a drainage pipe (2); the side wall of the well body (1) corresponding to the drainage pipe (2) is rotatably connected to a rotating rod (5); a traction rope (505) is installed on the rotating rod (5); the interior of the well body (1) is fixedly connected to a support ring (3) via a fixed rod (301); one side of the support ring (3) is fixedly connected to a support rod (302); a detection mechanism is slidably installed in the middle of the support rod (302); the detection mechanism comprises a detection platform (4); one end of the detection platform (4) is fixedly installed with a main camera probe (401); ), a side camera probe (402) is fixedly mounted on the side wall of the detection platform (4), a rotating ring (6) is connected to the other side of the support ring (3) via a bearing, a scraping mechanism is fixedly mounted on the rotating ring (6), the scraping mechanism comprises a scraping plate (603), a cleaning mechanism is fixedly mounted in the middle of the rotating ring (6), the cleaning mechanism comprises a brush cylinder (7), the rotating rod (5) drives the scraping mechanism to rotate along the inner wall of the drain pipe (2) via the rotating ring (6), and the traction rope (505) and the brush cylinder (7) can drive the detection platform (4) to extend into the drain pipe (2).

2. A device for detecting damage to a city drainage pipe network as claimed in claim 1, characterized in that: One end of the rotating rod (5) is fixedly connected to the output end of the motor (502); a housing (501) is fixedly mounted on the outer wall of the well body (1); the motor (502) is fixedly connected to the inside of the housing (501); a winding wheel (504) is fixedly mounted on the other end of the rotating rod (5); one end of the traction rope (505) is fixed on the winding wheel (504); a gear (503) is sleeved and fixedly mounted on the side wall of the other end of the rotating rod (5); a toothed portion (601) is fixedly connected to the outer ring wall of the rotating ring (6); and the toothed portion (601) is meshingly connected to the gear (503).

3. The urban drainage pipe network damage detection device according to claim 1, characterized in that: A slide plate (403) is fixedly connected to the other end of the detection platform (4), a transparent cover (406) is fixedly connected to one side of the slide plate (403), and the transparent cover (406) is arranged on the detection platform (4). A ring plate (404) is connected to the other side of the slide plate (403) via a bearing. A support tube (304) is fixedly connected to the middle of the support rod (302), and the ring plate (404) and the inner end of the support tube (304) are fixedly connected via a plastic spring (305). The slide plate (403) slides into the interior of the support tube (304), and the other end of the traction rope (505) passes through the support tube (304), the ring plate (404) and the slide plate (403) in sequence to be connected to the detection platform (4).

4. A device for detecting damage to a city drainage pipe network as claimed in claim 3, characterized in that: A wire hole (506) is provided between the middle parts of the support tube (304), the ring plate (404) and the slide plate (403), and the traction rope (505) is inserted into the wire hole (506). A ring block (407) is connected to the middle part of the other end of the detection platform (4) via a bearing, and the ring block (407) is fixedly connected to the traction rope (505).

5. The urban drainage pipe network damage detection device according to claim 3, characterized in that: The inner ring wall of the rotating ring (6) is fixedly connected to a cross bar (604), the end of the cross bar (604) is fixedly connected to the outer wall of one side of the brush cylinder (7), the inner wall of one end of the brush cylinder (7) is fixedly connected to a brush portion (701), the other end of the brush cylinder (7) is provided with a spiral channel (703), the top of the brush cylinder (7) is provided with a slideway (702), the slideway (702) and the spiral channel (703) are connected, the slide plate (403) slides into the interior of the brush cylinder (7), and the surface of the transparent cover (406) is tightly fitted with the brush portion (701).

6. A device for detecting damage to a city drainage pipe network as claimed in claim 5, characterized in that: The upper end of the slide plate (403) is fixedly connected to a sliding block (405), and the sliding block (405) slides along the slideway (702) and the spiral channel (703).

7. The urban drainage pipe network damage detection device according to claim 1, characterized in that: The rotating ring (6) is fixedly connected to evenly distributed connecting rods (602), the scraping plate (603) is fixedly connected to the end of the connecting rod (602), and the scraping plate (603) is slidably connected to the inner wall of the drainage pipe (2).

8. The urban drainage pipe network damage detection device according to claim 1, characterized in that: A guide rod (306) is fixedly connected to the support ring (3), an end of the guide rod (306) is fixedly connected to a guide ring (303), and an upper portion of the traction rope (505) is inserted into the guide ring (303).

9. A device for detecting damage to a city drainage pipe network as claimed in claim 3, characterized in that: A first guide roller (507) and a second guide roller (508) are fixedly mounted on the outer end of the support tube (304), and the lower part of the traction rope (505) is slidably inserted between the first guide roller (507) and the second guide roller (508).

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